Power Supply - Viessmann EHE Installation And Service Instructions For Contractors

Installation sequence
Fitting the immersion heater EHE
Note
The heating rods and sensor tube of the immersion
heater EHE must not come into contact with each
other.

Power supply

Isolators for non-earthed conductors:
Install an isolator in the power cable to provide omnip-
olar separation from the mains for all active conduc-
tors, corresponding to overvoltage category III (3 mm)
for full isolation. The isolator must be fitted in the per-
manent electrical installation, in line with installation
requirements.
Danger
Incorrectly executed electrical installations can
result in injuries from electrical current and dam-
age to the appliance.
Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord-
ance with the following regulations:
■ IEC 60364-4-41
VDE regulations
■
Technical connection requirements specified
■
by the local power supply utility
Danger
The absence of component earthing can lead to
serious injury from electric current if an electrical
fault occurs.
The appliance and pipework must be connected
to the equipotential bonding of the building.
Danger
Incorrect core assignment can result in serious
injury and damage to the appliance.
Never interchange cores "L" and "N".
Recommended power cable: H05V2V2-F
4
3.
SW 60
Fig. 1
5.
4x
1.
2.
Fig. 2
1. Open the casing.
2. Mount the cable fitting (supplied inside the casing).
4.
2.
1.
4.
3.