Carrier AQUAZONE 50HQL072-120 Installation, Start-Up And Service Instructions Manual Download

Page: 1 / 44

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

Catalog No. 04-53500034-01

Printed in U.S.A.

Form 50H,V-10SI

Pg 1

7-07

Replaces: 50H,V-9SI

Book 1

Tab

5a 5a

Installation, Start-Up, and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

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

GENERAL

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

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

Step 1 — Check Jobsite

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

Step 2 — Check Unit

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

• STORAGE

• PROTECTION

• INSPECT UNIT

Step 3 — Location of Unit

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

Step 4 — Mounting the Unit

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

• HORIZONTAL UNITS

• VERTICAL UNITS

Step 5 — Duct System

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

• SOUND ATTENUATION

• EXISTING DUCT SYSTEM

Step 6 — Condensate Drain

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

• HORIZONTAL UNITS

• VERTICAL UNITS

• VENTING

Step 7 — Piping Connections

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

• WATER LOOP APPLICATIONS

• GROUND-LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

Step 8 — Field Power Supply Wiring

. . . . . . . . . . . . 12

• POWER CONNECTION

• SUPPLY VOLTAGE

• EXTERNAL LOOP POWER CONNECTION

• 208-VOLT OPERATION

Step 9 — Field Control Wiring

. . . . . . . . . . . . . . . . . . . 14

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-30

System Checkout

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Airflow and External Static Pressure

. . . . . . . . . . . 24

FIELD SELECTABLE INPUTS

. . . . . . . . . . . . . . . 30-33

Complete C Control Jumper Settings

. . . . . . . . . . . 30

Complete C Control DIP Switches

. . . . . . . . . . . . . . 30

Deluxe D Control Jumper Settings

. . . . . . . . . . . . . 30

Deluxe D Control DIP Switches

. . . . . . . . . . . . . . . . 30

Units with Modulating Hot Water Reheat

(HWR) Option

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Deluxe D Control Accessory Relay

Configurations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

START-UP

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

Operating Limits

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

Start Up System

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

Scroll Compressor Rotation

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

Unit Start-Up Cooling Mode

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

Unit Start-Up Heating Mode

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

Page

Flow Regulation

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

Flushing

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

Antifreeze

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

Cooling Tower/Boiler Systems

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

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems

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

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35,36

Power Up Mode

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

Units with Aquazone Complete C Control

. . . . . . . 35

Units with Aquazone Deluxe D Control

. . . . . . . . . . 35

Units with HWR Option

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

SYSTEM TEST

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

Test Mode

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

Retry Mode

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

Aquazone Deluxe D Control LED Indicators

. . . . . 36

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37,38

Filters

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

Water Coil

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

Condensate Drain Pans

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

Refrigerant System

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

Condensate Drain Cleaning

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

Air Coil Cleaning

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

Condenser Cleaning

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

Checking System Charge

. . . . . . . . . . . . . . . . . . . . . . . 38

Refrigerant Charging

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Air Coil Fan Motor Removal

. . . . . . . . . . . . . . . . . . . . . 38

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . . 39-41

Thermistor

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

Control Sensors

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

50HQL,VQL 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™

50HQL072-120

50VQL080-300

Water Source Heat Pump Units

Summary of Contents for AQUAZONE 50HQL072-120

Page 1: ... and Plateframe Heat Exchanger Well Systems 34 OPERATION 35 36 Power Up Mode 35 Units with Aquazone Complete C Control 35 Units with Aquazone Deluxe D Control 35 Units with HWR Option 35 SYSTEM TEST 36 37 Test Mode 36 Retry Mode 36 Aquazone Deluxe D Control LED Indicators 36 SERVICE 37 38 Filters 37 Water Coil 37 Condensate Drain Pans 37 Refrigerant System 37 Condensate Drain Cleaning 37 Air Coil ...

Page 2: ...aser to file all necessary claims with the shipping company 1 Verify unit is correct model for entering water tempera ture of job 2 Be sure that the location chosen for unit installation pro vides ambient temperatures 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...

