Table Of Contents; Contents; Hazard Definitions - Weil-McLain 2 Series Manual

series
GV90+

Contents

How it works . . . . . . . . . . . . . . . . . . . . . . .2
GV90+ Series 2 Water Boiler . . . . . . . . . . . . .3
Contents . . . . . . . . . . . . . . . . . . . . . . . .4
Hazard definitions . . . . . . . . . . . . . . . . . . .4
Please read before proceeding . . . . . . . . . . . .5
Prepare boiler location . . . . . . . . . . . . . . . .6
Install water piping . . . . . . . . . . . . . . . . . 12
Multiple boiler installations . . . . . . . . . . . . . 23
Multiple boiler water piping . . . . . . . . . . . . . 24
Venting & air - general . . . . . . . . . . . . . . . 29
Commonwealth of Massachusetts installations. . 34
Vent termination requirements . . . . . . . . . . . 35
DIRECT VENT - Boiler room air openings . . . . 36
DIRECT VENT - Sidewall with W-M (optional) vent/
air plate. . . . . . . . . . . . . . . . . . . . . . . . 37
DIRECT VENT - Sidewall with separate pipes . . 39
DIRECT VENT - Sidewall with 3" concentric . . . 41
DIRECT VENT - Vertical with separate pipes. . . 43
DIRECT VENT - Vertical with 3" concentric . . . 45
DIRECT EXHAUST - Boiler room air openings. . 49
DIRECT EXHAUST - Sidewall . . . . . . . . . . . 51

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 damage.
Indicates presence of hazards that can cause
severe personal injury, death or substantial
property damage.
4
gas-fired water boiler - boiler manual
2
DO NOT START THIS BOILER without
following all instructions and procedures
specified in the following sections:
"Startup - fill the system" on
"Startup - final checks" on
"Startup procedure" on
Failure to follow the instructions in
this manual could result in severe
personal injury, death or substantial
property damage.
DIRECT EXHAUST - Vertical. . . . . . . . . . . . 53
Gas piping . . . . . . . . . . . . . . . . . . . . . . 54
Wiring . . . . . . . . . . . . . . . . . . . . . . . . 55
Start-up. . . . . . . . . . . . . . . . . . . . . . . . 59
Department of Energy - Compliance. . . . . . . . 65
Annual start-up and general maintenance schedule 68
Annual start-up . . . . . . . . . . . . . . . . . . . 69
Service & maintenance . . . . . . . . . . . . . . . 73
Troubleshooting . . . . . . . . . . . . . . . . . . . 76
Installation and service certificate . . . . . . . . . 90
Replacement parts . . . . . . . . . . . . . . . . . 91
Dimensions and ratings. . . . . . . . . . . . . . 102
Handling ceramic fiber and fiberglass materials . 106
Indicates presence of hazards that will or can
cause minor personal injury or property damage.
Indicates special instructions on installation,
operation or maintenance that are important
but not related to personal injury or property
damage.
page 60
page 62
page 62.
Part number 550-143-010/1021