Page 1: Table Of Contents
™ Aquazone 50PTH, PTV024-070 Two-Stage Water Source Heat Pumps ® with Puron Refrigerant (R-410A) Installation, Start-Up, and Service Instructions CONTENTS System Flushing and Filling ....39 System Flow .
Page 2 • HOLIDAY SCHEDULES • OVERRIDE SCHEDULES WARNING COMPLETE C AND DELUXE D Electrical shock can cause personal injury and death. Shut off BOARD SYSTEM TEST ..... 51 all power to this equipment during installation.
Page 3: Horizontal Units (50Pth)
Table 1 — Physical Data — 50PTH, PTV Sizes 024-070 UNIT 50PTH, PTV Scroll COMPRESSOR REFRIGERANT CHARGE 50PTV (oz) REFRIGERATION CHARGE 50PTH ONLY (oz) MAXIMUM WATER WORKING PRESSURE (psig) 450/3100 450/3100 450/3100 450/3100 450/3100 ECM CONSTANT TORQUE - FAN MOTOR/BLOWER Constant Torque ECM / 5 speed Fan Motor Type/Speeds 0.33...
Page 4: Step 2 - Check Unit
Carrier’s recommended service clearances and installation temperature of the job (standard or extended range). instructions. Please refer to the Carrier Commercial WSHP War- Remove the unit packaging, keeping the unit attached to the ranty Statement (document number 04-570008-01) for details on shipping pallet.
Page 5 K’ P (RH) P’ (LH) R (RH) R’ (LH) 50PTH RETURN AIR WATER FILTER SIZE FILTER RACK WATER DRAIN WATER ELECTRICAL HEATER UNIT DUCT CONNECTIONS (QTY) WIDTH DEPTH* HEIGHT SUPPLY AIR DUCT OPENING PORT KNOCKOUT KNOCKOUT HEIGHT WIDTH DEPTH WIDTH HEIGHT 25.1 64.1 19.7...
Page 6 K’ P (RH) P’ (LH) R (RH) R’ (LH) 50PTH RETURN AIR WATER FILTER SIZE FILTER RACK WATER DRAIN WATER ELECTRICAL HEATER UNIT DUCT CONNECTIONS (QTY) WIDTH DEPTH* HEIGHT SUPPLY AIR DUCT OPENING PORT KNOCKOUT KNOCKOUT HEIGHT WIDTH DEPTH WIDTH HEIGHT 25.1 64.1 19.7...
Page 7 T (LH) T (RH) U (LH) U (RH) V (LH) V (RH) W (LH) W (RH) 50PTV RETURN AIR WATER FILTER SIZE FILTER RACK WATER DRAIN WATER ELECTRICAL HEATER UNIT DUCT CONNECTIONS (QTY) WIDTH DEPTH* HEIGHT SUPPLY AIR DUCT OPENING PORT KNOCKOUT KNOCKOUT...
Page 8 50PTH 024-070 UNITS SUPPLY AIR CONFIGURATION - STRAIGHT THROUGH Electrical Air Coil Control Blower Access Compressor Access 18" Minimum Control Access 24" Optimum 24" Minimum 36" Optimum Blower Compressor Right Hand Return, Straight Through Discharge Air Flow Pattern (RS) Shown 50PTV 024-070 UNITS Blower Blower Access...
Page 9 Left Hand Return-Top View Right Hand Return-Top View NOTES: 1. All dimensions within ± 0.125 inches. 2. All dimensions are in inches. 3. Dimension “E” is typical for all models, configurations and bracket positions. Fig. 5 — Hanging Bracket Dimensional Drawing...
Page 10: Step 3 - Locate Unit
The following additional materials are needed and must be field- Step 3 — Locate Unit supplied: Locate the unit in an indoor area that allows easy removal of the • Threaded Rod (3/8 in. maximum diameter) filter and access panels, and has enough room for service person- nel to perform maintenance or repair.
