Maintenance - Dunkirk EXCELSIOR EXB4075 Installation, Operation & Maintenance Manual

!
DANGER
Before servicing, turn off electrical power to boiler
at service switch. Turn off fuel supply to burner
Failure to comply will result in death or serious
injury.
NOTICE
Perform regular service and maintenance by
qualified service agency at least once every 12
months to assure safe, trouble free operation
and maximum efficiency.
NOTICE
Verify proper operation after servicing.
18.1 Annually
Recommend qualified Service Agency check at lease once a
year:
• Flue passages,
• Combustion chamber area (target wall, fire door
insulation)
• Burner adjustment,
• Operation of the controls,
• Boiler seals (fire door gasket or silicone seal, cast iron
sectional seals, flue collector)
Before start of each heating season (or system has been
shut down for extended period of time)
• Recheck whole system for water, oil, and vent piping
leaks.
• Replace or patch any leaks or seals that are faulty
• Inspect flue ways at least once a year- Preferably at
start of heating season.
• Inside of combustion chamber.
• Clean vent system and boiler flue ways if soot or scale
has accumulated. When cleaning, take precaution
to avoid damage to burner swing door insulation. If
damaged, or if there is evidence of previous damage,
burner swing door insulation must be replaced
immediately.
• Oil Burner and controls.
18.2 Vent Pipe
Visually inspect entire venting system once a month for any
signs of leakage, deterioration, or soot build up.
If vent pipe shows any signs of leaking or deterioration,
replace it immediately.
If it shows any signs of soot build up, clean vent pipe and
have burner settings and combustion checked by qualified
service agency.

18 - MAINTENANCE

18.3 Relief Valve
• Test relief valve for proper operation. Refer to valve
manufacturer's instructions packaged with relief valve.
18.4 Conventional Expansion Tank
See "Equipment And Accessories" section.
18.5 Diaphragm Expansion Tank
See "21 - Equipment And Accessories" on page 59.
18.6 WATER SYSTEM
Drain system completely if system is to remain out of
service during freezing weather. Water left in system will
freeze and crack pipes and/or boiler.
18.7 Oil Burner Maintenance
Beckett AFG, perform following preventative maintenance
annually, preferably prior to heating season.
• Fuel Filter Replace to prevent contaminated fuel from
reaching nozzle. Partially blocked fuel filter can cause
premature failure of fuel pump.
• Fuel Pump Unit Replace pump screen and clean pump
unit to maintain fuel delivery to nozzle.
• Ignition Electrodes Clean and adjust as per
manufacturer's recommendations, so as to maintain
reliable ignition of oil.
• Nozzle Replace so as to maintain safe and reliable
combustion efficiency. Always replace with exact nozzle
as required in charts. See "17 - Oil Burner, Nozzle, &
Air Settings" on page 46.
• Fan and Blower Housing Keep clean, free of dirt, lint
and oil to maintain proper amount of air fuel requires to
burn.
• Check burner settings and adjust as needed.
NOTE: If any component parts must be replaced, always
use parts recommended by burner manufacturer.
18.8 Maintenance Of Optional Low Water Cut Off
Burn and scald hazard. Verify boiler is at zero
pressure before removing relief valve or control well.
Open safety valve to relieve all internal pressure
prior to proceeding.
Remove control well from top of rear boiler section every
five years and clean any scale or sediment deposits from all
parts exposed to boiler water.
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WARNING