In the event of a shut-down caused by a pilot outage,
action of the pressure switch or flame roll-out safely
shut-off switch effecting a shut-down of the main
burners:
a. Refer to the Operating Instructions in Figure 24 to
properly turn off the gas to the boiler
b. Turn off all electric power to the boiler.
c. Call a qualified heating service organization or local
gas company and have the cause of the shut-down
investigated and corrected.
d. Refer to Operating Instructions to
re-start boiler.
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Use Table 8 to assist in determining causes and
providing corrective actions to boiler problems. Refer
also to Figure 26 to troubleshoot the Intermittent Ignition
System Control. These guides must be used only by
qualified service technicians. These individuals must
follow al! applicable codes and regulations in repair of
any boiler problems.
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Refer to Table 7 for fan suction pressure required to
energize control circuit. Measure fan suction pressure as
shown in Figure 25. Note that as boiler operates, suction
pressure will decrease. Measure after 15 minutes of
boiler operation.
When servicing or replacing items that communicate
with the boiler water, be certain that:
• There is no pressure on the boiler.
• The boiler is not hot.
• The power is off.
When servicing the gas valve or pilot, be certain that:
• The gas is off.
• The electricity is off.
Do not use this appliance if any part has been under
water. Improper or dangerous operation may result.
Immediately call a qualified service technician to
inspect the boiler and to replace any part of the
control system and any gas control which has been
under water.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
Should overheating occur or the gas supply fail to
shut off, do not turn off or disconnect the electrical
supply to the pump.This may aggravate the problem
and increase the likelihood of boiler damage. Instead,
shut off the gas supply at a location external to the
appliance.
Table 7: Fan Suction Pressure
Boiler Model Suction Pressure
I (In. w.c)
DE-03 1.78
DE 04 1.56
DE-05 1.56
DE-06 1.35
26
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