Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 44

Preparing for installation
System version 3
Information regarding other connections
The primary pump, the secondary pump, the instantaneous heating water hea-
ter and the central heating/DHW three-way diverter valve have already been
connected in the factory.
Components to be connected
Connect components for heating circuit with mixer to
extension kit tP
Connect capacitor to full wave soft starter
Only with natural cooling:
Connect the required components to extension kit wP
and natural cooling qR extension kit
Only when using an underfloor heating system:
Connect temperature limiter
Equipment required for system version 3
Pos. Description
1 Compact Energy Tower
6 Diaphragm expansion vessel for the heating circuit
7 Temperature limiter (only required for the underfloor heat-
ing circuit)
9 Heating water buffer cylinder
qP Underfloor heating circuit
qU KM BUS distributor
qI Vitotrol 200 remote control
qO Room temperature sensor
wW Cylinder temperature sensor for capturing the tempera-
ture inside the heating water buffer cylinder (top)
wI Heating circuit extension
wO Connection panel
rP Heating circuit pump, mixer circuit
rQ Flow temperature sensor, mixer circuit
rW Three-way mixer - mixer motor
tP Extension kit for one heating circuit with mixer
DHW circulation option
qE DHW circulation pump
wU DHW circulation extension
Option solar heating circuit (only with Vitocal 242)
44
(cont.)
Connection descrip-
tion
See separate installa-
tion instructions
see page 89
See separate installa-
tion instructions
See separate installa-
tion instructions
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