Checking And Adjusting; Operating Instructions - Dunkirk XEB-2 Installation, Operation & Maintenance Manual

Operating Instructions.

1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance.
3. This appliance is equipped with an ignition device which auto-
matically lights the burner. Do not attempt to light the burner
by hand.
4. Remove burner access panel.
5. Depress gas control knob slightly and turn clockwise
"OFF" position.
Figure 14 - gas Control Knob
INLET
GAS CONTROL KNOB
SHOWN IN "ON" POSITION
NOTE: Knob cannot be turned to "OFF" unless knob is
depressed slightly. Do not force.
gas Valve Safety Shutdown Test
With main burners firing, disconnect the ignition cable from the
intermittent pilot control box. The gas valve should shut off the main
burners. TURN OFF ELECTRIC POWER to boiler before recon-
necting ignition cable, to prevent electric shock.
Adjust pilot Burner
1. Remove screw cover over pilot adjusting screw.
2. Insert small screwdriver and adjust flame as needed (
#16. Turn screw counterclockwise
clockwise to decrease (Figure #17).
3. Replace screw cover over pilot adjusting screw.
STArTINg yOur BOILEr
ON
OFF
NOTICE

CHECKINg ANd AdjuSTINg

Figure
to increase flame,
Wait five (5) minutes to allow any gas in the combustion
chamber to vent. If you then smell gas in the appliance
area or near the floor, do not touch any electrical switch,
!
do not use the phone. Leave the building immediately
and call your gas supplier. If your gas supplier cannot be
reached, call the fire department. Failure to do so may
result in a fire or explosion. If you don't smell gas, go to
to
next step.
6. Turn gas control knob counterclockwise
7. Turn on all electric power to the appliance.
8. Set thermostat to desired setting.
9. After visually inspecting the flame, replace the lower front
panel.
If the appliance will not operate after several tries, turn the
!
gas control knob to "OFF" and call your service technician
or gas supplier.
To Turn Off Appliance:
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if servicing is to be
performed.
3. Depress gas control knob slightly and turn clockwise
"OFF" position. Do not force.
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. Re-
main still when observing the main burner flames. Refer to Figure
#17. If the flame appearance is not correct, check main burner ori-
fices and the burner throat and flame ports for dust and lint obstruc-
tion. It may be necessary to remove the rollout shield to observe the
main burner flames. Replace rollout shield after observation.
28
WARNING
to "ON."
WARNING
to