STIEBEL ELTRON PER 18/21/24 - Maintenance and Specifications; Anti-scalding Protection Settings; Draining the Appliance; Dimensions and Connections

18 | PER 18/21/24 www.stiebel-eltron.com
INSTALLATION
Maintenance
13.1.4 Anti-scalding protection menu
Code Meaning
OFF Anti-scalding protection switched off.
ON Anti-scalding protection switched on.
31-60°C Maximum selectable value on appliance when ON
Factory defaults (see chapter "Specification").
After exiting customer service mode, you cannot change the set
maximum temperature via the user interface.
CAUTION Burns
If operating with preheated water, the set temperature
limit and anti-scalding protection may be ineffective.
In such cases, limit the temperature with an upstream
central thermostatic valve.
14. Maintenance
WARNING Electrocution
Before any work on the appliance, ensure omnipolar dis-
connection from the power supply.
Draining the appliance
The appliance can be drained for maintenance work.
WARNING Burns
Hot water may escape when draining the appliance.
 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.
 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
26�02�02�0949
If contaminated, clean the strainer in the threaded cold water fit-
ting. Close the shut-off valve in the cold water inlet line before
removing, cleaning and refitting the strainer.
15. Specification
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