Notes On The Documentation; Observing Other Applicable Documents; Storing Documents; Validity Of The Instructions - Vaillant 0020230734 Betriebsanleitung

2

Notes on the documentation

2.1

Observing other applicable documents

▶
You must observe all the operating and installation in-
structions included with the system components.
2.2

Storing documents

▶
Pass these instructions and all other applicable docu-
ments on to the system operator.
2.3

Validity of the instructions

These instructions apply only to:
Product article number
Electrical immersion heater
3

Product description

3.1

Design of the product

9
8
7 6
1 Insulating element for
the upper half-ring
2 Inspection opening seal
3 Immersion heaters
4 Reducing flange, pre-
installed with seal to the
screw head
3.2

CE label

The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufac-
turer's site.
0020230754_00 0020230734 Installation instructions
0020230734
1
2
3
4
5
5 PG screwed connection
for the electrical con-
nection
6 Insulating element for
the lower half-ring
7 Insulating sleeve for the
immersion heater head
8 Setting control
9 Data plate
Notes on the documentation 2
4

Installation

4.1

Checking the scope of delivery

▶
Check that the scope of delivery is complete and intact.
Number Designation
Electrical immersion heater
1
Reducing flange
1
1 Inspection opening seal
1 Operating and installation instructions
5 Installation
Caution.
Risk of material damage caused by corro-
sion and short circuit caused by incorrect
earthing
If you insert an electrical immersion heater
into the cylinder, the existing external voltage
may build up electrical potential in the water,
which may result in the electromechanical
corrosion of the electrical immersion heater.
▶
Ensure that both the domestic hot water
and cold water pipes are directly connec-
ted to the cylinder via an earth cable to the
main earth rail.
▶
You must also ensure that the electrical
immersion heater is also connected to the
main earth rail via the earthing terminal.
Only qualified electricians may carry out the electrical install-
ation.
The electrical immersion heater must only be installed hori-
zontally. Vertical installation is not permitted.
Use a power supply cable that is permitted for a temperature
of 80 °C for the electrical connection.
Ensure that the domestic hot water cylinder is filled before
you start up the electrical immersion heater.
To ensure that the electrical immersion heater can work for
many years, the following minimum quality is recommen-
ded for the fresh water: Chloride content < 120 mg/l, water
hardness < 2.4965 mmol/l (< 14°dH;< 24.987°fH; < 140 mg
CaCO/l; < 249.87 mg CaCO₃/l; < 249.87 ppm (mg CaCO₃/l)).
If the water hardness is higher, we recommend using a water
softener.
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