Checking The Electrical Connections For Firm Seating; Cleaning The Interior; Commissioning The System - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Checking the expansion vessel and heating...
3. Top up with water until the filling pressure exceeds
the pre-charge pressure of the expansion vessel.
On a cold system, the charge pressure must be
approx. 0.2 bar (20 kPa) higher than the static
pressure.

Checking the electrical connections for firm seating

Cleaning the interior

!
Please note
Chemical deposits in the interior can cause
appliance damage.
Only clean the interior with clean water; maxi-
mum temperature 50 °C.
5.
2.
B
Fig. 45
Interior
A
Condensate drain
B

Commissioning the system

Commissioning (configuration, parameter settings and
function check) can be carried out with or without the
commissioning wizard (see following chapter and serv-
ice instructions for the heat pump control unit).
52
4. During commissioning, mark this value on the
pressure gauge as minimum charge pressure.
3. Clean the interior with a vacuum cleaner first and
then with a hand shower. If necessary, wipe dry
with a soft cloth.
!
4.
1.
5. Assembly: steps 1 to 2 in reverse order
Note
When the cover is closed, the two "arrow" mark-
ings must be aligned with each other.
A
Note
The type and extent of the parameters depend on the
appliance type, on the selected system scheme and
the accessories employed.
(cont.)
Please note
Freezing condensate in the heat pump leads
to appliance damage.
Check condensate drain
B
age, flush if necessary.
for free drain-