Table of Contents
Advertisement
Quick Links
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• INSPECTION
• STORAGE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 2
• HORIZONTAL UNITS (50PCH)
• VERTICAL UNITS (50PCV)
• INSTALLATION GUIDELINES (ALL UNITS)
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• INSPECT UNIT
Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . . 7
• PROTECTION
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . 7
• DUCT FLANGES
• HORIZONTAL UNITS (50PCH)
• VERTICAL UNITS (50PCV)
Step 5 — Check Duct System . . . . . . . . . . . . . . . . . . 8
• HORIZONTAL SUPPLY AIR CONFIGURATION
CONVERSION
Step 6 — Install Condensate Drain . . . . . . . . . . . . . . 9
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . . 9
• WATER LOOP APPLICATIONS
• GROUND LOOP APPLICATIONS
• INSTALLING SUPPLY AND RETURN HOSE KIT
• UNITS WITH WATERSIDE ECONOMIZER OR
BOILERLESS HEAT CONTROL
• AQUASTAT BULB INSTALLATION
Step 8 — Wire Field Power Supply . . . . . . . . . . . . . 10
• HIGH VOLTAGE
• OVERLOAD SETTING VERIFICATION
Wire Control Connections . . . . . . . . . . . . . . . . . . . . 33
• BETTER B, COMPLETE C, AND DELUXE D CONTROL
• ECM INTERFACE THERMOSTAT CONNECTIONS
• THERMOSTAT AND DDC SENSORS
• HOT GAS REHEAT CONTROL
• AUXILIARY RELAY (DELUXE D ONLY)
• ENERGY MANAGEMENT SWITCH (DELUXE D
ONLY)
• BOILERLESS HEAT CONTROL (DELUXE D ONLY)
• ALARM OUTPUT (ALL UNITS)
• WSHP OPEN CONTROL
• CONTROL TRANSFORMER
Step 9 — Configure Unit Control Components . . . 35
• UNIT PROTECTION MODULE (UPM)
• WATERSIDE ECONOMIZER
• BOILERLESS HEAT CONTROL (DELUXE D ONLY)
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500329-01
Installation, Start-Up, and
Service Instructions
Printed in U.S.A.
Form 50PC-9SI
Compact Water Source Heat Pumps
with Puron
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Page
• CLEAN AIR COIL
Set Blower Motor Speed . . . . . . . . . . . . . . . . . . . . . .37
• PERMANENT SPLIT CAPACITOR (PSC) MOTOR
• CONSTANT TORQUE (ECM) MOTOR
• CONSTANT AIRFLOW (ECM) MOTOR
System Flushing and Filling . . . . . . . . . . . . . . . . . . .42
System Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
• FLOW VERIFICATION
• FLOW REGULATION
• ANTIFREEZE
• FREEZE PROTECTION SELECTION
• START-UP
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . .43
• COOLING MODE START-UP
• HEATING MODE START-UP
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Unit Protection Module (UPM) . . . . . . . . . . . . . . . . .51
Units with Better B, Complete C, or
Deluxe D Controls . . . . . . . . . . . . . . . . . . . . . . . . . 51
• STANDBY
• COOLING
• HOT GAS REHEAT (OPTIONAL FOR COMPLETE C OR
DELUXE D CONTROLS)
• WATERSIDE ECONOMIZER (OPTIONAL FOR
COMPLETE C OR DELUXE D CONTROLS)
• TWO WAY WATER FLOW CONTROL VALVE
(OPTIONAL)
• BOILERLESS HEAT (DELUXE D ONLY)
• PUMP/VALVE RELAY (DELUXE D ONLY)
Units with WSHP Open Controls . . . . . . . . . . . . . . .51
• COOLING
• REVERSE CYCLE HEATING
• TWO POSITION OA DAMPER
• MODULATING OA DAMPER WITH DCV
• AUXILIARY MODULATING HOT WATER / STEAM
HEATING REHEAT
• 2-POSITION HOT WATER / STEAM HEATING
REHEAT
• SINGLE STAGE ELECTRIC AUXILIARY HEAT
• AUTOMATIC FAN SPEED CONTROL
• FAN SPEED CONTROL - DURING HEATING
• FAN SPEED CONTROL - DURING COOLING
• MODULATING WATER ECONOMIZER CONTROL
• 2-POSITION WATER ECONOMIZER CONTROL
• POWER FAIL RESTART DELAY
Pg 1
Aquazone™
50PCH, PCV 007-070
Refrigerant (R-410A)
®
8-22
Replaces: 50PC-8SI
Advertisement
Table of Contents
Related Manuals for Carrier Aquazone 50PCH PCV024
Summary of Contents for Carrier Aquazone 50PCH PCV024
- Page 1 Aquazone™ 50PCH, PCV 007-070 Compact Water Source Heat Pumps with Puron Refrigerant (R-410A) ® Installation, Start-Up, and Service Instructions CONTENTS PRE-START-UP ......36 System Checkout .
