Carrier WEATHERMAKER 48A2 Started Manual Download

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Summary of Contents for WEATHERMAKER 48A2

Page 1: ... OPERATION 32 75 Modes 32 SYSTEM MODES HVAC MODES Page Unit Configuration Submenu 35 Cooling Control 37 SETTING UP THE SYSTEM MACHINE DEPENDENT CONFIGURATIONS SET POINTS SUPPLY AIR RESET CONFIGURATION COOLING CONFIGURATION COMPRESSOR SAFETIES COMPRESSOR TIME GUARDS COOL MODE SELECTION PROCESS COOLING MODE DIAGNOSTIC HELP SUMZ COOLING ALGORITHM DEMAND LIMIT CONTROL HEAD PRESSURE CONTROL ECONOMIZER ...

Page 2: ...equipment Untrained personnel can perform the basic maintenance functions of re placing filters Trained service personnel should perform all other operations When working on air conditioning equipment observe pre cautions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes Wear safety glasses and work gloves Use quenching cloth...

Page 3: ...tiple power exhaust fans controlled from econo mizer damper position or from a building pressure sensor The control safeties are continuously monitored to ensure safe oper ation under all conditions Sensors include suction pressure transducers discharge pressure transducers and saturated con densing temperature sensors which allow for display of opera tional pressures and saturation temperatures A...

Page 4: ...cers the scrolling marquee can also display refrigerant circuit pressures typically obtained from service gages The control also includes an alarm history which can be accessed from the display In addition through the scrolling O Alarms _ Fig 1 Scrolling Marquee Fig 2 Accessory Navigator Display marquee the user can access a built in test routine that can be used at start up colrunissioning to dia...

Page 5: ... device to change set points A security feature is provided to limit access of features for unauthorized users See Fig 3 for System Pilot details CCN Tables and Display E In addition to the unit mounted scrolling marquee display the user can also access the same inforlnation through the CCN tables by using the Service tool or other CCN programs Details on the CCN tables are SUlnmarized in Appendix...

Page 6: ...rge SASP TPRG 4 Tempering in Cool SASP TCL 4 Tempering in Vent Occ SASP TV OC 4 Tempering in Vent Unocc SASP T V UN INPUTS OUTPUTS CONFIGURATION General Inputs Fans Unit GEM I FANS Configuration 4 4 UNIT 4 Compressor Cooling Feedback COOL Cooling FD BK 4 Configuration 4 COOL Heating 4 Thermostat HEAT Inputs 4 Evap Discharge STAT Temp Reset 4 Economizer EDT R ECON 4 Fire Smoke 4 Modes Heating FIRE ...

Page 7: ...s for the controls IMPORTANT The unit is shipped with the unit control disabled To enable the control set Local Machine Disable I Service Test gSTOP to No 1 Set any control configurations that are required field installed accessories etc The unit is factory configured for all appropriate factory installed options 2 Enter unit set points The unit is shipped with the set point default values If a di...

Page 8: ... 77 1154 13 15 1178 13 54 Table 4 Fan Performance 48AJ AK027 030 and 48A2 A3025 030 Units AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 331 0 63 408 0 85 474 1 08 531 1 31 581 1 55 627 1 79 670 2 03 709 2 28 746 2 52 781 2 77 374 0 98 443 1 20 503 1 45 558 1 70 607 1 96 653 2 23 695 2...

Page 9: ...00 Rpm 5O8 55O 595 642 689 738 788 838 888 94O 991 1017 Bhp 2 52 3 30 4 24 5 34 6 62 8 09 9 76 11 64 13 74 16 06 18 62 20 00 Rpm 557 596 637 68O 725 771 818 867 915 965 1015 1040 Bhp 2 90 3 71 4 67 5 80 7 11 8 60 10 29 12 19 14 31 16 66 19 23 20 61 Rpm 6O5 639 677 717 759 8O3 848 895 942 99O 1039 1064 Bhp 3 29 4 12 5 11 6 26 7 59 9 11 10 83 12 74 14 88 17 24 19 86 21 24 1 0 Rpm 650 680 715 752 792...

Page 10: ...41 Units AIRFLOW AVAILABLE EXTERNAL STATIC PRESSURE in wg Cfm 0 2 0 4 0 6 0 8 Rpm 5O2 552 6O2 653 7O4 756 808 861 914 967 1020 1073 1127 Bhp 2 90 3 81 4 89 6 15 7 60 9 24 11 10 13 18 15 49 18 03 20 82 23 87 27 18 8 000 9 000 10 000 11 000 12 000 13 000 14 000 15 000 16 000 17 000 18 000 19 000 20 000 Rpm 55O 595 642 689 738 788 838 888 94O 991 1043 1095 1147 Bhp 3 30 4 24 5 34 6 62 8 09 9 76 11 64...

Page 11: ... 71 12 21 13 84 15 60 17 49 19 53 21 71 24 04 26 62 538 4 25 585 5 78 610 6 70 636 7 74 662 8 90 689 10 17 717 11 68 745 13 11 773 14 77 802 16 57 831 18 51 861 20 59 890 22 81 920 25 19 951 27 72 587 632 655 680 704 730 756 783 810 838 866 894 923 952 982 0 8 Bhp 5 00 6 56 7 50 8 56 9 73 11 02 12 45 14 00 15 69 17 52 19 49 21 60 23 87 26 28 28 84 1 0 Bpm 632 674 697 72o 744 766 793 819 845 872 89...

Page 12: ...097 28 95 1123 30 08 1147 31 22 1172 32 39 1195 33 56 1122 31 33 1147 32 47 1171 33 63 1195 34 80 1146 33 87 1171 35 02 1195 36 19 1171 36 58 1196 37 74 1197 39 46 Table 12 Fan Performance 50AJ AK020 025 and 50A2 A3020 Units AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 311 0 54 390 0...

Page 13: ... 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 503 1 96 553 2 22 601 2 47 646 2 72 689 2 97 730 3 22 768 3 46 804 3 70 839 3 94 872 4 17 553 2 62 599 2 89 643 3 16 684 3 43 724 3 70 763 3 97 799 4 23 834 4 50 868 4 76 901 5 02 605 3 39 647 3 68 687 3 97 726 4 26 763 4 55 798 4 83 833 5 12 867 5 40 899 5 68 930 5 96 657 4 29 69...

Page 14: ...le 16 Fan Performance 50AJ AK A2 A3040 Units AVAILABLE EXTERNAL STATIC PRESSURE in wg AIRFLOW 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Cfm 8 000 9 000 10 000 11 000 12 000 13 000 14 000 15 000 16 000 17 000 18 000 19 000 20 000 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 475 2 69 523 3 08 569 3 47 612 3 86 653 4 26 692 4 66 730 5 07 767 5 49 802 5 92 836 6 36 521...

Page 15: ...95 1140 2 0 Rpm 836 857 862 909 939 972 1006 1042 1079 1118 1157 1198 3 0 Rpm 993 1008 1026 1047 1071 1098 1126 1157 1190 1224 1260 4 0 Rpm 1129 1142 1157 1173 1192 1214 1239 1265 1294 Bhp 4 26 5 20 6 29 7 55 8 97 10 57 12 36 14 35 16 55 18 96 21 60 24 47 27 58 Bhp 6 36 7 39 8 58 9 94 11 48 13 19 15 09 17 18 19 48 21 99 24 72 27 68 Bhp 8 67 9 75 11 00 12 44 14 05 15 86 17 86 20 06 22 46 25 07 27 9...

Page 16: ...73 1193 Bhp 16 36 18 24 19 32 20 51 21 81 23 22 24 76 26 43 28 24 30 17 32 25 Rpm 1027 1057 1072 1088 1105 1122 1140 1158 1176 1195 0 8 1 0 Bhp 4 63 6 12 7 01 8 01 9 11 10 32 11 64 13 07 14 64 16 32 18 14 20 09 22 17 24 40 26 78 Bhp 8 40 10 04 11 01 12 09 13 28 14 59 16 02 17 57 19 24 21 04 22 98 25 05 27 25 29 60 32 09 Bhp 12 68 14 45 15 48 16 62 17 87 19 25 20 74 22 36 24 11 26 00 28 02 30 18 32...

Page 17: ...0 11 000 12 000 13 000 14 000 15 000 Table 22 Fan Performance 48AW AY027 030 and 48A4 A5025 030 Units AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 342 0 72 417 0 98 480 1 26 536 1 55 587 1 85 633 2 15 676 2 45 715 2 76 753 3 07 788 3 38 389 1 11 456 1 38 514 1 68 566 1 98 614 2 30 65...

Page 18: ...0 12 000 13 000 14 000 15 000 16 000 17 000 17 500 Rpm 475 526 579 633 687 742 797 852 908 964 1021 1049 Bhp 2 29 3 10 4 08 5 24 6 59 8 15 9 92 11 92 14 15 16 63 19 37 20 84 Rpm 527 573 621 671 723 775 827 881 935 989 1044 1072 Bhp 2 66 3 50 4 51 5 70 7 07 8 65 10 45 12 47 14 72 17 23 19 98 21 46 Rpm 576 617 662 7O9 757 8O7 857 9O9 961 1014 1068 1095 Bhp 3 05 3 91 4 95 6 16 7 56 9 17 10 98 13 03 1...

Page 19: ... 000 887 12 000 742 13 000 797 14 000 852 15 000 908 16 000 964 17 000 1021 18 000 1077 19 000 1133 20 000 1190 AIRFLOW Cfm Rpm 8 000 740 9 000 775 10 000 813 11 000 854 12 000 898 13 000 943 14 000 990 15 000 1038 16 000 1086 17 000 1136 18 000 1187 19 000 1238 20 000 AIRFLOW Cfm Rpm 8 000 917 9 000 942 10 000 971 11 000 1003 12 000 1038 13 000 1075 14 000 1115 15 000 1157 16 000 1200 17 000 1245...

