Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS 15 SEER 2- -Stage Package Heat Pump System with R- -410A PHR524- -60 1 & 3 Phase IMPORTANT: Effective January 1, 2015, all split system and packaged air conditioners must be installed pursuant to applicable regional efficiency standards issued by the Department of Energy. NOTE: Read the entire instruction manual before starting the installation.
Page 2: Introduction
prevent loss or damage, leave all parts in original packages until WARNING installation. If the unit is to be mounted on a curb in a downflow application, ELECTRICAL SHOCK HAZARD review Step 7 to determine which method is to be used to remove the downflow panels before rigging and lifting into place.
Page 3 PHR5...
Page 4 PHR5...
Page 5 Dashed lines show cross support location for large basepan units. HVAC unit HVAC unit basepan base rails Sealing Gasket Roofcurb Anchor screw Wood nailer* Flashing field supplied Roofcurb* Insulation (field supplied) Roofing material field supplied Cant strip field supplied SMALL/COMMON CURB A09413 *Provided with roofcurb A09090...
Page 6: Provide Clearances
CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS MINIMUM HEIGHT: 36"...
Page 7: Inspection
OPTIONAL OPTIONAL RETURN SUPPLY OPENING OPENING MAXIMUM ALLOWABLE DIFFERENCE in. (mm) 2˝ (6.35) (6.35) (6.35) (50.8mm) A07925 Fig. 6 - - Unit Leveling Tolerances INSPECTION EVAP. COIL COND. COIL A07926 Prior to initial use, and at monthly intervals, all rigging shackles, Fig.
Page 8: Configuring Units For Downflow (Vertical) Discharge
ensure weather- -tight and airtight seal. When electric heat is duct size increases or decreases or performance may be affected. installed, use fireproof canvas (or similar heat resistant material) 6. Adequately insulate and weatherproof all ductwork located connector between ductwork and unit discharge connection. If outdoors.
Page 9: Install Electrical Connections
Step 8 — Install Electrical Connections HIGH VOLTAGE WARNING POWER LEADS POWER (SEE UNIT WIRING SUPPLY LABEL) 3-PHASE SHOWN 1-PHASE USES ELECTRICAL SHOCK HAZARD TWO POWER EQUIP GR LEADS FIELD-SUPPLIED Failure to follow this warning could result in personal FUSED DISCONNECT injury or death.
Page 10: Transformer Protection
If an accessory electric heater is installed, low voltage leads from supplemental heat, connect white and violet wires shown in Fig. 10 heater must be connected to factory supplied control leads from to second stage heat field wire. Indoor Fan Board P4 connector. Some electric heaters have four control wires (plus common wire).
Page 11: Pre- -Start- -Up
PRE- -START- - UP START- - UP Step 1 — Check Cooling and Heating Control WARNING Operation Start and check the unit for proper control operation as follows: ENVIRONMENTAL, FIRE, EXPLOSION, 1. Place room thermostat SYSTEM switch or MODE control ELECTRICAL SHOCK HAZARD in OFF position.
Page 12: Start- -Up Adjustments
Step 3 — Start- -Up Adjustments 6. Compare actual liquid line temperature with desired liquid line temperature. Using a tolerance of 2F (1.1C), add Complete the required procedures given in the Pre- -Start- -Up refrigerant if actual temperature is more than 2F (1.1C) section before starting the unit.
Page 13: Low Stage Cooling
The evaporator fan motor is factory set to provide 5 different fan c. Electric Heating Mode speeds to choose from for the various operation modes (see Table (1.) Thermostat closes circuit R to W2 or W3, and R to 4). All models are factory- -shipped for nominal high stage and low G.
Page 14 HIGH LOW COM H S C I 2 4 V M OTO R TA P S R1 D1 R7 R9 D11 D6 D4 Z2 R2 R5 R3 R6 C3 W3 W3 W2 W2 6 7 4 DH W3 W2 Y2 G Y1 C H K 6 1 E A 0 2 3 Shunt in dehumidification...
Page 15 OUTDOOR COIL INDOOR COIL TXV in Bypass Position HP S Metering Position LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering De vice Arrow indicates direction of flo w C03012 Fig. 13 - - Typical Heat Pump Operation, Heating Mode OUTDOOR COIL INDOOR COIL TXV in Metering...
