Sensor Calibration; Setpoint Limitation - Siemens REV23RF16A User Manual

Factory settings
Heating engineer level
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
Siemens Building Technologies
HVAC Products
Setpoint limitation
PID mode, self-learning
Optimum start control
Periodic pump run off
Heating active
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
P
on
°C
20
TR
19
x
18
17
16
- 4 h
1h/°C
- 2 h
1/2h/°C
- 1 h
1/4h/°C
Optimum start controll Off
T Temperature (°C)
t Forward shift of switch-on point (h)
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.
Room Temperature Controller REV23RF16A/SET
- 3 h - 2 h
- 1
- 1½ h h
- ¾ h - ½ h
TR
x
P
on
T
1 heating period
st
Start
- 1 h
(slow controlled system)
- ½ h
(medium controlled system)
- ¼ h
(fast controlled system)
(no impact)
Actual valve of room temperature
Starting point of optimum start control
t
7/16
CE1N2269en
09.10.2003