
PTAC #1
W
G
W
G
W
G
PTAC #N
PTAC #2
FRONT DESK SWITCH PANEL
24-V
TRANSFORMER
(SEE NOTE)
LEGEND
AWG — American Wire Gage
PTAC — Packaged Terminal Air Conditioner
NOTES:
1. To size transformer, use the following equation:
Quantity of PTAC units x 12 va = Transformer Size (va)
Example: 110 PTAC Units x 12 va = 1320 va Transformer
2. Following are recommended wire sizes:
AWG WIRE SIZE NO. MAXIMUM LENGTH (ft)
24 400
22 600
20 900
18 1500
16 2000
Typical Wiring Schematic for Energy Management Kit
41
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