Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 40

Preparing for installation
System version 3
qR Natural cooling extension kit
qT Central fault message (230 V)
qZ Power-OFF
qI KM BUS: Vitotrol 200 remote con-
trol (with room temperature sen-
sor), see also page 67
qO Room temperature sensor (if no
remote control is installed), see
also page 67
Connections to control module X80, 400 V
A Front of control module (with type
plate)
B Compressor power supply
C Internal connection to control
panel
D Primary pump connection (230 V)
E Compressor safety chain connec-
tion
F Phase monitor
G Phase monitor connection
H Compressor contactor
K Compressor or full wave soft star-
ter connection
40
(cont.)
wP KM BUS: Cooling circuit exten-
wQ Outside temperature sensor
wW Heating water buffer cylinder tem-
wR Collector temperature sensor
tP Extension kit for one heating cir-
L Primary temperature sensor (for
M Heat pump module
N Direct connection only with
O Connection required as of
P Connection required as of
R Full wave soft starter (as of
sion kit
perature sensor
(only with Vitocal 242)
cuit with mixer
control purposes)
BWT 106
BWT 108
BWT 108
BWT 108)