Viessmann Vitodens 100 WB1A Installation And Service Instructions Manual page 43

Electrical connections
fÖ Mains power connection 230 V ~
50 Hz (green plug)
Do not interchange the supply
conductors L1 and the neutral
conductor N.
A two pole shut off switch with a
contact separation of at least
3 mm must be fitted in the mains
supply to the boiler with a maxi-
mum fuse value of 3 A.
gH Mains connection accessories/
room temperature control/DHW
cylinder control (black plug)
(cont.)
A Room temperature control with
zero volt contact e.g. Vitotrol 100
UTD
If making the connection between,
"L" and "LR" remove jumpergH.
LR Connection of room temperature
control
&
Vitotrol 100 UTA
&
Vitotrol 100 UTD
If making the connection between,
"L" and "LR" remove jumper.
LS Connection of DHW cylinder con-
trol
Installation
43