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MANTEL
SHARPINNERCONES
ADJUST
PILOT BURNER
Pilot flame should surround 3/8" to 1/2" of the pilot sensor.
Refer to Fig. 18. If flame needs adjusting, do it as follows:
1. Remove screw cover over pilot adjusting screw.
2. Insert small screwdriver
and adjust flame as needed.
Turn screw counterclockwise
to increase flame, clock-
wise to decrease.
3. Replace screw cover over pilot adjusting screw.
MAIN BURNER(S)
The main burners do not require primary air adjustment and
are not equipped
with primary air shutters. Main burner
flames should form sharp blue inner cones in a softer blue
outer mantel, with no yellow. Puffs of air from blowing on the
flame or stamping on the floor will cause the flames to turn
orange momentarily. This is not unusual. Remain still when
observing the main burner flames. If the flame appearance is
not correct, check main burner orifices and the burner throat
and flame ports for dust and lint obstruction. It may be nec-
essary to remove the rollout shield to observe the main burn-
er flames. Replace rollout shield after observation. Refer to
Figure 17.
ADJUST
LIMIT CONTROLS
Instructions for each control are included with the controls.
These settings can be changed after you have had some
J RECOMMENDED BOILER WATER TEMPERATURES
Type of Heating Unit
Limit Control Setting
Standing Radiators
....................
180 ° F.
Baseboard and Convector Radiators
......
200 ° F.
idea how the system works. Example: If your system does not
give quite enough heat in very cold weather, you can raise
the limit setting to 220 ° R Use the boiler gauge to check your
settings. Make the adjustments according
to its readings.
Check thermostat operation. When set above temperature
indicated on the thermometer, boiler should ignite. Make cer-
tain the thermostat turns off the boiler when room tempera-
ture reaches the selected setting and starts the boiler oper-
ating when room temperature falls a few degi-ees.
After setting limit control to limit setting, check to see if it shuts
off the gas supply to the burners. Turn your thermostat up to
call for heat and let your boiler run until the temperature of the
water reaches the limit setting. The gas valve should shut off
and the circulator keep running until the thermostat is satis-
fied, or the water cools enough to restart the burners through
the limit control.
Finally, set the thermostat
for the desired
temperature.
Special conditions in your home and the location of the ther-
mostat will govern this setting.
3/8" to 1/2"
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