G W I
Boiler Manual
Series 2
Gas-Fired Water Boilers
Part Number 550-142-785/0812
This manual must only be used by a qualified heating installer/service technician. Failure to comply could result in
severe personal injury, death or substantial property damage.
When calling or writing about the boiler—Please have: • boiler model number from the boiler rating label and
•CPnumberfromtheboilerjacket.YoumaylisttheCPnumberinthespaceprovidedonthe“Installationandservice
certicate”foundonpage 21.
Hazards that will or can cause minor personal
injury or property damage.
Special instructions on installation, operation or
maintenance that are important but not related to
personal injury or property damage.
INSTALLER —Readallinstructionsbeforein-
stalling. Read page 2 first. Follow all instructions
in proper order to prevent personal injury or death.
• Considerpipingandinstallationwhendetermining
boiler location.
• Anyclaimsfordamageorshortageinshipment
must be filed immediately against the transporta-
tion company by the consignee.
USER — Please read the following. Failure to
comply could result in severe personal injury,
death or substantial property damage.
• This manual is for use only by your qualified
heating installer/service technician.
• PleaseseetheUser’sInformationManualforyour
reference.
• Have the boiler serviced bya qualiedservice
technician, at least annually.
Hazards that will cause severe personal injury,
death or substantial property damage.
Hazards that can cause severe personal injury,
death or substantial property damage.
Hazard definitions
Contents
Page
1 Prepare boiler location .......................................................2
2 Prepare boiler .....................................................................6
3 Vent installation ..................................................................7
4 Installwaterpiping ............................................................13
5 Installgaspiping ...............................................................16
6 Field wiring .......................................................................17
7 Start-up ............................................................................18
8 Checkoutprocedure .........................................................20
9 DepartmentofEnergyCompliance .................................. 21
9a Sequenceofoperation .....................................................22
10 Operating instructions ......................................................26
11 Service and maintenance .................................................27
12 Troubleshooting ................................................................31
13 Replacement parts ........................................................... 41
14 Dimensions .......................................................................46
15 Ratings .............................................................................47
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