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BURNER IGNITION
Unit is equipped with a direct spark ignition 100 percent

lockout system. Ignition module is located in the control box

(See Fig. 15).Module contains a self--diagnostic LED.

During servicing, refer to label diagram for LED

interpretation.
If lockout occurs, unit may be reset by either momentarily

interrupting power supply to unit or by turning selector

switch to OFF position at the thermostat.
MAIN BURNERS
At the beginning of each heating season, inspect for

deterioration or blockage due to corrosion or other causes.

Observe the main burner flames and adjust, if necessary.
Removal of Gas Train
To remove the gas train for servicing:

1. Shut off main gas valve.
2. Shut off power to unit and install lockout tag.
3. Remove unit access panel (See Fig. 16).
4. Disconnect gas piping at unit gas valve.
5. Remove wires connected to gas valve. Mark each wire.
6. Remove ignitor and sensor wires at the ignitor module.
7. Remove the mounting screw that attaches the burner

rack to the unit base (See Fig. 15).

8. Slide the burner rack out of the unit (See Fig. 15 and

18).

9. To reinstall, reverse the procedure outlined above.

OUTDOOR COIL, INDOOR COIL, AND CONDENSATE

DRAIN PAN
Inspect the condenser coil, evaporator coil, and

condensate drain pan at least once each year.
The coils are easily cleaned when dry; therefore, inspect

and clean the coils either before or after each cooling

season. Remove all obstructions, including weeds and

shrubs, that interfere with the airflow through the condenser

coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,

clean the coils with a vacuum cleaner, using the soft brush

attachment. Be careful not to bend the fins. If coated with oil

or grease, clean the coils with a mild detergent and water

solution. Rinse coils with clear water, using a garden hose.

Be careful not to splash water on motors, insulation, wiring,

or air filter(s). For best results, spray condenser coil fins

from inside to outside the unit. On units with an outer and

inner condenser coil, be sure to clean between the coils. Be

sure to flush all dirt and debris from the unit base.
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. Flush the

pan and drain trough with clear water. Do not splash water

on the insulation, motor, wiring, or air filter(s). If the drain

trough is restricted, clear it with a “plumbers snake” or

similar probe device.

FIGURE 15

Blower Housing and Flue Collector Box

INDUCED DRAFT MOTOR MOUNT

FLUE

COLLECTOR

BOX

BLOWER

HOUSING

BURNER

RACK

MOUNTING

SCREW

ROLLOUT

SWITCH

IGNITION MODULE

FIGURE 16

Unit Access Panel

FRONT

ACCESS PANEL

FIGURE 17

Removal of Motor and Blower Wheel

BLOWER

HOUSING

2 SETSCREWS

(HIDDEN)

Summary of Contents for PGN324

Page 1: ...densate Drain 8 Install Flue Hood 8 Install Gas Piping 8 Install Duct Connections 10 Install Electrical Connections 11 PRE START UP 12 START UP 13 Check for Refrigerant Leaks 13 Start Up Heating Make...

Page 2: ...th the safety alert symbol DANGER identifies the most serious hazards which will result in serious injury or death WARNING signifies a hazard which could result in serious injury or death CAUTION is u...

Page 3: ...essional Engineering Certificate if required ROOFCURB Install accessory roof curb in accordance with instructions shipped with curb Install insulation cant strips roofing and flashing Ductwork must be...

Page 4: ...QUIRED CLEARANCES INCHES mm BETWEEN UNITS POWER ENTRY SIDE 42 00 1066 8 UNIT AND UNGROUNDED SURFACES POWER ENTRY SIDE 36 00 914 0 UNIT AND BLOCK OR CONCRETE WALLS AND OTHER GROUNDED SURFACES POWER ENT...

Page 5: ...OF UNIT 0 50 12 7 ELECTRIC HEAT PANEL 36 00 914 4 NEC REQUIRED CLEARANCES INCHES mm BETWEEN UNITS POWER ENTRY SIDE 42 00 1066 8 UNIT AND UNGROUNDED SURFACES POWER ENTRY SIDE 36 00 914 0 UNIT AND BLOCK...

Page 6: ...t staff should handle and install this equipment When working with this equipment observe precautions in the literature on tags stickers and labels attached to the equipment and any other safety preca...

Page 7: ...traps Remove corner posts screws and rigging brackets then reinstall screws After the unit is placed on the roof curb or mounting pad remove the top crating FIGURE 5 Unit Corner Weight lbs and Rigging...

