Carrier 48EJ, 48EW, 48AW, 48EK CCN Connection Approved Shielded Cables, Color Code Recommendations

Fig. 32 — Field Control Thermostat Wiring

NOTE: Sensor part numbers are as follows:

T-55 — CEC0121448-01

T-56 — CEC0121448-01

Fig. 33 — Field Control Temperature Sensor

Wiring (CV or VAV Units)

Conductors and drain wire must be 20 AWG minimum stranded, tinned copper. Individual conductors must be insulat- ed with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum op- erating temperature range of -20 C to 60 C (-4 F to 140 F) is re- quired. Table 9 lists cables that meet the requirements.

Table 9 — CCN Connection Approved

Shielded Cables

MANUFACTURER	CABLE PART NO.
Alpha	2413 or 5463
American	A22503
Belden	8772
Columbia	02525

IMPORTANT: When connecting the CCN communica- tion bus to a system element, use a color coding system for the entire network to simplify installation and checkout. See Table 10.

Table 10 — Color Code Recommendations

SIGNAL	CCN BUS CONDUCTOR	CCN PLUG
TYPE	INSULATION COLOR	PIN NO.
Positive (+)	RED	1
Ground	WHITE	2
Negative (-)	BLACK	3

NOTE: If a cable with a different color scheme is selected, a similar color code should be adopted for the entire network.

At each system element, the shields of the communication bus cables must be tied together. If the communication bus is entirely within one building, the resulting continuous shield must be connected to a ground at one point only. If the com- munication bus cable exits from one building and enters anoth- er, the shields must be connected to grounds at the lightning suppressor in each building where the cable enters or exits the building (one point per building only).

To connect the unit to the network:

1.Turn off power to the control box.

2.Cut the CCN wire and strip the ends of the red (+), white (ground), and black (-) conductors. (If a different network color scheme is used, substitute appropriate colors.)

3.Remove the 3-pin male plug from the base control board in the main control box, and connect the wires as follows:

a.Insert and secure the red (+) wire to terminal 1 of the 3-pin plug.

b.Insert and secure the white (ground) wire to termi- nal 2 of the 3-pin plug.

c.Insert and secure the black (-) wire to terminal 3 of the 3-pin plug.

4.Insert the plug into the existing 3-pin mating connector on the base module in the main control box.

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