Dunkirk Q95M-200 Installation, Operation & Maintanance Manual page 24

and Freeze Protection section of manual 240006104.
2. Check that boiler area is free from combustible materials, gaso-
line, and other flammable vapors and liquids.
3. Circulator pump and blower fan motor furnished with boiler
are permanently lubricated from the factory and require no
further lubrication. Additional or non-factory supplied pumps
and/or motors should be lubricated according to the pump and/
or motor manufacturer's instruction.
daily during heating season
4. Check for and remove any obstruction to the flow of combus-
tion air or venting of flue gases.
5. Check that boiler area is free from combustible materials, gaso-
line, and other flammable vapors and liquids.
monthly during heating season
1. Remove jacket front and top panels and check for piping leaks
around relief valve and other fittings. If found, contact a quali-
fied service agency. DO NOT use stop leak compounds.
2. Test relief valve. Refer to valve manufacturers instructions
packaged with relief valve.
3. Visually inspect the venting and air intake system for proper
operation. If the vent or air intake show any signs of deteriora-
tion or leakage, contact a qualified service agency to repair or
replace them immediately and to insure proper reassembly and
resealing of the system.
4. Visually inspect the PVC condensate drain pipe for proper
operation. If the drain pipe shows any signs of blockage, leak-
age, or deterioration contact a qualified service agency to clean,
repair, or replace it immediately.
5. Check air vent(s) for leakage.
6. A periodic inspection of the low water cut off is necessary, in-
cluding flushing of float type devices. Refer to low water cut off
manufacturer's specific instructions.
annual shut down procedure
1. Turn off gas to boiler as described "To Turn Off Gas To Ap-
pliance" in Section V of the Control Manual and Operating
Instructions (P/N# 240006104).
2. If heating system is to remain out of service during freezing
weather and does not contain antifreeze, drain system com-
pletely. If boiler will be exposed to freezing temperatures, drain
condensate lines.
Xiv - maintenance and cleaninG
annual examination and cleaning of boiler components
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1.
2.
3.
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24
WARNING
The following service procedures must be performed by
a qualified service agency using the Repair Parts Manual
(P/N# 240006107) for reference. The boiler owner should
not attempt these steps.
Before servicing, turn off electrical power to boiler at service
switch. Close manual gas valve to turn off gas supply to boiler.
Examine flue passages by removing blower/burner assembly
from casting. The procedure for examining and cleaning the
burner is described below.
Any buildup of sediment or aluminum oxide (white pow-
dery or flaky substance) in the flue passages must be cleaned
as follows:
• Remove jacket front and top panels.
• Confirm that manual gas valve is closed and disconnect gas
line to gas valve at union. Then disconnect pressure switch
hoses to gas valve and air inlet.
• Disconnect wires to gas valve and igniter.
• Loosen but do not remove five nuts attaching blower adapt-
er assembly to boiler.
• Remove two igniter screws and very carefully remove the
igniter.
• Remove five nuts and remove blower adapter assembly,
burner, and gaskets.
• Aluminum oxide deposits are water soluble and may be
rinsed away by inserting a hose into the burner opening of
the casting and slowly running water through the flue side
of the boiler and out the condensate drain.
CAUTION
Debris rinsed away by this method will exit through the
condensate drain. Be wary of drain lines getting clogged
and causing water to back up in the bottom of the casting.
• Use a flexible handle nylon brush to loosen sediment and
aluminum oxide on all accessible heating surfaces of the
boiler. Be sure not to get brush stuck in heat exchanger!
• After brushing and rinsing, remove any remaining loos-