Eberle easy 3 st Electronic Clock Thermostat
Warning!
The device may only be opened and installed according to the circuit diagram on the device or these instructions by a qualified electrician. The existing safety regulations must be observed. Appropriate installation measures must be taken to achieve the requirements of protection class II.
This independently mountable electronic device is designed for controlling the temperature in dry and enclosed rooms only under normal conditions. The device confirms EN 60730, it works according to operating principle 1C.
Applications
The easy 3p electronic clock thermostat is designed for room temperature control in conjunction with:
- heating systems, e.g. hot-water heaters, convector heaters or floor heating
- electric convector heaters, ceiling and storage heating
- night-storage heaters
- circulation pumps
- burners and boilers
- heat pumps, etc.
- Airconditioning applications (cooling only)
other temperature controllers can be controlled via time switch output.
Features
- very simple operation
- comfort and setback temperature adjustable
- 3 operating modes for:
- permanent comfort temperature (5…30°C)
- permanent setback temperature (5…30°C)
- clock mode (automatic)
- Indicator lamps for:
- heat demand
- setback mode
- time switch output (for temperature setback of other temperature controllers)
- available with daily or weekly timer
- output signal PWM or ON/OFF regulation (adjustable via jumper)
- relay output, 1 x changeover contact
- hinged cover
- new design
Function description
The clock thermostat is designed to control the room temperature. In the automatic mode, a changeover is effected between comfort and setback mode by the built-in timer. In setback mode, the green indicator lamp lights up. If the room temperature drops below the set value, heating will start, the red indicator lamp will light up.
Indicator lamps
Red indicates when the controller demands heat, Green indicates when setback mode is activated. Red flashing for failure.
The operating voltage is to be switched OFF and ON again.
Temperature setback of other temperature controllers
Temperature setback inputs of other temperature controllers can be connected to time switch output (terminal 28).
They are then controlled by the time switch.
The position of the mode selector switch (see 6.6) influences this output accordingly.
Controller heat demand at PWM
If the room temperature drops below the set value, the heating mode will start. The controller output is in the form of pulses of varying length (PWM). The length of the pulses depends on the difference between set and the actual room temperature.
The sum of pulse and pause times can be selected with J4 (between 10 or 25 min.).
If there are large temperature differences, the controller will switch ON or OFF permanently, e.g. when changing over to temperature setback mode. Use PWM only at current ≤10 A.
For inert applications (e.g. burners) we recommend a long cycle time.
For quick applications (e.g. electric direct heaters) we recommend a short cycle time.
Cycle time setting
For inert applications (e.g. burners) we recommend a long cycle time.
For quick applications (e.g. electric direct heaters) we recommend a short cycle time.
| Plug-in jumper J4
(right side of board) |
Time |
| Double-pole jumper connection | 25 min
(as-delivered condition) |
| Single-pole jumper connection | 10 min |
Heat demand of the controller at ON/OFF regulation
When the room temperature drops below set temperature the output will be switched on, whereas it will be switched off, when set value is exceeded.
| Plug-in jumper J3
(right side of board) |
Regulation |
| Double-pole jumper connection | ON/OFF |
| Single-pole jumper connection | PWM
(as delivered condition) |
Installation
The controller should be arranged in a place within the room which:
- is easily accessible for operation
- is free from curtains, cupboards, shelves, etc.
- enables free air circulation
- Is free from direct sun radiation
- Is free from draughts (e.g. opening of windows and doors)
- Is not affected directly by the source of heat
- is not located on an external wall
- is located approx. 1,5 m above floor level
Mounting directly on the conduit box or with an adapter frame ARA is easy.
Electric connection
Warning! Disconnect the electric circuit from the supply
Proceed as follows:
- pull off the temperature setting knob
- push the retaining hook outwards using a screwdriver
- remove housing cover
- make a connection in compliance with the wiring diagram (see housing cover).
