![background image](http://html1.mh-extra.com/html/carrier/52m-performance-series/52m-performance-series_product-data_2561755034.webp)
34
TYPICAL WIRING SCHEMATIC FOR ENERGY
MANAGEMENT INTERFACE
FRONT DESK SWITCH PANEL
24-V
TRANSFORMER
(SEE NOTE 1)
PTAC #1
PTAC #2
PTAC #N
ROOM 100
ROOM 101
ROOM N
B
W
B
W
B
W
FIELD-SUPPLIED
LEGEND
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
AWG
ó
American Wire Gage
B
ó
Black
PTAC ó
Packaged Terminal Air Conditioner
W
ó
White
A07390
52M