Carrier A07051 Installation Instructions Manual page 8

5. Drill two 3/16- -in. mounting holes in wall where marked.
6. Secure mounting base to wall with 2 anchors and screws provided
(additional anchoring holes available for more secure mounting if needed)
making sure all wires extend through hole in mounting base.
7. Adjust length and routing of each wire to reach proper terminal and
connector block on mounting base with 1/4 in. of extra wire. Strip only
1/4 in. of insulation from each wire to prevent adjacent wires from
shorting together when connected. See Fig. 2.
Fig. 2 - - Secure Wires to Terminal Strip
8. Match and connect equipment wires to proper terminals of the connector
blocks (see Fig. 3). If there are separate 24VAC transformers, one in the
indoor unit and one in the outdoor unit, connect the common of each to the
C terminal. Remove factory- -installed jumper wire from Rc and Rh terminals.
Connect the R from the indoor unit to the Rh terminal. Connect the R from
the outdoor unit to the Rc terminal. Then the W and G signals are taken from
the Rh power and the Y and O signals are taken from the Rc power.
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A07155