-
Page 2: Safety Considerations
• SAT MONITORING / CONTROL / ALARM hazards that could result in personal injury or death. CAUTION is • DEHUMIDIFICATION used to identify unsafe practices, which would result in minor • SPACE TEMPERATURE ALARMS personal injury or product and property damage. •... -
Page 3: Horizontal Units (50Pch)
VERTICAL UNITS (50PCV) accordance with Carrier’s recommended service clearances and installation instructions. Please refer to the Carrier Commercial Vertical units are designed for indoor installations only. Vertical WSHP Warranty Statement (document number 04-570008-01) - Page 4 Table 1 — Physical Data — 50PCH,PCV (007-030) Units 50PCH,PCV UNIT COMPRESSOR (1 each) Rotary Scroll Maximum Water Working Pressure (psig) PSC Fan Motor and Blower Fan Motor Type Fan Motor (hp) 1/10 Blower Wheel Size (Dia x W) (in.) 4.5 x 4.5 5.5 x 4.5 9 x 7...
- Page 5 Return Air Opening Return Air Opening Condensate Drain Condensate Drain Compressor Electrical Access Knock-Outs Left Hand Return Left Hand Return End Blow (FLE) Straight Through (FLS) NOTE: Models 048 and 060 Left Hand Return units have condenser water connections on the front right and electrical knockouts on the front left. Return Air Return Air Opening...
- Page 6 Access Panels Condenser Water Out Condenser Water In Condensate Electrical Drain Connections Left Hand Return Right Hand Return Return Air (Filter) View Blower Blower Access 18" Minimum 24" Optimum Compressor Access and Electrical/Control Access Compressor 24" Minimum 36" Optimum Electrical Control NOTE: Any work required to gain full access to the unit for repair or service is not covered under the scope of the product warranty.
-
Page 7: Step 3 - Locate Unit
Step 3 — Locate Unit Locate the unit in an indoor area that allows easy removal of the filter and access panels, and has enough room for service personnel to perform maintenance or repair. Provide sufficient room to make fluid, electrical, and duct connection(s). If the unit is located in a confined space such as a closet, provisions must be made for return air to freely enter the space. -
Page 8: Step 5 - Check Duct System
Install rubber grommet on the bracket as shown in Fig. 6. All major service access for the vertical models is from the front side of the unit. When installing the unit in a confined space such Hang the unit and assemble the field-provided threaded rod, as a closet, ensure that the service panel screws are accessible, nuts, and washers on the brackets as shown in Fig. -
Page 9: Step 6 - Install Condensate Drain
Limit piping materials to only polyethylene fusion in the systems to choose from: water loop, ground-water and ground buried sections of the loop. loop. Refer to Piping Section of Carrier System Design Manual • Do not use galvanized or steel fittings at any time due to for additional information. -
Page 10: Step 8 - Wire Field Power Supply
Optional pressure-rated hose assemblies designed specifically for cabinet to the building. use with Carrier units are available. Similar hoses can be obtained For heat pumps with unit mounted disconnect switches, field from alternate suppliers. Supply and return hoses are fitted with... - Page 11 Fig. 11 — PSC Motor, Single Phase/Single Stage, Better B or Complete C Control...
- Page 12 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION (HI) (MED) (LOW) 50PC111001 Rev. 5 Fig. 12 — PSC Motor, Single Phase/Single Stage, Deluxe D Control...
- Page 13 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION (HI) (MED) RED (LOW) Fig. 13 — PSC Motor, Single Phase/Single Stage, WSHP Open Control...
- Page 14 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION 50PC111002 Rev. 3 Fig. 14 — Constant Torque Motor, Single Phase/Single Stage, Better B or Complete C Control...
- Page 15 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION 50PC111003 Rev. 6 Fig. 15 — Constant Torque Motor, Single Phase/Single Stage, Deluxe D Control...
