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GWA & GWI Series 3 Gas-Fired Water Boilers – User's Information Manual
Please read this page first
Failure to adhere to the guidelines on this page can result in severe
personal injury, death or substantial property damage.
Service and maintenance
•
To avoid electric shock, disconnect electrical supply before
performing maintenance.
•
To avoid severe burns, allow boiler to cool before perform-
ing maintenance.
•
You must maintain the boiler as outlined in the manual and
have the boiler started up and serviced at least annually by a
qualified service technician to ensure boiler/system reliability.
Boiler operation
•
DO NOT block flow of combustion or ventilation air to boiler.
•
GWA and GWI boilers are equipped with controls which
will automatically shut down the boiler should the vent be
blocked. Should the boiler shut down due to blockage, the
GWI device will automatically reset, but the GWA device
must be reset or replaced only by a qualified installer/
service technician.
•
Should overheating occur or gas supply fail to shut off,
do not turn off or disconnect electrical supply to pump.
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.
•
Have the building monitored when it is vacant for an
extended period. Safety controls can shut down the boiler
at any time. The loss of heat can result in significant
damage due to freezing.
Boiler water
•
DO NOT use petroleum-based cleaning or sealing
compounds in boiler system. Water seal deterioration will
occur, causing leakage between sections and damage to
heating system components. This can result in substantial
property damage.
•
DO NOT use "homemade cures" or "boiler patent medi-
cines". Serious damage to boiler, personnel and/or prop-
erty may result.
•
Continual fresh makeup water will reduce boiler life. Mineral
buildup in sections reduces heat transfer, overheats cast
iron, and causes section failure. Addition of oxygen and
other gases can cause internal corrosion. Leaks in boiler or
piping must be repaired at once to prevent makeup water.
•
DO NOT add cold water to hot boiler. Thermal shock can
cause sections to crack.
Glycol — potential fire hazard —
•
All glycol is flammable when exposed to high temperatures.
If glycol is allowed to accumulate in or around the boiler
or any other potential ignition source, a fire can develop.
In order to prevent potential severe personal injury, death
or substantial property damage from fire and/or structural
damage:
•
Never store glycol of any kind near the boiler or any po-
tential ignition source.
2
Inspect the boiler and system regularly for leaks. Have any
•
leaks repaired immediately to prevent possible accumula-
tion of glycol.
•
Never use automotive antifreeze or ethylene glycol in the
system. Using these glycols can lead to hazardous leakage
of glycol in the boiler system.
If any part of a boiler, burner or its con-
trols 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 com-
pletely 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 fire or explosion hazard, and an
electrical shock hazard, leading to serious
injury, death, or substantial property damage.
Saltwater Damage —
The exposure of boiler components
to saltwater can have both immediate and long-term effects.
While the immediate effects of saltwater damage are similar
to those of freshwater (shorting out of electrical components,
washing out of critical lubricants, etc.), the salt and other con-
taminants left behind can lead to longer term issues after the
water is gone due to the conductive and corrosive nature of
the salt residue. Therefore, Williamson-Thermoflo 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 wir-
—
ing came into contact with water, or was suspected to have
come into contact with water, replace the boiler with a new
Williamson-Thermoflo boiler.
Freeze protection fluids —
•
NEVER use automotive or standard glycol antifreeze. Use only
freeze-protection fluids made for hydronic systems. Follow all
guidelines given by the antifreeze manufacturer. Thoroughly
clean and flush any replacement boiler system that has used
glycol before installing the new boiler.
Frozen Water Damage Hazard
Residences or buildings that are unattended 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 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 effective action. Consult with your
boiler contractor or a home security agency.
Part Number 550-142-323/0720
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