Fan; Air Pressure Switch; Pump; 3-Way Valve - Saunier Duval Sylva FF 24 E Servicing Instructions

BOILER SCHEMATIC

1 - 3-way valve

2 - Loss of water switch

3 - Pump

4 - CVI unit
5 - Gas valve
6 - Ignition electrode
7 - Injector manifold
8 - Flame detection electrode

9 - Heat exchanger

10 - Bleed valve
11 - Thermistor
12 - Expansion vessel

13 - Anode

14 - Cylinder
15 - Domestic thermostat
16 - Overheat safety thermostat
20
8
5
F
Diagram 10
10
SYLVA FF 24 E
21
L
21
H
11
9
16
7
6
4
3
1
A
17 - Expansion valve (6 bar)

18 - Domestic expansion vessel

19 - Drain valve

20 - Fan

21 - Air pressure switch

22 - Temperature/pressure relief valve (7 bar)
23 - Tundish
24 - Non-return valve
A - Heating return
B - Cold water inlet
C - Heating flow
D - Domestic hot water flow
F - Gas supply
10
13
12
15
2
19
24
C
D
22
14
18
23
17
B