542933-UIM-C-0112
Johnson Controls Unitary Products 9
Outdoor Control Wiring
A new communicating heat pump or air conditioner (denoted by a “-C” in the model number) will
have two communicating plug terminals (as shown in Figure 8).
1. Disconnect all power from system (including high and low voltage).
2. Remove factory installed low voltage harness.
3. Plug the communication harness provided in the Touch Screen Communicating Control Kit (S1-
TTSCC01) into the communication port on the outdoor control.
4. Wire nut thermostat wire (from the indoor control) to the communication harness wires.
FIGURE 8:
Outdoor Communicating Terminals
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury, death, or equipment damage.
Before installing, modifying, or servicing system, the main electrical disconnect switch must be in
the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a
suitable warning label.
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