Danfoss FEV-IF, FEV-FF Data sheet

Data sheet	FEV sensors
	Control of heating circuit

Products

FEV-IF with integrated sensor

FEV-FF with remote sensor

The FEV is a proportional controller which opens or closes the heating valve as a function of the temperature deviation.

FEV-IF

To be applied in systems with i.e. ceiling-, flooror radiator heating. The temperatureadjuster/sensor should be mounted on an internal wall at a height of approximately 1.5 meter in such a way that the room temperature can be measured accurately.

FEV-FF

To be applied in systems with i.e. fancoils or induction units. By placing the remote sensor in the room-air inlet of the unit a smaller response time to temperature changes can be achieved which will result in a more accurate temperature control.

Ordering and	Type	Code no.	Sensor	Capillary tube	Setting range
specifications
	FEV-IF	013G5467	Integrated sensor	5 m	17-27 °C
	FEV-FF	013G5466	Remote sensor	2 + 2 m

Application

Heating: Floor-, ceiling-, or radiator heating

Heating circuit

FEV-IF

RA-C

RA-N/G

Heating: fancoils/induction units

Heating circuit

FEV-FF

RA-C

RA-N/G

DKCD

VD.33.R1.02 © Danfoss 01/2000

1

Data sheet	FEV sensors

FEV sensor design

Remote temperature adjuster

Remote sensor (FEV-FF)

	Valve adapter	Actuator
	(heating)

FEV sensors can be applied in combination with RA-N RA-G or RA-C valves. The FEV sensors are equipped with a direct acting valve-controller that opens the valve when the

temperature drops below the set temperature. If the set temperature is equal to or higher than the room temperature the valve is closed.

Temperature setting

Comfort temperature ~ 22°C at Xp = 0 K(°C)

The FEV sensors have been developed for heating via water-based systems.

The FEV sensors are based on the self-acting principle. The liquid-filled sensors control the valves via capillaries and adapters.

The scale shows the approximate set-point offset from the comfort temperature which is approximately 22° C at Xp = 0 K.

2	VD.33.R1.02 © Danfoss 01/2000

DKCD