Venting On The Solar Side; Checking The Heating Water Buffer Cylinder - Viessmann VITOCELL 140-E Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Venting on the solar side

Fig. 33
1. Open and pull apart the clip fasteners.
2. Slightly pull the thermal insulation to the side.
Bleed solar circuit air vent valve
3. Close the thermal insulation back up again.
Insert the rear sections of the Vitotrans thermal
insulation. Observe the groove in the thermal insu-
lation.

Checking the heating water buffer cylinder

Inspection and maintenance
DIN 1988 requires a visual inspection and (if neces-
sary) cleaning no later than 2 years after the cylinder
has been commissioned, and thereafter according to
requirements.
As part of maintenance and inspection work on the
overall system, we recommend carrying out the follow-
ing checks on the heating water buffer cylinder.
Rectify any defects found.
Visual check of the thermal insulation
Check thermal insulation jacket for damage and
■
moisture.
■ Check thermal insulation caps for damage and mois-
ture.
40
3.
2.
A
1.
.
A
Note
If white creases appear on the surface of the thermal
insulation, these can be removed with hot air (e.g. from
a hair dryer).
Visual check of the positioning
Check that the heating water buffer cylinder is hori-
■
zontally level.
■ Check electrical cables for damage, e.g. sensor
leads.
Shut-off valves
Operate the shut-off valves on the flow and return
■
connections.
■ Operate the shut-off valves on the ventilation and
drain connections.
■ Check all shut-off valves for leaks and correct opera-
tion.