Carrier AQUAZONE 50VQP084-300 Installation And Service Instructions Manual Download

Page: 1 / 48

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500080-01

Printed in U.S.A.

Form 50VQP-C1SI

Pg 1

11-10

Replaces: New

Installation, Start-Up, and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . .1,2

GENERAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Step 1 — Check Jobsite

. . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2 — Check Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . 2

• STORAGE

• PROTECTION

• INSPECT UNIT

Step 3 — Locate Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 4 — Mount the Unit

. . . . . . . . . . . . . . . . . . . . . . . . . 6

• DISCHARGE CONFIGURATION CONVERSION

• CONTROL BOX/MOTOR ACCESS

CONFIGURATION CONVERSION

Step 5 — Check Duct System

. . . . . . . . . . . . . . . . . . . . 9

• SOUND ATTENUATION

• EXISTING DUCT SYSTEM

Step 6 — Install Condensate Drain

. . . . . . . . . . . . . . . 9

• VENTING

Step 7 — Pipe Connections

. . . . . . . . . . . . . . . . . . . . . 10

• WATER LOOP APPLICATIONS

• GROUND-LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

Step 8 — Wire Field Power Supply

. . . . . . . . . . . . . . 11

• POWER CONNECTION

• SUPPLY VOLTAGE

• 420-VOLT OPERATION

Step 9 — Wire Field Controls

. . . . . . . . . . . . . . . . . . . . 17

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-32

System Checkout

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Airflow and External Static Pressure

. . . . . . . . . . . 18

FIELD SELECTABLE INPUTS

. . . . . . . . . . . . . . . .33,34

Complete C Control Jumper Settings

. . . . . . . . . . . 33

Complete C Control DIP Switches

. . . . . . . . . . . . . . 33

Deluxe D Control Jumper Settings

. . . . . . . . . . . . . 33

Deluxe D Control DIP Switches

. . . . . . . . . . . . . . . . 33

Deluxe D Control Accessory Relay

Configurations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-36

Operating Limits

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Start Up System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Scroll Compressor Rotation

. . . . . . . . . . . . . . . . . . . . . 34

Unit Start-Up Cooling Mode

. . . . . . . . . . . . . . . . . . . . . 35

Unit Start-Up Heating Mode

. . . . . . . . . . . . . . . . . . . . . 35

Flow Regulation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Flushing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Page

Antifreeze

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Cooling Tower/Boiler Systems

. . . . . . . . . . . . . . . . . . 36

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems

. . . . . . . . . . . . . . . . 36

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37

Power Up Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Units with Aquazone Complete C Control

. . . . . . . 37

Units with Aquazone Deluxe D Control

. . . . . . . . . . 37

COMPLETE C AND DELUXE D BOARD

SYSTEM TEST

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-39

Test Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Retry Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Aquazone Deluxe D Control LED Indicators

. . . . . 39

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39,40

Filters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Water Coil

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condensate Drain Pans

. . . . . . . . . . . . . . . . . . . . . . . . . 39

Refrigerant System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condensate Drain Cleaning

. . . . . . . . . . . . . . . . . . . . . 39

Air Coil Cleaning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condenser Cleaning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Checking System Charge

. . . . . . . . . . . . . . . . . . . . . . . 40

Refrigerant Charging

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Air Coil Fan Motor Removal

. . . . . . . . . . . . . . . . . . . . . 40

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . . 40-43

Thermistor

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Control Sensors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

50VQP START-UP CHECKLIST

. . . . . . . . . . . CL-1,CL-2

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other

operations should be performed by trained service personnel.

When working on air-conditioning equipment, observe precau-

tions in the literature, tags and labels attached to the unit, and

other safety precautions that may apply.

Improper installation, adjustment, alteration, service, main-

tenance, or use can cause explosion, fire, electrical shock or

other conditions which may cause personal injury or property

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The

qualified installer or agency must use factory-authorized kits or

accessories when modifying this product. Refer to the individ-

ual instructions packaged with the kits or accessories when

installing.

