User Manual

Operation
Climatic conditions
Perm. Ambient temperature
Humidity
3K3 to IEC 60 721-3
5…40 °C
< 85 % r.h.
Storage and transport
Climatic conditions
Temperature
Humidity
Mechanism
2K3 to IEC 60 721-3
-25…70 °C
< 93 % r.h.
2M2 to IEC 60 721-3
Environmental
conditions
Incl. package 0.31 kg
Weight
Housing Signal white RAL9003
Base Gray RAL7038
Color
Housing 140 x 104.5 x 30 mm
Size
Connection diagram
COB
N1
N2
T1 T2
COA
2266A01
S1
N1 Room temperature controller REA23M
S1 Remote operator unit (potential free)
T1 Signal „Remote operation“
T2 Signal „Remote operation“
COA OpenTherm contact A (interchangeable)
COB OpenTherm contact B (interchangeable)
N2 BMU OpenTherm Plus
Application example
F2
F1
Y2
T
T
M1
N1
T
2266S01
N2
Instantaneous water heater
F1 Thermal reset limit thermostat
F2 Safety limit thermostat
M1 Circulating pump
N1 Room temperature controller REA23M
N2 BMU
Y2 Motorized 2-port valve
13/14
Building Technologies Room temperature controller REA23M CE1N2217en
HVAC Products 17.04.2007