Technical Data; Air Flow Settings (Xcell 400 Qv Model Only); Air Flow Settings (Xcell 400 Qvw Model Only); Pcb Port Pins (Xcell 400 Qvw Model Only) - Xpelair Xcell 400 QV Installation And Operating Instructions Manual

6 Technical Data

6.1 Air flow settings (Xcell 400 QV model only)

Air flow rates can be changed by a qualified service technician using the adjustment potentiometers inside the
Manual 2-Speed Switch purchased for this MVHR, as shown in the picture below.
The potentiometers adjust both Fan speeds simultaneously i.e. independent Fan speed control is not
available.
Turning the potentiometer to the right increases the control voltage / speed of both Fans and turning it to the
left reduces the control voltage / speed of both Fans. There are two potentiometers, see section 6.4 below for
the factory default speed settings.

6.2 Air flow settings (Xcell 400 QVW model only)

Air flow rates can be changed by a qualified service technician using the adjustment potentiometers (3x blue)
for the supply air Fan and (3x red) for the exhaust air Fan, as shown in the picture below.
3 pot's for
supply air speed
adjustment
PCB port pins
3 pot's for exhaust
air speed
adjustment
The potentiometers adjust the Fan speeds independently i.e. common Fan speed control is not available.
Depending on the Fan speed selected (1, 2 or 3) the Fans have a specific control voltage of between 1.7 V
minimum up to a maximum of 10.0 V. The control voltage for the supply air and exhaust air Fans is also
adjusted via each set of three potentiometers on the PCB.
S1 – Supply air speed 1 - blue potentiometer
S2 – Supply air speed 2 - blue potentiometer
S3 – Supply air speed 3 - blue potentiometer
Turning the potentiometer to the right increases the control voltage / speed of each Fan and turning it to the
left reduces the control voltage / speed of each Fan.

6.2.1 PCB port pins (Xcell 400 QVW model only)

Via port pins on the PCB, the control voltage for each speed setting can be measured with a voltmeter.
The control voltage for the exhaust air and supply air Fans can be set separately at between 1.7 V and 10.0
V by adjusting the potentiometers as described above.
See also the wiring diagrams in section 7.
Two supply / exhaust air speed
adjustment potentiometers
and S1 – Exhaust air speed 1 - red potentiometer
and S2 – Exhaust air speed 2 - red potentiometer
and S3 – Exhaust air speed 3 - red potentiometer
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