Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting Download Page 129

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This alarm will disable mechanical cooling and will require a

manual reset. This alarm may be disabled once the reverse ro

tation check has been verified by setting

Configuration



COOL



RR.VF

= Yes.

It is important to note that in Service Test mode, reverse rota

tion is checked on every compressor start.

A150 (Unit is in Emergency Stop)

If the CCN point name “EMSTOP” in the System table is set to

emergency stop, the unit will shut down immediately and

broadcast an alarm back to the CCN indicating that the unit is

down. This alarm will clear when the variable is set back to

“enable.”

A152 (Unit Down due to Failure)

This alarm occurs whenever both cooling circuits are unavail

able to cool. Mechanical cooling is impossible due to a failure

in the system explained through other current alarms.

Possible problems are:

• plenum pressure switch trips on a return fan tracking unit

• the supply fan status alarms have been instructed to shut

down the unit

• both circuits incapable of cooling due to multiple alerts of

compressors and/or pressure alerts

• a hardware failure of the main board’s analog to digital

converter or EEPROM chip

• a critical storage failure in EEPROM has rendered the unit

inoperable

• the unit is configured for inlet guide vanes and the actuator

controlling the vanes is in fault.

Reset is automatic.

T153 (Real Time Clock Hardware Failure)

The RTC clock chip on the MBB is not responding. Recovery

is automatic but typically board replacement may be necessary.

A154 (Serial EEPROM Hardware Failure)

The unit will be completely shut down. The serial EEPROM

chip on the MBB which stores the unit’s configurations is not

responding. Recovery is automatic but typically board replace

ment is necessary.

T155 (Serial EEPROM Storage Failure Error)

Configuration data in the serial EEPROM chip cannot be veri

fied which may mean MBB replacement. It is possible a re-ini

tialization of the database or particular storage area(s) may

clean up this problem. Reset is automatic.

A156 (Critical Serial EEPROM Storage Fail Error)

The unit is completely shut down. Critical configuration data

in the serial EEPROM chip cannot be verified which may

mean MBB replacement. Recovery is automatic but typically

board replacement is necessary.

NOTE: The machine will shut down. This may happen after

downloading via the CCN if the device code was corrupted. Try

downloading again or use the LEN connection to download.

A157 (A/D Hardware Failure)

The unit will be completely shut down. The analog to digital

conversion chip on the MBB has failed. Recovery is automatic

but typically board replacement is necessary.

A169 (EXV board Communication Failure)

Cooling is disabled until communication with the EXV control

board is re-established. Recovery is automatic. Reason for fail

ure may be due to incorrect wiring, power loss to the control

board, or damage to the RS-485 drivers on the LEN bus.

T170 (Loss of communication with the Compressor Expan

sion Module)

Compressors A3, A4, B3 and B4 are disabled until communi

cation with the CEB control board is re-established. Recovery

is automatic. Reason for failure may be due to incorrect wiring,

power loss to the control board, or damage to the RS-485 driv

ers on the LEN bus.

A171 (Staged Gas Control Board Comm Failure)

Staged Heating is disabled until communication with the staged

gas control board is re-established. Recovery is automatic. Rea

son for failure may be due to incorrect wiring, power loss to the

staged gas control board, or damage to the RS-485 drivers on the

LEN bus.

T172 (Control Expansion Module Comm Failure)

Any function associated with a sensor configured for use that

resides on the controls expansion module will be disabled until

communication is re-established. Recovery is automatic. Rea

son for failure may be due to incorrect wiring, power loss to

the control expansion module, or damage to the RS-485 drivers

on the LEN bus.

A173 (RXB board Communication Failure)

As the RXB board is integral to all N Series units, the error will

cause a system shutdown until communication is re-estab

lished. Recovery is automatic. Reason for failure may be due to

incorrect wiring, power loss to the RXB board, or damage to

the RS-485 drivers on the LEN bus.

A174 (EXB board Communication Failure)

The EXB board is responsible for building pressure control.

Building Pressure control configurations that require this board

will cause a complete system shut down when communication

failure occurs. Recovery is automatic. Reason for failure may

be due to incorrect wiring, power loss to the EXB board, or

damage to the RS-485 drivers on the LEN bus.

A175 (VFD1 Communication Failure)

The supply fan is disabled until communication with the sup

ply fan VFD is re-established. Recovery is automatic. Reason

for failure may be due to incorrect wiring, power loss to the

VFD, or damage to the RS-485 drivers on the LEN bus.

T176 (VFD2 Communication Failure)

The exhaust fan is disabled until communication with the ex

haust fan VFD is re-established. Recovery is automatic. Rea

son for failure may be due to incorrect wiring, power loss to

the VFD, or damage to the RS-485 drivers on the LEN bus.

T177 (4-20 MA Demand Limit Failure)

If this transducer fails, and the unit is configured to perform

demand limiting with this transducer, no capacity limiting will

be performed and an alert will be generated. Recovery is auto

matic. Reason for error is either a faulty sensor, wiring error, or

damaged input on the CEM control board.

T178 (4-20 MA Static Pressure Reset Fail)

If this transducer fails, and the unit is configured to perform

static pressure reset with this transducer, no static pressure re

set will be performed and an alert will be generated. Recovery

is automatic. Reason for error is either a faulty sensor, wiring

error, or damaged input on the CEM control board.

A179 (Cir. A EXV board Communication Failure)

A180 (Cir. B EXV board Communication Failure)

Alarm codes 179 and 180 are for Circuits A and B respectively.

The EXV PCBs are integral to the proper functionality of each

refrigeration circuit. The corresponding circuit is disabled until

communications with the EXV is re-established. Recovery is

automatic. Reason for failure may be due to incorrect wiring,

power loss to the EXB board, or damage to the RS-485 drivers

on the LEN bus.

A200 (Linkage Timeout Error — Comm Failure)

If linkage is established via the CCN with ComfortID™ termi

nals, a 5-minute timeout on loss of communication will be moni

tored. If 5 minutes expire since the last communication from a

VAV Linkage Master, the unit will remove the link and flag the

Summary of Contents for WeatherExpert 48N2

Page 1: ...t Test 35 EXV Auto Component Test 35 Refrigerant Charge Auto Test without Liquid Sensors 36 Minimum Load Valve Auto Component Test 36 Supply Fan Auto Component Test 36 THIRD PARTY CONTROL 37 Thermostat 37 Alarm Output 37 Remote Switch 37 VFD Control 37 Supply Air Reset 37 Demand Limit Control 37 Economizer Outdoor Air Damper Control 37 CONTROLS OPERATION 39 Modes 39 Unit Configuration 42 Cooling C...

Page 2: ...nit Elec trical shock can cause personal injury and death Shut off all power to this equipment during installation and service The unit may have an internal non fused disconnect or a field installed disconnect CAUTION UNIT DAMAGE HAZARD This unit uses a microprocessor based electronic control system Do not use jumpers or other tools to short out com ponents or to bypass or otherwise depart from re...

Page 3: ...trols also allow the service person to operate a service test so that all the controlled components can be checked for proper operation WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage per sonal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other applia...

Page 4: ...ry and run time data Management of a complete unit service test sequence Economizer operation and Fault Diagnosis and Detection FDD per California Energy Commission Title 24 2013 System diagnostics are enhanced by the use of sensors for air and refrigerant temperatures and pressures Unit mounted actu ators provide digital feedback data to the unit control The ComfortLink controller is cable ready ...

Page 5: ...an use the System Pilot interface to change set points A security feature is provided to limit access of features for unauthorized users See Fig 2 for System Pilot interface details CCN Tables and Display In addition to the Navigator display the user can also access the same information through the CCN tables by using the Sys tem Pilot Service Tool or other CCN programs Details on the CCN tables a...

Page 6: ...SA HT Tempering Purge SASP T PRG Tempering in Cool SASP T CL Tempering in Vent Occ SASP T V OC Tempering in Vent Unocc SASP T V UN General Inputs GEN I Compressor Feedback FD BK Thermostat Inputs STAT Fire Smoke Modes FIRE Relative Humidity REL H Air Quality Sensors AIR Q CFM Sensors CFM Reset Inputs RSET 4 20 Milliamp Inputs 4 20 Fans FANS Cooling COOL Heating HEAT Actuators ACTU General Outputs ...

Page 7: ...onfigured for all appropriate factory installed options 2 Enter unit set points The unit is shipped with the set point default values If a different set point is required use the Navigator display or CCN interface to change the con figuration values 3 If the internal time schedules are going to be used config ure the Occupancy schedule 4 Verify that the control time periods programmed meet cur ren...

Page 8: ... 1553 35 37 1567 36 39 1581 37 43 1595 38 47 1609 39 51 36 000 1630 40 86 1643 41 94 1657 43 03 1670 44 11 1684 45 21 38 000 1707 46 93 1720 48 06 1733 49 20 1746 50 35 1759 51 49 40 000 1785 53 61 1798 54 80 42 000 45 000 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 15 000 1006 9 01 1030 9 58 1054 10 16 1077 10 75 1100 11 34 18 0...

Page 9: ...868 32 05 883 33 31 42 000 856 31 28 870 32 51 885 33 76 899 35 03 913 36 31 45 000 905 36 04 919 37 31 932 38 58 945 39 88 959 41 18 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 15 000 636 12 66 662 13 90 688 15 16 713 16 46 738 17 78 18 000 649 13 85 674 15 06 697 16 30 721 17 57 744 18 87 20 000 662 14 86 685 16 06 708 17 29 73...

Page 10: ...0 35 30 1565 36 32 1579 37 34 1593 38 37 35 000 1617 39 98 1630 41 04 1644 42 12 1658 43 19 1671 44 27 37 000 1699 46 36 1712 47 49 1725 48 61 1738 49 74 1751 50 88 39 000 1782 53 52 1795 54 70 41 000 42 000 44 000 46 000 48 000 52 500 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 21 000 1187 15 58 1207 16 31 1226 17 04 1245 17 78 ...

Page 11: ...025 52 48 48 000 1016 51 44 1027 52 99 1038 54 54 1049 56 12 1060 57 69 52 500 1099 64 19 1109 65 82 1119 67 48 1129 69 14 1140 70 82 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 21 000 676 14 53 697 15 65 719 16 79 739 17 96 760 19 16 25 000 707 17 11 727 18 27 746 19 46 765 20 67 784 21 90 27 000 731 19 11 750 20 30 768 21 52 78...

Page 12: ...2 12 1354 43 38 1367 44 66 1380 45 93 44 000 1379 45 75 1392 47 05 1404 48 36 1417 49 69 1429 51 01 46 000 1430 51 02 1443 52 37 1455 53 74 1467 55 11 1479 56 49 48 000 1482 56 69 1494 58 10 1505 59 51 1517 60 93 1528 62 36 50 000 1534 62 77 1545 64 24 52 000 56 000 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 24 000 982 16 02 100...

Page 13: ...0 1004 48 15 1017 50 02 1031 51 89 1043 53 76 1056 55 63 60 000 1065 56 29 1077 58 23 1090 60 18 1102 62 14 1114 64 11 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 24 000 676 15 46 696 16 55 716 17 65 736 18 74 754 19 84 28 000 715 18 63 734 19 84 753 21 05 771 22 25 789 23 47 32 000 736 20 39 755 21 65 773 22 92 790 24 18 808 25 ...

Page 14: ...2 36 1356 43 62 1369 44 90 1382 46 17 1395 47 46 44 000 1395 47 39 1407 48 70 1420 50 02 1432 51 36 1444 52 70 46 000 1446 52 81 1459 54 18 1470 55 55 1482 56 93 1494 58 33 48 000 1498 58 66 1510 60 06 1521 61 50 1533 62 92 1544 64 37 50 000 52 000 54 000 56 000 60 000 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 26 000 1034 18 87...

Page 15: ...33 56 000 1031 51 98 1044 53 89 1057 55 80 1070 57 71 1083 59 63 60 000 1094 60 85 1106 62 86 1118 64 85 1131 66 86 1143 68 87 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 26 000 706 17 63 726 18 79 745 19 95 763 21 11 782 22 28 30 000 749 21 29 768 22 57 786 23 84 803 25 12 821 26 40 34 000 772 23 33 790 24 66 808 25 99 825 27 33...

Page 16: ...00 1480 73 95 1489 75 40 1497 76 86 1505 78 32 1513 79 80 52 500 1521 80 13 1529 81 63 1537 83 12 1545 84 63 1553 86 14 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 15 000 700 7 56 723 8 21 746 8 86 768 9 53 791 10 21 18 000 744 9 53 764 10 24 784 10 96 804 11 69 824 12 44 21 000 797 11 99 815 12 77 833 13 55 851 14 35 868 15 16 2...

Page 17: ...077 50 50 1087 52 02 1096 53 54 1105 55 07 1114 56 62 52 500 1106 54 55 1115 56 09 1124 57 66 1133 59 23 1142 60 81 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 15 000 594 7 46 616 8 16 638 8 86 660 9 59 680 10 32 18 000 618 9 02 638 9 79 658 10 58 678 11 38 697 12 20 21 000 649 10 90 667 11 74 685 12 60 703 13 47 721 14 35 24 000...

Page 18: ...8 11 25 27 000 527 9 39 545 10 32 562 11 28 579 12 26 595 13 26 30 000 563 11 46 579 12 47 595 13 49 611 14 54 626 15 61 33 000 601 13 90 616 14 97 631 16 07 645 17 19 659 18 32 36 000 641 16 74 654 17 89 668 19 05 681 20 23 694 21 44 39 000 681 20 02 693 21 23 706 22 47 718 23 72 731 25 00 42 000 722 23 76 734 25 05 745 26 36 757 27 68 769 29 03 45 000 763 28 01 775 29 38 786 30 76 797 32 16 807 ...

Page 19: ...7 58 528 18 94 543 20 33 557 21 75 572 23 20 36 000 524 18 99 539 20 39 553 21 82 567 23 29 581 24 77 38 000 536 20 51 550 21 96 564 23 43 577 24 94 590 26 46 40 000 549 22 15 562 23 64 575 25 16 588 26 70 601 28 27 42 000 562 23 91 575 25 45 587 27 00 600 28 59 612 30 20 44 000 575 25 81 588 27 38 600 28 98 612 30 61 624 32 26 46 000 589 27 83 601 29 45 613 31 10 625 32 76 636 34 46 48 000 604 30...

Page 20: ...00 847 12 50 882 13 33 915 14 14 947 14 93 977 15 72 20 000 893 15 80 927 16 76 960 17 69 991 18 61 1021 19 50 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 5 000 756 2 28 786 2 48 814 2 67 842 2 87 868 3 07 8 000 809 4 15 838 4 45 867 4 75 894 5 04 920 5 34 10 000 846 5 80 875 6 18 903 6 55 930 6 92 957 7 30 12 000 884 7 82 913 8 ...

Page 21: ...000 868 28 05 890 29 20 912 30 35 933 31 48 954 32 62 28 000 890 30 74 912 31 94 933 33 13 954 34 31 974 35 49 AIRFLOW cfm AVAILABLE EXTERNAL STATIC PRESSURE in wg 2 2 2 4 2 6 2 8 3 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 5 000 651 2 76 678 3 04 704 3 32 730 3 62 754 3 92 7 000 668 3 73 695 4 06 721 4 41 746 4 76 770 5 11 9 000 688 4 95 714 5 35 740 5 75 764 6 16 788 6 57 11 000 711 6 45 737 6 9...

