Low Voltage Connections - Bard Q-TEC Series Literature Assembly

LOW VOLTAGE CONNECTIONS

The "R" terminal is the 24 VAC hot terminal and is
supplied through Pin #10 of Plug P2.
The "C" terminal is the 24 VAC common/grounded
terminal and feeds through Pin #11 of Plug P2.
The "G" terminal is the indoor blower input signal and
feeds through Pin #6 of Plug P2.
The "Y1" terminal is the compressor starting signal and
feeds through Pin #7 of Plug P2.
The "Y2" terminal is the compressor staging solenoid
signal and feeds through Pin #4 of Plug P2.
The "O" terminal is the reversing valve signal and feeds
through Pin #8 of Plug P2.
The "A" terminal is the ventilation demand signal
and outputs a signal for ventilation during occupied
programming conditions, and feeds through Pin #5 of
Plug P2.
The "W2" terminal is the auxiliary heat signal and
feeds through Pin #9 of Plug P2.
The "W1/E" terminal is the emergency heat signal and
feeds through Pin #3 of Plug P2.
The "L" terminal is used as an input terminal when a
CS2000 infrared occupancy device is used. It feeds
through Pin #12 of Plug P2.
The "D" terminal is used only of dehumidification
models and feeds through Pin #1 of Plug P2.
LOW VOLTAGE CONNECTIONS FOR
Fan Only
Ventilation
Part Load Cooling
Full Load Cooling
Part Load HP Heating
Full Load HP Heating
Auxiliary Heat
Dehumidification
FIGURE 13
Blower Motor Low Voltage
Wire Harness Plug
MIS-1285
DDC CONTROL
Energize G
Energize G, A (any mode of operation)
Energize G, Y1, O
Energize G, Y1, Y2, O
Energize G, Y1
Energize G, Y1, Y2
Energize G, W2
Energize G, D, O
Manual 2100-738A
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