Daikin AGZ 025D Operating & Maintenance Manual page 6

Table 4, Ethylene Glycol Factors for Models AGZ 140D to 190D
Freeze Point
% E.G.
o
F
10 26
20 18
30 7
40 -7
-28
50
Table 5, Propylene Glycol Factors for Models AGZ 140D to 190D
Freeze Point
% P.G.
o
F
10 26
20 19
30 9
40 -5
50 -27
Altitude Correction Factors
Performance tables are based at sea level.
Elevations other than sea level affect the
performance of the unit. The decreased air
density will reduce condenser capacity
consequently reducing the unit's performance.
For performance at elevations other than sea
level, refer to Table 6 and Table 7.
Evaporator Temperature Drop
Factors
Performance tables are based on a 10°F (5°C)
temperature drop through the evaporator.
Adjustment factors for applications with
temperature ranges from 6°F to 16°F (3.3°C to
8.9°C) are in Table 6 and Table 7.
Temperature drops outside this 6°F to 16°F
(3.3°C to 8.9°C) range can affect the control
system's capability to maintain acceptable
control and are not recommended.
6
Capacity Power
o
C
-3.3 0.994 0.998
-7.8 0.982 0.995
-13.9 0.970 0.992
-21.7 0.955 0.987
-33.3 0.939 0.983
Capacity Power
o
C
-3.3 0.988 0.996
-7.2 0.972 0.992
-12.8 0.951 0.987
-20.6 0.926 0.979
-32.8 0.906 0.974
AGZ 025D through 190D
Flow PD
1.038 1.101
1.063 1.224
1.095 1.358
1.134 1.536
1.184 1.755
Flow PD
1.019 1.097
1.035 1.201
1.059 1.351
1.095 1.598
1.142 2.039
The maximum water temperature that can be
circulated through the evaporator in a non-
operating mode is 100°F (37.8°C).
Fouling Factor
Performance tables are based on water with a
fouling factor of:
2
  
. 0 0001 ft hr F / BTU
per ARI 550/590-98.
As fouling is increased, performance
decreases. For performance at other than
0.0001 (0.0176) fouling factor, refer to Table 6
or Table 7.
Foreign matter in the chilled water
system will adversely affect the heat
transfer capability of the evaporator
and could increase the pressure drop
and reduce the water flow. Maintain
proper water treatment to provide
optimum unit operation.
2
 
or ( . 0 0176 m C / kW )
OMM 1166-1