Page 22: ...47 18 60 472 20 68 496 22 80 519 24 97 30 000 429 19 61 456 21 81 481 24 06 504 26 34 527 28 65 33 000 440 23 08 466 25 47 490 27 88 513 30 33 536 32 81 36 000 451 27 03 476 29 60 500 32 20 523 34 82 545 37 47 39 000 463 31 49 488 34 25 511 37 04 534 39 84 555 42 67 42 000 476 36 48 500 39 46 523 42 43 545 45 42 566 48 43 45 000 489 42 06 512 45 23 535 48 41 48 000 503 48 25 51 000 52 500 AIRFLOW ...

Page 23: ...469 34 27 486 37 29 42 000 416 26 89 437 30 21 457 33 47 476 36 70 493 39 90 44 000 423 28 87 445 32 38 464 35 83 483 39 24 501 42 62 46 000 431 30 92 452 34 62 472 38 25 490 41 84 508 45 40 48 000 438 33 05 459 36 93 479 40 77 497 44 55 515 48 30 50 000 445 35 26 466 39 34 486 43 37 505 47 35 522 51 28 52 000 452 37 56 473 41 86 493 46 07 512 50 24 529 54 34 60 000 481 47 54 502 52 71 522 57 76 A...

Page 24: ... 16 0 23 0 32 0 43 0 55 0 68 0 84 1 00 1 24 FILTERS Mixed Air Filters 4 in MERV 8 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 4 in MERV 14 0 21 0 27 0 33 0 39 0 44 0 50 0 56 0 61 0 67 0 74 Cartridge Filter with 2 in Pre Filter 0 38 0 48 0 58 0 68 0 78 0 88 0 98 1 08 1 18 1 30 Cartridge Filter with 4 in Pre Filter 0 30 0 38 0 46 0 54 0 62 0 70 0 78 0 86 0 94 1 04 MERV 14 Bag with 2 in Pre Fil...

Page 25: ... 0 00 0 00 0 00 0 00 0 00 0 00 0 00 4 in MERV 14 0 34 0 40 0 46 0 51 0 57 0 63 0 69 0 74 0 80 0 86 Cartridge Filter with 2 in Pre Filter 0 60 0 70 0 80 0 90 1 00 1 10 1 20 1 30 1 40 1 50 Cartridge Filter with 4 in Pre Filter 0 48 0 56 0 64 0 72 0 80 0 88 0 96 1 04 1 12 1 20 MERV 14 Bag with 2 in Pre Filter 0 48 0 56 0 64 0 72 0 80 0 88 0 96 1 04 1 12 1 20 MERV 14 Bag with 4 in Pre Filter 0 36 0 42...

Page 26: ...25 18 7 28 7 21 4 34 3 27 4 93 6 ODP 30 22 4 34 5 25 7 42 1 32 8 94 1 TEFC 30 22 4 34 5 25 7 41 3 33 0 93 6 ODP 40 29 8 43 7 32 6 55 8 44 6 94 1 TEFC 40 29 8 46 0 34 3 53 5 42 8 94 1 ODP 50 37 3 53 9 40 2 69 6 55 2 94 5 TEFC 50 37 3 57 5 42 9 66 6 53 2 94 5 ODP 60 44 8 68 1 50 8 81 7 65 6 95 0 TEFC 60 44 8 69 0 51 5 81 9 67 5 95 0 ODP 75 56 0 84 2 62 8 101 2 80 5 95 0 TEFC 75 56 0 86 0 64 2 100 7 ...

Page 27: ...nal economizer option configurations 2 Under the Setpoints menu the following configurations should be set See the Exhaust Configurations section for additional ex haust option configurations Multi Stage CV and SAV Units with Space Sensor To configure the unit perform the following 1 Under Configuration UNIT C TYP set C TYP to 4 SPT MULTI 2 Under the Setpoints menu the following configurations sho...

Page 28: ...k Internal EEPROM see note below not used when Fan Track Learning is disabled FT RM Fan Track Internal Ram see note below not used when Fan Track Learning is disabled FT RS Fan Track Reset Internal see note below not used when Fan Track Learning is disabled NOTE These configurations are used only if Fan Track Learning is enabled When Fan Track Learning is enabled the control will add an offset to ...

Page 29: ...dure for Period 2 PER 2 If addi tional schedules are needed repeat the process for as many as are needed Eight schedules are provided SERVICE TEST General The units are equipped with a Service Test feature which is in tended to allow a service person to force the unit into different modes of operation To use this feature enter the Service Test category on the Navigator display and place the unit i...

Page 30: ...on 3 Out Act Cmd Pos 0 100 ECON2TST E3 CL Economzr 3 Calibrate Cmd No Yes ECON3 CAL E3C A Humidifier Act Ctrl Ang 0 100 HUMDCANG HTC C Ht Coil Command Position 0 100 HTCLACTC HT CL Heating Coil Act Cal Cmd No Yes HCOILCAL HTC A Heat Coil Act Ctl Angle 0 100 HTCLCANG HMD C Humidifier Command Pos 0 100 HUMD_TST HM CL Humidifier Act Cal Cmd No Yes HUMIDCAL HMD A Humidifier Act Ctrl Ang 0 100 HUMDCANG...

Page 31: ...as Valve 2 Off On HS3_TST HT 4 Relay 4 W2 Gas Valve 2 Off On HS4_TST HT 5 Relay 5 W1 Gas Valve 3 Off On HS5_TST HT 6 Relay 6 W2 Gas Valve 3 Off On HS6_TST HT 7 Relay 7 W1 Gas Valve 4 Off On HS7_TST HT 8 Relay 8 W2 Gas Valve 4 Off On HS8_TST HT 9 Relay 9 W1 Gas Valve 5 Off On HS9_TST HT 10 Relay 10 W2 Gas Valve 5 Off On HS10_TST HIR Heat Interlock Relay Off On HIR_TST HTC C Ht Coil Command Position...

Page 32: ...mp 40 240 dF SCTA SST B Cir A Sat Suction Temp 40 240 dF SSTA ML TS MLV HGBP AUTO TEST ML TR Run MLV HGBP Auto Test No Yes AC_MLV ML TD Test Status Timer 0 1 DD_TEXT MLV Minimum Load Valve Relay Off On MLV_TST DP A Cir A Discharge Pressure 14 750 psig DP_A ML ST MLV HGBP AutoTest Result 0 3 AC_MLVST SF TS SUPPLY FAN AUTO TEST SF TR Run Supply Fan Auto Test No Yes AC_SF SF DT Test Status Timer 0 1 ...

Page 33: ... are OFF To exercise this valve when a Circuit B compressor is ON go to Service Test COOL B EXV To view the actual valve position at any time the user can use the Outputs menu Out puts COOL B EXV Service Test HMZR C CAL Condenser EXV Calibrate On Humidi MiZer configured units this item allows the user to calibrate the valve that controls flow to the Circuit B con denser Switching C CAL to ON will ...

Page 34: ...ly configured heat type will energize the corresponding heat relay pattern that reflects the requested stage In addition the upper limit will be clamped to reflect the maximum configured num ber of stages When non zero the heat relays will be read only and reflect the currently selected pattern Service Test HEAT HT 1 10 Service Test HEAT HIR Manual Heat Relay Control If the Heat Stage Request item...

Page 35: ...C_DS_SP will default to 2 5 psig with a range of 0 to 10 psig Setting DS TR ON will perform the following 1 Turn supply fan and condenser fans ON 2 Wait for 25 seconds 3 Set digital scroll capacity to 50 4 Verify circuit SP AV decreases by AC_DS_SP within 30 seconds 5 Wait 2 minutes 6 Set digital scroll capacity to 100 7 Verify circuit SP AV decreases AC_DS_SP within 30 seconds 8 End test If SP AV...

Page 36: ...ot gas by pass valve HGBV The hot gas bypass auto component test requires the following conditions 1 Unit is not shut down due to failure A152 2 MLV ENBL 3 No compressors are on or requested on 4 Compressor A1 is available to start The test screen will display the following The MLV auto component test functions by comparing the dis charge pressure when MLV is closed to that when MLV is open and ve...

Page 37: ...ol expansion module CEM the ComfortLink controls are capable of accepting a 4 to 20 mA signal to reset the supply air temperature up to a maximum of 20 F Under Configuration EDT R set RS CF to 3 4 20 SA RSET external 4 to 20 mA supply air reset control The 4 to 20 mA input to the control system TB202 9 and TB202 8 will be lin earized and range from 0 F to 20 F For example 4 mA 0 F reset 12 mA 10 F...

Page 38: ... F and they follow the same logic as for the dis crete input This configuration allows the user to decide if the supply fan is not already running if the IAQ Analog Minimum Position Override input will start the fan and in which state of occupancy the fan will start If IQ A F is configured to request the supply fan then configu rations D F ON and D F OF need to be set These configura tion settings...

Page 39: ...gned to the System Mode when in the OFF mode and the conditions that may cause this mode are checked in the following hierarchal order 1 Wake up timer on a power reset Initializing System 2 System in the process of shutting down compressors and waiting for timeguards to expire Shutting Down 3 Factory shut down internal factory control level SHUTDOWN Factory Shut Down 4 Unit Stop software applicati...

Page 40: ...n cooling but will be using the economizer for free cooling Entering this mode will depend on the status of the outside air The unit can be configured for out side air dry bulb changeover differential dry bulb changeover outside air enthalpy changeover differential enthalpy change over or a custom arrangement of enthalpy dew point and dry bulb See the Economizer section for further details HVAC Mo...

Page 41: ...wn Compressor contactor welded on HVAC Mode Comp Stuck On Unit control free to select normal heating cooling HVAC mode HVAC Mode OFF HVAC Mode Tempering Vent HVAC Mode Tempering LoCool HVAC Mode Tempering HiCool HVAC Mode Venting Dehumidification HVAC Mode Cooling Dehumidification HVAC Mode Vent HVAC Mode Low Cool HVAC Mode High Cool HVAC Mode Low Heat HVAC Mode High Heat HVAC Mode Unocc Free Cool...

Page 42: ... configuration instructs the control to communicate with the Controls Expansion Module CEM over the local equip ment network LEN when set to YES When the unit is con figured for certain sensors and configs this option will be set to YES automatically The sensors and configurations that au tomatically turn on this board are Configuration UNIT SENS SRH S Enable Space Relative Humidity Sensor Enable ...

Page 43: ...e econo mizer to a static position for a little more than 5 minutes and then move to several positions to repeat the same 20 40 60 80 The only stipulation to this commis sioning is that it is important that the difference between re turn and outside temperature be greater than 5 degrees The greater the delta the better When done set MAT S 2 and the system has been learned forever Reset MAT Table E...

Page 44: ...e stages of cooling for either a space temperature sensor or thermostat by controlling the unit to either a low or high cool supply air set point SETTING UP THE SYSTEM The control type Configuration UNIT C TYP deter mines the selection of the type of cooling control as well as the technique for selecting a cooling mode Unit staging tables are shown in Appendix C NOTE Whether a unit has a VFD or a ...

Page 45: ...used to disable the B1 compressor in case of failure for size 75 to 150 ton units Enable Compressor B2 B2 EN This configuration is used to disable the B2 compressor in case of failure for size 75 to 150 ton units Enable Compressor B3 B3 EN This configuration is used to disable the B3 compressor in case of failure for size 75 to 150 ton units Enable Compressor B4 B4 EN This configuration is used to...

Page 46: ...for the MotorMaster control These configurations should not be adjusted in the field Maximum Condenser Temp SCT H This configuration defines the saturated condensing tempera ture at which the head pressure control routine will increase an outdoor fan stage The saturated condensing temperature of ei ther running circuit rising above this temperature will increase a fan stage If the outdoor air temp...

Page 47: ...essure trips and or compressor flooding Enab Cir Shtdwn w flood EN SC This configuration enables circuit shutdown when flooding is detected Comp Cir Exv Min Pos EX MN This configuration sets the allowable commanded EXV mini mum position Factory default is 20 Normal adjustment range is 10 to 20 Adjustment below this range could cause excessive head pressure alerts alarms Adjustment above this range...

Page 48: ...enser Temp 100 to 150 dF SCT_MAX 115 SCT L Minimum Condenser Temp 40 to 90 dF SCT_MIN 80 DG A1 A1 is Digital Scroll No Yes DIGCMPA1 No MC A1 A1 Min Digital Capacity 30 to 100 MINCAPA1 50 DS AP Dig Scroll Adjust Delta 0 to 100 DSADJPCT 100 DS AD Dig Scroll Adjust Delay 15 to 60 sec DSADJDLY 20 DS RP Dig Scroll Reduce Delta 0 to 100 DSREDPCT 6 DS RD Dig Scroll Reduce Delay 15 to 60 sec DSREDDLY 30 D...

Page 49: ...the return air temperature drops low enough When supply air temperature reset is not configured this capability will work to prevent over cooling the space during the occupied period Supply Air Set Point Control and the Staging of Compressors Once the control has determined that a cooling mode is in ef fect the cooling control point Run Status VIEW CL C P is calculated and is based upon the supply...

Page 50: ...he set points and offsets which determine the trip points for bringing on and bringing off cool modes there are 2 configurations which work to hold off the transitioning from a low cool to a high cool mode if the space is cooling down quickly enough This technique is referred to as comfort trending and the configurations of interest are C T LV and C T TM Cool Trend Demand Level C T LV This is the ...

Page 51: ...al display under Configuration COOL Z GN See Table 28 Capacity Threshold Adjust Z GN This configuration affects the cycling rate of the cooling stages by raising or lowering the threshold that capacity must build to in order to add or subtract a stage of cooling The cooling algorithm s run time variables are located at the local display under Run Status COOL See Table 32 Current Running Capacity C...

Page 52: ...s 0 20 CLMAXSTG DEM L Active Demand Limit 0 100 DEM_LIM forcible SUMZ COOL CAP STAGE CONTROL SMZ Capacity Load Factor 400 400 SMZ ADD R Next Stage EDT Decrease 0 30 ADDRISE SUB R Next Stage EDT Increase 0 30 SUBRISE R PCT Rise Per Percent Capacity 0 10 RISE_PCT Y MIN Cap Deadband Subtracting 40 0 Y_MINUS Y PLU Cap Deadband Adding 0 40 Y_PLUS Z MIN Cap Threshold Subtracting 99 0 Z_MINUS Z PLU Cap T...

Page 53: ...between the evaporator coils and the Humidi MiZer dehumidification reheat coil Units configured with Humidi MiZer system have a thermistor grid installed between these 2 coils to provide the measure ment This temperature can also be read at Tempera tures AIR T CCT Heating Control Point H CPT Displays the current heating control point for Humidi MiZer sys tem During a Reheat mode this temperature w...

Page 54: ...verride H TMP Low Temp Cap Override L TMP Pull Down Cap Override PULL Slow Change Cap Override SLOW Economizer Trim Override The unit may drop stages of cooling when the economizer is per forming free cooling and the configuration Configura tion ECON E TRM is set to Yes The economizer controls to the same supply air set point as mechanical cooling does for SumZ when E TRM Yes This allows for much ...

Page 55: ...h the pressure converted to the cor responding saturated condensing temperature An option to allow fan speed control Motormaster on the first stage is configured by setting Configuration COOL M M Yes There are 5 configurations provided for head pressure control that can be found at the local display Configuration COOL M M Motormaster enable Configuration M PID SCT H Maximum Condensing Temp Configu...

Page 56: ...ing algorithm SumZ checks the economizer s current position Run Status ECON ECn P and compares it to the economizer s maxi mum position Configuration ECON EC MX 5 Once the economizer has opened beyond this point a 150 second timer starts If the economizer stays beyond this point for 2 5 minutes continuously the mechanical cooling algorithm is allowed to start computing demand and stage compressors...

