Trane OA1D OA2D OA3D (Indirect Gas-Fired/Electric Heat) Manuale Di Manutenzione
36
OAU-SVX01E-EN
Start-Up
Indirect Gas-Fired Heating
Start-Up
Start-Up
Notes:
1.
This furnace module does not have a pilot. It is
equipped with a direct spark ignition device that
automatically lights the gas burner. DO NOT try to light
burners by hand.
equipped with a direct spark ignition device that
automatically lights the gas burner. DO NOT try to light
burners by hand.
2. BEFORE OPERATING, leak test all gas piping up to
heater gas valve. Smell around the unit area for gas. If
gas is smelled, do NOT attempt to place heater in
operation until source of gas leak is identified and
corrected.
gas is smelled, do NOT attempt to place heater in
operation until source of gas leak is identified and
corrected.
3. Use only hand force to operate the gas control lever to
the “ON” position. NEVER use tools. If lever does not
operate by hand, replace gas valve prior to staring the
unit. Forcing or attempting to repair the gas valve may
result in fire or explosion.
operate by hand, replace gas valve prior to staring the
unit. Forcing or attempting to repair the gas valve may
result in fire or explosion.
4. Do not attempt to operate unit, if there is indication that
any part or control has been under water. Any control
or component that has been under water must be
replaced prior to trying to start the unit.
replaced prior to trying to start the unit.
for additional
information.
Tools Required
•
Voltage Meter (
μA)
•
Amp Meter
•
Gas Manometer (2)
•
Temperature Probe
•
Small Refrigeration Screwdriver
•
5/16-in. Nut Driver
•
3/16-in. Allen Wrench
•
3/32-in. Allen Wrench
•
1/8-in. NPT barbed pressure taps (3)
•
1/2-in. Open End Wrench
Start-Up Procedure
1. Check Inlet Gas Pressure
Check to insure the gas pressure supplied to the unit is
within the pressure requirement listed on the
nameplate. DO NOT expose gas controls to pressures
above 1/2 psi (14 in. wc). The gas supply line should be
installed with an external manual shutoff and pressure
tap.
within the pressure requirement listed on the
nameplate. DO NOT expose gas controls to pressures
above 1/2 psi (14 in. wc). The gas supply line should be
installed with an external manual shutoff and pressure
tap.
2. Verify Indoor Fan Failure Switch Operation
Indoor Fan Failure Switch (IFFS) is located in the unit
electrical control compartment above the heater.
Indoor fan failure switch will fail if not proven within
30 seconds of call for indoor fan—ON.
electrical control compartment above the heater.
Indoor fan failure switch will fail if not proven within
30 seconds of call for indoor fan—ON.
All unit air filters must be clean before proceeding to
properly complete this verification.
properly complete this verification.
Important:
If the unit air filters are not clean, unit
performance could be affected. Remove
and clean or replace air filters as required
prior to proceeding with the burner
pressure testing.
performance could be affected. Remove
and clean or replace air filters as required
prior to proceeding with the burner
pressure testing.
In the event that the pressure switch fails to operate,
check the pick-up tubes to be certain that the tubes are
not obstructed and confirm that the tube connections
to IFFS are tight and secure.
check the pick-up tubes to be certain that the tubes are
not obstructed and confirm that the tube connections
to IFFS are tight and secure.
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures
recommended in this section of the manual could result
in exposure to electrical, mechanical or other potential
safety hazards. Always refer to the safety warnings
provided throughout this manual concerning these
procedures. When possible, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks.
recommended in this section of the manual could result
in exposure to electrical, mechanical or other potential
safety hazards. Always refer to the safety warnings
provided throughout this manual concerning these
procedures. When possible, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks.
Do not attempt the following procedures until all
electrical and gas connections to the unit have been
completed and the outdoor air damper and evaporator
fan operation have been verified and are operating
correctly.
electrical and gas connections to the unit have been
completed and the outdoor air damper and evaporator
fan operation have been verified and are operating
correctly.
Failure to follow all of the safety warnings provided
could result in death or serious injury.
could result in death or serious injury.
WARNING
Hazard of Explosion!
Never use an open flame to detect gas leaks. It could
result in an explosion. Use a leak test solution for leak
testing. Failure to follow recommended safe leak test
procedures could result in death or serious injury or
equipment or property-only-damage.
result in an explosion. Use a leak test solution for leak
testing. Failure to follow recommended safe leak test
procedures could result in death or serious injury or
equipment or property-only-damage.