Marvair Scholar 2.0 I&S Manual 04/2022 Rev.2
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Chapter 3: Scholar 2.0 Calibration, Controls & HMI Operation
3.01 VENTILATION SYSTEM CALIBRATION
Prior to start-up of the Scholar 2.0 heat pump or air conditioner, the ventilation
system requires calibration to ensure the appropriate amount of fresh air is delivered
to the classroom. Refer to the appropriate following ventilation system and use the
instructions to calibrate the system for correct air delivery.
A. Manual Fresh Air System. This ventilation module is standard with the Scholar
2.0 heat pump and air conditioner. Fresh air ventilation by means of a damper with
pressure relief provides up to 450 cfm of outside air. The damper can be manually
adjusted at installation to provide the required ventilation airflow.
The fresh air door should be set in accordance with the amount of fresh air flow
required, up to a maximum of 450 CFM. Figure 10 illustrates the fresh air door
settings and air flow rates.
Follow the directions in Figure 10 to ensure proper air flow rate settings. After
calibrating the ventilation system, replace the lower front cabinet panel.
B. Two position motorized damper and PowerVent Fresh Air Systems. The two position
(open & closed) ventilation module is equipped with a motorized damper and
pressure relief, and provides up to 450 cfm of outside air. The damper position can
be adjusted at installation to provide the required ventilation air flow. The motorized
damper operates by an external relay with a choice of 24, 120, or 240V coils, to
regulate fresh air ventilation in response to a control located remotely from the heat
pump or air conditioner. The two motorized damper ventilation option includes the
ventilation intake air mover and an exhaust fan motor. The intake and exhaust motor
speed is adjustable from the HMI screen on the PLC.
This PowerVent ventilation module features a motorized damper, as above, plus
powered exhaust ventilation to provide up to 450 cfm of outside air. The damper
position can be adjusted at installation to provide the required ventilation air flow.
The PowerVent option includes a ventilation air intake air mover.
The fresh air door is opened and closed by the motorized drive. Calibration, as
shown in Figure 10, will ensure the required amount of air, up to a maximum of 450
CFM, is delivered to the classroom.
Follow the directions in Figure 11 to ensure the proper air flow rate setting. After
calibrating the ventilation system, replace the lower front cabinet panel.