Page 57: ... 1 OFM1 1 0 Ckt A on Stage up by individual circuit when SCTA SCT_MAX Stage up to Stage 2A when SCTA SCT_MAX Stage down OFC1 off when Ckt A goes off Stage 1B OFC3 CONDFAN3 1 OFM6 0 1 Ckt Bon Stage up by individual circuit when SCTB SCT_MAX Stage up to Stage 2B when SCTB SCT_MAX Stage down OFC3 off when Ckt B goes off Stage 2A OFC 1 2 CONDFAN1 2 2 OFM1 3 2 0 Stage up by individual circuit when SCTA...

Page 58: ...SCTB SCT_MAX Stage down OFC3 off when Ckt B goes off Stage 2A OFC2 CONDFAN2 2 OFM1 3 2 0 Stage up by individual circuit when SCTA B SCT_MAX Stage up to Stage 3A when SCTA SCT_MAX Stage down to Stage 1A when SCTA SCT_MIN Stage 2B OFC4 CONDFAN4 2 OFM4 6 0 2 Stage down by individual circuit when SCTA B SCT_MIN Stage up to Stage 3B when SCTB SCT_MAX Stage down to Stage 1B when SCTB SCT_MIN Stage 3A OF...

Page 59: ...CT_MIN Stage 3A OFC1 2 CONDFAN1 2 4 OFM4 5 6 2 2 5 1 5 Stage up down by individual circuit Stage up to Stage 4A when SCTA SCT_MAX Stage down to Stage 2A when SCTA SCT_MIN Stage 3B OFC2 3 CONDFAN2 3 4 OFM4 5 6 8 1 5 2 5 Up if SCT SCT_MAX Down if SCT SCT_MIN Stage up to Stage 4B when SCTB SCT_MAX Stage down to Stage 2B when SCTB SCT_MIN Stage 4A OFC2 4 CONDFAN2 4 5 OFM4 5 6 1 3 3 5 1 5 Stage up down...

Page 60: ... display under Configuration HEAT See Table 34 Table 34 Heating Configuration Some defaults are model number dependent ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT HEAT HEATING CONFIGURATION HT CF Heating Control Type 0 to 5 HEATTYPE 0 HT SP Heating Supply Air Setpt 65 to 120 dF SASPHEAT 85 OC EN Occupied Heating Enabled No Yes HTOCCENA No LAT M MBB Sensor Heat Relocate No Yes HTLATMON No SG CF ST...

Page 61: ...t the unit from selecting a heat mode First the unit must be configured for a heat type Configuration HEAT HT CF not equal to NONE Second the unit has a configuration which can enable or disable heating in the occu pied period except for a standard morning warm up cycle Configuration HEAT OC EN See descriptions above in the Setting Up the System section for more information Morning Warm up The mor...

Page 62: ...ODE DIAGNOSTIC HELP To quickly determine the current trip points for the low and high heat modes there is a menu in the local display which lets the user quickly view the state of the system This menu also contains the cool trip points as well See Table 31 at the local display under Run Status TRIP The controlling temperature is TEMP and is in the middle of the table for easy reference Also the HV...

Page 63: ...be modified without ap proval from Carrier service personnel Freeze Status Switch Logic Inputs GEN I FRZ S If the freezestat input FRZ alarms indicating that the coil is freezing normal heat control is overridden and the following actions will be taken 1 Command the hot water coil actuator to 100 2 Command the economizer damper to 0 3 Command the supply fan on Table 36 Hydronic Heat Configuration ...

Page 64: ...lay under Configuration HEAT SG CF See Table 37 Fig 10 Actuator Serial Number Configuration SCR ELECTRIC HEAT CONTROL HT CF 5 NO REQ SET HT ST As an option the units with electric heat can be equipped with modulating SCR electric heater controls that will provide in finite stages of heat capacity This is intended for tempering mode and tempering economizer air when in a cooling mode and the damper...

Page 65: ...erently based on the amount of heating capacity included These staging patterns are selected based on the unit model number The selection of a set of staging patterns is controlled via the heat stage type configura tion parameter Configuration HEAT SG CF HT ST Set ting HT ST to 0 1 2 or 3 configures the unit for Modulating Gas Heat The selection of HT ST 0 1 2 or 3 is based on the unit size and he...

Page 66: ... 58 3 ON OFF ON ON OFF ON OFF 60 83 4 ON OFF ON ON ON ON ON 76 100 STAGE RELAY OUTPUT CAPACITY Heat 1 Heat 2 Heat 3 Heat 4 Heat 5 Heat 6 Heat 7 Heat 8 MBB RLY8 TR1 CR SCB RLY1 SCB RLY2 SCB RLY3 SCB RLY4 MBB RLY9 MBB RLY10 IGC1 MGV1 IGC2 MGV2 IGC3 MGV3 IGC4 MGV4 MIN MAX 0 OFF OFF OFF OFF OFF OFF OFF OFF 0 0 1 ON OFF ON OFF OFF OFF OFF OFF OFF 7 25 2 ON OFF ON ON OFF OFF OFF OFF OFF 26 44 3 ON OFF O...

Page 67: ...of the Hall Effect sensor The IGC is equipped with an LED light emitting diode for diagnostics See Table 44 Table 44 IGC LED Indicators NOTES 1 There is a 3 second pause between error code displays 2 If more than one error code exists all applicable error codes will be displayed in numerical sequence 3 Error codes on the IGC will be lost if power to the unit is interrupted Integrated Gas Control B...

Page 68: ...lowed and the gas will remain on for a minimum of 1 minute RELOCATE SAT FOR HEATING LINKAGE APPLICATIONS If Configuration HEAT LAT M is set to YES the supply air temperature thermistor Temperatures AIR T SAT must be relocated downstream of the installed heating device This only applies to 2 stage gas or electric heating types Con figuration HEAT HT CF 1 or 2 Determine a location in the supply duct...

Page 69: ... pro vide varying amounts of air to the conditioned space As air terminals downstream of the unit modulate their flows the unit must simply maintain control over duct static pressure in order to accommodate the needs of the terminals and therefore to meet the varying combined airflow requirement The unit de sign includes an optional means of accommodating this re quirement This section describes t...

Page 70: ... static pressure reset based on the CEM 4 to 20 mA input and ranged from 0 to 3 in wg When SP RS 2 there is static pressure reset based on RAT and defined by SP RT and SP LM When SP RS 3 there is static pressure reset based on SPT and defined by SP RT and SP LM When SP RS 4 there is VFD speed control where 4 mA 0 speed and 20 mA 100 SP MN and SP MX will override Static Pressure Reset Ratio SP RT T...

Page 71: ...r could enter 3 0 in wg as the supply static pressure set point and allow the air terminal system to dynamically adjust the supply duct static pressure set point as required The system will determine the actual set point required deliver ing the required airflow at every terminal under the current load conditions It will always be the lowest value under the given conditions and as the conditions a...

Page 72: ...FR PF_FR are used for the Delta Pressure and Predictive Life configurations for the main and post filter The final resistance will be automatically set when the filter type is selected After selecting a filter type it is possible to change the filter final re sistance Settings for filters based on Tables 49 and 50 for main and post filters Table 49 Main Filter Types Table 50 Post Filter Types To c...

Page 73: ...er it is possible to set the control to use the learned information to calculate the life of filters used in the future This is only an option when the replacement filters used are the same type and final resistance as the filters used to learn the life During runtime the SACFM is used to interpolate the baseline pressure The interpolation is then used to calculate the filter status See Table 52 T...

Page 74: ...rol shall not au tomatically clear damper not modulating alerts on units Test for stuck jammed actuator The control shall test for a jammed actuator as follows If the actuator has stopped moving and the reported position ECONxPOS where x is 1 2 is not within EC_FLGAP of the command position ECONOCMD after EC_FLTMR seconds a damper stuck or jammed alert shall be logged i e abs ECONxPOS ECONODMD EC_...

Page 75: ... decreases properly EC ST PASS otherwise EC ST FAIL If EC ST is set to pass any existing damper not modulating alert shall be automatically cleared If EC ST is set to fail the damper not modulating alert shall be logged If at any point in the test the fan does not reach the command speed or an actuator does not reach the command position within 5 minutes the test shall be stopped and the status se...

Page 76: ... SAT Econ Auto Test Time EC TM The time at which to perform automatic economizer test The range is 0 to 23 default is 2 SETTING UP THE SYSTEM The economizer configuration options are under the Local Dis play Mode Configuration ECON See Table 54 Table 54 Economizer Configuration Table ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT EC EN Economizer Installed No Yes ECON_ENA Yes EC MN Economizer Min Po...

Page 77: ...changeover select configuration option Outdoor Dewpoint Limit Check needs an outdoor relative humidity sensor installed Dry Bulb Changeover Outside air temperature may be viewed under Tempera tures AIR T OAT The control constantly compares its outside air temperature reading against OAT L If the temperature reads above OAT L the economizer will not be allowed to perform free cooling SN 1 4 Econ 1 ...

Page 78: ... enable the CEM board to be read if it is not so already automatically NOTE If the user wishes to disable the enthalpy switch from running concurrently a field supplied jumper must be installed between TB201 terminals 3 and 4 Differential Enthalpy Changeover This option compares the outdoor air enthalpy to the return air en thalpy and favors the airstream with the lowest enthalpy This op tion shou...

Page 79: ...This configuration option allows the user to select an outside air temperature below which unoccupied free cooling is disal lowed This is further explained in the logic section Unoccupied Economizer Free Cooling Logic Unoccupied free cooling can only operate with the qualifications Unit configured for an economizer Unit in the unoccupied mode FC CF set to 1 or FC CF set to 2 and within FC TM min u...

Page 80: ...damper shall be closed and the remaining damper shall be modulated to meet ECMINCFM This configuration shall default to 7500 cfm for the standard flow station and 17500 for extended flow station Single Act Max CFM DB S M DB This configuration sets the single actuator max cfm deadband When ECMINCFM is greater than S MX C S M DB the con trol shall revert back to dual actuator OACFM control This con ...

Page 81: ...N then EC C P the Cooling Control Point Run Status VIEW CL C P NOTE To check the current cooling stage go to Run Status Cool CUR S If the C TYP is either 1 2 3 or 4 and the unit is in a cool mode then EC C P the Cooling Control Point Run Status VIEW CL C P Single Act CFM Ctl Activ SACA Indication whether single actuator CFM control is active NO Single actuator cfm control is not currently active T...

Page 82: ...T CF For BP CF 2 this return exhaust control configuration selects whether the fan tracking algorithm will make corrections over time and add a learned offset to FT ST If this configuration is set to NO the unit will try to control the delta cfm value between the supply and return VFDs only based on FT ST Fan Track Learn Rate FT TM For BP CF 2 this return exhaust control configuration is a timer w...

Page 83: ...e control is initialized Thereafter if the supply fan relay goes off or if the building pressure drops below the BP SP minus the building pressure set point offset BP SO for 5 continuous minutes building pressure control will be stopped The 5 minute timer will continue to re initialize if the VFD is still commanded to a position 0 If the building pressure falls below the set point the VFD will clo...

Page 84: ...relay s commanded output can be found in Out puts FANS S FAN The supply fan VFD s commanded speed can be found in Out puts FANS S VFD The configurable fire speed override for exhaust VFD actuator is in Configuration BP B V A BP FS The exhaust fan VFD s commanded speed can be found in Outputs FANS E VFD Indoor Air Quality Control The indoor air quality IAQ function will admit fresh air into the spa...

Page 85: ... damper posi tion may exceed EC MN in order to provide free cooling The ComfortLink controls are configured for air quality sen sors which provide 4 mA at 0 ppm and 20 mA at 2000 ppm If a sensor has a different range these bounds must be reconfig ured These pertinent configurations for ranging the air quality sensors are IQ R L IQ R H OQ R L and OQ R H The bounds represent the PPM corresponding to...

Page 86: ... indicated by the discrete input and the economizer minimum position will be the IAQ override position IQ P O when high It is also necessary to configure how the fan operates when using the IAQ discrete input IAQ Discrete Fan Config Configuration IAQ AQ CF IQ I F This is used to configure the operation of the fan during an IAQ demand condition It has the following configurations IQ I F 0 No Fan St...

Page 87: ...r OAQ sensor that may have a different characteristic curve It rep resents the CO2 level at 4 mA Diff IAQ Responsiveness Configuration IAQ AQ SP IAQ R This is the configuration that is used to select the IAQ response curves as shown in Fig 13 PRE OCCUPANCY PURGE The control has the option for a pre occupancy purge to refresh the air in the space prior to occupancy This feature is enabled by settin...

Page 88: ...THE SYSTEM These humidity configuration are located in the local displays under Configuration HUMD See Table 58 Related points are shown in Table 59 Humidifier Control Configuration HM CF The humidifier control can be set to the following configurations HM CF 0 No humidity control HM CF 1 Discrete control based on space relative humidity HM CF 2 Discrete control based on return air relative humidi...

Page 89: ...dition set points based on dry bulb temperature and deliver cooler air to the space in order to satisfy a humidity set point at the space or return air humidity sensor The Reheat function will ener gize a suitable heating system concurrent with dehumidifica tion sequence should the dehumidification operation result in excessive cooling of the space condition The dehumidification sequence requires ...

Page 90: ... reheat follows an offset subtracted from return air temperature Configura tion IAQ DEHU D SEL 3 then no heating will be initiated and the alarm relay will be energized If Configu ration IAQ DEHU D SEL 2 or1 and Configura tion HEAT HT CF staged gas or hot water valve then the selected heating control type will operate in the low heat modulating mode The heating control point will be whatever the a...

Page 91: ...y sensor falls below relative humidity sensor s dead band Configuration DEHU DH DB or below the set point Configuration DEHU D RH S or the discrete input reads LOW and discrete switch time guard ex pires Configuration DEHU DH TG the Humidi MiZer mode will end Relevant Outputs The Humidi MiZer 3 way valve reheat valve commanded output can be found in Outputs COOL RHV The Humidi MiZer Condenser Modu...

Page 92: ... the evaporator leaving air temperature The liquid refrigerant then enters an electronic expansion valve EXV where the refrigerant pressure is decreased The refrigerant enters the EXV and evaporator coil at a temperature lower than in standard cooling operation This lower temperature increases the latent capacity of the evaporator The refrigerant passes through the evaporator and is turned into a ...

Page 93: ...s reached the Tem perature Compensated Start mode is set Operating Modes MODE T C ST the fan is started and the unit con trolled as in an occupied state Once set Temperature Compen sated mode will stay on until the unit goes into the Occupied mode The Start Bias Time will be written into the CCN Link age Equipment Table if the unit is controlled in DAV mode If the Unoccupied Economizer Free Cool m...

Page 94: ...tion allows the user to decide how long an over ride occurs when it is initiated The override may be config ured from 1 to 4 hours If the time is set to 0 the override func tion will become disabled Timed Override Hours OV EX This displays the current number of hours left in an override It is possible to cancel an override in progress by writing 0 to this variable thereby removing the override tim...

Page 95: ...T317 will be generated RARH Low Alert Limit R RH L If the unit is configured to use a return air relative humidity sensor Configuration UNIT SENS RRH S and the measured level is below the configurable RH Low Alert Limit R RH L then Alert 308 will occur The unit will continue to run and the alert will automatically reset RARH High Alert Limit R RH H If the unit is configured to use a return air rel...

