INSTALLER
33
2
6
FIllING AND EMPTYING THE SYSTEM
INSIEME CONDENS 26 B and 35 B
boilers need a fill-
ing pipe to be connected to the central heating circuit
return pipe. Models
26 BK and 35 BK
are equipped with
a filling cock (1) for the central heating system and stor-
age cylinder primary circuit.
b
See Appendix for further information on water treat-
ment for the central heating system..
FILLING THE CENTRAL HEATING SYSTEM
- Make sure that the boiler drain cock (2) is closed before
you start filling the system. On models 26 BK and 35
BK, make sure that the drain cock (3) is closed too.
- Open the non-return valve (4) on the CH flow pipe. On
models 26 BK and 35 BK, open the non-return valve (5)
too. See the figure to ascertain the correct position for
the dot on the screw.
- Slacken off the cap of the automatic vent valve (6) to let
air out of the system.
Sc
MI
RI
INSIEME CONDENS 26 B and 35 B
2
6
INSIEME CONDENS 26 B and 35 B
1
5
4
3
2
Non-return
valve OPEN
Non-return
valve OPEN
INSIEME CONDENS 26 BK and 35 BK
