Please Read Before Proceeding - Weil-McLain Ultra Manual

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gas fired water boiler

Please read before proceeding

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 qualified heating installer/service
technician. Refer to User's Informa-
tion Manual for your reference.
User — Have this boiler serviced/
inspected by a qualified service tech-
nician, at least annually.
Failure to comply with the above
could result in severe personal injury,
death or substantial property dam-
age.
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.
You should write in the CP number in
the space provided on the Installation
certificate on page 77 if not already
shown.
Consider piping and installation
when determining boiler location.
Any claims for damage or shortage in
shipment must be filed immediately
against the transportation company
by the consignee.
Commonwealth of Massachusetts
When the boiler is installed within the Common-
wealth of Massachusetts:
• 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.
Part number 550-100-066/0608
— Boiler Manual
Failure to adhere to the guidelines on this page can result
in severe personal injury, death or substantial property
damage.
When servicing boiler —
• To avoid electric shock, disconnect electrical supply before per-
forming maintenance.
• To avoid severe burns, allow boiler to cool before performing
maintenance.
• This boiler contains ceramic fiber and fiberglass materials. Refer
to the WARNING and instructions on page 79.
Boiler operation —
• Do not block flow of combustion or ventilation air to boiler.
• 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. Immedi-
ately 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.
Boiler water —
• The Ultra heat exchanger is made of aluminum, and requires that
system pH always be between 7.0 and 8.5 and water chemistry be
checked. Chemical treatment may be necessary. See page 71 for
details.
• Thoroughly flush the system (without boiler connected) to remove
sediment. The high-efficiency heat exchanger can be damaged by
build-up or corrosion due to sediment.
• Do not use petroleum-based cleaning or sealing compounds in
boiler system. Gaskets and seals in the system may be damaged.
This can result in substantial property damage.
• Continual fresh make-up water will reduce boiler life. Mineral
buildup in heat exchanger reduces heat transfer, overheats the
aluminum heat exchanger, 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.
• Do not add cold water to hot boiler. Thermal shock can cause heat
exchanger to crack.
Freeze protection fluids —
NEVER use automotive or standard glycol antifreeze, even glycol made
for hydronic systems. Use only freeze-protection fluids recommended
in this manual (see page 71). Follow all guidelines given. Thoroughly
clean and flush any replacement boiler system that has used glycol
before installing the new Ultra boiler.
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