Siemens REA22 Basic Documentation Download Page 4

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CE1P2276E / 31.03.1999

Basic Documentation REA22

Issue 2.0

Siemens Building Technologies

4/30

Landis & Stefa Division

3.6

Battery change......................................................................................... 20

Description of heating engineer settings .................................................. 21

4.1

DIP switch 1 ............................................................................................. 21

4.1.1

Optimum start control ......................................................................... 21

4.2

DIP switch 2 ............................................................................................. 22

4.2.1

Limitation of setpoint........................................................................... 22

4.2.2

Cooling function .................................................................................. 22

4.2.3

Periodic pump run (pump kick) ........................................................... 22

4.3

DIP switch 3 ............................................................................................. 23

4.3.1

Control ................................................................................................ 23

4.3.2

Frost protection................................................................................... 23

4.4

Functional check ...................................................................................... 24

4.5

Calibration of sensor ................................................................................ 24

Applications................................................................................................. 25

5.1

Instantaneous water heater...................................................................... 25

5.2

Atmospheric gas burner ........................................................................... 25

5.3

Zone valve ............................................................................................... 25

5.4

Circulating pump with pre-control through manual mixing valve .............. 26

5.5

Refrigeration unit...................................................................................... 26

Dimensions .................................................................................................. 27

Technical data ............................................................................................. 28

Index............................................................................................................. 29

Summary of Contents for REA22

Page 1: ...CE1P2276E 31 03 1999 Siemens Building Technologies Landis Staefa Division REA22 Room Temperature Controller Basic Documentation Issue 2 0 Controller series A ...

Page 2: ... 1998 Siemens Building Technologies Ltd Siemens Building Technologies Ltd Landis Staefa Division Gubelstrasse 22 CH 6301 Zug Tel 041 724 11 24 Fax 041 724 35 22 http www landisstaefa com ...

Page 3: ...st startup 12 2 6 Short term individual settings 13 2 6 1 Short term increase decrease of actual room temperature 13 2 6 2 Short term change of temperature level 13 3 Description of end user settings 14 3 1 Set the time of day or weekday 14 3 2 Select operating modes 14 3 3 Enter individual temperatures and heating periods 15 3 3 1 7 day time switch 15 3 3 2 Check settings of the 7 day time switch...

Page 4: ... 4 2 1 Limitation of setpoint 22 4 2 2 Cooling function 22 4 2 3 Periodic pump run pump kick 22 4 3 DIP switch 3 23 4 3 1 Control 23 4 3 2 Frost protection 23 4 4 Functional check 24 4 5 Calibration of sensor 24 5 Applications 25 5 1 Instantaneous water heater 25 5 2 Atmospheric gas burner 25 5 3 Zone valve 25 5 4 Circulating pump with pre control through manual mixing valve 26 5 5 Refrigeration u...

Page 5: ...ng PID control patented Choice of three different 24 hour operating modes and one 7 day mode including in dividually adjustable 24 hour modes Control of cooling equipment 1 2 Features PID control Self learning or adjustable switching cycle time 7 day time switch Pre selected 24 hour operating modes Override button Reset function Sensor calibration Setting check Holiday mode 1 99 days Cooling funct...

Page 6: ...ulting rooms Commercially used spaces 1 3 3 Types of systems Standard heating systems such as Radiator heaters Convector heaters Underfloor heating systems Ceiling heating systems Radiant panels Cooling systems 1 3 4 Controllable equipment Solenoid valves of instantaneous water heaters Solenoid valves of atmospheric gas burners Forced draught gas and oil burners Electrothermal actuators Circulatin...

Page 7: ...fa Division Summary 7 30 1 4 Product liability The products may only be used in building service plants and applications as indi cated before When using the products all requirements specified under Technical data must be observed Local regulations for electrical installations must be complied with ...

Page 8: ...be fitted in the main living room The place of installation should be chosen so 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 approx 1 5 m above the floor The unit can be fitted to most commercially available recessed conduit boxes or di rectly on the wall ...