IMPORTANT: Read the entire instruction manual before

starting installation.

AQUAZONE™

50VQP084-300

Vertical Large Capacity Water Source Heat Pumps

with PURON

Refrigerant (R-410A)

50 Hz

Summary of Contents for AQUAZONE 50VQP084-300

Page 1: ...er Up Mode 36 Units with Aquazone Complete C Control 37 Units with Aquazone Deluxe D Control 37 COMPLETE C AND DELUXE D BOARD SYSTEM TEST 37 39 Test Mode 37 Retry Mode 39 Aquazone Deluxe D Control LED Indicators 39 SERVICE 39 40 Filters 39 Water Coil 39 Condensate Drain Pans 39 Refrigerant System 39 Condensate Drain Cleaning 39 Air Coil Cleaning 39 Condenser Cleaning 39 Checking System Charge 40 R...

Page 2: ...res maintained above freezing Well water applications are especially susceptible to freezing 3 Be sure the installation location is isolated from sleeping areas private offices and other acoustically sensitive spaces NOTE A sound control accessory package may be used to help eliminate sound in sensitive spaces 4 Check local codes to be sure a secondary drain pan is not required under the unit 5 Be...

Page 3: ...29 24 08 27 98 CONDENSATE CONNECTION SIZE FPT in mm 1 25 4 AIR COIL DATA Air Coil Dimensions H x W cm 91 4 x 121 9 91 4 x 121 9 Air Coil Total Face Area sq m 1 11 2 22 Air Coil Tube Size cm 3 8 0 953 Air Coil Fin Spacing fins per cm 5 5 4 72 5 5 4 72 Air Coil Number of Rows 2 3 4 2 3 4 MISCELLANEOUS DATA Filter Standard Throwaway qty cm 4 45 74 x 63 5 x 2 5 8 45 74 x 63 5 x 2 5 Weight Operating kg...

Page 4: ...ovable panels is not required installer should take care to comply with all building codes and allow adequate clearance for future field service 7 Water inlet and water outlet connections are available on either side left or right of the unit Two MPT plugs are shipped loose in a plastic bag tied to the water leg in front of the unit Installer must plug water inlet outlet side not being connected t...

Page 5: ...ly with all building codes and allow adequate clearance for future field service 7 Water inlet and water outlet connections are available on either side left or right of the unit Two MPT plugs are shipped loose in a plastic bag tied to the water leg in front of the unit Installer must plug water inlet outlet side not being connected to 8 Condensate drain is available on either side left or right o...

Page 6: ...4 4 C and 37 8 C and relative humidity is no greater than 75 Provide sufficient space for water electrical and duct connections NOTE Water inlets outlets and high low voltage electrical access are available on either side of the unit Electrical ac cess is also available on the unit front See Fig 2 and 3 Locate unit in an area that allows for easy access and removal of filter and access panels NOTE...

Page 7: ...he blower assembly back so the blower panel is flush with the unit See Fig 11 9 Attach blower assembly with 4 bolts as shown in Fig 12 10 Remove the 2 blower glides and reattach back into com pressor section See Fig 13 11 Use four 1 4 in 6 mm 20 UNC bolts 2 bolts on each side to bolt blower assembly to blower bottom load brackets Reattach belt and tighten See Fig 14 Fig 7 Remove Bolts and Blower G...

Page 8: ...t of the unit to the back of the unit follow the procedure below To change the configuration of the control box motor access from the back of the unit to the front of the unit reverse the procedure below 1 Remove the 3 panels as shown in Fig 17 2 Remove motor cover and control box cover as shown in Fig 18 3 Remove 4 screws from control box Using the guide rails as a guide flip the control box down...

Page 9: ... changed in the field to reduce air noise or excessive air flow provided system performance is not adversely impacted EXISTING DUCT SYSTEM If the unit is connected to existing ductwork consider the following Verify that the existing ducts have the proper capacity to handle the unit airflow If the ductwork is too small larger ductwork should be installed Check existing ductwork for leaks and repair...

