Service Hints - Dunkirk XEB-2 Installation, Operation & Maintenance Manual

You may avoid inconvenience and service calls by checking these points before you call for service:
WHAT TO DO IF YOU SMELL GAS
Do Not try to light any appliance.
!
Do not touch any electric switch, do not use the phone or any mobile electronics. These actions may create a spark and cause igni-
tion.
Leave the building immediately, then call your gas supplier.
If you cannot reach the gas supplier, call the fire department.
IF YOUR SYSTEM IS NOT HEATING OR NOT GIVING ENOUGH HEAT . . .
POSSIBLE CAUSE
Thermostat is not set correctly
Burner is not operating properly
No electric power to boiler
Controls out of adjustment
Radiators not heating
Circulating pump not running
Poor electrical contact
Chimney flue is blocked
Rollout switch blown
POSSIBLE CAUSE
Gas input amount is incorrect
POSSIBLE CAUSE
Dirt on seat
Water logged expansion tank
WHAT TO DO
Reset thermostat
Check flame. If it is yellow, the burner is not getting enough air. Or, if flame is blue
and noisy and seems to lift off the burner, the burner is getting too much air. Contact
your service technician.
Check over-current protection. Check to be sure electric power supply circuit is
"ON".
Reset according to instructions.
Open radiator vents to excess air. Check flow control valve (if used). It may be in
closed position.
Check overcurrent protection. Check relay operation.
Check all control terminals and wire joints.
Pressure switch will not close and pilot spark will not operate to start pilot. Have
your service technician check and correct, if necessary.
Have your service technician check heat exchanger for blockage. Replace rollout
switch with exact replacement.
IF BURNER IS NOISY . . .
WHAT TO DO
Contact your service technician.
RELIEF VALVE LEAKING . . .
WHAT TO DO
Open valve manually. Allow water to run and clear valve seat.
Drain tank, see instructions.
HAVE YOUR SERVICE TECHNICIAN CHECK ANY PROBLEM YOU
ARE UNABLE TO CORRECT.

SErVICE HINTS

WARNING
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