Emerson PMAC II Solo, Installation And Operation Manual

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Sensor Mounting and Wiring Overview • 2
2. Provide 120 VAC (15 amp circuit) to the
PMAC II Solo panel through a store circuit
breaker. See the layout design in
Figure 1-3
.
3. Provide power to the case heaters from the
store circuit breaker panel through the PMAC
II Solo panel terminal strip using #10-12
AWG wire, as shown in
Figure 1-4.
Additional setup steps required are:
1. Wire the indoor air temperature sensor and
indoor relative humidity sensor to the termi-
nal strip at the bottom of the panel.
2. Program the high and low dewpoint setpoints
from the UC12PG-R controller’s front panel.
1.3. Sensor Mounting and Wiring
1.3.1. Mounting
The PMAC II Solo comes equipped with a wall-mount-
ed indoor temperature sensor (
P/N 809-6580
), and a wall-
mounted relative humidity sensor (
P/N 203-5751
).
1.3.1.1. Indoor Temperature Sensor
The indoor temperature sensor should be mounted in a
central location—within the zone to be measured—away
from doors, windows, vents, heaters, and outside walls that
could affect temperature readings. The sensor should be be-
tween four and six feet from the floor. In addition, the sen-
sor should not be mounted above other sensors that
generate heat during operation (such as relative humidity
sensors).
To mount the sensor, use a screwdriver to press in the
tab on the left side of the sensor enclosure, and lift the cover
off the enclosure. Use the two mounting holes on the back
panel to screw the sensor enclosure onto a flat surface (as
shown in
Figure 1-5
).
1.3.1.2. Indoor Relative Humidity Sensor
The indoor relative humidity (RH) sensor should be
mounted in a central location within the zone to be mea-
sured, away from doors, windows, vents, heaters, and out-
side walls that could affect humidity readings. The Sensor
should be between four and six feet from the floor. Note
that the RH sensor generates a small amount of heat; there-
fore, do not mount temperature sensors directly above RH
sensors.
Mount the RH sensor as follows:
Figure 1-3 - Typical Layout
Figure 1-4 - Typical Heater Wiring Layout
Figure 1-5 - Indoor Temperature Sensor Mounting