Page 10: ...in the case where fluid in loop piping operates at temperatures below dew point of adjacent air Piping systems that contain steel pipes or fittings may be subject to galvanic corrosion Dielectric fittings may be used to isolate the steel parts of the system to avoid galvanic corrosion WATER LOOP APPLICATIONS Water loop applications usually include a number of units plumbed to a common pip ing syst...

Page 11: ...TION Line voltage connection is made by connecting the incoming line voltage wires to the L side of the CC terminal See Tables 3 and 4 for correct wire and maximum overcurrent protection sizing SUPPLY VOLTAGE Operating voltage to unit must be within voltage range indicated on unit nameplate On 3 phase units voltages under load between phases must be balanced within 2 Use the following formula to d...

Page 12: ... Saturation Index All N A 0 5 to 0 5 If 0 5 minimize steel pipe use Based upon 150 F HWG and direct well 85 F indirect well HX Iron Fouling Iron Fe2 Ferrous Bacterial Iron Potential All N A 0 2 ppm Ferrous If Fe2 ferrous 0 2 ppm with pH 6 8 O2 5 ppm check for iron bacteria Iron Fouling All N A 0 5 ppm of Oxygen Above this level deposition will occur Corrosion Prevention pH All 6 8 5 Monitor treat ...

Page 13: ...econdary ground via Complete C board standoffs and screws to control box Ground available from top two standoffs as shown 8 For dual point power option blower wires 3 qty will go to PDB2 only AL Alarm Relay BC Blower Contactor CB Circuit Breaker CC Compressor Contactor CO Sensor Condensate Overflow DPP Dual Point Power DS Disconnect Switch FP1 Sensor Water Coil Freeze Protection FP2 Sensor Air Coi...

Page 14: ...trol box Ground available from top two standoffs as shown 8 For dual point power option blower wires 3 qty will go to PDB2 only AL Alarm Relay BC Blower Contactor CB Circuit Breaker CC Compressor Contactor CO Sensor Condensate Overflow DPP Dual Point Power DS Disconnect Switch FP1 Sensor Water Coil Freeze Protection FP2 Sensor Air Coil Freeze Protection HP High Pressure Switch HPWS High Pressure W...

Page 15: ...L W T LEGEND NOTE Reversing valve is on in Cooling mode CR Control Relay LWT Leaving Water Temperature Sensor SAT Supply Air Temperature Sensor SPT Space Temperature Sensor Fig 30 PremierLink Controller Applications with Deluxe D Control LEGEND NOTE Reversing valve is on in Cooling mode LWT Leaving Water Temperature Sensor SAT Supply Air Temperature Sensor SPT Space Temperature Sensor Fig 29 Premi...

Page 16: ...8 6 118 0 12 2 49 4 54 0 70 FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration LRA Locked Rotor Amps MCA Minimum Circuit Amps RLA Rated Load Amps 50VQP UNIT SIZE VOLTAGE V Ph Hz MIN MAX VOLTAGE BLOWER OPTION COMPRESSOR EMERGENCY POWER SUPPLY qty RLA LRA TOTAL COMP FLA COMP MCA COMP MAX FUSE FAN MOTOR FLA FAN MCA FAN MAX FUSE 084 380 420 3 50 360 440 A B C 1 11 2 75 0 11 2 14 0 25 1...

Page 17: ... on ly on valves with end switches Only relay or triac based elec tronic thermostats should be used with slow closing valves When wired as shown the slow closing valve will operate properly with the following notations 1 The valve will remain open during a unit lockout 2 The valve will draw approximately 25 to 35 VA through the Y signal of the thermostat PRE START UP System Checkout When the insta...

Page 18: ...et screw on fan motor 3 Open sheave to desired position 4 Retighten set screw and replace belt NOTE Set belt tension as outlined below BELT TENSION ADJUSTMENT An overly loose belt will upon starting motor produce a slippage squeal and cause premature belt failure and or intermittent airflow An overly tight belt can cause premature motor or blower bear ing failure To adjust the belt tension follow ...

