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
HVAC Products 23.04.2002
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
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