Siemens REV23 User Manual

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Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en
HVAC Products 23.04.2002
Heating engineer level
To access the heating engineer level, keep the warmer and colder buttons depressed
and simultaneously roll the roller selector away from the display and then toward the
display.
If the displayed temperature does not correspond to the effective room temperature, the
temperature sensor can be recalibrated (recalibration to be made on the heating engi-
neer 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 of 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 desired 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
2264D03
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 value of room temperature
t Forward shift of switch-on point (h) P
on
Starting point of optimum start control
The REV23 is a 2-position controller providing PID mode. The room temperature is
controlled through the cycling switching of an actuating device.
The controller generates the positioning signals depending on the deviation of the ad-
justable setpoint from the actual value acquired by the built-in temperature sensor.
The rate of response to the deviation depends on the selected control algorithm:
The controller is supplied with an active self-learning operating mode, enabling it to
automatically adapt to the controlled system (type of building construction, type of ra-
diators, size of the rooms, etc.). After a certain learning period, the controller optimizes
its parameters and then operates with the learned parameters.
In exceptional cases, in which the self-learning mode may not be ideal, it is possible to
select PID 12, PID 6 or 2-Pt mode:
Accessing
Sensor calibration
CAL
Limitation of setpoint
Optimum start control
Example with an ac-
tual room temperature
of 18 °C and a setpoint
of
20 °C:
Control
Self-learning mode
Exceptions

Siemens REV23 Specifications

General

Brand	Siemens
Model	REV23
Category	Temperature Controller
Language	English