Siemens REV23 User manual

CE1N2264en

23.04.2002

Siemens Building Technologies

HVAC Products

2264

Self-learning Room

Temperature Controller REV23

5 operating modes, heating / cooling functions and menu selection via roller selector

•Mains-independent room temperature controller

•Straightforward, self-explanatory menu selection via roller selector

•Self-learning 2-position controller providing PID mode (patented)

•Choice of operating modes:

automatic with maximum 3 heating or cooling periods, continuously comfort

mode, continuously economy mode, frost protection with one 24-hour operat-

ing mode and one heating or cooling period

•In automatic mode, one temperature setpoint can be adjusted for each heating

or cooling period

•Control of cooling equipment

Use

For the control of the room temperature in:

•Apartments, single-family or holiday houses

•Offices, individual rooms, consulting rooms or commercially used spaces

For control of the following pieces of equipment:

•Solenoid valves of instantaneous water heaters

•Solenoid valves of atmospheric gas burners

•Forced draft gas or oil burners

•Circulating pumps in heating systems, zone valves

•Electric direct heating systems or fans of electric storage heaters

•Thermic actuators

•Cooling and refrigeration equipment

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Functions

•PID mode with self-learning or selectable switching cycle

•2-position control

•Automatic mode with 7-day switching program for 24-hour, working day, weekend or

7-day operation with up to 3 heating or cooling periods per day

•One temperature setpoint for each heating or cooling period

•One 24-hour operating mode with one heating or cooling period

•Remote operation

•Override button

•Sensor calibration and reset function

•Frost protection function or overtemperature protection

•Limitation of the minimum setpoint

•Holiday mode

•Heating or cooling mode

•Periodic pump run

•Optimum start control for the first heating period

Ordering

Room temperature controller with 7-day time switch REV23

When ordering, please give the type reference.

The controller is supplied complete with batteries.

Technical design

Display and

operating elements

Operating elements

Selection of operating mode

Warmer button

Colder button

Override button

Roller selector for the menu, submenu and settings

Confirm by pressing

Leaving the current menu level and returning to the menu level

previously active (the settings currently displayed will be ac-

cepted)

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Display

Time of day

° C Room temperature

Change batteries (display appears about 3 months before bat-

teries are exhausted)

Remote operation active

Holiday mode active

Selection of operating mode (only one operating mode is activ)

Automatic mode

Comfort mode

Economy mode

Frost protection or overtemperature protection

24-hour mode with one heating or cooling period

(heating or cooling period is automatically generated from the

current 24-hour program)

Temporary change of the current setpoint temperature

(change only active until the next switching point is reached)

° C When pressing the + or – button once, the adjusted setpoint

temperature will be displayed. It can be readjusted in incre-

ments of 0.2 °C (max. +/- 4 °C).

Override button

In operating modes and , this button can be used to switch from comfort

to economy temperature, or vice versa. The selection is maintained until the

next switching point is reached or until the operating mode is changed.

Menu-driven user settings: 4 main menus available

Time of day and day Main menu Submenu Settings

hCurrent time of day

Current day of week

Temperature Main menu Submenu Factory settings – heating / cooling

TSetpoint comfort mode 19 °C 23 °C

Setpoint economy mode 16 °C 29 °C

Setpoint frost

or overtemperature protection 5 °C 35 °C

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Setpoint economy mode

remote operation 10 °C 30 °C

Time switch Main menu Submenu Settings

Selection of day of week, working

day, weekend or week

Selection of the number of heating

or cooling periods, max. 3

Selection of heating / cooling period start and end time

° C

Selection of heating / cooling period setpoint temperature

Absence Main menu Submenu

Entry of holidays or periods of absence.

(number of days with economy mode setting /

max. 99 days)

Temperature setpoint during absence

Factory setting 12 °C

Menu-driven heating

engineer settings Main menu Settings

CAL Sensor calibration

Setpoint limitation

Optimum start control for first heating period

(in unit of time per 1 °C)

2-position control

PID mode, self-learning

PID mode with a switching cycle of 6 or

12 minutes

/Periodic pump run Off / On

Operating mode heating / cooling

In the automatic operating modes, temperature setpoints can be individually adjusted

for every comfort period and for the continuous operating modes. The temperature

setpoint of economy mode is the same in automatic and continuous operation.