Page 16 PHR5 Table 5 – Dry Coil Air Delivery* - - Horizontal and Downflow Discharge - - Unit PHR524- -60 208/230 VAC Models EXTERNAL STATIC PRESSURE (IN. W.C.) MOTOR WIRE UNIT SPEED COLOR Low¹ Blue 0.09 0.10 0.10 0.11 0.12 Med-Low Pink 0.12 0.12...
Page 17 Table 5 - - Dry Coil Air Delivery* - - Horizontal and Downflow Discharge (CONT)- - Unit PHR524- -60 208/230 VAC Model EXTERNAL STATIC PRESSURE (IN. W.C.) MOTOR WIRE UNIT SPEED COLOR 1097 Blue 0.12 0.11 0.10 0.11 0.12 0.13 0.13 0.14 0.15...
Page 18 PHR5 Table 6 – Wet Coil Pressure Drop (IN. W.C.) UNIT STANDARD CFM (SCFM) SIZE 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 0.03 0.04 0.05 0.06 0.07 0.06 0.07 0.07 0.08 0.09 0.06 0.07 0.08 0.09 0.10...
Page 19 Table 9 – Electric Heat Pressure Drop Tables (IN. W.C.) Small Cabinet: 24- -30 STANDARD CFM (SCFM) STATIC 1000 1100 1200 1300 1400 1500 1600 5 kW 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 10 kW 0.00 0.00 0.00...
Page 20 A13144 Fig. 15 - - Connection Wiring Diagram 208/230- -1- -60 51801210403 Specifications are subject to change without notice.
Page 21 A13145 Fig. 12 Cont. - - Ladder Wiring Diagram 208/230- -1- -60 51801210403 Specifications are subject to change without notice.
Page 22 A13146 Fig. 16 - - Connection Wiring Diagram 208/230- -3- -60 51801210403 Specifications are subject to change without notice.
Page 23 A13147 Fig. 13 Cont. - - Ladder Wiring Diagram 208/230- -3- -60 51801210403 Specifications are subject to change without notice.
Page 24 A170012 Fig. 17 - - Cooling Charging Chart 51801210403 Specifications are subject to change without notice.
Page 25: Maintenance
MAINTENANCE Air Filter IMPORTANT: Never operate the unit without a suitable air filter To ensure continuing high performance, and to minimize the in the return- -air duct system. Always replace the filter with the possibility of premature equipment failure, periodic maintenance same dimensional size and type as originally installed.
Page 26: Outdoor Coil, Indoor Coil, And Condensate Drain Pan
FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” SIZE 10.0 Fig. 18 - - Fan Blade Position Inspect the drain pan and condensate drain line when inspecting the coils. Clean the drain pan and condensate drain by removing all foreign matter from the pan.
Page 27: Refrigerant Circuit
After inspecting the electrical controls and wiring, replace the exists. If switch must be removed, remove and recover all system access panels (see Fig. 19). Start the unit, and observe at least one charge so that pressure gauges read 0 psi (0 Pa). Never open system complete heating cycle and one complete cooling cycle to ensure without breaking vacuum with dry nitrogen.
Page 28: System Information
Step 5 — System Information readily. POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants. Take all necessary Loss of Charge Switch precautions to avoid exposure of the oil to the atmosphere. The loss of charge switch is a protective device wired into control Servicing Systems on Roofs with Synthetic Materials circuit (low voltage).
Page 29 Table 10 – Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer or high--pressure, Replace component loss--of--charge or low--pressure switch Compressor and outdoor fan will not start Insufficient line voltage Determine cause and correct Incorrect or faulty wiring...
Page 30 R- -410A QUICK REFERENCE GUIDE R- -410A refrigerant operates at 50- -70 percent higher pressures than R- -22. Be sure that servicing equipment and replacement components are designed to operate with R- -410A. R- -410A refrigerant cylinders are rose colored. S R- -410A refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright position.
Page 31 START- -UP CHECKLIST (Remove and Store in Job Files) I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: II. PRESTART- -UP (Insert check mark in box as each item is completed) ( ) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT ( ) REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS ( ) CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS ( ) CHECK THAT INDOOR (EVAPORATOR) AIR FILTER IS CLEAN AND IN PLACE...
Page 32 Copyright 2017 International Comfort Products Replaces: 51801210402 Lewisburg, TN 37091 USA 51801210403 Specifications are subject to change without notice.

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