Page 11: Vertical Units (50Ptv)
PAD (FULL SIZE) unit and must be ordered separately from the unit. Consult your area Carrier representative for the kit part number. Fig. 9 — Mounting Vertical Units All major service access for the vertical models is from the front Step 6 —...
Page 12: Step 7 - Pipe Connections
Refer to Piping Section of Carrier System Design Manual • Use backup wrench. Do not overtighten connections.
Page 13: Ground-Loop Applications
Water Flow Control Regulator Valve (field-installed Pressure (field-installed accessory) Tank accessory) Water Out Water In From Pump Shut-Off Valve (field-installed accessory) Strainer (field-installed accessory) (16 to 20 mesh recommended for filter sediment) Boiler Drains (field-installed) Fig. 11 — Typical Ground-Water Piping Installation Water Supply and Quantity GROUND-LOOP APPLICATIONS Check water supply.
Page 14 Table 2 — Water Quality Guidelines CLOSED CONDITION OPEN LOOP AND RECIRCULATING WELL MATERIAL RECIRCULATING Scaling Potential — Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. pH/Calcium Hardness Method pH <...
Page 15: Installation Of Supply And Return Hose Kit
Optional pressure-rated hose assembly(s) designed specifically for See Fig. 13 and 14 for typical control box layout and Fig. 15-28 use with Carrier units are available. Similar hoses can be obtained for typical wiring diagrams. Refer to the unit wiring diagram at- from alternate suppliers.
Page 16 1 — Hot Gas Reheat Relay (Option) 1 — Hot Gas Reheat Relay (Option) 2 — Fan Status Switch (Option) 2 — Emergency Relay (Option) 3 — Pump Status Switch (Option) 3 — Ground Lug 4 — Ground Lug 4 — Comfort Alert Module (Option) 5 —...
Page 17 UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND — Blower Motor NOTES: — Compressor Capacitor See unit name plate for electrical rating. —...
Page 18 TO ECM MOTOR ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND...
Page 19 UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND — Auxiliary Relay (For Loop Pump, Etc.) NOTES: 1. See unit name plate for electrical rating. —...
Page 20 TO ECM MOTOR ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND...
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 Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND AUX — Auxiliary Relay (For Loop Pump, Etc.) — Blower Motor CAP —...
Page 22 STANDARD COMPONENTS LEGEND AUX — Auxiliary Relay (For Loop Pump, Etc.) — Blower Motor UPM STATUS LED — BLINK CODES CAP — Compressor Capacitor CBR — 24V Circuit Breaker High Pressure Fault — Compressor Contactor Low Pressure Fault — Condensate Sensor (In Drain Pan) Condenser Freeze Condition EMS —...
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 Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND — Blower Motor — 24V Circuit Breaker NOTES: — Compressor Contactor 1.
Page 24 TO ECM MOTOR ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND...
Page 25 UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND — Auxiliary Relay (For Loop Pump, Etc.) — Blower Motor —...
Page 26 TO ECM MOTOR ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C UPM STATUS LED — BLINK CODES High Pressure Fault Low Pressure Fault Condenser Freeze Condition Condensate Overflow Fault Brown Out Fault Evaporator Freeze Condition Factory Wiring Field Wiring STANDARD COMPONENTS LEGEND...
Page 27 UPM STATUS LED — BLINK CODES High Pressure Fault STANDARD COMPONENTS LEGEND Low Pressure Fault Condenser Freeze Condition — Auxiliary Relay (For Loop Pump, Etc.) Condensate Overflow Fault — Blower Motor Brown Out Fault — 24V Circuit Breaker — Compressor Contactor Evaporator Freeze Condition COMP —...
Page 28 STANDARD COMPONENTS LEGEND — Auxiliary Relay (For Loop Pump, Etc.) — Blower Motor UPM STATUS LED — BLINK CODES — 24V Circuit Breaker High Pressure Fault — Compressor Contactor Low Pressure Fault COMP — Compressor Condenser Freeze Condition — Condensate Sensor (In Drain Pan) Condensate Overflow Fault —...
