DCN 141-01128-04 10/6/08
33
HVAC SYSTEM CONNECTION
Heat Pump HVAC System Wiring
Heat Pump HVAC System Setup Notes
Single Stage Compressor Systems use Y1 for stage 1 heating/cooling, and W1 for stage 2 heating (heat
strips).
Two Stage Compressor Systems use Y1 for stage 1, Y2 for stage 2 heating/cooling, and W1 for stage 3
heating (heat strips).
NOTE: You must configure the Changeover valve setting to work correctly with your HVAC
system. Changeover settings are made in the Installer Settings – System Settings - Mechanical
Settings menu. Changeover with cool is typical for most systems. Check your system
information to be sure. If you get cooling when you expect heating, change the C/O type to the
opposite setting.
W1 Aux Heat Stage 1
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