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HERZ ETKF+
Energy saving thermostatic head with receiver and accessories
Dimension in mm
Mounting dimension (W x H x D): 60 x 65 x 100
Version
1 8251 01
energy saving thermostatic head ETKF+ -
The energy saving thermostatic head ETKF+ is built with programmable
temperature, time control and wireless receiver.
Technical data
Setting range:
Differntial:
Batteries:
Receiver frequency:
Surrent consumption:
Ambient temperature:
Linear stroke:
Thread connection:
Field of application
The energy saving thermostatic head ETKF+ can be installed on all HERZ-TRVs with M28 x 1,5.
With adapters (available sepeately), it is possible to mount on the ETKF+ on valves from other
manufactures.
Function
Energy saving thermostatic head ETKF+ is use to control each radiator and can be also used to
control the room temperature. When airing the room, ETKF+ regulates the temperature
5 °C to 30 °C
0,5 K
2 X 1,5 V AA, LR6 battery included, typical life approx. 2 years
868,3 MHz
Max. 100 mA
5 °C to 50 °C
4,2 mm
M28 x 1,5
HERZ ETKF+
Data sheet for 8251, Issue 0816
Page 1
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Summary of Contents for Herz 8251
- Page 1 Thread connection: M28 x 1,5 Field of application The energy saving thermostatic head ETKF+ can be installed on all HERZ-TRVs with M28 x 1,5. With adapters (available sepeately), it is possible to mount on the ETKF+ on valves from other manufactures.
- Page 2 The ETKF+ is easy to install and can be done without draining heating water or intervening in the heating system. No special tools are required, nor does the heating have to be switched off. The brass union nut M28 x 1,5 attached to the ETKF+ can be used with HERZ thermostatic valves and Page 2...
- Page 3 In order to be able to use the energy saving thermostatic head ETKF+ in your installation, you must teach it in to the other devices first. Further information about “Teaching-In” the ETKF+ can be found in the detailed operating manual available online for download on the HERZ homepage. Restore factory settings The factory settings of the energy saving thermostatic head ETKF+ can be restored manually.
- Page 4 HERZ ETKF+ antenna symbol ETKF+ components lost the batteries of taught-in ETKF+ components. Quickly flashing “Duty cycle” limit reached The device can resume radio Antenna symbol communication after a waiting time of approx. one hour Routine descaling Automatic function is active...
- Page 5 HERZ ETKF+ Window Sensor+ (1 8251 02) Mounting dimension in mm (W x H x D): electronic unit: 18,5 x 103,5 x 24,5 magnet: 12 x 48 x 12 Intended use The window sensor+ is used to detect when a window is opened. If the window contact is taught-in to a energy saving thermostatic head ETKF+, these devices will automatically reduce the temperature in the room during ventilation.
- Page 6 HERZ ETKF+ • The magnet (B) can be mounted on other side of the electronic unit (A). • The window sensor+ can be attached either vertically or horizontally and can be positioned on the side or at the top/ bottom of the window.
- Page 7 HERZ ETKF+ caps are supplied with the device. Inserting (replacing) batteries The window sensor+ is operated with two LR03/ micro/ AAA batteries. • Remove the cap of the electronic unit (A) by pulling it forward and off the device (1). To release the cap, squeeze it gently from above and below with your thumb and index finger (2).
- Page 8 HERZ ETKF+ Flashing sequences The LED’s (D) flashing sequences have different meanings: Flashing sequence Meaning 1x flash Window open/ closed, radio command sent successfully 2x flashes “Duty cycle” limit reached. The device will communicate again after max. one hour. 3x flashes...
- Page 9 HERZ ETKF+ Device Overview: A: Mounting plate B: Clip on frame C: Electronic unit (D) Automatic mode (Auto), manual modus (Manu), holiday function ( ), boost-function ( open-window-function ( ), operating lock ( (E) Weekday, empty battery symbol ( ), radio synchronicity (...
- Page 10 HERZ ETKF+ Mounted condition: Once mounted, the wall Thermostat+ can easily be pulled of the mounting plate and out of the frame. • Pull sideways at the frame to remove the electronic unit of the wall together with the frame.
- Page 11 HERZ ETKF+ Screw mounting: • Choose a site for installation. Make sure that no electricity or similar lines run in the wall at this location. • Position the mounting plate on the desired site on the wall. Make sure that the arrow on the mounting plate is pointing upwards.
- Page 12 In order to be able to use the wall thermostat+ in your installation, you must teach it in to the other devices first. Further information about “Teaching-In” the wall thermostat+ can be found in the detailed operating manual available online for download on www.herz.eu. Configuration of the System: If you use the wall thermostat+ in the Room solution, you can individually change all settings of your system (e.g.
- Page 13 HERZ ETKF+ Flashing Sequences and Maintenance: Errorcode Problem Solution Batterysymbol( Battery voltage to low Replace battery Temperature sensor defect Replace device Check the power supply and Slowly flashing antenna Connection on to taught-in the batteries of taught-in components lost symbol ( )
- Page 14 All specifications and statements within this document are according to information available at the time of printing and meant for informational purpose only. Herz Armaturen reserves the right to modify and change products as well as its technical specifications and/or it functioning according to technological progress and requirements.
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