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

Operating Instructions.
1.
STOP! Read Safety Information on previous page
2.
Set the thermostat to lowest setting.
3.
Turn off all electric power to the appliance.
4.
This appliance is equipped with an ignition device which
automatically lights the burner. Do not attempt to light
the burner by hand.
5.
Remove burner access panel.
6.
Depress gas control knob slightly and turn clockwise
"OFF" position.
to
Figure 14 - Gas Control Knob
INLET
GAS CONTROL KNOB
SHOWN IN "ON" POSITION
Knob cannot be turned to "OFF" unless knob
is depressed slightly. Do not force.
Gas Valve Safety Shutdown Test
Ignition system safety shutoff device must be tested after
placing boiler in operation.
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 reconnecting 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
(Figure #16. Turn screw counterclockwise
increase flame, clockwise to decrease (Figure #17).
3.
Replace screw cover over pilot adjusting screw.
STArTINg yOur BOILEr
ON
OFF
NOTICE

ChECkINg ANd AdjuSTINg

.
Wait five (5) minutes to clear out any gas. If
!
you then smell gas STOP! Follow WHAT TO
DO IF YOU SMELL GAS on previous page. If
you don't smell gas, go to next step.
7.
Turn gas control knob counterclockwise
8.
Turn on all electric power to the appliance.
9.
Set thermostat to desired setting.
10.
After visually inspecting the flame, replace 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
to "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.
Remain still when observing the main burner flames. Refer
to Figure #17.
If flame appearance is not correct, check main burner
orifices and burner throat and flame ports for dust and lint
obstruction. It may be necessary to remove rollout shield
to observe main burner flames. Replace rollout shield after
to
observation.
26
WARNING
to "ON."
WARNING