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

Environment
This equipment is designed for indoor installation only. Shel-
tered 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.

Operating Limits

Table 10: Air limits in °F (°C)
Air Limits
Minimum Ambient Air
1
Maximum Ambient Air
2
Minimum Entering Air
1
Common Design Entering Air
Maximum Entering Air
2
Minimum CFM/Ton
Maximum CFM/Ton
Table 11: Fluid limits
Fluid Limits
Minimum Entering Fluid
Common Design Entering Fluid
Maximum Entering Fluid
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. Geothermal 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

Cooling Capacity
Heating Capacity
Pressure Drop
Cooling Capacity
Heating Capacity
Pressure Drop
Cooling Capacity
Heating Capacity
Pressure Drop
Cooling Capacity
Heating Capacity
Pressure Drop
www.DaikinApplied.com
Standard Range Units
Cooling (DB/WB)
50°F/40°F (10°C/4°C)
100°F/85°F (38°C/29°C)
65°F/55°F (18°C/13°C)
75°F/63°F (24°C/17°C)
85°F/71°F (29°C/22°C)
Standard Range Units
Cooling
55°F (13°C)
85-90°F (29-32°C)
120°F (49°C)
15%
0.985
0.9825
1.04
Ethylene Glycol
0.9935
0.9865
1.10
Methanol
0.985
0.9825
1.04
Propylene Glycol
0.985
0.981
1.11
Units must be checked for water leaks upon initial
water system start-up. Water leaks may be a result of
mishandling or damage during shipping. Failure by the
installing contractor to check for leaks upon start-up of the
water system could result in property damage.
Heating Cooling (DB/WB)
50°F (10°C) 40°F/30°F (4°C/-1°C)
85°F (29°C) 100°F/85°F (38°C/29°C)
50°F (10°C) 65°F/55°F (18°C/13°C)
70°F (21°C) 75°F/63°F (24°C/17°C)
80°F (27°C) 85°F/71°F (29°C/22°C)
300
450
Heating
55°F (13°C) 30°F (-1°C)
70°F (21°C) 90°F (32°C)
90°F (32°C) 120°F (49°C)
1.5
3.0
4.0
Antifreeze % by weight
25%
Ethanol
–
–
0.9895
0.9795
1.16
–
–
–
0.975
0.9685
1.20
23
s a
ysteM
CAUTION
Geothermal Range Units
Heating
40°F (4°C)
85°F (29°C)
50°F (10°C)
70°F (21°C)
80°F (27°C)
Geothermal Range Units
Cooling Heating
20°F (-6°C)
35-60°F (1.5-16°C)
90°F (32°C)
35% 45%
–
–
0.985 0.981
0.973 0.965
1.22 1.27
–
–
–
0.965 0.955
0.952 0.936
1.31 1.40
Vertical Stack WSHP • IM 986-11
PPliCations
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–
–
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