Viessmann Vitocal 222-S, Инструкция по установке и обслуживанию

Страница: 45 / 144

45
Information on drinking water filter
According to DIN 1988-2, a drinking
water filter should be installed in systems
with metal pipework. We also recom-
mend the installation of a drinking water
filter when using plastic pipes, according
to DIN 1988, to prevent contaminants
entering the DHW system.
Safety valve
Protect the DHW cylinder with a safety
valve against unduly high pressure. Recommendation: Install the safety
valve higher than the top edge of the cyl-
inder. This protects the valve against
contamination, scaling and high temper-
atures. The DHW cylinder does not then
need to be drained when working on the
safety valve.
Electrical connection
Routing electric cables to the internal unit wiring chamber
Danger
Damaged cable insulation can
cause injury and damage to the
appliance.
Route cables so that they cannot
touch very hot, vibrating or sharp-
edged components.
Danger
Incorrectly routed wiring can lead
to serious injury from electrical
current and result in equipment
damage.
■ Route LV leads < 42 V and
cables > 42 V/230 V~/400 V~
separately.
■ Strip the insulation from the
cables as close to the terminals
as possible, and bundle tightly
to the corresponding terminals.
■ Secure cables with cable ties.
This ensures that, should there
be an error, for example when
detaching a wire, the wires can-
not drift into the adjacent voltage
area.
Installation sequence
Connections on the DHW side
(cont.)
5600 950 GB
Installation