Page 1
PRODUCT DATA &
SPECIFICATIONS
Bulletin K70-KDX-PDS-11
1064639
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Type KDX
Direct Expansion
Coils
For Cooling & Dehumidifying
Refrigerants R22, R404A & R134a
KeepRite
Coil T ype (Direct Expansion)
Fin Series (70, 80, 100 or 120)
NOMENCLATURE
K DX 10 4 - 30 X 72 R-22
Refrigerant Type
(R-22 or R404A)
Nominal Tube Length
“W” Dimension
Rows Deep
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DIRECT EXPANSION COILS
TYPE KDX
SIZES AND MODELS FOR EVERY APPLICATION
Direct Expansion Type KDX Coils are engineered and
designed to deliver the maximum possible heat transfer
efficiency under all operating conditions. KeepRite coils
are manufactured using only the highest quality materials
and with the most modern manufacturing facilities
available. Each KeepRite Coil is inspected and tested
under rigid quality control standards to offer you the finest
quality Coil designed for long life and top performance.
A variety of fin selections make it possible to meet the
sensible and total requirements more accurately and
economically.
Select standard KeepRite Direct Expansion Coils
from any combination of the following:
1. Series70, 80, 100 and 12O Fin spacings.
2. From 2 through 10 rows deep
3. From 6" through 36" high face (3" increments).
4. From 6" through 120" nominal tube length.
5. Coils for R-22 and R-404A.
RIPPLE FIN CONSTRUCTION
All KeepRite Coils feature the Ripple Fin Coil
Construction to provide a more efficient transfer surface
of superior strength and durability. Rippled Aluminum
fins produce a rippled air flow pattern throughout the coil
creating the maximum air turbulence necessary for
efficient heat transfer. Copper tubing is mechanically
expanded into the Rippled Aluminum fins, making
positive, permanent metal to metal contact for durability
STAGGERED TUBE DESIGN
and peak efficiency. Wide, full fin collars drawn in the fin
stock not only provide accurate control of the fin spacing,
but also completely cover the tube for the greatest heat
transfer efficiency and coil protection.
Another important feature of KeepRite Coils is the
Staggered Tube design which offers an intimate and
prolonged contact of the air and cooling surface.
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Page 3
TABLE OF CONTENTS
SIZES AND MODELS............................................................2
Coil nomenclature .............................................................. 2
FEATURES ...........................................................................3
COOL SPECIFICATIONS .....................................................4
GENERAL FORMULAS.........................................................4
COIL SELECTION
Wet bulb depression factor ............................................... 5
General considerations ..................................................... 5
Coil sizes, Table 1 ............................................................. 6
DEHUMIDIFYING COIL SELECTION
Example problem No. 1 ..................................................... 7
Example problem No. 2 ..................................................... 8
Example problem No. 3 ..................................................... 9
TOTAL HEAT, Table 2.........................................................10
CONVERSION FACTORS - AIR VOLUME
Temperature, Figure 1....................................................11
Altitude, Figure 2.............................................................11
DIRECT EXPANSION COIL RATINGS
For R-12, Table 3...................................................12 to 20
For R-22, Table 4...................................................21 to 29
DEHUMIDIFYING COIL
Basic rating curves for R-12, Figure 3............................30
Velocity and row correction factors for R-12, Figure 4...30
Fin series total capacity correction factors, Table 5.......30
Basic rating curves for R-22, Figure 5............................31
Velocity and row correction factors for R-22, Figure 6...31
Fin series total capacity correction factors, Table 6.......31
Wet bulb depression factors, Figure 7...........................32
SENSIBLE COOLING COIL SELECTION
Example problem No. 4...................................................33
SENSIBLE COOLING COIL
Basic rating curves for R-12, Figure 8............................34
Velocity and row correction factors for R-12, Figure 9...34
Fin series sensible total capacity correction factors,
Table 7..........................................................................34
Basic rating curves for R-22, Figure 10..........................35
Velocity and row correction factors for R-22, Figure 11..35
Fin series sensible capacity correction factors, Table 8.35
COIL AIR FRICTION
Dry coils, Figure 12.........................................................36
Air friction factor..............................................................36
Air friction. correction factors, Table 9.............................36
CAPACITY REDUCTION APPLICATIONS ........................36
COIL DIMENSIONS..............................................................37
TYPICAL SPECIFICATION..................................................38
“TYPE KDX COIL” OFFERS THESE
FEATURES
STAGGERED TUBES
Experience and KeepRite tests prove conclusively that
staggered tubes produce at least 5% higher capacity than
parallel tubes.
RIPPLED FINS
Experience and KeepRite tests prove conclusively that
KeepRite fins which ripple through fin depth produce a
minimum of 5% higher performance than flat plate fins.
HIGHER HEAT TRANSFER RATE
New KeepRite combination of staggered tubes and modified
rippled fins, produces the necessary turbulence to interrupt the
insulating boundary layer film, while retaining the intimate and
prolonged contact between air and the heat exchanger surface.
NON FERROUS HEADERS
Heavy wall seamless copper headers and copper tubes
eliminate leaks which could occur from unequal expansion rates
of dissimilar materials as well as from the possibility of galvanic
corrosion. Natural resistance of copper to corrosion means longer
coil life.
FLOW CIRCUITING
All coils are counterflow circuited and equipped with pressure
type distributors to insure equal distribution of refrigerant to each
circuit. Sufficient circuits are provided to insure equal,
distribution of refrigerant to each circuit. Circuiting for facecontrol and row-control is also available.
FULL FIN COLLARS
Wide, smooth die-formed fin collars provide accurate fin spacing
and completely cover the coil tube for maximum contact area
and highest heat transfer.
FULL FACE HEIGHT-Without Air By-Pass
POSITIVE PERMANENT TUBE FIN BOND
Mechanical pressure expansion of the tube into the fin provides
a positive and permanent metal to metal contact for durability
and peak performance.
UNMATCHED VARIETY OF STANDARD COILS
Provides practically unlimited flexibility in selection of coils to
more accurately meet load requirements.
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Page 4
COIL SPECIFICATIONS
PRIMARY SURFACE
5/8" round seamless copper tubes are mechanically
expanded, offering positive, permanent, metal to metal
contact for efficient heat transfer.
SECONDARY SURFACE
Rippled, plate type aluminum fins create the maximum air
turbulence necessary to obtain efficient transfer of heat.
Wide, full, fin collars, smoothly drawn completely cover the
tubes increasing the contact area.
OPERATING CONDITIONS
Complete core rated at 200 psig working pressure.
CIRCUITING
Each Direct Expansion Coil is circuited for low pressure
drop with sufficient vapor velocity to insure maximum heat
transfer. All circuits are of equal length and all carry equal
loads.
CASING
Die formed heavy gauge casings are formed from
Continuous Galvanized Steel. Three eighths inch bolt
holes on 3” centers are provided in mounting frames.
TESTS
Complete Coil assembly is tested at 315 psig air under
warm water. Dehydrated by heating and circulating hot
dry air (-40°F, dew-point) throughout the coil and then
sealed.
SPECIAL REFRIGERANTS
For use with special refrigerants consult the factory.
SPECIAL PURPOSE COILS
Protective coatings, special materials, and fin spacings
to meet your individual needs are available for industrial
and process applications
BRAZING
All Core joints are made with copper brazing alloys.
RETURN BENDS
5/8” O.D. round seamless copper tubing.
HEADER END CAPS
Heavy gauge copper.
LIQUID DISTRIBUTORS
Pressure type brass distributors with accurately spaced
drilled outlets are furnished and mounted on each coil to
insure equal distribution of refrigerant to all circuits.
Expansion valve may be field installed and coil can be
mounted in any position.
CONNECTIONS
Male Sweat type. Liquid connections are brass and
suction connections are copper.
CERTIFIED DRAWINGS WILL BE FURNISHED ON REQUEST
GENERAL FORMULAS
1. TOTAL BTUH
Total Btuh = 4.5 X (total heat ent air total heat lvg air)
Where: 4.5 = (density std air) X (min
.075 = density std air in lbs/cu ft
60 = min/ hr
2. SENSIBLE BTUH
Sensible Btuh = 1.09 X cfm X (ent air dry bulb - lvg air
dry bulb)
Where: 1.09 = (sp ht air at 70 F) X (min/hr) X
(density std air)
.24 = sp ht air at 70 F
60 = min/hr
.075 = density std air in lbs/cu ft
3. LEAVIND AIR DRY BULB TEMPERATURE
a. Lvg air dry bulb = ent air dry bulb -
1.09 X cfm
b. Lvg air dry bulb = lvg air wet bulb + (wet bulb depression
factor) X (initial wet bulb depression)
sensible Btuh
4. FACE AREA SQ. FT.
5. FACE VELOCITY F.P.M.
6 . SENSIBLE TOTAL RATIO
7. TONS PER SQUARE FOOT OF FACE AREA
8. INITIAL WET BULB DEPRESSION
Initial wet bulb depression = (ent air dry bulb) (ent air wet bulb)
cfm
FA =
face velocity (fpm)
cfm
FV =
face area (sq ft)
S/T ratio =
total Btuh
Tons/sq ft =
sensible Btuh
total Btuh
face area (sq ft) X 12,000
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Page 5
COIL SELECTION
WET BULB DEPRESSION FACTOR
Since both sensible and latent heat transfer, are
occurring simultaneously between the surface of a
dehumidifying coil and the air passing over it, some coil
performance factor which establishes the relationship
between these two modes of heat transfer is required.
For this purpose KeepRite employs the wet bulb
depression factor which has the general acceptance of
the finned tube coil industry.
The wet bulb depression factor is the ratio of the
leaving air to entering air wet bulb depressions and is
expressed as follows:
Wet Bulb Depression
Factor (WBDF) =
Entering Wet Bulb Depression
= Lvg. Air D.B. - Lvg. Air W.B. Temp.
Lvg. Air D.B. - Ent. Air W.B. Temp.
