Aprilaire 8400 Series Safety & Installation Instructions page 5

INSTALLATION
WIRING – MODEL 8465 & 8446 SINGLE
TRANSFORMER (USE JUMPER WIRE)
RC R W Y G C S1 S2 O/B
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WIRING – MODEL 8465 & 8446 TWO
TRANSFORMERS (REMOVE JUMPER WIRE)
L RC R W Y G C S1 S2 O/B
INSTALLATION
WIRING – MODEL 8466 & 8448 SINGLE
TRANSFORMER (USE JUMPER WIRE)
FOR HEAT/COOL SYSTEM
RC R W Y G
L
WIRING – MODEL 8466 & 8448 TWO
TRANSFORMERS (REMOVE JUMPER WIRE)
FOR HEAT/COOL SYSTEM
C S1 S2 O/B L W2 Y2 RC R W Y G C S1 S2 O/B L W2 Y2
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