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Unit Start-Up
FOR YOUR SAFETY READ BEFORE OPERATING
Do not use this furnace if any part has been underwater.
A flood-damaged furnace is extremely dangerous.
Attempts to use the furnace can result in fire or
explosion. Immediately call a qualified service
technician to inspect the furnace and to replace all gas
controls, control system parts, and electrical parts that
have been wet or to replace the furnace, if deemed
necessary.
Danger of explosion. Can cause
injury or product or property damage.
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 power.
Before attempting to perform any service or maintenance,
turn the electrical power to unit OFF at disconnect
switch.
BEFORE LIGHTING the unit, smell all around the furnace
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
The gas valve on the unit is equipped with a gas control
switch (lever). Use only your hand to move switch. Never
use tools. If the switch will not move by hand, do not try
to repair it. Force or attempted repair may result in a fire
or explosion.
Placing the furnace into operation:
This furnace is equipped with an automatic hot surface
ignition system. Do not attempt to manually light burners
on this furnace. Each time the thermostat calls for heat, the
burners will automatically light. The ignitor does not get hot
when there is no call for heat on these units.
507582-02
WARNING
WARNING
CAUTION
Priming Condensate Trap
The condensate trap should be primed with water prior to
start-up to ensure proper condensate drainage. Either pour
10 fl. oz. (300 ml) of water into the trap, or follow these steps
to prime the trap:
1. Follow the lighting instructions to place the unit into
operation.
2. Set the thermostat to initiate a heating demand.
3. Allow the burners to fire for approximately 3 minutes.
4. Adjust the thermostat to deactivate the heating demand.
5. Wait for the combustion air inducer to stop. Set the
thermostat to initiate a heating demand and again allow
the burners to fire for approximately 3 minutes.
6. Adjust the thermostat to deactivate the heating demand
and wait for the combustion air inducer to stop. At this
point, the trap should be primed with sufficient water
to ensure proper condensate drain operation.
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
Gas Valve Operation
1. STOP! Read the safety information at the beginning of
this section.
2. Set the thermostat to the lowest setting.
3. Turn OFF all electrical power to the unit.
4. This furnace is equipped with an ignition device which
automatically lights the burners. Do not try to light the
burners by hand.
5. Remove the heating compartment access panel.
6. Move gas valve switch to OFF. See Figure 57.
7. Wait five minutes to clear out any gas. If you then
smell gas, STOP! Immediately call your gas supplier
from a neighbor's phone. Follow the gas supplier's
instructions. If you do not smell gas go to next step.
8. Move gas valve switch to ON. See Figure 57.
Issue 1621
WARNING
Page 47 of 59
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