Electrical Connection - Viessmann VITODENS 200-W Type B2HA Technical Manual

Design information

Electrical connection

The power supply must comply with the requirements of your local
power supply utility and current VDE [or local] regulations (a: ÖVE
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.
Connect the supply cables and accessories at the terminals inside
the boiler.
Allow cables/leads in the shaded area to protrude at least 800 mm
from the wall (see diagram):
B
200
Vitodens 200-W, 49 to 99 kW
A Reference point Vitodens top edge
B Area for power cables
Recommended cables
NYM 3 G 1.5 mm 2
– Power cables (incl. accessories)
– DHW circulation pump
Interlock switch
Install an interlock for open flue operation if an extractor (e.g. cooker
hood) is fitted in any room forming part of the interconnected com-
bustion air supply.
For this, the internal H2 extension (accessories) can be used. This
switches any extractors off when the burner is started.
Power supply for accessories
The power supply for accessories can be provided directly at the
control unit.
This connection is switched by the system ON/OFF switch.
VITODENS 200-W
(cont.)
A
2-core min. 0.75 mm
– AM1 or EA1 extension
– Outside temperature sensor
– Vitotronic 200-H (LON)
– Extension kit for heating circuit with mixer
(KM-BUS)
– Vitotrol 100, type UTDB
– Vitotrol 200-A
– Vitotrol 300-A
– Wireless base station
– Radio clock receiver
B
200
Vitodens 200-W, 120 to 150 kW
A Reference point Vitodens top edge
B Area for power cables
2 4-core 1.5 mm
or
3-core 1.5 mm
wire
– Vitotrol 100, type UTDB-RF
– Vitotrol 100, type UTA
If the total system current exceeds 6 A, connect one or more exten-
sions directly to the mains supply via an ON/OFF switch.
Where the boiler is sited in a wet room, the power supply connection
of accessories must not be made at the control unit.
Additional requirements when siting boilers operated with LPG
in rooms below ground level
According to TRF 1996 Vol. 2 – valid as of 1 September 1997 – an
external safety solenoid valve is no longer required when installing
the Vitodens below ground level.
A
2
2 without green/yellow
VIESMANN
51
4