User Guide

Part number 550-142-055/0411
3
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ow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qualied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qualied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uidsmadeforhydronicsystems.Followallguidelines
givenbytheantifreezemanufacturer.Thoroughlycleanandush
any replacement boiler system that has used glycol before installing
thenewboiler.
User — Have this boiler serviced/
inspectedbyaqualied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dened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.