Weil-McLain GV90+ User Manual download pdf (Page 3)

Part number 550-142-055/0411

GV90+ gas-fired water boiler — User’s Information Manual

STOP!! — Read before proceeding

Failure to adhere to the guidelines on this page can result

in severe personal injury, death or substantial property

damage.

Boiler service and maintenance —

• To avoid electric shock, disconnect electrical supply before

performing maintenance.

• To avoid severe burns,

allow boiler to cool before performing

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. This

boiler is equipped with a control which will automatically shut down

the boiler should air or vent be blocked. If vent or air blockage is

easily accessible and removable, remove it. The boiler should attempt

to restart within an hour. If blockage is not obvious or cannot be

removed, have the boiler and system checked by a qualiﬁed service

technician.

•

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. Imme-

diately 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.

Combustion air —

• DO NOT install combustion air intake where there is a risk of

combustion air contamination.

Carbon monoxide detector —

• For Direct Exhaust units, a carbon monoxide detector is required

in the boiler room. The carbon monoxide detector must be wired

on the same electrical circuit as the boiler.

• For

Direct Vent units, a carbon monoxide detector that is wired on

the same electrical circuit as the boiler is strongly recommended.

Boiler water —

• 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.

•

Leaks in boiler or piping must be repaired at once to prevent

make-up water. Use this boiler ONLY in a closed-loop system.

Continual fresh make-up water will reduce boiler life. Mineral build-

up in heat exchangers reduces heat transfer, overheats the materials,

and causes failure. Addition of oxygen carried in by make-up water

can cause internal corrosion.

•

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. 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.

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 rat-

ing label and the CP number from

the boiler jacket.

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 in-

stallation, operation or maintenance

that are important but not related to

personal injury or property damage.

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Weil-McLain GV90+ User Manual Page 3

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