Viessmann Vitocal 252-A Series - Page 115

115
8x
A
B
D
C
2.
4.
3.
6.
5.
Fig. 79
A
Thermal insulation
B
Earth cable
C
Protective magnesium anode
D
Gasket
6. Insert a hose into the DHW cylinder. Drain with a
pump.
!
Please note
Negative pressure in the DHW cylinder can
cause material damage.
The air vent valve must always be open
when draining the DHW cylinder with a suc-
tion pump.
Commissioning, inspection, maintenance
Draining the appliance on the DHW side (cont.)
6222080