Viessmann Vitopend 100-W Installation And Service Instructions Manual page 14

Installation sequence
Electrical connections
■ 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.
Power supply for accessories (on-site)
If the boiler is installed in a wet area, the
power supply of accessories outside the
wet area must not be connected at the
control unit. The power supply connec-
tion for accessories can be made imme-
diately at the control unit, if the boiler is
installed outside wet areas. This connec-
tion 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.
14
(cont.)
2
, max. fuse 16 A,
■ 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".