For the example illustrated below, the Wet Bulb
Depression Factor is:
WBDF =
61°F - 58°F 3
80°F - 67°F = 13
Leaving Wet - Bulb Depression
= .231
laboratory tests of each particular coil surface design. The
wet bulb depression factor does not apply to dry surface
cooling coils and is recommended for application only where
the sensible to total heat ratio is 0.9 or less. When the
sensible to total ratio is greater than 0.9, the fin surface is
essentially dry and the coil selection can be based on dry
surface to handle the total load.
Curves giving the wet bulb depression factor for
KeepRite Type KDX Coils are shown on page 33.
SATURATION CURVE
ENTERING
67°F WET BULB
TEMP.
LEAVING
58°F WET BULB
TEMP.
LEAVING
DEPRESSION
W.B.
AIR CONDITION
LEAVING COIL
AIR CONDITION
ENTERING COIL
ENTERING W.B.
DEPRESSION
Since the wet bulb depression factor describes a heat
transfer relationship on the fin side of a coil only, it varies
with the air side heat transfer performance, the amount
of heat transfer surface and with the air velocity.
The WB depression factor is determined by
GENERAL CONSIDERATIONS IN COIL SELECTION
The cooling process should always be plotted on a
psychrometric chart to be sure that the desired
psychrometric changes are feasible.
When selecting a coil it should be remembered that if the
required leaving wet bulb temperature is met, the total
load is satisfied and vice versa. Also, that when the,
required leaving Dry Bulb temperature is met, the
sensible load requirement is satisfied.
A coil must meet both the total load and the sensible
load requirement in order to achieve the conditions
desired in the space to be cooled. Normally the total
load capacity is checked first, however, the leaving dry
bulb should always be checked. When the sensible/
total ratio is low, the coil selection is normally controlled
by the total load even though the sensible cooling may
exceed the requirement. In some cases if the leaving
dry bulb temperature is too low, reheat may be required.
58 61 67 80
When the S/T ratio is high the coil selection is normally
controlled by the sensible cooling even though the total
load may exceed that required by an appreciable amount.
If the total capacity far exceeds the requirement, a recheck
on the refrigeration system balance should be made to be
sure sufficient system capacity is available.
MATCHING SENSIBLE-LATENT REQUIREMENTS - In
order to more accurately meet the sensible loads and the
total loads. The 70 and 80 fin series coils are
recommended for the lower S/T ratios, and the 100 and
120 fin series for the higher S/T ratios. For normal S/T
ratios fin series 80 and 100 are recommended.
When the refrigerant temperature is low and possible
frosting on the coil, surfaces may occur, fin series 70 is
recommended.
For selecting coils for sensible cooling only (dry coil) see
page 33.
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Page 6
COIL SELECTION
COIL SIZES
TABLE 1 - COIL SIZES - NOMINAL FACE AREA IN SQ. FT.
"W" NOMINAL TUBE LENGTH - NTL - (INCHES)
INCHES 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78
6 .50 .62 .75 .87 1.00 1.13 1.25 1.38 1.50 1.63 1.75 1.88 2.0 2.1 2.2 2.4 2.5 2.6 2.7 2.9 3.0
9 .75 .94 1.12 1.31 1.50 1.69 1.87 2.06 2.25 2.44 2.62 2.81 3.0 3.2 3.4 3.6 3.7 3.9 4.1 4.3 4.5
12 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 4.0 4.3 4.5 4.8 5.0 5.3 5.5 5.8 6.0 6.3 6.5
15 1.56 1.87 2.19 2.50 2.81 3.12 3.44 3.75 4.06 4.37 4.68 5.0 5.3 5.6 5.9 6.2 6.6 6.9 7.2 7.5 7.8 8.1
18 2.25 2.62 3.00 3.37 3.75 4.12 4.50 4.87 5.25 5.62 6.0 6.4 6.7 7.1 7.5 7.9 8.2 8.6 9.0 9.4 9.7
21 3.06 3.50 3.94 4.37 4.82 5.25 5.69 6.12 6.56 7.0 7.4 7.9 8.3 8.7 9.2 9.6 10.1 10.5 10.9 11.4
24 4.00 4.50 5.00 5.50 6.00 6.50 7.00 7.50 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0
27 5.06 5.62 6.19 6.75 7.32 7.87 8.44 9.0 9.6 10.1 10.7 11.2 11.8 12.4 12.9 13.5 14.1 14.6
30 6.25 6.88 7.50 8.12 8.75 9.37 10.0 10.6 11.2 11.9 12.5 13.1 13.7 14.4 15.0 15.6 16.2
33 7.56 8.25 8.94 9.62 10.30 11.0 11.7 12.4 13.1 13.7 14.4 15.1 15.8 16.5 17.2 17.9
36 9.00 9.75 10.50 11.20 12.0 12.7 13.5 14.2 15.0 15.7 16.5 17.2 18.0 18.7 19.5
"W"
INCHES
Type KDX coils over 120” N.T.L. are considered special.
Consult Local KeepRite Refrigeration Sales Office for coils other than sizes shown above
81 84 87 90 93 96 99 102 105 108 111 114 117 120 123 126 129 132 135 138 141 144
12 6.8 7.0 7.3 7.5 7.8 8.0 8.3 8.5 8.8 9.0 9.3 9.5 9.8 10.0
15 8.4 8.7 9.1 9.4 9.7 10.0 10.3 10.6 10.9 11.2 11.6 11.9 12.2 12.5
18 10.1 10.5 10.9 11.2 11.6 12.0 12.4 12.7 13.1 13.5 13.9 14.2 14.6 15.0 15.4 15.8
21 11.8 12.2 12.7 13.1 13.6 14.0 14.4 14.9 15.3 15.7 16.2 16.6 17.1 17.5 17.9 18.4 18.8 19.3
24 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 17.5 18.0 18.5 19.0 19.5 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 24.0
27 15.2 15.7 16.3 16.9 17.4 18.0 18.6 19.1 19.7 20.2 20.8 21.4 21.9 22.5 23.1 23.6 24.2 24.8 25.3 25.9 26.4 27.0
30 16.9 17.5 18.1 18.7 19.3 20.0 20.6 21.2 21.9 22.5 23.1 23.7 24.4 25.0 25.6 26.2 26.9 27.5 28.1 28.8 29.4 30.0
33 18.6 19.2 19.7 20.6 21.3 22.0 22.7 23.4 24.0 24.7 25.4 26.1 26.8 27.5 28.2 28.9 29.6 30.2 30.9 31.6 32.3 33.0
36 20.2 21.0 21.8 22.5 23.2 24.0 24.7 25.5 26.2 27.0 27.7 28.5 29.2 30.0 30.7 31.5 32.2 33.0 33.7 34.5 35.2 36.0
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Page 7
DEHUMIDIFYING COIL SELECTION
EXAMPLE PROBLEM NO. 1
(Showing Use of R-12 Direct Selection Table No. 3)
GIVEN:
Entering Air Dry Bulb.......................................................................................................94°F
Entering Air Wet Bulb.......................................................................................................74°F
CFM (Std Air)...............................................................................................................13,600
Total BTUH Required................................................................................................691,000
Sensible BTUH Required..........................................................................................454,000
Refrigerant Temperature.................................................................................................40°F
Refrigerant......................................................................................................................R-12
Maximum Face Velocity..........................................................................................510 FPM
Maximum Height of Coil-Over Casing....................................................................37 Inches
SOLUTION
1. SENSIBLE TOTAL RATIO
S/T ratio =
total Btuh 691,000
As the S/T ratio is below .90 the direct selection tables can be
used.
sensible Btuh 454,000
= .657 (Formula 6)
6. REQUIRED LEAVING DRY BULB TEMPERATURE
Req’d lvg dry bulb = ent dry bulb -
1.09 X cfrn
109 X 13,600
= 94 - 30.6 = 63.4 F (Formula 3a)
= 94 -
454,000
sensible Btuh
2. MINIMUM FACE AREA REQUIRED
cfm
FA =
face velocity 510
=
13,600
= 26.7 sq. ft. (Formula 4)
3. PHYSICAL SIZE
From Table 1, Page 6 select a coil that has a face area equal
to, or greater than 26.7 sq ft and not exceeding the 37”
overall height specified. (See Page 37 for casing
dimensions.)
For the example problem we have assumed that the correct
selection is a 33 X 117 coil with 26.8 sq ft of face area.
4. ACTUAL FACE VELOCITY
FV (actual) =
face area 26.8
In using the direct selection tables a face velocity of 500 fpm
can be used with negligible error. In critical cases
interpolation may be necessary.
cfm 13,600
= 508 fpm (Formula 5)
5. TONS PER SQUARE FOOT OF FACE AREA
REQUIRED
Tons/sq ft =
face area X 12,000 26.8 X 12,000
total Btuh
691,000
=
(Formula 7)
= 2.15
7. COIL SELECTION
Refer to the 40°F refrigerant temperature, 74°F entering air wet
bulb section of the R-12 direct selection table (Table 3, Page 17).
Enter this section at 500 fpm and proceed down to 2.17 tons/sq
ft. This meets the 2.15 tons/sq ft requirements. Reading to the
left, this is a model 104 coil. The leaving air wet bulb, immediately
to the right of the 2.17 tons/sq ft, is 59.6 F.
8. LEAVING AIR DRY BULB FOR 4 ROW 100 FIN
SERIES COIL
Lvg air dry bulb = Lvg air wet bulb + (wet bulb depression
factor) X (initial wet bulb depression)
(Formula 3b)
= 59.6 + (.09 X 20) = 59.6 +1.8° = 61.4° D.B.
Where: .09 = wet bulb depression factor for 100 fin series,
500 fpm and 4 rows deep (Fig. 7C Page 32)
20 = 94-74 = initial wet bulb depression (Formula 8)
The leaving air dry bulb is 61.4°F which meets 63.4°F calculated
in Step 6 and will satisfy the sensible cooling requirements.
The final selection is a “KDX104- 33 X 117” R-12 DX Coil.
