Identify Wiring - BAYweb BW-WT2 Owner's Manual

1

Identify Wiring

The objective of this step is to identify how your thermostat wiring is connected to your
furnace, air conditioner, or heat pump. This will also determine what type of control
scheme your system uses.
A) Turn off all power to your furnace, air conditioner, or heat pump.
CAUTION: Verify that all power has been turned off. Failure to turn power
!
off may result in personal injury, electric shock, and equipment damage.
B) Go to your existing thermostat and remove the cover or remove it from the wall as
needed so you can see the terminals where the wiring is attached.
C) Note what connections your system uses and verify that your thermostat is using the
correct terminals with the correct wire color as shown in the table below.
If your installation is using non standard wire colors, you will have to note what color is
being used for what terminal and match your wire colors to the appropriate terminal.
Terminal
R 24 VAC supply for heat/cool Red
Rh 24 VAC supply for heat
Rc 24 VAC supply for cool
W or W1 or Heat or Aux Heat
Aux
G Fan
Y or Y1 Cool
W2 2
Y2 2
O Reversing Valve
B Reversing Valve
E Emergency Heat
C or X 24 VAC Common
Function
nd Stage Heat
nd Stage Cool
Standard
Wire Color
Red
Red
White
Green
Yellow
Brown
Light Blue
Orange
Dark Blue
Varies
Blue or Black
6
My Wire Connected
Color (Y/N) ?