The model number denotes the following characteristics of the unit:
YD
YORK Dual Chiller
Air Cooled
Compressor Design Series
S = Screw
Unit Model
Class
A
S
410
Blank = Standard Efficiency
X
= High Efficiency
X
-
46
Y
Voltage Code:
D
Design Series
Type Start
Y = WYE-Delta
X = Across-the-Line
17 = 200-3-60
28 = 230-3-60
46 = 460-3-60
58 = 575-3-60