Service Hints - Dunkirk XEB-2 Installation Manual

You may avoid inconvenience and service calls by checking these points before you call
for service:
1. Do Not try to light any appliance.
2. Do not touch any electric switch, do not use the phone.
3. Leave the building immediately, then call your gas supplier.
4. 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
HAVE YOUR SERVICE TECHNICIAN CHECK ANY PROBLEM YOU

SeRVICe hINtS

FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
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 ser-
vice technician.
Check overcurrent 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 block-
age. 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.
ARE UNABLE TO CORRECT.
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