Baxi ECO 3 Instructions Manual page 23

Figure 21
Key:
1 DHW priority sensor
2 automatic by-pass
3 water pressure switch
4 three way valve
5 DHW NTC sensor
6 flow sensor with filter and water flow rate limiter
7 3-way valve motor
8 gas valve
9 ignition electrode
10 central heating NTC sensor
11 overheat safety thermostat
12 flue-water exchanger
13 flue hood
instructions pertaininG to the
240 i
heating domestic gas
inlet water outlet
14 flue thermostat
15 flame detector electrode
16 main burner
17 burner injectors
18 expansion vessel
19 plate heat exchanger (D.H.W.)
20 automatic air vent
21 pump and air separator
22 filling the system
23 boiler drain point
24 manometer
25 pressure relief valve
instaLLer
23
domestic heating
water inlet return
924.674.3 - GB