Air Flow Balancing
Pitot Tube and Gauge
DUCT
AIR 
FLOW
Pitot tube
Magnehelic gauge
High Pressure Side
MAGNEHELIC
Low Pressure Side
Pitot Tube Air Flow Balancing Kit
Part No.
1 - magnehelic gauge
1 - Pitot Tube and hose
1 - Carry Case
ATTENTION
Apply use of balancing dampers as required.
NOTE
Graphic is for illustrative purposes only. Duct connection ports may vary.
Placement of Pitot Tube HRV
Place pitot tube a minimum of 18" from blower or elbows
Outdoors
Pitot
tube
Magnehelic
gauge
MAGNEHELIC
Note: Duct connections may vary, | Additional dampers | Magnehelic |
gauge | ||
depending on model. | may be required |
|
MAGNEHELIC
Pitot tube
Balancing Collar Instructions
Often the “Fresh Air to House” ducting will have the heaviest air flow which must be dampered down. A Balancing Damper is located in the “Fresh Air to House” collar. The Balancing Collar feature is not available on all models.
Hard/Rigid
ducting
Push and turn with slotted screwdriver. Damper
automatically locks when
pressure is released.
Insulated flexible
ducting
Installations where the HRV is ducted directly to the return of a furnace may require additional dampening on the fresh air to building duct.
This is due to the high return static pressures found in some furnace installations.
1/2”
When connecting ductwork to the collar, take note where screws are located. Screws should be located no further
than 1/2” from outside edge of collar, so as not to impede operation of the damper.
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