Frost Protection - Bosch ZSB 30-2 A Operating Instructions Manual

4.8

Frost protection

Frost protection for the heating system:
B Leave appliance switched on, set CH flow temperature control
to position 1 at least.
Fig. 13
B Add anti-freeze to the heating water (see installation
instructions) and drain the DHW circuit.
Additional instructions are contained in the operating instructions
for the heating programmer.
Frost protection for the cylinder:
B Turn DHW temperature controller clockwise as far as it will go
(5 °C).
Fig. 14
6 720 644 144 (2010/09)
3
5
2
1
6
max
3 4
2
5
1 6
max
reset
eco
3 4
e
2
6
1
max
min
6 720 644 143-31.1O
eco
3
e
2
1 6
min
max
6 720 644 143-32.1O
Operation | 27