Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 52

Preparing for installation
System version 4
qQ Brine circuit pressure switch (if
the pressure switch is not
installed, use the jumper pro-
vided)
qW Heating circuit pump, direct heat-
ing circuit
qE DHW circulation pump
qR Natural cooling extension kit
qT Central fault message
qZ Power-OFF
qI KM BUS: Vitotrol 200 remote con-
trol (with room temperature sen-
sor), see also page 67
Connections to control module X80, 230 V
A Front of control module (with type
plate)
B Compressor power supply
C Internal connection to control
panel
D Primary pump connection
E Compressor safety chain connec-
tion
52
(cont.)
qO Room temperature sensor (if no
wP KM BUS: Cooling circuit exten-
wQ Outside temperature sensor
wW Heating water buffer cylinder tem-
wR Collector temperature sensor
tP KM BUS: Extension kit for one
H Compressor contactor
K Full wave soft starter connection
L Primary temperature sensor (for
M Heat pump module
R Full wave soft starter
S Capacitor
remote control is installed), see
also page 67
sion kit
perature sensor
(only with Vitocal 242)
heating circuit with mixer
control purposes)