9. ACTUAL CAPACITY OF COIL SELECTED
Total Btuh = (tons/sq ft) X (face area) X 12,000 (Formula 7)
= 2.17 X 26.8 X 12,000 = 697,000
Sensible Btuh = 1.09 X cfm X (ent air dry bulb lvg air dry bulb) (Formula 2)
= 1.09 X 13,600 X (94 - 61.4)
= 484,000
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Page 8
DEHUMIDIFYING COIL SELECTION
EXAMPLE PROBLEM NO. 2
(Showing Use of R-22 Direct Selection Table No. 4)
GIVEN:
Entering Air Dry Bulb.......................................................................................................84 F
Entering Air Wet Bulb......................................................................................................68 F
CFM (Std Air).................................................................................................................3090
Leaving Air Dry Bulb.....................................................................................................54.0 F
Leaving Air Wet Bulb....................................................................................................53.7 F
Refrigerant Temperature.................................................................................................45 F
Refrigerant......................................................................................................................R-22
Maximum Face Velocity...........................................................................................550 FPM
1. TOTAL BTUH REQUIRED
Total Btuh = 4.5 X cfm X (total heat difference) (Formula 1)
Total heat ent air @ 68.0°F wet bulb = 32.42 Btu/lb
Total heat lvg air @ 53.7°F wet bulb = 22.44
Total heat difference = 9.98 Btu/lb
(Table 2, Page 10)
Total Btuh = 4.5 X 3090 X 9.98 = 138,800
2. SENSIBLE BTUH REQUIRED
Sensible Btuh = 1.09 X cfm X (ent air dry bulb - lvg air
dry bulb) (Formula 2)
= 1.09 X 3090 X (84 - 54)
= 1.09 X 3090 X 30 = 101,040
3. SENSIBLE TOTAL RATIO
S/T ratio =
total Btuh 138,800
As the S/T ratio is below .90 the direct selection tables can
be used
4. MINIMUM FACE AREA REQUIRED
FA =
face Velocity 500
5. PHYSICAL DIMENSION OF COIL FACE
From Table 1, Page 6 select a coil that has a face area
equal to, or greater than 5.62 sq ft.
For this example assume that the correct selection is an
18 X 45 coil with 5.62 sq ft of face area.
6. TONS PER SQUARE FOOT OF FACE AREA REQUIRED
Tons/sq ft =
face area X 12,000 5.62 X 12,000
sensible Btuh = 101,040
cfm = 3090
total Btuh = 138,800
= 2.06 (Formula 7)
= .728 (Formula 6)
= 5.62 sq ft (Formula 4)
- 8 -
7. PRELIMINARY COIL SELECTION
Refer to the 45°F refrigerant temperature, 68°F entering
air wet bulb section of the R-22 direct selection table
(Table 4. Page 28). Enter this section at 550 fpm and
proceed down to 2.06 tons/sq ft. This exactly meets the
load requirements. Reading to the left, this is a model 106
coil.
The leaving air wet bulb, immediately to the right of the
2.06 tons,/sq ft, is 53.7 F.
8. LEAVING AIR DRY BULB
Lvg air dry bulb = (Ivg air wet bulb) + (wet bulb
depression factor) X (initial wet bulb
depression)
= 53.7 + (.031 X 16) = 53.7 + 0.5
= 54.2 F (Formula 3b)
Where: .031 = wet bulb depression factor for 100 fin
series, 550 fpm and 6 rows deep
(Figure 7c, Page 32)
16 = 84 - 68 = initial wet bulb depression
(Formula 8)
Since the lvg air dry bulb is above the 54.0°F required, a
model 126 coil should be selected.
9. RESELECTION - DETERMINE CAPACITY OF A MODEL
126 COIL
Return to Table 4, Page 28. The tons/ /sq ft for a model
126 coil is 2.16 and the leaving air wet bulb is 52.9°F.
Both exceed the requirements.
Determine the leaving air dry bulb as follows:
Lvg air dry bulb = 52.9 + (0.25 X 16) = 52.9 + .4 = 53.3°F
Where: .025 = wet bulb depression factor for 120 fin
series, 550 fpm and 6 rows deep
(Figure 7d, Page 32)
This is below the required 54.0°F.
Therefore, the final selection is a KDX 126 - 18"X 45"
R-22 DX Coil.
Page 9
DEHUMIDIFYING COIL SELECTION
EXAMPLE PROBLEM NO. 3
(Showing Use of the Basic Rating Curves-Pages 24 and 25)
GIVEN:
Entering Air Dry Bulb.......................................................................................................60°F
Entering Air Wet Bulb......................................................................................................58°F
CFM (Std Air)..................................................................................................................2000
Total BTUH Required..................................................................................................64,250
Sensible BTUH Required............................................................................................31,000
Refrigerant Temperature.................................................................................................36°F
Refrigerant......................................................................................................................R-22
Maximum Face Velocity...........................................................................................450 FPM
1 . SENSIBLE TOTAL RATIO
S/T ratio =
total Btuh 64,250
As S/T ratio is below .90 the basic rating curves on page
31 can be used.
2. MINIMUM FACE AREA REQUIRED
FA =
face velocity 450
3. PHYSICAL SIZE
From Table 1, Page 6 select a coil that has a face area
equal to, or greater than 4.45 sq ft.
For this example assume that the correct selection is an
18 X 36 coil with 4.5 sq ft of face area. This is close
enough to 4.45 sq ft to use 450 fpm.
4. TONS PER SQUARE FOOT REQUIRED
Tons/sq ft =
face area X 12,000 4.5 X 12,000
(Formula 7)
5. BASE RATING
Turn to the R-22 Base Rating Curves (Figure 5, Page 25).
The base rating for 58 F entering air wet bulb and 36°F
refrigerant temperature is 1.19 tons/sq ft.
6. VELOCITY AND ROW CORRECTION FACTOR
REQUIRED
In view of the low S/T ratio a series 70 coil will be
checked.
VR correction factor =
= 1.19
1.19 X .93
Where: .93 = fin correction factor for 70 fin series (Table 6,
sensible Btuh
cfm
=
total Btuh
Page 31)
31,000
=
2000
= 4.45 sq ft (Formula 4)
tons/sq ft
(base rating) X (fin correction factor)
= .482 (Formula 6)
64,250
=
= 1.075
= 1.19
8. ACTUAL TOTAL BTUH OF 5 ROW 70 FIN SERIES COIL
Total Btuh = 12,000 X (base rating) X (face area) X (VR
corr fact.) X (fin series corr fact.)
= 12,000 X 1.19 X 4.5 X 1.088 X .93 = 65,020
This meets the total load requirements.
9. LEAVING AIR WET BULB FOR 5 ROW 70 FIN SERIE COIL
Total Btuh = 4.5 X cfm X (total heat difference) (Formula 1)
Total heat difference =
Total heat ent air @ 58°F wet bulb = 25.12 Btu/lb
Total heat difference = 7.22
Total heat lvg air = 17.90 Btu/lb
Lvg air wet bulb = 45.5°F
10. LEAVING AIR DRY BULB FOR 5 ROW 70 FIN SERIES
COIL
Lvg air dry bulb = (Lvg air wet bulb) + (wet bulb depression
factor) X (initial wet bulb depression)
(Formula 3b)
= 45.5 + (.079 X 2) = 45.5 + .2 = 45.7
Where: .079 = wet bulb depression factor for 70 fin series,
450 fpm and 5 rows deep (Fig. 7a, Page 32)
2 = 60-58 = initial wet bulb depression (Formula 8)
11. SENSIBLE BTUH OF 5 ROW 70 FIN SERIES COIL
Sensible Bruh = 1.09 X cfm X (ent air dry bulb-lvg air dry
bulb) (Formula 2)
= 1.09 X 2000 X (60-45.7)
= 1.09 X 2000 X 14.3 = 31,174
total Btuh = 65,020
4.5 X cfm 4.5 X 2000
(Table 2, Page 10)
= 7.22 Btu/lb
7. ROWS DEEP REQUIRED
Turn to the R-22 Velocity and Row Correction Factor
Curves (Figure 6, Page 31). At the required 1.075 velocity
and row correction factor and 450 fpm, a 5 row 70 fin series
coil will be required. This coil has an actual velocity and
row correction factor of 1.088.
12. FINAL COIL SELECTION
The final coil selected is a KDX75-18"X36" R-22 DX Coil
A KDX124-18"X36" Coil would also meet requirements;
however, it exceeds the total load and the sensible load by
a wide margin.
- 9 -
Page 10
TOTAL HEAT
TABLE 2 - BTU CONTENT OF 1 LB. OF DRY AIR WITH WATER VAPOR REQUIRED
FOR COMPLETE SATURATION†
(Standard Atmospheric Pressure 29.921” HG.)
