Viessmann VITOPEND 100-W Installation And Service Instructions Manual page 10

Installation sequence
Electrical connections
Power supply (on-site)
Danger
Incorrect core terminations can
cause severe injuries and
damage to the equipment.
Take care not to interchange
cores "L1" and "N".
Install an isolator in the power sup-
ply line that simultaneously isolates
all non-earthed conductors from the
mains with at least 3 mm contact
separation.
The power supply must be equipped
with a neutral conductor.
Power supply for accessories (on-site)
Where the boiler is installed in a wet
area, the connection of accessories to
the power supply must not be carried
out at the control unit. The power sup-
ply connection 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. 3 A)
Connection of accessories
Accessory installation instruc-
tions
10
(cont.)
Water pipes should be connected to
the earth bonding of the house in
question.
Max. fuse rating 16 A.
Recommended power supply cable:
NYM-J 3 x 1.5 mm
230 V~, 50 Hz.
Vitotrol 100 , type RT
Vitotrol 100, type UTA
Vitotrol 100, type UTD
Recommended power supply cable:
NYM with the required number of con-
ductors for the external connections.
Note
When connecting a Vitotrol 100,
remove the jumper between "1" and
"L".
2
, max. fuse 16 A,