11
ENGLISH
GENERAL
WATER CIRCUIT
CH flow
CH return
HIGH
TEMPERATURE
ZONE
CH flow
CH return
GAS
1
DHW outlet
Cold water inlet
19
20
22
23
31
21
17
16
27
6
2 3
11
10
10
7
9
8
30
24
32
29
28
18
36
25
14
33
20
34
20
35
37
30
12
12
38
4
5
26
15
13
FIRST LOW
TEMPERATURE
ZONE
SECOND LOW TEMPERATURE
ZONE
(accessory kit)
CH flow
CH return
1 Primary heat exchanger
2 CH flow temperature sensor
3 Safety thermostat
4 Fan
5 Gas valve
6 CH return temperature sensor
7 Condensate drain siphon
8 Gas diaphragm
9 Sealed chamber
10 Drain
11 Bleed manifold
12 Automatic vent valve
13 CH circuit expansion vessel (12 litres)
14 CH system/storage cylinder pump with
de-airing device
15 Boiler drain cock
16 Delivery group
17 Water pressure switch
18 Drain cock for delivery group
19 CH circuit safety valve (3 bar)
20 Non-return valve
21 Deviator group and bypass
22 Automatic bypass
23 Deviator valve
24 130 litre storage cylinder
25 DHW circuit expansion vessel (6 litres)
26 DHW circuit safety valve (8 bar)
27 CH circuit fill cock
28 Magnesium anode
29 Storage cylinder flange
30 Drain cock
31 Bypass pipe
32 Fitting for DHW recirculation (if present)
33 Direct CH circuit pump
34 Mixed CH circuit pump
35 Mixer valve
36 Mixing column
37 Fittings for additional zone (accessory)
38 Manual bleed valve