WET
BULB
°F. *
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
.0 .1 .2 .3 .4 .5 .6 .7 .8 .9
13.01
13.44
13.87
14.32
14.77
15.23
15.70
16.17
16.66
17.15
17.65
18.16
18.68
19.21
19.75
20.30
20.86
21.44
22.02
22.61
23.22
23.84
24.48
25.12
25.78
26.46
27.15
27.85
28.57
29.31
30.06
30.83
31.62
32.42
33.25
34.09
34.95
35.83
36.74
37.66
38.61
39.57
40.57
41.58
42.62
43.69
44.78
45.90
47.04
48.22
49.43
13.05
13.48
13.92
14.36
14.82
15.28
15.74
16.22
16.71
17.20
17.70
18.21
18.73
19.26
19.81
20.36
20.92
21.49
22.08
22.68
23.28
23.90
24.54
25.19
25.85
26.53
27.22
27.92
28.64
29.38
30.14
30.91
31.70
32.50
33.33
34.18
35.04
35.92
36.83
37.75
38.71
39.67
40.67
41.68
42.73
43.80
44.89
46.01
47.16
48.34
49.55
13.09
13.52
13.96
14.41
14.86
15.32
15.79
16.27
16.75
17.25
17.75
18.26
18.79
19.32
19.86
20.41
20.98
21.55
22.14
22.74
23.34
23.97
24.61
25.25
25.92
26.60
27.29
27.99
28.72
29.46
30.21
30.99
31.78
32.59
33.42
34.26
35.13
36.01
36.92
37.85
38.80
39.77
40.77
41.79
42.83
43.91
45.00
46.13
47.28
48.46
49.68
13.14
13.57
14.01
14.45
14.91
15.37
15.84
16.32
16.80
17.30
17.80
18.32
18.84
19.37
19.92
20.47
21.03
21.61
22.20
22.80
23.41
24.03
24.67
25.32
25.98
26.67
27.36
28.07
28.79
29.53
30.29
31.07
31.86
32.67
33.50
34.35
35.21
36.10
37.02
37.94
38.90
39.87
40.87
41.89
42.94
44.02
45.12
46.24
47.39
48.58
49.80
TENTHS OF DEGREES
13.18
13.61
14.05
14.50
14.95
15.42
15.89
16.37
16.85
17.35
17.85
18.37
18.89
19.43
19.97
20.52
21.09
21.67
22.26
22.86
23.47
24.10
24.74
25.38
26.05
26.74
27.43
28.14
28.87
29.61
30.37
31.15
31.94
32.75
33.59
34.43
35.30
36.19
37.11
38.04
39.00
39.98
40.97
42.00
43.05
44.13
45.23
46.36
47.51
48.70
49.92
13.22
13.66
14.10
14.54
15.00
15.46
15.93
16.41
16.90
17.40
17.91
18.42
18.95
19.48
20.03
20.58
21.15
21.73
22.32
22.92
23.53
24.16
24.80
25.45
26.12
26.80
27.50
28.21
28.94
29.68
30.44
31.22
32.02
32.83
33.67
34.52
35.39
36.28
37.20
38.13
39.09
40.07
41.07
42.10
43.15
44.23
45.34
46.47
47.63
48.82
50.04
13.27
13.70
14.14
14.59
15.05
15.51
15.98
16.46
16.95
17.45
17.96
18.47
19.00
19.53
20.08
20.64
21.21
21.79
22.38
22.98
23.59
24.22
24.86
25.52
26.19
26.87
27.57
28.28
29.01
29.76
30.52
31.30
32.10
32.92
33.75
34.61
35.48
36.38
37.29
38.23
39.19
40.17
41.18
42.20
43.26
44.34
45.45
46.58
47.75
48.95
50.17
13.31
13.74
14.19
14.63
15.09
15.56
16.03
16.51
17.00
17.50
18.01
18.52
19.05
19.59
20.14
20.69
21.26
21.84
22.44
23.04
23.65
24.29
24.93
25.58
26.26
26.94
27.64
28.35
29.09
29.83
30.60
31.38
32.18
33.00
33.84
34.69
35.57
36.47
37.38
38.32
39.28
40.27
41.28
42.31
43.37
44.45
45.56
46.70
47.87
49.07
50.29
13.35
13.79
14.23
14.68
15.14
15.60
16.08
16.56
17.05
17.55
18.06
18.58
19.10
19.64
20.19
20.75
21.32
21.90
22.50
23.10
23.72
24.35
24.99
25.65
26.32
27.01
27.71
28.43
29.16
29.91
30.68
31.46
32.26
33.08
33.92
34.79
35.65
36.56
37.48
38.42
39.38
40.37
41.38
42.41
43.48
44.56
45.68
46.81
47.98
49.19
50.41
13.39
13.83
14.27
14.73
15.18
15.65
16.12
16.61
17.10
17.60
18.11
18.63
19.16
19.70
20.25
20.81
21.38
21.96
22.56
23.16
23.78
24.42
25.06
25.71
26.39
27.08
27.78
28.50
29.24
29.98
30.75
31.54
32.34
33.17
34.00
34.86
35.74
36.65
37.57
38.51
39.47
40.47
41.48
42.52
43.58
44.67
45.79
46.93
48.10
49.31
50.54
* Use wet bulb temperature only in determining total heat † Compiled from data in ASHRAE Guide.
- 10 -
Page 11
CONVERSION OF AIR VOLUME TO STANDARD AIR
FIGURE 1 - TEMPERATURE CONVERSION FACTOR
1.30
1.25
)
1
TEMPERATURE CONVERSION FACTOR (F
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
-50 -25 0 25 50 75 100 125 150 175 200 225 250 275 300 325
350
TEMPERATURE °F
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
When the specified air volume (CFM) is given at any temperature other than 70 °F or at any altitude other than sea level, these charts should be
used for correction before using the following capacity and friction tables (which are based on CFM @ standard air conditions).
FIGURE 2 - ALTITUDE CONVERSION FACTOR
1.025
1.000
0.975
)
2
0.950
0.925
0.900
0.875
0.850
0.825
0.800
0.775
TEMPERATURE CONVERSION FACTOR (F
0.750
0.725
0.700
-500 0 500 1500 2500 3500 4500 5500 6500 7500 8500
ALTITUDE (FEET ABOVE SEA LEVEL)
1.025
1.000
0.975
0.950
0.925
0.900
0.875
0.850
0.825
0.800
0.775
0.750
0.725
0.700
Example: To convert 15,900 CFM of air at 94 °F and at 3,000
ft. altitude to standard conditions:
CFM of Std. Air
= CFM of specified Air x F1 x F
2
= 15,900 X 955 X .896 = 13,600
Where: F1 = Temperature conversion factor from Fig. 1.
F2 = Altitude conversion factor from Fig. 2.
- 11 -
Page 12
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 35°35°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.08
1.16
1.24
1.29
1.33
1.43
1.52
1.59
1.53
1.64
1.75
1.82
1.68
1.81
1.93
2.01
1.93
2.08
2.22
2.31
1.13
1.22
1.30
1.35
1.39
1.49
1.59
1.65
1.59
1.71
1.82
1.90
1.76
1.89
2.01
2.10
2.02
2.17
2.31
2.41
1.18
1.27
1.35
1.41
1.45
1.56
1.66
1.73
1.66
1.79
1.91
1.99
1.83
1.97
2.10
2.19
2.11
2.27
2.42
2.52
1.24
1.33
1.42
1.48
1.51
1.62
1.73
1.80
1.73
1.86
1.98
2.06
1.92
2.06
2.19
2.29
2.19
2.36
2.51
2.62
WET
BULB
54.4
53.5
52.6
52.0
51.6
50.4
49.3
48.5
49.2
47.8
46.4
45.5
47.3
45.7
44.1
43.0
44.1
42.0
40.1
38.8
55.1
54.1
53.2
52.7
52.2
51.1
49.8
49.1
49.9
48.4
47.0
46.0
47.8
46.1
44.6
43.4
44.4
42.4
40.4
39.0
55.9
54.9
54.0
53.3
52.9
51.6
50.5
49.6
50.5
48.9
47.4
46.4
48.4
46.6
44.9
43.7
44.8
42.7
40.6
39.1
56.5
55.5
54.6
53.9
53.6
52.3
51.0
50.2
51.0
49.5
48.0
47.0
48.8
47.0
45.3
44.0
45.3
43.1
41.0
39.4
PER
SQ. FT.
1.12
1.20
1.28
1.33
1.37
1.47
1.57
1.63
1.57
1.69
1.80
1.88
1.75
1.88
2.00
2.09
2.02
2.17
2.31
2.41
1.16
1.25
1.33
1.39
1.43
1.54
1.64
1.71
1.65
1.77
1.89
1.96
1.82
1.96
2.09
2.18
2.10
2.20
2.41
2.51
1.22
1.31
1.40
1.45
1.49
1.60
1.70
1.78
1.72
1.85
1.97
2.05
1.91
2.05
2.18
2.28
2.19
2.36
2.51
2.62
1.26
1.36
1.45
1.51
1.55
1.67
1.78
1.85
1.79
1.93
2.06
2.14
1.99
2.14
2.28
2.38
2.30
2.47
2.63
2.74
WET
BULB
54.7
53.8
53.0
52.5
52.0
51.0
49.8
49.1
49.8
48.5
47.2
46.2
47.7
46.2
44.7
43.6
44.5
42.6
40.7
39.4
55.5
54.6
53.8
53.1
52.7
51.5
49.5
48.6
50.3
48.9
47.5
46.7
48.4
46.7
45.1
44.0
45.0
43.0
41.0
39.7
56.2
55.3
54.4
53.8
53.4
52.2
51.2
50.3
50.9
49.5
48.1
47.1
48.8
47.1
45.6
44.3
45.4
43.3
41.4
39.9
57.1
56.1
55.2
54.5
54.1
52.9
51.7
50.9
51.6
50.0
48.5
47.6
49.3
47.6
45.6
44.7
45.6
43.5
41.5
40.0
PER
SQ. FT.
1.14
1.23
1.31
1.37
1.41
1.52
1.62
1.69
1.63
1.75
1.86
1.94
1.81
1.95
2.08
2.16
2.09
2.25
2.40
2.50
1.19
1.28
1.36
1.42
1.48
1.59
1.69
1.76
1.70
1.83
1.95
2.03
1.89
2.03
2.16
2.25
2.19
2.36
2.51
2.62
1.25
1.34
1.43
1.49
1.54
1.66
1.77
1.84
1.78
1.91
2.03
2.12
1.97
2.12
2.26
2.35
2.29
2.46
2.62
2.73
1.30
1.40
1.49
1.55
1.61
1.73
1.84
1.92
1.86
2.00
2.13
2.22
2.06
2.21
2.35
2.45
2.39
2.57
2.74
2.85
LVG.
WET
BULB
55.1
54.2
53.5
52.9
52.5
51.3
50.3
49.3
50.2
48.9
47.7
46.8
48.2
46.7
45.2
44.2
45.0
43.1
41.3
40.0
55.9
55.0
54.3
53.7
53.1
51.9
50.9
50.2
50.8
49.4
48.1
47.2
48.8
47.2
45.7
44.7
45.4
43.5
41.6
40.2
56.6
55.7
54.9
54.3
53.8
52.6
51.5
50.7
51.4
50.0
48.7
47.7
49.4
47.7
46.1
45.1
45.8
43.8
41.8
40.5
57.4
56.4
55.6
55.0
54.4
53.3
52.1
51.3
51.9
50.5
49.1
48.1
49.8
48.2
46.6
45.5
46.2
44.1
42.0
40.6
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
55.4
54.6
53.9
53.3
52.8
51.8
50.8
50.1
50.6
49.3
48.0
47.2
48.7
47.2
45.8
44.9
45.3
43.5
41.8
40.5
56.1
55.3
54.5
53.9
53.5
52.4
51.4
50.7
51.1
49.8
48.6
47.7
49.2
47.7
46.2
45.2
45.7
43.9
42.0
40.7
57.0
56.1
55.3
54.8
54.2
53.1
52.0
51.3
51.8
50.5
49.1
48.2
49.8
48.2
46.7
45.6
46.2
44.2
42.2
41.0
57.7
56.9
56.1
55.4
54.9
53.8
52.6
52.0
52.4
51.0
49.7
48.6
50.3
48.6
47.1
46.0
46.8
44.7
42.7
41.3
TONS
PER
SQ. FT.
