De Dietrich MS 24 MI FF Manual Para El Usuario página 94

Figure 19
Key:
1 Automatic by-pass with check valve
2 Hydraulic pressure switch
3 Three-way valve
4 Three-way valve motor
5 Gas valve with gas diaphragm
6 Gas train with nozzles
7 NTC heating sensor
8 Ignition/flame detection electrode
9 Safety thermostat
10 Water-fumes exchanger
11 Fumes conveyor
12 Fan
INSTALLATION INSTRUCTIONS
24 FF
Heating flow Storage Gas DHW
boiler
flow
13 Venturi tube
14 Positive pressure tap
15 Negative pressure tap
16 Air pressure switch
17 Burner
18 Expansion vessel
19 Pump and air separator
20 Non-return valve
21 Boiler drain tap
22 Pressure gauge
23 Safety valve
24 Disconnector
94
Heating return
inlet
71.03982.03 - EN