Boiler Schematic - Baxi Combi LUNA DUO-TEC+ 1.28 GA Supplementary Manual For The Installer

Key:
1 Siphon
2 3-way valve with motor
3 Gas valve
4 105° safety thermostat
5 NTC heating sensor
6 Fumes sensor
7 Coaxial connector
8 Water-fumes exchanger
9 Ignition electrode
10 Burner
11 Flame detection electrode
12 Air/gas blend manifold
13 NTC heating sensor
14 Fan
15 Venturi
16 Expansion vessel
17 Pump with air separator
18 Boiler drain tap
19 Pressure gauge
20 Hydraulic Safety valve
21 Automatic by-pass
22 Hydraulic Pressure Sensor
23 Gas inlet tap
24 Central heating return
25 Boiler filling tap
26 DHW inlet tap
27 Storage tank safety valve
28 NTC storage tank sensor
29 Stainless steel water storage tank
30 Boiler drain tap
31 Central heating flow
SUPPLEMENTARY INSTRUCTIONS
FOR THE INSTALLER

12. BOILER SCHEMATIC

OUTLET WATER
STORAGE COIL
CT0739b / 1310_1907
26
GAS
REFILLING
INLET
OUTLET
DOMESTIC
DOMESTIC
WATER
HOT WATER
RECIRCULATION
INLET WATER
STORAGE COIL
7689373.01 - en