64
A
C
B
1.
Close shut-off valves
A
and
B
on
the heating water side (lever to the
right).
2.
Connect the drain hose to valve
D
and connect it to a drain outlet.
3.
Open valves
C
and
D
and vent
(flush) using mains pressure until no
more air noise is audible.
4.
Close valves
C
and
D
, open shut-
off valves
A
and
B
on the heating
water side.
5.
Adjust system pressure at fill valve
C
to > 1.0 bar.
Venting the heating system
1.
Vent heating system by bleeding the
radiators.
Vent the heating water buffer cylinder
separately when operating with a
multi mode heating water buffer cyl-
inder (see page 8).
2.
Check the system pressure.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5618 294 GB
Summary of Contents for C3HA
Page 39: ...39 2 2x 1 Installation sequence Removing the front panel 5618 294 GB Installation ...
Page 42: ...42 1 2 Installation sequence Removing the transport brackets 5618 294 GB ...
Page 151: ...151 Checking and replacing resistors B C A Troubleshooting Repairs cont 5618 294 GB Service ...
Page 181: ...181 Parts lists Control unit assembly cont 5618 294 GB Service ...
Page 183: ...183 Parts lists Miscellaneous assembly cont 5618 294 GB Service ...
Page 191: ...191 5618 294 GB ...
