Maintenance; Specification; Dimensions And Connections; Wiring Diagram - Stiebel Eltron DHB 18 STi Utilisation Et Installation

INSTALLATIoN

Maintenance

15. Maintenance
WARNING Electrocution
Before any work on the appliance, disconnect all poles
from the power supply.
Draining the appliance
The appliance can be drained for maintenance work.
WARNING Burns
Hot water may escape when you drain the appliance.
f Close the 3-way shut-off valve or the shut-off valve in the f
cold water supply line.
f Open all draw-off valves. f
f Undo the water connections on the appliance. f
f Store the dismantled appliance in a room free from the risk f
of frost, as water residues remaining inside the appliance can
freeze and cause damage.
Cleaning the strainer
If dirty, clean the strainer in the threaded cold water fitting. Close
the 3-way shut-off valve or the shut-off valve in the cold water
supply line before removing, cleaning and refitting the strainer.

16. Specification

16.1 Dimensions and connections

225
140
b02
30
100
c06 c01
b02 Entry electrical cables I
c01 Cold water inlet
c06 DHW outlet
30 | DHB STi
20 110
35
121
DHB STi
Male thread G 1/2 A
Male thread G 1/2 A
Alternative connection options
b03
b04
b04
b02 Entry electrical cables I
b03 Entry electrical cables II
b04 Entry electrical cables III

16.2 Wiring diagram

3/PE ~ 380-400 V
1 Heating
2 High limit safety cut-out
3 Safety pressure limiter
Priority control with LR 1-A
2
1
1 Control cable to the contactor of the second appliance (elec-
tric storage heater, for example).
2 Control contact drops out when switching the instantaneous
water heater on.
b04
20
b02
b04
30
165
b04
DHB STi
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