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Daikin EC Fan Array
The Daikin EC Fan Array is made of an impeller, EC motor, and
inverter. It is installed as an assembly, and in the event of failure,
the entire assembly must be replaced. Bearings are permanently
sealed and lubricated, so no periodic greasing is necessary.
A minimum 24" access section is recommended downstream
of the ECM fan array section to gain access to the fans.
If an access section is not selected downstream of the
fan array, there will be very limited access to the fans for
service/replacement.
The entire array is controlled via a 0-10V signal. Control signal
is wired to points 3 and 4 on the Daikin low voltage terminal
strip seen in
Figure
72. There are two other points for the EC
Fan Array: fan array enable and disable are points 1 and 2,
and fan array fault are points 5 and 6. For Gen2 motors, if any
fan in the fan array faults, there is a contact closure between
5 and 6. For Gen3 motors, if the fan array faults, the contact
connection between 5 and 6 will open. See Figure XX for
determining a Gen2 vs Gen3 motor.
NOTE: To DISABLE the array, connect points 1 and 2
together. The array defaults to ENABLE with
nothing connected to points 1 and 2.
The Daikin EC Fan Array has an optional gravity actuated
block off damper. These dampers are equipped with counter
weights.
The EC Fan Array has an option for a block off plate that
can be ordered as a parts kit from the Daikin Parts group. A
minimum 24" access section is recommended upstream of the
ECM fan array section to install block-off plate.
Remote Mounted Panel
The control panel can be ordered for remote mounting. For
remote mounted panels, the control wiring for the individual
fans will be provided; however, the control wiring to connect the
final fan to the control panel and all of the power wiring must
be field-provided.
30 foot long high voltage harnesses may be ordered through
the Daikin Parts Group using part number 910232406. One
high voltage harness is required per fan.
If wiring harnesses are not purchased through Daikin, follow
the below instructions to install the wiring.
1. High Voltage Power Wiring:
a. Remove the plate on the back of each fan.
b. Remove the provided high voltage plug and wiring
shown in
Figure
c. Cut, strip, and connect 14-gauge wiring directly to
each motor terminal shown in
attention to the correct phasing. Reference the
wiring diagram in
d. Cut, strip, and connect the other end of the wiring
to the Manual Motor Protector (MMP) in the control
panel, paying attention to phasing. Reference the
wiring diagram in
www.DaikinApplied.com
67.
Figure
67, paying
Figure
73.
Figure
73.
NOTE:
Figure 68
shows a single fan control box. There will
be 1 MMP per fan in the array to connect each fan to.
2. Low Voltage Control Wiring:
a. 22-gauge Cat5 wiring, a standard 6-circuit female
Molex plug (39-01-2061), and six Molex crimp
terminals (39-00-0040) are required
The finished harness will have a plug on one end
and stripped wire on the other end.
b. Attach the wiring to the Molex crimp terminal
and insert into the Molex plug. See
correct crimp terminal locations; reference
72 or YY
for wiring numbers (out of ECM01).
Connect to the male plug that is on the last fan in
the array.
c. Insert the stripped wire end into the terminals in the
control panel, following the wiring diagram shown
in
Figure 72 or
68.
Figure 68: Fan - High Voltage Wiring
39
IM 777-18 • SKYLINE OUTDOOR AIR HANDLER
o
G
peraTIon
uIdelInes
(Figure
Figure 70
YY. Terminals are shown in
69).
for
Figures
Figure
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