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21 By-Pass Valve Spring All R0304500
22 By-Pass Valve Rod All R0304900
23 By-Pass Valve Disk All R0011500
24 Flange & Gasket Assy, 2" (2) All R0055000
25 Flange, 2" All 10573500
26 Flange Gasket, 2" All S0078000
27 Flange Sleeve, 2" All S0078200
28 Flange Bolt All F0031700
29 Flange Gasket 1 1/2 - 2" All S0078100
30 Pressure Relief Valve, 75 PSI All R0040400
(requires fi eld supplied 3/4 NPT x 3" brass nipple)
Heat Exch. Hardware Kit (Note 1) 220 R0319103
350 R0319105
Inlet/Outlet Header Hardware Kit (Note 1)
R0319300
Return Header Hardware Kit (Note 1) R0319200
COMBUSTION SYSTEM ASSEMBLY
31 Gas Valve All R0200100
31A Step Down Regulator 350 R0337300
32 Anti-Rotation Bracket (not shown) All R0348500
33 Orifi ce Holder All R0320000
34 Gas Orifi ce, NAT 220 R0309303
350 R0309305
34 Gas Orifi ce, LPG 220 R0309403
350 R0309405
35 Combustion Air Filter Assembly All R0348200
36 Combustion Air Filter All R0308000
37 Venturi Inlet 220 R0320303
350 R0320305
38 Venturi O-Ring All R0320400
39 Venturi Plenum All R0320500
40 Venturi/Tailpipe Gasket All R0348300
41 Mixing Chamber/Tail Pipe Assy All R0320600
42 Mixing Chamber/Burner Gasket All R0348300
43 Burner Assembly 220 R0305903
350 R0305905
44 Burner/Comb. Chamber Gasket 220 R0305803
350 R0305805
45 Combustion Chamber Assembly 220 R0305103
350 R0305105
46 Refractory Tile Set 220 R0305303
350 R0305305
47 Sight Glass Assembly All R0305400
48 Combustion Chamber Strip Set 220 R0213103
(not shown) 350 R0213105
49 Combustion Chamber/Coll. Gasket 220 R0305703
350 R0305705
Venturi Hardware Kit (Note 1) All R0322200
Mixing Chamber Hardware Kit (Note 1) R0322100
Burner Hardware Kit (Note 1) 220 R0319403
350 R0319405
EXHAUST ASSEMBLY
50 Collector 220 R0303203
350 R0303205
51 Blower/Collector Gasket All R0308700
52 Combustion Blower All R0308200
53 Blower/Vent Duct Sleeve All R0308600
54 Blower/ Vent Duct Clamp All R0308800
55 Vent Duct Assembly All R0303100
56 Vent Duct/Heater Top Gasket or All R0309100
Heater Top/Indoor Vent Collar Gasket
57 Heater Top/Outdoor All R0309500
Exhaust Grille Gasket
58 Outdoor Exhaust Grille All R0348400
59 Indoor Vent Collar (not shown) All R0307900
60 Condensate Trap Assembly All R0303300
61 Limestone Gravel All R0306200
62 Condensate Trap Cover All R0213300
Venturi Hardware Kit (Note 1) All R0322200
Mixing Chamber Hardware Kit (Note 1) R0322100
ELECTRICAL COMPONENTS AND CONTROLS
63 Transformer All R0061100
64 In-Line Fuse Holder Assembly All R0325600
65 Ignition Control All R0408100
66 Wire Harness, Ignition Control All R0302700
67 Igniter Assembly All R0016400
68 Igniter Gasket All R0205300
69 Terminal Block All R0301900
70 High-Limit Switch Set All R0322700
71 High-Limit Switch, 135°F All R0302400
72 High-Limit Switch, 150°F All R0302300
73 High-Limit Switch Wire Harness All R0322600
(not shown)
74 Pres. Switch & Siphon Loop Assy All R0322900
75 Pressure Switch, 2 PSI All R0013200
76 Pressure Switch Siphon Loop All R0307800
77 Temp. Control Assy, Electronic All R0011700
78 Temp. Sensor (not shown) All R0011800
79 Temp. Sensor Gasket All E0116400
80 Temp. Sensor Plastic Sleeve 10444900+
81 Temp. Control Knob All R0010700
82 Pool/Spa Selector Knob All R0099900
83 “Temp-Lok” Disc All 10583100
84 Temp. Sensor Retainer Clip All 10716701
(not shown)
85 Differential Pressure Switch All R0302000
86 Differential Pres. Switch Bracket All R0302200
87 Exhaust Vent Limit Switch All R0309000
88 Burner High Limit Switch All R0319700
89 Combustion Blower Wire Harness All R0308100
OPTIONAL COMPONENTS
Touch Up Spray Paint All R0335800
High Temp. Silicone Sealant All R0322800
Heat Exchange Baffl es 350 R0410100
NOTES:
1. All hardware sets contain all pieces necessary for
assembly, including gaskets. Not shown.
2. Gaskets and hardware are included in all kits that
involve the removal of a gasket as part of the
procedure to replace a part.
Key Model ORDER
No. Description No. PART NO:
Key Model ORDER
No. Description No. PART NO:
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