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3 – table;
4 – gas and water unit;
5 – burner;
6 – cold water supply fitting;
7 – gas supply fitting;
8 – hot water output fitting;
9 – gas removal device;
10 – plug
11 – flame sensor;
8.2.6. When water flow stops or when its consumption reduces to a value less than 2,5...6 l/min (depending on the position of water
consumption regulator 1) the contacts of the micro switch 17 open and the valves 13 and 30 close. The burner flame goes out.
8.2.7. The appliance is equipped with safety devices that provide:
-gas access to the burner only in case if there is water flow;
-stop of gas supply to the burner in case if its flame goes out
-switching the appliance off in case of no draught in the exhaust flue
-switching the appliance off at water heating for more than 90 °С;
- switching the appliance off a electrical power loss
1 – water consumption regulator;
2 – gas consumption regulator;
3 –water temperature display;
4 – gas and water unit;
5 – burner;
6 –cold water inlet;
7 – gas inlet;
8 – hot water output;
9 – gas removal device;
10 – plug;
Scheme 14. Appearance of the appliance without casing
11 – flame sensor;
12 – heat exchanger;
13 – electromagnetic valve;
14 – battery section;
15 – electronic control unit;
16 – thermo relay (draught sensor);
17 – micro switch;
18 – water temperature sensor;
19 – thermo relay (water overheating sensor);
20 – water drain gag;
Scheme 15. Flow chart of the appliance
14 – battery section
15 – electronic control block;
16 – thermo relay(draught sensor);
17 – micro switch (water flow sensor);
18 – water temperature sensor;
19 – thermo relay (water overheating sensor);
20 – water drain gag;
21 – gas pressure measuring fitting;
22 – back wall.
23- casing fixation screws
21 – gas pressure measuring fitting;
22 – water unit;
23 – water filter;
24 – water consumption restrictor;
25 – membrane;
26 – Venturi fitting;
27 – water outlet to the heat exchanger;
28 – gas unit;
29 – gas filter.
30- gas valve
31- gas outlet to the burner
User's and technical staff manual
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