Figure 11; Mounting Th-Tune Controller To Wall; Power And Communication Wiring; Power Wiring - Bard W18AAPA Installation Instructions Manual

TH-TUNE CONTROLLER INSTALLATION

The Bard th-Tune single unit controller can be used in
place of the LC-6000 controller when only one MULTI-
TEC wall-mount air conditioner is being controlled.
If using a th-TUNE single unit controller instead of
the PLC controller, the alarm logging and remote
communications capabilities of the LC6000 controller
will not be available.
For optimum temperature sensor performance, the th-
Tune controller should be mounted on an interior wall
and away from any heat sources, sunlight, windows,
air vents, air circulation obstructions and/or any other
cause of erratic or false temperature sensing.

Mounting th-Tune Controller to Wall

1. Before performing any operations on the controller,
disconnect all power to the wall unit.
2. Separate the the front from the rear of the th-Tune
using a screwdriver (see Figure 11).

FIGURE 11

Separate Front of th-Tune from Rear
3. Disconnect the 4-pin connector from the front part
as shown in Figure 12.
FIGURE 12
Disconnect 4-Pin Connector
4. To remove cover A1 (Figure 13), unscrew screw,
press the point of attachment and separate cover
from base.
Manual 2100-678
Page 20 of 24
FIGURE 13
Remove Cover
Press here
Remove this screw
5. Drill the mounting holes in the wall (see Figure
14), then insert the plugs and screws supplied,
making sure that the electrical wires pass through
hole in base. The th-Tune may also be installed
on a 2 x 4 handi box to allow for wiring to be in
conduit.
FIGURE 14
th-Tune Base Dimensions
5.16"
3.29"
Power and Communications Wiring

Power Wiring

For the power wiring, use standard 18 gauge twisted
pair wiring.
Power wires from the th-Tune connect to a special
terminal block located next to the control board on
the wall unit control panel. This terminal block will be
labeled, "pAD Single Unit Controller" (see Figure 17).
When wiring power to the th-Tune from the wall unit,
ensure that G0 from the wall unit terminal is wired to
the GND terminal on the th-Tune power terminal block,
and G from the wall unit terminal is wired to the 24V
terminal on the th-Tune power terminal block. Failure
to wire these correctly will result in damage to the PLC
and th-Tune controller.
See Figures 15 and 16 for guidance with connecting
the power and communications wires.
A1
E