Page 9: ...ndling 9 30 2 2 Mounting Description Illustration Open screw on the controller without opening the cover 2276Z21 Lift controller from base 2276Z22 Mount base directly on the wall or onto a recessed con duit box 2276Z23 Connect wires to base For correct wiring refer to con nection diagram in this chapter 2276Z24 ...

Page 10: ...s for installation When installing the room temperature controller the base must first be fitted and wired Then the unit is engaged at the top swung downward and secured with a screw For the electrical installation the local safety regulations and standards must be com plied with 2 3 2 Connection diagram L L1 Y1 M1 N1 AC 24 250 V 2276A01 N L2 L Live AC 24 250 V L1 N O contact AC 24 250 V 0 1 6 2 5...

Page 11: ... Active normal temperature 2 Battery compartment 1 5V AA 1 5V AA Two alkaline batteries 1 5 V AA 3 Setting slider Day Time weekday 1 6 1 5 7 7 Switching pattern allocation block day T1 T2 T3 P 1 P 2 P 3 P 4 P 5 P 6 Switching times P 1 P 6 T1 T2 T3 Normal temperatures T1 T3 Economy temperature Holiday mode Auto Run Operating position 4 Setting buttons Day 1 6 1 5 7 7 Block day button Switching patt...

Page 12: ... to 4 as follows 1 1 5V AA 1 5V AA Open the cover and remove the battery compartment Remove the black transit tabs from the two batteries Place the battery compartment into its correct position again The unit switches itself on 2 D ay Move the setting slider to this position 2 1 Set the correct time of day with these buttons 2 2 Day 1 6 1 5 7 7 Set the correct weekday with this button 1 Monday 7 S...

Page 13: ...hows the newly selected temperature and then the actual value again If as a result of the factory settings you always feel either too warm or too cold you should readjust the temperatures or on the settings level see chapter Description of end user settings to suit your needs 2 6 2 Short term change of temperature level When pressing this button you change from the current temperature level to the...

Page 14: ...he operating mode selector to 24 hour mode with one heating period With that you use the 24 hour setting with one heating period Move the operating mode selector to 24 hour mode with one heating period With that you use the 24 hour setting with two heating periods Move the operating mode selector to 24 hour mode with one heating period With that you use the 24 hour setting with three heating peri ...

Page 15: ...kend 6 7 or day 1 7 and switching patterns can be set Day 1 6 1 5 7 7 Select the required block weekday 1 5 weekend 6 7 or individual day 1 7 by pressing this button Start to enter the switching times on the required block weekday 1 5 weekend 6 7 that are used for most of the days After that if required change with the individual day selection 1 7 the settings If you make settings for individual d...

Page 16: ... one heating period The controller can be assigned to a 24 hour switching pattern with one heating phase Proceed as follows Move the operating mode selector to 24 hour mode with one heating period enabling its block and switching pattern to be set With that you will afterwards use the 24 hour setting with one heating period P 1 Select the switching position e g P 1 and press to enter the required ...

Page 17: ...temperature is the same for all blocks Auto Run Move the setting slider back to this position and close the cover If a position cannot be set the display shows 3 3 5 24 hour mode with three heating periods The controller can be assigned to a 24 hour switching pattern with three heating peri ods Proceed as follows Move the operating mode selector to 24 hour mode with three heating periods enabling ...

Page 18: ...n and close the cover 3 3 7 Continuous economy temperature The controller can be assigned to continuous economy temperature Proceed as follows Move the operating mode selector to Economy temperature This ensures continuous heating to the economy temperature The display shows Select Economy temperature and press to enter the re quired value Auto Run Move the setting slider back to this position and...

Page 19: ...mber of remaining days e g 14 in the holiday period as follows 1 2 3 4 5 6 7 0 6 12 18 24 2276Z15 To make settings proceed as follows Move the setting slider to the holiday symbol Day 1 6 1 5 7 7 Press this button to set the start of the holiday period max 6 days in advance 1 Monday 7 Sunday Press the arrow buttons to enter the duration of the holiday period 1 99 days Auto Run Move the setting sli...

Page 20: ...C 21 C 16 C T2 7 00 7 00 6 00 6 00 PASS 23 00 23 00 PASS 17 00 22 00 8 00 PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS 8 00 11 00 13 00 17 00 22 00 PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS 19 C 19 C 19 C 19 C 20 C 20 C 21 C 21 C 16 C 16 C 16 C 16 C 16 C PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS PASS If the cooling function is activated DIP switch is set to COOLING the default...

