Install Instructions

25
VII. START-UP AND CHECKOUT (continued)
E. CHECK PILOT BURNER FLAME.
See Figure 22.
The pilot produces three (3) ames. The center ame
should be steady, medium hard blue enveloping 3/8 to
a ½ inch of sensing probe.
F. CHECK THERMOSTAT OPERATION. Raise and
lower temperature setting as required to start and stop
burners.
G. CHECK HIGH LIMIT CONTROL. Jumper
Thermostat connections in boiler wiring harness. Allow
burners to operate until shutdown by limit. REMOVE
JUMPER.
H. CHECK DAMPER OPERATION. Vent Damper must
be open when boiler is running. Le registre doit être
ouvert lorsque le brûleur principal de l’appareil
fonctionne. Start boiler, refer to instructions on damper
to determine if damper is in the full open position.
I. CHECK IGNITION SYSTEM SAFETY SHUT-OFF
DEVICE.
Remove 3-wire plug from gas valve.
If burners do not shut down determine cause of
malfunction. Replace necessary items and check
operation.
J. COMBUSTION CHAMBER BURN-OFF
1. The mineral wool combustion chamber panels may
contain a cornstarch based binder that must be
burned out at installation to prevent odors during
subsequent boiler operation.
2. Ventilate the boiler room, set the high limit to its
maximum setting, set the thermostat to call for heat.
Allow the boiler to re for at least an hour or until
the odor from the cornstarch has dissipated.
3. Return the high limit and thermostat to their desired
settings.
Figure 22: Typical Pilot Flame, Honeywell Q3481B