Page 20: ...25 76O 796 832 869 905 942 976 Bhp 3 19 4 81 5 80 6 90 8 13 9 49 10 99 12 64 14 43 16 37 18 47 20 74 23 17 25 76 28 56 Rpm 5O9 569 600 632 664 697 730 764 798 833 867 902 937 973 1008 Bhp 3 86 5 54 6 56 7 69 8 96 10 36 11 90 18 56 15 41 17 39 19 54 21 84 24 31 26 95 29 77 Rpm 561 617 646 676 706 737 769 801 834 867 901 934 968 1003 1037 Bhp Rpm 4 58 608 6 30 660 7 34 688 8 50 716 9 79 745 11 22 77...

Page 21: ...its AIRFLOW CFM 4 000 5 000 6 000 7 000 7 500 8 000 9 000 10 000 11 000 12 000 12 500 13 000 AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 322 0 62 399 0 82 464 1 04 521 1 26 572 1 48 619 1 71 662 1 93 702 2 16 739 2 38 774 2 61 361 0 95 431 1 17 491 1 41 545 1 65 594 1 89 640 2 14 68...

Page 22: ... 0 4 Rpm Bhp Rpm Bhp 522 2 06 573 2 32 576 2 75 622 3 03 630 3 57 672 3 86 686 4 52 724 4 84 714 5 05 750 5 38 742 5 62 777 5 95 799 6 88 831 7 22 856 8 29 886 8 65 914 9 87 942 10 24 971 11 62 998 12 00 1029 13 55 1054 13 94 1088 15 66 1111 16 07 1117 16 79 1140 17 20 AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp R...

Page 23: ...39 12 60 13 99 15 56 17 35 19 35 21 56 Table 34 Fan Performance 50AW AY A4 A5040 Units AIRFLOW Cfm 8 000 9 000 10 000 11 000 12 000 13 000 14 000 15 000 16 000 17 000 18 000 19 000 20 000 AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 499 2 88 546 327 590 3 66 632 4 06 672 446 711 4 87...

Page 24: ...le 36 Fan Performance 50AW AY A4 A5050 Units AIRFLOW Cfm 8 000 9 000 10 000 11 000 12 000 13 000 14 000 15 000 16 000 17 000 18 000 19 000 20 000 AVAILABLE EXTERNAL STATIC PRESSURE in wg 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 Rpm Bhp Bpm Bhp Rpm Bhp Bpm Bhp Rpm Bhp Rpm Bhp Bpm Bhp Rpm Bhp Bpm Bhp Rpm Bhp 509 2 95 555 3 35 599 3 74 640 4 14 680 4 54 718 4 95 755 5 36 791 5 79 826 6 22 859 6 66 558...

Page 25: ...147 1169 1190 Bhp 16 83 18 90 20 10 21 41 22 85 24 43 26 14 28 00 30 00 Rpm 1038 1072 1090 1109 1128 1148 1169 1190 Bhp 4 95 6 61 7 61 8 72 9 94 11 30 12 78 14 39 16 14 18 04 20 08 22 28 24 63 27 14 29 82 Bhp 8 78 10 60 11 68 12 88 14 21 15 66 17 25 18 98 20 84 22 85 25 01 27 32 29 79 32 42 35 21 Bhp 13 11 15 06 16 20 17 47 18 87 20 39 22 06 23 86 25 81 27 91 30 16 32 57 35 13 Rpm 627 673 698 723 ...

Page 26: ...1 7 91 7 93 0 93 0 93 6 93 6 93 6 93 6 93 6 94 5 Bhp BkW NOTES 1 Extensive motor and electrical testing on the Carrier units has ensured that the full horsepower range of the motor can be utilized with confidence Using the fan motors up to the horsepower ratings shown in the Motor Lim itations table will not result in nuisance tripping or premature motor fail ures Unit warranty will not be affecte...

Page 27: ... jumpers from R W2 and W2 W1 on TB4 in the control box 3 See Economizer Options section on page 28 for addition al economizer option configurations 4 See Exhaust Options section on page 29 for additional exhaust option configurations Two Stage Constant Volume Units with Space Sensor E To configure the unit perform the following 1 The type of control is configured under bnfiguration UNIT C TYP Set ...

Page 28: ...ints menu set the following configurations 4 SA HI Supply Air Set Point Hi SA LO Supply Air Set Point Lo See the Economizer Options section on this page for ad ditional economizer option configurations 5 See the Exhaust Options section on page 29 for additional exhaust option configurations Multi Stage Constant Volume Units with Space Sensor E To configure the unit perform the following 1 Under Co...

Page 29: ... desired minutes value Press ESCAPE 4 Configure the unoccupied time for period 1 UNO Scroll down to UNC and press ENTER to go into Edit mode The first two digits of the 00 00 will start flashing Use the UP or DOVv2 Ikey to display the correct value for hours in 24 hour military time Press ENTER and hour value is saved and the minutes digits will start flashing Use the same procedure to display and...

Page 30: ...located in the unit control box Remember to disconnect these jumpers when Test Mode is completed The Heat Test Mode sub mode will offer automatic fan start up if the unit is not a gas heat unit On gas heat units the IGC feed back from the gas control units will bring the fan on as required Within this sub mode the user has control of heat relays 1 to 6 The user can also turn on the requested heat ...

Page 31: ...t that can reduce or limit capacity linearly to a set point percentage In either case it will be necessary to install a controls ex pansion module CEM DEMAND LIMIT DISCRETE INPUTS First set DM L S in bnfiguration DMD L to 1 2 switches When Inputs cGEN I cDL S1 Demand Switch no 1 is OFF the control will not set any limit to the capacity and when ON the control sets a capacity limit to the Configura...

Page 32: ... came on the economizer will go to the economizer minhnum position EC MN The 4 to 20 mA signal from the sensor wired to TB5 6 and 7 is scaled to an equivalent indoor CO 2 IAQ by the parame ters IQ R L and IQ R H located under the bnfiguration IAQ AQ S R menu The parameters are defined such that 4 mA IQ R L and 20 mA IQ R H When the differential air quality DAQ IAQ OAQ U exceeds the DAQ H set point...

Page 33: ...t the con trol is lhnited to the Test mode and is controllable via the local displays scrolling marquee and Navigator TM display or through the factory service test control The System Test modes are Factory Test Enabled and Service Test Enabled See the Service Test Mode section for details on test control in this mode 1 Factory Test mode Factory test enabled 2 Service Test mode Service test enable...

Page 34: ...tjust waking u p_No_Hn _h t inr_ rlown_ o o_ _ _ 4 from p t _ _s _ Ves _ _ A _ HVAC Mode OFF HVAC Mode OFF HVAC Mode OFF HVAC Mode Shu ng ___ Static Pres Fail _ _ Fan Status Fail _ _ Starting Up _ _ Down _ Unit control free to select normal heating cooling HVAC mode Unit control free to choose HVAC Mode HVAC Mode OFF J ll_ HVAC Mode Vent HVAC Mode _I Tempering Vent HVAC Mode Low Cool f HVAC Mode _...

Page 35: ...mperature will be used in the determination of the selection of a cooling mode VAV SPT differs from VAV RAT only in that during the unoccupied period space temperature will be used instead of return air temperature to start the fan for 10 minutes to establish an accurate return air temperature before the return air temper amre is allowed to call out any mode C TYP 3 TSTAT MULTI This configuration ...

Page 36: ...ion specifies the type of refrigerant used in the unit Configuration RFG T is set to 0 if the refrigerant used is R 22 Configuration RFG T is set to 1 if the refrigerant used is R 410A Do not change this setting Condenser Type CND 3 This configuration specifies the type of condenser installed in the unit Configuration CND T is set to 0 if the condenser is a round tube plate fin coil RTPF Configura...

Page 37: ...y as well as low load coil freeze protection The con trol also integrates the use of an economizer with the use of mechanical cooling to allow for the greatest use of flee cool ing When both mechanical cooling and the economizer are being used the control will use the economizer to provide bet ter temperature control and limit the cycling of the compres sors The control also checks on various othe...

Page 38: ...is configuration specifies the type of refrigerant used in the unit Configuration RFG T is set to 0 if the refrigerant used is R 22 Configuration RFG T is set to 1 if the refrigerant used is R 410A Make sure this configu ration matches the refrigerant called out by the model number of the unit Condenser Type _WD T This configuration specifies the type of condenser installed in the unit Configurati...

Page 39: ...ressure control Enable Compressor A1 A1 EN This configuration is used to disable the A1 compressor in case of failure Enable Compressor A2 A2 EN This configuration is used to disable the A2 compressor in case of failure Enable Compressor B1 B1 EN This configuration is used to disable the B 1 compressor in case of failure Enable Compressor B2 B2 EN This configuration is used to disable the B2 compr...

Page 40: ... will use a Compressor Minimum OFF Thne of 2 minutes a Compressor Minhnum ON Thne of 3 minutes and a Minhnum Delay before turning on another compressor of 10 seconds COOL MODE SELECTION PROCESS The A Series _nfortLink TM controls offer three distinct methods by which it may select a cooling mode 1 Thermostat 4 TYP 3 and 4 The thermostat does not depend upon the state of occupancy and the modes are...

Page 41: ...DE MODES CONTROLLING UNIT OCC Currently Occupied ON OFF I MODEOCCP T C ST Temp Compensated Start ON OFF MODETCST _ol Mode Evaluation Logic The first thing the control determines is whether the unit is in the occupied mode O4_ or is in the temperature compensated start mode T CST If the unit is occupied or in temperature compensated start mode the occupied cooling set point OCSP is used For all oth...

Page 42: ...ll energize one compressor in Cir cuit A an HVAC Mode of HIGH COOL will energize all three compressors On unit sizes 030 and larger with four compressors an HVAC Mode of LOW COOL will energize both compressors in Circuit A an HVAC Mode of HIGH COOL will energize all four compressors Refer to the sec tion on Economizer Integration with Mechanical Cooling for more information 2 Stage Cooling Control...

Page 43: ...pplied B2 depending on whether High Cool or Low Cool mode is in ef UNIT fect respectively 030 If one stage of mechanical cooling is on and the economiz 035 036 er is active then the economizer will attempt to control to 53 E 040 041 Also If HVAC mode LOW COOL the second stage of 050 mechanical cooling will be locked out 051 060 If the set point cannot be satisfied or the economizer is not active t...

