Operating Limits; Antifreeze Correction Factors - Daikin Enfinity VFC Installation And Maintenance Manual

Operating Limits

This equipment is designed for indoor installation only. Sheltered locations such as attics, garages, etc., generally
will not provide sufficient protection against extremes in temperature and/or humidity, and equipment performance,
reliability, and service life may be adversely affected.
Table 2: Air limits in °F (°C)
Air Limits
Minimum Ambient Air
Rated Ambient
Maximum Ambient Air
Minimum Entering Air
Rated Entering Air
Maximum Entering Air
Table 3: Water limits
Water Limits
Minimum Entering Water
Normal Entering Water
Maximum Entering Water
Minimum GPM/Ton
Nominal GPM/Ton
Maximum GPM/Ton
Notes: 1. Maximum and minimum values may not be combined. If one value is at maximum or minimum, the other two
conditions may not exceed the normal condition for standard units. Extended range units may combine any two
maximum conditions, but not more than two, with all other conditions being normal conditions.
2. This is not a normal or continuous operating condition. It is assumed that such a start-up is for the purpose of
bringing the building space up to occupancy temperature.

Antifreeze Correction Factors

Table 4: Ethylene Glycol
Cooling Capacity
Heating Capacity
Pressure Drop
Table 5: Propylene Glycol
Cooling Capacity
Heating Capacity
Pressure Drop
Table 6: Methanol
Cooling Capacity
Heating Capacity
Pressure Drop
Table 7: Ethanol
Cooling Capacity
Heating Capacity
Pressure Drop
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Standard Range Units
Cooling
50°F (10°C)
80°F (27°C)
100°F (38°C)
50°F (10°C)
80/67°F (27°/19°C)
100/83°F (38/28°C)
Standard Range Units
Cooling
55°F (13°C)
85°F (29°C)
110°F (43°C)
10% 20%
0 .9950 0 .9920
0 .9910 0 .9820
1 .0700 1 .1300
10% 20%
0 .9900 0 .9800
0 .9870 0 .9750
1 .0700 1 .1500
10% 20%
0 .9980 0 .9720
0 .9950 0 .9700
1 .0230 1 .0570
10% 20%
0 .9910 0 .9510
0 .9950 0 .9600
1 .0350 0 .9600
Heating
50°F (10°C) 40°F (4°C)
70°F (21°C) 80°F (27°C)
85°F (29°C) 100°F (38°C)
50°F (10°C) 50°F (10°C)
70°F (21°C) 80/67°F (27°/19°C)
80°F (27°C) 100/83°F (38/28°C)
Heating
55°F (13°C) 30°F (-1°C)
70°F (21°C) 77°F (25°C)
90°F (32°C) 110°F (43°C)
1 .5
3 .0
4 .0
30%
0 .9870
0 .9770
1 .1800
30%
0 .9700
0 .9620
1 .2500
30%
–
–
–
30%
–
–
–
9 Enfinity Vertical Water Source Heat Pumps • IM 930-6
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Geothermal Range Units
Cooling Heating
40°F (4°C)
70°F (21°C)
85°F (29°C)
40°F (4°C)
70°F (21°C)
80°F (27°C)
Geothermal Range Units
Cooling Heating
20°F (-6°C)
40°F (4°C)
90°F (32°C)
40%
0 .9830 0 .9790
0 .9690 0 .9610
1 .2600 1 .2800
40%
0 .9600 0 .9500
0 .9420 0 .9300
1 .3700 1 .4200
40%
–
–
–
40%
–
–
–
50%
50%
50%
–
–
–
50%
–
–
–