Page 8: ...of the blower compartment see Fig 8 9 Remove the return duct cover to locate the flue hood Place flue hood assembly over flue panel Orient screw holes in flue hood with holes in the flue panel 3 Secu...

Page 9: ...htly opening the ground joint union Table 1 PIPING SIZES NOMINAL IRON PIPE SIZE IN INTERNAL DIAMETER IN LENGTH OF PIPE FT 10 20 30 40 50 60 70 80 90 100 125 150 175 200 1 2 622 175 120 97 82 73 66 61...

Page 10: ...ided duct covers Ensure opening is air and water tight 7 After completing unit conversion perform all safety checks and power up unit NOTE The design and installation of the duct system must be in acc...

Page 11: ...in a conduit until they enter the duct panel conduit termination at the duct panel must be watertight The unit must have a separate electrical service with a field supplied waterproofdisconnectswitchm...

Page 12: ...any electric power to unit unless compressor terminal cover is in place and secured 3 Do not remove compressor terminal cover until all electrical sources are disconnected and tagged 4 Relieve and rec...

Page 13: ...ND FAN HUB MOTOR SHAFT 1 2 START UP Step 1 CHECK FOR REFRIGERANT LEAKS Proceed as follows to locate and repair a refrigerant leak and to charge the unit 1 Locate leak and make sure that refrigerant sy...

Page 14: ...utto the unitisdetermined bymeasuring thegas flow at the meter or by measuring the manifold pressure Measuring the gas flow at the meter is recommended for natural gas units The manifold pressure must...

Page 15: ...clockwise to increase manifold pressure or turn adjusting screw counterclockwise to decrease manifold pressure 6 Replace cover screw 7 Turn off gas to unit Remove manometer from pressure tap Replace p...

Page 16: ...16 FIGURE 14 PGN324 60 Wiring Diagram...

Page 17: ...hen operating the unit Do not operate the compressor when the outdoor temperature is below 40 F 4 4 C unless accessory low ambient kit is installed Do not rapid cycle the compressor Allow 5 minutes be...

Page 18: ...t in Cooling Mode and let unit run until system pressures stabilize 4 Measure and record the following a Outdoor ambient air temperature F C db b Suction line temperature F C c Suction low side pressu...

Page 19: ...close and complete the circuit through compressor motor COMP to condenser outdoor fan motor OFM Both motors start instantly 3 The set of normally open contacts of energized relay BM close and complete...

Page 20: ...housing before disassembly e Loosen setscrew s that secures wheel to motor shaft remove screws that secure motor mount brackets to housing and slide motor and motor mount out of housing 2 Remove and c...

Page 21: ...easily cleaned when dry therefore inspect and clean the coils either before or after each cooling season Remove all obstructions including weeds and shrubs that interfere with the airflow through the...

Page 22: ...eplace all the panels Start the unit and observe at least one complete cooling cycle to ensure proper operation If discrepancies are observed in operating cycle or if a suspected malfunction has occur...

Page 23: ...9 304 301 286 290 286 280 CFM 935 885 820 757 686 583 423 263 Heating Rise oF _C 32 18 34 19 37 20 40 22 44 24 NA NA NA NA Medium1 Watts 411 405 398 390 379 357 357 345 327 CFM 1195 1155 1100 1028 957...

Page 24: ...53 29 56 31 60 33 66 36 High Watts 765 746 730 709 690 664 642 624 600 CFM 1860 1805 1751 1685 1620 1541 1468 1370 1265 Heating Rise oF _C NA NA NA 40 22 42 23 44 24 46 26 49 27 53 30 PGN348090 25 55...

Page 25: ...6 CFM 2184 2109 2036 1963 1886 1812 1729 1647 1496 Heating Rise oF _C 39 22 41 23 42 24 44 24 46 25 48 26 50 28 52 29 58 32 PGN360130 40 70 22 39 Low1 Watts 786 769 754 736 722 705 684 658 616 CFM 202...

Page 26: ...n start capacitor Determine cause and replace Faulty outdoor fan motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air f...

Page 27: ...des SYMPTOM CAUSE REMEDY Hardware failure LED OFF Loss of power to control module IGC Check 5 amp fue son IGC power to unit 24 v cir cuit breaker and transformer Units without a 24 v circuit breaker h...

Page 28: ...ting unit power replace the IGC Temporary software lockout LED 9 flashes Electrical interference impeding IGC soft ware Reset 24 v to control board or turn thermostat off then on again Fault will auto...

Page 29: ...AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS III START UP ELECTRICAL SUPPLY VOLTAGE __________________________________ COMPRESSOR AMPS_________________________________ INDOOR...

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