Carrier 52S Architects And Engineers' Manual page 40

WIRING DIAGRAMS (cont)
ROOM 100
G W
PTAC #1
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.
24
22
20
18
16
FRONT DESK SWITCH PANEL
ROOM 101
G
W
PTAC #2
MAXIMUM LENGTH (ft)
400
600
900
1500
2000
Typical Wiring Schematic for Energy Management Kit
ROOM N
G
PTAC #N
40
24-V
TRANSFORMER
(SEE NOTE)
W