1.20
1.29
1.37
1.43
1.49
1.60
1.70
1.78
1.73
1.86
1.98
2.06
1.93
2.08
2.22
2.31
2.26
2.43
2.59
2.70
1.26
1.35
1.44
1.50
1.55
1.67
1.78
1.85
1.80
1.94
2.07
2.15
2.02
2.17
2.31
2.41
2.36
2.54
2.71
2.82
1.31
1.41
1.50
1.57
1.62
1.74
1.85
1.93
1.89
2.03
2.16
2.25
2.11
2.27
2.42
2.52
2.46
2.65
2.82
2.94
1.37
1.47
1.57
1.63
1.69
1.82
1.94
2.02
1.97
2.12
2.26
2.35
2.19
2.36
2.51
2.62
2.57
2.76
2.94
3.06
PER
SQ. FT.
1.17
1.26
1.34
1.40
1.45
1.56
1.66
1.73
1.68
1.81
1.93
2.01
1.87
2.01
2.14
2.23
2.18
2.34
2.49
2.60
1.23
1.32
1.41
1.47
1.52
1.63
1.74
1.81
1.76
1.89
2.01
2.10
1.95
2.10
2.24
2.33
2.28
2.45
2.61
2.72
1.27
1.37
1.46
1.52
1.58
1.70
1.81
1.89
1.83
1.97
2.10
2.19
2.04
2.19
2.33
2.43
2.38
2.56
2.73
2.84
1.33
1.43
1.52
1.59
1.65
1.77
1.89
1.96
1.92
2.06
2.19
2.29
2.13
2.29
2.44
2.54
2.47
2.66
2.83
2.95
LVG.
WET
BULB
55.7
54.9
54.2
53.7
53.2
52.2
51.2
50.5
50.9
49.7
48.5
47.7
49.0
47.5
46.1
45.2
45.7
43.9
42.2
40.9
56.4
55.8
54.9
54.4
53.9
52.8
51.8
51.2
51.6
50.3
49.1
48.3
49.6
48.1
46.7
45.6
46.2
44.3
42.4
41.2
57.2
56.4
55.7
55.0
54.6
53.5
52.5
51.8
52.2
50.9
49.6
48.8
50.1
48.6
47.1
46.0
46.7
44.7
42.8
41.5
58.0
57.2
56.3
55.8
55.3
54.1
53.1
52.4
52.8
51.4
50.1
49.2
50.8
49.1
47.7
46.6
47.1
45.1
43.2
41.8
TONS
PER
SQ. FT.
1.23
1.32
1.41
1.47
1.53
1.64
1.75
1.82
1.78
1.91
2.03
2.12
1.99
2.14
2.28
2.38
2.33
2.50
2.66
2.78
1.28
1.38
1.47
1.53
1.59
1.71
1.82
1.90
1.86
2.00
2.13
2.22
2.04
2.24
2.39
2.49
2.44
2.62
2.79
2.91
1.34
1.44
1.53
1.60
1.66
1.78
1.90
1.98
1.94
2.09
2.23
2.32
2.18
2.34
2.49
2.60
2.54
2.73
2.91
3.03
1.40
1.50
1.60
1.67
1.73
1.86
1.98
2.06
2.03
2.18
2.32
2.42
2.27
2.44
2.60
2.71
2.65
2.85
3.02
3.15
LVG.
WET
BULB
56.0
55.2
54.5
54.0
53.4
52.5
51.5
50.9
51.3
50.1
49.0
48.2
49.4
48.0
46.6
45.6
46.1
44.4
42.8
41.5
56.8
56.0
55.2
54.7
54.2
53.2
52.3
51.5
51.9
50.7
49.5
48.6
49.9
48.4
47.0
46.0
46.5
44.7
43.0
41.7
57.5
56.7
56.0
55.4
54.9
53.9
52.9
52.2
52.6
51.2
50.0
49.2
50.4
49.0
47.5
46.5
47.1
45.2
43.4
42.1
58.3
57.5
56.7
56.2
55.7
54.6
53.6
52.9
53.1
51.8
50.6
49.7
51.1
49.5
47.9
47.0
47.5
45.6
43.9
42.5
TONS
PER
SQ. FT.
1.25
1.34
1.43
1.49
1.55
1.67
1.78
1.85
1.82
1.96
2.09
2.18
2.05
2.20
2.34
2.44
2.40
2.58
2.75
2.86
1.30
1.40
1.49
1.55
1.63
1.75
1.86
1.94
1.91
2.05
2.18
2.28
2.14
2.30
2.45
2.55
2.51
2.70
2.88
3.00
1.37
1.47
1.57
1.63
1.70
1.83
1.95
2.03
1.99
2.14
2.28
2.38
2.23
2.40
2.56
2.66
2.62
2.82
3.00
3.13
1.42
1.53
1.63
1.70
1.78
1.91
2.03
2.12
2.07
2.23
2.37
2.48
2.33
2.50
2.66
2.78
2.73
2.94
3.13
3.26
LVG.
WET
BULB
56.3
55.5
54.8
54.4
53.9
52.9
52.0
51.4
51.7
50.5
49.3
48.5
49.7
48.3
47.1
46.1
46.5
44.8
43.1
42.0
57.1
56.3
55.6
55.2
54.5
53.4
52.6
52.0
52.2
51.0
49.9
49.0
50.3
48.9
47.5
46.6
47.0
45.2
43.4
42.2
57.8
57.0
56.3
55.8
55.3
54.2
53.2
52.6
52.9
51.7
50.5
49.6
50.9
49.4
48.0
47.1
47.4
45.6
43.9
42.6
58.6
57.8
57.1
56.5
55.9
54.9
53.9
53.2
53.6
52.3
51.1
50.2
51.5
50.0
48.6
47.5
47.9
46.0
44.2
42.9
TONS
PER
SQ. FT.
1.27
1.37
1.46
1.52
1.59
1.71
1.82
1.90
1.86
2.00
2.14
2.23
2.09
2.25
2.40
2.50
2.46
2.65
2.82
2.94
1.33
1.43
1.52
1.59
1.66
1.79
1.91
1.99
1.94
2.09
2.23
2.32
2.19
2.35
2.50
2.61
2.58
2.77
2.95
3.07
1.40
1.50
1.60
1.67
1.73
1.86
1.98
2.06
2.03
2.18
2.32
2.42
2.29
2.46
2.62
2.73
2.70
2.90
3.09
3.22
1.45
1.56
1.66
1.73
1.80
1.94
2.07
2.15
2.12
2.28
2.43
2.53
2.38
2.56
2.73
2.84
2.81
3.02
3.22
3.35
LVG.
WET
BULB
56.5
55.8
55.1
54.7
54.1
53.2
52.3
51.7
52.0
50.8
49.7
48.9
50.1
48.8
47.5
46.6
46.9
45.2
43.7
42.5
57.3
56.6
55.9
55.4
54.9
53.8
52.9
52.3
52.7
51.5
50.3
49.6
50.7
49.3
48.1
47.1
47.3
45.6
44.0
42.9
58.0
57.3
56.6
56.1
55.6
54.6
53.7
53.1
53.3
52.1
51.0
50.2
51.2
49.8
48.5
47.5
47.9
46.0
44.3
43.1
58.9
58.1
57.4
56.9
56.4
55.3
54.3
53.7
54.0
52.7
51.5
50.7
51.9
50.4
49.0
48.1
48.3
46.5
44.7
43.5
SQ. FT.
TONS
PER
1.30
1.40
1.49
1.55
1.62
1.74
1.85
1.93
1.90
2.04
2.17
2.26
2.14
2.30
2.45
2.55
2.53
2.72
2.90
3.02
1.36
1.46
1.55
1.62
1.69
1.82
1.94
2.02
1.99
2.14
2.28
2.38
2.23
2.40
2.56
2.66
2.64
2.84
3.02
3.15
1.41
1.52
1.62
1.69
1.77
1.90
2.02
2.11
2.06
2.22
2.36
2.46
2.33
2.51
2.67
2.79
2.76
2.97
3.16
3.30
1.48
1.59
1.69
1.76
1.84
1.98
2.11
2.20
2.17
2.33
2.48
2.59
2.44
2.62
2.79
2.91
2.88
3.10
3.30
3.44
LVG.
WET
BULB
56.7
56.0
55.3
54.9
54.4
53.5
52.7
52.1
52.3
51.3
50.2
49.5
50.4
49.2
47.9
47.1
47.3
45.6
44.0
43.0
57.5
56.8
56.2
55.7
55.2
54.2
53.3
52.7
53.0
51.8
50.7
49.9
51.1
49.7
48.4
47.6
47.8
46.1
44.5
43.4
58.4
57.6
56.9
56.6
55.9
54.9
54.0
53.4
53.7
52.5
51.5
50.7
51.7
50.3
49.0
48.0
48.3
46.5
44.9
43.6
59.1
58.3
57.7
57.2
56.6
55.6
54.7
54.0
54.3
53.1
51.9
51.1
52.2
50.8
49.5
48.5
48.8
46.9
45.2
44.0
- 12 -
Page 13
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 35°35°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.28
1.38
1.47
1.53
1.57
1.69
1.80
1.88
1.80
1.94
2.07
2.14
1.99
2.14
2.28
2.38
2.30
2.47
2.63
2.74
1.34
1.44
1.53
1.60
1.64
1.76
1.87
1.95
1.88
2.02
2.15
2.24
2.07
2.23
2.37
2.48
2.39
2.57
2.74
2.85
1.40
1.50
1.60
1.67
1.70
1.83
1.95
2.03
1.96
2.11
2.25
2.34
2.16
2.32
2.47
2.58
2.48
2.67
2.84
2.96
WET
BULB
57.4
56.3
55.4
54.7
54.3
52.9
51.7
50.7
51.7
50.0
48.4
47.6
49.4
47.6
45.8
44.5
45.5
43.3
41.0
39.5
58.1
57.0
56.1
55.2
54.9
53.6
52.3
51.4
52.2
50.6
49.0
47.9
50.0
48.0
46.2
44.8
46.0
43.6
41.3
39.7
58.7
57.7
56.7
56.0
55.6
54.2
52.9
52.0
52.8
50.9
49.4
48.3
50.4
48.5
46.6
45.2
46.5
44.0
41.6
40.0
PER
SQ. FT.
