IM 1285-4 • MICROTECH III 10 www.DaikinApplied.com
If the unit contains a water ow sensor, it does not need to
be replaced. Relay R11 is wired to the output of this switch to
close a set of dry contact, which will complete a circuit on the
MTIII indicating water ow. If there is not a Water Flow Sensor,
a jumper will need to be wired to the MCB to avoid nuisance
alarms on the MT III. The wiring is described later on in this
manual.
A unit designed for a Variable Air Volume Application will
need a VFD installed for desired operation. The VFD can be
mounted using screws on the outer frame of the unit to the left
or right of control panel. Two holes need to be drilled below
the VFD and into the control panel for power and signal wiring
conduit. See Figure 13 and Figure 14.
Daikin only supports installing ABB (ACS320,
ACH550, and ACH580), Schneider (ATV212) or
Danfoss (FC102) VFDs. The installation location of
the VFD is dependent on the technician. They must
choose a location with proper ventilation to avoid
overheating. An example of an ABB VFD mounting is
shown in Figure 13 and Figure 14.
Figure 13: Mounting VFD
Figure 14: VFD Installed
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