Fantech SER 1504 Installation Manual

Also see for SER 1504: Installation, operation and maintenance manual Instruction manual

Contents

Fantech SER 1504 Installation Manual Manual pdf 13 page image

13fantechAirflow balancing (cont'd)1 Cut hole in duct and insert flow measuringstation. Make sure that the flow measuringstation’s air direction arrow points in thedirection of the airflow. Secure the flowmeasuring station with duct tape.2 Before taking the reading, make sure thatthe magnehelic gauge is level and at 0.Refer to the flow measuring station’schart to determine your unit’s airflowvelocity.3 Adjust the “Supply Air Out” damper untilyou reach the desired velocity. Followsteps 1-3 to adjust the “Exhaust Air Out”damper, if needed.MeasurehereMinimum457mm(18")MeasurehereMinimum457mm (18")• To avoid airflow turbulence and incorrectreadings, the airflow velocity should bemeasured on a section of steel ducting.Reading should also be taken at a minimumdistance of 457mm (18") from the unit orelbow. Measurement should also be madeprior to any transition in the duct work soentire airflow is measured.Measuring the airflow using station (grid) methodAdjusting airflowsA damper is integrated into the Fresh Air to Building collar. This damper replaces the installation of a separatedamper into the Fresh Air to Building ducting line.The damper-collar is pre-set in the fully opened position. If the procedure requires a reduction in airflow to the freshair duct, simply turn positioning knob located on the side of the collar clockwise until desired airflow is obtained. Thedamper position can be determined by the orientation of the pointers situated on the side of the damper. The damperis fully open when the pointers are towards the top of the collar (as shown in picture) and fully closed when they aresideways.Once procedure is completed, install a piece of tape over positioning knob to avoid any tampering by the home owner.Do not turn positioning knob counterclock wise when dampers are fully opened as damage may occur to the mechanism