Part Number 550-110-737/1108
Contents
Page
1 Prepare boiler location ....................................................... 2
2 Prepare boiler ..................................................................... 8
3 Install water piping .............................................................. 9
4 Venting and combustion air .............................................. 12
5 Gas piping ........................................................................ 12
6 Field wiring ....................................................................... 13
7 Start-up ............................................................................ 14
8 Checkout procedure ......................................................... 16
9 Sequence of operation ..................................................... 17
10 Operating instructions ...................................................... 19
11 Service and maintenance ................................................. 20
12 Troubleshooting ................................................................ 25
13 Replacement parts ........................................................... 33
14 Dimensions ....................................................................... 38
15 Ratings ............................................................................. 39
Boiler Manual
GWS-
090
E
Gas-Fired Water Boiler
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
• CP number from the boiler jacket. You may list the CP number in the space provided on the “Installation and service
certificate” found on page 16.
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
— Read all instructions before
installing. Read page 2 first. Follow all instruc-
tions 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 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.
• Please see the User’s Information Manual for your
reference.
• Have the boiler serviced by a qualified service
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
