PlenumRuns

PlenumRuns

Plenum RunPlenum 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: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 BoardSquare Duct Board

Spiral Round DuctSpiral Round Duct• Proper insulation and vapor barrier

critical

• Spacepak plenum take-offs for metal round

• Support properly

Using TeesUsing 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 THAN60% of CAPACITY

ON ONE SIDE

Branch Tee’s 70/30Branch Tee’s 70/30

30% OFMAXIMUMCAPACITY

Ideal 50/50 SplitIdeal 50/50 Split

Another SolutionAnother Solution

60/40 Split60/40 Split

NO NOZZLES HERE

ESP-4860ESP-4860

Think “2 Systems”Think “2 Systems”

SYSTEM ONE

SYSTEM TWO