Robertshaw 9801i2 User Manual Page 37

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Typical Connection Between
Thermostat and Equipment
C: 24 VAC Common
R: 24 VAC
Y1: 1
st
stage cooling
E/W1: Emergency heat / 1
st
stage heating
W2: 2
nd
stage heating
Y2: 2
nd
stage cooling
L: System fault indicator
O: Cool active reversing valve
B: Heat active reversing valve
G: Fan
38
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