Maintenance And Cleaning - Dunkirk Q90-200 Installation, Operation & Maintenance Manual

Maintenance as outlined below can be
performed by the owner unless otherwise
noted.
The acidic nature of fl ue gasses condensing on the
aluminum boiler sections will cause the formation of
aluminum oxide. This oxide formation is normal, is
generally uniform throughout the boiler sections, and
represents a negligible mass of aluminum that is consumed
by oxidation during the life of the boiler. If left unchecked,
this buildup may eventually cause blockage of the fl ue
gas passages in the boiler sections, reducing effi ciency,
and ultimately shutting down the boiler due to lack of
combustion air fl ow. Regular service and maintenance
by a qualifi ed service agency must be performed to
assure safe trouble free operation and maximum
effi ciency. It is recommended to service the
appliance at least once every 12 months.
Beginning Of Each Heating Season
Schedule an annual service call by a qualifi ed service
1.
agency, which includes:
A. Examine fl ue passages between boiler sections,
burner, and condensate lines, and clean if
necessary following the annual examination and
cleaning instructions in paragraph F (below).
B. Visually inspect venting and air intake system for
proper operation. If the vent or air intake show any
signs of deterioration or leakage, repair or replace
them immediately. Insure proper reassembly and
resealing of the vent and air intake system.
C. Check for and remove any obstruction to the fl ow
of combustion air or venting of fl ue gases.
D. Follow instructions for "Placing Boiler In Operation"
(page 23).
E. Follow "Checkout Procedures and Adjustments" on
previous page.
F. Visually inspect condensate drain line for proper
operation. Check for deteriorated or plugged
condensate drain line.
G. Check all gasketed joints for leakage, and tighten
bolts or replace gaskets if necessary.
H. Remove jacket front and top panels and check for
piping leaks around relief valve and other fi ttings.
Repair, if found. DO NOT use stop leak compounds.

MAINTENANCE AND CLEANING

NOTICE
Check that boiler area is free from combustible
2.
materials, gasoline, and other fl ammable vapors and
liquids.
Circulator pump and blower motor furnished with
3.
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
Check for and remove any obstruction to the fl ow of
1.
combustion air or venting of fl ue gases.
Check that boiler area is free from combustible
2.
materials, gasoline, and other fl ammable vapors and
liquids.
Monthly During Heating Season
Remove jacket front and top panels and check for
1.
piping leaks around relief valve and other fi ttings. If
found, contact a qualifi ed service agency to repair. DO
NOT use stop leak compounds.
Test relief valve. Refer to valve manufacturer's
2.
instructions packaged with relief valve.
Visually inspect venting and air intake system for
3.
proper function. If the vent or air intake show any signs
of deterioration or leakage, contact a qualifi ed service
agency to repair or replace them immediately and to
insure proper reassembly and resealing of the vent and
air intake system.
Visually inspect the PVC condensate drain pipe for
4.
proper operation. If the drain pipe shows any signs
of blockage, leakage, or deterioration contact a
qualifi ed service agency to clean, repair, or replace it
immediately.
Check air vent(s) for leakage.
5.
Periodically During Heating Season
Where low water cutoffs are used, a periodic inspection of
the low water cutoff is necessary, including fl ushing of fl oat
type devices. Refer to low water cut off manufacturer's
specifi c instructions.
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