1.32
1.42
1.51
1.58
1.62
1.74
1.85
1.93
1.87
2.01
2.14
2.23
2.07
2.23
2.37
2.48
2.39
2.57
2.74
2.85
1.38
1.48
1.58
1.64
1.69
1.82
1.94
2.02
1.95
2.10
2.24
2.33
2.16
2.32
2.47
2.58
2.49
2.68
2.85
2.97
1.43
1.54
1.64
1.71
1.76
1.89
2.01
2.10
2.03
2.18
2.32
2.42
2.25
2.42
2.58
2.69
2.59
2.79
2.97
3.10
WET
BULB
57.8
56.8
55.8
55.2
54.8
53.5
52.4
51.5
52.1
50.6
49.1
48.1
49.1
48.1
46.4
45.1
46.1
43.9
41.8
40.3
58.5
57.5
56.5
55.9
55.4
54.1
52.8
52.0
52.7
51.1
49.5
48.5
50.4
48.6
46.8
45.5
46.6
44.2
42.1
40.5
59.3
58.2
57.3
56.6
56.1
54.8
53.5
52.6
53.3
51.7
50.2
49.0
50.9
49.0
47.2
45.8
47.0
44.6
42.3
40.6
SQ. FT.
PER
1.36
1.46
1.55
1.62
1.67
1.80
1.92
2.00
1.93
2.08
2.22
2.31
2.15
2.31
2.46
2.56
2.49
2.68
2.85
2.97
1.41
1.52
1.62
1.69
1.75
1.88
2.00
2.09
2.02
2.17
2.31
2.41
2.24
2.41
2.57
2.68
2.59
2.79
2.97
3.10
1.47
1.58
1.68
1.75
1.81
1.95
2.08
2.16
2.10
2.26
2.41
2.51
2.33
2.50
2.66
2.78
2.70
2.90
3.09
3.22
LVG.
WET
BULB
51.8
57.2
56.3
55.7
55.2
53.9
52.8
51.9
52.6
51.1
49.6
48.7
50.4
48.6
47.0
45.8
46.6
44.4
42.4
40.9
58.9
57.9
57.0
56.4
55.8
54.5
53.4
52.5
53.2
51.6
50.2
49.1
50.9
49.1
47.3
46.1
47.1
44.8
42.7
41.0
59.7
58.7
57.8
57.2
56.6
55.3
54.0
53.2
53.8
52.2
50.7
49.6
51.5
49.7
48.0
46.6
47.5
45.2
43.0
41.4
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
58.5
57.6
56.8
56.2
55.6
54.4
53.3
52.5
53.0
51.5
50.2
49.1
50.9
49.1
47.5
46.4
47.1
45.0
42.9
41.4
54.2
58.3
57.5
56.8
56.3
55.0
53.8
53.1
53.7
52.2
50.9
49.8
51.4
49.6
48.0
46.8
47.6
45.4
43.3
41.8
60.0
59.1
58.2
57.6
57.0
55.8
54.6
53.8
54.3
52.8
51.3
50.2
52.0
50.2
48.5
47.3
48.0
45.8
43.6
42.1
TONS
PER
SQ. FT.
1.42
1.53
1.63
1.70
1.77
1.90
2.02
2.11
2.06
2.21
2.35
2.45
2.30
2.47
2.63
2.74
2.68
2.88
3.07
3.20
1.49
1.60
1.70
1.78
1.84
1.98
2.11
2.20
2.14
2.30
2.45
2.55
2.39
2.57
2.74
2.85
2.79
3.00
3.20
3.33
1.54
1.66
1.77
1.84
1.92
2.06
2.19
2.29
2.22
2.39
2.55
2.65
2.48
2.67
2.84
2.96
2.90
3.12
3.32
3.46
PER
SQ. FT.
1.39
1.49
1.59
1.65
1.72
1.85
1.97
2.05
2.00
2.15
2.29
2.39
2.22
2.39
2.55
2.65
2.59
2.78
2.96
3.09
1.45
1.56
1.66
1.73
1.79
1.93
2.06
2.14
2.07
2.23
2.37
2.48
2.32
2.49
2.65
2.76
2.69
2.89
3.08
3.21
1.51
1.62
1.73
1.80
1.86
2.00
2.13
2.22
2.17
2.33
2.48
2.59
2.41
2.59
2.76
2.87
2.80
3.01
3.21
3.34
LVG.
WET
BULB
58.8
57.9
57.1
56.5
56.0
54.8
53.8
53.0
53.4
52.0
50.7
49.8
51.2
49.6
48.0
46.9
47.5
45.5
43.5
42.0
59.5
58.7
57.8
57.2
56.7
55.5
54.4
53.6
54.1
52.7
51.3
50.3
51.8
50.1
48.5
47.4
48.0
45.9
43.7
42.3
60.4
59.5
38.6
58.0
57.4
56.2
55.1
54.2
54.8
53.3
51.9
50.9
52.5
50.7
49.1
47.9
48.5
46.3
44.2
42.7
TONS
PER
SQ. FT.
1.45
1.56
1.66
1.73
1.80
1.94
2.07
2.15
2.11
2.27
2.42
2.52
2.36
2.54
2.71
2.82
2.76
2.97
3.16
3.30
1.52
1.63
1.74
1.81
1.88
2.02
2.15
2.24
2.20
2.37
2.52
2.63
2.46
2.65
2.82
2.94
2.88
3.10
3.30
3.44
1.58
1.70
1.81
1.89
1.95
2.10
2.24
2.33
2.29
2.46
2.62
2.73
2.57
2.76
2.94
3.06
2.99
3.22
3.43
3.57
LVG.
WET
BULB
59.2
58.3
57.5
57.0
56.4
55.3
54.2
53.5
53.9
52.5
51.2
50.3
51.7
50.1
48.5
47.5
48.0
46.0
44.1
42.7
59.9
59.0
58.2
57.7
57.1
56.0
54.9
54.2
54.5
53.0
51.8
50.8
52.3
50.6
49.1
47.9
48.5
46.3
44.4
42.9
60.7
59.8
59.0
58.4
58.9
56.7
55.6
54.8
55.2
53.7
52.4
51.4
52.7
51.1
49.5
48.4
49.0
46.8
44.8
43.3
TONS
PER
SQ. FT.
1.48
1.59
1.69
1.76
1.85
1.99
2.12
2.21
2.16
2.32
2.47
2.58
2.43
2.61
2.78
2.90
2.85
3.06
3.26
3.40
1.54
1.66
1.77
1.84
1.93
2.07
2.20
2.30
2.25
2.42
2.58
2.69
2.53
2.72
2.90
3.02
2.97
3.19
3.40
3.54
1.61
1.73
1.84
1.92
2.00
2.15
2.29
2.39
2.34
2.52
2.68
2.80
2.63
2.83
3.01
3.14
3.09
3.32
3.54
3.69
LVG.
WET
BULB
59.4
58.6
57.9
57.4
56.7
55.6
54.6
53.9
54.3
53.0
51.7
50.8
52.1
50.5
49.0
48.0
48.4
46.5
44.6
43.2
60.2
59.4
58.6
58.1
57.4
56.3
55.3
54.5
54.9
53.6
52.3
51.3
52.7
51.1
49.5
48.4
48.9
46.9
44.9
43.6
61.0
60.1
59.4
58.8
58.2
57.1
56.0
55.2
55.6
54.2
52.9
51.9
53.3
51.6
50.1
49.0
49.4
47.3
45.3
43.8
TONS
PER
SQ. FT.
1.52
1.63
1.74
1.81
1.89
2.03
2.16
2.25
2.20
2.37
2.52
2.63
2.48
2.67
2.84
2.96
2.93
3.15
3.35
3.50
1.58
1.70
1.81
1.89
1.96
2.11
2.25
2.34
2.30
2.47
2.63
2.74
2.59
2.78
2.96
3.09
3.05
3.28
3.49
3.64
1.65
1.77
1.89
1.96
2.05
2.20
2.34
2.44
2.41
2.57
2.76
2.87
2.70
2.90
3.09
3.22
3.17
3.41
3.63
3.79
LVG.
WET
BULB
59.6
58.9
58.1
57.6
57.0
56.0
55.0
54.3
54.7
53.4
52.2
51.3
52.5
51.0
49.6
48.6
48.8
46.9
45.1
43.1
60.4
59.6
58.9
58.3
57.8
56.7
55.7
55.2
55.3
54.0
52.8
51.9
53.1-
51.6
50.1
49.0
49.3
47.4
46.0
44.1
61.2
60.4
59.6
59.1
58.5
57.4
56.4
55.7
55.9
54.7
53.2
52.3
53.7
52.1
50.6
49.5
49.9
47.9
45.9
44.4
TONS
PER
SQ. FT.
1.54
1.66
1.77
1.84
1.93
2.07
2.20
2.30
2.26
2.43
2.59
2.70
2.54
2.73
2.91
3.03
3.00
3.23
3.44
3.59
1.61
1.73
1.84
1.92
2.00
2.15
2.29
2.39
2.35
2.53
2.69
2.81
2.64
2.84
3.02
3.15
3.12
3.36
3.58
3.73
1.67
1.80
1.92
2.00
2.08
2.24
2.39
2.49
2.45
2.63
2.80
2.92
2.75
2.96
3.15
3.29
3.26
3.50
3.73
3.89
LVG.
