5. Connect the transducer plug harness (the one where the
white wire on the other end is connected to PSIO1, J7-
TOP, pin 10) to the discharge pressure transducer for com-
pressor no. 2.
6. Connect the other plug harness (the one where the white
wire on the other end is connected to PSIO1, J7-TOP, pin
16) to the suction pressure transducer for compressor
no. 2.
054-074 UNITS — To wire the compressor section:
1. Locate the 2 connection boxes, 2 covers, 4 connectors,
the varnish cloth, and the screws in the accessory
package.
2. Mount one of the connection boxes on the compressor
side of each of the filter drier brackets (See Fig. 8).
3. Using 2 of the knockouts on each box, install 2 con-
nectors for wiring in each box.
4. Run the marked wire cable through one connector of
the box for compressor no. 1 (located on the left when
viewing mounted boxes from the control box end) using
varnish cloth.
5. Run the unmarked wire cable through one connector of
the box for compressor no. 2 (located on the right when
viewing mounted boxes from the control box end) using
varnish cloth.
6. Locate the 4 transducer plug harness assemblies in the
accessory package.
7. Plug one of these into the discharge and suction trans-
ducers for each compressor. Mark the white wire in the
discharge transducer harness for each compressor.
8. Run two transducer harnesses into the connection box
closest to each compressor. (One marked and one un-
marked harness will go into each box.)
9. In each connection box, connect the red wire from the
2 transducer harnesses to the red wire from the cable,
and the black wire from the harnesses to the black wire
from the cable using the wire nuts provided. See
Fig. 4.
10. In each connection box, connect the white wire from
each transducer harness connected to the discharge pres-
sure transducer (marked) to the white wire from the cable
using the wire nuts provided. See Fig. 4.
11. In each connection box, connect the white wire from each
transducer harness connected to the suction pressure trans-
ducer (unmarked) to the brown wire from the cable us-
ing the wire nuts provided. See Fig. 4.
12. Install a cover on each of the connection boxes.
NOTE: The connection box is mounted on the back side of the bracket between the filter drier and compressor.
Fig. 8 — Connection Box Location, 054-074 Units
8