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AQUAZONE™
50HQP072-120
Horizontal Water Source Heat Pumps
®
with PURON Refrigerant (R-410A)
50 Hz
Installation, Start-Up, and
Service Instructions
CONTENTS Page
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Page
Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 24
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2
Ground Coupled, Closed Loop and Plateframe
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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accessories when modifying this product. Refer to the See Fig. 1 for overall unit dimensions. Refer to Fig. 2 for an ex- individual instructions packaged with the kits or accessories ample of a typical horizontal installation. when installing. CAUTION Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire To avoid equipment damage, do not use these units as a extinguisher available. Read these instructions thoroughly and source of heat
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especially important in areas where painting, plastering, or 3. Verify that the unit’s refrigerant tubing is free of kinks or spraying of fireproof material, etc. is not yet complete. Foreign dents, and that it does not touch other unit components. material that is allowed to accumulate within the units can pre- 4. Inspect all electrical connections. Be sure connections are vent proper start-up and necessitate costly clean-up operations. clean and tight at their terminations. Before installing
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RIGHT RETURN STRAIGHT DISCHARGE LEFT RETURN STRAIGHT DISCHARGE BSP BSP A B C CBP 1 CAP 5 F D 1 4 E G EAP EAP O 2 CAP CBP 2 CAP CAP M P Q FRONT R FRONT K LEGEND SERVICE ACCESS BSP — Blower Service Panel 3’ (91 cm.) TYPICAL CAP — Control Access Panel ALL CONFIGURATIONS CBP — Control Box Panel EAP — Expansion Valve Access Panel NOTES: 1. All dimensions in centimeters, unless indicated. 2. Access is required for all removable panels and installer should take care to comply with all building codes an
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NOTES: 1. Access is required for all removable panels and installer should LEGEND take care to comply with all building codes and allow adequate BSP — Blower Service Panel clearance. CAP — Control Access Panel 2. Water inlet and outlet connections are available on either side of CBP — Control Box Panel the unit. Plugs are shipped loose in a plastic bag tied to the water EAP — Expansion Valve Access Panel leg in front of the unit. Installer must plug unused connection. 3. Condensate drain connect
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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. 1/4” Pitch for • Check existing ductwork for leaks and repair as Drainage necessary. NOTE: Local codes may require ventilation air to enter the space for proper indoor air quality. Hard-duct ventilation may be required for the ventilating air supply. If
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FRONT RETURN AIR REMOVE MOTOR AND BLOWER SHEAVE ADJUSTING BOLT REMOVE 4 MOTOR BOLTS a50-8538 REMOVE BLOWER PANEL AND ACCESS PANEL Fig. 6 — Removing Panels a50-8540 Fig. 8 — Removing Motor MOTOR SLIDE NUTS MOTOR CLIPS a50-8539 Fig. 7 — Removing Belt 7. Mount motor, motor sheave, blower sheave and belt. Make sure wires are not pinched and not over sharp edg- es. Adjust motor downward to tighten belt. Raise or lower motor slide assembly with adjusting bolt and retighten the a50-8541 2 slide n
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Step 9 — Install Field Power Supply Wiring SWIVEL BRASS BRASS WARNING FITTING RIB CRIMPED FITTING Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There LENGTH may be more than one disconnect switch. Tag all discon- (2 FT [0.6M] LENGTH STANDARD) nect locations to alert others not to restore power until work EPT is completed. Fig. 10 — Supply/Return Hose Kit CAUTION • All plastic to metal threaded fittings should be avoided due to th
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Determine percent voltage imbalance. NOTE: If more than 2% voltage imbalance is present, contact local electric utility. 4 % Voltage Imbalance = 100 x EXTERNAL LOOP POWER CONNECTION — If the unit 421 is to be connected to an external loop pump or flow controller, connect the pump to the loop pump terminal block PB1. The = 0.95% maximum power handling is 4 amps at 240 volts. The pumps This amount of phase imbalance is satisfactory as it is will automatically cycle as required by the unit. below
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Table 2 — Water Quality Guidelines HX CONDITION CLOSED RECIRCULATING† OPEN LOOP AND RECIRCULATING WELL** MATERIAL* Scaling Potential — Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. pH/Calcium All N/A pH < 7.5 and Ca Hardness, <100 ppm Hardness Method Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.) Scaling indexes should be calculated at 150 F for direct use and
