Rotex RKRTW Manuel D'installation page 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
X2M
X1M
C
com
H
H Heating demand
C Cooling demand
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
3
H C L N
1 2 3 4
RKRTW
2
.
RKRTW
Room thermostat
4PW50082-1