Thermostat Wiring - BAYweb BW-WT2 Owner's Manual

W or W1 Heat
G Fan
Y or Y1 Cool
C or X 24 VAC Common
W2 Stage 2 Heat
Y2 Stage 2 Cool
O or O/B Reversing Valve (Heat Pump)
E Emergency Heat (Heat Pump)

Thermostat Wiring

If you need to replace your thermostat wiring, or are installing wiring for new equipment, use
the following wire specification 18 AWG 4, 5, or 7 Conductor 300V, Type CL2 (UL) 105 Deg C.
White
Green
Yellow
Blue or Black
Pink or other color
Blue or Pink
Orange, Blue, or Black
Blue, Pink, Gray or Tan
27