Boiler Schematic - Saunier Duval THELIA 23 Installation And Operating Instructions Manual

1 - "ON" push - button.
2 - "OFF" push - button.
3 - Spark generator.
4 - Central heating water
temperature adjustment.
5 - Temperature gauge.
6 - Pressure gauge.
7 - Summer - Winter lever.
8 - Expansion vessel.
9 - Pump.
10 - Automatic air vent.
11 - Burner.
12 - Heat exchanger air vent.
13 - Heat exchanger.
14 - Multi - functional control.
23
22
13
12
20
11
10
9
8
7
30
21
Diagram. 21
12
THELIA 23, THELIA 23 E
15 - Safety electrovalve (THELIA 23 E only).
16 - Hight limit thermostat.
17 - Ignition electrode.
18 - Pilot (not THELIA 23 E)
19 - Hot water thermistor.
20 - Flame sense electrode (THELIA 23 E only).
21 - Loss of water switch.
22 - Fan.
23 - Airflow switch.
30 - Domestic hot water
A - Heating return
B - Cold water
C - Heating flow
D - Domestic hot water out
F - Gas inlet
A B C D

BOILER SCHEMATIC

temperature adjustment.
F
19
18
17
16
15
14
6
5
3
2
1
4