Carrier Aquazone 50HQL Installation, Start-Up And Service Instructions Manual
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Carrier Aquazone 50HQL Installation, Start-Up And Service Instructions Manual

Carrier Aquazone 50HQL Installation, Start-Up And Service Instructions Manual

Water source heat pump units
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Step 1 - Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 - Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• STORAGE
• PROTECTION
Step 3 - Location of Unit . . . . . . . . . . . . . . . . . . . . . . . 10
Step 4 - Mounting the Unit . . . . . . . . . . . . . . . . . . . . . 10
Step 5 - Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 6 - Condensate Drain . . . . . . . . . . . . . . . . . . . . . 11
• VENTING
Step 7 - Piping Connections . . . . . . . . . . . . . . . . . . . 12
Step 8 - Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . 12
Step 9 - Low Voltage Wiring. . . . . . . . . . . . . . . . . . . . 28
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . 28-30
C Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 28
C Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 28
D Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 28
D Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 29
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-32
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Start Up System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 31
Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 31
Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 31
Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Book 1
4
Tab
5a 5a
Installation, Start-Up, and
Service Instructions
Page
Catalog No. 535-00096
Printed in U.S.A.

Water Source Heat Pump Units

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 32
Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 32
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32,33
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33,34
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34,35
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 34
Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 34
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 35
Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 35
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 36-38
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1, CL-2
IMPORTANT: Read the entire instruction manual before
starting installation.

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.
Form 50H,V-9SI
Pg 1
TM
50HQL,VQL
Page
6-03
Replaces: 50H,V-8SI

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Summary of Contents for Carrier Aquazone 50HQL

  • Page 1: Table Of Contents

    Water Source Heat Pump Units 50HQL,VQL Installation, Start-Up, and Service Instructions CONTENTS Page Flushing ........31 Page Antifreeze .

  • Page 2: General

    Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and To avoid equipment damage, do not use these units as a follow all warnings or cautions attached to the unit. Consult source of heating or cooling during the construction local building codes and the National Electrical Code (NEC) process.
  • Page 3 Table 1 — Physical Data — 50HQL072-120 Units UNIT 50HQL NOMINAL CAPACITY (tons) COMPRESSOR(S)* Scroll WEIGHT (lb) Operating Shipping AIR COIL Aluminum Fins, Copper Tubes Total Face Area (sq ft) 6.66 8.33 8.33 Tube Size (in.) Fin Spacing (FPI) Number of Rows REFRIGERANT CHARGE†...
  • Page 4 CONNECTIONS LEFT RETURN STRAIGHT DISCHARGE ″ FPT Water Outlet ″ FPT Water Inlet 24” Service ″ FPT Condensate Drain Access LEFT INLET ″ [2.2] K.O. High Voltage Access ″ [2.2] K.O. Low Voltage Access Filter LEGEND Bracket BSP — Blower Service Panel Shown CAP —...
  • Page 5 CONNECTIONS ″ FPT Water Outlet ″ FPT Water Inlet 24” Service ″ FPT Access Condensate Drain LEFT INLET ″ K.O. High Voltage Access ″ DIA. Low Voltage Access Filter LEGEND Bracket BSP — Blower Service Panel Shown CAP — Control Access Panel CSP —...
  • Page 6 3/8” Threaded rods Optional Balancing Valve Return Air Dual Blower Optional Low Thermostat Discharge Pressure Drop Wiring Supply Air Unit Water Control Valve Power Power Wiring Insulated supply duct with Water Out at least one 90 deg elbow to reduce air noise Water In Y-Strainer with blow- Ball Valve with...
  • Page 7 Air Out Air Out Return Return (backside) 0.75 Front Return Rear Blow LEGEND Rear Return Front Supply BSP — Blower Service Panel CONNECTIONS CAP — Control Access Panel CSP — Compressor Service Panel ″ FPT Water Inlet NRP — Non-Removable Panel ″...
  • Page 8 Air Out Air Out Air Out Air Out 1.75 Return Air Back Side Return Air Return Air Return Air 0.75 Front Return T op Supply Rear Return T op Supply LEGEND CONNECTIONS BSP — Blower Service Panel ″ FPT Water Inlet CAP —...
  • Page 9 Air Out Air Out 1.75 Return Air Back Side Return Air 0.75 LEGEND BSP — Blower Service Panel CONNECTIONS CAP — Control Access Panel Rear Return T op Supply ″ FPT Water Inlet CSP — Compressor Service Panel NRP — Non-Removable Panel ″...

