York MILLENIUM YCAS Series, Installation Operation & Maintenance, Page: 43 / 156

43
YORK INTERNATIONAL
FORM 201.18-NM6
ETHYLENE GLYCOL
PROPYLENE GLYCOL
A
A
B
B
C
C
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
-10 -8 -6 -4 -2 0 2 4 6 8
-10 -8 -6 -4 -2 0 2 4 6 8
50%
40%
30%
20%
10%
50%
40%
30%
20%
10%
˚C
˚C
TECHNICAL DATA
GLYCOL CORRECTION FACTORS
The cooler is designed in accordance with ARI-590-
92 which allows for an increase in pressure drop of up
to 15% above the design value given above. Debris in
the water may also cause additional pressure drop.
When using glycol solutions, pressure drops are higher
than with water (see correction factors to be applied
when using glycol solutions). Special care must be
taken not to exceed the maximum allowed.
A = Correction Factor
B = Mean Temperature through Cooler
C = Concentration W/W
LD03504
COOLER WATER PRESSURE DROP
(SI UNITS)
FIG. 14 – FLOW RATE AND PRESSURE DROP CHART
FIG. 15 – GLYCOL CORRECTION FACTORS
FLOW RATE AND PRESSURE DROP CHART
LD05894
7
Excessive flow, above the max l/s, will
damage the evaporator.
MODEL NUMBER YCAS COOLER
0283, 0303, 0323, 0343 A
A
1 10 100
1
100
10
1000
WATER FLOW (l/s)
COOLER WATER PRESSURE DROP
PRESSURE DR
OP (kP
a)