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GT INSTALLATION AND OPERATION INSTRUCTIONSPage 42
REPLACEMENT PARTS LIST
Replacement parts are available from your stocking wholesaler. Homeowners must contact their
local installer or wholesaler.
Figure 49 - Replacement Parts Exploded View - Model GT400
Item Part Number Description
1 GT-83173 Premix Burner (For 400)
1A GT-82761 Premix Burner Gasket
2 GT-82457 Transformer, 24V
3 GT-83171 Sentry 2100 Assembly
4 GT-82994 EBM BLOWER #RG148/E
5 GT-82989 Gas Valve VR8615VB 1044B
5A GT-82991 Gas Valve Adapter, 3/4" NPT
5B GT-83194 Gas Valve Connector O-ring
GT-83016 Gas Valve Harness
6 GT-82662 Air switch Huba @ 0.2"wc.
6C GT-82539 Air Vent
7 GT-83035 Thermister NTC 1/4" NPT, 1Mohm
8 GT-82058 Ignition Module (Fenwal)
9 GT-82708 IGNITER, #601, c/w SS Heat shield
10 GT-82762 Flame Rod Rauschert
11 GT-82906 Air Switch 604.E421180 set @ 3" wc
12 GT-82992 Limit Switch, 1/4"NPT, (Manifold)
13 GT-82926 400 Heat Exchanger, ASME
14 GT-82993 Gas Valve Orifi ce, 8.0mm, NG
14A GT-83017 Gas Valve Orifi ce, 6.2mm, LP
15 GT-81887 Flow Switch, FS-10C
16 GT-82766 Blower Gasket
17 GT-83037 TEE NYLON 3/4"HB to 3/4"
17A GT-83038 ADAPTER NYLON, 3/4" x 1/4"
18 GT-82913 SIPHON CONDENSATE TRAP
19A GT-82769 Burner Door Ceramic Disc
19B GT-82770 Burner Door Viton Gasket
20 GT-82768 Igniter Gasket
21 GT-83034 Exhaust Test Plug
22 GT-83195 Extended Air Tube
23 GT-83141 Control Panel, Complete
24 GT-82990 CVI Venturi
25 GT-83106 O-ring, Venturi to Blower
26 GT-83001 Test Port Retaining Clamp
27 GT-82754-1 PCB Optocoupler
28 29 GT-83170-1 Air Metering Assembly
30 GT-81027-1 Sentry 2100 (10K) Outdoor Probe
31 GT-83018 Vent Screen, 4"
32 GT-83019 Vent Screen, 6"
33 GT-83013 Nipple, 1-1/4" x 8", Brass
34 GT-83005 1-1/4"x 1-1/4"x 3/4" Tee Brass
35 GT-13701 RELIEF VALVE 3/4" #335 30 PSI
36 GT-82148 PRESSURE GAUGE 0-30 PSI
37 GT-83112 Divider Insul. (c/w washer & screw)
Item Part Number Description
29
28
16
14
1A
10
18
5A
5B
5
24
25
4
1
22
37
23
20
19B
19A
17A
17
14A
36
34
30
13
26
21
19
9
2
8
3
11
6
6C
15
12
7
Reverse
Angle
30
33
32
31
SIOM-152