WET
BULB
59.9
59.1
58.4
57.9
57.3
56.3
55.4
54.7
55.0
53.7
52.5
51.7
52.9
51.4
50.0
49.1
49.3
47.4
45.6
44.3
60.7
59.9
59.2
58.7
58.1
57.1
56.1
55.4
55.7
54.4
53.2
52.3
53.6
52.1
50.7
49.6
49.9
47.9
46.0
44.7
61.5
60.7
59.9
59.4
58.9
57.8
56.8
56.1
56.3
55.1
53.8
52.9
54.2
52.6
51.2
50.0
50.3
48.3
46.4
45.0
- 13 -
Page 14
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 35°35°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.45
1.56
1.66
1.73
1.78
1.91
2.03
2.12
2.04
2.19
2.33
2.43
2.25
2.42
2.58
2.69
2.59
2.78
2.96
3.09
1.51
1.62
1.73
1.80
1.84
1.98
2.11
2.20
2.12
2.28
2.43
2.53
2.33
2.51
2.67
2.79
2.69
2.89
3.08
3.21
1.56
1.68
1.79
1.86
1.92
2.06
2.19
2.29
2.20
2.37
2.52
2.63
2.43
2.61
2.78
2.90
2.79
3.00
3.20
3.33
WET
BULB
59.6
58.5
57.4
56.7
56.2
54.8
53.5
52.4
53.3
51.6
50.0
48.8
50.9
48.9
46.9
45.5
46.8
44.3
41.8
40.0
60.3
59.2
58.1
57.4
57.0
55.5
54.1
53.1
54.0
52.2
50.4
49.2
51.6
49.5
47.5
46.0
47.2
44.6
42.1
40.2
61.2
60.0
58.9
58.2
57.2
56.1
54.7
53.2
54.6
52.7
51.0
49.7
52.0
49.9
47.8
46.3
47.7
45.0
42.3
40.5
PER
SQ. FT.
1.49
1.60
1.70
1.78
1.83
1.97
2.10
2.19
2.11
2.27
2.42
2.52
2.33
2.51
2.67
2.79
2.70
2.90
3.09
3.22
1.55
1.67
1.78
1.85
1.91
2.05
2.18
2.28
2.19
2.36
2.51
2.62
2.43
2.61
2.78
2.90
2.80
3.01
3.21
3.34
1.61
1.73
1.84
1.92
1.97
2.12
2.26
2.35
2.28
2.45
2.61
2.72
2.52
2.71
2.89
3.01
2.91
3.13
33.3
3.47
WET
BULB
60.0
59.0
58.1
57.3
56.8
55.4
54.1
53.1
53.9
52.3
50.6
49.5
51.6
49.6
47.8
46.3
47.4
45.0
42.6
40.8
60.8
59.7
58.7
58.0
57.4
56.1
54.7
53.7
54.6
52.8
51.2
50.0
52.1
50.1
48.2
46.7
47.9
45.4
42.9
41.3
61.6
60.5
59.5
58.7
58.3
56.8
55.4
54.5
55.2
53.4
51.7
50.5
52.7
50.6
48.6
47.2
48.3
45.7
43.2
41.4
SQ. FT.
PER
1.53
1.65
1.76
1.83
1.89
2.03
2.16
2.25
2.19
2.35
2.50
2.61
2.42
2.60
2.77
2.89
2.81
3.02
3.22
3.35
1.59
1.71
1.82
1.90
1.96
2.11
2.25
2.34
2.27
2.44
2.60
2.71
2.52
2.71
2.89
3.01
2.92
3.14
3.34
3.49
1.66
1.78
1.90
1.99
2.04
2.19
2.33
2.43
2.36
2.54
2.71
2.82
2.61
2.81
2.99
3.12
3.03
3.26
3.47
3.62
LVG.
WET
BULB
60.4
59.4
58.4
57.8
57.2
55.9
54.5
53.8
54.4
52.8
51.3
50.1
52.0
50.2
48.4
47.0
47.9
45.5
43.2
41.6
61.2
60.2
59.3
58.5
58.0
56.6
55.3
54.4
55.1
53.4
51.8
50.7
52.6
50.7
48.7
47.4
48.4
45.9
43.6
41.8
62.0
60.9
59.9
59.2
58.7
57.3
56.0
55.1
55.7
54.0
52.3
51.1
53.3
51.3
49.3
47.9
48.9
46.3
43.9
42.1
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
60.6
59.9
59.0
58.4
57.7
56.4
55.2
54.3
55.0
53.4
51.8
50.8
52.6
50.8
49.0
47.7
48.5
46.2
44.0
42.4
61.6
60.7
59.8
59.1
58.4
57.1
55.9
55.0
55.6
54.0
52.4
51.3
53.2
51.3
49.5
48.1
49.0
46.5
44.2
42.5
62.4
61.4
60.4
59.8
59.2
57.9
56.5
55.7
56.3
54.6
53.1
51.9
53.7
51.8
49.9
48.6
49.5
47.0
44.6
42.9
TONS
PER
SQ. FT.
1.61
1.73
1.84
1.92
1.99
2.14
2.28
2.38
2.32
2.49
2.65
2.76
2.59
2.78
2.96
3.09
3.02
3.25
3.46
3.61
1.67
1.80
1.92
2.00
2.06
2.22
2.36
2.46
2.41
2.59
2.76
2.87
2.69
2.89
3.08
3.21
3.14
3.38
3.60
3.75
1.74
1.87
1.99
2.08
2.15
2.31
2.46
2.56
2.50
2.69
2.86
2.99
2.79
3.00
3.20
3.33
3.26
3.51
3.74
3.90
PER
SQ. FT.
1.56
1.68
1.79
1.86
1.94
2.09
2.23
2.32
2.25
2.42
2.58
2.69
2.50
2.69
2.86
2.99
2.91
3.13
3.33
3.47
1.63
1.75
1.86
1.94
2.02
2.17
2.31
2.41
2.34
2.52
2.68
2.80
2.60
2.80
2.98
3.11
3.03
3.26
3.47
3.62
1.69
1.82
1.94
2.02
2.09
2.25
2.40
2.50
2.43
2.61
2.78
2.90
2.71
2.91
3.10
3.23
3.14
3.38
3.60
3.75
LVG.
WET
BULB
61.1
60.2
59.4
58.7
58.1
56.9
55.7
54.9
55.4
53.9
52.4
51.4
53.0
51.2
49.5
48.3
48.9
46.7
44.5
42.8
62.0
61.0
60.1
59.4
59.0
57.7
56.5
55.7
56.1
54.5
53.0
52.0
53.6
51.8
50.0
48.8
49.4
47.1
44.8
43.2
62.7
61.8
60.9
60.2
59.6
58.3
57.1
56.3
56.8
55.1
53.6
52.5
54.3
52.4
50.5
49.3
49.9
47.5
45.1
43.4
TONS
PER
SQ. FT.
1.64
1.76
1.87
1.95
2.04
2.19
2.33
2.43
2.38
2.56
2.73
2.84
2.67
2.87
3.06
3.19
3.12
3.35
3.57
3.72
1.70
1.83
1.95
2.03
2.12
2.28
2.43
2.53
2.47
2.66
2.83
2.95
2.77
2.98
3.17
3.31
3.25
3.49
3.72
3.87
1.78
1.91
2.03
2.12
2.19
2.36
2.51
2.62
2.58
2.77
2.95
3.07
2.88
3.10
3.30
3.44
3.37
3.62
3.86
4.02
LVG.
WET
BULB
61.5
60.6
59.8
59.2
58.5
57.4
56.2
55.4
55.8
54.3
52.9
51.9
53.4
51.7
50.0
48.8
49.4
47.2
45.1
43.6
62.4
61.4
60.6
60.0
59.3
58.1
56.9
56.1
56.6
55.0
53.6
52.5
54.1
52.3
50.6
49.3
49.9
47.6
45.4
43.9
63.1
62.2
61.3
60.6
60.2
58.8
57.7
56.8
57.1
55.6
54.1
53.1
54.7
52.8
51.1
49.8
50.4
48.1
45.8-
44.2
TONS
PER
SQ. FT.
1.67
1.80
1.92
2.00
2.08
2.24
3.39
2.49
2.44
2.62
2.79
32.91
2.73
2.94
3.13
3.26
3.21
3.45
3.67
3.83
1.74
1.87
1.99
2.08
2.17
2.33
2.48
2.59
2.53
2.72
2.90
3.02
2.85
3.06
3.26
3.40
3.34
3.59
3.82
3.98
1.80
1.94
2.07
2.15
2.25
2.42
2.58
2.72
2.63
2.83
3.01
3.14
2.95
3.17
3.38
3.52
3.47
3.73
3.97
4.14
LVG.
WET
BULB
61.8
60.9
60.1
59.5
59.0
57.8
56.6
55.9
56.3
54.8
53.5
52.5
54.0
52.2
50.6
49.5
49.9
47.8
45.8
44.2
62.6
61.7
60.9
60.3
59.6
58.5
57.4
56.4
57.0
55.5
54.1
53.1
54.5
52.8
51.1
49.9
50.4
48.2
46.1
44.6
63.5
62.6
61.7
61.1
60.4
59.2
58.0
57.2
57.7
56.2
54.7
53.7
55.2
53.4
51.7
50.5
51.0
48.7
46.5
44.9
TONS
PER
SQ. FT.
1.71
1.84
1.96
2.04
2.13
2.29
2.44
2.54
2.49
2.68
2.85
2.97
2.80
3.01
3.21
3.34
3.30
3.55
3.78
3.94
1.77
1.91
2.02
2.11
2.21
2.38
2.53
2.64
2.59
2.78
2.96
3.09
2.91
3.13
3.33
3.47
3.43
3.69
3.93
4.10
1.84
1.98
2.11
2.20
2.30
2.47
2.63
2.74
2.69
2.89
3.08
3.21
3.03
3.26
3.47
3.62
3.57
3.84
4.09
4.26
LVG.