  • Page 10: Inspect Unit

    PROTECTION — Once the units are properly positioned on NOTE: Correct placement of the horizontal unit can play an the jobsite, they must be covered with either a shipping carton, important part in minimizing sound problems. Since duct- vinyl film, or an equivalent protective covering. Open ends of work is normally applied to these units, the unit can be pipes stored on the jobsite must be capped.

  • Page 11: Step 6 - Condensate Drain

    Step 6 — Condensate Drain HORIZONTAL UNITS (50HQL) — Slope the unit toward 1/4” Pitch for Drainage the drain at a in. per foot pitch. See Fig. 5. If it is not possi- ble to meet the required pitch, a condensate pump should be installed at the unit to pump condensate to building drain.

  • Page 12: Step 7 - Piping Connections

    Refer to the ment firm, independent testing facility, or local water authority Carrier System Design Manual for additional information. for specific recommendations to maintain water quality within All WSHP units utilize low temperature soldered female the published limits.
  • Page 13 Water Automatic Expansion Control Balance Valve Tank Valve Water Out Water In From Pump Shut-Off Valve Strainer – Field-Installed Accessory (16 to 20 mesh recommended for filter sediment) Boiler Drains Pressure- Temperature Plugs Fig. 7 — Typical Ground-Water Piping Installation Table 3 —...

  • Page 14: Supply Voltage

    NOTES FOR FIG. 8A: NOTES FOR FIG. 9B: 1. Compressor and blower motor thermally protected internally. 1. Compressor and blower motor thermally protected internally. 2. All wiring to the unit must comply with NEC and local codes. 2. All wiring to the unit must comply with NEC and local codes. 3.
  • Page 21 Table 4A — Electrical Data — 50HQL072-120 Units VOLTAGE BLOWER MOTOR COMPRESSOR UNIT VOLTAGE TOTAL RANGE MOTOR FACTORY INSTALLED MOCP* 50HQL (3 Ph — 60 Hz) OPTION Standard 10.4 65.5 25.8 28.4 208/230 Large 10.4 65.5 27.0 29.6 Standard 33.0 12.2 13.4 Large...

  • Page 22: External Loop Power Connection

    SUPPLY VOLTAGE — Operating voltage to unit must be Sheave Adjustment — The 50HQL,VQL units are supplied within voltage range indicated on unit nameplate. with a variable sheave drive on the fan motor to adjust for differing airflows at various ESP (external static pressure) con- On 3-phase units, voltages under load between phases must ditions.
  • Page 23 Table 5A — 50HQL072 Blower Performance Data EXTERNAL STATIC PRESSURE (in. wg) RATED — 0.23 0.26 0.31 0.35 0.39 0.44 0.48 0.53 0.58 0.63 0.68 0.73 0.79 0.84 0.90 1800 — 1015 1052 1088 Turns Open — 0.27 0.31 0.35 0.40 0.44 0.49...
  • Page 24 Table 5C — 50HQL120 Blower Performance Data EXTERNAL STATIC PRESSURE (in. wg) RATED 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.54 1.59 1.63 1.68 1.73 1.77 1.82 3400 1014 1043 1072 1102 1129 1156 1183 1209 1234 1260 1285 1309 1333...
  • Page 25 Table 5E — 50VQL100 Blower Performance Data EXTERNAL STATIC PRESSURE (in. wg) RATED 0.50 0.56 0.63 0.70 0.77 0.84 0.90 0.97 1.03 1.10 1.17 1.23 1.30 2700 Turns Open 0.57 0.63 0.70 0.78 0.86 0.92 0.99 1.06 1.13 1.20 1.26 1.33 1.40 2900...
  • Page 26 Table 5G — 50VQL160 Blower Performance Data EXTERNAL STATIC PRESSURE (in. wg) RATED 0.71 0.79 0.86 0.94 1.02 1.10 1.18 1.26 1.34 1.43 1.51 1.60 1.69 1.78 1.87 1.96 4000 1027 1058 1088 1117 Turns Open 0.89 0.97 1.06 1.14 1.22 1.31 1.40...
  • Page 27 Table 5I — 50VQL240 Blower Performance Data EXTERNAL STATIC PRESSURE (in. wg) RATED 0.53 0.60 0.67 0.74 0.81 0.87 0.94 1.01 1.08 1.15 1.21 1.28 1.35 5600 Turns Open 0.54 0.60 0.67 0.74 0.82 0.89 0.98 1.06 1.16 1.22 1.29 1.36 1.43 1.50...

