9 69-1199—2
Table 2. Terminal Designations on Old and New Thermostats
aIf both RH and R terminals are present on existin
g
thermostat, remove jumper and connect Rh to R and R to Rc.
bDo not connect both O and B when wirin
g
to a sin
g
le sta
g
e heat pump. Connect O to O. Tape off B.
cTape off end of the wire with electrical tape and push the taped wire back into the wirin
g
hole in the wall.
STEP 5. INSTALL THE BATTERIES
IMPORTANT

Three AA alkaline batteries are included with the thermo-

stat. Batteries must be installed for programming and

operation of the thermostat and the heating/cooling sys-

tem.

❑Install the batteries in the wallplate so the positive terminals all
point up (see illustration).
Terminal on Old Thermostat Connect To Description
R, RHa, 4, V R Power
Rc, RaRc Power for coolin
g
W, W1, H W Heat
Y, Y1, M Y Coolin
g
G, F G Fan
O O Chan
g
eover in cool. (Sin
g
le sta
g
e heat pump onl
y
).
BbBbChan
g
eover in heat. (Sin
g
le sta
g
e heat pump onl
y
).
Cc, Xc, BbDo not connect. Transformer common
W2, H2Do not continue installation.
Call 1-800-468-1502. Second sta
g
e heat.
Y2Second sta
g
e cool.
M10622
INSTALL 3 AA ALKALINE BATTERIES
AS SHOWN, POSITIVE (+) TERMINALS
TOWARD TOP.
WALLPLATE
B
RRCOWYG