De Dietrich MS 24 MI FF Notice D'installation, D'utilisation Et D'entretien page 95

Figure 20
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
INSTALLATION INSTRUCTIONS
24
Heating flow Storage Gas
boiler
flow
11 Fumes conveyor
12 Fumes thermostat
13 Burner
14 Expansion vessel
15 Pump and air separator
16 Non-return valve
17 Boiler drain tap
18 Pressure gauge
19 Safety valve
20 Disconnector
95
DHW Heating return
inlet
71.03982.03 - EN