Page 96: ...mperature NOTE Due to the resolution of the control board analog input temperature readings less than 50 F will become increasingly inaccurate as the temperature decreases Suction Pressure Circuit A Trim SP A T This variable is used to adjust the suction pressure sensor read ing for Circuit A The sensor reading can be adjusted 50 psig to match the actual measured pressure Suction Pressure Circuit ...

Page 97: ...rmally open for off If a field supplied demand limit switch is used that is normally closed change this variable to closed Demand Limit Switch 2 Off DL2 L The demand limit switch no 2 input is set for normally open for off If a field supplied demand limit switch is used that is normally closed change this variable to closed IAQ Discrete Input Low IAQ L The IAQ discrete input is set for normally op...

Page 98: ...equals the Nominal Motor Volts N VLT Power to the VFD must be cy cled in order for a change to this configuration to take effect VFD1 Nominal Motor RPM N RPM This configuration defines the nominal motor speed This val ue must equal the value on the motor rating plate Power to the VFD must be cycled in order for a change to this configuration to take effect VFD1 Nominal Motor HPwr N PWR This config...

Page 99: ...r HPwr N PWR This configuration defines the nominal motor power This val ue must equal the value on the motor rating plate Power to the VFD must be cycled in order for a change to this configuration to take effect Table 68 Optional VFD Power Exhaust PE Motor Limitations FLA ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT TEST Test Display LEDs Off On TEST Off METR Metric Display Off On DISPUNIT Off L...

Page 100: ...t Gas Bypass The ComfortLink control system supports the use of an optional minimum load hot gas bypass valve MLV that is directly con trolled by the ComfortLink control system This provides an addi tional stage of capacity as well as low load coil freeze protection Hot gas bypass is an active part of the N Series ComfortLink ca pacity staging and minimum evaporator load protection functions It is...

Page 101: ... IN PERIOD PER X DAYS FRI This variable is used to include or remove Friday from the schedule Each period is assigned an occupied on and off time If this variable is set to YES then Friday will be included in that period s occupied time schedule If this variable is set to NO then the period s occupied time schedule will not be used on Friday This variable can be set for Periods 1 through 8 SATURDA...

Page 102: ...r multi text strings MOY DOM Day of Month 0 31 DOM DAY Day of Week multi text strings DOWDISP YEAR Year e g 2003 YOCDISP SCH L LOCAL TIME SCHEDULE PER 1 PERIOD 1 PER 1 DAYS DAY FLAGS FOR PERIOD 1 Period 1 only PER 1 DAYS MON Monday in Period No Yes PER1MON Yes PER 1 DAYS TUE Tuesday in Period No Yes PER1TUE Yes PER 1 DAYS WED Wednesday in Period No Yes PER1WED Yes PER 1 DAYS THU Thursday in Period...

Page 103: ...ERMISTOR TEMPERATURE SENSOR CHECK A high quality digital volt ohmmeter is required to perform this check 1 With the unit powered down remove the terminal strip of the thermistor being diagnosed from the appropriate con trol board MBB J8 or RCB J6 Connect the digital ohm meter across the appropriate thermistor terminals in the terminal strip 2 Using the resistance reading obtained read the sensor t...

Page 104: ...l Refrigerant overcharge Recover excess refrigerant Faulty EXV 1 Check ST thermistor mounting and secure tightly to suction line and insulate 2 Replace EXV and filter drier if stuck open or closed 3 Run EXV auto component test EXV board malfunction Check alarm history for A169 expansion valve control board comm failure Condenser air restricted or air short cycling Determine cause and correct Restr...

Page 105: ...ete humidity input device Relative Humidity set point is too low RH sensor Check the dehumidification relative humidity trip point Configuration DEHU D RH S Software configuration error for the type of relative humidity sensor being used Check that the unit software is configured for the correct relative humidity sensor Configuration DEHU D SEN D SEN 1 RARH 2 SPRH 3 Discrete Input See page 89 No h...

Page 106: ...d outdoor conditions Low Sensible Capacity in Normal Cooling Mode Valve controlling gas bypass around the condenser is stuck in an open position or leaking See Modulating Valves Not Functioning Properly Valve controlling refrigerant flow to the condenser is stuck in a position less than 100 open See Modulating Valves Not Functioning Properly General cooling mode problem See Table 72 Modulating Val...

Page 107: ... SC 30 and TR1 Post Filter Option Only Filter Temperature Switch Open Check 4 filter temperature switches located on face of post filters Switch opens on high temperature Poor Flame Characteristics Incomplete combustion lack of combustion air results in Aldehyde odors CO sooting flame or floating flame Check all screws around flue outlets and burner compartment Tighten as necessary Cracked heat ex...

Page 108: ...108 Fig 16 IGC Service Analysis Logic LEGEND NOTE Thermostat Fan Switch is in the AUTO position IDM Induced Draft Motor IGC Integrated Gas Unit Controller ...

Page 109: ...9 300 81 9 078 82 8 862 83 8 653 84 8 448 85 8 251 86 8 056 87 7 869 88 7 685 89 7 507 90 7 333 91 7 165 92 6 999 93 6 838 94 6 683 95 6 530 96 6 383 97 6 238 98 6 098 99 5 961 100 5 827 101 5 698 102 5 571 103 5 449 104 5 327 105 5 210 106 5 095 107 4 984 108 4 876 109 4 769 110 4 666 111 4 564 112 4 467 113 4 370 114 4 277 115 4 185 116 4 096 117 4 008 118 3 923 119 3 840 120 3 759 121 3 681 122...

Page 110: ... 588 18 86 463 17 81 662 16 77 162 15 72 940 14 68 957 13 65 219 12 61 711 11 58 415 10 55 319 9 52 392 8 49 640 7 47 052 6 44 617 5 42 324 4 40 153 3 38 109 2 36 182 1 34 367 0 32 654 1 31 030 2 29 498 3 28 052 4 26 686 5 25 396 6 24 171 7 23 013 8 21 918 9 20 883 10 19 903 11 18 972 12 18 090 13 17 255 14 16 474 TEMP C RESISTANCE Ohms 15 15 714 16 15 000 17 14 323 18 13 681 19 13 071 20 12 493 2...

Page 111: ...37 80 4 622 81 4 511 82 4 403 83 4 298 84 4 196 85 4 096 86 4 000 87 3 906 88 3 814 89 3 726 90 3 640 91 3 556 92 3 474 93 3 395 94 3 318 95 3 243 96 3 170 97 3 099 98 3 031 99 2 964 100 2 898 101 2 835 102 2 773 103 2 713 104 2 655 105 2 597 106 2 542 107 2 488 108 2 436 109 2 385 110 2 335 111 2 286 112 2 239 113 2 192 114 2 147 115 2 103 116 2 060 117 2 018 118 1 977 119 1 937 120 1 898 121 1 8...

Page 112: ...16 7 499 17 7 161 18 6 840 19 6 536 20 6 246 21 5 971 22 5 710 23 5 461 24 5 225 25 5 000 26 4 786 27 4 583 28 4 389 29 4 204 30 4 028 31 3 861 32 3 701 33 3 549 34 3 404 35 3 266 36 3 134 37 3 008 38 2 888 39 2 773 40 2 663 41 2 559 42 2 459 43 2 363 44 2 272 45 2 184 46 2 101 47 2 021 48 1 944 49 1 871 50 1 801 51 1 734 52 1 670 53 1 609 54 1 550 55 1 493 56 1 439 57 1 387 58 1 337 59 1 290 60 1...

Page 113: ...4 039 48 0 938 154 1 982 259 3 015 364 4 049 49 0 948 155 1 992 260 3 025 365 4 059 50 0 958 156 2 001 261 3 035 366 4 068 51 0 968 157 2 011 262 3 045 367 4 078 52 0 978 158 2 021 263 3 055 368 4 088 53 0 988 159 2 031 264 3 064 369 4 098 54 0 997 160 2 041 265 3 074 370 4 108 55 1 007 161 2 051 266 3 084 371 4 118 56 1 017 162 2 060 267 3 094 372 4 128 57 1 027 163 2 070 268 3 104 373 4 137 58 1...

Page 114: ... 208 211 1 705 292 2 201 50 0 718 131 1 214 212 1 711 293 2 207 51 0 724 132 1 220 213 1 717 294 2 213 52 0 730 133 1 226 214 1 723 295 2 220 53 0 736 134 1 233 215 1 729 296 2 226 54 0 742 135 1 239 216 1 735 297 2 232 55 0 748 136 1 245 217 1 741 298 2 238 56 0 754 137 1 251 218 1 747 299 2 244 57 0 761 138 1 257 219 1 754 300 2 250 58 0 767 139 1 263 220 1 760 301 2 256 59 0 773 140 1 269 221 1...

Page 115: ... 704 457 3 213 540 3 721 623 4 230 375 2 710 458 3 219 541 3 728 624 4 236 376 2 716 459 3 225 542 3 734 625 4 243 377 2 722 460 3 231 543 3 740 626 4 249 378 2 728 461 3 237 544 3 746 627 4 255 379 2 734 462 3 243 545 3 752 628 4 261 380 2 741 463 3 249 546 3 758 629 4 267 381 2 747 464 3 256 547 3 764 630 4 273 382 2 753 465 3 262 548 3 770 631 4 279 383 2 759 466 3 268 549 3 777 632 4 285 384 2...

Page 116: ...coil location Run Status VIEW C CAP Displays the current amount of unit cooling capacity in per cent of maximum Compare to staging tables in Appendix C Run Status VIEW CL ST Displays the current number of requested cooling stages Com pare to staging tables in Appendix C and to C CAP above Run Status VIEW HT C P Displays the current heating control point for use with staged gas or modulating gas co...

Page 117: ...cool ing stage For example If R PCT 0 2 and the control would be sub tracting 30 capacity by taking the next step down 0 2 times 30 6 F SUB R Rise Per Percent Capacity R PCT This is a real time calculation that represents the amount of de grees of drop rise across the evaporator coil versus percent of current running capacity R PCT MAT EDT C CAP Cap Deadband Subtracting Y MIN This is a control var...

Page 118: ...e to EDT If stages could reliably be ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS COOL COOLING INFORMATION C CAP Current Running Capacity 0 100 CAPTOTAL CUR S Current Cool Stage 0 20 COOL_STG REQ S Requested Cool Stage 0 20 CL_STAGE MAX S Maximum Cool Stages 0 20 CLMAXSTG DEM L Active Demand Limit 0 100 DEM_LIM forcible SUMZ COOL CAP STAGE CONTROL SMZ Capacity Load Factor 400 400 SMZ ADD R Ne...

Page 119: ...LAY TABLE The Software Version Numbers Display Table displays the software version numbers of the unit boards and devices See Table 91 Table 86 VFD Information Display Table ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS VFDS VFD INFORMATION S VFD SUPPLY FAN VFD VFD 1 SPD VFD1 Actual Speed 0 100 VFD1_SPD RPM VFD1 Actual Motor RPM 0 30000 VFD1RPM FREQ VFD1 Actual Motor Freq 0 500 VFD1FREQ AMPS V...

Page 120: ...nfig HR A2 Compressor A2 Run Hours 0 999999 HRS HOURS_A2 config HR A3 Compressor A3 Run Hours 0 999999 HRS HOURS_A3 config HR A4 Compressor A4 Run Hours 0 999999 HRS HOURS_A4 config HR B1 Compressor B1 Run Hours 0 999999 HRS HOURS_B1 config HR B2 Compressor B2 Run Hours 0 999999 HRS HOURS_B2 config HR B3 Compressor B3 Run Hours 0 999999 HRS HOURS_B3 config HR B4 Compressor B4 Run Hours 0 999999 HR...

Page 121: ...f Manual T052 Circuit A Compressor 2 Failure Compressor locked off after 3 strikes Automatic then manual after 3 strikes A052 Circuit A Compressor 2 Stuck On Failure Compressor locked off Manual T053 Circuit A Compressor 3 Failure Compressor locked off after 3 strikes Automatic then manual after 3 strikes A053 Circuit A Compressor 3 Stuck On Failure Compressor locked off Manual T054 Circuit B Comp...

Page 122: ...is in Emergency Stop Unit shut down Manual A152 Unit Down due to Failure No mechanical cooling available Automatic T153 Real Time Clock Hardware Failure Unit shut down Automatic A154 Serial EEPROM Hardware Failure Unit shut down Automatic T155 Serial EEPROM Storage Failure Error Alert only Automatic A156 Critical Serial EEPROM Storage Fail Error Unit shut down Automatic A157 A D Hardware Failure U...

Page 123: ... VFD Fault Unit shut down Manual T411 Exhaust Fan VFD Fault Unit shut down Manual T412 Dirty Post Air Filter Alert only Automatic A413 Air Pressure Safety Switch Trip Unit shut down Manual T414 Damper Air Not Modulating Alert only Manual P415 Main Air Filter Notification Change Soon Alert only Automatic P416 Post Air Filter Notification Change Soon Alert only Automatic T421 Thermostat Y2 Input On ...

Page 124: ...onomizing When it Should Alert only Automatic T656 Econ 3 Outside 2 Economizing When it Should Not Alert only Automatic T657 Econ 3 Outside 2 Damper Stuck or Jammed Alert only Automatic A660 Heating Actuator 3 Out of Calibration Alert only Automatic A661 Heating Actuator 3 Comm Failure Alert only Automatic T662 Heating Actuator 3 Control Range Increased Alert only Automatic A663 Heating Actuator 3...

Page 125: ... and observe compressor operation to verify that compressor current sensor is working and condenser fans are energized A051 Circuit A Compressor 1 Stuck On Failure A052 Circuit A Compressor 2 Stuck On Failure A053 Circuit A Compressor 3 Stuck On Failure A059 Circuit A Compressor 4 Stuck On Failure A054 Circuit B Compressor 1 Stuck On Failure A055 Circuit B Compressor 2 Stuck On Failure A056 Circui...

Page 126: ...de the range Run Status EXVS CTRL C SHS Configuration IAQ PROG AC DB at the end of running the EXVs auto component test this alert will be logged Recovery is automatic The reason for this alert is that the superheat set point is not being held by EXV T066 EXV B1 Superheat Outside Range T067 EXV B2 Superheat Outside Range If the Circuit B EXV superheat Temperatures REF T SH B1 SH B2 is outside the ...

Page 127: ...r Pressures REF P SP A SP B fails Recovery from this alert is automatic Reason for error is either a faulty sensor wiring error or damaged input on the MBB control board T094 Circ A EXV 1 Thermistor Failure T095 Circ A EXV 2 Thermistor Failure The associated circuit becomes disabled whenever this therm istor Temperatures REF T ASX1 ASX2 fails Recovery from this alert is automatic Reason for error ...

Page 128: ... or Temperatures REF T SCT B rise above the compressor operating enve lope for the corresponding Temperatures REF T SST A or Temperatures REF T SST B a compressor of the affected circuit will be immediately shut down with pre alert P126 P127 and a 10 minute timeguard will be added to the com pressor If the saturated condensing temperature remains above the envelope for 5 more seconds another compr...

Page 129: ...85 driv ers on the LEN bus A171 Staged Gas Control Board Comm Failure Staged Heating is disabled until communication with the staged gas control board is re established Recovery is automatic Rea son for failure may be due to incorrect wiring power loss to the staged gas control board or damage to the RS 485 drivers on the LEN bus T172 Control Expansion Module Comm Failure Any function associated w...