Page 19: ...pen 4 5 2 5 5 4 5 3 1 5 5 5 4 5 3 5 2 5 1 5 1 1038 4 BkW 0 17 0 21 0 24 0 25 0 29 0 33 0 37 0 40 0 44 0 48 0 52 0 55 Sheave Mtr B B A A A A C C C C C C RPM 375 424 467 507 548 584 621 653 684 716 743 772 Turns Open 4 2 5 4 2 5 1 5 5 4 5 3 5 2 5 1 5 1 1085 6 BkW 0 18 0 22 0 25 0 29 0 33 0 37 0 40 0 44 0 48 0 52 0 55 Sheave Mtr B B A A A A C C C C C RPM 387 435 476 518 555 590 627 659 692 721 751 Tu...

Page 20: ... 37 0 40 0 44 0 48 0 52 0 55 Sheave Mtr B B A A A A A C C C C C RPM 375 424 467 507 548 584 621 653 684 716 743 772 Turns Open 4 2 5 4 5 3 1 5 1 4 5 3 5 2 5 2 1 1085 6 BkW 0 16 0 18 0 22 0 25 0 29 0 33 0 37 0 40 0 44 0 48 0 52 0 55 Sheave Mtr B B A A A A A C C C C C RPM 339 387 435 476 518 555 590 627 659 692 721 751 Turns Open 5 3 5 6 5 4 2 5 1 5 5 5 4 5 3 2 5 1 5 1132 8 BkW 0 18 0 22 0 25 0 29 0...

Page 21: ...0 33 0 40 0 44 0 48 0 52 0 55 0 63 0 67 0 70 0 74 0 78 Sheave Mtr B A A A A A C C C C C RPM 421 459 499 533 569 600 633 663 691 722 749 Turns Open 2 5 5 4 3 2 1 5 4 3 2 1 5 1510 4 BkW 0 37 0 40 0 48 0 52 0 55 0 63 0 67 0 70 0 74 0 78 0 85 Sheave Mtr A A A A A A C C C C C RPM 441 478 513 549 581 614 644 672 703 730 759 Turns Open 6 5 4 2 5 1 5 1 4 5 3 5 2 5 2 1 5 1557 6 BkW 0 40 0 48 0 52 0 55 0 62...

Page 22: ... 0 78 0 82 0 90 Sheave Mtr B B B A A A A A A C C C C C C C RPM 377 421 462 501 534 569 603 636 668 698 728 757 785 812 838 860 Turns Open 6 4 5 3 6 5 4 3 2 1 6 5 4 3 5 2 5 1 5 1 1368 8 BkW 0 30 0 33 0 37 0 40 0 45 0 48 0 52 0 55 0 63 0 67 0 70 0 75 0 78 0 85 0 90 0 93 Sheave Mtr B B B A A A A A A C C C C C C C RPM 395 438 478 515 547 582 615 647 678 708 737 765 793 819 845 868 Turns Open 5 5 4 2 5...

Page 23: ...5 589 618 646 676 702 728 753 779 803 827 850 875 898 Turns Open 4 5 3 5 2 5 1 5 6 6 5 4 3 5 2 5 2 1 0 5 0 1888 0 BkW 0 78 0 82 0 85 0 93 1 00 1 08 1 11 1 15 1 23 1 30 1 34 1 38 1 50 1 53 Sheave Mtr A A A A C C C C C C C C E E RPM 572 601 630 657 686 712 737 762 789 812 836 859 883 905 Turns Open 4 3 2 1 6 5 5 4 5 4 3 2 5 1 5 1 0 0 1935 2 BkW 0 85 0 89 0 93 1 00 1 08 1 11 1 15 1 23 1 30 1 38 1 41 ...

