Dunkirk WPSB Series II - Manual (Page 19)

19
OPERATING YOUR BOILER
AUTOMATIC GAS VALVE
Automatic Gas Valve opens or closes according to
heat requirements of thermostat and temperature
limit control. It closes if pilot goes out. Each
individual control must be operating correctly before
any gas can pass to burners. Any one control can
hold gas supply from burner regardless of demand of
any other control.
SAFETY PILOT
Safety Pilot prevents fl ow of gas to burner if pilot
goes out, or will not ignite.
GAS VALVE SAFETY SHUTDOWN TEST
Ignition system safety shutoff device must be tested after
placing boiler in operation.
RELIGHT
Electric and gas shall be off for 5 minutes before
relighting.
THERMOSTAT
Keep it set at desired room temperature. If windows
are to be opened or heat is not needed, move
thermostat pointer to lower setting.
NOTICE
In event of failure of any component, system
will not operate or will go into safety lockout.
System is completely self-checking. On
every call for heat, each component must
be functioning properly to permit operation.
Safety lockout system has to be reset by
turning thermostat to lowest setting for one
minute, then back to normal setting.
ADJUST PILOT BURNER
Pilot fl ame should surround 3/8” to 1/2” of the pilot
sensor. See Figure 16. If fl ame needs adjusting, do it
as follows:
1. Remove screw cover over pilot adjusting screw.
2. Insert small screwdriver and adjust fl ame as needed.
Turn screw counterclockwise to increase fl ame, clockwise
to decrease.
3. Replace screw cover over pilot adjusting screw.
MAIN BURNER(S)
• Main burners do not require primary air adjustment and
are not equipped with primary air shutters.
• Main burner fl ames form sharp blue inner cones in softer
blue outer mantel, with no yellow.
• Puffs of air from blowing on fl ame or stamping on fl oor
will cause fl ames to turn orange momentarily. This is
not unusual. Remain still when observing main burner
fl ames.
• If fl ame appearance is not correct, check main burner
orifi ces, burner throat and fl ame ports for dust and
lint obstruction. It may be necessary to remove rollout
shield to observe main burner fl ames. Replace rollout
shield after observation. Refer to Figure 14.
Figure 14 - Burner
ADJUST LIMIT CONTROLS
Instructions for each control are included with controls.
Settings can be changed.
See Control Section page 24.
Figure 13 - Pilot Flame