Rotex RKRTW Installationsanleitung Seite 16

6 Pass the indoor unit or motorized valve wiring through the
back of the thermostat.
7 According your application, perform the wiring.
7a When connected to the indoor unit, wire the indoor unit and
the thermostat as shown below.
RKHB(H/X)008
RKHB(H/X)016
H
C
For heating-only applications, wire 17-C or 2-C is not to be
installed.
Use wire size 0.75~1.50 mm
Installation manual
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H C L N
X2M 1 2 3 4
X1M
C
com
H
RKRTW
Heating demand
Cooling demand
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Room thermostat
RKRTW
4PW50082-1