Page 24: ...4 5 3 5 3 1604 8 BkW 0 48 0 52 0 57 0 63 0 67 0 75 0 82 0 85 0 93 1 00 1 08 1 15 1 20 Sheave Mtr B B A A A A A A C C C C C RPM 537 576 612 643 676 705 736 763 793 823 850 880 908 Turns Open 5 5 4 5 5 5 4 3 2 1 6 5 4 5 3 5 2 5 1652 0 BkW 0 52 0 57 0 60 0 67 0 75 0 78 0 85 0 93 1 00 1 05 1 12 1 20 1 23 Sheave Mtr B B A A A A A A C C C C C RPM 551 589 622 655 685 716 746 776 802 829 858 886 913 Turns...

Page 25: ... 00 1 08 1 15 1 23 1 30 1 38 1 45 1 53 1 60 1 68 1 75 1 83 1 90 1 97 Sheave Mtr A A A A A A A C C C C C C C C RPM 605 637 666 697 727 755 783 809 835 858 882 905 928 951 973 Turns Open 6 5 4 3 2 5 1 5 1 5 5 5 4 3 5 2 5 2 1 5 1 2265 6 BkW 1 00 1 08 1 15 1 23 1 30 1 38 1 45 1 53 1 60 1 68 1 75 1 83 1 90 1 97 2 05 Sheave Mtr A A A A A A C C C C C C C C C RPM 618 647 678 708 738 766 793 819 844 867 89...

Page 26: ... 678 710 737 764 Turns Open 6 5 3 5 2 5 3 5 3 2 1 2 5 2 1 2076 8 BkW 0 34 0 42 0 47 0 51 0 58 0 66 0 73 0 81 0 88 0 96 1 03 1 11 Sheave Mtr B B B B A A A A C C C C RPM 375 424 467 507 548 584 621 653 684 716 743 772 Turns Open 6 4 5 3 1 5 4 5 3 5 2 5 1 5 3 5 2 5 1 5 1 2171 2 BkW 0 36 0 43 0 51 0 58 0 66 0 73 0 81 0 88 0 96 1 03 1 11 Sheave Mtr B B B B A A A A C C C RPM 387 435 476 518 555 590 627 ...

Page 27: ...3 772 Turns Open 6 4 5 3 1 5 5 3 5 2 5 1 5 3 5 2 5 1 5 1 2171 2 BkW 0 36 0 43 0 51 0 58 0 66 0 73 0 81 0 88 0 96 1 03 1 11 Sheave Mtr B B B A A A A A C C C RPM 387 435 476 518 555 590 627 659 692 721 751 Turns Open 6 4 3 6 4 5 3 5 2 5 1 5 3 2 5 1 5 2265 6 BkW 0 43 0 51 0 58 0 66 0 73 0 81 0 88 0 96 1 03 1 11 1 18 Sheave Mtr B B B A A A A A C C C RPM 403 446 485 527 563 600 633 665 697 726 756 Turn...

Page 28: ... 459 499 533 569 600 633 663 691 722 749 Turns Open 4 5 3 5 2 5 4 3 2 1 2 5 2 1 5 3020 8 BkW 0 73 0 81 0 96 1 03 1 11 1 26 1 33 1 41 1 48 1 56 1 71 Sheave Mtr B B A A A A A C C C C RPM 441 478 513 549 581 614 644 672 703 730 759 Turns Open 4 2 5 6 4 5 3 5 3 1 5 3 5 2 5 2 1 3115 2 BkW 0 81 0 96 1 03 1 11 1 24 1 33 1 41 1 48 1 56 1 71 1 84 Sheave Mtr B B A A A A A C C C C RPM 456 495 529 561 595 625...

Page 29: ... A A A A A C C C C C C RPM 438 478 515 547 582 615 647 678 708 737 765 793 819 845 868 Turns Open 6 4 5 3 5 5 4 5 3 5 3 2 1 5 4 2 244 1 87 1 122 0 748 2832 0 BkW 0 73 0 81 0 88 0 96 1 03 1 11 1 26 1 33 1 41 1 56 1 63 2 28 2 38 2 48 2 68 Sheave Mtr B B B A A A A A A C C C C C C RPM 453 491 529 563 595 626 659 689 717 745 774 801 826 851 877 Turns Open 5 5 4 2 5 5 5 4 5 3 5 2 5 1 5 1 4 5 3 5 2 244 1...

