Bedienungsanleitung Siemens REV23.03RF (Seite 7 von 17) (Englisch)

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Building Technologies Raumtemperaturregler REV23.03RF CE1N2265en

HVAC Products 22.02.2006

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

- 4

- 2

2264D03

- 3

1/4h/°C

1/2h/°C

1h/°C

Start

- 2

- 1

- ½

- 1½

- 1

- ½

- ¼

- ¾

°C

- 1

heating period

(slow controlled system)

(medium controlled system)

(fast controlled system)

(no impact)

Optimum start controll Off

T Temperature (°C) TR

Actual valve of room temperature

t Forward shift of switch-on point (h) P

Starting point of optimum start control

REV23.03RF is a 2-position controller providing PID mode. The room temperature is

controlled 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.

The rate of response to the deviation depends on the selected control algorithm:

The controller is supplied with an active self-learning mode, enabling it to automatically

adapt to the type of controlled system (building construction, type of radiators, size of

the rooms, etc.). After a certain learning period, the controller optimizes its parameters

and then operates with the parameters it has learned.

PID 12 mode Switching cycle of 12 minutes for normal or slow controlled systems

(massive building structures, large spaces, cast-iron radiators, oil

burners).

PID 6 mode Switching cycle of 6 minutes for fast controlled systems (light building

structures, small spaces, plate radiators or convectors, gas burners).

2-Pt mode Pure 2-position control with a switching differential of 0.5 °C (±0.25 °C)

for very difficult controlled systems with considerable outdoor tempera-

ture variations.

For easy commissioning controller is set to 2-Point mode as factory

setting.

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

Self-learning mode

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