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Failure to adhere to the guidelines on this page
can result in severe personal injury, death or sub-
stantial property damage.
Boiler service and maintenance —
❏ To avoid electric shock, disconnect all electrical supplies to
the boiler before performing maintenance if wiring will be
exposed.
❏ To avoid severe burns, allow boiler to cool before perform-
ing maintenance.
❏ You must maintain the boiler as outlined in this manual
and
have the boiler started up and serviced at least
annually
by a qualied service technician to ensure boiler/
system reliability.
Boiler operation —
❏ Do not block ow of combustion or ventilation air to boiler.
is boiler is equipped with a control which will automati-
cally shut down the boiler should air or vent be blocked. If
vent or air blockage is easily accessible and removable, re-
move it. If the boiler display indicates a manual reset lockout,
follow the procedure on Figure9,page8 to reset the boiler.
(If blockage is not obvious or cannot be removed, have the
boiler and system checked by a qualied service technician.)
❏ Do not allow contaminated air to enter the boiler room (or
air inlet pipe if direct vented). See page9 for details. Should
overheating occur or gas supply fail to shut o, do not turn
o or disconnect electrical supply to boiler. Instead, shut o
the gas supply at a location external to the appliance.
❏ Do not use this boiler if any part has been under water. Im-
mediately call a qualied service technician to inspect the
boiler and to replace any part of the control system and any
gas control, which has been under water.
Boiler water —
❏ Have boiler water chemistry checked at least annually by a
qualied service technician.
❏ DO NOT use petroleum-based cleaning or sealing com-
pounds in boiler system. Gaskets and seals in the system may
be damaged. is can result in substantial property damage.
❏ DO NOT use “homemade cures” or “boiler patent medi-
cines”. Serious damage to boiler, personnel and/or property
may result.
❏ Continual fresh makeup water will reduce boiler life. Mineral
build-up in boiler heat exchanger reduces heat transfer, over-
heats the metal, and causes heat exchanger failure. Addition of
oxygen can cause internal corrosion in system components.
Leaks in boiler or piping must be repaired at once to prevent
makeup water.
❏ Do not add cold water to hot boiler. ermal shock can cause
boiler heat exchanger to crack.
Frozen Water Damage Hazard
Residences or buildings that are unaended in severely cold
weather, boiler system components failures, power outages, or
other electrical system failures could result in frozen plumbing
and water damage in a maer of hours. For your protection, take
preventative actions such as having a security system installed
that operates during power outages, senses low temperature, and
initiates an eective action. Consult with your boiler contractor
or a home security agency.
STOP! READ THIS BEFORE PROCEEDING . . .
If any part of a boiler, burner or its controls
has been sprayed with or submerged under
water, either partially or fully, DO NOT attempt
to operate the boiler until the boiler has
been either replaced or completely repaired,
inspected, and you are sure that the boiler
and all components are in good condition
and fully reliable.
Otherwise, by operating this
boiler, you will cause a re or explosion hazard,
and an electrical shock hazard, leading to serious
injury, death, or substantial property damage. See
the instructions at right.
Saltwater Damage — e exposure of boiler components to
saltwater can have both immediate and long-term eects. While the
immediate eects of saltwater damage are similar to those of fresh-
water (shorting out of electrical components, washing out of critical
lubricants, etc.), the salt and other contaminants le behind can lead
to longer term issues aer the water is gone due to the conductive
and corrosive nature of the salt residue. erefore, Weil-McLain
equipment contaminated with saltwater or polluted water will no
longer be covered under warranty and should be replaced.
Electrical Damage — If any electrical component or wiring
came into contact with water, or was suspected to have come into
contact with water, replace the boiler with a new Weil-McLain boiler.
3
SlimFit
®
Series 2
commercial condensing gas-fired water boiler
- User’s Information Manual
Part number 550-100-562/0321
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