Rev 1.4 Page
5 of 14
CAUTION
When unscrewing the terminal post screws only back out the screw until
you feel a slight stop or resistance. Do not back the screw out any further
or damage to the terminal block could result.
RH RC C G H W2 W1 Y2 Y1 S1+ S1- S1 S2+ S2- S2 1 2 3 4 5 6
HVAC System
Heat
Control
Cool &
Heat
Power
RH
W
wire
Square
hole
Base Plate
Terminal Block
Figure 1 Connections for 2-wire HVAC
Wiring the Base Plate Terminals for 4-wire HVAC
Follow the same instructions as the 2-wire HVAC and make the connections as shown
in Figure 2.
HVAC System
Heat
Control
Fan
Control
Cool
Control
Cool &
Heat
Power
RH RC C G H W2 W1 Y2 Y1 S1+ S1- S1 S2+ S2- S2 1 2 3 4 5 6
RH
G
W
Y
Figure 2 Connections for 4-wire HVAC
The following conversion chart lists the standard HVAC terminal labels and the Proliphix
corresponding label.
