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Leak Check
After gas piping is completed, carefully check all piping
connections, (field and factory), for gas leaks. Use a soap
solution or other preferred means.
CAUTION
DO NOT use matches, candles, flame or other sources
of ignition to check for gas leaks.
The appliance must be isolated from the gas supply piping
system by closing its individual manual gas shutoff valve
during any pressure testing of the gas supply system at
test pressures equal to or greater than 1/2 psig (3.45kPa).
IMPORTANT
The heater and its individual shut off valve must be
disconnected from the gas supply piping system during
any pressure testing of that system at test pressures in
excess of 1/2 psig (3.45kPa). See figure 9.
NOTE -
In case emergency shutdown is required, shut
down main gas valve and disconnect main power to unit.
These devices should be properly labeled by the installer.
Unit Start-Up
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Install, operate and maintain unit in accordance with
manufacturer’s instructions to avoid exposure to fuel
substances or substances from incomplete combustion
which can cause death or serious illness.
WARNING
Electric shock hazard. Can cause injury
or death. Do not use this unit if any part
has been under water. Immediately 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.
WARNING
Danger of explosion. Can cause injury or
product or property damage. If overheating
occurs or if gas supply fails to shut off, shut
off the manual gas valve to the appliance
before shutting off electrical supply.
Oil residues, from manufacturing of the heat exchanger, may
cause the unit to produce smoke when first started; there is no
health hazard associated with this. As a precaution, open doors
and windows and alert people in the building there may be smoke
on start-up.
WARNING
Danger of explosion. Can cause injury or
product or property damage. You must follow
these instructions exactly.
BEFORE LIGHTING smell all around the appliance area
for gas. Be sure to smell next to the floor because some
gas is heavier than air and will settle on the floor.
Use only your hand to move the switch. Never use tools. If
the switch will not move by hand, do not try to repair it, call a
qualified service technician. Force or attempted repair may
result in a fire or explosion.
OPERATION OF WHITE RODGERS 36H SERIES VALVE
(FIGURE 11) AND WHITE RODGERS 36G SERIES GAS
VALVE (FIGURE 12)
NOTE -
STOP! Read the safety information at the begin-
ning of this section.
1 - Set thermostat to lowest setting.
2 - Turn off all electrical power to appliance.
3 - This appliance is equipped with an ignition device
which automatically lights burners.
DO NOT attempt
to light the burners manually.
4 - Move switch to OFF.
5 - 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.
6 - Move switch to
ON.
7 - Turn on all electric power to unit.
8 - Set thermostat to desired setting.
9 - If appliance still will not operate, follow the instructions
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and call your service
technician or gas supplier.
WARNING
Electric shock hazard. Can cause injury or
death. Before attempting to perform any
service or maintenance, turn the electrical
power to unit OFF at disconnect switch(es).
Unit may have multiple power supplies.
Return Air Temperature Requirements:
The following return air temperatures must be maintained for op-
timum unit operation and extended life of the heat exchanger.
Failure to comply with the conditions will void the warranty.
Minimum return air temperature for units built with aluminized
steel heat exchanger: 55°F
Minimum return air temperature for units built with stainless steel
heat exchanger: 45°F
Maximum return air temperature: 85°F