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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
2/12 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 ac- cepted)
3/12 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 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 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
4/12 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
5/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 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 18 20 22 08 10 18 22 h T T 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 16 °C 18 20 22 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
6/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 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 T2 T1 2252Z05 T2 T1 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 19 23 23 20 23 21 23 16 16 29 29 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 5 35 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 Factory settings heating engineer level
7/12 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 Pon 20 °C - 1 h h h TRx h h h h h h h h h 1st heating period (slow controlled system) (medium controlled system) (fast controlled system) (no impact) Optimum start controll Off T T Temperature (°C) TRx Actual 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 of 20 °C: Control Self-learning mode Exceptions
8/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 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
9/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 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
10/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 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 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
11/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 Connection diagram L L1 Y1 M1 N1 AC 24...250 V 2252A02 N S1 T1 T2 L2 L N DC 3 V L Live AC 24…250 V N1 Room temperature controller REV23 L1 N.O. contact, AC 24…250 V / 6 (2.5) A S1 Remote operating device (potentialfree) L2 N.C. contact, AC 24…250 V / 6 (2.5) A T1 Signal “remote operation” M1 Circulating pump T2 Signal “remote operation” N Neutral conductor Y1 Actuating device Application examples F2 F1 Y2 T T M1 N1 T 2261S03 T F1 F2 N1 M1 Y2 2261S01 T T Instantaneous water heater Atmospheric gas burner 2261S02 M M Y3 N1 T N1 T Y4 T N1 2264S01 E1 Zone valve Cooling equipment
12/12 Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en HVAC Products 23.04.2002 E1 Cooling equipment F1 Limit thermostat F2 Safety limit thermostat M1 Circulating pump N1 Room temperature controller REV23 Y1 3-port valve with manual adjustment Y2 Solenoid valve Y3 Motorized 3-port valve Y1 2261S04 M1 T N1 Y4 Motorized 2-port valve Circulating pump with precontrol via manual mixing valve Dimensions 127 140 78.8 104.5 83.50 56 12 11.75 2264M01 30 Ø60 ã2001 Siemens Building Technologies AG Subject to alteration
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