505429-JTG-L-0512
70
Johnson Controls Unitary Products
Additional Static Resistance (Continued)
CFM Static Pressure and Power-Altitude and
Temperature Corrections
The information below should be used to assist in application
of product when being applied at altitudes at or exceeding
1000 feet above sea level.
The air flow rates listed in the standard blower performance
tables are based on standard air at sea level. As the altitude
or temperature increases, the density of air decreases. In
order to use the indoor blower tables for high altitude
applications, certain corrections are necessary.
A centrifugal fan is a "constant volume" device. This means
that, if the rpm remains constant, the CFM delivered is the
same regardless of the density of the air. However, since the
air at high altitude is less dense, less static pressure will be
generated and less power will be required than a similar
application at sea level. Air density correction factors are
shown in Altitude Factors Table and Temperature Correction
Figure.
Model
CFM
Hot Water Coil
Steam Coil
J25NC
8000
0.06
0.11
9000
0.07
0.14
10000
0.08
0.17
11000
0.09
0.20
12000
0.10
0.23
Содержание Duct R-410A
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Страница 84: ...505429 JTG L 0512 84 Johnson Controls Unitary Products Typical J20YC Wiring Diagram ...
Страница 85: ...505429 JTG L 0512 Johnson Controls Unitary Products 85 Typical J25YC Wiring Diagram ...
Страница 86: ...505429 JTG L 0512 86 Johnson Controls Unitary Products Typical J15 20YD Wiring Diagram ...
Страница 87: ...505429 JTG L 0512 Johnson Controls Unitary Products 87 Heat Pump Units Typical J07PC Wiring Diagram ...
Страница 88: ...505429 JTG L 0512 88 Johnson Controls Unitary Products Typical J10PC Wiring Diagram ...
Страница 89: ...505429 JTG L 0512 Johnson Controls Unitary Products 89 Typical J15 20PC Wiring Diagram ...
Страница 90: ...505429 JTG L 0512 90 Johnson Controls Unitary Products Typical J15 20PD Wiring Diagram ...
Страница 91: ...505429 JTG L 0512 Johnson Controls Unitary Products 91 Air Handling Units Typical J07NC Wiring Diagram ...
Страница 95: ...505429 JTG L 0512 Johnson Controls Unitary Products 95 Typical J25NC Wiring Diagram ...