Ground Single Cold Type Variable Air Volume Terminal
Ground Single Cold Type Variable Air Volume Terminal
Ground Single Cold Type Variable Air Volume Terminal, (here below we call it VAV-GSC) is newly designed for raised floor air supply system. It absorbed the good experience in construction practices and products applications. With advantages of traditional variable air volume terminals, it can better cater to growing needs for ground air supply system and reflect its technological superiorities, such as best ventilation effects, interior air quantity improvement, energy saving and thermal comfort ,etc. In structure, it adopts ultra-thin design installed inside the floor to accord with different floor height requirements. And it is widely used in both inside and outside of any ground air supply systems.
Details
Description
FH-VAV-GFP ground series fans terminal is a set of removeable underfloor air supply device. The outlet and secondary air return consist of two grills with inclination of 0°、15°、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 secendary airflow.
Using high precision flow sensor with FH-001 Patent, it can increase the flow gain coefficient to 1.2~1.5 times and accurately measure the air speed of 1m/s or above.
Using centrifugal machine with low noise, it has 3 speed adjustments
500W and 1000W type heaters are available for options
With DDC controller, it can be connected with BA system via standard Lonworks, BACnet or other communication protocols.
There are scale, LED and digital display panels for users' options
Controlling Scheme Description
1. Ground series fan powered terminal is connected with the conteral air handing unit(AHU). We suggest to interlock the terminal with AHU directly throgh an air flow switch. And the switch can detect the pressure of the first air inlet.
2. When the inne 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 voleme.
4. When the inner temperature reached the ste point and the first air reaches its minimum, the fan will begin for the secondary air supply.
5. When it decrease constantly in inner temperature, it can start the heating coil in grading.
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