Page 1: Table Of Contents
....... . . Fig. 1 - - Unit PDD4, PDS4 Connect Condensate Drain .
Page 2: Introduction
RECEIVING AND INSTALLATION words are used with the safety- -alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury Step 1 — Check Equipment or death. WARNING signifies hazards which could result in per- IDENTIFY UNIT sonal injury or death.
Page 3 A150552 Fig. 2 - - 24- -30 Unit Dimensions 51801230403 Specifications are subject to change without notice.
Page 4 A150553 Fig. 3 - - 36- -60 Unit Dimensions 51801230403 Specifications are subject to change without notice.
Page 5 SMALL/COMMON CURB SMALL SUPPLY BASE UNIT LARGE BASE RETURN UNIT UNIT PLACEMENT ON COMMON CURB SMALL OR LARGE BASE UNIT LARGE CURB A180216 CATALOG UNIT SIZE NUMBER IN. (mm) IN. (mm)* IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN.
Page 6: Slab Mount
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: Connect Condensate Drain
Training for operators of the lifting equipment should include, but the outlet of the trap is at least 1 in. (25 mm) lower than the not be limited to, the following: drain- -pan condensate connection. This prevents the pan from overflowing.
Page 8: Install Duct Connections
gas supply piping for 0.5 IN. W.C. maximum pressure drop. Never 5. Install an accessible, external, manual main shutoff valve in use pipe smaller than the 1/2- -in. (12.7 mm) FPT gas inlet on the gas supply pipe within 6 ft (1.8 m) of heating section. unit gas valve.
Page 9 1. Open all electrical disconnects before starting any service 5. Size all ductwork for maximum required airflow (either work. heating or cooling) for unit being installed. Avoid abrupt 2. Remove horizontal (metal) duct covers to access vertical duct size increases or decreases or performance may be (downflow) discharge duct knockouts in unit basepan.
Page 10 Table 1 – Physical Data Unit Size 24040 24060 30040 30060 36060 36090 Nominal Capacity --- ton Shipping Weight (lb) (kg) Compressor / Quantity Scroll / 1 Refrigerant R --- 410A Refrigerant Quantity (lb) Quantity (kg) Refrigerant Metering Device Indoor TXV, Outdoor Dual Accuraters Orifice OD (in) 0.032 (2) 0.032 (2)
Page 11 Table 1 - - Physical Data Cont’d) Unit Size 42060 42090 48090 48115 48130 60090 60115 60130 Nominal Capacity --- ton Shipping Weight (lb) (kg) Compressor / Quantity Scroll / 1 Refrigerant R --- 410A Refrigerant Quantity (lb) 11.2 11.2 11.9 11.9 11.9...
Page 12: Install Electrical Connections
Step 10 — Install Electrical Connections 3. Locate the black and yellow wires connected to the line side of the contactor. WARNING 4. Connect field L1 to black wire on connection 11 of the compressor contactor. 5. Connect field wire L2 to yellow wire on connection 23 of ELECTRICAL SHOCK HAZARD the compressor contactor.
Page 13: Balance Point Setting Thermidistat Or Hybrid Heat
PRE- -START- -UP HIGH VOLTAGE WARNING POWER LEADS POWER (SEE UNIT WIRING SUPPLY LABEL) FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury, EQUIP GR FIELD-SUPPLIED death or property damage. FUSED DISCONNECT 1. Follow recognized safety practices and wear protective CONTROL BOX goggles when checking or servicing refrigerant system.
Page 14: Check For Refrigerant Leaks
Step 2 — Unit Sequence of Operation WARNING a. CONTINUOUS FAN (1.) Thermostat closes circuit R to G energizing the FIRE, EXPLOSION HAZARD blower motor for continuous fan. Failure to follow this warning could result in personal injury, b. COOLING MODE death or property damage.
Page 15: Start- -Up Heating And Make Adjustments
Step 3 — Start- -up Heating and Make Adjust- 3. The induced- -draft motor will start. ments 4. On a call for heating, the main burner should light within 5 sec. of the spark being energized. If the burners do not light, CAUTION there is a 22- -sec.
Page 16: Adjust Gas Input
If the desired gas input is 115,000 Btuh, only a minor change in the CAUTION manifold pressure is required. Observe manifold pressure and proceed as follows to adjust gas UNIT DAMAGE HAZARD input: 1. Remove regulator cover screw over plastic adjustment Failure to follow this caution may result in reduced unit screw on gas valve (See Fig.
Page 17: Start- -Up Cooling And Make Adjustments
completes the control circuit. The direct- -spark ignition system WARNING cycles and the unit returns to normal heating operation. Table 5 – LED Indications EXPLOSION HAZARD STATUS CODE LED INDICATION Failure to follow this warning could Normal Operation result in death, serious personal injury, No Power Hardware Failure and/or property damage.
