Hi-Velocity Tubing Runs

How to get it where you need it! System Installation copyright Mestek, Inc. 2006

Restrictors and Balancing: Each 2”run will provide between btu at a run lengths of 10’ – 30’ 3 restrictor sizes 15%, 30% and 50% Living room = 3 full runs Family room = 5 full runs How about the Dining room? Needs two outlets but gain is only 2800 btu. Use 2 30% restrictors on both runs. = 2800 btu Runs must total full open for 3642D – 850 CFM to get ESP to 1.2” and 1.5” W.C.

Outlet Location ESP > <

High Static Plenum Short runs Short runs Long runs Will this pull on fitting?

Considerations: Want to keep runs as close as possible to 10 feet in length. full 40 cfm and 2000 btu per outlet makes it much easier to balance….. Generally less $$$ to run supply plenum extra distance than run long 2” runs. Want to “premake” the 2” runs downstairs where it’s nice and cool!!!!

Plenum Connection ESP > <

Plenum Take Offs

Installation Kits

Measure supply tubing length,Cut with hacksaw

Pull back Mylar & insulation copyright Mestek, Inc. 2004

Twist in a kwik connect fitting

Tuck insulation under collar

Wrap connection with UL listed foil tape

Support Takeoff Runs 20 degree down angle minimizes stress Round Duct Round Duct 2” Air Supply Run 2” Air Supply Run

Min. Run Length Air supply runs should be a min. of 6’ prior to sound attenuating tubing.

Minimum Radius Minimum 4” radius New 90° elbow Fits tight corners Runs down 2x4 wall

Quik-Connect

Tubing Takeoff Runs Supply connections should be a minimum 24” from the fan coil, and 18” from plenum tees, elbows and a minimum of 8” from other supply runs Minimum 18” 18” 8” Minimum 24”

Tubing Takeoff Runs Main Trunk/Plenum – Maximize use of the main trunk line in order to minimize the lengths of 2” duct. It will allow for an easier installation and better performing, balanced system if the 2” duct lines are minimized.

2” Supply Tubing 3-ply aluminum Flexible but strong With insulation and vapor barrier R-8, 50’ lengths R-6, 75’ lengths R-4.3, 100’ lengths Reduces waste Speeds installation

New R-8” Supply Tubing Meets new codes where R8 is required in uninsulated space 6-1/2” O.D. uncompressed