Operating Instructions
CE1B3171.2en / 2020-02-26 Subject to change Siemens Smart Infrastructure
Temporary timer to extend the Comfort mode
When Economy mode is active, press operating mode button to temporarily
return to Comfort mode. symbol appears. Press operating mode button again
to stop the timer.
You can only extend Comfort mode if parameter P02 = 1.
Duration * : P68 = 0...360 min, factory setting = 0 min.
Operate switching groups
Use buttons I, II, III and IV to operate KNX actuators *.
The following functions are available:
– Switching: Toggle on/off with 1 button or on/off with 2 buttons
(I + II or III+IV). "ON" or "OFF" is displayed.
– Dim lights with 2 buttons (I+II or III+IV):
On/off with a short pulse (<0.5 s); "ON" or "OFF" is displayed.
Brighter/darker with a long pulse (>1 s); "dI" is displayed.
– Operate blinds with 2 buttons (I+II or III+IV):
A long pulse (>1 s) starts the up/down motor; "UP" or "down" is displayed.
A short pulse (<0.5 s) stops the motor or slightly adjusts the position of blinds;
"ON" or "OFF" is displayed.
– Scene I, II, III, or IV: A scene can be used to recall certain states of all actuators
involved, as well as to save new states as needed. E.g. different dimmed lights
and blinds positions you consider adequate for certain events / times.
A short pulse (<0.5 s) starts the scene. "CALL" is displayed.
A long pulse (>3 s) saves the actual position of all actuators involved as
adjusted previously; "SAVE" is displayed.
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 20 seconds after the last
adjustment if "Auto lock" is configured (P14 = 1).
The key symbol indicates locked buttons.
Reminder to clean filters and for external faults
FIL *
AL1 *
AL2 *
This message reminds you to clean your HVAC equipment filters.
It is displayed after !………… “fan operating hours” and disappears when the
thermostat is set to Protection ( ).
These messages inform you on external faults *:
AL1 :! ...……………………… AL2 :! ...………………………………….
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!
Commissioning
You can adjust a number of different control parameters to adapt the thermostat to your system
and optimize control performance. You can do this during operation either via the buttons on the
thermostat or using a commissioning tool.
Control sequence
* Needs to be configured by your HVAC installer
Recalibrating the sensor
Control parameters
Proceed as follows to change the most important control parameters:
(Your HVAC installer can set additional parameters)
+ / – 1. Press the – and + buttons simultaneously at least 4 seconds.
Release, and within 2 seconds, press + again until "P01" is displayed.
2. Repeatedly press the + or – button to select the required parameter.
P01
P02 P08 P14
+- +
- -
+
3171z99
End
-
+
-
P13
+-
3. Press + and – simultaneously. The current value of the selected parameter begins to flash, allowing you to change the
value by repeatedly pressing + or –.
4. The next parameter is displayed when you press + and – again simultaneously.
5. Repeat steps 2 to 4 to display and change additional parameters,.
6. Press + or – until “End” is displayed, and then press + and – simultaneously to save the change and exit parameter entry
mode.
15 minutes after the last display or setting, all changes are saved and the thermostat leaves parameter setting mode.
Para-
meter
Description Factory setting Setting range
Adj
!
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 (Auto **,
Protection)
1 = Auto **, Protection
2 = Auto **, Comfort, Economy, Protection
P04 Selection of °C or °F 0 (°C) 0 = °C
1 = °F
P05 Sensor calibration 0.0 °C – 3 ... +3 °C
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
2 = Outside temperature (via bus)
3 = Time of day (12h, via bus)
4 = Time of day (24h, via bus)
P08 Comfort basic setpoint 21 °C 5 ... 40 °C
P09 Minimum setpoint limitation in Comfort (WminComf) 5 °C 5 ... 40 °C
P10 Maximum setpoint limitation in Comfort (WmaxComf) 35 °C 5 ... 40 °C
P11 Setpoint of heating in Economy (WheatEco) 15 °C OFF, 5 °C…WcoolEco
P12 Setpoint of cooling in Economy (WcoolEco) 30 °C OFF, WheatEco…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
P15 Fan control deadzone in Comfort 0 (fan OFF) 0:= fan OFF
1:= fan speed 1 in H or C mode
2:= fan speed 1 in C mode only
** Without time schedule via KNX, Auto is equal to Comfort.
*** Parameter P13 is only displayed for application "2-pipe with el heater".
All temperature settings in increments of 0.5 °C.
The control parameters displayed depend on the DIP switch settings made
! Please record all changes you make!
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 "Cooling 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 temperature sensor can be recalibrated. With parameter P05 the temperature can be adjusted by
+ or – 0.5 °C up to a maximum of + / - 3 °C.