Service Hints - Dunkirk PWXL Installation, Operation & Maintenance Manual

You may avoid inconvenience and service calls by checking these points before you call for service.
IF YOUR SYSTEM IS NOT HEATING OR NOT GIVING ENOUGH HEAT . . .
Possible Cause
Thermostat is not set cor-
rectly
Burner is not operating
properly
No electric power to boiler
Controls out of adjustment
Radiators not heating
Circulating pump not run-
ning
Poor electrical contact
Rollout switch blown
Spill switch blown
Vent damper not operating
Gas input amount is incor-
rect
Dirt on valve Seat
Water-logged expansion
tank
• Do not try to light any appliance.
!
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instruc-
tions.
• If you cannot reach your gas supplier, call the fi re department.

SERVICE HINTS

What to do
Reset thermostat above room temperature
Check fl ame. If it is yellow, the burner is not getting enough air. Or, if fl ame 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 fl ow control valve (if used). It may be in closed
position.
Check over current protection. Check relay operation
Check all control terminals and wire joints.
Have your service technician check heat exchanged for blockage. Replace rollout switch
with exact replacement.
Have your service technician check venting system and chimney for blockage, or down
draft condition. Reset spill switch.
Consult troubleshooting guide in Effi kal manual, packaged with vent damper.
If Burner is Noisy...
Contact your service Technician.
Relief Valve is Leaking...
Open valve manually. Allow water to run and clear valve seat.
Drain tank, see instructions.
WHAT TO DO IF YOU SMELL GAS
WARNING
29