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 STANDARD COMPONENTS: SWITCH (NC) IS NOT PRESENT 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 CAUTION: UNIT CONTAINS TWO POWER SUPPLIES - HEATER PACKAGE WIRE HARNESS PLUG CONNECTED TO MAIN CONTROL BOX NOTE: L1 AND L2 PROVIDE POWER TO MAKE SURE BOTH ARE OFF BEFORE SERVICING. CONTROL TRANSFORMER AND BLOWER MOTOR WHITE -W1 BLUE -W2 GREY -C BLACK BLACK...
Page 31 Table 4 — 50PT Electrical Data COMPRESSOR ECM CONST TORQUE MOTOR ECM CONST AIRFLOW MOTOR RATED VOLTAGE MODEL COMPRESSOR VOLTAGE LRA MOTOR MOTOR MIN/MAX CIRCUIT CIRCUIT v-Ph-Hz FUSE/ HACR FUSE/HACR AMPS AMPS 8733902168 208/230-1-60 197/253 11.7 58.3 17.4 17.4 8733801381 265/277-1-60 238/292 54.0...
Page 32 Table 6 — 50PTH, PTV Units with Electric Heat Option — Constant Airflow ECM Motor Electrical Data HEATER HEATER WATTS CIRCUIT UNIT MOTOR AMPS RATED STAGE SIZE FLA (A) FUSES 4,800 3,600 20.0 17.3 — 28.5 25.1 4,800 3,600 20.0 17.3 —...
Page 33: Step 9 - Wire Control Connections
• C1 Transformer 24 VAC Common (primary connection) Step 9 — Wire Control Connections • R Transformer 24 VAC Hot COMPLETE C AND DELUXE D CONTROL • H Dehumidification Mode Control wiring for units with constant torque blower motors are connected to a terminal block located in the unit electrical box.
Page 34: Boilerless Heat Control (Deluxe D Only)
WSHP Open is a factory installed DDC control that requires the from freezing if a freeze sensor is included. use of Carrier ZS or WS sensors or the Carrier Equipment Touch ™...
Page 35: Pre-Start-Up
Table 7 — Low Voltage VA Draw STANDARD CONSTRUCTION HOT GAS REHEAT OR ECONOMIZER OPTIONAL COMPONENTS Component Component Component Blower Relay Monitor Relay (VA draw Total from ‘Standard’ 22-26 (PSC Motors Only) per relay) Reversing Valve Additional Control Internal 2 Way 12-14 Solenoid Relays...
Page 36: Clean Air Coil
Set Blower Motor Speed CONSTANT TORQUE (ECM) MOTOR The 50PT units from size 015 to 070 in 208-v, 230-v, 265-v, or 460-v are available with constant torque ECM blower motors. Constant Torque ECM motors have five speed settings. See Table 9 for the factory default motor setting. See Table 10 for blower performance by speed setting.
Page 37 Table 9 — Constant Torque Motor Blower Performance Data AIRFLOW (cfm) 50PTH, RATED FACTORY AIRFLOW External Static Pressure (in. wg) SPEED SETTING UNITS (cfm) 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1,154 1,117 1,077 1,034 —...
Page 38 Table 10 — ECM Constant cfm Motor Blower Performance Data AIRFLOW (cfm) 50PTH, RATED AIRFLOW ADJUSTMENT External Static Pressure (in. wg) SPEED UNITS (cfm) 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 High — — PART Normal — —...
Page 39: System Flushing And Filling
to ensure the motor housing has been flooded. Be sure the loop System Flushing and Filling flow center provides adequate flow through the unit by checking Once the piping is complete, units require final purging and loop pressure drop across the heat exchanger. Compare the results to charging.
