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1-4 General Construction (Parts Names)
No.
1
2
3
4
5
Description
Front Panel
Casing Assembly
Heat Exchanger
Exhaust Chamber Assembly
Gas Connection
Description
Water Filter Assembly
Drain Plug
Water Flow Sensor
Surge Protector
Water Flow Contorol Device
No.
11
12
13
14
15
No.
21
22
23
24
25
Description
Junction Box
Heat Exchanger Thermistor
Manifold Assembly
Flame Rod
Electrode
6
Modulation Valve Unit
(Gas Control Assembly)
Over Heat Switch
(bi-metal switch)
16
26
Frost Sencing Switch
(bi-metal switch)
7
8
9
10
Combustion Fan Motor Assembly
Transformer(100V)
Water Inlet
Hot Water Outlet
Outgoing Thermistor
Igniter Transformer
Thermal Fuse Device
PCB Unit
17
18
19
20
27
28
29
30
Burner Assembly
Combustion Chamber Assembly
Fuse(3.15A)
Fuse(5A)
15
8
18
25
23
3
4
26
2
27
6
14
30
20
29
24
28
21
1
16
7
19
22
17
5
11
9
13
10
12
10
21
