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Step 6 — Installing the LED Display Panel —
1. The display panel has buckles on the bottom that are used
to secure it to the control box. See Fig. 21.
Buckle
5-core wire
(reserved)
Display board
Fig. 21 —LED Display Panel
2. Insert the buckles into the grooves in the electronic
control box, and slide the display panel horizontally to
lock in place. See Figs. 22 and 23.
Electronic control box
Wire aperture
Fig. 22 —LED Display Panel Installation Location
Connect the 10-core wire of the display board to control
3.
board assembly through wire aperture on electronic
control box
.
Display panel
locked in place
Fig. 23 —LED Display Panel Installed
10-core wire
Groove
Step 7 — Position and Connect Controller —
Wired controllers should be installed in a position that
maintains good temperature control:
• Position the thermostat approximately 48 inches above
floor level
• Do not position thermostat where it can be directly
affected by the unit's discharge air-stream.
• Avoid external walls and drafts from windows and doors.
• Avoid positioning near shelves and curtains as these
restrict air movement.
• Avoid heat sources such as direct sunlight, heaters,
dimmer switches, and other electrical devices.
• See Fig. 24 for an example of communication wire
connection.
CONTROL WIRING —
1. The communication wire must be 2-core stranded
shielded cable.
2. For IDU (indoor unit) and ODU (outdoor unit)
communication, use P, Q terminals. Shield drain wire
should be used for ground.
3. Wiring should be done according to wiring diagram.
Communication wire must not form a closed loop.
4.
To outdoor/indoor/MDC units
comm. bus
Fig. 24 —Communication Wire Connection
OPTION/EXTENSIONS OF COMMUNICATION WIRING — To
extend control wiring or make terminal connections, use the
PQE connection wire supplied in the accessory kit and follow
these steps.
1. Cut the connector on the outdoor unit side. See Fig. 25.
Fig. 25 —Shearing Outdoor Connector
Strip a suitable length of the insulation layer. See Fig. 26.
2.
Fig. 26 —Stripping the Wire
16
XT2
To wired controller comm. bus
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