Page 40: Start-Up
Water Flow Rate (GPM) 50PT024 50PT036 50PT048 50PT060 50PT070 Fig. 35 — 50PT Water Pressure Drop Curve Table 11 — Approximate Fluid Volume (gal.) per START-UP 100 Ft of Pipe Use the procedure outlined below to initiate proper unit start-up. PIPE DIAMETER (in.) VOLUME (gal.)
Page 41: Start-Up Procedure
If the suction pressure does not drop and the discharge pressure Table 13 — Operating Limits does not rise to normal levels: EXTENDED Turn off power to the unit. Install disconnect tag. STANDARD AIR LIMITS RANGE UNIT Reverse any two of the unit power leads. OPTION COOLING Reapply power to the unit and verify pressures are correct.
Page 42 Table 14 — 50PT 024 Typical Unit Operating Pressures and Temperatures (Part Load) a,b,c COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water MODEL WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG)
Page 43 Table 16 — 50PT 036 Typical Unit Operating Pressures and Temperatures (Part Load) a,b,c COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water MODEL WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG)
Page 44 Table 18 — 50PT 048 Typical Unit Operating Pressures and Temperatures (Part Load) a,b,c COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water MODEL WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG)
Page 45 Table 20 — 50PT 060 Typical Unit Operating Pressures and Temperatures (Part Load) a,b,c COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water MODEL WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG)
Page 46 Table 22 — 50PT 070 Typical Unit Operating Pressures and Temperatures (Part Load) a,b,c COOLING HEATING ENTERING WATER Suction Discharge Water Air Temp Suction Discharge Water MODEL WATER FLOW Air Temp. Pressure Pressure Temp Drop Pressure Pressure Temp. TEMP (°F) (GPM/TON) Drop (°F) (PSIG)
Page 47: Operation
which will differ from the other control packages. Below is an OPERATION overview of the different features for the WSHP Open controls. Power Up Mode For more details of the WHSP Open operation, refer to the WSHP Open Integration Guide and the WSHP Points/Properties Manual. The unit will not operate until all the inputs, terminals and safety See Fig.
Page 48 START RESET ON R RESET ON Y1 = ON R = 24VAC POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED COUNTER SOFT LOCKOUT V > 18VAC NEEDED? RECORD ALARM START COUNTER (IF APPLICABLE) CNT = CNT+1 HPC = CLOSED LOCKOUT CAN BE SET COUNT = 2...
Page 49: Auxiliary Modulating Hot Water/Steam Heating Reheat
Fig. 37 — WSHP Open Control Board AUXILIARY MODULATING 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 50: Single Stage Electric Auxiliary Heat
SINGLE STAGE ELECTRIC AUXILIARY HEAT maximum heating SAT limit, the economizer valve will modulate closed during compressor operation. The control can operate a single stage of electric heat connected to a coil on the discharge side of the unit in order to maintain the de- 2-POSITION WATER ECONOMIZER CONTROL sired heating setpoint should the compressor capacity be insuffi- The control has the capability to open a NO or NC, two position,...
Page 51: Space Temperature Alarms
SPACE TEMPERATURE ALARMS RELATIVE HUMIDITY ALARM The control provides the ability to generate an alarm whenever The control provides the ability to generate an alarm whenever the the space temperature exceeds the alarm setpoint. A separate oc- space relative humidity exceeds the alarm setpoint. A separate oc- cupied hysteresis and unoccupied high and low alarm setpoints cupied and unoccupied alarm setpoint is provided.
Page 52: Board Default Settings
Refer to the Carrier System Design Manual, Part 5, for ronment the equipment is used in. In a single family home, that is general water conditioning information.
Page 53: Gravity Flow Method
Gas Vent Priming CAUTION Pump Conn. Globe Va lves Follow all safety codes. Wear safety glasses and rubber gloves Suction when using inhibited hydrochloric acid solution. Observe and Supply Pump follow acid manufacturer’s instructions. Support 1” Pipe Clean condensers with an inhibited hydrochloric acid solution. The acid can stain hands and clothing, damage concrete, and, Condenser without inhibitor, damage steel.
