Siemens REV23 User Manual

CE1N2264en

23.04.2002

Siemens Building Technologies

HVAC Products

2

264

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 operat­ing 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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Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en
HVAC Products 23.04.2002

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 ac­cepted)

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Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en
HVAC Products 23.04.2002

Display

Time of day

° C

Room temperature

Change batteries (display appears about 3 months before bat­teries 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 incre­ments 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

h

Current time of day

Current day of week

Temperature Main menu Submenu

Factory settings – heating / cooling

T

Setpoint 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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Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en
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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

T

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