VII. Step 7
Replace the burner access panel.
VIII. Step 8
Turn on the electrical supply to unit.
IX. Step 9
Open the manual gas valve.
X. Step 10
Set room thermostat selector slightly above room tempera- ture to start unit. The
WARNING: If the main burners fail to light, or the blower fails to start, shut down gas heating section and call your dealer for service. Failure to follow these requirements could result in serious injury or death.
XI. Step 11
Set the temperature selector on the room thermostat to de- sired setting.
TO SHUT UNIT OFF
WARNING:
1.Do not turn off the electrical power to unit with- out first turning off the gas supply.
2.Never attempt to manually light the main burners on unit with a match, lighter, or any other flame. If the electric sparking device fails to light the main burners, refer to the following shutdown procedures. Call your dealer as soon as possible.
Failure to follow these procedures could result in seri- ous fire or serious injury or death.
Refer to Fig. 3 while proceeding with the following steps:
I. Step 1
Set room thermostat to lowest temperature setting and set SYSTEM switch to OFF position.
II. Step 2
Close the external manual gas valve.
III. Step 3
Turn off the electrical power supply to unit and install lock- out tag.
IV. Step 4
Remove the burner access panel.
V. Step 5
Move the control on the gas valve to the OFF position.
VI. Step 6
Replace the burner access panel.
VII. Step 7
If unit is being shut down because of a malfunction, call your dealer as soon as possible.
If unit is being shut down because the heating season has ended, restore electrical power to the unit to ensure opera- tion of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve to the unit before shutting off the electrical supply.
Do not use this unit if any part has been under water. Imme- diately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas control which has been under water.
MAINTAINING YOUR UNIT
All maintenance should be handled by skilled, experienced personnel. Your dealer can help you establish a standard procedure.
For your safety, keep the unit area clear and free of combus- tible materials, gasoline, and other flammable liquids and vapors.
To ensure proper functioning of the unit, flow of combustion and ventilating air must not be prevented from reaching the unit.
To ensure proper airflow, clearance to the condenser coil should be 36 in. on one side and 12 in. on the other. Either side may receive the greater clearance. A clearance of 1 in. from the bottom of the unit to combustible surfaces must be maintained when not using a roof curb. A clearance of 0 in. from the bottom of the base rail to combustible surfaces must be maintained when not using a roof curb. A
A clearance of 42 in. should be allowed on the unit control box side. When ungrounded surfaces are present, allow a
Clearance of 48 in. must be maintained between flue side and combustible surfaces.
ROUTINE MAINTENANCE AND CARE
FOR THE EQUIPMENT OWNER
Consider the following information before maintaining or servicing equipment:
WARNING:
1.TURN OFF GAS SUPPLY AND THEN ELEC- TRICAL POWER TO YOUR UNIT BEFORE SERVICING OR PERFORMING MAINTE- NANCE.
2.DO NOT turn off electrical power to this unit without first turning off the gas supply.
3.When removing access panels or performing maintenance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care has been taken to reduce sharp edges to a minimum, be extremely care- ful when handling parts or reaching into the unit.
Failure to follow these instructions could result in seri- ous fire or serious injury or death.
I. AIR FILTERS
Air filter(s) should be checked at least every 3 or 4 weeks and changed or cleaned when necessary. Table 1 indicates the correct filter size for your unit. See Fig. 4 for filter access door location.