Page 54: Air Coil Fan Motor Removal
thermal expansion valve. If temperature drops below or re- Air Coil Fan Motor Removal mains at freeze limit trip for 30 seconds, the controller will shut down the compressor and enter into a soft lockout CAUTION condition. The default freeze limit trip is 26°F. (See Fig. 41 and 42.) Before attempting to remove fan motors or motor mounts, •...
Page 55 the DIP switch setting for ALARM. If it is set to CONST, a con- stant signal will be produced to indicate a fault has occurred and the unit requires inspection to determine the type of fault. If it is set to PULSE, a pulse signal is produced and a fault code is detect- ed by a remote device indicating the fault.
Page 56: Freeze Protection Sensors
Lockout Reset TXV FAILURE A hard lockout can be reset by turning the unit thermostat off and The most common failure mode of a TXV is when the valve fails then back on when the RESET DIP switch is set to "Y" or by shut- while closed.
Page 57 Causes of TXV Failure Refrigerant pressure-temperature chart for the refrigerant used. The most common causes of TXV failure are: To determine that a TXV has failed, verify the following: A cracked, broken, or damaged sensing bulb or capillary can be caused by excessive vibration of the capillary during ship- The suction pressure is low and the valve is non-responsive.
Page 58 IMPORTANT: Due to the hygroscopic nature of the POE oil in IMPORTANT: Repair of any sealed refrigerant system requires Puron refrigerant (R-410A) and other environmentally balanced training in the use of refrigeration tools and procedures. Repair refrigerants, any component replacement must be conducted in a should only be attempted by a qualified service technician.
Page 59 Table 25 — Troubleshooting FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION High Pressure fault - no or Check water valves and/or pumps for proper operation. low water flow Check for water coil blockage. High Pressure fault - high Check water temperature - is it in range? water temperature Is fault LED High Pressure fault - fouled...
Page 60 Table 25 — Troubleshooting (cont) FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION Power LED on Bad thermostat connection/ Check thermostat and wiring. Check unit terminal block faulty thermostat for 24 VAC between "Y" and "C" and "G" and "C". Ensure that the supply voltage to the unit is with in the Low or no supply power range shown on the unit data plate.
Page 61 Table 25 — Troubleshooting (cont) FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION Poor ductwork/grille design Ensure ductwork and grilles are properly sized for unit airflow. Air noise Consult blower performance table and reduce fan speed Fan speed setting too high if possible.
Page 64 © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500146-01 Printed in U.S.A. Form 50PT-6SI Pg 64 6-22 Replaces: 50PT-5SI...
Page 65: 50Pth, Ptv Start-Up Checklist
50PTH, PTV START-UP CHECKLIST 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 sec- tions of this Installation Instruction document.
Page 66 TEMPERATURES FILL IN THE ANALYSIS CHART ATTACHED. COAXIAL HEAT COOLING CYCLE: EXCHANGER FLUID IN FLUID OUT FLOW HEATING CYCLE: FLUID IN FLUID OUT FLOW AIR COIL COOLING CYCLE: AIR IN AIR OUT HEATING CYCLE: AIR IN AIR OUT CL-2...
Page 67 COMPRESSOR EXPANSION COAX DISCHARGE VALVE °F °F LIQUID LINE °F FLUID IN FLUID OUT CONTACT CARRIER COMMERCIAL SERVICES OR PRODUCT MANAGEMENT FOR ACCEPTABLE PRESSURE DROP TO DETERMINE FLOW RATE COOLING CYCLE ANALYSIS °F SUCTION COIL °F °F COMPRESSOR EXPANSION COAX...
Page 68 © 2022 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500146-01 Printed in U.S.A. Form 50PT-6SI Pg CL-4 6-22 Replaces: 50PT-5SI...

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Carrier Aquazone 50PTH024 Installation, Start-Up And Service Instructions Manual

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