Daikin Enfinity VFC - UNIT INSTALLATION; Operating Limits and Antifreeze Factors

unit installation
Operating Limits
Thisequipmentisdesignedforindoorinstallationonly.Shelteredlocationssuchasattics,garages,etc.,generally
willnotprovidesufcient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
Standard Range Units Geothermal Range Units
Cooling Heating Cooling Heating
Minimum Ambient Air 50°F(10°C) 50°F(10°C) 40°F(4°C) 40°F(4°C)
Rated Ambient 80°F(27°C) 70°F(21°C) 80°F(27°C) 70°F(21°C)
Maximum Ambient Air 100°F(38°C) 85°F(29°C) 100°F(38°C) 85°F(29°C)
Minimum Entering Air 50°F(10°C) 50°F(10°C) 50°F(10°C) 40°F(4°C)
Rated Entering Air 80/67°F(27°/19°C) 70°F(21°C) 80/67°F(27°/19°C) 70°F(21°C)
Maximum Entering Air 100/83°F(38/28°C) 80°F(27°C) 100/83°F(38/28°C) 80°F(27°C)
Table 3: Water limits
Water Limits
Standard Range Units Geothermal Range Units
Cooling Heating Cooling Heating
Minimum Entering Water 55°F(13°C) 55°F(13°C) 30°F(-1°C) 20°F(-6°C)
Normal Entering Water 85°F(29°C) 70°F(21°C) 77°F(25°C) 40°F(4°C)
Maximum Entering Water 110°F(43°C) 90°F(32°C) 110°F(43°C) 90°F(32°C)
Minimum GPM/Ton 1.5
Nominal GPM/Ton 3.0
Maximum GPM/Ton 4.0
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
10% 20% 30% 40% 50%
Cooling Capacity 0.9950 0.9920 0.9870 0.9830 0.9790
Heating Capacity 0.9910 0.9820 0.9770 0.9690 0.9610
Pressure Drop 1.0700 1.1300 1.1800 1.2600 1.2800
Table 5: Propylene Glycol
10% 20% 30% 40% 50%
Cooling Capacity 0.9900 0.9800 0.9700 0.9600 0.9500
Heating Capacity 0.9870 0.9750 0.9620 0.9420 0.9300
Pressure Drop 1.0700 1.1500 1.2500 1.3700 1.4200
Table 6: Methanol
10% 20% 30% 40% 50%
Cooling Capacity 0.9980 0.9720 – – –
Heating Capacity 0.9950 0.9700 – – –
Pressure Drop 1.0230 1.0570 – – –
Table 7: Ethanol
10% 20% 30% 40% 50%
Cooling Capacity 0.9910 0.9510 – – –
Heating Capacity 0.9950 0.9600 – – –
Pressure Drop 1.0350 0.9600 – – –
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