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Ground VAV Fan Powered Terminal
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Ground VAV Fan Powered Terminal

FH-VAV-GFP ground series fans terminal is a set of removable underfloor air supply device. The outlet and secondary air return consist of two grills with inclination of 0°, 15° or 30°.

FH-VAV-GFP ground series fans terminal is a set of removable underfloor air supply device. The outlet and secondary air return consist of two grills with inclination of 0°, 15° or 30°.
The first air is supplied via underfloor air supply system, pressure independent control. The fan runs in fixed air volume to induce some inner secondary airflow . 

When the inner temperature goes higher, the controller will release the signal to increase the first air volume.
When the first air increases , the secondary air will decrease accordingly. And the fan will run in fixed air volume.
When inner temperature exceeds the set point, the first air will keep at the max volume. 

Feature description

1.FH-VAV-GFP ground series fans terminal is a set of removable underfloor air supply device. The outlet and secondary air return consist of two grills with inclination of 0°, 15° or 30°.

2.The first air is supplied via underfloor air supply system, pressure independent control. The fan runs in fixed air volume to induce some inner secondary airflow .

3.Using High precision flow sensor with FH-001Patent, it can increase the flow gain coefficient to 1.2-1.5 times and accurately measure the air speed of 1 m/s or above.

4.Using centrifugal machine with low noise, it has 3 speed adjustments.

5.5OOW and 1000W type heaters are available for options.

6.With DOC controller, it can be connected with BA system via standard Lonworks, BACnet or other communication protocols.

7.There are scale, LED and digital display panels for users' options.

8.Basic technical assurance :
1 ) The air speed in distance of 0.3m from the air outlet doesn't exceed O.5m/s.
2 ) The inner temperature gradient doesn't exceed 1°C/m.
3 ) The inner noise level is controlled under dB(A)40.
4 ) Ensure to meet new air requirement through setting the minimal air volume.


Controlling Scheme Decription

1.Ground series fan powered terminal is connected with the central air handling unit (AHU). We suggest to interlock the terminal with AHU directly through an air flow switch And the switch can detect the pressure of the first air inlet.

2.When the inner temperature goes higher, the controller will release the signal to increase the first air volume.

When the first air increases , the secondary air will decrease accordingly. And the fan will run in fixed air volume.

When inner temperature exceeds the set point, the first air will keep at the max volume.

3.When inner temperature drops, the controller will control to decrease the first air volume.

4.When the inner temperature reaches the set point and the first air reaches its minimum, the fan will begin for the secondary air supply.

5.When it decreases constantly in inner temperature, it can start the heating coil in grading.

Ground VAV Fan Powered Terminal-1


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