Operating Instructions and Installation Instructions

27
Installation – for qualied contractors
14. Maintenance
WARNING Electrocution
Before any work on the appliance, disconnect all
poles from the power supply.
Draining the appliance
You can drain the appliance for maintenance work or to
protect it from frost.
WARNING Burns
Hot water may escape when the appliance is being
drained.
» Close the shut-off valve in the twin connector or the
cold water inlet line.
» Open all draw-off valves.
» Undo the water connections on the appliance.
» If dismantled, store the appliance in a room free from
the risk of frost, as water residues remaining inside
the appliance can freeze and cause damage.
Cleaning the strainer
26_02_02_0949
If dirty, clean the strainer in the threaded cold water tting.
Close the shut-off valve in the cold water inlet line before
removing, cleaning and retting the strainer.
15. Specication
15.1 Dimensions and connections
395
100
485
325
45
5
93
226
190
50
112
190
35
c01
c06
b02
D0000017757
b02 Entry electrical cables I
c01 Cold water Inlet Male thread G 1/2 A
c06 DHW outlet Male thread G 1/2 A
Alternative connection options
325
50
50
35
40
b03
b02
b04
b04
b04
D0000019778
b02 Entry electrical cables I
b03 Entry electrical cables II
b04 Entry electrical cables III
15.2 Wiring diagram
3/PE ~ 380 - 415 V
85_02_02_0005
1 Heater
2 High limit safety cut-out
3 Safety pressure limiter
Load shedding relay LR 1-A
85_02_02_0003_
2
1
1 Control cable to the contactor of the second appli-
ance (electrical storage heater for example).
2 Control contact opens when switching the instanta-
neous water heater on.