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LDAP-IOM (01-22) 207733-A
•
To manually override the fan control, the heater may be tuned off at the circuit breaker in the main electrical panel
or a field-installed electrical box with a SPST switch can be located near the wall thermostat with the switch wired
in series with the fan control .
NOTE: The air destratification fan control feature can be a benefit in summertime to improve work-
ing conditions by alleviating stagnant air conditions and creating a cooling effect for occupants.
OPERATION
⚠ DANGER ⚠
• For your safety, read before operating. If you do not follow these instructions exactly, a fire or
explosion may result, causing property damage, personal injury, or loss of life.
• This appliance does not have a pilot. It is equipped with an ignition device that automatically
lights the burner(s). Do not try to light the burner(s) by hand.
• Before operating, 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.
• 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 in your building.
•
Leave the building immediately.
•
Immediately call your gas supplier from a phone remote from the building. Follow the gas
supplier’s instructions.
•
If you cannot reach your gas supplier, call your fire department.
• Use only your hand to turn the gas control ON/OFF knob on the gas valve. Never use tools. If the
valve ON/OFF knob will not turn by hand, do not try to repair it. Call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
• Should overheating occur, or the gas supply control system fail to shut off the flow of gas, turn
off the manual gas valve to the appliance before shutting off the electrical supply.
• Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the appliance and to replace any part of the control system and any gas
control which has been under water.
• All components of a gas supply system must be leak tested prior to placing equipment in service.
NEVER TEST FOR LEAKS WITH AN OPEN FLAME. Failure to comply could result in personal
injury, property damage, or death.
Pre-Startup Checklist
Check the following
before
startup:
Check to ensure that all screws used to secure shipping brackets have been re-installed in heater cabinet
Check suspension—unit must be secure and level
Check to ensure that clearances from combustibles are in accordance with
Check vent system to ensure that it is installed in accordance with
section
Check piping for leaks and proper gas line pressure and bleed trapped air from gas lines (refer to
section)
Check electrical wiring—ensure that all wire gauges are as recommended—verify that fusing or circuit breakers
are adequate for load use
Check polarity—verify that line voltage exists between black L1 wire and earth ground
If installation elevation is >6,000 feet (>1,830 meters), replace pressure switch in accordance with
section
