Carrier PERFORMANCETSERIES EDGER THERMIDISTATT CONTROL TP-NRH-A Installation Instructions Manual page 15

6. Match and connect equipment wires to proper terminals of each connector
block, being careful not to over tighten the screws. Correct polarity must
be observed when connecting the two wires from the Equipment Control
Module to the Thermidistat Control mounting base. If wires are
connected incorrectly, the Display Module will not operate. See Fig. 7, 8
and 9.
S Red is V+
S Black is Vg
Fig. 7 − Control Module Wiring Guide
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