Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 25

System version 1
qQ Brine circuit pressure switch (if
the pressure switch is not
installed, use the jumper pro-
vided)
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
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.
(cont.)
qO Room temperature sensor (if no
wP KM BUS: Cooling circuit exten-
wQ Outside temperature sensor
wR Collector temperature sensor
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
Preparing for installation
remote control is installed), see
also page 67
sion kit
(only with Vitocal 242)
control purposes)
25