Plenum Runs Plenum Runs

Plenum Run Usually located in the attic or basement. Run in any location accessible for attachment of supply tubing. More economical to run where it shortens length of 2 or more supply runs. Insure layout will allow recommend balancing. copyright Mestek, Inc. 2004

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!!!!

Square Duct Board

Spiral Round Duct Proper insulation and vapor barrier critical Spacepak plenum take-offs for metal round Support properly

Using Tees Install tee minimum of 24” after air handler. No outlets between fan & tee. No more than 60% of capacity on one leg 24” NO MORE THAN 60% of CAPACITY ON ONE SIDE

Branch Tee’s 70/30 30% OF MAXIMUM CAPACITY

Ideal 50/50 Split

Another Solution

60/40 Split

NO NOZZLES HERE ESP-4860

Think “2 Systems” SYSTEM ONE SYSTEM TWO