Page 130: ...configurable SPT HighAlert Limits occupied Configuration IAQ ALLM SP H O for 5 minutes or unoccupied Configuration IAQ ALLM SP H U for 10 minutes then an alert will be broadcast The alert will automatically reset T302 Supply Temperature Below Limit If the supply air temperature measured by the supply tempera ture sensor is below the configurable SAT LO Alert Limit Occ Configuration IAQ ALLM SA L O...

Page 131: ...cur This is an emergency mode requiring the complete shutdown of the unit Recovery is automatic when the inputs are no longer on A405 Evacuation Emergency Mode If the evacuation input on the CEM is energized an evacuation mode occurs which flags an alarm This mode attempts to low er the pressure of the space to prevent smoke from moving into another space This is the reverse of the Pressurization ...

Page 132: ...dles some conditions of an incorrectly wired thermostat and may prevent multiple alerts and recoveries from clogging the alarm histories T423 Thermostat Y and W Inputs On Simultaneous calls for heating and cooling are illegal and will be alarmed Cooling and heating will be locked out Recovery is automatic when the condition no longer exists T424 Thermostat G Input Off On a Cooling Call If G is off...

Page 133: ...1 Outside 1 Not Economizing When it Should T625 Econ 2 Return Not Economizing When It Should T655 Econ 3 Outside 2 Not Economizing When it Should When the control detects a stuck or jammed actuator it shall com pare the stuck position to the command position to log additional alerts If the stuck position commanded position the alert is set T616 Econ 1 Outside 1 Economizing When It Should Not T626 ...

Page 134: ...w Heat Units Fig 26 page 143 Typical Power Component Control Wiring 460 v Fig 28 page 145 Typical Power Component Control Wiring 575 v Fig 29 page 146 090 to 105 Power Wiring Fig 19 page 136 Typical Gas Heat Section Wiring Low Heat Units Fig 25 page 142 Typical Modulating Gas Heat Section Wiring Low Heat Units Fig 26 page 143 Typical Power Component Control Wiring 460 v Fig 28 page 145 Typical Pow...

Page 135: ...135 Fig 18 48 50N Typical Power Schematic Nominal 075 Ton Unit Shown ...

Page 136: ...136 Fig 19 48 50N Typical Power Schematic Nominal Ton 90 150 Units Shown ...

Page 137: ...137 Fig 20 48 50N Main Base Board Input Output Connections ...

Page 138: ...138 Fig 21 48 50N RXB EXB CEM Input Output Connections a48 9307 ...

Page 139: ...139 Fig 22 48 50N EXV SCB Input Output Connections a48 9308 ...

Page 140: ...140 Fig 23 48N Typical Modulating Gas Heat Unit Control Wiring ...

Page 141: ...141 Fig 24 50N Typical Electric Heat Unit Control Wiring ...

Page 142: ...142 Fig 25 48N Typical Gas Heat Section Wiring Nominal Ton 75 to 105 Low Heat Units CONTINUED ON GAS HEAT UNIT CONTROL WIRING ...

Page 143: ...143 Fig 26 48N Typical Modulating Gas Heat Section Wiring Nominal Ton 75 to 105 Low Heat Units CONTINUED ON GAS HEAT UNIT CONTROL WIRING ...

Page 144: ...144 Fig 27 48N Typical Gas Heat Section Wiring Nominal Ton 120 to 150 Units ...

Page 145: ...145 Fig 28 48 50N Typical Power Component Control Wiring 460 v ...

Page 146: ...146 Fig 29 48 50N Component Control Wiring 575 v Nominal Ton 075 to 150 Units ...

Page 147: ...147 Fig 30 48 50N Component Arrangement Power Box ...

Page 148: ...148 Fig 31 48 50N Component Arrangement Control Box ...

Page 149: ...er Solenoid PS Pressure Switch ECC Evaporative Condenser Control PTC Positive Temperature Coefficient Power Reference ECON Economizer RACFM Return Air CFM EQUIP Equipment RAT Return Air Thermistor EXV Electronic Expansion Valve RF Return Fan FS Filter Switch RFCB Return Fan Circuit Breaker FS FP Filter Switch Filter Pressure RFM Return Fan Motor FTS Filter Switch RGT Return Gas Thermistor FU Fuse ...

Page 150: ...le 96 STAGED GAS HEAT BOARD SCB When optional modulating gas heat is used the SCB board is in stalled and controls additional stages of gas heat See Fig 34 The SCB also provides additional sensors for monitoring of the sup ply air and limit switch temperatures For units equipped with modulating gas heat the SCB provides the 4 to 20 mA signal to the SC30 board that sets the modulating gas section c...

Page 151: ...5 ABB VFD1 X 12 17 Not Used Not Used VFD1 DI6 State DI6 ABB VFD1 X 12 18 Not Used Not Used VFD2 AI1 of range AI1 ABB VFD2 X 2 3 ABB VFD P E or Ret Exh Fan VFD Not Used Not Used VFD2 AI2 of range AI2 ABB VFD2 x 5 6 Not Used Not Used VFD2 DI1 State DI1 ABB VFD2 X 12 13 Not Used Not Used VFD2 DI2 State DI2 ABB VFD2 X 12 14 Not Used Not Used VFD2 DI3 State DI3 ABB VFD2 X 12 15 Not Used Not Used VFD2 D...

Page 152: ... 4 20mA AN1 RXB J5 1 3 SP Static Pressure Transducer 4 20mA AN2 RXB J5 4 6 CCT Air Temp Lvg Evap Coil Thermistor AN3 RXB J6 1 2 DTA1 A1 Discharge Temperature Thermistor AN4 RXB J6 3 4 RGTA Suction Gas Temp Cir A Thermistor AN5 RXB J6 5 6 APS Air Pressure Switch Thermistor AN6 RXB J6 7 8 OUTPUTS MMV_A Motor Master VFD A 4 20mA RXB J9 1 2 Belimo Actuators Digital PP MP RXB J7 1 3 ECONCPOS Econ Actua...

Page 153: ...Plenum Press Safety Sw Switch Input DI1 EXB J4 1 2 SACFM Supply Air CFM Transducer 4 20mA AN1 EXB J5 1 3 RACFM Return Air CRM Transducer 4 20mA AN2 EXB J5 4 6 OUTPUTS MMV_B Motor Master VFD B 4 20mA AO1 EXB J9 1 2 CMPA1CAP Compressor A1 Solenoid Digital PP MP EXB J7 1 3 HUMIDRLY Humidifier Relay Relay RLY1 EXB J8 1 3 SFBYRLY Supply Fan Bypass Relay Relay RLY2 EXB J8 4 6 PEBYRLY PE Ret Fan Bypass R...

Page 154: ...PMENT NETWORK J2 J1 PWR J4 LEN LEN J3 4 POSITION DIP SWITCH PWR 1 13 10 7 XDCR THERM 4 1 J6 J5 7 4 1 3 1 3 1 J8 0 20mA OUT J7 THERM XDCR THERM 1 4 13 10 7 RELAYS J9 CEBD430427 HK50AA032 CEPL130427 CEBD430351 TEST 1 CEPL130351 01 PWR TEST 2 J1 J2 J4 J3 J5 J6 J7 LEN STATUS RED LED STATUS GREEN LED LEN LOCAL EQUIPMENT NETWORK ADDRESS DIP SWITCH ALL ON ...

Page 155: ... 4 6 LAT2SGAS Staged Gas LAT 2 Thermistor Transducer 0 5V AN3 SCB J5 7 9 LAT3SGAS Staged Gas LAT 3 Thermistor Transducer 0 5V AN4 SCB J5 10 12 Not Used Not Used Thermistor Transducer 0 5V AN5 SCB J5 13 15 LP_A Circuit A Liquid Pressure Transducer Thermistor Transducer 0 5V AN6 SCB J6 1 3 LP_B Circuit B Liquid Pressure Transducer Thermistor Transducer 0 5V AN7 SCB J6 4 6 Not Used Not Used Thermisto...

Page 156: ...YIN Supply Fan Bypass Input Thermistor AN4 EXV A J5 11 12 Not Used Not Used Transducer 4 20mA AN5 EXV A J5 1 2 Not Used Not Used Transducer 4 20mA AN6 EXV A J5 3 4 OUTPUTS CA_EXV1 Circuit A EXV 1 Stepper Motor EXV 1 EXVA J6 1 5 CA_EXV2 Circuit B EXV 1 Stepper Motor EXV 2 EXVA J7 1 5 POINT NAME POINT DESCRIPTION TYPE OF I O I O POINT NAME CONTROL BOARD CONNECTOR PIN NO INPUTS CBSTEXV1 Cir B EXV1 Su...

Page 157: ... T55 1 Space Sensor TH Thermistor Input T55 2 Space Sensor COM Thermistor Input T55 3 Space Sensor Offset Switch Thermistor Input CCN Communication COM CCN Common Communication CCN Communication SHIELD Ground Ground LEN Local Equipment Network Communication CCN Carrier Comfort Network Communication TB202 FIELD CONNECTIONS CEM in Main Control Box TB202 1 Not Used 2 Not Used 3 Space Humidity 4 20 mA...

Page 158: ...ntrol Box TB203 1 Filter Pressure Switch Sensor Return 4 20 mA loop when used with 180 Ohm resistor 2 Filter Pressure Switch Sensor Return 4 20 mA signal when used with 180 Ohm resistor 3 Filter Pressure Switch Sensor Supply 4 20 mA loop when used with 180 Ohm resistor 4 Filter Pressure Switch Sensor Supply 4 20 mA signal when used with 180 Ohm resistor 5 Filter Pressure Sensor Return 24 VDC 4 20 ...

Page 159: ...uctor cable with drain wire and is field supplied and in stalled See the Installation Instructions for wiring information The system elements are connected to the communication bus in a daisy chain arrangement The positive pin of each system element communication connector must be wired to the posi tive pins of the system elements on either side of it This is also required for the negative and sig...

Page 160: ...trols Alarms R CUR Yes Table 108 VFD Terminal Designations POWER EXHAUST The units can be equipped with an optional power exhaust sys tem The power exhaust fan is a belt driven forward curved fan For modulating CV or VAV applications the fan is con trolled by the ComfortLink controls based on building pressure sensed by the building pressure transducer The fan speed is modulated to maintain the bu...

Page 161: ... same time FAN STATUS SWITCH The units can be equipped with an optional fan status switch that will monitor the pressure rise across the indoor fans RETURN AIR CO2 SENSOR The unit can be equipped with a return air IAQ CO2 sensor that is used for the demand controlled ventilation The sensor is located in the return air section and can be accessed from the filter access door BOARD ADDRESSES Each boa...

Page 162: ...ED MIXING BOX TO ADDITIONAL TERMINALS HEATING COOLING UNITS BUILDING SUPERVISOR ROOFTOP UNIT CL ROOFTOP UNIT CL ROOFTOP UNIT CL ROOFTOP UNIT CL CCN BUS CL COMFORT CONTROLLER LEGEND CCN Carrier Comfort Network CL ComfortLink Controls DAV Digital Air Volume HVAC Heating Ventilation and Air Conditioning TCU Terminal Control Unit 24 V GND DCOM DI 1 DI 2 DI 3 DI 4 DI 5 DI 6 SCR B A AGND SCR 10 11 12 13...

Page 163: ...outlet A1 is top coil A2 is bottom coil HH79NZ014 2 ST B1 ST B2 Suction Thermistor Circuits B1 and B2 Located in well in evaporator outlet B1 is top coil B2 is bottom coil HH79NZ014 2 LT_A Liquid Line Thermistor Circuit A Located in evaporator section on inlet to EXV A1 and A2 HH79EZ003 LT_B Liquid Line Thermistor Circuit B Located in evaporator section on inlet to EXV B1 and B2 HH79EZ003 Control ...

Page 164: ...hain to the adjacent clip See Fig 40 To close the door reverse the procedure The unit is also equipped with removable panels to gain access to areas that do not normally require service To remove panel remove 3 screws at the bottom of panel lift panel vertically us ing handle provided Next pull bottom of panel out then lower down until the top of the panel clears the top rail See Fig 41 Fig 39 Ope...

Page 165: ...ss panel flue box cover and main burner assembly Fig 42 and 43 If cleaning is required remove heat exchanger baffles and clean tubes with a wire brush PRESSURE SWITCH 48N MODULATING GAS ONLY Inspect the riveted surface of the pressure fitting see Fig 44 by removing the flue box cover Clean as necessary to ensure the proper function of the combustion air proving switch When reassembling the flue bo...

Page 166: ...LATING GAS VALVE PRESSURE TUBING PRESSURE SWITCH NOTE Modulating Gas Always Section 1 PRESSURE FITTING See Detail A Fig 44 FLUE OUTLET GAS VALVE PRESSURE FITTING SEE DETAIL A MODULATING GAS VALVE FLUE BOX COVER PRESSURE TUBING PRESSURE SWITCH DETAIL A FLUE BOX COVER PRESSURE FITTING ...

Page 167: ...167 Fig 45 Standard Gas Burner Details Fig 46 Modulating Gas Burner Assembly FLAME SENSOR IGNITOR GAS VALVE ROLLOUT SWITCH FLAME SENSOR IGNITION MODULATING GAS VALVE GAS VALVE ROLLOUT SWITCH ...

Page 168: ...168 Fig 47 Sensor and Ignition Position Fig 48 Combustion Blower Details SENSOR DETAILS IGNITION DETAILS ...

Page 169: ...e belts have run in Check tension periodically thereafter and keep it at the recommended tension Fig 51 Motor Plate Adjustment PULLEY ALIGNMENT For proper belt life the motor and fan pulleys must be properly aligned To check first turn off unit power Place a straightedge against the motor and fan pulleys See Fig 52 If the pulleys are properly aligned the straightedge should be parallel to the belt...

Page 170: ...Fan Position Plastic Fan AIR PRESSURE TRANSDUCER FIELD ADJUSTMENT All transducers have been factory calibrated and should not re quire field adjustment If field adjustment is necessary follow the instructions below To re calibrate a transducer 1 Shut the unit power off 2 Take the wiring and pressure tubing off the transducer Take the transducer out of the unit 3 Connect a 24 vdc power supply to tr...

Page 171: ...st once a year Electronic Expansion Valve EXV Each circuit has 2 EXVs on which superheat may be adjusted if necessary by using the ComfortLink controller Adjustment is not normally required or recommended The TXV is set to maintain 10 to 13 F superheat leaving the evaporator coil It controls the flow of refrigerant to the evapo rator coils Refrigeration Circuits LEAK TESTING Units are shipped with...

Page 172: ... end of the 5 minute period switch back into Cool ing mode through the Service Test function Service Test COOL RHV by switching RHV to OFF 4 Using the cooling charging charts provided Fig 56 77 add or remove refrigerant until conditions of the chart are met As conditions get close to the point on the chart add or remove charge in 1 4 lb increments until complete See paragraph To Use the Cooling Ch...

Page 173: ...5 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 174: ... 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 175: ...5 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 176: ... 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 177: ...65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 178: ...0 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 179: ...65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 180: ...0 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 181: ...65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 182: ...0 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 183: ...65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST 155 145 135 125 115 105 95 85 75 65 40 60 50 70 90 40 80 40 100 120 110 OUTDOOR AIR TEMPERATURE F SATURATED DISCHARGE TEMPERATURE F REDUCE CHARGE IF ABOVE ADD CHARGE IF BELOW CURVE 55 SST 45 SST 35 SST ...

Page 184: ...3 Turn adjustment screw using a small screwdriver to the desired low fire adjustment NOTE Clockwise screw rotation reduces flow rate Do not over tighten MAIN BURNERS For all applications main burners are factory set and should re quire no adjustment MAIN BURNER REMOVAL AND REPLACEMENT 1 Shut off field supplied manual main gas valve 2 Shut off power to unit 3 Remove gas section access door door fra...

