37
Part Number 550-110-737/1108
GWS-090E
Gas-Fired Water Boiler –
Boiler Manual
Figure 19
Gas control assembly
13 Replacement parts
continued
Item
number Description
Manufacturer
Manufacturer’s
part number
Part number
Natural gas components
1
Gas valve, ½” x ½”, two-stage
Natural gas
Honeywell
VR8204Q2426
511-044-507WT
2
Pilot assembly kit with orifice and aluminum pilot gas
tubing
Weil-McLain
511-330-080WT
Propane gas components
1
Gas valve, ½” x ½”, two-stage
Propane
Honeywell
VR8204Q2442
511-044-509WT
2
Pilot assembly kit with orifice and aluminum pilot gas
tubing
Weil-McLain
511-330-081WT
Natural gas and propane gas components
3
Control module
United Technologies
1107-1
511-330-090WT
not shown
Wiring harness — control
Weil-McLain
591-391-952WT
not shown
Wiring harness — 120V
Weil-McLain
591-391-900WT
not shown
Timer harness #1
Weil-McLain
591-391-954WT
4
Air pressure switch
1.71 I.W.C. — GWS-090E
Cleveland
NS2-1047-08
511-624-656WT
5
Control transformer
511-842-370WT
6
Timer relay *
ABB
TS12190
510-350-468WT
not shown
Tubing, air pressure switch, 0.12 I.D. silicone
red, to collector hood
white, to transition
Lydall
590-317-650WT
590-317-651WT
* The ABB timer relay TS12190 is designed for 90-second delay, but operates for 60 seconds in the GWS-090E boiler.