INSTALLER
34
On models 26 B and 35 B:
- Open the water supply shut-off cocks and slowly fill the
central heating system until the pressure gauge reads
out a value of
1.5 bar
(cold).
On models 26 BK and 35 BK:
- Open the filling cock (1) and slowly fill the central heat-
ing system until the pressure gauge installed as part of
the installation reads out a value of
1,5 bar.
- Close the water supply shut-off cocks. On models 26 BK
and 35 BK, close the filling cock (1) too. Tighten down
the cap on the automatic vent valve (5).
- Close the non-return valve (4) on the CH flow pipe. On
models 26 BK and 35 BK, close the non-return valve (5)
too. See the figure to ascertain the correct position for
the dot on the screw.
FILLING THE STORAGE CYLINDER
(models 26 BK and 35 BK only)
- Make sure that storage cylinder drain cock (fitted dur-
ing installation) is closed.
- Open the DHW user taps.
- Open the DHW circuit shut-off cocks and slowly fill the
storage cylinder until clean, air-free water flows out from
the taps in a uniform manner.
1
5
4
3
2
Non-return
valve OPEN
Non-return
valve OPEN
INSIEME CONDENS 26 BK and 35 BK
2
6
1
5
4
3
2
Non-return
valve in
CLOSED
(non-return)
position
Non-return
valve in
CLOSED
(non-return)
position
INSIEME CONDENS 26 BK and 35 BK
