Baxi LUNA 3 COMFORT MAX Installers And Users Instructions page 73

Figure 21
Key:
1 D.H.W. priority sensor
2 Automatic by-pass
3 Water pressure switch
4 Three way valve
5 Flow sensor with filter and water flow rate limiter
6 D.H.W. NTC sensor
7 Three way valve motor
8 Gas valve
9 Ex­pansion vessel
10 Ignition electrode
11 Central heating NTC sensor
12 Overheat safety thermostat
13 Flue-water ex­changer
instructions pertaininG to the installer
max 240 i
heating domestic gas
inlet water outlet
14 Flue hood
15 Flue thermostat
16 Flame detector electrode
17 Burner
18 Burner injectors
19 D.H.W. plate heat ex­changer
20 Automatic air vent
21 Pump and air separator
22 System filling cock
23 Boiler drain point
24 Manometer
25 Pressure relief valve
73
domestic heating
water inlet return
925.480.1 - GB