Emerson PMAC II Solo, Installation And Operation Manual

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Sensor Mounting and Wiring Overview • 3
1. With a flat-head screwdriver, push down the
middle tab on the top of the sensor case and
pop the lid off to expose the circuit board.
2. Insert the flat-head screwdriver into the two
slots on either side of the top of the sensor
case and twist to separate the back plate from
the case.
3. Remove the knock-outs from the back plate
before mounting so wires may be threaded
through.
4. Mount the back plate to the wall using the
two open mounting holes on the top and bot-
tom of the plate.
5. Replace the cover on top of the back plate by
lining up the tabs, and snap the lid back into
place.
1.3.2. Wiring
The wall-mounted sensors must be connected to the ter-
minal strip at the bottom of the PMAC II Solo panel. The
necessary connections between this terminal strip and the
UC12PG-R controller are hard-wired by CPC during man-
ufacturing.
1.3.2.1. Wiring for RH Sensor
1.3.2.2. Sensor Cable Type
Wire the sensors to the PMAC II Solo terminal strip us-
ing Belden #8641 or equivalent for the temperature sensor,
and Belden #8771 or equivalent for the humidity sensor.
1.3.2.3. Wire Connections
Figure 1-9
shows how to connect the sensor cables to
the terminals on the sensor and the PMAC II Solo terminal
strip.
Table 1-1
gives the wire colors for the Belden #8771
three-conductor cable and where they must be connected
on the sensor and the PMAC II Solo terminal strip. The
Figure 1-6 - Indoor RH Mounting Dimensions
NOTE: Before wiring connections are made
on the RH sensor, the output select switch
must be set to "VOLTS", and the jumper set to
"5V" (five volts). See (Figure 1-7).
Figure 1-7 - Indoor RH Sensor Board
Figure 1-8 - Indoor RH Sensor Wiring