Page 44: ...ypass 48 50AK AY030 060 ON OFF OFF OFF 0 12 0 12 0 13 0 16 0 19 0 19 With minimum load valve ON STAGE Y1 Y2 COMP A1 A2 B1 UNIT 020 025 027 SEQUENCE 1 I 2 I 3 I 4 I 5 I 6 Compressor Status ON ON OFF ON ON OFF ON ON ON ON OFF OFF ON ON ON OFF OFF OFF OFF ON Unit Capacity 48 50A 23 45 50 73 100 22 48 52 74 100 21 43 50 71 100 23 46 46 68 100 25 50 50 75 100 24 50 50 74 100 SEQUENCE 2 o I1 12 13 14 15...

Page 45: ...nce Without Hot Gas Bypass 48 50A3 A5030 060 and Multi Stage 48 50A2 A4030 060 ON OFF OFF OFF 25 20 25 25 25 SEQUENCE 1 I 2 I a Compressor Status ON ON OFF ON ON ON OFF OFF Unit Capacity 48 50A 50 75 50 80 50 75 50 75 50 75 ON ON ON ON 100 100 100 100 100 OFF OFF OFF OFF 0 0 0 0 0 I 1 OFF ON OFF OFF 25 20 25 25 25 SEQUENCE 2 I 2 I 3 Compressor Status ON OFF OFF ON ON ON OFF ON Unit Capacity 48 50A...

Page 46: ...adding or subtracting a cooling stage during mn time It is a normalized representation of the relationship between Sum and Z Next Stage EDT Decrease ADD R This variable repre sents if adding a stage of cooling how much the temperature should drop in degrees depending on the R PCT calculation and exactly how much additional capacity is to be added ADD R R PCT C CAP capacity after adding a cooling s...

Page 47: ...en 20 and 20 This SUM will be compared against the Z calculations in determining whether cooling stages should be added or subtracted Z Calculation For the Z calculation the control attempts to determine the entering and the leaving air temperature of the evaporator coil and based upon the difference between the two during mechanical cooling and then determines whether to add or subtract a stage o...

Page 48: ...s Two discrete inputs tied to configurable demand limit set point percentages An external 4 to 20 mA input that can reset capacity back linearly to a set point percentage CCN loadshed functionality NOTE It is also possible to force the demand limit variable Run Status DOL DEM L To use Demand Lhniting select the type of demand limiting to use This is done with the Demand Lhnit Select configura tion...

Page 49: ...ondenser heat exchangers are the only units that utilize independent fan controls If the unit is equipped with the accessory Motormaster V control the Motormaster installed configuration bnfiguration cCOOL _M M must be set to YES if the unit size bnfiguration Unit cSize is 60 tons and the con denser heat exchanger type bnfiguration cUnit cCND 1 is RTPF round robe plate fin This is because the cond...

Page 50: ...the first fan stage is turned on ilrnnediately The second fan stage will turn on when OAT rises above 75 F or the highest ac tive circuit SCT rises above the HPSP and remain on until the condition is repaired regardless of the OAT and SCT values ECONOMIZER INTEGRATION WITH MECHANICAL COOLING When the economizer is able to provide free cooling Run Status cECON cACTV YES mechanical cooling may be de...

Page 51: ...ay Gas Heat GFOD This configuration is the delay in seconds after a gas heat mode has ended HT CF 2 3 that the control will continue to energize the supply fan Fan Off Delay Elec Heat E FOD This configuration is the delay in seconds after an electric heat mode has ended HT CF I that the control will continue to energize the supply fan HEAT MODE SELECTION PROCESS There are two possible heat modes t...

Page 52: ...inus L H ONplus L H OF 2 The Run Status table in the local display allows the user to see the exact trip points for both the heating and cooling modes without doing the calculations Heat Trend Demand Level tt T LV This is the change in demand that must be seen within the time period specified by H r rMin order to hold off a HIGH HEAT mode regardless of demand This is not applicable to VAV control ...

Page 53: ... is the temperature limit above which stages of heat will be removed Limit Switch Low Temp SW L T This configuration is the temperature limit above which no additional stages of heat will be allowed Heat Control Prop Gain HT P This configuration is the proportional term for the PID which runs in the HVAC mode LOW HEAT Heat Control Defy Gain HT D This configuration is the derivative term for the PI...

Page 54: ...chosen set of staging patterns See Tables 70 73 INTEGRATED GAS CONTROL BOARD LOGIC All gas heat units are equipped with one or more integrated gas control IGC boards This board provides control for the ignition sys tem for the gas heat sections On size 020 050 low heat units there will be one IGC board On size 020 050 high heat units and 051 and 060 low heat units there are two IGC boards On size ...

Page 55: ...onfiguration_HEAT_ SG CT_HT ST 2 RELAY OUTPUT Heat 1 Heat 2 Heat 3 Heat 4 Heat 5 Heat 6 CAPACITY STAGE MBB RLY8 MBB RLY7 SCB RLY1 SCB RLY2 SCB RLY3 SCB RLY4 IGC1 MGV1 IGC2 MGV2 IGC3 MGV3 0 OFF OFF OFF OFF OFF OFF 0 1 ON OFF OFF OFF OFF OFF 25 2 ON ON OFF OFF OFF OFF 33 3 OFF OFF ON OFF OFF OFF 50 4 OFF OFF ON ON OFF OFF 67 5 ON OFF ON OFF OFF OFF 75 6 ON ON ON OFF OFF OFF 83 7 ON ON ON ON OFF OFF ...

Page 56: ...Sensor The factory sensor is attached to one of the supply fan housings Disconnect the sen sor from the factory harness Drill a hole insert the sensor through the duct wall and secure in place Attach the new conductor cable to the sensor leads and ter minate in an appropriate junction box Connect the opposite end inside the unit control box at the factory leads from MBB J8 terminals 11 and 12 PNK ...

Page 57: ...re config ured a PID routine periodically measures the duct static pressure and calculates the error from set point This error is simply the duct static pressure set point minus the measured duct static pressure The error becomes the basis for the propor tional term of the PID The routine also calculates the integral of the error over trine and the derivative rate of change of the error A value is...

Page 58: ...override Note that SRCF must be set to 1 VFD Control prior to configuring SRRS 4 Failure to do so could result in damage to ductwork due to overpressurization This is the recolmnended approach if a third party wishes to control the variable speed supply fan In effect this represents a speed control signal pass through under normal operating circumstances The _l_fortLink con trol system ovemdes the...

Page 59: ...itions For example a system design requirement nay be 1 2 in wg the equipment nay be capable of providing 3 0 in wg and the supply duct is designed for 5 0 in wg In this case the installer could enter 3 0 in wg as the supply static pressure set point and allow the air terminal system to dynami cally adjust the supply duct static pressure set point as required The system will deter nine the actual ...

Page 60: ... _UNIT Filter Enable FLTS ENA _SENS _FLT S Stat Sw Enabled Disable Inputs _GEN I Filter Status Input DRTY CLN FLTS FLT S Monitoring of the filter stares switch is disabled in the Service Test mode and when the supply fan is not colmnanded on If the fan is on and the unit is not in a test mode and the filter status switch reads dirty for 2 continuous minutes an alert is generated Recovery from this...

Page 61: ...ure free cooling will not be allowed Outdoor Enthalpy Changeover This option should be used in climates with higher humidity conditions The A Series control can use an enthalpy switch or enthalpy sensor or the standard installed outdoor dry bulb sensor and an accessory relative humidity sensor to calculate the enthalpy of the air Setting Configuration ECON E SEL 2 requires that the user configure ...

Page 62: ...or relative humidity sensor and the options for changeover now available See Fig 11 for an example of a custom curve constructed on a psychrometric chart UNOCCUPIED ECONOMIZER FREE COOLING This Free Cooling function is used to start the supply fan and use the economizer to bring in outside air when the outside temperature is cool enough to pre cool the space This is done to delay the need for mech...

Page 63: ...mizer must determine exactly what set point it should try to maintain The set point the economizer attempts to maintain when free cooling is located at Run Status VIEW EC C P This is the economizer control point The control selects set points differently based on the control type of the unit This control type can be found at Configuration UNIT C TYP There are 6 types of control C TYP 1 VAV RAT C T...

Page 64: ...ssure Minhnurn Speed BRMN This configu ration is the minilnurn allowed VFD speed during building pres sure control This configuration is only active when BRCF 3 Building Pressure Maxhnurn Speed BRMX This configu ration is the rnaxilnurn allowed VFD speed during building pressure control This configuration is only active when BRCF 3 VFD Fire Speed BRFS This configuration is the VFD speed ovemde whe...

Page 65: ...9BR TM building pressure timer This control function is allowed to add or select power ex haust stages at any time except that a delay time must expire after a stage is added or subtracted Any time a stage change is made a timer is started which delays staging for 10 BRTM seconds The default for BRTM is 1 therefore the delay between stage changes is set to 10 seconds The logic to add or subtract a...

Page 66: ... connected to terminal TB5 8 and 9 to monitor the smoke detector Inputs on the CEM board can be used to put the unit in the Pressurization Evacuation and Smoke Purge modes These switches or inputs are connected to TB6 as shown below Refer to Major System Components section on page 101 for wiring diagrmns Pressurization TB6 12 and 13 Evacuation TB6 13 and 14 Smoke Purge TB6 13 and 15 Each mode must...

Page 67: ...The EC MNvalue is the design value for maxflnum occupancy The logic that is used to control the dampers in response to IAQ conditions is shown in Fig 12 The _nfortLink TM con trols will begin to open the damper from the IAQ M position when the IAQ level begins to exceed the OAQ level by a configurable amount which is referred to as Differential Air Quality Low Limit DAQ L If OAQ is not being measu...

Page 68: ...oint bnfiguration _IAQ AQ SP _D EOF The con trol can also be set up to respond to a discrete IAQ input The discrete input is connected to TB5 6 and 7 IAQ Discrete Input Config bn figuration IAQ AQ T IQ L 3 This configuration is used to set the type of IAQ sensor The following are the options IQ LC 0 No Discrete Input This is used to indicate that no discrete input will be used and the standard IAQ...