Page 3: ...20 x 20 2 20 x 25 and 1 20 x 18 FPI Fins per Inch TPI Threads per inch UNIT 50VQL 080 100 120 160 200 240 300 NOMINAL CAPACITY tons 61 2 81 2 10 13 17 20 25 COMPRESSOR S Qty Type 1 Scroll 1 Scroll 1 Scroll 2 Scroll 2 Scroll 2 Scroll 2 Scroll WEIGHTS lb Operating 600 685 735 1120 1265 1350 1465 Shipping 610 695 745 1145 1275 1375 1475 AIR COIL Aluminum Fins Copper Tubes Total Face Area sq ft 9 00 1...

Page 4: ... 2 S 34 1 74 1 PLAN VIEW TOP FRONT FRONT OF UNIT V U Left Return Left View Air Coil Opening 24 Service Access Filter Bracket Shown 24 Service Access 4 2 NOTES 1 All dimensions in inches 2 Flanged filter bracket shipped with unit Leave one end of duct collar open for filter removal 3 All side panels are removable 4 Available in left return straight discharge only 5 Condensate is 3 4 in FPT copper 6...

Page 5: ... should be removed for return duct connection CONNECTIONS Water Outlet 11 4 FPT Water Inlet 11 4 FPT Condensate Drain 3 4 FPT High Voltage Access 7 8 K O Low Voltage Access 7 8 DIA LEGEND BSP Blower Service Panel CAP Control Access Panel CSP Compressor Service Panel 1 2 3 4 5 UNIT 50HQL OVERALL CABINET in DISCHARGE CONNECTIONS in Duct Flange 0 10 in WATER CONNECTIONS in ELECTRICAL KNOCKOUTS in RET...

Page 6: ...l Valve Ball Valve with integral P T plug Stainless steel braid hose with integral J swivel Building Loop Fig 2 Typical Horizontal Installation 50HQL Units T Optional Discharge Supply Air Optional Discharge Access Panel Access Panel Access Panel Access Panel Vibration Pad Control Box Supply Air Supply Water Return Water Balancing Valve Valves Trap Condensate 24 V Remote Mtd Stat Power Supply Disco...

Page 7: ...ions UNIT 50VQL OVERALL CABINET DISCHARGE CONNECTIONS Duct Flange 0 10 in WATER CONNECTIONS ELECTRICAL KNOCKOUTS RETURN AIR CONNECTIONS Using Duct Flange A Width B Depth C Height D Supply Width E Supply Depth F K 1 Water Inlet L 2 Water Outlet M 3 Cond ensate N O P Q R S Return Depth T Return Height U V W 080 100 in 29 0 41 0 71 5 14 7 15 8 11 2 4 0 7 4 14 5 20 5 2 1 20 6 1 0 3 1 34 8 23 4 25 4 3 ...

Page 8: ...HWR Hot Water Reheat NRP Non Removable Panel UNIT 50VQL OVERALL CABINET DISCHARGE CONNECTIONS Duct Flange 0 10 in WATER CONNECTIONS ELECTRICAL KNOCKOUTS RETURN AIR CONNECTIONS Using Duct Flange A Width B Depth C Height D Supply Width E Supply Depth F G K 1 Water Inlet L 2 Water Outlet M 3 Cond ensate N O P Q R S Return Depth T Return Height U V W 160 in 29 0 82 0 71 5 14 7 15 8 19 4 13 8 4 0 7 4 1...

Page 9: ...r Reheat NRP Non Removable Panel Fig 4C 50VQL300 Unit Dimensions UNIT 50VQL OVERALL CABINET DISCHARGE CONNECTIONS Duct Flange 0 10 in WATER CONNECTIONS ELECTRICAL KNOCKOUTS RETURN AIR CONNECTIONS Using Duct Flange A Width B Depth C Height D Supply Width E Supply Depth F G K 1 Water Inlet L 2 Water Outlet M 3 Cond ensate N O P Q R S Return Depth T Return Height U V W 300 in 29 0 82 0 71 5 18 8 16 1...

Page 10: ...or safety See Fig 2 Rod attachments must be able to support the weight of the unit See Table 1 for unit operating weights VERTICAL UNITS 50VQL Vertical units are available in rear or front return air configurations Sound minimization is achieved by enclosing the unit with in a small mechanical room or a closet Additional measures for sound control include the following 1 Mount the unit so that the...

Page 11: ...n there are 3types of WSHP piping systems to choose from water loop ground water and ground loop Refer to the Carrier System Design Manual for additional information All WSHP units utilize low temperature soldered female pipe thread fittings for water connections to prevent annealing and out of round leak problems which are typically associated with high temperature brazed connections Refer to Tab...

