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WM97+
-
gas
fired water boiler
Please read before proceeding
Hazard definitions
The following defined terms are used throughout this manual to
bring attention to the presence of hazards of various risk levels
or to important information concerning the life of the product.
Indicates presence of hazards that will cause severe
personal injury, death or substantial property dam-
age.
Indicates presence of hazards that can cause severe
personal injury, death or substantial property dam-
age.
Indicates presence of hazards that will or can cause
minor personal injury or property damage.
Indicates special instructions on installation, opera-
tion or maintenance that are important but not
related to personal injury or property damage.
Installer— Read all instructions, including this
manual and all other information shipped with
the boiler, before installing. Perform steps in the
order given.
User — This manual is for use only by a quali-
fied heating installer/service technician. Refer to
User's Information Manual for your reference.
User — Have this boiler serviced/inspected by
a qualified service technician, at least annually.
Failure to comply with the above could result
in severe personal injury, death or substantial
property damage.
Write in the CP number in the space provided
on the Installation certificate on page 135 if not
already shown. The CP number label is located
on the jacket inside upper left side, above the heat
exchanger.
When calling or writing about the boiler— Please
have the boiler model number from the boiler
rating label and the CP number from the boiler
jacket.
Consider piping and installation when determin-
ing boiler location.
Any claims for damage or shortage in shipment
must be filed immediately against the transporta-
tion company by the consignee.
Commonwealth of Massachusetts
If the boiler is installed within the Commonwealth of Mas-
sachusetts:
•
This product must be installed by a licensed plumber or
gas fitter.
•
If antifreeze is used, a reduced pressure back-flow preventer
device shall be used.
•
Sidewall vent air installations — see instruction on page 22.
Part number 550-142-120/0113
— Boiler Manual
• Should overheating occur or gas supply
fail to shut off, DO NOT turn off or disconnect
electrical supply to circulator. Instead, shut off the
gas supply at a location external to the appliance.
• Do not use this boiler if any part has been
under water. Immediately call a qualified service
technician to inspect the boiler and to replace any
part of the control system and any gas control that
has been under water.
Failure to adhere to the guidelines on this page
can result in severe personal injury, death or sub-
stantial property damage.
EXPANSION TANK
•
Relieve pressure from the system before isolating the internal
expansion tank on WM97+70 or 110 boilers.
WHEN SERVICING BOILER —
•
To avoid electric shock, disconnect electrical supply before
performing maintenance.
•
To avoid severe burns, allow boiler to cool before perform-
ing maintenance.
•
This boiler contains ceramic fiber and fiberglass materials.
Refer to the WARNING and instructions on page 96.
BOILER OPERATION —
•
Do not block flow of combustion or ventilation air to boiler.
CARBON MONOXIDE DETECTOR —
•
A carbon monoxide detector that is wired on the same elec-
trical circuit as the boiler is strongly recommended.
SURGE PROTECTOR —
•
Provide surge protection in the boiler power supply. This
will reduce the possibility of damage to the boiler control.
BOILER WATER —
•
The WM97+ heat exchanger is made of stainless steel, and
requires that system water chemistry be within the limits in
this manual. Use the inhibitor supplied with the boiler.
DITIONAL CHEMICAL TREATMENT MAY BE NECESSARY
See page 87 for details.
•
Thoroughly flush the system (
to remove sediment. The high-efficiency heat exchanger
can be damaged by build-up or corrosion due to sediment.
FREEZE PROTECTION FLUIDS —
•
Thoroughly clean and flush any replacement boiler system
that has used glycol before installing the new boiler. Use only
the products listed by Weil-McLain for use with this boiler.
See page 88 for details.
AD-
.
BEFORE
connecting boiler)
– 7 –
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