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7217395.01 - en
INSTRUCTIONS PERTAINING TO THE INSTALLER
Key:
1 D.H.W. priority sensor
2 Water pressure switch
3 Three way valve
4 D.H.W. NTC sensor
5 Flow sensor with lter and water ow rate limiter
6 Three way valve motor
7 Gas valve
8 Expansion vessel
9 Ignition electrode
10 Central heating NTC sensor
11 Overheat safety thermostat
12 Flue-water exchanger
13 Flue hood
14 Flue thermostat
15 Flame detector electrode
16 Burner
17 Burner injectors
18 D.H.W. plate heat exchanger (automatic by-pass)
19 Pump and air separator
20 System lling cock
21 Boiler drain point
22 Manometer
23 Pressure relief valve
Figure 16
heating domestic gas domestic heating
inlet water outlet water inlet return
0901_0805 / CG_1738
31. BOILER SCHEMATIC
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