- Page 16 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION Fig. 16 — Constant Torque Motor, Single Phase, Single Stage, WSHP Open Control...
- Page 17 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT TO ECM MOTOR BROWN OUT FAULT EVAPORATOR FREEZE CONDITION ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C Fig.
- Page 18 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT TO ECM MOTOR CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT ADJUST BROWN OUT FAULT NORM EVAPORATOR FREEZE CONDITION TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C Fig.
- Page 19 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT TO ECM MOTOR CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT ADJUST BROWN OUT FAULT NORM EVAPORATOR FREEZE CONDITION TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C Fig.
- Page 20 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION (HI) (MED) (LOW) 50PC311000 Rev. 4 Fig. 20 — PSC Motor, Three Phase/Single Stage, Better B or Complete C Control...
- Page 21 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION (HI) (MED) (LOW) Fig. 21 — PSC Motor, Three Phase/Single Stage, Deluxe D Control...
- Page 22 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION (HI) (MED) (LOW) Fig. 22 — PSC Motor, Three Phase/Single Stage, WSHP Open...
- Page 23 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION 50PC311002 Rev. 3 Fig. 23 — Constant Torque Motor, Three Phase/Single Stage, Better B or Complete C Control...
- Page 24 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION Fig. 24 — Constant Torque Motor, Three Phase/Single Stage, Deluxe D Control...
- Page 25 Fig. 25 — Constant Torque Motor, Three Phase/Single Stage, WSHP Open...
- Page 26 UPM STATUS LED - BLINK CODES TO ECM MOTOR HIGH PRESSURE FAULT LOW PRESSURE FAULT ADJUST NORM CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT TEST BROWN OUT FAULT HGRH EVAPORATOR FREEZE CONDITION THERMOSTAT R C G O Y1 Y2 W1 W2 H C Fig.
- Page 27 TO ECM MOTOR ADJUST NORM TEST UPM STATUS LED - BLINK CODES HGRH HIGH PRESSURE FAULT LOW PRESSURE FAULT THERMOSTAT R C G O Y1 Y2 W1 W2 H C CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION Fig.
- Page 28 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT TO ECM MOTOR CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT ADJUST BROWN OUT FAULT NORM EVAPORATOR FREEZE CONDITION TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C Fig.
- Page 29 UNIT TERMINAL BLOCK (TB1) CLASS II VOLTAGE J1-9 USED TO CONNECT FIRE ALARM RELAY OR PHASE MONITOR OPTIONS OPTIONAL WIRING FACTORY JUMPER IS INSTALLED ON J5-5 AND J5-6 IF CONDENSATE FLOAT SWITCH (NC) IS NOT PRESENT STANDARD COMPONENTS: FOR 2-STAGE UNITS, CONNECT CMR CONN ACROSS PINS 4 AND 6 OF CMR1 DATS - DISCHARGE AIR TEMP SENSOR WITH SIGNAL CMR-4 GOING TO PIN 4 AND SIGNAL CMR-2 GOING TO PIN 6.
- Page 30 Table 4 — 50PC Electrical Data with PSC Blower Motor RATED COMPRESSOR BLOWER MOTOR 50PC VOLTAGE VOLTAGE CIRCUIT FUSE/ UNIT MIN/MAX V-Ph-Hz HACR 208-230/1/60 197/253 17.7 0.96 0.10 50PC007 265/1/60 238/292 13.5 0.85 0.10 208-230/1/60 197/253 22.2 0.96 0.10 50PC009 265/1/60 238/292 18.8...
- Page 31 Table 5 — 50PC Electrical Data with Constant Torque ECM Blower Motor RATED COMPRESSOR BLOWER MOTOR 50PC VOLTAGE VOLTAGE VOLTAGE CIRCUIT FUSE/ UNIT CODE MIN/MAX V-Ph-Hz HACR 208-230/1/60 197/253 29.0 0.33 50PC015 265/1/60 238/292 20.0 0.33 208-230/1/60 197/253 33.0 0.33 10.2 12.1 50PC018...
- Page 32 Table 6 — 50PC Electrical Data with Constant Airflow ECM Blower Motor COMPRESSOR BLOWER MOTOR TOTAL MODEL V/Ph/Hz VOLTAGE MIN/MAX CIRCUIT UNIT FLA FUSE/HACR AMPS 208-230/1/60 197/253 0.33 50PC015 265/1/60 238/292 0.33 208-230/1/60 197/253 0.33 10.2 12.1 50PC018 265/1/60 238/292 0.33 10.1 208-230/1/60...
