Manufacturer of the cable operated damper is Young Regulators (http://www.youngregulator.com)
Detail can be viewed at:
http://www.youngregulator.com/pdf%20files/submittals/submittal820-1200.pdf
I believe a wall plate and knob is also available
Commonly, here in Canada, gas fired or electric heat make-up-air is delivered down a shaft to each floor normally discharged in the elevator lobby. Fire and Fire/smoke dampers may be a requirement behing the mua grille, depending on your local code.
We frequently use "slab duct" to...
I would recommend the installation of remote damper operators. They are cable operated and connected to a wall knob which can remotely open and close the dampers from up to 25' away...if you need more let me know
Engineers I am familiar with always state "or approved equal". Often Consultants give out "Approved equal" status based on the manufacturers name. It becomes my job to ensure the Consultants specification (which I primarily wrote) is not compromised with lesser quality or...
The diffuser will induce room air into the airsream. This may be your problem depending on how far your measurement is from the actual supply air stream.
Like imok2 said your supply air volume may also be too low in the heating mode
TSI, a manufacturer of fume hood controls use this principle to maintain equal face velocity across an adjustable sash. The static pressure within the hood is always monitored and controls a damper to maintain setpoint.
Ckeck out the following pdf, it may be helpful...
I am independently contracted by a supplier of HVAC products to get their products specified by the local engineering community. I am contracted to provide full selection services to local Engineering companies, upon demand, for air handling related products and equipment (15800). The selections...
Is there such a device where sound can be easily generated by entering given SPL in each 3rd octave band (31hz to 8000hz), thereby recreating the same sound profile as equipment manufacturers published test data
