Part number 550-143-010/1021
105
GV90+
series
2
gas-fired water boiler – boiler manual
Figure 111
for additional technical information
Boiler
Model
Water flow rate per boiler
Vent/air pipe size —
Provide a separate vent
for each boiler
Note 1
GPM @ 20°F rise
GPM @ 40°F rise
GV90+3
6.5
3.3
3”
GV90+4
9.7
4.9
3”
GV90+5
13.0
6.5
3”
GV90+6
16.1
8.1
3”
Note 1
All GV90+ installations require a separate vent pipe and termination for each boiler.
Vent piping cannot be manifolded
.
Install and terminate vents as described in vent/air installation instructions in this manual.
Combustion air piping can be individually piped or manifolded. See
, for manifolded air piping.
Dimensions and ratings
(continued)