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Complete C1 Complete C2 Complete C Complete C Complete C1 Complete C2 LEGEND BC — Blower Contactor Field Line Voltage Wiring Ground CB — Circuit Breaker Field Low Voltage Wiring CC — Compressor Contactor Solenoid Coil CO — Sensor, Condensate Overflow Printed Circuit Trace DPP — Dual Point Power Relay Contacts - N.O. Optional Wiring FP1 — Sensor, Water Coil Freeze Protection FP2 — Sensor, Air Coil Freeze Protection Relay Contacts - N.C. Relay/Contactor Coil HP — High-Pressure Switch Temperature
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12 Deluxe D Deluxe D Deluxe D1 Deluxe D2 Deluxe D1 Deluxe D2 See legend and notes on page 11. Fig. 13 — 50HQP072-120 Units — Typical Control Wiring with Deluxe D Control
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CMPSAFE CMPSAFE COMPLETE PREMIER C LINK CONTROL PWR LEGEND Y CR — Control Relay HS1/EXH/RVS LWT — Leaving Water Temperature Sensor CR W SAT — Supply Air Temperature Sensor SPT — Space Temperature Sensor CR NOTE: Reversing valve is on in Cooling O mode. G R C CMP1 AL1 FAN AL2 A J5 J6 J4 L S S A P W T T T Fig. 14 — Premierlink™ Controller Applications Wiring with Complete C Control PREMIER LINK PWR DELUXE D CONTROL Y1 HS2 Y2 HS1 W1 LEGEND O/W2 CMP2 LWT — Leaving Water Temperature Sensor SAT — Supp
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Table 3A — Electrical Data — 50HQP072-120 Standard Units COMPRESSOR FAN TOTAL MIN UNIT VOLTAGE MIN/MAX BLOWER MAX VOLTAGE MOTOR UNIT CIRCUIT 50HQP CODE VOLTAGE OPTION FUSE QTY RLA LRA FLA FLA AMP 072 9 380/420-3-50 360/440 A,B,C 2 5.4 38.0 1.8 12.6 13.9 15 096 9 380/420-3-50 360/440 A,B,C 2 6.1 43.0 3.4 15.6 17.1 20 120 9 380/420-3-50 360/440 A,B,C 2 7.8 51.5 4.9 20.5 22.5 30 Table 3B — Electrical Data — 50HQP072-120 Dual Point Power Units EMERGENCY COMPRESSOR POWER SUPPLY UNIT VOLTAGE MIN/MA
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Step 10 — Install Field Control Wiring THERMOSTAT CONNECTIONS — The thermostat should TERMINAL STRIP P2 be wired directly to the Aquazone™ control board. See Fig. 18 and 19. C The thermostat should be located on an interior wall in a TYPICAL WATER 24 VAC larger room, away from supply duct drafts. DO NOT locate the VALVE thermostat in areas subject to sunlight, drafts or on external A walls. The wire access hole behind the thermostat may in cer- tain cases need to be sealed to prevent erroneous t
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To adjust sheave position, follow the procedure outlined PRE-START-UP below: System Checkout — When the installation is complete, 1. Loosen belt tension and remove belt. follow the system checkout procedure outlined below before 2. Loosen set screw on fan motor. starting up the system. Be sure: 3. Open sheave to desired position. 1. Voltage is within the utilization range specifications of the unit compressor and fan motor and voltage is balanced 4. Retighten set screw and replace belt. for 3-ph
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Table 5 — Blower Data — 50HQP072 EXTERNAL STATIC PRESSURE (Pa) AIRFLOW (l/s) 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 BkW — — 0.09 0.12 0.14 0.17 0.19 0.21 0.24 0.25 0.27 0.29 0.31 0.32 0.34 0.35 Sheave/Mtr — — B AAAA A C C CCCC CC 614 RPM — — 505 563 615 655 695 730 765 790 815 840 870 890 910 925 Turns Open — — 35 3.5 3215 4.5 4 3.5 2.5 2.5 2 1.5 BkW — 0.120.140.170.190.220.240.260.290.300.330.340.36 0.380.40 — Sheave/Mtr — B A A A A CCCC CCCC C — 661 RPM — 526 578 635 675 71
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Table 6 — Blower Data — 50HQP096 EXTERNAL STATIC PRESSURE (Pa) AIRFLOW (l/s) 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 BkW — 0.15 0.18 0.21 0.24 0.27 0.30 0.32 0.34 0.36 0.39 0.42 0.46 0.49 0.52 0.55 Sheave/Mtr — B BBAA AAAA CCCC CC 850 RPM — 500 552 604 655 700 745 780 820 855 890 915 945 970 995 1020 Turns Open — 4.5 3 1.5 5.5 4.5 3.5 2.5 2 1 4 3.5 3 2.5 2 1.5 BkW 0.19 0.21 0.24 0.28 0.31 0.34 0.38 0.41 0.44 0.47 0.50 0.53 0.55 0.58 0.61 — Sheave/Mtr BB AAAA AAA C CCCC C — 897
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Table 7 — Blower Data — 50HQP120 EXTERNAL STATIC PRESSURE (Pa) AIRFLOW (l/s) 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 BkW — 0.290.310.350.390.420.460.500.540.570.600.630.67 0.700.730.76 Sheave/Mtr — B B BBAA AAAA C C C C C 1038 RPM — 573 620 665 705 745 785 825 865 900 930 960 995 1020 1050 1075 Turns Open — 4.5 3.5 2.5 1.5 5.5 4.5 3.5 3 2 1.5 3.5 3 2.5 2 1.5 BkW 0.30 0.33 0.37 0.40 0.43 0.46 0.50 0.54 0.58 0.61 0.65 0.68 0.72 0.76 0.80 0.85 Sheave/Mtr BBB BAAA AAAA C C C C C 1
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Table 7 — Blower Data — 50HQP120 (cont) EXTERNAL STATIC PRESSURE (Pa) AIRFLOW (l/s) 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 BkW 0.79 0.85 0.89 0.94 0.99 1.04 1.08 1.12 1.17 1.23 1.29 1.35 — — — — Sheave/Mtr AAA AAAA C C C C C — — — — 1605 RPM 755 790 820 855 890 920 945 975 1005 1035 1060 1090 — — — — Turns Open 5 4.5 3.53 21.513.5 3 2 1.5 1 — — — — BkW 0.87 0.91 0.96 1.02 1.06 1.11 1.15 1.20 1.24 1.29 1.34 — — — — — Sheave/Mtr A A A A A A CCCC C — — — — — 1652 RPM 780 810 845
