Variable Capacity Models - Johnson Controls Hx 3 S1-THXU430W Installation Manual

5407934-UIM-C-1119

Variable Capacity Models

1. Disconnect all high-voltage power from the system.
2. Locate the factory-installed low-voltage wire harness at the bottom of
the control box.
3. Connect the three low-voltage wires using wire connectors. See Fig-
ure 12 for the wiring diagram.
DO NOT connect the R terminal from the thermostat to the unit control
board.
18
WARNING
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