Viessmann VITOCAL 300, Installation And Service Instructions Manual

Page: 39 / 160

A
Heating water return, R1"
B
Heating water flow, R1"
C
Secondary pump
D
Instantaneous heating water hea-
ter
Thoroughly flush the heating system
(particularly when connecting to an
existing system) and connect the flow
and return lines.
Power supply
Danger
Incorrectly executed electrical
installations can lead to injury
through the transmission of
dangerous body currents and
result in equipment damage.
Carry out the power supply
connection and all earthing
measures (i.e RCD circuit) in
accordance with IEC 364, the
requirements of your local
power supply utility, VDE or
national regulations.
Main isolator requirements (if necessary)
The main isolator must simulta-
neously isolate
all non-earthed con-
ductors with a minimum contact
separation of 3 mm.
Connections on the heating circuit side
39
Installation sequence
55
92
901
GB