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T e c h n i c a l N o t e b o o k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T e c h n i c a l T r a i n i n g
Hydraulic description of open flue appliances :
1
Pressure relief valve (3 bar)
2
Gas valve
3
Primary filter
4
Igniter
5
Burner
6
Heating flow temperature sensor
7
Ignition electrode
8
Combustion chamber
9
Heat exchanger
10 Draught diverter
11
Over flow safety device
12 Expansion vessel
13
Flame control electrode
14 Heating return temperature sensor
15 Pump air vent
16 Pump
17 Pressure sensor
18 By-pass
19
3-way valve
20 Plate heat exchanger
21
Cold water flow detector
22
Cold water filter
23
Filling loop assembly
24 Drain cock
A
Heating flow
B
Hot water outlet
C
Gas inlet
D
Cold water inlet
E
Heating return
F
Drain pipe
18
10
9
8
6
5
4
2
1
11
14
17
16
15
19
23
24
7
13
12
3
20
21
22