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GAS-FIRED BOILER User Manual
SECTION I – COMBUSTION AIR – PREVENTION OF CONTAMINATION
AREAS LIKELY TO FIND THESE PRODUCTS
WARNING
If the Munchkin combustion air inlet is located
in any area likely to cause or contain
contamination, or if products, which would
contaminate the air cannot be removed, the
combustion air must be re-piped and
terminated to another location. Contaminated
combustion air will damage the unit and its
burner system, resulting in possible severe
personal injury, death or substantial property
damage.
WARNING
Do not operate a Munchkin unit if its
combustion air inlet or the unit is located in or
near a laundry room or pool facility. These areas
will always contain hazardous contaminates.
Pool and laundry products and common
household and hobby products often contain
fluorine or chlorine compounds. When these
chemicals pass through the burner and vent
system, they can form strong acids. These acids
can create corrosion of the heat exchanger,
burner components and vent system, causing
serious damage and presenting a possible
threat of flue gas spillage or water leakage into
the surrounding area.
Products to avoid
Spray cans containing fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning
solvents found in household laundry rooms
Adhesives used to fasten building products and
other similar products
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages and workshops
SECTION II – MAINTENANCE SCHEDULE
SERVICE TECHNICIAN
On an annual basis the following maintenance
should be performed by a qualified service tech-
nician:
General
• Attend to any reported problems.
• Inspect the interior of the boiler jacket area;
clean and vacuum if necessary.
• Clean the condensate trap and fill with fresh
water.
• Check for leaks: water, gas, flue and
condensate.
• Verify flue vent piping and air inlet piping are
in good condition and sealed tight.
• Check boiler water pressure, piping and
expansion tank.
• Check control settings.
• Check ignition electrode (use Scotch Brite Pad
and sand off any white oxide; clean and
reposition).
• Check ignition wiring and ground wiring.
• Check all control wiring and connections.
• Check burner flame pattern (stable and
uniform) and flame.
Additional items if combustion or
performance is poor:
• Clean heat exchanger and flue ways.
• Remove burner assembly and clean burner