Page 69: ...Q IAQ P IQ P H If this mode is enabled the indoor fan and heat interlock relay VAV will be energized IAQ Purge Configuration IA Q IA Q P IQ PG This is used to enable IAQ pre occupancy purge IAQ Purge Duration Con figuration IAQ IAQ P This is the maximum amount of time that a purge call occur IAQ Purge Lo Temp Min Pos Configuration IAQ IAQ P IQ RL This is used to configure a low limit for damper po...

Page 70: ...y RH Set Point D RH S This is the dehumidi fication relative humidity trip point OPERATION Dehumidification and reheat can only occur if the unit is equipped with either staged gas or hydronic heat Dehumidification without reheat can be done on any unit but Configuration DEHU D SEL must be set to 2 If the machine s control type is a TSTAT type Configura tion UNIT_C TYP 3 or 4 and the discrete inpu...

Page 71: ...occupied state Once set Temperature Compensated mode will stay on until the unit goes into the Occupied mode The Start Bias Time will be written into the CCN Linkage Equipment Table if the unit is controlled in DAV mode If the Unoccupied Economizer Free Cool mode is active Operating Modes HVAC UNOCC FREE COOL when temperature com pensated start begins the Unoccupied Free Cool mode will be stopped ...

Page 72: ...set StYF Low Alert Limit Unocc SRL U If the space tem perature is below the configurable unoccupied SPT Low Alert Lrinit SRL U then Alert 300 will be generated and the unit will be stopped The alert will automatically reset StYF High Alert Limit Unocc SRH U If the space tem perature is above the configurable unoccupied StYFHigh Alert Lrinit SRH U then Alert 301 will be generated and the unit will ...

Page 73: ...measured temperature Space Temperature Sensor Trim SPT T This variable is used to adjust the space temperature sensor reading The sensor reading can be adjusted 4 10o F to match the actual measured temperature Circuit A Saturated Condenser Temperature Trim CTA T This variable is used to adjust the saturated condenser tempera ture sensor reading for circuit A The sensor reading can be adjusted 4 30...

Page 74: ...y open for off If a field supplied demand lhnit switch is used that is normally closed change this variable to closed IAQ Discrete Input Low IAQ L The IAQ discrete in put is set for normally open when low If a field supplied IAQ discrete input is used that is normally closed change this vari able to closed Fire Shutdown Off FSD L The fire shutdown input is set for normally open when off If a field...

Page 75: ...unction is enabled at Config urafion_COOL _MLV When this function is enabled an additional stage of cooling capacity is provided by the unit control staging sequences see Tables 52 54 58 and 60 Space Temperature Offset E Space temperature off set corresponds to a slider on a T56 sensor that allows the occu pant to adjust the space temperature by a configured range during an occupied period This se...

Page 76: ...this variable is set to YES then Sunday will be included in that period s oc cupied time schedule If this variable is set to NO then the peri od s occupied thne schedule will not be used on Sunday This variable can be set for Periods 1 through 8 Holiday In Period PER X cDAYS cHOL This variable is used to include or remove a Holiday from the schedule Each period is assigned an occupied on and offti...

Page 77: ...circuit breakers Tripped compressor circuit breakers Unit is turned offthrough the CCN network Single Circuit Stoppage If a single circuit stops incorrectly there are several possible causes The problem should be investigated using information from the Alarms and Alerts section on page 93 Service Analysis Detailed service analysis can be found in Tables 94 96 and in Fig 14 Restart Procedure Before...

Page 78: ... transducer 4 Airflow Restricted 1 Coil iced up 2 Coil dirty 3 Air filters dirty 4 Dampers closed Indoor Air Fan Stopped 1 Electrical connections loose 2 Fan relay defective 3 Motor overload open 4 Motor defective 5 Fan belt broken or slipping SOLUTION Check active alarms using local display Restore power After finding cause and correcting replace with correct size fuse Check secondary fuse s repl...

Page 79: ...power head 5 Check low pressure setting 6 Remove obstruction Check for open doors or windows 1 Add refrigerant 2 Replace control 3 Purge and evacuate system 4 Clean or replace 1 Support piping as required 2 Replace compressor 1 Repair leak 2 Check wiring and relays Check heater and replace if defective Adjust expansion valve 1 Repair leak and recharge 2 Adjust expansion valve Remove restriction or...

Page 80: ...ilters Check gas pressure at manifold Refer to gas valve adjust ment in Installation Start up and Service Manual Allow time for W2 to energize Decrease load Remove restriction Check economizer position and configuration Adjust mini mum position using ComfortLink scrolling marquee Check rotation of blower thermostat heat anticipator set tings and temperature rise of unit Adjust as needed Check all ...

Page 81: ...HEATING t Wf FROM BASE CONTROL BOARD ENERGIZES W ON IGC 1 MINUTE LOCK ON RELAY ON IGC 18 ENERGIZED 1 BLOWN 5 _P FUSE 2 DEFECTIVE 24V TRANS BROKEN _tRE 4 NO _ TO UNIT I COMBUSTION RELAY B_ RGI_ _ INDUCED DRAFT MOTOR IOM TEP_INAL Cl_ ON t I IF IDM iS TURNING AT CORRECT SPEED AT L_ 2400 RPM HN_ EFFECT SENSOR SENDS CORRECI SIGNAL TO TERMINAL Jl ON K31C I IF UMIT SWITCH kND ROLLOUT SWITCH ARE CLOSED IG...

Page 82: ...109 0 918 110 0 903 111 0 888 112 0 873 113 0 858 114 0 843 115 0 829 116 0 815 117 0 801 118 0 787 119 0 774 120 0 761 121 0 748 122 0 735 123 0 723 124 0 710 125 0 698 126 0 686 127 0 674 128 0 663 129 0 651 130 0 640 131 0 629 132 0 618 133 0 608 134 0 597 135 0 587 136 0 577 137 0 567 138 0 557 139 0 548 140 0 538 141 0 529 142 0 520 VOLTAGE DROP RESISTANCE Ohms TEMP RESISTANCE F Ohms 7 686 14...

Page 83: ...2 1 935 1 889 1 844 1 799 1 754 1 710 1 666 1 623 1 580 1 538 1 497 1 457 1 417 1 378 1 340 1 302 1 265 1 229 1 194 1 160 1 126 1 093 1 061 1 030 0 999 0 969 0 940 0 912 0 885 0 858 0 832 0 807 0 782 0 758 0 735 0 713 0 691 0 669 O 649 0 629 0 610 0 591 0 573 0 555 0 538 0 522 7 855 7 499 7 161 6 840 6 536 6 246 5 971 5 710 5 461 5 225 5 000 4 786 4 583 4 389 4 204 4 028 3 861 3 701 3 549 3 404 3 ...

Page 84: ...9 2 290 2 260 2 231 2 202 2 173 2 144 2 115 2 087 2 059 2 030 2 003 1 975 1 948 1 921 1 894 1 867 1 841 1 815 1 789 1 763 1 738 1 713 1 688 1 663 1 639 1 615 1 591 1 567 1 544 1 521 1 498 1 475 1 453 1 431 1 409 1 387 1 366 1 345 1 324 1 304 1 284 1 264 1 244 1 225 1 206 1 187 1 168 1 150 1 132 1 114 1 096 1 079 1 062 1 045 1 028 1 012 0 996 0 980 0 965 0 949 0 934 0 919 0 905 RESISTANCE TEMP Ohms...

Page 85: ...0 887 0 862 0 837 0 813 0 790 0 767 0 745 0 724 0 703 0 683 0 663 0 645 0 626 0 608 0 591 0 574 0 558 0 542 0 527 0 512 0 497 0 483 0 470 0 457 0 444 0 431 0 419 0 408 0 396 0 386 0 375 0 365 0 355 0 345 0 336 0 327 0 318 0 310 0 302 0 294 0 287 0 279 0 272 0 265 RESISTANCE Ohms 2 315 2 235 2 157 2 083 2 011 1 943 1 876 1 813 1 752 1 693 1 637 1 582 1 530 1 480 1 431 1 385 1 340 1 297 1 255 1 215 ...

Page 86: ...880 119 1 900 120 1 920 121 1 940 122 1 960 123 1 980 124 2 000 125 2 020 126 2 040 127 2 060 128 2 080 129 2 100 130 2 120 131 2 140 132 2 160 133 2 180 134 2 200 135 2 220 136 2 240 137 2 260 138 2 280 139 2 300 140 2 320 141 2 340 142 2 360 143 2 380 144 2 400 145 2 420 146 2 440 147 2 460 148 2 480 149 2 500 150 VOLTAGE PRESSURE DROP V PSIG 2 520 151 2 540 152 2 560 153 2 580 154 2 600 155 2 6...

Page 87: ... 021 268 2 031 264 2 041 265 2 051 266 2 060 267 2 070 268 2 080 269 2 090 270 2 100 271 2 110 272 2 120 278 2 129 274 2 139 275 2 149 276 2 159 277 2 169 278 2 179 279 2 188 280 2 198 281 2 208 282 2 218 288 2 228 284 2 238 285 2 247 286 2 257 287 2 267 288 2 277 289 2 287 290 2 297 291 2 307 292 2 316 293 2 326 294 2 336 295 2 346 296 2 356 297 2 366 298 2 375 299 2 385 300 2 395 301 2 405 302 2...

Page 88: ...12 1 220 213 1 226 214 1 233 215 1 239 216 1 245 217 1 251 218 1 257 219 1 263 220 1 269 221 1 275 222 1 282 223 1 288 224 1 294 225 1 300 226 1 306 227 1 312 228 1 318 229 1 325 230 1 331 231 1 337 232 1 343 233 1 349 234 1 355 235 1 361 236 1 367 237 1 374 238 1 380 239 1 386 240 1 392 241 1 398 242 1 404 243 1 410 244 1 416 245 1 423 246 1 429 247 1 435 248 1 441 249 1 447 250 1 453 251 1 459 2...

