Tech Controllers EU-i-3 User Manual page 14

* select in case of circuit operation without a mixing valve
** this option appears when the floor valve type has been selected
1. Enter the fitter's menu
2. Select the number of valves needed
3. Configure one of then selecting 'Valve 1' option
4. Select the type of valve: CH valve, Floor valve, Return protection, Swimming pool, Ventilation. The
principle of operation in the case of Swimming pool and Ventilation valves is the same as in the case of CH
valve. What changes is the graphics on the installation screen.
•
CO – select if you want to control the temperature of the CH circuit with the use of a valve sensor. The
valve sensor should be installed downstream of the mixing valve in the supply pipe.
•
FLOOR – select if you want to control the temperature of the underfloor heating circuit. It protects the
underfloor heating system against dangerous temperature. If the user selects CH as the valve type and
connects it to the underfloor heating system, the fragile floor installation may be damaged.
•
RETURN PROTECTION – select if you want to control the return temperature of the heating system with
the use of a return sensor. With this type of valve, only the return sensor and the CH boiler sensor are
active; the valve sensor is not connected to the controller. In this configuration, the valve protects the
CH boiler return against low temperature, and if the CH boiler protection function is selected, it also
protects the CH boiler against overheating. If the valve is closed (0% opening), the water flows only
through the short circuit, while full valve opening (100%) means that the short circuit is closed and water
flows through the entire heating system.
WARNING
If CH boiler protection is disabled, the CH temperature does not influence the valve opening. In extreme
cases, CH boiler overheating is possible; therefore, it is recommended to configure CH boiler protection
settings.
Floor type
Floor heating - summer
Decide if the valve should work in
summer mode.
WARNING
If the selected valve type is different from the valve used in the system, it may lead to the whole heating system damage.
NOTE
The controller may support 3 built-in valves and two additional valves.
Floor circuit settings
Max, floor temperature
The temperature above which the valve
will close and the circulating pump will be
disabled.
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