Draining The Appliance On The Dhw Side; Checking All Connections On The Heating Water And Dhw Sides For Leaks - Viessmann VITOCAL 151-A Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Draining the appliance on the DHW side

2.
8x
B
3.
6.
Fig. 63
1. Shut off the drinking water supply.
Note
Ensure adequate ventilation in the DHW pipework
by opening a cold and hot water tap.
2. Remove thermal insulation
3. Undo the screws.

Checking all connections on the heating water and DHW sides for leaks

Danger
There is a risk of electric shock from escaping
heating water or DHW.
When commissioning and after carrying out
maintenance work, check all water side connec-
tions for leaks.
82
A
4.
C
D
5.
.
A
4. Remove earth cable
B
Remove protective magnesium anode
5. Remove and dispose of gasket
6. Insert a hose into the DHW cylinder. Drain with a
pump.
.
.
C
D .