Phoenix Controls FSR100 - Page 4

4 OF 12—FAN STATIC RESET KIT MKT-0266 MPC-1480 ©2010 Phoenix Controls Specifications subject to change without notice. Rev. 5/10
NOTE: These guidelines should provide adequate readings. However, the only way to confirm the suitability of the pressure
pickup location is to perform a full duct traverse following the procedures outlined in the ANSI/ASHRAE 111-2008
Measurement, Testing, Adjusting, and Balancing of Building HVAC Systems. If the pressure reading at the pressure
pickup is within 5% of the values measured when the duct was traversed, this is the optimum location.
The pressure pickups must be located in a position on the duct that will not be susceptible to becoming clogged or allow
condensation to enter the sensing tubes. On round or oval duct, it is recommended the pressure pickups be placed in the upper
portion of the circumference of the duct between 8 and 4 o'clock. On rectangular duct, the preferred placement of pressure pickups
is on top of the duct, well away from the corners. Other acceptable locations are at least 2-3" (51-76 mm) up the side wall of the
duct and not near any corner of the duct. Mounting the pressure pickups on the bottom of the duct is not permitted.
Mounting the pressure pickups
The pressure pickups are mounted directly to the duct using 2 self-drilling "Zip" screws (included). A closed cell foam gasket seals
the pressure pickup to the duct.
Once you have determined the proper location of the pressure pickup, you will need an area free of any insulation. The pressure
pickups must be mounted directly on the duct surface. The pressure pickups may not be used on double-walled or lined duct. If the
duct is double-walled, contact your Phoenix Controls Representative for recommendations.
1. Orient the pressure pickup so that the arrow etched on the mount plate indicates the airflow direction.
NOTE: It is important that the top and bottom mounting screws are oriented perpendicular to the direction of airflow so as
not to cause obstructions near the pickup.
Min. 3.0 straight
duct diameters
Min. 4.0* straight
duct diameters
Min. 1.5 duct
diameters
downstream of
any obstruction
Min. 2.5 duct
diameters
downstream
Min. 1.5 duct
diameters
upstream
Min. 1.5 duct
diameters
downstream of
any obstruction
*ANSI/ASHRAE standard exceeded by FSR100 product requirement