User's Manual
9
Terminal descriptions
G Fan
RC Cool transformer
RH Heat transformer
O/B Heat pump reversing value
Y Y1, Y2: Used for 1 - 2 stages of convential A/C or
1 - 2 stages of heat pump compressor
W W1, W2: Used for 1 - 2 stages of convential heat or
1 - 2 stages of heat pump auxiliary heat
C 24VAC common
ACC $FFHVVRU\8VHGIRUGHKXPLGLÀHUVKXPLGLÀHUV
ventilators, HRVs or ERVs
ecobee
3
is designed for 24VAC with a 2A maximum current.
Do not connect it to line-voltage or high-voltage systems.
!