Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 70

Installation sequence
Connecting the external electrical components
Extension kit for a mixer circuit and/or Vitotrol 200 remote
control (via KM BUS)
Note
General information regarding the room temperature sensors and remote con-
trols, see page 66.
A Terminals in the control panel
B Connection extension kit or KM
BUS distributor
DHW circulation pump
A Terminals in the control panel
B DHW circulation pump
Natural cooling function
The natural cooling function can be implemented with the "NC-Box" or via an
on-site installation.
70
(cont.)
Connection via KM BUS data cable.
Connect the mixer circuit pump to the
extension kit.
The connecting plug and cable (3 m
long) are supplied with the extension
kit. If several subscribers are to be
connected to the KM BUS we recom-
mend the use of a KM BUS distributor
(accessory).
Cores are interchangeable.
Extension kit installation
instructions
Breaking capacity: 230 V~, 0.7 A