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16
I
NSTALLER
S
ELECTABLE
H
IGH
S
PEED
S
ETTINGS
Adjusting the DIP Switches
The circuit board on this unit has adjustable DIP switches for the selection of three different high speeds. The
factory setting is Hi3. Refer to
for the specifications sheet particular to the unit.
DIP Switch settings
Speed
Switch
1
2
3
4
Hi 3 (High Speed)
ON
Leave on factory setting
ON
ON
Hi 2 (Med Speed)
ON
Leave on factory setting
OFF
ON
Hi 1 (Low Speed)
ON
Leave on factory setting
ON
OFF
Note:
Low Speed is not adjustable; Switch 1 factory setting is ON
Functionality of DIP Switches
Switch
Status
Description
2
ON
Recirculation enabled
OFF
Recirculation disabled
Note:
Recirculation is not available on all units.
Adjusting the EC Motor (METRO-ECM)
The airflow on the METRO-ECM units can be adjusted up or down. The unit must be running for
speed alterations to be made.
1.
Set the unit to the speed which is to be
adjusted.
2.
Locate the ECM circuit board which is under
the metal cover on the side of the unit.
3.
Hold both buttons (S1 and S2) at the same
time for 6 seconds until the LED lights
illuminate.
4.
Press UP button (S1) or DOWN button (S2)
to adjust the motor speed. Press the button
multiple times for larger increases. The LEDs
will indicate whether the fan speed is at the
Factory Set speed (F. SET), above (HIGH), or
below (LOW).
5.
When the desired airflow has been reached no further action is required and the metal cover
can be fastened back on. This process may be repeated for any of the available speeds.