Page 30: ... 2 23 2 30 2 45 2 60 2 68 2 75 2 90 3 05 Sheave Mtr A A A A A A C C C C C C C C RPM 572 601 630 657 686 712 737 762 789 812 836 859 883 905 Turns Open 5 4 3 2 5 1 5 1 4 5 4 3 2 5 1 5 1 0 5 0 3870 4 BkW 1 71 1 78 1 86 2 00 2 15 2 23 2 30 2 45 2 60 2 75 2 83 2 90 3 05 Sheave Mtr A A A A A C C C C C C C C RPM 589 617 645 672 700 726 751 775 801 824 847 872 894 Turns Open 4 5 3 5 3 2 1 5 4 5 3 5 2 5 2...

Page 31: ... 599 631 664 694 725 756 784 815 845 874 Turns Open 6 4 5 3 6 5 4 3 1 5 1 2 1 0 5 3209 6 BkW 0 96 1 05 1 14 1 26 1 35 1 50 1 65 1 71 1 86 2 68 2 88 3 08 Sheave Mtr B B B A A A A A A C C C RPM 537 576 612 643 676 705 736 763 793 823 850 880 Turns Open 5 5 4 2 5 5 5 4 5 3 5 2 5 1 5 0 5 2 1 0 5 3304 0 BkW 1 05 1 14 1 20 1 35 1 50 1 56 1 71 1 86 2 00 2 80 3 00 3 20 Sheave Mtr B B B A A A A A A C C C R...

Page 32: ... A A A A A A C C C C RPM 598 623 656 687 715 744 772 799 825 850 872 896 Turns Open 3 5 2 5 5 4 3 2 5 1 0 5 2 1 5 1 0 4436 8 BkW 1 86 2 00 2 15 2 30 2 45 2 60 2 75 2 90 3 05 3 20 3 35 Sheave Mtr B A A A A A A A C C C RPM 605 637 666 697 727 755 783 809 835 858 882 Turns Open 3 6 5 4 3 2 1 0 2 1 5 0 5 4531 2 BkW 2 00 2 15 2 30 2 45 2 60 2 75 2 90 3 05 3 20 3 35 3 50 Sheave Mtr B A A A A A A C C C C...

Page 33: ...N To disable the PM set the switch to OFF Compressor Relay Staging Operation Switch 2 will enable or disable compressor relay staging operation The compressor relay can be set to turn on with stage 1 or stage 2 call from the thermostat This setting is used with dual stage units units with 2 compressors and 2 Deluxe D controls or in master slave ap plications In master slave applications each compr...

Page 34: ... installation ONLY Extreme variations in temperature humidi ty and corrosive water or air will adversely affect the unit per formance reliability and service life POWER SUPPLY A voltage variation of 10 of name plate utilization voltage is acceptable UNIT STARTING CONDITIONS All units start and op erate in an ambient of 7 2 C with entering air at 4 4 C entering water at 6 7 C and with both air and ...

Page 35: ...perating Air temperature rise should be between 11 C and 17 C after 15 minutes at load 7 Check for vibration noise and water leaks Flow Regulation Flow regulation can be accom plished by two methods Most water control valves have a flow adjustment built into the valve By measuring the pressure drop through the unit heat exchanger the flow rate can be deter mined using Table 17 Adjust the water con...

Page 36: ...e 12 2 C set point to avoid nuisance faults Table 18 Approximate Fluid Volume L per 30 M of Pipe LEGEND NOTE Volume of heat exchanger is approximately 3 78 liters Table 19 Antifreeze Percentages by Volume Cooling Tower Boiler Systems These systems typically use a common loop maintained at 15 6 C to 32 2 C The use of a closed circuit evaporative cooling tower with a secondary heat exchanger between...

