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Part number 550-100-211/0122
– 5 –
220 /29 9/3 00 /39 9
Failuretoadheretotheguidelinesbelowcanresultinseverepersonalinjury,deathorsubstantialpropertydamage.
EXPANSIONTANK
Relieve pressure from the system before
isolating the expansion tank.
Whenservicingboiler—
y To avoid electric shock, disconnect all
electrical supplies to the boiler before
performing maintenance.
y To avoid severe burns, allow boiler to
cool before performing maintenance.
y is boiler contains ceramic ber and
berglass materials. Refer to the WARN-
ING and instructions on page94.
Boileroperation—
y Do not block ow of combustion or
ventilation air to boiler.
y Should overheating occur or gas supply
fail to shut o, do not turn o or discon-
nect electrical supply to pump. Instead,
shut off the gas supply at a location
external to the appliance.
Combustionair—
y DO NOT install combustion air intake
where there is a risk of combustion air
contamination.
Carbonmonoxidedetector—
y A carbon monoxide detector that is
wired on the same electrical circuit as
the boiler is strongly recommended.
SURGEPROTECTOR—
y Provide surge protection in the boiler
power supply. is will reduce the pos-
sibility of damage to the boiler control.
Boilerwater—
y e Evergreen heat exchanger is made
of stainless steel, and requires that sys-
tem water chemistry be within the limits
in this manual. ADDITIONALCHEMICAL
TREATMENTMAYBENECESSARY
. See
page86 for details.
y oroughly ush the system (BEFORE
connecting boiler) to remove sediment.
e high-eciency heat exchanger can
be damaged by build-up or corrosion
due to sediment.
y Do not use petroleum-based cleaning
or sealing compounds in boiler system.
Gaskets and seals in the system may be
damaged. is can result in substantial
property damage.
y Continual fresh make-up water will
reduce boiler life. Mineral buildup in
eat exchanger reduces heat transfer,
overheats the stainless steel heat ex-
changer, and causes failure. Addition of
oxygen carried in by make-up water can
cause internal corrosion. Leaks in boiler
or piping must be repaired at once to
prevent make-up water. Use this boiler
ONLY in a closed-loop system.
y Do not add cold water to a hot boiler.
ermal shock can cause heat exchanger
to crack.
Freezeprotectionuids—
y NEVER use automotive or standard
glycol antifreeze. Use only freeze-
protection fluids made for hydronic
systems. Follow all guidelines given
by the antifreeze manufacturer. or-
oughly clean and ush any replacement
boiler system that has used glycol before
installing the new boiler
Frozen Water Damage
Hazard
Residences or buildings that are unat-
tended in severely cold weather, boiler
system components failures, power out-
ages, or other electrical system failures
could result in frozen plumbing and water
damage in a matter 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 ac-
tion. Consult with your boiler contractor
or a home security agency.
Ifanypartofaboiler,burneroritscontrolshas
beensprayedwithorsubmergedunderwater,
eitherpartiallyorfully,DONOTattempttoop-
eratetheboileruntiltheboilerhasbeeneither
replacedorcompletelyrepaired,inspected,and
youaresurethattheboilerandallcomponents
areingoodconditionandfullyreliable.
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.
ElectricalDamage — If any electricalcomponent 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.
When the boiler is installed within the Commonwealth of Massachusetts:
y is product must be installed by a licensed plumber or gas tter.
y If antifreeze is used, a reduced pressure back-ow preventer device shall be used.
y Sidewall vent air installations — see instruction on page22.
Installer— Read all instructions, including this
manual and all other information shipped with the
boiler, before installing. Perform steps in the order
given.
User— is manual is for use only by a qualied
heating installer/service technician. Refer to User’s
Information Manual for your reference.
User — Have this boiler serviced/inspected by a
qualied 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 certicate on page131 if not already
shown.
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 determining
boiler location.
Any claims for damage or shortage in shipment
must be led immediately against the transportation
company by the consignee.
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