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Plenum Runs

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Page 1: 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

PlenumRuns

PlenumRuns

Page 2: 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

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

Page 3: 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

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!!!!

Page 4: 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

Square Duct BoardSquare Duct Board

Page 5: 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

Spiral Round DuctSpiral Round Duct• Proper insulation and vapor barrier

critical

• Spacepak plenum take-offs for metal round

• Support properly

Page 6: 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

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

Page 7: 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

Branch Tee’s 70/30Branch Tee’s 70/30

30% OFMAXIMUMCAPACITY

Page 8: 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

Ideal 50/50 SplitIdeal 50/50 Split

Page 9: 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

Another SolutionAnother Solution

Page 10: 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

60/40 Split60/40 Split

Page 11: 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

NO NOZZLES HERE

ESP-4860ESP-4860

Page 12: 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

Think “2 Systems”Think “2 Systems”

SYSTEM ONE

SYSTEM TWO