5
19
21
11
18
23
17
16
15
14
25
13
12
20
10
9
8
7
6
5
4
1
2
22
3
24
iTem
DescriPTion
ParT #
1a
Burner Assy (45,000 Btu)
90263
1b
Burner Assy (50,000 Btu)
90264
2
Burner Mounting Bracket
90265
3
Igniter
90266
4
Pressure Relief Valve (PRV)
90267
5
Modulating Valve Assembly
90268
6
Gas Valve
90269
7
Gas Line – Burner
90270
8
Relay
90271
9
Water Inlet Tube
90272
10
Gas Inlet Tube
90273
11
Ignition Control
90274
12
Flue Outlet Screen
90275
13
Flue Tube
90276
14
Pressure Switch
90277
15
Blower Assembly
90278
16
Fan Base
90279
17
Flue Hood Assembly
90280
18
Case Assembly
90281
19
Heat Exchanger
90282
20
ECO
90283
21
Plug
90284
iTem
DescriPTion
ParT #
22
Orifice #72 (45,000 Btu)
90285
23
Orifice #71 (50,000 Btu)
90286
24
Orifice 0.27 (55K for PT#3392)
Inquire
25
Pressure Elbow Assy
90287
nS
Standard Door Kit (specify color)
Inquire
nS
Large Door Kit (specify color)
Inquire
nS
Optional Winter Kit
90290
WATer HeATer PArTs lIsT