  • Page 28: Step 9 - Low Voltage Wiring

    Step 9 — Low Voltage Wiring AIR COIL — To obtain maximum performance, the air coil should be cleaned before starting the unit. A ten percent solu- THERMOSTAT CONNECTIONS — The thermostat should tion of dishwasher detergent and water is recommended for be wired directly to the Aquazone™...

  • Page 29: D Control Dip Switches

    D Control DIP Switches — The D Control has 2 DIP switch blocks. Each DIP switch block has 8 switches and is labeled either S1 or S2 on the circuit board. See Fig. 8B, 9B and 10B. DIP SWITCH BLOCK 1 (S1) — This set of switches offers the following options for D Control configuration: Performance Monitor (PM) —...

  • Page 30: D Control Accessory Relay Configurations

    Table 6 — DIP Switch Block S2 — Accessory 1 Relay Options To avoid equipment damage, DO NOT leave system filled DIP SWITCH POSITION ACCESSORY 1 in a building without heat during the winter unless anti- RELAY OPTIONS freeze is added to system water. Condenser coils never Cycle with Fan fully drain by themselves and will freeze unless winterized Digital NSB...

  • Page 31: Scroll Compressor Rotation

    Scroll Compressor Rotation — An alternative method is to install a flow control device. It is important to be These devices are typically an orifice of plastic material de- certain compressor is rotating in the proper direction. To signed to allow a specified flow rate that are mounted on the determine whether or not compressor is rotating in the proper outlet of the water control valve.

  • Page 32: Cooling Tower/Boiler Systems

    Alcohols and glycols are commonly used as antifreeze NOTE: The compressor will have a 5-minute anti-short cycle agents. Freeze protection should be maintained to 15 F below upon power up. the lowest expected entering loop temperature. For example, if Units with Aquazone™ Complete C Control the lowest expected entering loop temperature is 30 F, the leav- ing loop temperature would be 22 to 25 F.

  • Page 33: System Test

    EMERGENCY HEAT — In Emergency Heat mode, the Fan TEST LED — Test LED will be activated any time the D Enable and Fan Speed relays are turned on. The EH1 output is control is in Test mode. The Test LED light is yellow. turned on immediately.

  • Page 34: Service

    Table 13 — Aquazone™ D Control Current LED Status and Alarm Relay Operations STATUS LED TEST LED DESCRIPTION FAULT LED (Red) ALARM RELAY (Green) (Yellow) Normal Mode Flash Last Fault Code in Memory Open Cycle (closed 5 sec, Normal Mode with PM Flashing Code 8 open 25 sec, …) D Control is non-functional...

  • Page 35: Condenser Cleaning

    CONDENSER Proper water treatment can minimize tube fouling and pitting. If such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design TANK REMOVE WATER Manual, Part 5, for general water conditioning information.

  • Page 36: Troubleshooting

    TROUBLESHOOTING 90.0 (Fig. 16 and 17, and Table 14) 80.0 When troubleshooting problems with a WSHP, consider the 70.0 following: 60.0 Thermistor — A thermistor may be required for single- phase units where starting the unit is a problem due to low 50.0 voltage.
  • Page 37 Table 14 — Troubleshooting FAULT HEATING COOLING POSSIBLE CAUSE SOLUTION Main Power Problems Green Status LED Off Check line voltage circuit breaker and disconnect. Check for line voltage between L1 and L2 on the contactor. Check for 24 VAC between R and C on controller. Check primary/secondary voltage on transformer.
  • Page 38 LP/LOC — Low Pressure/Loss of Charge — High Pressure — Reversing Valve LED — Light Emitting Diode Copyright 2003 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 PC 111 Catalog No.

  • Page 39: Start-Up Checklist

    50HQL,VQL START-UP CHECKLIST CUSTOMER:___________________________ JOB NAME: _______________________________________ MODEL NO.:___________________________ SERIAL NO.:____________________ DATE:_________ I. PRE-START-UP DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE? (Y/N) HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS TIGHT? (Y/N) HAVE WATER CONNECTIONS 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)
  • Page 40 (DEG F) *Use 500 for water, 485 for antifreeze. *97B0019N01* 97B0019N01 Copyright 2003 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book PC 111 Catalog No. 535-00096 Printed in U.S.A.

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