a damper for every duct! young regulator product line think young!
TRANSCRIPT
BOWDEN CABLE CONTROLLED REMOTE BALANCING
DAMPERSBecause the world above the ceiling
is not a friendly place!
Balancing Dampers
"Volume dampers should not be placed closer than 5 ft. from an air outlet for good design." It goes on to state "Balancing dampers ... should not be placed directly upstream of air devices or open ended ducts in acoustically critical spaces. They should be located 5 to 10 duct diameters from the termination device. The sound approach conditions caused by improperly located control dampers ...can easily increase sound levels by 10 to 20 dB. The further a damper is installed from the air outlet, the lower the resultant sound level..."
ASHRAE Applications Handbook, Chapter 46,
Section 8, Sound and Vibration ControlCopied from the ASHRAE website
270 Bowden Controller
• Rack and Pinion Controller– Rotation (A) turned
into a linear push/pull (B)
– Lengths to 50 ft– Cut to length in the
field– Hardware for Dampers
by Others (B kits)
Front View
Side View
Bowden Concealed Ceiling Terminations
270-275 270-301 270-EZ 270-896Above Drop Die Cast Cover with threaded “C” Bracket with Ceiling Ceiling Cup Ceiling Bracket Ceiling Plug
Bowden Controls
270-301 Where it all Started
• Rack and Pinion with a Ceiling cup
• Controlling a standard 5020CC or 820 Rectangular
5020CC
301 Ceiling Cup
030-12 Adjustment Wrench
Bowden Controls
“B” Kits
• Hardware for Dampers by others– Specify shaft Diameter
• Order with Ceiling Controller– Ex. 270-275B