Page 185: ...tector resets which may take up to 2 hours Fig 81 Advanced Scroll Temperature Protection Label Crankcase Heater Each compressor has a crankcase heater to prevent absorption of liquid refrigerant by oil in the crankcase when the compres sor is idle Since 115 v power for the crankcase heaters is drawn from the unit control circuit main unit power must be on for the heaters to be energized Fig 82 Rec...

Page 186: ...xt to ignition and modulating gas controllers in the gas section ROLLOUT SWITCH This switch senses any flame or excessive heat in the main burn er compartment and deenergizes the gas valve If this occurs the gas heating system is locked out 7 flashes on IGC board until the rollout switch is reset manually Reset rollout switch manual ly by powering down and powering up of the unit When the rollout ...

Page 187: ...C DDBD OAT RAT Lockout No Yes DDBCSTAT 81 118 OAEC OAEC OA Enth Lockout No Yes OAECSTAT 81 118 DEC DEC Diff Enth Lockout No Yes DEC_STAT 81 118 EDT EDT Sensor Bad No Yes EDT_STAT 81 118 OAT OAT Sensor Bad No Yes OAT_STAT 81 118 FORC Economizer Forced No Yes ECONFORC 81 118 SFON Supply Fan Not On 30s No Yes SFONSTAT 81 118 CLOF Cool Mode Not In Effect No Yes COOL_OFF 81 118 OAQL OAQ Lockout in Effe...

Page 188: ...que 200 to 200 VFD1TORQ 119 PWR VFD1 Actual Motor Power 150 to 150 kW VFD1PWR 119 VDC VFD1 DC Bus Voltage 0 to 1000 voltage VFD1VDC 119 V OUT VFD1 Output Voltage 0 to 1000 voltage VFD1VOUT 119 TEMP VFD1 Transistor Temp C 0 to 150 VFD1TEMP 119 RUN T VFD1 Cumulative Run Time 0 to 65535 hours VFD1RUNT 119 KWH VFD1 Cumulative kWh 0 to 65535 VFD1KWH 119 LFC VFD1 Last Fault Code 0 to 65535 VFD1LFC 119 E...

Page 189: ...RT COMPRESSOR STARTS ST A1 Compressor A1 Starts 0 to 999999 CY_A1 config 120 ST A2 Compressor A2 Starts 0 to 999999 CY_A2 config 120 ST A3 Compressor A3 Starts 0 to 999999 CY_A3 config 120 ST A4 Compressor A4 Starts 0 to 999999 CY_A4 config 120 ST B1 Compressor B1 Starts 0 to 999999 CY_B1 config 120 ST B2 Compressor B2 Starts 0 to 999999 CY_B2 config 120 ST B3 Compressor B3 Starts 0 to 999999 CY_B...

Page 190: ... to 100 HUMDCANG 30 HTC C Ht Coil Command Position 0 to 100 HTCLACTS 30 HT CL Heating Coil Act Cal Cmd No Yes HCOILCAL 30 HTC A Heat Coil Act Ctl Angle 0 to 100 HTCLCANG 30 HMD C Humidifier Command Pos 0 to 100 HUMD_TST 30 HM CL Humidifier Act Cal Cmd No Yes HUMIDCAL 30 HMD A Humidifier Act Ctrl Ang 0 to 100 HUMDCANG 30 HTC 3 Ht Coil Command Position 0 to 100 HTC3ACTS 30 HC 3L Heat Coil Act 3 Cal ...

Page 191: ...CP TS COMPRESSOR AUTO TEST 31 34 35 CP TR Run Compressor Auto Test No Yes AC_CT 31 CT ST Test Status Timer 0 to 1 DD_TEXT 31 35 SP A Cir A Suction Pressure 14 to 750 psig SP_A 31 35 SP B Cir B Suction Pressure 14 to 750 psig SP_B 31 35 RSLT COMPS AUTO TEST RESULTS 31 34 35 A1 Comp A1 Auto Test Result 0 to 3 AC_CP_A1 31 35 A2 Comp A2 Auto Test Result 0 to 3 AC_CP_A2 31 35 A3 Comp A3 Auto Test Resul...

Page 192: ...ML ST MLV HGBP AutoTest Result 0 to 3 AC_MLVST 32 36 SF TS SUPPLY FAN AUTO TEST 32 34 SF TR Run Supply Fan Auto Test No Yes AC_SF 32 36 SF DT Test Status Timer 0 to 1 DD_TEXT 32 36 S VFD VFD1 Actual Speed 0 to 100 VFD1_SPD 32 36 S PWR VFD1 Actual Motor Power 150 to 150 kW VFD1PWR 32 36 SP Static Pressure 20 to 20 H20 SP 32 36 SF ST SF Auto Test Result 0 to 3 AC_SF_ST 32 36 EC TS ECONOMIZER AUTO TE...

Page 193: ...mp 40 to 240 dF CASTEXV1 ASX2 Cir A EXV2 Suction Temp 40 to 240 dF CASTEXV2 BSX1 Cir B EXV1 Suction Temp 40 to 240 dF CBSTEXV1 BSX2 Cir B EXV2 Suction Temp 40 to 240 dF CBSTEXV2 SH A1 Cir A EXV1 Superheat Tmp 100 to 200 F SH_A1 SH A2 Cir A EXV2 Superheat Tmp 100 to 200 F SH_A2 SH B1 Cir B EXV1 Superheat Tmp 100 to 200 F SH_B1 SH B2 Cir B EXV2 Superheat Tmp 100 to 200 F SH_B2 MODE PRESSURES ITEM EX...

Page 194: ...CSB_B4 STAT THERMOSTAT INPUTS G Thermostat G Input Off On G forcible W1 Thermostat W1 Input Off On W1 forcible W2 Thermostat W2 Input Off On W2 forcible Y1 Thermostat Y1 Input Off On Y1 forcible Y2 Thermostat Y2 Input Off On Y2 forcible FIRE FIRE SMOKE INPUTS FSD Fire Shutdown Input Normal Alarm FSD forcible PRES Pressurization Input Normal Alarm PRES forcible EVAC Evacuation Input Normal Alarm EV...

Page 195: ...a 2 to 2 SAMATRIM config RAC M RACFM Milliamps 0 to 22 ma RACFM_MA RA M T Return Air CFM Trim ma 2 to 2 RAMATRIM config EAC M EACFM milliamps 0 to 22 ma EACFM_MA EA M T Exh Air CFM Trim ma 2 to 2 EAMATRIM config OAC M OACFM Milliamps 0 to 22 ma OACFM_MA OA M T Outside Air CFM Trim ma 2 to 2 OAMATRIM config BP M BP Milliamps 0 to 22 ma BP_MA BP M T Bldg Pressure Trim ma 2 to 2 BPMATRIM config SP M ...

Page 196: ...SP A2 EX Circuit A EXV 2 Position 0 to 100 XV2APOSP B1 EX Circuit B EXV 1 Position 0 to 100 XV1BPOSP B2 EX Circuit B EXV 2 Position 0 to 100 XV2BPOSP HEAT HEATING HT 1 Heat Relay 1 Off On HS1 H1 CP Modulating Heat Capacity 0 to 100 HTMG_CAP HT 2 Heat Relay 2 Off On HS2 HT 3 Relay 3 W1 Gas Valve 2 Off On HS3 HT 4 Relay 4 W2 Gas Valve 2 Off On HS4 HT 5 Relay 5 W1 Gas Valve 3 Off On HS5 HT 6 Relay 6 ...

Page 197: ...Sensor Disable Enable RARHSENS Disable 42 44 MRH S Mixed Air RH Sensor Disable Enable MARHSENS Disable 42 44 FACT FACTORY CONFIGURATION MD MN Model Number MODEL_NM 42 44 F RST Perform Factory Restore 0 to 1 FACT_RST 0 42 44 COOL COOLING CONFIGURATION A1 EN Enable Compressor A1 Disable Enable CMPA1ENA Enable 45 48 A2 EN Enable Compressor A2 Disable Enable CMPA2ENA Enable 45 48 A3 EN Enable Compress...

Page 198: ...Detect Time 15 to 900 FL_DETTM 120 47 48 E PID EXV PID CONFIGS EX RR EXV PID Run Rate 5 to 120 Seconds EXV_RATE 5 48 EX PG EXV PID Prop Gain 0 to 5 EXV_PG 0 5 48 EX TI EXV Integration Time 0 5 to 60 EXV_TI 50 48 EX HO High OAT Lim EXV Gain 50 to 95 dF HIGHOAT 70 48 EX LO Low OAT Lim EXV Gain 40 to 80 dF LOWOAT 60 48 EX FG EXV Move on Cir Stg Up 0 to 100 EXV_FF_G 10 48 EX FD EXV Move on Cir Stg Dw ...

Page 199: ...C2 Ctl Ang Lo Lim 0 90 HTC2CALM 0 60 64 SN 3 1 HTC3 Serial Number 1 0 9999 HTC3_SN1 0 60 64 SN 3 2 HTC3 Serial Number 2 0 6 HTC3_SN2 0 60 64 SN 3 3 HTC3 Serial Number 3 0 9999 HTC3_SN3 0 60 64 SN 3 4 HTC3 Serial Number 4 0 254 HTC3_SN4 0 60 64 C A L3 HTC3 Ctrl Angle Lo Limit 0 90 HTC3CALM 0 60 64 SN 4 1 HTC4 Serial Number 1 0 9999 HTC4_SN1 0 60 64 SN 4 2 HTC4 Serial Number 2 0 6 HTC4_SN2 0 60 64 S...

Page 200: ...OAT Lock 40 to 70 dF UEFCNTLO 50 76 ACT C ECON ACTUATOR CONFIGS 27 76 SN 1 1 Econ 1 Out Ser Number 1 0 to 9999 ECN1_SN1 0 76 SN 1 2 Econ 1 Out Ser Number 2 0 to 6 ECN1_SN2 0 76 SN 1 3 Econ 1 Out Ser Number 3 0 to 9999 ECN1_SN3 0 76 SN 1 4 Econ 1 Out Ser Number 4 0 to 254 ECN1_SN4 0 76 C A L1 Ecn1 Out Ctl Angl Lo Lmt 0 to 90 ECONCALM 85 76 SN 2 1 Econ 2 Ret Ser Number 1 0 to 9999 ECN2_SN1 0 76 SN 2...

Page 201: ...0 Seconds BPIDRATE 10 82 BP P Bldg Press Prop Gain 0 to 5 BLDGP_PG 0 5 82 BP I Bldg Press Integ Gain 0 to 2 BLDGP_IG 0 5 82 83 BP D Bldg Press Deriv Gain 0 to 5 BLDGP_DG 0 3 82 83 D LV T COOL HEAT SETPT OFFSETS L H ON Dmd Level Lo Heat ON 0 to 2 F DMDLHON 1 5 51 62 H H ON Dmd Level Hi Heat ON 0 5 to 20 F DMDHHON 0 5 51 62 L H OF Dmd Level Lo Heat OFF 0 5 to 2 F DMDLHOFF 1 51 62 L C ON Dmd Level Lo...

Page 202: ...in 0 to 5 HUMID_DG 0 3 88 ACT C HUMIDIFIER ACTUATOR CFGS SN 1 Humd Serial Number 1 0 to 9999 HUMD_SN1 0 88 89 SN 2 Humd Serial Number 2 0 to 6 HUMD_SN2 0 88 89 SN 3 Humd Serial Number 3 0 to 9999 HUMD_SN3 0 88 89 SN 4 Humd Serial Number 4 0 to 254 HUMD_SN4 0 88 89 C A LM Humd Ctrl Angle Lo Limit 0 to 90 HUMDCALM 85 88 89 DEHU DEHUMIDIFICATION CONFIG D SEL Dehumidification Config 0 to 5 DHSELECT 0 ...

Page 203: ...to 10 F RAT_TRIM 0 96 97 OAT T OAT Trim 10 to 10 F OAT_TRIM 0 96 97 SPT T SPT Trim 10 to 10 F SPT_TRIM 0 96 97 L SW T Limit Switch Trim 10 to 10 F LSW_TRIM 0 96 97 CCT T Air Tmp Lvg Evap Trim 10 to 10 F CCT_TRIM 0 96 97 DTA 1 A1 Discharge Temp Trim 10 to 10 F DTA1TRIM 0 96 97 SP A T Suct Press Circ A Trim 50 to 50 F SPA_TRIM 0 96 97 SP B T Suct Press Circ B Trim 50 to 50 PSIG SPB_TRIM 0 96 97 DP A...

Page 204: ...VFD2 Switching Frequency 0 to 3 VFD2SWFQ 2 99 FLTC FILTER CONFIGURATION FS FT Filter Stat Fault Timer 0 to 10 Minutes FS_FT 2 72 73 F NOT Filter Notification Cut 20 to 50 FS_NOTIF 25 F ALT Filter Alert Cutoff 0 to 20 FS_ALERT 10 MFL S Main Filter Status Cfg 0 to 5 FLTS_ENA 0 42 73 MF TY Main Filter Type 0 to 9 MF_TY 0 72 MF FR Main Filter Final Resis 0 to 10 MF_FR 1 72 MF LT Main Filter Life 0 to ...

Page 205: ...Repeated for holidays 2 to 30 101 DAY S DAYLIGHT SAVINGS TIME DS ST DAYLIGHT SAVINGS START 101 ST MN Month 1 to 12 STARTM 3 101 ST WK Week 1 to 5 STARTW 2 101 ST DY Day 1 to 7 STARTD 7 101 MIN A Minutes to Add 0 to 90 MINADD 60 101 DS SP DAYLIGHTS SAVINGS STOP SP MN Month 1 to 12 STOPM 11 101 102 SP WK Week 1 to 5 STOPW 1 101 102 SP DY Day 1 to 7 STOPD 7 101 102 MIN S Minutes to Subtract 0 to 90 M...

Page 206: ...iquid Temp degF SLTA Cir A Liquid Temperature degF LT_A Cir A Subcooling Temp deltaF SC_A A1 Discharge Temperature degF DTA1 forcible Suction Gas Temp Circ A degF RGTA forcible Compressor A1 Relay Off On CMPA1 Compressor A2 Relay Off On CMPA2 Compressor A3 Relay Off On CMPA3 Compressor A4 Relay Off On CMPA4 Compressor A1 Feedback Off On CSB_A1 Compressor A2 Feedback Off On CSB_A2 Compressor A3 Fee...

Page 207: ...cono Current Min Pos ECMINPOS forcible Econo Current Min CFM CFM ECMINCFM Outside Air CFM CFM OACFM GENERAL Occupied No Yes OCCUPIED forcible Static Pressure in H2O SP forcible Building Pressure in H2O BP forcible Outside Air CFM CFM OACFM Return Air CFM CFM RACFM Exhaust Air CFM CFM EACFM Supply Air CFM CFM SACFM Mixed Air Rel Humidity MARH forcible Outside Air Rel Humidity OARH forcible Return A...

Page 208: ...Heat Mode End degF OCHT_END Occupied Heat Mode Start degF OCHTSTRT Unoccup Heat Mode End degF UCHT_END Unoccup Heat Mode Start degF UCHTSTRT HVAC Mode 16 char ASCII Unoccup Cool Mode Start degF UCCLSTRT TEMPCTRL Evaporator Discharge Tmp degF EDT Leaving Air Temperature degF LAT Mixed Air Temperature degF MAT Controlling Return Temp degF RETURN_T forcible Controlling Space Temp degF SPACE_T forcibl...