Page 12: ...ectrical Data shown in Tables 4 and 5 Make all final electrical connections with a length of flexi ble conduit to minimize vibration and sound transmission to the building POWER CONNECTION Line voltage connection is made by connecting the incoming line voltage wires to the L side of the CC terminal See Tables 4 and 5 for correct wire and maximum overcurrent protection sizing SUPPLY VOLTAGE Operati...

Page 13: ... 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 14: ...conditions need to be considered The valve takes approximately 60 sec onds to open very little water will flow before 45 seconds and it activates the compressor only after the valve is completely opened by closing its end switch When wired as shown the valve will have the following operating characteristics 1 Remain open during a lockout 2 Draw approximately 25 to 35 VA through the Y signal of the...

Page 15: ...ing shown Refer to thermostat installation instructions for wir ing to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut JW1 jumper and dry contact will be avail able between AL1 and AL2 7 Transformer secondary ground via board standoffs and screws to Control Box Ground avail able from top ...

Page 16: ...late open end of VIO lead 4 FP1 thermistor provides freeze protection for WATER When using ANTIFREEZE solution cut JW3 jumper 5 Typical heat pump thermostat wiring shown Refer to thermostat installation instructions for wir ing to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut AL2 DRY JW...

Page 17: ...ith insulating tape 4 FP1 jumper provides freeze protection for WATER When using ANTIFREEZE solutions cut FP1 jumper 5 Typical thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut JW1 jumper and Dry Contact wil...

Page 18: ... thermistor provides freeze protection for WATER When using ANTIFREEZE solutions cut JW3 jumper 5 Typical heat pump thermostat wiring shown Refer to thermostat installation instructions for wir ing to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut AL2 DRY JW4 jumper and dry contact will ...

Page 19: ...freeze protection for WATER When using ANTIFREEZE solution cut FP1 jumper 5 Typical thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut JW1 jumper and Dry Contact will be avail able between AL1 and AL2 7 Trans...

Page 20: ... When using ANTIFREEZE solutions cut JW3 jumper 5 Typical heat pump thermostat wiring shown Refer to thermostat installation instructions for wir ing to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 24 v Alarm Signal shown For Dry Alarm Contact cut AL2 DRY JW4 Jumper and Dry Contact will be available between AL1 and AL2 7 Transformer s...

Page 21: ...lead 4 FP1 thermister provides freeze protection for water When using antifreeze solutions cut JW3 jumper 5 Typical thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 Factory cut JW1 jumper Dry contact will be available between AL1 and AL2 7 Transformer seco...

Page 22: ...lead 4 FP1 thermister provides freeze protection for water When using antifreeze solutions cut JW3 jumper 5 Typical thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 Factory cut JW4 jumper Dry contact will be available between AL1 and AL2 7 Transformer seco...

Page 23: ... 32 1 195 1 1 5 5 8 2 0 39 1 47 1 70 37 9 45 9 70 Large 1 32 1 195 1 2 0 6 2 2 0 40 3 48 3 80 38 3 46 3 70 460 414 506 Standard 1 16 4 95 1 1 5 2 4 1 0 19 8 23 9 40 18 8 22 9 35 Large 1 16 4 95 1 2 0 3 1 1 0 20 5 24 6 40 19 5 23 6 40 575 518 633 Standard 1 12 0 80 1 1 5 1 9 0 8 14 7 17 7 25 13 9 16 9 25 Large 1 12 0 80 1 2 0 2 3 0 8 15 1 18 1 30 14 3 17 3 25 120 208 230 197 253 Standard 1 33 6 225...

Page 24: ... capability higher rpm To adjust sheave position follow the procedure outlined below 1 Loosen belt tension and remove belt 2 Loosen set 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...

Page 25: ...4 1 30 1 37 1 44 1 51 1 57 RPM 667 705 742 779 814 849 884 917 950 983 1015 1046 1078 1108 1138 1168 Turns Open 1 5 1 0 4 5 4 0 3 0 2 5 2 0 1 0 0 5 0 0 3 5 3 0 2 5 2 5 2 0 1 5 2800 BHP 0 81 0 87 0 93 1 00 1 06 1 12 1 19 1 25 1 32 1 39 1 46 1 52 1 60 1 67 1 74 1 81 RPM 729 764 799 833 866 899 931 962 993 1024 1054 1084 1114 1143 1171 1199 Turns Open 5 0 4 0 3 5 3 0 2 0 1 5 1 0 0 5 0 0 3 5 3 0 2 5 2...

