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Siemens Building Technologies
Room Temperature Controller REV23RF16A/SET
CE1N2269en
HVAC Products
09.10.2003
Setpoint limitation
PID mode, self-learning
Optimum start control
Periodic pump run off
Heating active
Heating engineer level
To access the heating engineer level, keep the «Warmer» and «Colder» buttons de-
pressed and simultaneously roll the roller selector away from the display and then to-
ward the display.
If the displayed temperature does not agree with the room temperature effectively
measured, the temperature sensor can be recalibrated (recalibration to be made on the
heating engineer level.)
The displayed temperature can be matched to the effective room temperature in incre-
ments of 0.2 °C (max. ± 2 °C).
Minimum setpoint limitation to 16 °C prevents undesired heat transfer to neighboring
apartments in buildings with several heating zones. The setting is to be made on the
heating engineer menu.
Optimization brings forward the switch-on point of the first heating period such that the
adjusted setpoint will be reached at the required time.
The setting depends on the type of controlled system, that is, on heat transmission
(type of piping system, radiators), building dynamics (building mass, insulation), and
heat output (boiler capacity, flow temperature).
Optimum start control is switched off at
t
T
17
18
19
- 4
- 2
2264D
03
16
- 3
1/4h/°C
1/2h/°C
1h/°C
Start
- 2
- 1
- ½
- 1½
- 1
- ½
- ¼
- ¾
P
on
20
°C
- 1 h
h
h
TR
x
h
h
h
h
h
h
h
h
h
1
st
heating period
(slow controlled system)
(medium controlled system)
(fast controlled system)
(no impact)
Optimum start controll Off
T
T Temperature
(°C)
TR
x
Actual valve of room temperature
t
Forward shift of switch-on point (h)
P
on
Starting point of optimum start control
REV23RF is a 2-position controller providing PID mode. The room temperature is con-
trolled by the cyclic switching of an actuating device.
The controller generates the positioning signals depending on the deviation of the set-
point from the actual value acquired by the built-in temperature sensor.
Factory settings
Heating engineer level
Access
Sensor calibration
CAL
Setpoint limitation
Optimum start control
Example using an actual
room temperature of 18 °C
and a setpoint of 20 °C
Control
