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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 supply.
Before
attempting
to
maintenance, turn the electrical power to unit OFF at
disconnect switch.
During blower operation, the ECM motor emits
energy that may interfere with pacemaker operation.
Interference is reduced by both the sheet metal cabinet
and distance.
Priming Condensate Trap
The condensate trap should be primed with water prior to
startup 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.
Page 50 of 74
WARNING
WARNING
CAUTION
perform
any
service
WARNING
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 again 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.
BEFORE PLACING THE UNIT INTO OPERATION
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 these units is equipped with a gas control
switch. Use only your hand to move the control 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
These units are equipped with an automatic 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 units with this ignition system.
If you do not follow these instructions exactly, a fire
or
or explosion may result causing property damage,
personal injury or death.
Gas Valve Operation
See Figure 57
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 that
automatically lights the burners. DO NOT try to light
the burners by hand.
5.
Remove the access panel.
6.
Move the gas valve switch to the OFF position. See
Figure 57.
7.
Wait five minutes to clear out any gas. If you then
smell gas, STOP! Immediately call the gas supplier
from a neighbor's phone. Follow the gas supplier's
instructions. If you do not smell gas, go to the next
step.
8.
Move gas valve switch to the ON position. See Figure
57. DO Not force.
Issue 2346
WARNING
508364-01
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