Page 209: ...rmal Alarm PURG forcible IAQ Discrete Input Low High IAQIN forcible Dehumidify Switch Input Off On DHDISCIN forcible Air Press Safety Switch Low High APS forcible Supply Fan Bypass Input Off On SFBYIN forcible Power Exh Bypass Input Off On PEBYIN forcible UOUTPUT1 FANS Supply Fan Bypass Relay Off On SFBYRLY Supply Fan Commanded SFAN_VFD Supply Fan Request No Yes SFANFORC forcible Exhaust Fan Comma...

Page 210: ...VFD1VDC VFD1 Output Voltage volts VFD1VOUT VFD1 Transistor Temp C VFD1TEMP VFD1 Cumulative Run Time hours VFD1RUNT VFD1 Cumulative kWh VFD1KWH VFD1 Last Fault Code VFD1LFC VFD1 DI1 State Open Close VFD1_DI1 forcible VFD1 DI2 State Open Close VFD1_DI2 forcible VFD1 DI3 State Open Close VFD1_DI3 forcible VFD1 DI4 State Open Close VFD1_DI4 forcible VFD1 DI5 State Open Close VFD1_DI5 forcible VFD1 DI6...

Page 211: ...Broadcast Off On OARHBC Off CCN OAQ Broadcast Off On OAQBC Off Global Schedule Broadcst Off On GSBC Off CCN Broadcast Ack er Off On CCNBCACK Off Daylight Savings Start Month STARTM 3 Week STARTW 2 Day STARTD 7 Minutes to Add MINADD 60 Daylight Savings Stop Month STOPM 11 Week STOPW 1 Day STOPD 7 Minutes to Subtract MINSUB 60 SCHEDOVR Schedule Number SCHEDNUM 0 Accept Global Holidays No Yes HOLIDAY...

Page 212: ...HTCLCALM 85 Econ 3 Out Ser Number 1 ECN3_SN1 0 Econ 3 Out Ser Number 2 ECN3_SN2 0 Econ 3 Out Ser Number 3 ECN3_SN3 0 Econ 3 Out Ser Number 4 ECN3_SN4 0 Ecn3 Out Ctl Angl Lo Lmt ECN3CALM 85 ALLM SPT lo alert limit occ degF SPLO 60 SPT hi alert limit occ degF SPHO 85 SPT lo alert limit unocc degF SPLU 45 SPT hi alert limit unocc degF SPHU 100 EDT lo alert limit occ degF SALO 40 EDT hi alert limit oc...

Page 213: ... Enable CSB_B3EN Enable CSB B4 Feedback Alarm Disable Enable CSB_B4EN Enable Capacity Threshold Adjst Z_GAIN 1 Compressor Lockout Temp degF OATLCOMP 40 Lead Lag Configuration LEAD_LAG 0 High Capacity Evaporator No Yes HCAPEVAP No High Efficiency OD Fans No Yes HIGH_EFF No Motor Master Control No Yes MOTRMAST No MM Setpoint Offset degF MMSPOFST 10 Maximum Condenser Temp degF SCT_MAX 115 Minimum Con...

Page 214: ...CONTRIM Yes Econ ChangeOver Select ECON_SEL 0 OA Enthalpy ChgOvr Selct OAEC_SEL 4 Outdr Enth Compare Value OAEN_CFG 24 High OAT Lockout Temp degF OAT_LOCK 60 OA Dewpoint Temp Limit degF OADEWCFG 55 Outside Air RH Sensor Disable Enable OARHSENS Disable Outdoor Air CFM Sensor Disable Enable OCFMSENS Disable Economizer Min Flow CFM OACFMMAX 2000 IAQ Demand Vent Min Flow CFM OACFMMIN 0 Econ Min Flow D...

Page 215: ...f Change Clr DP_RC_CL 1 DP Override Limit 1 DP_OD_L1 400 DP Override Limit 2 DP_OD_L2 500 DP Override Timeout DP_OD_TO 90 DP Override Percent DP_OD_PT 10 Enab Cir Shtdwn w flood FL_ENCSD Enable Flooding Detect Time secs FL_DETTM 120 HEAT Heating Control Type HEATTYPE 0 Heating Supply Air Setpt degF SASPHEAT 85 Occupied Heating Enabled No Yes HTOCCENA No MBB Sensor Heat Relocate No Yes HTLATMON No ...

Page 216: ... IAQREFH 2000 OAQ Low Reference OAQREFL 0 OAQ High Reference OAQREFH 2000 IAQ Purge No Yes IAQPURGE No IAQ Purge Duration mins IAQPTIME 15 IAQ Purge LoTemp Min Pos IAQPLTMP 10 IAQ Purge HiTemp Min Pos IAQPHTMP 35 IAQ Purge OAT Lockout degF IAQPNTLO 50 MM_CFG High Efficiency OD Fans No Yes HIGH_EFF No Motor Master Control No Yes MOTRMAST No Motor Master Setpoint degF MM_SP 105 MM Setpoint Offset de...

Page 217: ...g Evap Trim deltaF CCT_TRIM 0 A1 Discharge Temp Trim deltaF DTA1TRIM 0 Suction Gas Temp A Trim deltaF RGTATRIM 0 Cir A EXV 1 Temp Trim deltaF CAX1TRIM 0 Cir A EXV 2 Temp Trim deltaF CAX2TRIM 0 Cir B EXV 1 Temp Trim deltaF CBX1TRIM 0 Cir B EXV 2 Temp Trim deltaF CBX2TRIM 0 Suct Press Circ A Trim PSI SPA_TRIM 0 Suct Press Circ B Trim PSI SPB_TRIM 0 Dis Press Circ A Trim PSI DPA_TRIM 0 Dis Press Circ...

Page 218: ...VFD2NRPM 1750 VFD2 Nominal Motor HPwr VFD2NPWR 0 VFD2 Motor Direction VFD2MDIR 0 VFD2 Acceleration Time secs VFD2ACCL 30 VFD2 Deceleration Time secs VFD2DECL 30 VFD2 Switching Frequency VFD2SWFQ 2 VFD2 Type VFD2TYPE 0 GENERICS Target Point Name 8 char ASCII POINT_01 SPSP Target Point Name 8 char ASCII POINT_02 BPSP Target Point Name 8 char ASCII POINT_03 SCT_MIN Target Point Name 8 char ASCII POIN...

Page 219: ...SCII BEL_ACTU Econ 1 Out Act Curr Pos ECONOPOS Econ 2 Ret Act Curr Pos ECON2POS Econ 3 Out Act Curr Pos ECON3POS Econ 1 Out Act Cmd Pos ECONOCMD forcible Econ 2 Ret Act Curr Pos ECN2RPOS Econ 2 Ret Cmd Position ECN2CPOS forcible Humidifier Act Curr Pos HUMDRPOS Humidifier Command Pos HUMDCPOS Ht Coil Act Current Pos HTCLRPOS Ht Coil Command Position HTCLCPOS Econ 3 Out Act Curr Pos ECN3RPOS CIR_EX...

Page 220: ...Out No Yes CMPA4LOK Compressor A4 Strikes CMPA4STR Enable Compressor A4 Disable Enable CMPA4ENA config COMPRSRB Compressor B1 Relay Off On CMPB1 Circ B High Press Switch Low High CIRCBHPS forcible Compressor B1 Feedback Off On CSB_B1 Curr Sens Brd B1 Status 24 char ASCII CSBB1ASC CSB B1 Feedback Alarm Disable Enable CSB_B1EN config Comp B1 Locked Out No Yes CMPB1LOK Compressor B1 Strikes CMPB1STR ...

Page 221: ...cible Econ Remote 10K Pot Val ECON_POT forcible IAQ PPM Return CO2 IAQ forcible OAQ PPM Return CO2 OAQ forcible IAQ Discrete Input Low High IAQIN forcible IAQ Demand Vent Min Pos IAQMINP config Economizer Min Position ECONOMIN config IAQ Demand Vent Min Flow CFM OACFMMIN config Economizer Min Flow CFM OACFMMAX config Econ Min Flow Deadband CFM OACFM_DB config IAQ Analog Sensor Config IAQANCFG conf...

Page 222: ...DT Trend in degF minute deltaF EDTTREND Economizer Prop Gain EC_PGAIN config Economizer Range Adjust deltaF EC_RANGE config Economizer Speed Adjust EC_SPEED config Economizer Deadband deltaF EC_DBAND config Economizer Timer secs ERATETMR ENTHALPY Outdoor Air Enthalpy OAE Outside Air Temperature degF OAT forcible Outside Air Rel Humidity OARH forcible Outside Air RH Sensor Disable Enable OARHSENS c...

Page 223: ...EXTUNC Last Unoccupied Day 3 char ASCII LLASTUOD Last Unoccupied Time hh mm LLASTUNC MILLIAMP IAQ milliamps milliAmps IAQ_MA OAQ milliamps milliAmps OAQ_MA SP Reset milliamps milliAmps SPRST_MA 4 20 ma Demand Signal milliAmps DMDLMTMA forcible EDT Reset milliamps milliAmps EDTRESMA MARH milliamps milliAmps MARH_MA OARH milliamps milliAmps OARH_MA SPRH milliamps milliAmps SPRH_MA RARH milliamps mil...

Page 224: ...ig Fan Track Max Clamp CFM DCFM_MAX config Fan Track Max Correction CFM DCFM_ADJ config Fan Track Internl EEPROM CFM DCFM_OFF config Fan Track Reset Internal No Yes DCFMRSET Fan Track Internal RAM CFM DCFM_RAM Fan Track Control D CFM CFM DELTACFM PRESDUCT Static Pressure in H2O SP forcible Supply Fan Commanded SFAN_VFD Econ 2 Ret Act Curr Pos ECN2RPOS Econ 2 Ret Cmd Position ECN2CPOS forcible Stat...

Page 225: ...ld Adding Z_PLUS High Temp Cap Override Off On HI_TEMP Low Temp Cap Override Off On LOW_TEMP Pull Down Cap Override Off On PULLDOWN Slow Change Cap Override Off On SLO_CHNG SYSTEM Reset All Current Alarms No Yes ALRESET Reset Alarm History No Yes ALHISCLR Reset the Device No Yes RESETDEV Local Machine Disable No Yes UNITSTOP config Soft Stop Request No Yes SOFTSTOP forcible Emergency Stop Enable E...

Page 226: ...ST_TST Heat Relay 1 Off On HS1_TST Modulating Heat Capacity MGAS_TST Heat Relay 2 Off On HS2_TST Relay 3 W1 Gas Valve 2 Off On HS3_TST Relay 4 W2 Gas Valve 2 Off On HS4_TST Relay 5 W1 Gas Valve 3 Off On HS5_TST Relay 6 W2 Gas Valve 3 Off On HS6_TST Relay 7 W1 Gas Valve 4 Off On HS7_TST Relay 8 W2 Gas Valve 4 Off On HS8_TST Relay 9 W1 Gas Valve 5 Off On HS9_TST Relay 10 W2 Gas Valve 5 Off On HS10_T...

Page 227: ...SCII MARQ_SW NAVIGATOR CESR130227 5 char ASCII NAVI_SW TESTFANS Fan Test Mode Automatic No Yes FANAUTO Econ 1 Out Act Cmd Pos ECONFANS Supply Fan Bypass Relay Off On SFBY_TST Supply Fan Commanded SFVFDTST Power Exhaust Bypass Rly Off On PEBY_TST Exhaust Fan Commanded EFVFDTST MtrMaster A Commanded OAVFDTST MtrMaster B Commanded OBVFDTST Condenser Fan Output 1 Off On CDF1_TST Condenser Fan Output 2...

Page 228: ...5 COMP Compressor Status A1 OFF ON ON ON ON ON ON A2 OFF OFF OFF OFF ON ON ON B1 OFF OFF OFF ON ON ON ON B2 OFF OFF OFF OFF OFF ON ON B3 OFF OFF OFF OFF OFF OFF ON UNIT Total Capacity 075 0 18 23 41 65 82 100 UNIT SIZE N STAGING SEQUENCE WITH DIGITAL COMPRESSOR 75 TON NOMINAL CAPACITY STAGE SEQUENCE 0 1 2 3 4 5 COMP Compressor Status A1 OFF ON ON ON ON ON A2 OFF OFF OFF ON ON ON B1 OFF OFF ON ON O...

Page 229: ...8 to 17 25 to 33 42 to 50 58 to 67 75 to 83 92 to 100 UNIT SIZE R S T STAGING SEQUENCE 120 to 150 TON NOMINAL CAPACITY STAGE SEQUENCE 0 1 1 2 3 4 5 6 7 8 COMP Compressor Status A1 OFF ON ON ON ON ON ON ON ON ON A2 OFF OFF OFF OFF ON ON ON ON ON ON A3 OFF OFF OFF OFF OFF OFF ON ON ON ON A4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON B1 OFF OFF OFF ON ON ON ON ON ON ON B2 OFF OFF OFF OFF OFF ON ON ON ON O...

Page 230: ...CARRIER ASSISTANT section or setting each of the param eters individually After the parameters in Table B have been set the ComfortLink controls configure the additional parameters listed in Tables C and D automatically These parameter configurations are sent to the VFD at every power up The parameters listed in Table C have corresponding ComfortLink configurations Configura tion IAQ S VFD and Con...

Page 231: ...RPM MOTOR NOM POWER 9909 1 0 Pn VFD1NPWR VFD2NPWR Start Stop Dir DIRECTION 1003 FORWARD REQUEST VFD1MDIR VFD2MDIR Accel Decel ACCELER TIME 1 2202 30 0s 30 0s VFD1ACCL VFD2ACCL DECELER TIME 1 2203 30 0s 30 0s VFD1DECL VFD2DECL Motor Control SWITCHING FREQ 2606 4 kHz 8 kHz VFD1SWFQ VFD2SWFQ Table D VFD Parameters Configured with ComfortLink Controls PARAMETER GROUP PARAMETER TITLE PARAMETER INDEX HV...

Page 232: ...le SPEED Not Available VFD1_SPD VFD2_SPD Operating Data SPEED 102 VFD1RPM VFD2RPM OUTPUT FREQ 103 VFD1FREQ VFD2FREQ CURRENT 104 VFD1AMPS VFD2AMPS TORQUE 105 VFD1TORQ VFD2TORQ POWER 106 VFD1PWR VFD2PWR DC BUS VOLTAGE 107 VFD1VDC VFD2VDC OUTPUT VOLTAGE 109 VFD1VOUT VFD2VOUT DRIVE TEMP 110 VFD1TEMP VFD2TEMP RUN TIME R 114 VFD1RUNT VFD2RUNT KWH COUNTER R 115 VFD1KWH VFD2KWH DI1 STATUS 118 VFD1_DI1 VFD...

Page 233: ... PARAMETERS INDIVIDUALLY Initial start up is performed at the factory To start up the VFD with by changing individual parameters perform the following procedure 1 Select MENU SOFT KEY 2 The Main menu will be displayed 2 Use the UP or DOWN keys to highlight PARAMETERS on the display screen and press ENTER SOFT KEY 2 3 Use the UP or DOWN keys to highlight the desired parameter group and press SEL SO...

Page 234: ...Assistant will display the parameters that need to be configured Select the desired values and press SAVE SOFT KEY 2 after every change The process will continue until all the parameters are set The assistant checks to make sure that entered values are in range The assistant is divided into separate tasks The user can activate the tasks one after the other or independently The tasks are typi cally...

