Operation Of The Vitodens In Wet Rooms; Electrical Connection; Gas Connection - Viessmann VITODENS 050-W Technical Manual

Design information

Operation of the Vitodens in wet rooms

Room sealed operation
■ The Vitodens is approved for installation in wet rooms.
■ Vitodens 050-W, Vitodens 100-W: Protection rating IP X4 splash-
proof
The boiler may be installed in safety zone 1 if hosed water
(e.g. from massage showers) is prevented.
Open flue operation
■ Vitodens 050-W, Vitodens 100-W may only be installed in safety
zone 1 or 2 if additional splash protection (part no. 7590109) is fit-
ted.
■ These systems must not be installed in safety zones 1 or 2.
When installing the Vitodens in wet rooms, observe the safety zones
and minimum wall clearances according to VDE 0100 [or local regu-
lations]: (See chapter "Electrical safety zone").
Electrical safety zone
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Electrical connection

The power supply must comply with the requirements of the local
power supply utility and current VDE [or local] regulations!
The power supply must comply with the requirements of the local
power supply utility and current ÖVE [or local] regulations!
Protect the power cable with a fuse with a max. rating of 16 A.
We recommend installing an AC/DC-sensitive RCD (RCD class B)
for DC (fault) currents that can occur with energy efficient equip-
ment.
Make the power supply (230 V~, 50 Hz) via a permanent connection.
Flexible connecting cable included in standard delivery:
Recommended cables
Flexible connecting cable max. 3 x 1.5 mm
– Power cables (accessories)
– DHW circulation pump

Gas connection

Gas installations must only be carried out by a registered gas fitter
authorised by the relevant gas supply utility.
Connect and size the mains gas according to TRGI 2018 or TRF
2012 [or local regulations].
Connect the mains gas according to ÖVGW-TR Gas (G1) and the
regionally applicable building regulations.
Max. test pressure 150 mbar (15 kPa).
We recommend installing a gas filter to DIN 3386 in the gas line.
VIESMANN
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(cont.)
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Area 2
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Electrical equipment in rooms containing a bathtub or a shower must
be installed in such a way that users cannot be exposed to danger-
ous shock currents. VDE 0100 specifies that cables supplying per-
manently installed consumers in zones 1 and 2 should only be run
vertically and routed into the equipment from the back.
Approx. 2 m long
It can be connected via an on-site junction box outside the appli-
ance.
The power supply for the accessories is connected at the terminals
in the appliance. The cables are inserted into the boiler through the
underside.
Outside temperature sensor, cylinder temperature sensor are con-
nected to an external plug:
Plug on the underside
Flexible 2-core connecting cable min. 0.75 mm
Outside temperature sensor
Thermally activated safety shut-off valve
According to paragraph 4, section 5 of the FeuVo 2008 [check local
fire regulations], thermally activated shut-off equipment must be
installed in combustion equipment or in gas supply lines immediately
upstream of the combustion equipment. This equipment must shut
off the gas supply if the external temperature exceeds 100 °C. The
valves must isolate the gas supply for at least 30 min up to a temper-
ature of 650 °C. This is intended to prevent the formation of explo-
sive gas mixtures in the event of a fire.
The gas shut-off valves supplied with the Vitodens are equipped with
integral, thermally activated safety shut-off valves.
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VITODENS