Carrier 48EJ, 48EW, 48EY024-068 Field Control Thermostat Wiring, Field Control Temperature Sensor

Models: 48EJ 48AJ 48AK 48EK 48AY020-060 48AW 48EY024-068 48EW

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Fig. 32 — Field Control Thermostat Wiring

Fig. 32 — Field Control Thermostat Wiring

NOTE: Sensor part numbers are as follows:

T-55CEC0121448-01

T-56CEC0121448-01

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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Carrier 48EJ, 48EW, 48EY024-068 Field Control Thermostat Wiring, Field Control Temperature Sensor, Wiring CV or VAV Units