In the frost or overtemperature protection mode, the room temperature is constantly

monitored. If it falls (rises) below (above) the adjusted setpoint, heating / cooling is

switched on to maintain the adjusted frost or overtemperature protection setpoint tem-

perature .

Temperature

setpoints

Protective function

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The controller generates the 24-hour operating mode from the current 24-hour pro-

gram. It automatically selects the switch-on time of the first heating / cooling period and

the switch-off time of the last heating / cooling period to generate and display a com-

plete heating / cooling period. The comfort temperature used by the controller is the

currently stored standard setpoint of the continuous operating mode . The self-

generated 24-hour operating mode is maintained until another operating mode is se-

lected.

2264Z01

°C

08 10 18 22 h

Automatically generated Current 24-hour switching program

24-hour operating mode

The switching program can be used as a 7-day or 24-hour switching program,

depending on programming. It is also possible to select one of the continuous operating

modes with which the switching program is not used.

With the 7-day switching program, it is possible to program all days individually, the

working days (1-5), the weekend (6-7), or the entire week (1-7).

When a heating / cooling period is programmed, 3 different switching patterns are

available.

It is possible to select 1, 2 or 3 heating / cooling periods.

For each heating / cooling period, the start time, end time and comfort setpoint are to

be entered. In between heating / cooling periods, it is always the same economy tem-

perature setpoint that is used. This economy temperature setpoint can be adjusted on

the temperature menu.

2261Z04

°C

08 10 18 22 h

Heating

period 1

Heating

period 2

The holiday function is to be selected on the user menu. Set the start of the holiday

period (day of departure/ / day of week), the duration and the temperature

setpoint ( ) during your absence. This will enable the controller to maintain the re-

quired temperature for a period of up to 99 days. Every midnight, the counter subtracts

one day.

24-hour operating mode

Example

Switching program

Example with 2 heating

periods per day

Holiday function

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When the holiday period is over and the counter reads 00, the controller will resume the

operating mode selected last.

Using a suitable remote operating device, the controller can be switched to an inde-

pendently adjustable economy temperature . Changeover is accomplished by the

making of a potentialfree contact connected to terminals T1 and T2. In that case, sym-

bol will appear on the display. When the contact opens, the operating mode se-

lected last will be resumed.

Operation according to the setting made on

the controller

Continuously remote operation economy

temperature

2252Z05

2252Z06

Suitable remote operating devices:

telephone modem, manual switch, window switch, presence detector, central unit, etc.

Switching times Temperatures in ° C

1st

period

2nd

period

3rd

period

Oper-

ating

mode

Block /

week-

days 1st period 2nd period 3rd period

Auto

1-5

Mo-Fr

6-7

Sa-Su

06.00

07.00

08.00

23.00

11.00 13.00 17.00 22.00 19

20 23 21 23 16

1-7

Mo-Su 00.00 24.00 19 23

1-7

Mo-Su 00.00 24.00 16 29

1-7

Mo-Su 00.00 24.00 535

10 30

Absence 12 30

Setpoint limitation

PID mode, self-learning

Optimum start control

Periodic pump run Off

Heating active

Remote operation

Remote operating

devices

Factory settings

heating engineer level

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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

- 4 - 2

2264D03

- 3

1/4h/°C

1/2h/°C

1h/°C

Start

- 2 - 1 - ½

- 1½

- 1 - ½ - ¼

- ¾

Pon

°C

- 1 h

TRx

1st heating period

(slow controlled system)

(medium controlled system)

(fast controlled system)

(no impact)

Optimum start controll Off

T Temperature (°C) TRxActual value of room temperature

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

20 °C:

Control

Self-learning mode

Exceptions

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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 tem-

perature variations.

Protects the pump against seizing during longer off periods. Periodic pump run is acti-

vated for one minute every 24 hours at midnight. This function can be selected on the

heating engineer menu.

Periodic pump run active: / periodic pump run inactive:

The controller is suited for cooling applications.

The function can be selected on the heating engineer menu.