Page 18: Indoor Airflow And Airflow Adjustments
higher than proper liquid line temperature, or remove 2. Remove the current speed tap wire from the “GAS HEAT” refrigerant if actual temperature is more than 2F (1.1C) terminal on the interface fan board (IFB) (Fig. 14) and place lower than required liquid line temperature. vinyl cap over the connector on the wire.
Page 19: Continuous Fan Operation
fan speed and place desired speed tap wire on “HIGH” on the interface board. HEAT HIGH 4. Refer to airflow tables (Table 8 or 9) to determine allowable speeds for the dehumidification cooling fan speed. In Table 8 or 9, speeds that are not allowed for dehumidification cooling are shaded.
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Page 44 A150506 Fig. 15 - - 208/230- -1- -60 Connection Wiring Diagram 51801230403 Specifications are subject to change without notice.
Page 45 A150516 Fig. 15 Cont. - - 208/230- -1- -60 Ladder Wiring Diagram 51801230403 Specifications are subject to change without notice.
Page 46 A150507 Fig. 16 - - 208/230- -3- -60 Connection Wiring Diagram 51801230403 Specifications are subject to change without notice.
Page 47 A150517 Fig. 16 Cont. - - 208/230- -3- -60 Ladder Wiring Diagram 51801230403 Specifications are subject to change without notice.
Page 48 Superheat charging table is derived from optimum performance point. (95_F [35_C] outdoor ambient and (80_F [27_C] dry bulb; 67_F [19_C] wet bulb indoor condition.) Where a dash( --- ---) appears do not attempt to check charge or charge unit under these conditions using the superheat method. (Weigh in method should be used.) A150625 To properly check or adjust charge, conditions must be favorable for subcooling charging.
Page 49: Maintenance
MAINTENANCE 5. Check and inspect heating section before each heating season. Clean and adjust when necessary. To ensure continuing high performance and to minimize the 6. Check flue hood and remove any obstructions, if necessary. possibility of premature equipment failure, periodic maintenance Air Filter must be performed on this equipment.
Page 50: Flue Gas Passageways
(See Fig. 18) to the heat exchanger assembly. Inspect the Integrated heat exchangers. Gas Unit 3. Clean all surfaces, as required, using a wire brush. Controller (IGC) Limit Switch Auto Transformer fuses used on 460 Remove blower access panel (see Fig. 19). Limit switch is located volt units only.
Page 51: Outdoor Fan
between the coils. Be sure to flush all dirt and debris from the unit Outdoor Fan base. CAUTION 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 52: Gas Input
FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” SIZE Fig. 23 - - Fan Blade Position Gas Input 3. Apply ohm meter leads across switch. You should have continuity on a good switch. The gas input does not require checking unless improper heating NOTE: Because these switches are attached to refrigeration...
Page 53 OUTDOOR FAN RELAY DEFROST THERMOSTAT MUST BE CLOSED BEFORE DEFROST TIMER BEGINS T1 - ENABLES DEFROST Y OUTPUT TO PRESSURE SWITCHES AND CONTACTOR TIMER.MUST BE ENERGIZED FOR DEFROST TIMER TO START C - COMMON O - REVERSING VALVE SPEEDUP THERMOSTAT INPUTS A150622 Fig.
Page 54 C99097 Fig. 25 - - Refrigerant Circuit INDOOR COIL OUTDOOR COIL TXV in Metering Position HP S Bypass Position LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering De vice Arrow indicates direction of flo w C03011 Fig.
Page 55 INDOOR COIL OUTDOOR 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. 27 - - Typical Heat Pump Operation, Heating Mode The scroll compressor pumps refrigerant throughout the system by limited to, compressor replacement, repairing refrigerant leaks, the interaction of a stationary and an orbiting scroll.
Page 56: Troubleshooting
TROUBLESHOOTING temperature. Normal temperature range is closed at 32_  3_F (0  1.7_C) and open at 65_  5_F (18  2.8_C). Use the Troubleshooting Guides (See Tables 13- -15) if problems NOTE: The defrost thermostat must be located on the liquid side occur with these units.
Page 57 Table 13 – Troubleshooting Guide - - Cooling or Heat Pump Heating Mode SYMPTOM CAUSE REMEDY Power Failure Call power company. Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or control Compressor and Outdoor fan will not Replace component.
Page 58 Table 14 – Troubleshooting Guide–Heating SYMPTOM CAUSE REMEDY Water in gas line Drain. Install drip leg. No power to furnace Check power supply fuses, wiring or circuit breaker. Check transformer. No 24--v power supply to control circuit NOTE: Some transformers have internal over--current protection that requires a cool--down period to reset.
Page 59 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 GAS PIPING FOR LEAKS (WHERE APPLICABLE)
Page 60 Copyright 2018 International Comfort Products Replaces: 51801230402 Lewisburg, TN 37091 USA 51801230403 Specifications are subject to change without notice.

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