Install Instructions

Part Number 550-142-902/1016
CGi
GAS-FIRED WATER BOILER — SERIES 3 — Boiler Manual
5
Please read before proceeding
Installer
Read all instructions before installing. Fol-
low all instructions in proper order to prevent
personal injury or death.
• 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.
User
• This manual is for use only by your qualied heating
installer/service technician.
• PleaserefertotheUser’s Information Manual for your refer-
ence.
We recommend regular
service by a qualied service
technician, at least annually
.
The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on
of this manual. Failure to comply could result in severe personal injury.
When calling or writing about the boiler— Please have the boiler model number from the boiler rating label and the
CPnumberfromtheboilerjacket.Yo u maylisttheCPnumberinthespaceprovidedontheInstallation and service
certicate
found on page 36.
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:
• Neverstoreglycolofanykindneartheboileroranypo-
tential ignition source.
• Monitorandinspectthesystemandboilerregularlyfor
leakage. Repair any leaks immediately to prevent possible
accumulation of glycol.
• Neveruseautomotiveantifreezeorethyleneglycolinthe
system. Using these glycols can lead to hazardous leakage
of glycol in the boiler system.
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
saltresidue.Therefore,Weil‑McLainequipmentcontaminated
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
Weil ‑McLain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 tem-
perature,andinitiatesaneffectiveaction.Consultwithyour
boiler contractor or a home security agency.
When servicing boiler —
Toavoidelectricshock,disconnectelectricalsupplybefore
performing maintenance.
Toavoidsevereburns,allowboilertocoolbeforeperform-
ing maintenance.
Boiler operation —
• Donotblockowofcombustionorventilationairtoboiler.
• Shouldoverheatingoccurorgassupplyfailtoshut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boilerifanyparthasbeenunderwater.
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.
Boiler water —
• Do not use petroleumbased cleaning or sealing com-
pounds in boiler system. Water seal deterioration will
occur, causing leakage between sections. This can result
in substantial property damage.
• Donotuse“homemadecures”or“boilerpatentmedicines”.
Seriousdamagetoboiler,personneland/orpropertymay
result.
• Continualfreshmakeupwaterwillreduceboilerlife.Min-
eral buildup in sections reduces heat transfer, overheats cast
iron,andcausessectionfailure.Additionofoxygenand
othergasescancauseinternalcorrosion.Leaksinboileror
piping must be repaired at once to prevent makeup water.
• Donotaddcoldwatertohotboiler.Thermalshockcan
cause sections to crack.
Glycol — potential fire hazard —
Allglycolisammablewhenexposedtohightemperatures.If
glycol is allowed to accumulate in or around the boiler or any
Failure to adhere to the guidelines on this page can result in severe personal injury, death or substantial
property damage.