6
wIRINg TERmINAl
wire specifications
18-24gaugethermostatwire
Installation notes
•EnsurepowerattheHVACequipmentisoff.
•Loosenscrewterminals,insertstrippedwireand
re-tighten.
•Pushtheexcesswirebackintotheopeningandplug
thewallopeningtopreventdrafts.
INSTAllATION
RC–24VACsupplycooling*
R–24VACsupplyheating*
w–1ststageheat/auxiliary
Y–1ststagecooling/compressor
g – Fan
C–Common(optionalwhenpoweredbybatteries)
S1 & S2 – outdoor temperature sensor (optional)
O/b–Reversingvalve
l – System fault indicator
w2–2ndstageheat/auxiliary
Y2–2ndstagecooling/compressor
* Jumper between RC & R is used in single transformer systems
(see wiring diagrams).
C
G
Y
W
RL
S1 S2 O/B W2 Y2
RC
61000652C 8400 Tstat Install.indd 6 10/13/09 11:08:58 AM