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CE1B3176.3en / 2012-08-29 

Subject to change 

Siemens Building Technologies  

Button lock  

   
 

 

 

 

Press operating mode button   for 3 seconds to lock or unlock the buttons if 
manual button lock is configured (parameter P14 = 2).   
The thermostat automatically locks the buttons 30 seconds after the last 
adjustment if "Auto lock" is configured (P14 = 1).  

 

The key symbol 

 indicates locked buttons.  

Reminder to clean filters

 

External faults

 

Commissioning

 (by qualified HVAC installer) 

 

To adapt the thermostat to your system and optimize the control performance, a number 
of control parameters can be adjusted. This can also be made during operation without 
opening the thermostat. 

Control sequence 

Recalibrating the sensor 

Note: Economy mode 

 

 

 

The Economy setpoints are factory-set to 15 °C for heating and 30 °C for 
cooling. Use parameters P11 and P12 to adjust the values. 

Important

:

 

You can set these setpoints to 

OFF

; the thermostat then is 

inactive,

 

i.e. no protective heating or cooling function.

 

 Risk of frost!

 

Control parameters 

Proceed as follows to change the most important control parameters: 
(Your HVAC installer can set additional parameters) 

 

 

+ / - 

 

+ / - 

 

 

 

+ / - 

 

+ / - 

1.

 

Set the thermostat to Protection   

2.

 

Press 

-

 and 

+

 simultaneously for a minimum of 4 seconds.  

Release them and, within 2 seconds, press 

+

 again until "P01" is displayed. 

3.

 

Repeatedly press the 

+

 or 

 button to select the required parameter. 

P01

P02

P08

P13

+

-

+

-

-

+

3057z03

P14

-

+

-

P12

+

-

 

4.

 

Press 

+

 and 

 simultaneously, the current value of the selected parameter starts to flash, allowing you to change 

the value by repeatedly pressing 

+

 or 

5.

 

The next parameter is displayed when you press 

+

 and 

 again simultaneously. 

6.

 

Repeat steps 3 to 5 to display and change additional parameters. 

7.

 

15 seconds after the last display or setting, all changes are saved and the thermostat will leave parameter entry 
mode. 

 

Para-

meter 

Description 

Factory setting 

Setting range  

 

P01 Control 

sequence 

 

2-pipe

:  [0…3] 

1 (Cooling only)  
 

4-pipe:  

[2…4] 

4 (Heating & Cooling) 

0 = Heating only 

1 = Cooling only 

2 = Manual H or C 

3 = Auto Changeover 

4 = Heating & cooling 

 

P02 

Mode selection by user via operating mode button 

1 (Protection, 

Comfort) 

1 = Protection, Comfort, 

2 = Protection, Comfort,  

 Economy 

 

P04 

Selection of °C or °F 

0 (°C) 

0 = °C  

1 = °F 

 

P05 Sensor 

calibration 

0.0 K 

– 3 ... +3 K 

 

P06 

Standard temperature display 

0 (Room temp.) 

0 = Room temperature 

1 = Setpoint 

 

P07 

Additional user information 

0 (no display) 

0 = no display 

1 = Temp in °C / °F 

 

P08 

Comfort basic setpoint 

21 °C 

5 ... 40 °C 

 

P09 

Minimum setpoint limitation in Comfort 

(Wmin

Comf

) 5 °C 

5 ... 40 °C 

 

P10 

Maximum setpoint limitation in Comfort 

(Wmax

Comf

) 35 °C 

5 ... 40 °C 

 

P11 

Setpoint of heating in Economy mode  

(Wheat

Eco

) 15 °C 

OFF, 5 °C…Wcool

Eco

 

 

P12 

Setpoint of cooling in Economy mode 

(Wcool

Eco

) 30 °C 

OFF, Wheat

Eco

…40°C  

P13 

Electric heater in cooling mode 

ON 

OFF = Disabled  

ON =  Enabled 

 

P14 

Button lock 

(Press operating mode button   for 3 seconds to lock or 
unlock the buttons)

 

0 (Disabled) 

0 = Disabled 

1 = Auto lock 

2 = Manual lock 

 

 

The control parameters displayed depend on the DIP switch settings made

 

 

 Please record all changes you make!  

(All temperature settings can be made in increments of 0.5 K) 

    

FIL 

This message reminds you to clean the filter on your HVAC equipment.   
It will appear after 

 __________ "fan operating hours" and disappear when 

the thermostat is set to Protection ( ).   

This reminder must be configured by your HVAC installer.

 

 

    

AL1

 

    

AL2 

This alarm message tells you an external alarm has occurred: 

    

AL1 :

 ______________________    

    

AL2 :

 ______________________ 

The alarms are configured by your HVAC installer

 

 

The thermostat can be used in systems either for 

heating only

 or 

cooling 

only

manually selection of heating or cooling

, or 

automatic heating / cooling 

changeover

. Depending on the selected application, the relevant modes are 

available and can be adjusted by commissioning parameter P01 if needed. 
 

 

The factory setting for 2-pipe application is "C

ooling only"

, and for 4 pipe 

application "Heating and Cooling" 

 

If the room temperature displayed by the thermostat does not agree with the 
temperature effectively measured (after min 1 hour of operation), the tem-
perature sensor can be recalibrated. With parameter P05 the temperature can 
be adjusted by + or – 0.5 °C up to a maximum of + / - 3 °C. 

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