Page 26: ...5 3 0 2 5 2 0 1 5 1 0 0 5 0 0 0 0 3 5 3 0 3 0 2 5 4200 BHP 1 84 1 91 1 98 2 04 2 10 2 16 2 22 2 28 2 34 2 40 2 47 2 53 2 59 2 65 2 71 2 77 RPM 1164 1191 1217 1241 1266 1291 1314 1337 1360 1383 1406 1427 1449 1470 1492 1513 Turns Open 4 0 3 5 3 0 2 5 2 5 2 0 1 5 1 0 0 5 0 0 3 5 3 5 3 0 2 5 2 5 2 0 4400 BHP 2 07 2 13 2 20 2 27 2 33 2 40 2 46 2 53 2 60 2 66 2 73 2 79 2 86 2 93 2 99 RPM 1202 1227 1251...

Page 27: ...en 4 5 3 5 3 2 1 4 5 4 3 5 2 5 2 1 5 3 2 5 2 2 3700 BHP 0 78 0 85 0 92 0 99 1 07 1 15 1 23 1 31 1 40 1 48 1 55 1 63 1 70 1 78 RPM 566 600 633 665 696 726 755 783 811 838 864 889 914 939 Turns Open 4 3 5 2 5 1 5 1 4 3 5 3 2 5 4 3 5 3 2 5 2 3900 BHP 0 82 0 89 0 96 1 03 1 10 1 18 1 26 1 35 1 43 1 52 1 62 1 71 1 81 RPM 550 584 616 648 679 709 738 766 794 821 847 873 898 Turns Open 4 5 3 5 3 2 1 5 4 5 ...

Page 28: ...84 1 93 2 03 2 13 2 23 2 33 2 43 2 53 RPM 670 705 740 774 807 840 872 903 934 964 993 1022 1051 1079 1107 1134 Turns Open 1 5 1 4 5 4 3 5 2 5 2 1 5 1 0 5 3 2 5 2 2 1 5 1 5200 BHP 1 36 1 45 1 55 1 64 1 74 1 84 1 94 2 04 2 14 2 24 2 34 2 45 2 55 2 66 2 77 2 87 RPM 708 741 773 805 837 867 898 927 957 985 1013 1041 1069 1096 1122 1149 Turns Open 0 5 4 5 4 3 5 2 5 2 1 5 1 0 5 0 3 2 5 2 1 5 1 0 5 5600 B...

Page 29: ...4 1 53 1 63 1 69 1 74 1 80 RPM 557 592 625 658 689 720 750 778 806 833 860 886 911 935 959 Turns Open 4 5 3 5 2 5 2 1 4 5 4 3 2 5 2 1 5 1 0 5 0 2 7600 BHP 0 83 0 90 0 97 1 05 1 12 1 20 1 29 1 37 1 46 1 55 1 65 1 75 1 85 1 95 2 06 RPM 575 608 640 672 702 732 760 788 816 842 868 894 918 943 966 Turns Open 4 3 2 5 1 5 4 5 4 3 5 3 2 5 2 1 5 1 0 5 2 1 5 8000 BHP 0 87 0 94 1 01 1 09 1 16 1 24 1 33 1 41 ...

Page 30: ...elay terminal AL2 to 24 vac R or to remain as a dry contact no connection To connect AL2 to R do not clip the jumper To set as dry contact clip the jumper LOW PRESSURE SETTING The Deluxe D Control can be configured for Low Pressure Setting LP Select jumper 1 JW1 LP Norm Open for choosing between low pressure in put normally opened or closed To configure for normally closed operation do not clip th...

Page 31: ...IP Switch Block S2 Accessory 2 Relay Options LEGEND NOTE All other switch combinations are invalid Units with Modulating Hot Water Reheat HWR Option A heat pump equipped with Hot Water Reheat HWR can operate in three modes cooling cooling with reheat and heating The cooling heating modes are like any other Aquazone water source heat pump The reversing valve O signal is energized in cooling along w...

