INsTALLATIoN
Maintenance
EN
GL
ISH
www.stiebel-eltron.com
DEL Plus |
41
16. Maintenance
WARNING Electrocution
Before any work on the appliance, disconnect all poles
from the power supply.
This appliance contains capacitors which are discharged
when disconnected from the power supply. The capacitor
discharge voltage may briefly exceed 60 V DC.
Draining the appliance
The appliance can be drained for maintenance work.
WARNING Burns
Hot water may escape when you drain the appliance.
f
f
Close the 3-way ball shut-off valve or the shut-off valve in the
cold water inlet line.
f
f
Open all draw-off valves.
f
f
Undo the pipe connections from the appliance.
f
f
Store the dismantled 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
If dirty, clean the strainer in the threaded cold water fitting. Close
the 3-way ball shut-off valve or the shut-off valve in the cold water
inlet line before removing, cleaning and refitting the strainer.
17. Specification
17.1 Dimensions and connections
466
225
35
35
414
38
105
≤ 20
140
30
b02
100
c01
c06
368
116
D
00000
73
25
3
DEL Plus
b02 Entry electrical cables I
On unfinished walls
c01 Cold water inlet
Male thread
G 1/2 A
c06 DHW outlet
Male thread
G 1/2 A
Alternative connection options
165
b04
b04
69
330
b04
69
325
b04
b04
b03
20
35
30
b02
D
00000
53
29
3
DEL Plus
b02 Entry electrical cables I
On unfinished walls
b03 Entry electrical cables II
On unfinished walls
b04 Entry electrical cables III
On finished walls
17.2 Wiring diagram
3/PE ~ 380-415 V
D
00000
53
42
4
1
3
4
2
1 Power PCB with integral safety switch
2 Bare wire heating system
3 High limit safety cut-out
4 Mains terminal
Priority control with LR 1-A
85
�0
2�
02
�0
00
3�
2
1
1 Control cable to the contactor of the second appliance (e.g.
electric storage heater)
2 Control contact drops out when switching the instantaneous
water heater on.