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Siemens Building Technologies CE1N2252E / 14.01.1999
Landis & Staefa Division 7/8
When installing the room temperature controller, the base plate must first be fitted
and wired. Then, the unit is engaged at the top, swung downward and secured with a
screw.
For more detailed information, please refer to the installation instructions supplied
with the controller.
For the electrical installation, the local safety regulations and standards must be
complied with.
The remote operation contact T1 / T2 must be wired separately, using a separate
shielded cable.
The battery transit tab, which prevents inadvertent operation of the unit during trans-
port and storage, must be removed from the batteries.
The control characteristics can be changed with the help of the DIP switches located
at the rear of the unit. For detailed information, please refer to the commissioning in-
structions.
If the reference room is equipped with thermostatic radiator valves, they must be set
to their fully open position.
If the displayed room temperature does not agree with the measured room tem-
perature, the temperature detector should be recalibrated (please refer to
"Calibration of detector")
L
L1
Y1
M1
N1
A
C
2
4
...2
5
0
V
2252A01
N
L2
L
L1
Y1
M1
N1
A
C
2
4
...2
5
0
V
2252A02
N
S1
T1 T2
L2
REV22 REV22T
L Live, AC 24 250 V S1 Remote operation unit (potential-
free)
L1 N.O. contact, AC 24 250 V /
6 (2,5) A
T1 Signal "remote operation"
L2 N.C. contact, AC 24 250 V /
6 (2,5) A
T2 Signal "remote operation"
M1 Circulating pump Y1 Regulating unit
N1 REV22 controller
Fitting and installation
Commissioning
Connection dia-
grams
7


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