- Page 33 OVERLOAD SETTING VERIFICATION When a Thermal Overload Relay is included with a unit (see Fig. 30 for location), prior to energizing the unit, visually verify that the amperage setting of the overload relay is set as defined in Table 7, below and Fig. 31-32. Table 7 —...
- Page 34 TEST HGRH WSHP Open is a factory installed DDC control that requires the use of Carrier ZS or WS sensors or the Carrier Equipment Touch or System Touch for space temperature sensing. WSHP HGRH Open is not compatible with thermostats or third party temperature sensors.
- Page 35 Freeze Sensor Step 9 — Configure Unit Control Components The default setting for the freeze limit trip is 26°F for applications without anti-freeze. This can be changed to 15°F for applications WARNING with anti-freeze by cutting the R30 resistor located on top of the DIP switch SW1.
-
Page 36: Waterside Economizer
UPM Dip Switch Settings BOILERLESS HEAT CONTROL (DELUXE D ONLY) The DIP switches are used to configure most of the available All units with Deluxe D control include an Aquastat for boilerless features of the UPM as follows: heat control. The Aquastat can be adjusted between 20°F and 60°F. - Page 37 14. Verify that the unit has proper service clearance. Be certain Remove the blower access panel and access the torque tap that all access panels are secured in place. wire on the motor. 15. Verify that ductwork has been properly fastened to supply Change the torque tap wire to on the molex plug to one of the and return duct collars.
- Page 38 Table 10 — PSC Motor Selection UNIT SIZE 50PCH, PCV MOTOR HP TAP 1 TAP 2 TAP 3 1/10 HIGH 1/10 HIGH 1/10 HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH HIGH NOTE(S): a. Bold type indicates factory default motor setting. Table 11 —...
- Page 39 Table 12 — 50PCH,PCV (007-070) PSC Blower Performance AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) 50PC RATED UNIT SPEED AIRFLOW 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 — — — — — — — —...
- Page 40 Table 13 — 50PCH,PCV (015-070) Constant Torque ECM Motor Blower Performance AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) 50PCH, RATED TAP # AIRFLOW 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 — — — — —...
- Page 41 Table 14 — 50PCH, PVC (015-070) Constant Airflow ECM Motor Blower Performance DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) 50PCH, FACTORY SPEED 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 SETTINGS DEFAULT AIRFLOW (CFM) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL SPEED...
-
Page 42: Flow Verification
FLOW REGULATION System Flushing and Filling Once the piping is complete, units require final purging and loop Flow regulation can be accomplished by two methods. Most water charging. A flush cart pump of at least 1.5 hp is needed to achieve control valves have a flow adjustment built into the valve. -
Page 43: Unit Starting Conditions
ANTIFREEZE NOTE: Two factors determine the operating limits of a unit: entering-air temperature and water temperature. Whenever any of In areas where leaving water temperatures drop below 40°F or these factors are at a minimum or maximum level, the other two where piping will be routed through areas subject to freezing, anti- factors must be at a normal level to ensure proper unit operation. - Page 44 Verify that the compressor is on and that the water flow rate is SCROLL COMPRESSOR ROTATION correct by measuring pressure drop through the heat It is important to be certain compressor is rotating in the proper exchanger using P/T plugs. Check the elevation and direction.
- Page 45 Table 20 — 50PC009 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
- Page 46 Table 22 — 50PC015 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
- Page 47 Table 24 — 50PC024 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
- Page 48 Table 26 — 50PC036 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
- Page 49 Table 28 — 50PC042 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
- Page 50 Table 30 — 50PC060 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG) (PSIG) Rise (°F) (°F) DB (PSIG)
-
Page 51: Operation
PUMP/VALVE RELAY (DELUXE D ONLY) OPERATION The pump/valve relay is enabled anytime there is a call for cool- Power Up Mode ing (Y), heating (Y), or dehumidification (H) and can be used to The unit will not operate until all the inputs, terminals and safety enable/disable field installed flow control valves or circulator controls are checked for normal operation. - Page 52 START RESET ON R RESET ON Y1 = ON R = 24VAC POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED SOFT LOCKOUT COUNTER V > 18VAC RECORD ALARM NEEDED? START COUNTER (IF APPLICABLE) CNT = CNT+1 HPC = CLOSED LOCKOUT CAN BE SET COUNT = 2...
