User's Manual

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© 2016 Schneider Electric. All rights reserved.
Wiser Air Installation Guide 1-855-559-4737 www.wiserair.com
G
In all applications, the G terminal engages the fan of the HVAC equipment.
W, W2
In a conventional system
• The W terminal engages the rst stage of heating.
In a heat pump system
• The W terminal engages the auxiliary heat or emergency heat.
In advanced, multi-stage systems
• The W2 terminal engages the second stage of heating.
Y, Y2
In a conventional system
• The Y terminal engages the rst stage of air conditioning.
In a heat pump system
• The Y terminal engages the compressor in both heating and cooling modes.
In advanced, multi-stage systems
• The Y2 terminal engages the second stage of cooling.
C
Wiser Air also requires a connection to the common side of the 24V transformer.
If you are replacing a thermostat that also had a C wire
• Move that wire to the C terminal.
If you are replacing a thermostat that did not have a C wire
• If there are spare conductors that were not connected to your old thermostat, one
of these can possibly be used as the C conductor. Before connecting the spare
wire to C on the thermostat, verify that that the conductor is connected to the
24VAC Transformer common terminal in the HVAC wiring compartment. Connect
the conductor at the HVAC equipment if necessary and then connect it to the C
terminal on the thermostat.
• If no spare conductors are available, then use the Wire Extender as described in
the Appendix.
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