Direct Air PHRVR96 Посібник з монтажу, експлуатації та технічного обслуговування - Сторінка 10
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AIR FLOW BALANCING
* Fantech's superior design and use of EBM motors results in a steep fan curve that
usually does not require balancing. Commissioning the system after installation is
recommended which include confirming the proper operation of the system and how
it interacts with other components within the home.
AIRFLOW STATION (GRID) METHOD
B
1 For this flow measuring station, cut the duct
and place the flow measuring station between
each section of duct. Make sure that the flow
measuring station's air direction arrow points
in the direction of the airflow. Secure the flow
measuring station with duct tape.
12"
(300 mm)
Measure
here
10
2 Before taking the reading, make sure that the
magnehelic gauge is level and at 0. Refer to
the flow measuring station's chart to
determine your unit's airflow velocity.
• To avoid airflow
turbulence and incorrect
readings, the airflow
12"
velocity should be
(300 mm)
measured on steel
ducting a minimum of
12" (300 mm) from the
Measure
unit or elbow and before
here
any transition.
3 Adjust the "Supply Air Out" damper until you
reach the desired velocity. Follow the previous
steps to adjust the "Exhaust Air Out" damper,
if needed.