York PCG4 User Manual

5 (1)
USER’S INFORMATION
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MANUAL
SINGLE PACKAGE AIR CONDITIONER/GAS HEAT
MODELS: PCG4
CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
THERMOSTATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 SPARK IGNITION DEVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CIRCULATING FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FOR YOUR SAFETY, READ BEFORE OPERATING . . . . . . . . . . . .3 WHAT TO DO IF YOU SMELL GAS . . . . . . . . . . . . . . . . . . . . . . . . . .3 START-UP INSTRUCTIONS - HEATING SYSTEM . . . . . . . . . . . . . . 3 SHUT-DOWN INSTRUCTION - TO TURN OFF GAS TO APPLIANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GENERAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 FILTER CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 OUTDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 BURNERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 TO CLEAN BURNERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 FLUE DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 CLEANING FLUE PASSAGES AND HEATING ELEMENTS . . . . .4 REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
BEFORE CALLING A SERVICEPERSON: . . . . . . . . . . . . . . . . . .4 REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 SOME EFFICIENCY DO'S AND DON'TS . . . . . . . . . . . . . . . . . . . .4
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CONTACT INFORMATION
• Go to website at www.york.com, then click on “Contact Us” and follow the instructions.
• Contact us by mail:
We recommend that the user read all sections of this manual and keep the manual for future reference.
WARNING
FIRE OR EXPLOSION HAZARD - Failure to follow safety warnings exactly could result in serious injury, death, or property damage.
— Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone (includ-
ing cell phone) in your building.
Leave the building immediately.
Immediately call your gas supplier from a neighbor’s phone. Fol-
low the gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
SAFETY
This is a safety alert symbol. When you see this symbol on labels or in manuals, be alert to the potential for personal injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION. DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in m inor or moderate injury. alert against unsafe practices and hazards involving only property dam­age.
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It is also used to
Johnson Controls Unitary Products
Consumer Relations
5005 York Drive
Norman, OK 73069
1. Make sure that the furnace area is clear and free of combustible materials, gasoline and other flammable vapors and liquids.
2. For proper operation of this furnace, air for combustion and ventila­tion is required. Make sure that these openings are not obstructed.
3. For lighting or shutting down this furnace, refer to the lighting instructions provided adjacent to the burners and also located in this manual.
4. A roll-out switch is provided in the burner compartment. This switch is a manual reset. If the furnace fails to operate, contact a qualified service agency.
5. Should the gas supply fail to shut off or if overheating occurs, shut off the gas valve to the furnace before shutting off the electrical sup­ply. Then call a qualified service technician.
6. Do not use this furnace if any part has been under water. A flood­damaged furnace is extremely dangerous. Attempts to use the fur­nace can result in fire or explosion. A qualified service agency should be contacted to inspect the furnace and to replace all gas controls, control system parts, electrical parts that have been wet or the furnace if deemed necessary.
7. Prior to each heating season inspect the flue gas vent and the return and supply air duct and ensure that the equipment is well supported and there are no signs of deterioration. The manufac­turer recommends that main burner, ignition device and controls are inspected by a qualified furnace technician before each heating season.
This heating/cooling unit is designed for outdoor use and can be installed anywhere from grade level to the roof. Electric air conditioning in the summer and gas heating in the winter - all from a single unit.
8. Do not allow snow to accumulate near the furnace where it could block the flue gas vent or the combustion air intake.
Johnson Controls Unitary Products 1183747-UUM-B-0415
1183747-UUM-B-0415
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New Graphic to be added later
AIR INTAKE HOOD
AIR INTAKE SCREEN
EXHAUST HOOD
A0284-001
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SYSTEM OPERATION
THERMOSTATS
Set your thermostat for either heating or cooling then set it for the desired temperature. DO NOT MOVE THE THERMOSTAT RAPIDLY ON AND OFF, OR BACK AND FORTH FROM HEAT TO COOL. THIS COULD DAMAGE YOUR EQUIPMENT.
Always allow at least 5 minutes between changes. Find the temperature that is most comfortable to you, and then LEAVE YOUR THERMOSTAT
ALONE. (Exception is for night or vacation set back to conserve energy).
Manually moving the thermostat up or down will not speed up tempera­ture changes in your rooms. This only causes the thermostat switch to function at your command rather than responding to room temperature.
Heat generated by devices other than the furnace may interfere with thermostat performance. Therefore, lamps, radios, television sets, etc. should not be placed near the thermostat.
SPARK IGNITION DEVICE
This unit is equipped with a spark ignition device. The control is designed to automatically light the burner each time the thermostat calls for heat.
WARNING
Flue hood surface and immediate area is designed to operate at high temperatures during the heating cycle. Special attention must be given to keep all human contact and debris away from this area.
FIGURE 1: Exhaust and Air Intake Hoods
CAUTION
Do not attempt to manually light the burners. Personal injury could result.
HEATING
When the thermostat calls for HEAT, the thermostat terminal “W” is energized, the control board checks for a open pressure switch and closed limit switches, then energizes the combustion air blower.
After combustion airflow is established, the air proving pressure switch closes, the ignitor begins to spark, the main valve opens and the burn­ers light.
The flame rod senses a flame and keeps the gas valve open. 30 seconds after the main burners light the circulating fan is energized
at the heating speed. When the thermostat is satisfied, terminal W is de-energized, de-ener-
gizing the ignition system and closing the gas valve. After a 15 second post purge timing period, the combustion air blower is
de-energized and the heat fan off timing begins. When the field-selected heat fan off timing is completed the circulating
fan is de-energized. If the limit switch or the rollout switch opens, the ignition system is de-
energized and the gas valve closes. The combustion blower and the cir­culating fan are energized.
The combustion blower remains energized for the 15 second post purge timing period if the limit switch or the rollout switch contacts reset (the rollout switch must be manually reset). The circulating fan remains energized for the selected heat delay off timing.
Normal operation of the system resumes.
WARNING
Incorrect installation of the flue vent hood could cause personal injury or property damage.
COOLING
When the thermostat calls for “COOL”, the thermostat signals the com­pressor and outdoor fan to run.
The circulating fan is immediately energized at cooling speed. When the thermostat is satisfied, the compressor and outdoor fan are
de-energized. After a cool fan off delay timing of 30 seconds the circulating fan is de-
energized.
CIRCULATING FAN
When the thermostat calls for “FAN”, the thermostat terminal signals the circulating fan to run at the selected fan speed.
If a call for “COOL” occurs, the circulating fan switches to the cool speed.
If a call for “HEAT” occurs, the circulating fan switches to heat speed after a 30 second delay.
When the thermostat ends the call for “FAN”, the circulating fan is de­energized.
INPUT
The correct heat capacity of the furnace is regulated by the burner ori­fices and the gas pressure. The proper orifices are furnished but the gas pressure regulator must be adjusted by the installing service per­son or gas company. This is a one-time adjustment.
WARNING
Should overheating occur, shut off the manual gas valve external to the appliance before shutting off the electrical supply.
2 Johnson Controls Unitary Products
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