Hi-Velocity Tubing Runs

Hi-Velocity Tubing Runs

How to get it where

you need it!

How to get it where

you need it!

System InstallationSystem InstallationSystem InstallationSystem Installation

copyright Mestek, Inc. 2006

• Restrictors and Balancing:

• Each 2”run will provide between 1700 - 2000 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 19-21 full open for 3642D – 850 CFM to get ESP to 1.2” and 1.5” W.C.

Outlet LocationOutlet Location

ESP-3642

5190

4706

2385

606

3806

5935

2748

9910

>

<

High Static PlenumHigh Static Plenum

ShortrunsShortruns Long runsLong runs

Will this pull

on fittin

g?

Considerations: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 ConnectionPlenum Connection

ESP-3642

5190

4706

2385

606

3806

5935

2748

9910

>

<

Plenum Take OffsPlenum Take Offs

Installation KitsInstallation 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 RunsSupport Takeoff Runs

•20 degree down angle minimizes stress

Round Duct

Round Duct

2” Air Supply Run2” Air

Supply Run

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

Minimum RadiusMinimum Radius

•Minimum 4” radius

•New 90° elbow

•Fits tight corners

•Runs down 2x4 wall

Quik-ConnectQuik-Connect

Tubing Takeoff RunsTubing 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”

Minimum 18”

18”

8”

Minimum 24”

Tubing Takeoff RunsTubing 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 2” Supply TubingTubing

• 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 TubingNew R-8” Supply Tubing

•Meets new codes where R8 is required in uninsulated space

•6-1/2” O.D. uncompressed