Page 32: ...this configura tion the relay will be ON if the NSB input is connected to ground C NOTE If there are no relays configured for digital NSB then the NSB and override OVR inputs are automatically config ured for mechanical operation MECHANICAL NIGHT SET BACK When NSB input is connected to ground C all thermostat inputs are ignored A thermostat set back heating call will then be connected to the OVR i...

Page 33: ...internal overload protection will open thus activating the unit lockout This requires a manual reset To reset turn the thermostat on and then off NOTE There is a 5 minute time delay before the compressor will start Unit Start Up Cooling Mode 1 Adjust the unit thermostat to the warmest position Slowly reduce the thermostat position until the compres sor activates 2 Check for cool air delivery at un...

Page 34: ...d to ensure the motor housing has been flood ed Be sure the loop flow center provides adequate flow through the unit by checking pressure drop across the heat exchanger Antifreeze In areas where entering loop temperatures drop below 40 F or where piping will be routed through ar eas subject to freezing antifreeze is needed Alcohols and glycols are commonly used as antifreeze agents Freeze protecti...

Page 35: ...g Heat Stage 3 demand EH2 will turn on after 10 minutes EH1 and EH2 are turned off immediately when the Heating Stage 3 demand is removed The control reverts to Heating Stage 2 mode Output EH2 will be off if FP1 is greater than 45 F AND FP2 when shorted is greater than 110 F during Heating Stage 3 mode This condition will have a 30 second recognition time Also during Heating Stage 3 mode EH1 EH2 F...

Page 36: ...t mode The Test LED light is yellow FAULT LED Fault LED light is red The fault LED will always flash a code representing the last fault in memory If there is no fault in memory the fault LED will flash code 1 on the and appear as 1 fast flash alternating with a 10 second pause See Table 26 Table 24 Complete C Control Current LED Status and Alarm Relay Operations LEGEND NOTES 1 Slow flash is 1 flas...

Page 37: ... from this unit must be recovered without exception Technicians must fol low industry accepted guidelines and all local state and fed eral statutes for the recovery and disposal of refrigerants IMPORTANT To avoid the release of refrigerant into the atmosphere the refrigerant circuit of this unit must only be serviced by technicians which meet local state and federal proficiency requirements IMPORT...

Page 38: ...pressure gage to discharge line near compressor 3 After unit conditions have stabilized read head pressure on discharge line gage NOTE Operate unit a minimum of 15 minutes before checking charge 4 From standard field supplied Pressure Temperature chart for R 22 find equivalent saturated condensing temperature 5 Read liquid line temperature on thermometer then subtract from saturated condensing tem...

Page 39: ... protection Be sure FP1 is located in the discharge fluid and FP2 is located in the air discharge See Fig 19 0 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 0 0 20 0 40 0 60 0 80 0 100 0 120 0 140 0 Temperature degF Resistance kOhm Fig 18 Thermistor Nominal Resistance a50 8163 SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE FP2 FP1 LIQUID LINE WATER IN WATER OUT CONDENSATE OVERFLOW CO AIR COIL ...

Page 40: ... high external static Check Tables 6 16 X Air temperature out of range Too much cold vent air Bring entering air temperature within design parameters X Improper freeze protect set ting 30 F vs 10 F Normal airside applications will require 30 F only X X Bad thermistor Check temperature and impedance correlation Condensate Fault Code 6 X X Blocked drain Check for blockage and clean drain X X Imprope...

Page 41: ...ump 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 Too high external static Check blower Tables 6 16 X Reduced or no wa...

Page 42: ...inue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500034 01 Printed in U S A Form 50H V 10SI Pg 42 7 07 Replaces 50H V 9SI Book 1 4 Tab 5a 5a Copyright 2007 Carrier Corporation ...

Page 43: ...NS 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 P...

Page 44: ...NALYSIS COOLING CYCLE ANALYSIS HEAT OF EXTRACTION ABSORPTION OR HEAT OF REJECTION FLOW RATE GPM x TEMP DIFF DEG F x FLUID FACTOR Btu hr SUPERHEAT SUCTION TEMPERATURE SUCTION SATURATION TEMPERATURE DEG F SUBCOOLING DISCHARGE SATURATION TEMPERATURE LIQUID LINE TEMPERATURE DEG F Use 500 for water 485 for antifreeze SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE F F AIR COIL F PSI WATER OUT WATER I...

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