Page 235: ...ght TIME FORMAT and press SEL SOFT KEY 2 Use the UP or DOWN keys to change the parameter setting Press OK SOFT KEY 2 to save the configuration and return to the Clock Set menu 6 Use the UP or DOWN keys to highlight SET DATE and press SEL SOFT KEY 2 Use the UP or DOWN keys to change the day month and year Press OK SOFT KEY 2 to save the configuration and return to the Clock Set menu 7 Use the UP or...

Page 236: ...LED not flash ing press RESET from the control panel or turn off the power for 5 minutes Depending on the value of parameter 1604 FAULT RESET SELECT digital input or serial communication could also be used to reset the drive When the fault has been corrected the motor can be started HISTORY For reference the last 3 fault codes are stored into parameters 0401 0412 0413 For the most recent fault ide...

Page 237: ...MUM SPEED parameters Check parameter settings for 2001 and 2002 Check adequacy of motor braking torque Check applicability of torque control Check brake chopper and resistor 25 RESERVED Not used 26 DRIVE ID Internal fault Configuration block drive ID is not valid 27 CONFIG FILE Internal configuration file has an error Contact Carrier 28 SERIAL 1 ERR Field bus communication has timed out Check faul...

Page 238: ...ropriate Check for poor connections and or noise on line 2006 AI1 LOSS Analog input 1 is lost or value is less than the minimum setting Check input source and connections Check the parameter that sets the minimum 3021 and the parameter that sets the Alarm Fault operation 3001 2007 AI2 LOSS Analog input 2 is lost or value is less than the minimum setting Check input source and connections Check par...

Page 239: ...e 2 Remove the front cover 3 Lift the fan out and disconnect the cable 4 Install the fan in reverse order 5 Restore power CONTROL PANEL CLEANING Use a soft damp cloth to clean the control panel Avoid harsh cleaners which could scratch the display window Fig E Main Fan Replacement Frame Sizes R5 and R6 Fig F Internal Enclosure Fan Replacement BATTERY REPLACEMENT A battery is only used in assistant ...

Page 240: ...240 APPENDIX D VFD INFORMATION CONT Fig G VFD Bypass Wiring Diagram WHEN USED ...

Page 241: ...ation DEHU D SEL 1 and the freeze stat switch trips Inputs GEN I FRZ S ALRM HVAC mode Freeze Stat Trip Else If Configured for static pressure control Configuration SP SP CF 1 2 and the static pressure sensor Pressures AIR P SP fails HVAC mode Static Pres Fail OFF Else If Configured for supply fan status monitoring Configuration UNIT SFS M 1 2 and configured to shut the unit down on fan status fail...

Page 242: ...nd dehumidifica tion is in effect HVAC mode Heating Dehum The unit is operating in Heat mode and dehumidifi cation is in effect HVAC mode Vent This is a normal operation mode where no heating or cooling is required and outside air is being delivered to the space to control IAQ levels HVAC mode Low Cool This is a normal cooling mode when a low cooling demand exists HVAC mode High Cool This is a nor...

Page 243: ... s switch to 5 Fig H Address Rotary Switches BACNET DEVICE INSTANCE ADDRESS The UPC Open controller also has a BACnet Device Instance ad dress This Device Instance MUST be unique for the complete BACnet system in which the UPC Open controller is installed The Device Instance is auto generated by default and is derived by adding the MAC address to the end of the Network Number The Network Number of...

Page 244: ...PC Open controller communicates using BACnet on an MS TP network segment communications at 9600 bps 19 2 kbps 38 4 kbps or 76 8 kbps Fig J DIP Switches Wire the controllers on an MS TP network segment in a daisy chain configuration Wire specifications for the cable are 22 AWG American Wire Gage or 24 AWG low capacitance twisted stranded shielded copper wire The maximum length is 2000 ft Install a ...

Page 245: ...demark of Solvay Plastics 2 SmokeGard is a trademark of AlphaGary Mexichem Corp SPECIFICATION RECOMMMENDATION Cable Single twisted pair low capacitance CL2P 22 AWG 7x30 TC foam FEP plenum rated cable Conductor 22 or 24 AWG stranded copper tin plated Insulation Foamed FEP 0 015 in 0 381 mm wall 0 060 in 1 524 mm OD Color Code Black White Twist Lay 2 in 50 8 mm lay on pair 6 twists foot 20 twists me...

Page 246: ...iew6 Handheld BV6H consult Commercial Products i Vu Open Control System Master Prices Fig M BACview6 Device Connection APPENDIX F BACNET COMMUNICATION OPTION CONT Table M Open System Wiring Specifications and Recommended Vendors WIRING SPECIFICATIONS RECOMMENDED VENDORS AND PART NUMBERS Wire Type Description Connect Air International Belden RMCORP Contractors Wire and Cable MS TP Network RS 485 22...

Page 247: ...wer outages Remove the battery from the controller making note of the bat tery s polarity Insert the new battery matching the battery s po larity with the polarity indicated on the UPC Open controller IMPORTANT Power must be ON to the UPC Open when replacing the battery or the date time and trend data will be lost Table N LED Status Indicators LED STATUS Power Lights when power is being supplied t...

Page 248: ...ure CALM Circuit B High Pressure Switch Failure CALM Circuit B Loss of Charge CALM Compressor A1 Relay CBP CMPA1 R 0 to 1 BV 16 cmpa1_1 Compressor A2 Relay CBP CMPA2 R 0 to 1 BV 17 cmpa2_1 Compressor A3 Relay CBP CMPA3 R 0 to 1 BV 13 cmpa3_1 Compressor A4 Relay CBP Compressor B1 Relay CBP CMPB1 R 0 to 1 BV 18 cmpb1_1 Compressor B2 Relay CBP CMPB2 R 0 to 1 BV 19 cmpb2_1 Compressor B3 Relay CBP CMPB...

Page 249: ...kage Max Damper Position BAV LINK_MAX_DMPR R W AV 2611 link_max_dmpr_1 Local Machine Disable CBP UNITSTOP W 0 to 1 BV 59 unitstop_1 Local Schedule BBV SCHEDULE R BV 5 schedule_1 Maximum Damper Position BAV Maximum Reset BAV Minimum Damper Position BAV Mixed Air Temperature CAP MAT R dF AV 1500 ma_temp_1 OAQ PPM Outdoor CO2 CAP OAQ R W 0 to 5000 AV 113 oaq_1 Occupied Cool Mode End CAP OCCL_END R F ...

Page 250: ...to 100 AV 2050 sf_vfd_output_1 System Cooling Demand Level BAV R AV 9006 cool_demand_level_1 System Demand Limiting BBV R BV 7 dem_lmt_act_1 System Heating Demand Level BAV R AV 9036 heat_demand_level_1 System OAT Master BAV R dF AV 80001 mstr_oa_temp_1 System Space AQ BAV System Space RH BAV System Space Temperature BAV Temper Supply Air Setpt CAP SASPTEMP R W F 35 to 70 AV 15 sasptemp_1 Temperin...

Page 251: ...q_1 VFD1 Actual Motor Power CAP VFD1PWR R kW AV 81 vfd1pwr_1 VFD1 Actual Motor RPM CAP VFD1RPM R 0 to 30000 AV 82 vfd1rpm_1 VFD2 Actual Motor Freq CAP VFD2FREQ R 10 to 500 AV 93 vfd2freq_1 VFD2 Actual Motor Power CAP VFD2PWR R AV 94 vfd2pwr_1 VFD2 Actual Motor RPM CAP VFD2RPM R AV 95 vfd2rpm_1 ZS CO2 Sensor Valid Status BBV ZS Humidity Sensor Valid Status BBV ZS Temp Sensor Valid Status BBV ZS The...

Page 252: ...voltage is present When the system calls for cool ing the Motormaster relay MMR will be energized to initiate the start up sequence for the Motormaster V electronic control The LED light emitting diode will display the speed of the mo tor The display range will be 8 to 60 Hz The Motormaster V electronic control will start the condenser fan when the compres sor engages The ComfortLink controls will...

Page 253: ... and then storing the value by pressing MODE 5 Press MODE again to re display the value of P48 6 Change the value of P48 to the desired factory default mode see Table Q using UP and DOWN buttons then press MODE The Motormaster V control is now restored to factory settings TROUBLESHOOTING Troubleshooting the Motormaster V control requires a combina tion of observing system operation and VFD display...

Page 254: ...eq 60 or 50 Hz 60 60 50 P28 Fixed boost 0 5 at low frequencies 0 5 0 5 0 5 P29 Accel boost 0 0 0 0 P30 Slip compensation 0 0 0 0 P31 Preset spd 1 speed if loss of control signal 57 57 47 P32 Preset spd 2 0 0 0 0 P33 Preset spd 3 0 0 0 0 P34 Preset spd 4 default R22 and R410A setpoints TB12 2 open 24 0 24 0 24 0 P35 Preset spd 5 default R134a setpoint TB12 2 closed 12 6 12 6 12 6 P36 Preset spd 6 d...

Page 255: ...EPM or an EPM with corrupted data has been installed Perform a factory reset using Parameter 48 PROGRAM SELECTION See Drive Programming section cF Incompatibility Fault Manual An EPM with an incompatible parameter version has been installed Either remove the EPM or perform a factory reset Parameter 48 to change the parameter version of the EPM to match the parameter version of the drive F1 EPM Fau...

Page 256: ...e selection process 61 Heating 34 Heating control 60 Hot gas bypass 100 Humidification 88 Humidi MiZer system 33 90 Humidi MiZer troubleshooting 103 HVAC modes 39 Hydronic heating control 62 Independent outputs 29 Indoor air quality control 84 Indoor air quality configurations 28 Internal wiring 7 Liquid line service valve 185 Local display tables 256 Lubrication 171 Major system components 134 Mo...

Page 257: ...______________________________________________________ Verify that all packing materials have been removed from unit Verify installation of economizer hoods per installation instructions Verify installation of condensate drains and traps per installation instructions Verify watertight interface between unit and curb roof mounted units Verify removal of supply fan shipping brackets per installation...

Page 258: ... installation of supply air thermistors per installation instructions units with modulating gas SCR electric or hydronic heat only Verify that return air filters and outdoor air filters are in place and clean Verify that unit is level within specified installation tolerances Verify that fan wheels and propellers are properly positioned in the fan housing orifice and that all fan set screws are tig...

Page 259: ...t Bulb WB Supply Voltage L1 L2 ______________ L2 L3 _______________ L3 L1 ___________ Check Voltage Imbalance Average Voltage L1 L2 L2 L3 L3 Ll 3 Maximum Deviation from Average Voltage _______________ Voltage Imbalance _______________ max deviation average voltage x 100 Voltage imbalance less than 2 Yes No Do not start unit if voltage imbalance is greater than 2 Contact local utility for assistanc...

Page 260: ...on under the COOL sub menu any attempt to turn on heating stages within the HEAT sub menu would immediately turn off the compressors and 5 seconds later the controller would honor the requested heat stages However it is important to note that the user can leave a Service Test mode to view any of the local display menus Run Status Temperatures Pressures Setpoints Inputs Outputs Configuration Time C...

Page 261: ...e SP O S Space Temp Offset Sensor Disable Enable Disable SP O R Space Temp Offset Range 1 to 10 5 SRH S Space Air RH Sensor Disable Enable Disable RRH S Return Air RH Sensor Disable Enable Disable MRH S Mixed Air RH Sensor Disable Enable Disable FACT FACTORY CONFIGURATION MD MN Model Number F RST Perform Factory Restore 0 to 1 0 COOL COOLING CONFIGURATION A1 EN Enable Compressor A1 Disable Enable ...

Page 262: ... PID Prop Gain 0 to 5 0 15 75 105T 0 5 120 150T EX TI EXV Integration Time 0 5 to 60 24 75 105T 50 120 150T EX HO High OAT Lim EXV Gain 50 to 95 55 75 105T 70 120 150T EX LO Low OAT Lim EXV Gain 40 to 80 54 75 105T 60 120 150T EX FG EXV Move on Cir Stg Up 0 to 100 15 0 75 105T 10 120 150T EX FD EXV Move on Cir Stg Dw 0 to 100 15 0 EX CF EXV Pre Move Config 0 to 3 sec 1 EX PM EXV Pre Move Delay Sec...

Page 263: ...ess Low Range 10 to 0 in wg 0 SP HI Static Press High Range 0 to 10 in wg 5 SP SP Static Pressure Setpoint 0 to 5 in wg 1 5 SP MN VFD Minimum Speed 0 to 100 20 SP MX VFD Maximum Speed 0 to 100 100 SP FS VFD Fire Speed Override 0 to 100 100 SP RS Stat Pres Reset Config 0 to 4 0 SP RT SP Reset Ratio 0 to 2 in wg 0 2 SP LM SP Reset Limit 0 to 2 in wg 0 75 SP EC SP Reset Econo Position 0 to 100 5 S PI...

Page 264: ...con Fault Detect Timer 10 240 20 X CFM Excess Air CFM 400 4000 800 X TMR Excess Air Detect Timer 30 240 150 AC MR T24 AutoTest SF Run Time 1 10 2 AC SP T24 Auto Test VFD Speed 10 50 20 AC OP T24 Auto Test Econ Opn 1 100 30 VF PC T24 Auto Test VFD Chng 1 20 10 EC DY T24 Econ Auto Test Day 0 Never 1 Monday 2 Tuesday 3 Wednesday 4 Thursday 5 Friday 6 Saturday 7 Sunday 6 Saturday EC TM T24 Econ Auto T...

Page 265: ...0 to 100 100 IQ O C IAQ Override Flow 0 to 31000 cfm 10000 DAQ L Diff Air Quality LoLimit 0 to 1000 100 DAQ H Diff Air Quality HiLimit 100 to 2000 700 D F OF DAQ PPM Fan Off Setpoint 0 to 2000 200 D F OM DAQ PPM Fan On Setpoint 0 to 2000 400 IAQ R Diff AQ Responsiveness 5 to 5 0 OAQ L OAQ Lockout Value 0 to 2000 0 OAQ U User determined OAQ 0 to 5000 400 AQ SR AIR QUALITY SENSOR RANGE IQ R L IAQ Lo...

Page 266: ...limit unocc 40 to 245 dF 40 RA H U RAT hi alert limit unocc 40 to 245 dF 100 OAT L OAT low alert limit 40 to 245 dF 40 OAT H OAT high alert limit 40 to 245 dF 150 R RH L RARH low alert limit 0 to 100 0 R RH H RARH high alert limit 0 to 100 100 O RH L OARH low alert limit 0 to 100 0 O RH H OARH high alert limit 0 to 100 100 SP L SP low alert limit 0 5 to 5 H2O 0 SP H SP high alert limit 0 to 5 H2O ...

Page 267: ...Motor Direction 0 to 1 multi text strings 0 ACCL VFD2 Acceleration Time 0 to 1800 sec 30 DECL VFD2 Deceleration Time 0 to 1800 sec 30 SW FQ VFD2 Switching Frequency 0 to 3 multi text strings 2 FLTC FILTER CONFIGURATION FS FT Filter Stat Fault Timer 0 to 10 minutes 2 F NOT Filter Notification Cut 20 to 50 25 F ALT Filter Alert Cutoff 0 to 20 10 MFL S Main Filter Status Cfg 0 to 5 0 MF TY Main Filte...

Page 268: ... or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480165 01 Printed in U S A Form 48 50N 7T Pg CL 12 12 2020 Replaces 48 50N 6T 2020 Carrier CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE ...

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Carrier WeatherExpert 48N2, Controls, Start-Up, Operation, Service, And Troubleshooting

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