Aprilaire 8344 - Manual (Page 9)

Step 6.
Install supplied batteries
Install two new AA alkaline batteries (included). Do not mix old and new
batteries
Step 7.
Reassemble the thermostat
No tools required – simply snap the thermostat face back on the thermostat.
8
Y1
O/B W2
L C R
1ST
STG
COMP.
REV
VALVE
DEFR
OST
SER
VICE
OUTDOOR HEAT PUMP UNIT
FAN
RELAY
AUX.
HEAT
R
HEAT/BLOWER EQUIPMENT
C
G
W2
Y1
1ST STAGE COMPRESSOR
L1 L2 120
VAC
24
VAC
R
G
Y
W2
O/B
C
L
COOL
HEAT
LO
ON
AUTO
CHECK AUX
APRILAIRE MODEL 8346
OR 8365 THERMOSTAT
RED
BLK
WHT
YL
W
ORG
BLU
BLU
ORG
YLW
WHT
GRN
BLK
RED
ORG
RED
BLK
GRN
YLW
WHT
BLU
RED BLU BLK
WHT ORG YL
W
Diagram 3 – Model 8346 or 8365 Thermostat Wiring
NOTES:
1. Wire colors shown
for reference only.
2. Common (C)
connection required
only for thermostat
LED operation.
SEE NOTE 2