Page 21: ... reset button must be pressed as a confirmation Otherwise the previous settings are still active 4 1 1 Optimum start control Optimization brings forward the switch on point P 1 such that the selected setpoint will be reached at the desired time The setting depends on the type of control system in use that is on heat transmission piping system radiators building dynamics building mass insulation an...

Page 22: ... Limitation of setpoint When using minimum limitation of setpoint to 16 C undesired heat transfer to neigh bouring flats is prevented in buildings that have several heating zones The function can be selected with DIP switch 2 4 2 2 Cooling function DIP switch 2 is used for switching over to cooling mode when used in cooling applica tions The display shows COOLING after confirmation with the reset ...

Page 23: ... construction type of radiators size of rooms etc After a certain learning period the controller optimizes its parame ters and then operates in the mode it has learned In exceptional cases where the self learning mode may not be adequate it is possible to choose PID 12 PID 6 or 2 Pt mode Mode with a switching cycle of 12 min for normal or slow controlled systems e g mas sive building structures la...

Page 24: ...UN The relay and thus the regulating unit must respond after no more than one minute If this is not the case Check regulating unit and wiring Room temperature may be higher than 29 C or lower than 3 C Reset setpoint temperature T3 to its previous level 4 5 Calibration of sensor If the displayed room temperature does not agree with the measured temperature the temperature detector can be recalibrat...

Page 25: ... reset safety limit thermostat M1 Circulating pump N1 REA22 room tempera ture controller Y2 Solenoid valve 5 2 Atmospheric gas burner T F1 F2 N1 M1 Y2 2276S02 T T F1 Thermal reset limit thermostat F2 Manual reset safety limit thermostat M1 Circulating pump N1 REA22 room tempera ture controller Y2 Solenoid valve 5 3 Zone valve N1 Y4 2276S03 N1 Y3 T T N1 REA22 room tempera ture controller Y3 Motoriz...

Page 26: ...ns Landis Stefa Division 5 4 Circulating pump with pre control through manual mixing valve T N1 Y1 2276S04 M1 M1 Circulating pump N1 REA22 room tempera ture controller Y1 Manually operated three port valve 5 5 Refrigeration unit T N1 2276S05 E1 E1 Refrigeration unit N1 REA22 room tempera ture controller ...

Page 27: ...Siemens Building Technologies Basic Documentation REA22 Issue 2 0 CE1P2276E 31 03 1999 Landis Stefa Division Dimensions 27 30 6 Dimensions 41 2276M01 104 135 56 56 60 83 5 2276M02 Subject to alteration ...

Page 28: ...8 kΩ at 25 C Measuring range 0 40 C Time constant max 2 min Setpoint setting range Normal temperature 3 29 C Economy temperature 3 29 C Setpoint for frost protection Adjustable 3 5 10 C Factory setting 5 C Resolution of settings and display Setpoints 0 2 C Switching times 10 min Measurement of actual value 0 1 C Display of actual value 0 2 C Time display 1 min Safety class to EN 60730 1 II Degree ...

Page 29: ... Brief description 5 C Calibration 24 Connection diagram 10 Continuous mode Economy temperature 18 Normal temperature 18 Standby with frost protection 18 Control 2 Pt mode 23 PID 12 mode 23 PID 6 mode 23 Self learning mode 23 Cooling function 22 D Default values 20 Dimensions 27 DIP switch 1 21 DIP switch 2 22 DIP switch 3 23 Display 11 E Electrical installations 10 Engineering 8 F Features 5 Firs...

Page 30: ... 22 M Mounting 9 O Operating elements 11 Optimum start control 21 P Periodic pump run 22 PID 12 mode 23 PID 6 mode 23 Product liability 7 Pump kick 22 R Regulations for installation 10 Reset 20 S Select operating modes 14 Self learning mode 23 Settings Time of day 14 Weekday 14 Startup 12 T Target market 6 Types of buildings 6 Types of systems 6 ...

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