Bosch ZWB 37-2 A - 4.8 Frost protection

Operation | 27
6 720 644 144 (2010/09)
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
eco
reset
max
1
2
3
5
6
max
1
2
3
4
e
6
6 720 644 143-31.1O
min
max
1
2
3
e
6
max
1
2
34
5
6
eco
6 720 644 143-32.1O
min