Viessmann Vitopend 100-W Installation And Service Instructions Manual page 11

Electrical connections
■ Install a circuit breaker in the power
supply line that simultaneously iso-
lates all non-earthed conductors from
the mains with at least 3 mm contact
separation.
■ Wire the power supply with a neutral
conductor.
Power supply for accessories (on-site)
If the boiler is installed in wet areas,
accessories outside the wet area must
not be connected to the power supply at
the control unit. The power supply con-
nection for accessories can be made
immediately at the control unit, if the
boiler is installed outside wet areas. This
connection is controlled directly with the
system ON/OFF switch (max. 1A)
Recommended power cable:
NYM with the required number of con-
ductors for the external connections.
Accessories:
■ Vitotrol 100, type RT
■ Vitotrol 100, type UTA
Routing power cables
!
Please note
If power cables touch hot components they will be damaged.
When routing and securing cables/leads on site, ensure that the maximum
permissible temperatures for these cables/leads are not exceeded.
(cont.)
■ Connect water pipes to the equipoten-
tial bonding of the house in question.
■ Max. fuse rating 16 A.
■ Recommended power cable:
NYM-J 3 x 1.5 mm
230 V~, 50 Hz.
■ Vitotrol 100, type UTDB
■ Vitotrol 100, type UTDB-RF
Connection of accessories
Accessory installation instruc-
tions
Note
When connecting a Vitotrol 100, remove
the jumper between "1" and "L".
Installation sequence
2 , max. fuse 16 A,
11