- Page 53 Fig. 40 — WSHP Open Control Board AUXILIARY MODULATING HOT WATER / STEAM 2-POSITION HOT WATER / STEAM HEATING REHEAT HEATING REHEAT The control can operate a two position, NO or NC, hot water or steam valve connected to a coil on the discharge side of the unit The control can modulate a hot water or steam valve connected to and supplied by a boiler in order to maintain the desired heating a coil on the discharge side of the unit and supplied by a boiler in...
- Page 54 SINGLE STAGE ELECTRIC AUXILIARY HEAT compressor will be started to satisfy the load. As the SAT approaches the Maximum Heating SAT limit, the economizer The control can operate a single stage of electric heat connected to valve will modulate closed during compressor operation. a coil on the discharge side of the unit in order to maintain the desired heating set point should the compressor capacity be 2-POSITION WATER ECONOMIZER CONTROL...
- Page 55 occupied hysteresis and unoccupied high and low alarm set RELATIVE HUMIDITY ALARM points are provided. The control provides a 5 minute alarm delay The control provides the ability to generate an alarm whenever the during unoccupied periods. During occupied periods, the control space relative humidity exceeds the alarm set point.
-
Page 56: Gravity Flow Method
In a single family home, recommended. Refer to the Carrier System Design Manual, Part 5, that is not under construction, changing or cleaning the filter every for general water conditioning information. -
Page 57: Refrigerant Charging
Regulate flow to condenser with a supply line valve. If pump is a temperature does not agree with the required liquid line non-overloading type, the valve may be fully closed while pump temperature, ADD refrigerant to raise the temperature or is running. - Page 58 thermal expansion valve. If temperature drops below or re- mains at freeze limit trip for 30 seconds, the controller will shut down the compressor and enter into a soft lockout condition. The default freeze limit trip is 26°F. See Fig. 44 and 45.
-
Page 59: Thermostatic Expansion Valves
Brownout/Surge/Power Interruption Protection During this period the fault LED will indicate the cause of the fault. If the fault condition still exists or occurs 2 or 4 times (de- The brownout protection in the UPM board will shut does the pending on 2 or 4 setting for LOCKOUT DIP switch) before 60 compressor if the incoming power falls below 18 VAC. - Page 60 The TXV sensing bulb must be properly located, secured, and in- Corrosive debris within the system may happen after a fail- sulated as it will attempt to control the temperature of the line to ure, such as a compressor burn out, if system was not prop- which it is connected.
- Page 61 To determine that a TXV has failed, verify the following: CAUTION • The suction pressure is low and the valve is non- responsive. Use caution when tightening the strap. The strap must be tight • The TXV sensing bulb can be removed from the suction enough to hold the bulb securely but caution must be taken not line and warmed by holding the bulb in your hand.
- Page 62 Hot Gas Line Airflow Condenser Water Coil Equalizer Line*** Distributor Filter Drier** Expansion Valve TXV Sensing Bulb LEGEND Access Point (1/4" Male NPT) High Pressure Switch Solenoid Suct. In Insulated Piping (Extended Range Only) Reversing Low Pressure Switch Valve Test Point for Water Regulating Valve (Optional) Coil Only Present on Scroll Disch.
- Page 63 Table 33 — Troubleshooting FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION High Pressure fault - no or low Check water valves and/or pumps for proper operation. water flow Check for water coil blockage. High Pressure fault - high water Check water temperature - is it in range? temperature High Pressure fault - fouled or Check for proper flow rate and water temperature, but low...
- Page 64 Table 33 — Troubleshooting (cont) FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION Check supply voltage from the fan relay to the motor. Check that all motor wires are secure. With power off spin the motor Fan relay energized Faulty motor shaft - noise, resistance or uneven motion can be signs of motor failure.
- Page 66 © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500329-01 Printed in U.S.A. Form 50PC-9SI Pg 66 8-22 Replaces: 50PC-8SI...
-
Page 67: 50Pch,Pcv Start-Up Checklist
50PCH,PCV START-UP CHECKLIST (Remove and use for job file.) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up, and Service Instructions document. -
Page 68: Heating Cycle Analysis
SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze. © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500329-01 Printed in U.S.A.
Need help?
Do you have a question about the Aquazone 50PCH PCV024 and is the answer not in the manual?
Questions and answers