series
GV90+
Dimensions and ratings
Dimension drawing (see
Figure 107
Item
Description
number
1
1" NPT Supply
2
1" NPT Return
3
Combination pressure-temperature gauge, 2 ½" short shank
4
¾" NPT Relief valve outlet
5
Plug dome, 2" black
6
Junction box
7
Inlet air fitting, 3" PVC
8
Flue outlet, 3" PVC
9
½" Condensate trap
10
½" NPT Gas supply connection (provided by others)
11
Drip leg (provided by others)
12
Union (provided by others)
13
Manual main shutoff gas valve (provided by others)
14
ON/OFF switch
102
gas-fired water boiler – boiler manual
2
Figure 108, page 103
for dimensional table)
Part number 550-143-010/1021