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18
20
21
17
16
18
20
21
17
44
transferred to the cooler water, thereby increasing the performance of the unit. The
condensate yielded by this process is discharged via the condense trap (23).
The insulation layer (24) prevents heat loss. The inside of the tank is enamelled to protect
against corrosion. The anodes (9) provide extra protection against corrosion.
The water heater has an inspection and cleaning opening (12) for maintenance.
Fig. HWHC water heater
16
7
4
6
28
30
3
9
13
12
59
30
15
14
24
29
2
5
1
Installation, Maintenance and Service part
1.
Cover
2.
Hot water outlet
19
3.
Electrical connector block
4.
Controller
58
5.
Pressure switch
8
6.
Control panel
7.
Temperature sensor T
8.
Combustion chamber
9.
Anode
10.
Tank
22
11.
Heat exchanger
10
12.
Inspection and cleaning
11
opening
13.
Temperature sensor T
14.
Cold water inlet
23
15.
Drain valve
16.
Gas control valve
55
17.
Burner
18.
Fan
56
19.
Air supply hose
20.
Hot surface igniter
21.
Flame probe
22.
Chimney pipe
23.
Condens trap
24.
Insulation layer
28.
Potentiostat
29.
Base
30.
Venturi
55.
Heat exchanger (e.g.
solar heating system)
56.
Temperature sensor S
58.
Flue gas test point
59.
Pressure-reducing valve
1
2
2
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