Danfoss FEV-Z, AB-QM Data sheet
Data Sheet
FEV-Z Climate Sensors for AB-QM Automatic Flow Limiter
Product
FEV-Z for AB-QM automatic flow limiter - with integrated sensor
The FEV-Z climate sensor is a proportional controller which opens or closes an AB-QM automatic flow limiter valve as a function of the temperature deviation.
The FEV-Z is to be applied in climate systems with i.e. ceiling-, flooror radiator heating.
The FEV-Z climate 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.
Ordering and Specifications |
Type |
Description |
Setting range |
Code no. |
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FEV-Z |
Climate sensor with adapter for AB-QM automatic flow limiter, 8 |
17-27 °C |
013G5458 |
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m capillary tube |
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Application |
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Heating: Floor-, ceiling-, or radiator heating |
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1. FEV-Z
2. AB-QM
3. Heating circuit
1 |
2 |
3 |
Design |
The FEV-Z sensor is equipped with a direct acting |
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valve controller that opens the valve when the |
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temperature drops below the set temperature. |
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If the set temperature is equal to or higher than |
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the room temperature the valve is open. |
FEV-Z has a valve adapter especially designed for use with Danfoss AB-QM automatic flow limiters.
Danfoss Heating Solutions |
VDXFK202 |
© Danfoss |
02/2011 |
1 |
Data Sheet |
FEV-Z Climate Sensors for AB-QM Automatic Flow Limiter |
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1 |
2 |
1. |
Valve adapter (heating) |
4. |
Capillary reel |
2. |
Actuator |
5. |
Remote temperature adjuster |
3. |
Adjustment bellows |
6. |
Bellows |
Temperature Setting |
Comfort temperature ~ 22 °C at Xp = 0 K |
The FEV-Z sensor has been developed for heating |
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regulation of water-based systems. |
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The FEV-Z sensor is based on the self-acting prin- |
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ciple. The liquid-filled sensors control the valves |
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via capillaries and adapters. |
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The scale shows the approximate set-point offset |
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from the comfort temperature which is |
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approximately 22 °C at Xp = 0 K. |
Temperature Control |
Control area of FEK sensor with RA-C valve |
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Through Heating with FEV-Z |
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Xp = 0K |
17 18 19 20 21 22 23 24 25 26 27 |
Xp = 2K |
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15 16 17 18 19 20 21 22 23 24 |
25 |
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When the knob has been set in the middle position the valve will open at temperatures lower than 22 °C.
A setting in the red zone means the valve will open at a higher room temperature.
Heating with FEV-Z sensor
L/H 
1
2 ˚C
A setting in the blue zone means the room |
1. Waterflow, heating |
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temperature will be kept at a value lower then 22 |
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2. Set point on knob |
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°C. |
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2 |
VDXFK202 |
© Danfoss |
02/2011 |
Danfoss Heating Solutions |
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