Page 89: ... 536 3 194 537 3 200 538 3 206 539 3 213 540 3 219 541 3 225 542 3 231 543 3 237 544 3 243 545 3 249 546 3 256 547 3 262 548 3 268 549 3 274 550 3 280 551 3 286 552 3 292 553 3 298 554 3 305 555 3 311 556 3 317 557 3 323 558 3 329 559 3 335 560 3 341 561 3 347 562 3 354 563 3 360 564 3 366 565 3 372 566 3 378 567 3 384 568 3 390 569 3 397 570 3 403 571 3 409 572 3 415 573 3 421 574 3 427 575 3 433...

Page 90: ...riable displays the current amount of unit cooling capacity in percent of lllaxilllUlI1 Run Status VIEW cHr C P This variable displays the current heating control point for use with staged gas control option only a target value for air temperature leaving the sup ply duct Run Status VIEW cHEST This variable displays the current number of heating stages active for staged gas control option only Com...

Page 91: ...CCN LINKAGE DISPLAY TABLE The CCN Linkage display table provides information on unit linkage See Table 109 COMPRESSOR RUN HOURS DISPLAY TABLE The Compressor Run Hours Display Table displays the number of mn time hours for each compressor See Table 110 COMPRESSOR STARTS DISPLAY TABLE The Com pressor Starts Display Table displays the number of starts for each compressor See Table 111 TIME GUARD DISP...

Page 92: ...l Mode End CtI Temp RAT SPT or Zone Occupied Heat Mode End Occupied Heat Mode Start Unoccup Heat Mode End Unoccup Heat Mode Start ascii string spelling out the hvac modes J RANGE UNITS j POINT UCCLSTRT UCCL END OCCLSTRT OCCL END CTRLTEMP OCHT END OCHT STRT UCHT END UCHT STRT string WRITE STATUS Table 109 CCN Linkage Display Table ITEM LINK MODE L Z T LC SP LH SP EXPANSION I RANGE CCN LINKAGE Linka...

Page 93: ...un continuously for 5 minutes with no detectable problems before the strike counter is reset to zero All the alarms and alerts are SUlrunarized in Table 114 DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSES T051 P051 Circuit A Compressor 1 Failure T052 P052 Circuit A Compressor 2 Failure T055 P055 Circuit B Compressor 1 Failure T056 P056 Circuit B Compressor 2 Failure Alert codes 051 052 055 and 056 are ...

Page 94: ...p circuit Automatic Stop circuit Manual Stop circuit Manual Stop circuit Manual Compressor A2 shutdown Automatic Stop circuit Automatic Stop circuit Manual Compressor B2 shutdown Automatic Circuit A High Saturated Suction Temperature Circuit B High Saturated Suction Temperature Circuit A High Head Pressure Stop circuit Automatic circuit Manual circuit Manual circuit Automatic Stop Stop Stop Stop c...

Page 95: ...c Thermostat wiring error T423 Thermostat Y and W Inputs ON Alert Automatic Thermostat issues T424 Thermostat G Input OFF on a Call for Cooling Turn fan on Automatic Thermostat or wiring issues T500 Current Sensor Board Failure A1 Stop compressor A1 Automatic Faulty board or wiring T501 Current Sensor Board Failure A2 Stop compressor A2 Automatic Faulty board or wiring T502 Current Sensor Board Fa...

Page 96: ...ge Reset Sensor Failure If the unit is configured to use the remote EDT 4 to 20 mA reset in put bnfiguration cEDT R cRES S and the sensor reading is less than 2 mA then the alert will occur When this occurs the control will default to the internal set points The sensor is connected to the optional CEM module For this sensor to be used the EDT 4 to 20 mA reset input bnfiguration EDT R RES S must be...

Page 97: ...or 1 minute or less than 20 F for 20 seconds continuously the second compressor of the affected circuit if it exists will be shut down with a local alert P120 P121 and a 10 minute thneguard will be added to the compressor If saturated suction temperature continues to be less than 20 F for 4 minutes less than 10 F for 2 minutes less than 0 F for 1 minute or less than 20 F for 20 seconds continuousl...

Page 98: ...Failure This alert indi cates a problem with the optional remote 4 to 20 mA demand limit signal Inputs_4 20 cDLM M that is connected to the CEM module if the signal reads less than 2 mA If this occurs then demand limiting will be disabled The unit must be configured for 4 to 20 mA Demand Limiting using the Demand Limit Select Configuration cDMD L DM L S T178 4 20 mA Static Pressure Reset VFD Failu...

Page 99: ...figuration ALLM BBH If the measured pressure Pressures cAIR P cBP is above the lhnit for 5 minutes then the alert will occur T314 IAQ Above Limit If the unit is configured to use an CO sensor and the level Inputs AIR Q IAQ is above the configurable IAQ High Alert Limit Configuration _ ALLM IAQ H for 5 minutes then the alert will occur The unit will continue to mn and the alert will automatically r...

Page 100: ...Verify thermostat and thermostat wiring When Y2 turns on the software will behave as if Y1 and Y2 are both on When Y2 turns off the software will behave as if Y1 and Y2 are both Off This alert resets automatically when Y1 is turned on T422 Thermostat W2 Input On without Wl On This alert occurs in Thermostat Mode when W2 is energized and Wl is not Verify thermostat and thermostat wiring When W2 tur...

Page 101: ...f the unit behind the filter access door The board also contains a second LEN port than can be used with the accessory Navigator TM display VAV BOARD ECB2 The VAV board which is the same hardware as the ECB1 is used to control the supply fan on VAV units See Fig 27 It sends a 4 to 20 mA signal to the VFD based on a supply duct pressure sensor connected to the board The board also accepts a signal ...

Page 102: ...CONTACTS w_ _4VAC PIC _ _ a D II _ _ HEAl_IT 24 VAC sSS_MCA_MC _ __c_II 7 __ _o_ _ _ _ E _ r _ _ J RE MOTEL l I l I _ i REO _ _ c_m_r o _ 4 _ J L tSb RATI _ P o4 l _ Ptz_ _ _ E _ _ _ I _LrrF _ RO_ ACC _ M RE_O_RPOT _ L _ r l FLIER I _u o I I I I I I ss _L I _ _ _J I 5_ r_ _ J C7 F TB5 4_ I ZZF J _o _ r 13 _o_ _ TB3 r_ _ _ _ J ri i_ o _ INIO 4 N9 4 _N8 b 24 VAC CCNsld CCN CCN CCN L NsHd LER IEN C L...

Page 103: ... i THE 020 027 UNITS ONLY HAVE 3 CONPRESSORS AND DO HOT USE THE CON B2 CRANKCASE NEAT RS TB4 TB4 I_A_SI 2 CAI C2 A2 C_ C BI C2 C_Z C2 OECIC 0F 2C IFCA _ Fig 15 1 Typical Main Control Box Wiring Schematic 48 50AJ AK AW AY Units cont 103 ...

Page 104: ... 3 o Q 0 i E o i x o o 0 m 0 i I _D i I I u v OhF _ 104 ...

Page 105: ...SEE CON ROL TRAN 3 SMOKE LABEL 1 PL20_ TRAN I WT _ WHT PL7 I BOAR D _ RED __ _ _ R H q r Ril _ CD _ r_ I I _ _J I a u_ R r _ gL_ CE tOP c_ _ED_ _ 4 I R_ q F_FD SC_ S1 E _ J3 2 P 4 2 C MOI BLAT NG setCO _Ro w _ Ii _ L__ _ SCB J3__AS H Ar lop GR I_ GND PL4 4 TO NEXT PAGE Fig 17 Typical Auxiliary Control Box Wiring Schematic 105 ...

Page 106: ...RL 3d_ PE C _ _d_ _I 1 P B ED dHZ _ o I P35 1 RL_2_ s Fig 17 Typical Auxiliary Control Box Wiring Schematic cont 106 ...

Page 107: ...L _ _ _ L i_ _ i 1 i _ J I C0_1 NU_I ONS _ _i o_ ii_i _ _ _ L_ t I n_ _ _ i i Fig 18 1 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown 107 ...

Page 108: ...L_o_ BLK _ _J5 r_RED_ LATI_BLI_ _ K_ IN5 _V IN4 5V IN3 5V _V STAGED HEAT BOARD SCB HKSOAA032 Z TO NEXT PAGE Fig 19 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown 108 ...

Page 109: ...i Fig 19 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown cont 109 ...

Page 110: ... 0 t_ o o o o N t_ _ t_ o I o E e o e o o _ W o I I o 110 ...

Page 111: ...FORMER WIRING FOR SUPPLY V IAGES ARE SHOWN IN TABLE C D FOR 208 230 VOLT UNITS TIE TRANSFORMERS ARE fACTORY WIR D FOR 230 VOlT AND MUST B REWIRED IN THE PI ID _OR 208 VOLI APPLICA IONS 2 ON 208 250 VOLT UNITS S SENSORS SENSE CURRENT THROU6H SMALLER GAGF WIR RUN IN PARAUEL TO THE MAIN POWER BLACX WIRE fOR O HER VOW AGES SENSOR WILL BY IN MAIN POWER LISP O M6 Fig 21 Typical Power Schematic 48 50AJ A...

Page 112: ...NSFORMER CONNECT BL_ o 600V PRIMARY VOLTAGE 575V BLK COMM YEI SECONDARY VOLTAGE 24V XI BLK COMM COMM COMM X3 YEI YELo o 4O0V TRANSFORMER CONNECI PRIMARY VOLIAGE 400V 380V BLK COMM YEL SECONDARY VOLIAGE 24V XI BLK COMM X4 YEL COMM COMM iYELG o ALT VARIABLE FREQUENCY INVERTER DRIVE ZFM POWER EXIIAUSII OP AND ACCESSORY FROM PREVIOUS PAGE ORN BLU PECA PL231 PL24 5 RED_ _ 8LK BL K_ BLK PL23 2 PL24 4 P ...

Page 113: ...113 i e o e e o ID o o v E e o I 6_ ...

Page 114: ... J _ _ i_ i _ _ 5 I I II i _ 0 i o t 0 _ I 2 O _ F_ Hi Ijr_ I 0141 U I i A 0 I S cXP C_ ct c J i c C q x _ UI_ P a J 4 2 3 blA f f Ij 3 0 I PL I S _ i c_ cn _ _ _ I _s X_ o o o I I I _ I 400 _ II I I I I _ I I I 114 o E o E O O m O o o I _ ...

