Siemens Building Technologies
CE1N2226E / 01.02.2000
Landis & Staefa Division
3/8
22
24Z
17
DIP-Switch
Reset
Temp.
Offset
If the measured room temperature does not agree with the temperature set on the knob,
the temperature detector can be recalibrated.
This can be done by adjusting a potentiometer that is located on the rear of the unit.
First, the unit must be removed from the socket.
The possible settings on the potentiometer are:
10
15
20
25
30
5
(°C)
(°C)
Pos.
22.00
20.00
8
21.75
20.00
7
21.50
20.00
6
21.25
20.00
5
21.00
20.00
4
20.75
20.00
3
20.50
20.00
2
20.25
20.00
1
20.00
20.00
0
<= Factory setting
19.75
20.00
F
19.50
20.00
E
19.25
20.00
D
19.00
20.00
C
18.75
20.00
B
18.50
20.00
A
18.25
20.00
9
After the corrections are made, the new setting must be confirmed by pressing the reset
button. Otherwise the previous settings are still active! After the reset the controller
can be remounted to the socket.
With the help of a suitable remote operation unit, the controller can be switched to the
economy temperature set for operating mode . Changeover takes place through the
making of a potential-free contact connected to terminals T1 and T2.
The LED indicates this by being light.
After the contact opens, the selected operating mode becomes active again.
Operation according to the settings made
on the controller
Continuous economy temperature
T2
T1
22
26Z
04
T2
T1
2226Z05
Suitable remote operation units are e.g.:
– Telephone
modem
– manual
switch
– window
switch
– presence detector
– central
unit
Calibration of detector
222
4Z04
Remote operation
