Electrical Connections At The Outdoor Unit - Trane 22 Series Installer's Manual

22 Series Multi-Zone
Electrical Connections at Outdoor Unit
For all models, terminals N(1) and 3 are for power; terminal 2 is for communication.
It is recommended to use a different wire color for each terminal connection in order to reduce
the risk of miswiring.
18K Model
L1 L2
21K Model
L1 L2
24K Model
30-42K Model
INDOOR UNIT A
L2
L1
L2
L1
OUTDOOR UNIT
INDOOR UNIT A
INDOOR UNIT B
INDOOR UNIT B
INDOOR UNIT C
OUTDOOR UNIT
INDOOR UNIT D
INDOOR UNIT C
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C
C
INDOOR UNIT D
INDOOR UNIT E