Page 115: ... i o m o_ o N t_ o m o o J c O o 0 c O I 115 ...

Page 116: ...f LLI 3 L _ o 7 I o I o I _ Y I i7 I _o I I _ L 1 I d ii I i ill N v 0 o b 0 o _1 _o I m 116 ...

Page 117: ...H RAT RLA RLY RS SCB SCT SDU SST T 55 T 56 TB TRAN VAV VFD 45_ 0 Plug Return Air Relative Humidity Return Air Temperature Sensor Rated Load Amps Relay Rollout Switch Staged Gas Heat Control Board Saturated Condensing Temperature Sensor Scrolling Marquee Display Saturated Suction Temperature Sensor Room Temperature Sensor Room Temperature Sensor with Setpoint Terminal Block Transformer Variable Air...

Page 118: ...emp AN4 J8 18 20 thermistor 18 20 RAT Return air temperature AN5 J8 9 10 9 thermistor ohms SA TEMP Supply air temperature AN6 J8 11 12 11 thermistor ohms OAT Outdoor air temperature AN7 J8 13 14 13 thermistor ohms SPT Space temperature T55 56 AN8 J8 1 2 1 thermistor ohms SPTO Space temperature offset T56 AN9 J8 3 4 3 thermistor ohms IAQ IAQMINOV IAQ analog input ANIO J8 5 6 5 thermistor ohms FLTS ...

Page 119: ...IN REFERENCE J4 1 2 J4 3 4 J5 1 3 J5 4 6 J9 1 2 J7 1 3 J8 1 3 J8 4 6 J8 7 9 J8 16 18 SIGNAL PIN S 2 4 1 24VDC 2 0 20mA in 3 GND 4 24VDC 5 0 20mA in 6 GND l 0 20mA 2 GND I PP MP Data 2 24VAC 3 GND 1 2 RLY1A 3 RLY1B 4 5 RLY2A 6 RLY2B 7 8 RLY3A 9 RLY3B 16 17 RLY6A 18 RLY6B PORT STATE 24VAC I 0VAC 0 24VAC I 0VAC 0 0 20mA 0 20mA 0 20mA OUT Belimo PP MP Protocol 1 Closes RLY1A RLY1B 1 Closes RLY2A RLY2B...

Page 120: ...8 4 6 J8 7 9 J8 16 18 SIGNAL PIN S 2 4 1 24VDC 2 0 20mA in 3 GND 4 24VDC 5 0 20mA in 6 GND 1 0 20mA 2 GND I PP MP Data 2 24VAC 3 GND 1 2 RLY1A 3 RLY1B 4 5 RLY2A 6 RLY2B 7 8 RLY3A 9 RLY3B 16 17 RLY6A 18 RLY6B PORT STATE 24VAC I 0VAC 0 24VAC I 0VAC 0 0 20mA 0 20mA 0 20mA OUT Belimo PP MP Protocol 1 Closes RLY1A RLY1B 1 Closes RLY2A RLY2B 1 Closes RLY3A RLY3B 1 Closes RLY6A RLY6B ADDRESS DIP SWITCHES...

Page 121: ...stor 7 8 10 5v 1l Vin 12 GND thermistor 10 11 13 5v 14 Vin 15 GND thermistor 13 14 1 5v 2 Vin 3 GND thermistor 1 2 4 5v 5 Vin 6 GND thermistor 4 5 7 5v 8 Vin 9 GND thermistor 7 8 1 3 1 O 20mA 2 GND 3 O 20mA 4 GND 1 2 RLY1A 3 RLY1B 4 5 RLY2A 6 RLY2B 7 8 RLY3A 9 RLY3B 10 11 RLY4A 12 RLY4B 13 14 RLY5A 15 RLY5B PORT STATE O 5VDC thermistor ohms O 5VDC thermistor ohms O 5VDC thermistor ohms O 5VDC ther...

Page 122: ...e the unit is equipped with suction pressure transducers and discharge saturation temperature sensors it can also display pressures typically obtained from gages The control includes a full alarm history which can be accessed from the display In addition through the scrolling marquee the user can access a built in test routine that can be used at start up colmnission and to diagnose operational pr...

Page 123: ... motors as well as feedback information and diagnostics information The control has a self calibration routine that allows the motor position to be configured at initial unit start up The motor is located on the economizer and can be reached through the filter access door THERMISTORS AND PRESSURE TRANSDUCERS The 48 50AJ AK AW AY units are equipped with thermistors and pressure transducers These un...

Page 124: ... supports the dry bulb changeover methods If the other methods are to be used then a field installed humidity sensor must be installed for outdoor air enthalpy and customer curve control and two humidity sensors must be installed for differential enthalpy Installation holes are pre drilled and wire harnesses are installed in every unit for connection of the humidity sensors The _mfortLink controls...

Page 125: ... 8 Smoke Detector Remote Alarm external contacts TB5 9 Smoke Detector Remote Alarm external contacts 10 Fire Shutdown 24 VAC external 11 Fire Shutdown external contact 12 Fire Control Common external contact 13 Fire Pressurization external contact 14 Fire Evacuation external contact 15 Fire Smoke Purge external contact 16 Not Used TB 6 FIELD CONNECTIONS HY84HA101 in Main Control Box 1 Remote Occup...

Page 126: ...sitive pin of each system element colmnunication connector must be wired to the positive pins of the system elements on either side of it This is also required for the negative and signal ground pins of each system element Wiring connections for CCN should be made at TB3 See Fig 35 Consult the CCN Contractor s Manual for further information NOTE Conductors and drain wire must be 20 AWG American Wi...

Page 127: ...ent the unit from starting If abnormal conditions occur unplug the connector If conditions return to normal check the CCN connector and cable Run new cable if necessary A short in one section of the bus can cause problems with all system elements on the bus REMOTE CCN SITE NON CARRIER HVAC EQUIPMENT CON CID eL HVAC COMPUTER WITH ComfortVlEW TM SOFTWARE CCN WEB OR NETWORK OPTIONS TELINK F BRIDGE RE...

Page 128: ...e tight Failure to do so can result in water leakage into the evaporator section of the unit Cleaning Inspect unit interior at beginning of each heat ing and cooling season and as operating conditions require Remove unit side panels and or open doors for access to unit interior MAIN BURNERS At the beginning of each heating sea son inspect for deterioration or blockage due to corrosion or other cau...

Page 129: ...iodic clean water rinse is very beneficial for coils that are applied in coastal or industrial enviromnents However it is very important that the water rinse is made with very low velocity water stream to avoid damaging the fin edges Monthly cleaning as described below is reconnnended Routine Cleaning of Coil Surfaces Monthly cleaning with Totaline R enviromnentally sound coil cleaner is essential...

Page 130: ...CREENS Clean screens with steam or hot water and a mild detergent Do not use disposable filters in place of screens Lubrication FAN SHAFT BEARINGS Lubricate bearings at least ev ery 6 months with suitable bearing grease Do not over grease Typical lubricants are given below MANUFACTURER LUBRICANT Texaco Regal AFB 2 Mobil Mobilplex EP No 1 Sunoco Prestige 42 Texaco Multifak 2 Preferred lubricant bec...

Page 131: ...re motor in fixed position Recheck belt tension after 24 hours of operation Adjust as necessary Refer to Installation In structions for proper tension values 7 Restore power to unit Evaporator Fan Motor Replacement 1 Turn offunit power supply 2 Remove upper outside panel and open hinged door to gain access to motor 3 Fully retract motor plate adjusting bolts 4 Loosen the 2 rear nearest the evapora...

Page 132: ...luminum design microchannel heat exchangers will reduce refrigerant charge and overall operating weight As a result charging procedures for MCHX units require more accurate measurement techniques Charge should be added in small increments Using cooling charging charts provided Fig 44 50 add or remove refrigerant until condi tions of the chart are met As conditions get close to the point on the cha...

Page 133: ...r Air Temperature deg F 115 120 125 150 145 _ 140 135 130 125 120 _ 115 110 105 i 100 95 _ 9o 85 8o 75 7O 55 20 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating i Reduce Charge if Above Curve 60 65 70 75 80 85 90 95 100 105 Outdoor Air Temperature deg F Curve 5F 5F 5F 110 115 120 125 LEGEND MCHX Microchannel Heat Exchanger SST Satu...

Page 134: ...Air Temperature deg F 15O 145 _ 140 E_ 135 130 125 _ 120 ffl E 115 _cj_ 110 _ 105 100 _ g5 o go _ 85 _ 8o 69 75 7O 55 25 and 27 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating Reduce Charge if Above Curve Add Charge if Below Curve 60 65 70 75 80 85 90 95 100 105 110 115 120 125 Outdoor Air Temperature deg F LEGEND MCHX Microchanne...

Page 135: ...erature deg F 5_ F 4 F 3 F 125 150 145 _ 14o 135 130 125 120 Q 115 110 _ 105 100 95 9o 85 89 69 75 7O 55 30 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating i Reduce Charge if Above Curve Add Charge if Below Curve 60 65 70 75 80 85 90 95 100 105 110 115 120 Outdoor Air Temperature deg F LEGEND MCHX Microchannel Heat Exchanger SST S...

Page 136: ...SST F F F 100 105 110 115 120 155 150 145 140 135 130 _ 125 120 _ 115 110 105 _ 100 95 9o 85 35 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating Reduce Charge if Above Curve if Below Curve 55 60 65 70 75 80 85 90 95 100 105 110 115 Outdoor Air Temperature deg F SST SST SST 55 45 35 120 LEGEND MCHX Microchannel Heat Exchanger SST Sa...

Page 137: ...urated Suction Temperature Fig 48 Charging Chart 48 50A2 A3 A4 A5040 with R 410A Refrigerant 150 145 _ 140 o_ 135 130 125 120 Q_ 115 110 _ 105 100 95 9o 8s 8o 9 75 7O 55 50 Ton MCHX Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating Reduce Charge if Above Curve 60 65 70 75 80 85 90 95 100 105 110 115 120 125 Outdoor Air Temperature deg F LEGEND MCHX Mi...

