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Siemens Building Technologies Product-Data Sheet Radio signal unit REV... CE1N2255en
Landis & Staefa Division 16.10..2000
If the displayed room temperature does not agree with the measured room tempera-
ture, the temperature sensor can be recalibrated.
When the setting slider is set to position
Day /
, press button . Then, the display will
change as follows:
1234567
0 6 12 18 24
2252Z14
By pressing button or , the temperature can be changed in increments of 0.2
°C (max. ±2 °C). On completion of the readjustment, the setting slider must be reset to
the Auto / Run position.
When pressing buttons
and simultaneously, all individual settings will
be reset to their standard values.
Resetting also serves as a display check:
1234567
0 6 12 18 24
COOLING
2252Z13
After a reset, all individual settings such as time of day, weekday, switching times, etc.,
must be re-entered.
Technical design of controller / transmitter REV22RF
OPTIMUM P.1
OFF
1h / °C
1/2h / °C
1/4h / °C
123
2252Z01
P.1
Optimization brings forward the switch-on point P.1 such that the adjusted setpoint will
be reached at the desired time. The setting depends on the type of control system in
use, that is, on heat transmission (piping system, radiators), building dynamics (building
mass, insulation), and heating output (boiler capacity, flow temperature). The optimiza-
tion is set with DIP switch no.1 as follows:
OFF No effect
1/4h/°C For fast controlled systems
1/2h/°C For medium controlled systems
1h/°C For slow controlled systems
t
T
17
18
19
- 4
- 2
2252D01
16
- 3
1/4h/°C
1/2h/°C
1h/°C
P.1
- 2
- 1
- ½
- 1½
- 1
- ½
- ¼- ¾
P
on
20
°C
T1
- 1
h
h
h
TR
x
h
h
h
h
h
h
h
h
h
T Temperature (°C) TR
x
Actual value of room temperature
t Forward shift of switch-on point (h) P
on
Starting point for optimum on
Calibration of sensor
Reset
DIP switch no. 1
Optimum start control
5


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