FLUE PASSAGEWAY AND FLUE BOX
The flue passages and flue box should be inspected and cleaned
prior to each heating season. The sequence of operation should
be as follows:
1)
Turn off both electrical and gas supply to unit.
2)
Disconnect combustion air inducer wiring.
3)
Remove screws securing flue box to unit. Remove flue
box. If necessary, remove inducer assembly from flue box.
Clean flue box with wire brush.
4)
Remove turbulator retention bracket and turbulators. Clean
turbulators with wire brush.
5)
Remove burners as described in Burners" section.
6)
Clean tubes with a wire brush.
7)
Reassemble unit. The combustion air and flue box gaskets
should also be replaced during reassembly.
8)
Restore electrical power and gas supply. Follow lighting
instructions to light unit. Check operation of unit.
COMBUSTION AIR INDUCER
Under normal operating conditions, the combustion air inducer
should be checked and cleaned prior to the heating season with
the power supply disconnected. Use a small brush to clean
inducer wheel.
ELECTRICAL
1)
Check all wiring for loose connections.
2)
Check for correct voltage at unit (unit operating).
3)
Check amperage draw.
FLUE AND CHIMNEY
Check all vent and vent connector joints for tightness. Ensure
that connections are sealed and that there are no blockages.
FAILURE TO OPERATE
If unit fails to operate check the following:
1)
Is thermostat calling for heat?
2)
Is main disconnect closed?
3)
Is there a breaker tripped or a fuse blown?
4)
Is gas turned on at meter?
5)
Is manual shutoff valve open?
6)
Is unit ignition system in lock out? If unit locks out
again, call service technician to inspect unit.
7)
Is pressure switch closed? Obstructed flue will cause unit
to shut off at pressure switch. Check flue passage and
outlet.
SAFETY SHUT−OFF VALVE TEST
The safety shut−off valve test procedure is as follows:
1)
Turn off the manual gas valve.
2)
Set the thermostat to call for heat.
3)
System begins normal sequence of operation.
4)
After approximately 30 seconds (pre purge period) the
LED will fast flash indicating the gas valve is powered.
5)
After 10 seconds, the gas valve closes and steps 4 and 5
will repeat two additional times before locking out the gas
valve, which will be indicated by two flashes on the LED.
6)
To restart the system, de-energize the thermostat call for
heat and follow the operating instructions under Unit
Start−Up and Operation.
REPAIR PARTS
When ordering repair parts, include the complete unit model
number listed on the unit rating plate. For example:
FOAN−45A−1−1−1.
START−UP AND PERFORMANCE CHECKLIST
Job Name:
Job No.:
Date:
Job Location:
City:
State/Province:
Installer:
City:
State/Province:
Unit Model No.:
Serial No.:
Service Technician:
Electrical Connections Tight?
Air Shutters Properly Adjusted (If Installed)?
Supply Voltage
Flue Connections Tight?
Blower Motor Lubrication O.K.?
Fan Timer Operation Checked?
Gas Piping Connections Tight & Leak−Tested?
THERMOSTAT
Blower Motor Amps
Furnace Btu Input
Calibrated?
Heat Anticipator Properly Set?
Line Pressure
Manifold Pressure
w.c.
Level?
19