Page 138: ...mperature deg F F F F 125 15O 145 _ 140 135 130 125 120 Q E 115 03 I 110 o3 _ 105 t 03 lOO t O 03 03 95 9O 85 8O 75 7O 55 60 60 Ton MCHX CIRCUIT B Charging Chart All Compressors on a Circuit Must be Operating All Outdoor Fans Must be Operating Reduce Charge if Above Curve Add Charge if BelowCurve 65 70 75 80 85 90 95 100 105 110 115 120 Outdoor Air Temperature deg F F F F 125 LEGEND MCHX Microchan...

Page 139: ... hold the burner support plate flange to the vestibule plate 10 Lift burner assembly out of unit 11 Reverse procedure to re install burners Filter Drier Replace whenever refrigerant system is ex posed to atmosphere Replacement Parts A complete list of replacement parts may be obtained from any Carrier distributor upon request OUTLET PRESSURE HIGH FIRE REGULATOR TAP ON SIDE ADJUSTMENT SCREW 1 8 1N ...

Page 140: ...n Cap Override Slow Change Cap Override MODE TRIP HELPER Unoccup Cool Mode Start Unoccup Cool Mode End Occupied Cool Mode Start Occupied Cool Mode End CtI Temp RAT SPT or Zone Occupied Heat Mode End Occupied Heat Mode Start Unoccup Heat Mode End Unoccup Heat Mode Start ascii string spelling out the hvac modes CCN LINKAGE Linkage Active CCN Linkage Zone Control Tmp Linkage Curr Cool Setpt Linkage C...

Page 141: ...lay Compressor B2 Relay TEST HEATING Requested Heat Stage Heat Relay 1 Heat Relay 2 Relay 3 W1 Gas Valve 2 Relay 4 W2 Gas Valve 2 Relay 5 W1 Gas Valve 3 Relay 6 W2 Gas Valve 3 RANGE ON OFF YES NO YES NO YES NO YES NO ON OFF ON OFF ON OFF 0 100 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF O MAX ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF UNITS CCN POINT MAN CTRL UNIT STOP SOFTSTOP SFANFORC FILT4C...

Page 142: ...1 Demand Limit Switch 2 Dehumidify Switch Input COMPRESSOR FEEDBACK Compressor A1 Feedback Compressor A2 Feedback Compressor B1 Feedback Compressor B2 Feedback THERMOSTAT INPUTS Thermostat G Input Thermostat W1 Input Thermostat W2 Input Thermostat Y1 Input Thermostat Y2 Input FIRE SMOKE INPUTS Fire Shutdown Input Pressurization Input Evacuation Input Smoke Purge Input RELATIVE HUMIDITY Outside Air...

Page 143: ...OFF ON OFF ON OFF ON OFF ON OFF ON OFF 0 100 SFAN RLY SFAN VFD PEA PEB PE C CO NDFANA CONDFANB CMPA1 CMPA2 MLV CMPB1 CMPB2 HS1 HS2 HS3 HS4 HS5 HS6 HIR ECONOPOS 0 100 ON OFF ON OFF ECONOCMD ECONPWR ALRM forcible forcible forcible forcible MODE CONFIGURATION ITEM UNIT _C TYP _CVFN _RM CF _CEM _TCS C _TCS H _SFS S _SFS M _ VAV S _SlZE _DP XR _SP XR _RFG T _CND T _MAT S _MAT R _MAT D _ALTI _DLAY _STAT...

Page 144: ...h Compare Value High OAT Lockout Temp OA Dewpoint Temp Limit Outside Air RH Sensor Economizer Control Type Economizer Switch Config ECON OPERATION CONFIGS Economizer Prop Gain Economizer Range Adjust Economizer Speed Adjust Economizer Deadband UNOCC ECON FREE COOLING Unoc Econ Free Cool Cfg Unoc Econ Free Cool Time Un Ec Free Cool OAT Lock RANGE UNITS 10 10 20 55 0 600 Yes No Yes No 80 150 Enable ...

Page 145: ...Reference IAQ High Reference OAQ Low Reference OAQ High Reference IAQ PRE OCCUPIED PURGE IAQ Purge IAQ Purge Duration IAQ Purge LoTemp Min Pos IAQ Purge HiTemp Min Pos IAQ Purge OAT Lockout DEHUMIDIFICATION CONFIG Dehumidification Config Dehumidification Sensor Econ disable in DH mode Vent Reheat Setpt Select Vent Reheat RAT offset Vent Reheat Setpoint Dehumidify Cool Setpoint Dehumidify RH Setpoi...

Page 146: ...o Fan Status Sw Off Dmd Lmt Sw 1 Off Dmd Lmt Sw 2 Dehumid Off IAQ Disc Input Low Fire Shutdown Off Pressurization Sw Off Evacuation Sw Off Smoke Purge Sw Off DISPLAY CONFIGURATION Test Display LEDs Metric Display Language Selection Password Enable Service Password RANGE UNITS 1 239 0 239 1 5 multi text strings ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 0 99 YES NO 0 4 0 4 YES NO YES NO YES NO 10 24...

Page 147: ...12 1 5 1 7 0 90 CCN POINT TIME MOY DOM DOWDISP YOCDISP PER1MON PER1TUE PER1WED PER1THU PER1FRI PER1SAT PER1SUN PER1HOL PER10CC PER1 UNC HOL_MON1 HOL_DAY1 HOL_LEN1 STARTM STARTW STARTD MINADD STOPM STOPW STOPD MINSUB DEFAULT Period 1 only Yes Yes Yes Yes Yes Yes Yes Yes 00 00 24 00 4 1 7 6O lO 5 7 6O PAGE NO 75 77 75 77 75 77 75 77 75 77 27 28 75 77 76 77 76 77 76 77 76 77 76 77 76 77 76 77 76 77 7...

Page 148: ...Sat Condensing Tmp Cir A Sat Suction Temp Compressor B1 Relay Compressor B1 Feedback Compressor B1 Timeguard Compressor B2 Relay Compressor B2 Feedback Compressor B2 Timeguard Cir B Discharge Pressure Cir B Suction Pressure Cir B Sat Condensing Tmp Cir B Sat Suction Temp Economizer Active Conditions which prevent economizer being active Econ Act Unavailable Remote Econ Disabled DBC OAT lockout DEW...

Page 149: ...pensated Start IAQ pre occ purge active Linkage Active DAV Mech Cooling Locked Out HVAC Mode Numerical Form Unoccup Cool Mode Start Unoccup Cool Mode End Occupied Cool Mode Start Occupied Cool Mode End CtI Temp RAT SPT or Zone Occupied Heat Mode End Occupied Heat Mode Start Unoccup Heat Mode End Unoccup Heat Mode Start HVAC Mode Evaporator Discharge Trap Leaving Air Temperature Mixed Air Temperatu...

Page 150: ...2 Relay HEATING Heat Relay 1 Heat Relay 2 Relay 3 Wl Gas Valve 2 Relay 4 W2 Gas Valve 2 Relay 5 Wl Gas Valve 3 Relay 6 W2 Gas Valve 3 Heat Interlock Relay ECONOMIZER Economizer Act Curr Pos Economizer Act Cmd Pos Economizer Power Relay GENERAL OUTPUTS Remote Alarm Aux Relay RANGE UNITS ascii text strings On Off On Off On Off On Off On Off Dirty Clean On Off Alarm Normal On Off On Off On Off On Off...

Page 151: ...scription Location Software Part Number Model Number Serial Number Reference Number Broadcast Supervisory Holiday Start Month Start Day Duration days Occupancy Supervisory Timed Override Hours Period 1 DOW MTWTFSSH Occupied From Occupied To Period 2 DOW MTWTFSSH Occupied From Occupied To Period 3 DOW MTWTFSSH Occupied From Occupied To Period 4 DOW MTWTFSSH Occupied From Occupied To Period 5 DOW MT...

Page 152: ... dF dF dF dF dF dF dF dF dF dF dF dF H20 H20 H20 H20 H20 min SPLO SPHO SPLU SPHU SALO SAHO SALU SAHU RALO RAHO RALU RAHU RRHL RRHH SPL SPH BPL BPH IAQH BLDG CFG BPIDR ATE BLDGP PG BLDGP IG BLDGP DG BPSO BLDGPMIN BLDGPMAX BLDGPFSO PWRM BPSENS BP RANGE BPSP PES1 PES2 BPSELECT BPPERIOD BPZ GAIN BPHPLVL BPLPLVL BP SPT Io alert limit occ SPT hi alert limit occ SPT Io alert limit unocc SPT hi alert limi...

Page 153: ...r Range Adjust Economizer Speed Adjust Economizer Deadband Unoc Econ Free Cool Cfg Unoc Econ Free Cool Time Un Ec Free Cool OAT Lock EDT Reset Configuration Reset Ratio Reset Limit EDT 4 20 ma Reset Input 10 10 20 55 0 600 Yes No Yes No 80 150 Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Enable Disable Yes No 5 30 0 2 1 2 Yes No 0 1 0 8 5...

Page 154: ...tem Gain Air Temp Lvg SF Trim RAT Trim OAT Trim SPT Trim Cir A Sat Cond Temp Trim Cir B Sat Cond Temp Trim Suct Press Circ A Trim Suct Press Circ B Trim Dis Press Circ A Trim Dis Press Circ B Trim Static Press Trim ma Bldg Pressure Trim ma RANGE 0 4 80 120 Yes No Yes No 45 600 10 600 0 4 5 45 0 5 0 5 0 05 0 2 0 20 0 1 5 0 1 5 60 300 0 100 0 100 0 4 0 2 0 2 0 2 0 2 0 100 0 1000 100 2000 0 2000 0 20...

Page 155: ... FAN MODE RMT NCFG CEM BRD min TCSTCOOL min TCSTHEAT SFS SHUT SFS MON min SAMPMINS TONS UNITSIZE DP TRANS SPXRTYPE REFRIG T COILTYPE MAT SEL MATRESET MATOAPOS ALTITUDE sec DE LAY TSTATALL AUXRELAY Space Temp Sensor Space Temp Offset Sensor Space Temp Offset Range Return Air RH Sensor Filter Stat Sw Enabled POINT 01 Definition POINT 02 Definition POINT 03 Definition POINT 04 Definition POINT 05 Def...

