Controller description
The
EU-21
regulator is intended for controlling CH pump.
Controller functions:
- controlling CH pump
- thermostat function
- anti-stop function
- anti-freeze function
Controller equipment:
- CH temperature sensor
- LED display
1.
Controller display - during standard operation current temperature is
displayed.
2.
PLUS button
3.
MINUS button
4.
Power switch
5.
MENU button - enter the controller menu, confirm the settings
6.
Control light indicating manual mode
7.
Control light indicating pump operation
8.
Control light indicating power supply
Principle of operation
EU-21
is intended for controlling the central heating pump (CH). The
main task of the controller is to activate the pump when the pre-set
temperature value is exceeded and deactivate it when the CH boiler cools
down (due to damping). Such characteristics prevent unnecessary pump
operation, which saves electricity (up to 60% depending on the CH boiler
use) and extends the life of the pump. It also enhances its reliability and
reduces the maintenance costs.
EU-21
controller offers anti-stop function which prevents CH pump
stagnation. The pump is activated every 10 days for 1 minute.
Additionally, every hour the time data is saved in non-volatile memory
(EEPROM), which ensures that the timing is continued even in the event
of voltage failure.
Apart from that, the controller offers anti-freeze option protecting against
water freezing. When the sensor temperature drops below 5˚C, the CH
pump is enabled permanently.
Both functions are active by default but it is possible do deactivate them
in the service menu
Controller EU-21 performs thermostat funktions. Detailed
parameter specification can be found in EU-21 manual, on the
TECH website www.techsterowniki.pl.
How to use the controller
Use PLUS and MINUS buttons to adjust the pre-set temperature within the
range of 5 to 98°C. The change is saved after a few seconds (flashing)
and current sensor temperature appears.
Press MENU to access two functions:
•
Manual mode
Once manual mode has been selected by pressing MENU
button, the corresponding control light goes on. In this
mode, use PLUS button to enable the pump and MINUS
button to disable it. This function enables the user to check
if the pump works properly.
•
Hysteresis
This option is used to set the hysteresis of the pump
operation. It is the difference between entering
operation mode (activation threshold) and the temperature
of returning to pause mode.
Example:
the pre-set temperature is 60˚C, the hysteresis is 3˚C - entering
operation mode takes place at the temperature of 60˚C, return to pause
mode takes place when the temperature drops to 57˚C.
How to install
The sensor should be installed on the CH boiler output with the use of a
cable tie and protected from the influence of external factors with the use
of an insulating tape (it cannot be dipped in any liquid).
The pump power cord should be connected in the following way: blue and
brown:230V, yellow-green (protective) should be earthed.
The distance between the mounting holes is 110mm.
EU Declaration of conformity
Hereby, we declare under our sole responsibility that
EU-21
manufactured by TECH, headquartered in Wieprz Biała Droga 31,
34-122 Wieprz, is compliant with:
•
Directive 2014/35/EU of the European Parliament and of
the Council of February 26, 2014 on the harmonisation of the laws
of Member States relating to
the making available on the market
of electrical equipment designed for use within certain voltage
limits (EU Journal of Laws L 96, of 29.03.2014, p. 357),
•
Directive 2014/30/EU of the European Parliament and of
the Council of February 26, 2014 on the harmonisation of the laws of
Member States relating to electromagnetic compatibility (EU Journal of
Laws L 96 of 29.03.2014, p.79),
•
Directive 2009/125/EC establishing a framework for the
setting of ecodesign requirements for energy-related products,
•
the regulation by the Ministry of Economy of May 8, 2013
concerning the essential requirements as regards the restriction of
the use of certain hazardous substances in electrical and electronic
equipment, implementing provisions of RoHS directive 2011/65/EU.
For compliance assessment, harmonized standards were used:
PN-EN 60730-2-9:2011, PN-EN 60730-1:2016-10.
Wieprz, 06.05.2019
1
4
5
6
7
8
3
2
NO.
SPECIFIKATION
1.
Power supply
230V ±10% /50Hz
2.
Maximum power consumption
2W
3.
Ambient temperature
5÷50
4.
Pump max. output load
0,5A
5.
Temperature
measurement
accuracy
1°C
6.
Sensor thermal resistance
-30÷99°C
7.
Fuse
1,6A
Service settings
In order to access the service settings, put the power switch in 0 position,
press MENU and holding it all the time move the switch to 1. Release
MENU button after a few seconds (b1 appears on the screen).
Use PLUS and MINUS buttons to move to the next functions:
•
Pump/thermostat
The regulator may serve as a pump or a thermostat.
Use MENU button to select the operation mode:
0
– as a pump (the controlled device is enabled at the pre-set
temperature and it is disabled when the temperature drops to
the pre-set temperature minus hysteresis)
1
– as a thermostat (the controlled device operates from the controller
activation until reaching the pre-set temperature; it is enabled again
when the temperature drops below the pre-set value by the hysteresis).
•
Anti-freeze
This function is used to enable/disable
the anti-freeze function:
0
– OFF,
1
– ON
•
Anti-stop
This function is used to enable/disable
the anti-stop function:
0
– OFF,
1
– ON
•
Minimum pump activation threshold
This option is available only if thermostat function
has been selected. The settings range is 0÷70°C
Notifications
bL +E5
(alternately) - sensor failure
A5
-anti-stop active
A2
- anti-freeze active
Technical data
b1
b2
b3
b4
o
1
o
2