- watch notes
Technical data
- Temperature setting range:
- comfort temperature 5…30°C
- setback temperature 5…30°C
- Regulation proportional controller (due to PWM quasi-continuous, see Fig. 1)
- Cycle period adjustable 10 or 25 min. (sum of PWM ON and OFF times)
- Proportional band 1.5 K
- Hysteresis at ~0,5 K ≤10 A (see fig. 2)
2,5 K at 16 A - ON/OFF regulation adjustable via jumper
- Output relay, 1 volt-free*changeover contact
- Switching current Heating 10mA…16 A cos ϕ = 1
- max. 4 A cos ϕ = 0,6
- Cooling 10mA …10A cos ϕ = 1
- max 1,5 A cos ϕ = 0,6
- Switching voltage 24…250 V AC
- Time switch output max. 20 temperature setback inputs,
230 V: max. 50 mA,
24 V: max. 150mA - Mode selector switch comfort / automatic / setback
- Indicator lamp: red controller demands heat green setback mode
- Temperature sensor internal
- Range limitation inside setting knob
- Clock: accuracy <10 min./year switching the time setting every 15 min. with a daily timer every hour with a weekly timer
- power reserve approx. 100 h
- Protection class of housing IP 30 / insulated
- Degree of protection II (see Warning)
- Ambient temperature 0…40°C, without condensation
- Storage temperature –25…65°C
- Pollution degree 2
- Bemessungsstossspannung
- Rated impulse voltage 4 kV
- Ball pressure test
- temperature 75 ± 2 °C
- Voltage and Current for purposes of interference measurements 230 V, 0,1 A
- Dimensions 160 x 80 x 36 mm
- Weight approx. 220 g
- Energy class IV = 2 %
(acc. EU 811/2013, 812/2013, 813/2013, 814/2013)
* The volt-free contact of this mains-operated unit does not ensure the requirement for the use of safety extra-low voltage (SELV).
For units with 230 V supply voltage
- Type easy 3pt with a daily timer
easy 3pw with weekly timer - Article-Nr. easy 3pt 517 2703 51 100
easy 3pw 517 2704 51 100 - Operating voltage 195…253 V AC 50/60 Hz
- Power consumption <1.5 W
For units with 24 V supply voltage
- Type easy 3pt/24 with daily timer
easy 3pw/24 with weekly timer - Article-No. easy 3pt/24 517 2703 21 100
easy 3pw/24 517 2704 21 100 - Operating voltage 20…30 V AC 50/60 Hz
- Power consumption < 1.5 W
For units with low voltage output
- Type easy 3pt with a daily timer
easy 3pw with weekly timer - Article No. easy 3pt 517 2713 51100
easy 3 pw 517 2714 51100 - Operating voltage 195…253 V AC 50/60 Hz
- Switching current >1V/>1mA…max 250 V/AC 10 A
- Power consumption <1.5W
Wiring diagram
Symbol explanation
Heating
Cooling- TA Temperature set-back for other controllers
Note
For heating applications
- connect n/c actuators to terminal 2.
- connect n/o actuators to terminal 3.
For cooling applications
- connect n/c actuators to terminal 3
- connect n/o actuators to terminal 2
- To use the red lamp as an indicator for “Cooling ON”, connect n/o actuators to terminal 2
Operation
Temperature setting
- Comfort temperature (daytime temperature) is set by means of an externally visible setting knob (1)
- The setback temperature (night temperature) is set by means of the adjustment knob (2) beneath the cover.
Time setting - by putting one finger on the dial (3) and turning in any direction, you can set the time.
- Arrow (4) points to the selected time.
Switching time setting - Bring movable tappets (5) into the required position using a pointed object.
Outer ring = comfort temperature
Inner ring = setback temperature - Mode selector switch (6) – internally
Comfort temperature, permanent
2 Automatic mode, time-controlled changeover between comfort and setback temperature
The setback temperature is permanent.
This product should not be disposed of with household waste.
Please recycle the products where facilities for electronic waste exist. Check with your local authorities for recycling advice.
Reference
Download Manual:
eberle easy 3 st Electronic Clock Thermostat Installational Instruction
Eberle easy 3 st Electronic Clock Thermostat Installational Instruction