Page 156: ...Limit Switch 2 Demand Limit Sw 1 Setpt Demand Limit Sw 2 Setpt 4 20 ma Demand Signal Demand Limit at 20 ma CCN Loadshed Signal Loadshed Group Number Loadshed Demand Delta Maximum Loadshed Time RANGE UNITS ascii ascii ascii ascii ascii ascii ascii ascii On Off On Off ascii Enable Disable Yes No Enable Disable On Off On Off ascii Enable Disable Yes No Enable Disable On Off On Off ascii Enable Disabl...

Page 157: ...ReI Humidity Return Air Enthalpy High OAT Lockout Temp Econ ChangeOver Select OA Enthalpy ChgOvr Selct Outdr Enth Compare Value OA Dewpoint Temp Limit Supply Fan State Economizer Act Cmd Pos Economizer Act Curr Pos Evaporator Discharge Tmp Economizer Control Point EDT Trend in degF minute Economizer Prop Gain Economizer Range Adjust Economizer Speed Adjust Economizer Deadband Economizer Timer RANG...

Page 158: ...upply Air Reset Demand Limit in Effect Temp Compensated Start IAQ pre occ purge active Linkage Active DAV Mech Cooling Locked Out HVAC Mode Numerical Form Current Day Time Date Occupancy Controlled By Currently Occupied Current Occupied Time Current Unoccupied Time Next Occupied Day Time Next Unocc Day Time Last Unocc Day Time Current Occup Period Timed Override in Effect Timed Override Duration R...

Page 159: ...pacity Cap Deadband Subtracting Cap Deadband Adding Cap Threshold Subtracting Cap Threshold Adding High Temp Cap Override Low Temp Cap Override Pull Down Cap Override Slow Change Cap Override Reset All Current Alarms Reset the Device Local Machine Disable Soft Stop Request Emergency Stop CEM AN1 1OK temp J5 1 2 CEM AN2 10K temp J5 3 4 CEM AN3 10K temp J5 5 6 CEM AN4 10K temp J5 7 8 CEM AN1 4 20 ma...

Page 160: ...FF ON OFF ON OFF ON OFF 0 100 ON OFF ON OFF OIMAX ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ascii version ascii version ascii version ascii version ascii version ascii version ascii version POINT NAME CMPA1TST CMPA2TST MLV TST CMP B1TST CMPB2TST SFAN TST SGVF DTST CNDA TST CNDB_TST HTST TST HS1TST HS2TST HS3_TST HS4_TST HS5 TST HS6 TST ECONCTST ECONPTST ECON CAL PE A I ST PE B TST PE...

Page 161: ...e speed to 0 by sending a 4 mA signal to the VFD The A Series units use ABB VFDs The interface wiring for the VFDs is shown in Fig A The VFD connects through an isolation board to the 4 to 20 mA RCB board Terminal designations are shown in Table A Configurations are shown in Table B Table A VFD Terminal Designations TERMINAL FUNCTION Ul V1 Wl Three Phase Main Circuit Input Power Supply U2 V2 Three...

Page 162: ...y is used to change control of the drive to local hand held control The HELP button is used to access the help screens STATUS LED GREEN WHEN NORMAL IF FLASHING RED SEE DIAGNOSTICS SOFT KEY 1 SOFT Fig B VFD Keypad START UP WITH ASSISTANT Initial start up has been performed at the factory To start up the VFD with the Start Up Assistant or reset the VFD with the Carrier defaults perform the following...

Page 163: ...e current time if configured to show the thne The first thne the drive is powered up it is in the OFF mode To switch to local hand held control and control the drive using the control panel press and hold the HAND button Pressing the HAND button switches the drive to hand control while keeping the drive running Press the AUTO button to switch to remote input control To start the drive press the HA...

Page 164: ...CKUP on the display screen and press ENTER SOFT KEY 2 4 Use the UP or DOWN keys to highlight DOWNLOAD TO DRIVE ALL and press SEL SOFT KEY 2 5 The text Restoring Parameters will be displayed with a progress indicator To stop the process select ABORT SOFT KEY 1 6 When the download is complete the text Parameter download successful will be displayed 7 The display will then return to the PAR BACKUP me...

Page 165: ...or if it was on setting an appropriate bit in Fault Word parameter 0305 0307 ALARMS GREEN LED FLASHING For less severe errors called alarms the diagnostic display is advisory For these situations the drive is simply reporting that it had detect ed something unusual In these situations the drive flashes the green LED on the drive does not apply to alarms that arise from control panel operation erro...

Page 166: ...M SPEED parameters 24 OVERSPEED 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...

Page 167: ... be near This alarm warns that the drive is about to perform an automatic fault reset which may start the motor To 2013 AUTORESET control automatic reset use parameter group 31 AUTOMATIC RESET This alarm warns that the PFA autochange function is active To control PFA use parameter group 81 PFA 2014 AUTOCHANGE and the Pump Alternation macro This alarm warns that the PFA interlocks are active which ...

Page 168: ...T The VFD IP 54 UL Type 12 enclosures have an additional internal fan to circulate air inside the enclosure To replace the internal enclosure fan for frame sizes R1 to R4 perform the following see Fig F 1 Remove power from drive 2 Remove the front cover 3 The housing that holds the fan in place has barbed retain ing clips at each corner Press all four clips toward the center to release the barbs 4...

Page 169: ...APPENDIX C E VFD INFORMATION cont 3 5 4 Fig F Internal Enclosure Fan Replacement 169 ...

Page 170: ...ng cooling HVAC modes HVAC mode Off The unit is off and no operating modes are active HVAC mode Tempering Vent The economizer is at minimum vent position but the supply air temperature has dropped below the tempering vent set point Gas heat is used to temper the ventilation air HVAC mode Tempering LoCool The economizer is at minflnum vent position but the combination of the outside air temperature...

Page 171: ...g control 50 Hot gas bypass 75 HVAC modes 33 Independent outputs 30 Indoor air quality control 67 71 INDEX Indoor air quality options 29 Internal wiring 7 Local display tables 140 147 Lubrication 130 Main burners 139 Major system components 101 127 Mode trip helper 91 Modes 32 Multi stage constant volume units with mechanical thermostat 28 Multi stage constant volume units with space sensor 28 Pow...

Page 172: ...n Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480050 01 Printed in U S A Form 48 50A 7T Pg 172 5 08 Replaces 48 50A 6T ...

Page 173: ...Space Temp Sensor Enable Disable Disable _SENS _SP O S Space Temp Offset Sensor Enable Disable Disable _SENS _SP O R Space Temp Offset Range 1 10 5 _SENS _RRH S Return Air RH Sensor Enable Disable Disable _SENS _FLT S Filter Stat Sw Enabled Enable Disable Disable COOL COOLING CONFIGURATION _Z GN Capacity Threshold Adjst 10 10 1 _MC LO Compressor Lockout Temp 20 55 dF 40 _C FOD Fan Off Delay Mech C...

Page 174: ...Pres Reset Config 0 4 multi text strings 0 _SP RT SP Reset Ratio dF 0 2 00 in wg dF 0 2 _SP LM SP Reset Limit in iwc 0 2 00 in wg 0 75 _SP EC SP Reset Econo Position 0 100 5 _S PID STAT PR ESS PID CONFIGS _S PID SP TM Stat Pres PID Run Rate 1 200 sec 2 _S PID SP P Static Press Prop Gain 0 100 20 _S PID SP I Static Pressure Intg Gain 0 50 2 _S PID SP D Static Pressure Derv Gain 0 50 0 _S PID SP SG ...

Page 175: ...ool Off Cool Trend Demand Level Heat Trend Demand Level Cool Trend Time Heat Trend Time DEMAND LIMIT CONFIG Demand Limit Select Demand Limit at 20 ma Loadshed Group Number Loadshed Demand Delta Maximum Loadshed Time Demand Limit Sw 1 Setpt Demand Limit Sw 2 Setpt INDOOR AIR QUALITY CFG DCV ECONOMIZER SETPOINTS Economizer Min Position IAQ Demand Vent Min Pos AIR QUALITY CONFIGS IAQ Analog Sensor Co...

Page 176: ...pt Global Holidays YES NO No _SC OV eO T L Override Time Limit 0 4 HRS 1 _SC OV OVEX Timed Override Hours 0 4 HRS 0 _SC OV eSPT O SPT Override Enabled YES NO Yes _SC OV eT58 0 T58 Override Enabled YES NO Yes _SC OV eGL OV Global Sched Override YES NO No ALLM ALERT LIMIT CONFIG _SP L O SPT Io alert limit occ 10 245 dF 60 _SP H O SPT hi alert limit occ 10 245 dF 85 _SP L U SPT Io alert limit unocc 1...

Page 177: ...Off Open Close Open _DL2 L Dmd Lmt Dehumid Off Open Close Open _IAQ L IAQ Disc Input Low Open Close Open _FSD L Fire Shutdown Off Open Close Open _PRS L Pressurization Sw Off Open Close Open _EVC L Evacuation Sw Off Open Close Open _PRG L Smoke Purge Sw Off Open Close Open DISP DISPLAY CONFIGURATION TEST Test Display LEDs ON OFF Off _METR Metric Display ON OFF Off _LANG Language Selection 0 1 mult...

Page 178: ...ERS HAVE BEEN ON 24 HOURS BEFORE START UP START UP ELECTRICAL SUPPLY VOLTAGE L l L2 COMPRESSOR AMPS COMPRESSOR NO 1 COMPRESSOR AMPS COMPRESSOR NO 2 SUPPLY FANS AMPS CV VAV L2 L3 L3 L1 L1 L2 L3 L1 L2 L3 EXHAUST FAN AMPS VAV fan supply amps reading must be taken with a true RIMS meter for accurate readings F DB Dry Bulb F DB F Vv_B Wet Bulb F F 481 ONLY F 501 ONLY IF EQUIPPED IN WG 48A ONLY STAGE NO...

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