Page 37: ...H1 and EH2 are turned off immediately when the Heating Stage 3 demand is re moved The control reverts to Heating Stage 2 mode Output EH2 will be off if FP1 is greater than 7 2 C and FP2 when shorted is greater than 48 9 C during Heating Stage 3 mode This condition will have a 30 second recognition time Also during Heating Stage 3 mode EH1 EH2 Fan Enable and Fan Speed will be ON if G input is not a...

Page 38: ...st power down to power up sequence 2 High Pressure Switch HP Open Instantly 3 Low Pressure Switch LP open for 30 continuous seconds before or during a call bypassed for first 60 seconds 4 Freeze Protection Coax FP1 FP1 below Temp limit for 30 continu ous seconds bypassed for first 60 seconds of operation 5 Freeze Protection Air Coil FP2 FP2 below Temp limit for 30 continu ous seconds bypassed for ...

Page 39: ...ening mashed or bent coil fins Condenser Cleaning Water cooled condensers may require cleaning of scale water deposits due to improperly maintained closed loop water systems Sludge build up may need to be cleaned in an open water tower system due to induced contaminants Local water conditions may cause excessive fouling or pitting of tubes Condenser tubes should therefore be cleaned at least once ...

Page 40: ...ket assembly to extreme right and lift out through space between fan scroll and side frame Rest motor on a high platform such as a step ladder Do not allow motor to hang by its power wires TROUBLESHOOTING When troubleshooting problems with a WSHP see Table 23 Thermistor A thermistor may be required for single phase units where starting the unit is a problem due to low voltage See Fig 38 for thermi...

Page 41: ...X Coaxial Heat Exchanger Airflow Refrigerant Liquid Line Flow SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE FP2 FP1 LIQUID LINE WATER IN WATER OUT CONDENSATE OVERFLOW CO AIR COIL FREEZE PROTECTION WATER COIL PROTECTION THERMISTOR C C AIR COIL AIRFLOW AIRFLOW ...

Page 42: ...r replace Check fan motor operation and airflow restrictions High external static Check duct design and downstream interference X Air temperature out of range Too much cold vent air Bring entering air temperature within design parameters X Improper freeze protect set ting 1 1 C vs 12 2 C Normal airside applications will require 1 1 C only X X Bad thermistor Check temperature and impedance correlat...

Page 43: ...ensible cooling load and heat pump capacity X X Scaling in water heat exchanger Perform scaling check and clean if necessary X X Inlet water too hot or cold Check load loop sizing loop backfill ground moisture High Head Pressure X Reduced or no airflow in heating Check for dirty air filter and clean or replace Check fan motor operation and airflow restrictions High external static Check duct desig...

Page 44: ......

Page 45: ......

Page 46: ...t to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500080 01 Printed in U S A Form 50VQP C1SI Pg 46 11 10 Replaces New Copyright 2010 Carrier Corporation ...

Page 47: ...S BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER Y N HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN Y N HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED Y N IS AN AIR FILTER INSTALLED Y N II START UP IS FAN OPERATING WHEN COMPRESSOR OPERATES Y N IF 3 PHASE SCROLL COMPRESSOR IS PRESENT VERIFY PROPER ROTATION PER INSTRUCTIONS Y N UNIT VOLTAGE COOLING OPERATION PHASE AB VOLTS PH...

Page 48: ...kW SUPERHEAT SUCTION TEMPERATURE SUCTION SATURATION TEMPERATURE DEG C SUBCOOLING DISCHARGE SATURATION TEMPERATURE LIQUID LINE TEMPERATURE DEG C Use 500 for water 485 for antifreeze SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE C C AIR COIL C kPa WATER OUT WATER IN C kPa LOOK UP PRESSURE DROP IN TABLE 8 TO DETERMINE FLOW RATE C LIQUID LINE kPa C DEW POINT LOOK UP PRESSURE DROP IN TABLE 17 TO DE...

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Carrier AQUAZONE 50VQP084-300, Installation And Service Instructions Manual

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