The controller comes set for heating operation (refer to factory settings).

User-defined data:

Press the button behind the pin opening for at least one second: this resets the user-

specific settings to their default values (the heating engineer settings will not be

changed). The clock starts at 12:00. During the reset time, all sections of the display

light up, enabling them to be checked.

All user-defined data plus the heating engineer settings:

Press the button behind the pin opening together with the warmer and colder buttons

for at least one second.

After this reset, all factory settings will be reloaded (also refer to section “Factory set-

tings“).

Mechanical design

About 3 months before the batteries are exhausted, the battery symbol appears

on the display, but all functions will be fully maintained. When changing the batteries,

the current data will be retained for a maximum of one minute.

The REV23 has a plastic housing with a large display and easily accessible operating

elements. The controller is removed from its base by sliding it upward. It is thus possi-

ble to replace the two 1.5 V alkaline batteries type AA in the compartment at the rear of

the controller.

The base can be fitted to most types of commercially available recessed conduit boxes

or directly on the wall for wiring. The base only houses the terminals for the electrical

connection between the controller and connected devices. The entire electronics (in-

cluding the relay with a potentialfree changeover contact) are accommodated in the

controller.

Periodic pump run

Operating mode

heating / cooling

Reset functions

Battery change

Controller

Base

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Notes

•The room temperature controller should be fitted in the main living room

•The place of installation should be chosen such that the sensor can capture the room

temperature as accurately as possible, without being affected by direct solar radia-

tion or other heating or cooling sources

•Mounting height is approximately 1.5 m above the floor

•The controller can be fitted to most commercially available recessed conduit boxes or

directly on the wall

•Above the unit, there must be sufficient clearance for removing the controller from its

base and for replacing it

min.

10 cm

2261Z03

•When installing the controller, the base must first be fitted and wired. Then, the unit

can be slid onto the base from above

•For more detailed information, please refer to the installation instructions supplied

with the controller

•For the electrical installation, the local safety regulations must be complied with

•The remote operation contact T1 / T2 must be wired separately using a separate

screened cable

•The battery transit tab, which prevents inadvertent operation of the controller during

transport and storage, must be removed

•The control mode can be changed on the heating engineer level

•If the reference room is equipped with thermostatic radiator valves, they must be set

to their fully open position

•If the displayed room temperature does not correspond to the effective room tem-

perature, the temperature sensor should be recalibrated

(refer to “Sensor calibration”)

Engineering

Mounting and

installation

Commissioning

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Technical data

Operating voltage

Batteries (alkaline AA)

Battery life

Backup for batter change

DC 3 V

2 x 1.5 V

approx. 2 years

max. 1 min

Switching capacity of relay

Voltage

Current

AC 24…250 V

6 (2.5) A

Safety class II to EN 60 730-1

Sensing element

Measuring range

Time constant

NTC 10 kΩ±1 % at 25 °C

0…50 °C

max. 10 min

Setpoint setting ranges

Normal temperature

Economy temperature

Frost protection temperature

5…29 °C

5...29 °C (factory setting 5 °C)

Resolution of settings and display

Setpoints

Switching times

Measurement of actual value

Display of actual value

Display of time

0.2 °C

10 min

0.1 °C

0.2 °C

1 min

CE conformity

Electromagnetic compatibility

Low voltage directive

89/336/EEC

73/23/EEC

C-Tick N474

Automatic electrical controls for household

and similar use EN 60 730-1

Electromagnetic compatibility

Immunity

Emissions

EN 50082-1

EN 50081-1

Operation

Climatic conditions

Perm. ambient temperature

Humidity

class 3K3 to IEC 60 721-3

5...40 °C

< 85 % r.h.

Storage and transport

Climatic conditions

Ambient temperature

Humidity

Mechanism

class 2K3 to IEC 60 721-3

-25…+70 °C

< 93 % r.h.

class 2M2 to IEC 60 721-3

Incl. package 0.33 kg

Housing signal-white RAL9003

Base grey RAL7038

Housing 140 x 104.5 x 30 mm

General unit data

Norms and standards

Product standards

Environmental

conditions

Weight

Color

Size

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