Paloma PH-28CDVSN, Engineering Handbook

Page: 9 / 68

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OPERATIONAL PRINCIPLE
No. Name of Parts No. Name of Parts No. Name of Parts
1 Hot Water Tap 11 Solenoid Valve 2 21 Exhaust Outlet
2 Bypass Solenoid Valve 12 Solenoid Valve 3 22 Combustion Chamber
3 Water Flow Sensor 13 Proportional Gas Control Valve 23 Freeze Protection Heater
4 Water Inlet Thermistor 14 Orifi ce 24 Fan
5 Heat Exchanger Thermistor 15 Main Burner 25 Fan Motor
6 Hot Water Outlet Thermistor 16 Igniter 26 Drain Valve
7 Water Flow Servo 17 Electrode 27 PC Board
8 Water Filter 18 Flame Rod
9 Gas Inlet Solenoid Valve 19 Heat Exchanger
10 Solenoid Valve 1 20 Film Type OHL
M
M
Hot Water
Outlet
Gas
Inlet
21
19
14
15
16
18
22
20
23
27
25
24
5
17
7
2
4
3
8
1
26
6
13
9
12
10
11
Water
Inlet