Viessmann Vitovalor PT2 E11T Installation And Service Instructions Manual page 128

Troubleshooting
Repairs
(cont.)
C D
Fig. 78
128
1. Shut off connections
water side.
2. Attach the supplied short hose to drain valve
drain valve
3. Open drain valve
Note
If necessary, open the air vent valves on the two
outer shut-off valves above the modules.
4. If necessary, drain further via drain valves
and
module.
E
A and B
and connect to a drain.
H
or .
G H
. The drain hose is attached to the fuel cell
E
on the heating
or
G
,
C D