Technical information

29
LEGEND:
1- Fan
2
-
Bur
ner
3
-
Ignition/detection electrode
4 - Air release valve
5 - Main heat exchanger
6
-
Centr
al heating flo
w temper
ature probe
7
-
Condensate
Tra p
8
- Gas valve
9 - Pressure gauge
10
-
Saf
ety v
alv
e
11
-
Dr
ain valve
12
- Automatic By-pass
13 - Circulation pump with automatic
air release valve
14 - Expansion vessel
15 - Central heating return temperature probe
16
-
Air pressure s
witch
A - Central Heating Flow
C - Gas Inlet
E
-
Centr
al Heating Retur
n
FIG.
2.33
27/32 RFFI (System)