Chapter 11 General wiring information
84 CNT-SVX12C-EN
Figure 30. Wiring for packaged heating and cooling units
Figure 31. Wiring for split system applications
Compressor 1 contactor
Heat stage 1
Tri-state
modulating
economizer
(optional)
Fan
H
N
24 Vac
Generic binary output (dry contact)
Compressor 2 contactor
Heat stage 2
Primary
Secondary, 24 Vac
G
Y1
Y2
R
W1 W2
Compressor 1 contactor
Heat stage 1
Tri-state
modulating
economizer
(optional)
Fan*
H
N
24 Vac
Generic binary output (dry contact)
Compressor 2 contactor
Heat stage 2
Primary
Secondary, 24 Vac
G
Y1
Y2
Rc
W1
W2
Primary
Secondary, 24 Vac
Rh
*Wire the fan (G) to the appropriate section of the split system.