WET
BULB
62.1
61.2
60.4
59.9
59.3
58.1
57.1
56.3
56.7
55.3
54.0
53.1
54.4
52.8
51.1
50.1
50.4
48.3
46.3
44.8
62.9
62.0
61.3
60.7
60.0
58.9
57.8
57.0
57.4
56.0
54.7
53.6
55.0
53.3
51.8
50.6
50.9
48.8
46.7
45.1
63.9
62.9
62.0
61.4
60.8
59.6
58.5
57.7
58.1
56.7
55.2
54.3
55.6
53.9
52.2
51.0
51.4
49.2
47.0
45.5
TONS
PER
SQ. FT.
1.74
1.87
1.99
2.08
2.17
2.33
2.48
2.59
2.55
2.74
2.92
3.04
2.86
3.08
3.28
3.42
3.39
3.34
3.88
4.04
1.80
1.94
2.07
2.15
2.25
2.42
2.58
2.69
2.65
2.85
3.04
3.16
2.98
3.20
3.41
3.55
3.52
3.78
4.03
4.20
1.88
2.02
2.15
2.24
2.34
2.52
2.68
2.80
2.75
2.96
3.15
3.29
3.10
3.33
3.55
3.70
3.66
3.93
4.19
4.36
LVG.
WET
BULB
62.3
61.5
60.8
60.2
59.6
58.5
57.5
56.8
57.0
55.7
54.4
53.5
54.8
53.2
51.7
50.6
50.8
48.8
46.8
45.4
63.2
62.4
61.7
61.1
60.4
59.3
58.2
57.5
57.8
56.4
55.0
54.2
55.4
53.8
52.3
51.2
51.4
49.3
47.3
45.8
64.0
63.1
62.4
61.8
61.2
60.0
59.0
58.1
58.5
57.0
55.7
54.7
56.1
54.4
52.8
51.6
51.9
49.8
47.7
46.2
- 14 -
Page 15
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 40°40°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
.91
.98
1.04
1.09
1.12
1.20
1.28
1.33
1.28
1.38
1.47
1.53
1.41
1.52
1.62
1.69
1.63
1.75
1.86
1.94
.96
1.03
1.10
1.14
1.18
1.27
1.35
1.41
1.35
1.45
1.54
1.61
1.49
1.60
1.70
1.78
1.71
1.84
1.96
2.04
1.01
1.09
1.16
1.21
1.24
1.33
1.42
1.48
1.42
1.53
1.63
1.70
1.56
1.68
1.79
1.86
1.80
1.94
2.07
2.15
1.06
1.14
1.21
1.27
1.29
1.39
1.48
1.54
1.49
1.60
1.70
1.78
1.65
1.77
1.89
1.96
1.89
2.03
2.16
2.25
WET
BULB
56.2
55.5
54.8
54.3
54.0
53.1
52.2
51.6
52.2
51.0
49.9
49.2
50.6
49.3
48.1
47.2
48.0
46.4
45.0
44.0
56.9
56.2
55.4
55.0
54.6
53.6
52.7
52.0
52.7
51.5
50.5
49.6
51.1
49.7
48.5
47.5
48.4
46.8
45.2
44.2
57.6
56.8
56.1
55.5
55.2
54.2
53.2
52.5
53.2
52.0
50.8
50.0
51.6
50.2
48.9
48.0
48.8
47.0
45.3
44.3
58.4
57.5
56.8
56.2
56.0
54.9
53.9
53.2
53.8
52.5
51.4
53.9
52.0
50.6
49.1
48.3
49.1
47.4
45.7
44.5
PER
SQ. FT.
.94
1.01
1.08
1.12
1.15
1.24
1.32
1.38
1.33
1.43
1.52
1.59
1.47
1.58
1.68
1.75
1.70
1.83
1.95
2.03
.99
1.06
1.13
1.18
1.21
1.30
1.38
1.44
1.40
1.50
1.60
1.67
1.55
1.67
1.78
1.85
1.79
1.92
2.04
2.13
1.04
1.12
1.19
1.24
1.27
1.37
1.46
1.52
1.47
1.58
1.68
1.75
1.63
1.75
1.86
1.94
1.88
2.02
2.15
2.24
1.09
1.17
1.25
1.30
1.34
1.44
1.53
1.60
1.54
1.66
1.77
1.84
1.71
1.84
1.96
2.04
1.97
2.12
2.26
2.35
WET
BULB
56.5
55.8
55.1
54.7
54.4
53.4
52.6
51.9
52.5
51.4
50.4
49.6
51.0
49.7
48.6
47.7
48.3
46.8
45.3
44.3
57.2
56.5
55.8
55.3
55.0
54.1
53.3
52.6
53.0
52.0
50.9
50.1
51.4
50.1
48.8
48.0
48.7
47.2
45.7
44.6
58.0
57.2
56.5
56.0
55.7
54.7
53.7
53.1
53.6
52.5
51.4
50.6
51.9
50.6
49.3
48.4
49.1
47.5
45.9
44.8
58.7
57.9
57.2
56.7
56.3
55.3
54.3
53.6
54.2
53.0
51.8
51.0
52.4
51.0
49.7
48.8
49.6
47.8
46.2
45.0
SQ. FT.
PER
.97
1.04
1.11
1.15
1.19
1.28
1.36
1.42
1.38
1.48
1.58
1.64
1.53
1.64
1.75
1.82
1.77
1.90
2.02
2.11
1.01
1.09
1.16
1.21
1.25
1.35
1.45
1.51
1.45
1.56
1.66
1.73
1.61
1.73
1.84
1.92
1.86
2.00
2.13
2.22
1.07
1.15
1.22
1.28
1.32
1.42
1.51
1.58
1.53
1.64
1.75
1.82
1.68
1.81
1.93
2.01
1.95
2.10
2.24
2.33
1.12
1.20
1.28
1.33
1.39
1.49
1.59
1.65
1.60
1.72
1.83
1.91
1.77
1.90
2.02
2.11
2.06
2.21
2.35
2.45
LVG.
WET
BULB
56.7
56.1
55.4
55.0
54.6
53.7
53.0
52.4
52.8
51.9
50.7
50.1
51.2
50.1
48.9
48.1
48.7
47.2
45.9
44.8
57.5
56.8
56.2
55.7
55.4
54.3
53.4
52.8
53.4
52.3
51.2
50.5
51.7
50.5
49.3
48.8
49.1
47.6
46.1
45.0
58.2
57.5
56.9
56.3
55.9
55.0
54.1
53.4
53.9
52.8
51.7
50.9
52.4
51.0
49.8
48.9
49.6
47.9
46.4
45.3
59.0
58.3
57.6
57.1
56.5
55.6
54.6
54.0
54.5
53.3
52.2
51.4
52.9
51.5
50.3
49.4
49.8
48.2
46.6
45.5
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
57.0
56.4
55.8
55.3
54.9
54.1
53.3
52.8
53.2
52.2
51.2
50.5
51.6
50.4
49.3
48.4
49.0
47.5
46.1
45.1
57.8
57.1
56.5
56.0
55.7
54.8
53.9
53.4
53.7
52.7
51.7
51.0
52.1
51.0
49.7
48.9
49.4
47.9
46.4
45.4
58.6
57.9
57.3
56.8
56.3
55.4
54.6
53.9
54.4
53.3
52.2
51.5
52.6
51.4
50.2
49.2
49.9
48.3
46.8
45.7
59.4
58.6
57.9
57.4
57.0
56.1
55.2
54.5
54.9
53.8
52.6
52.0
53.2
51.9
50.6
49.7
50.3
48.6
47.1
46.0
TONS
PER
SQ. FT.
1.01
1.09
1.16
1.21
1.26
1.35
1.44
1.50
1.46
1.57
1.67
1.74
1.63
1.75
1.86
1.94
1.91
2.05
2.18
2.28
1.07
1.15
1.22
1.28
1.32
1.42
1.51
1.58
1.53
1.65
1.76
1.83
1.71
1.84
1.96
2.04
2.00
2.15
2.29
2.39
1.12
1.20
1.28
1.33
1.39
1.49
1.59
1.65
1.61
1.73
1.84
1.92
1.80
1.94
2.07
2.15
2.10
2.26
2.41
2.51
1.17
1.26
1.34
1.40
1.45
1.56
1.66
1.73
1.69
1.82
1.94
2.02
1.89
2.03
2.16
2.25
2.20
2.37
2.52
2.63
PER
SQ. FT.
.99
1.06
1.13
1.18
1.22
1.31
1.40
1.45
1.41
1.52
1.62
1.69
1.58
1.70
1.81
1.89
1.84
1.98
2.11
2.20
1.04
1.12
1.19
1.24
1.28
1.38
1.47
1.53
1.49
1.60
1.70
1.78
1.66
1.78
1.90
1.98
1.93
2.08
2.22
2.31
1.09
1.17
1.24
1.29
1.35
1.45
1.54
1.61
1.56
1.68
1.79
1.86
1.75
1.88
2.00
2.09
2.03
2.18
2.32
2.42
1.14
1.23
1.31
1.37
1.41
1.52
1.62
1.69
1.65
1.77
1.89
1.96
1.83
1.97
2.10
2.19
2.13
2.29
2.44
2.54
LVG.
WET
BULB
57.3
56.6
56.1
55.6
55.2
54.4
53.6
53.1
53.4
52.4
51.5
50.9
51.9
50.8
49.7
48.9
49.2
47.8
46.5
45.5
58.0
51.3
56.8
56.3
55.4
55.1
54.3
53.6
54.1
53.0
52.0
51.4
52.5
51.3
50.1
49.4
49.7
48.3
46.9
45.8
58.8
58.1
57.5
57.1
56.6
55.7
54.9
54.3
54.7
53.6
52.6
51.9
53.0
51.7
50.5
49.7
50.2
48.7
47.2
46.1
59.6
58.9
58.2
57.7
57.3
56.4
55.6
55.0
55.3
54.1
53.1
52.4
53.5
52.3
51.1
50.2
50.7
49.0
47.6
46.4
TONS
PER
SQ. FT.
1.03
1.11
1.18
1.23
1.28
1.38
1.47
1.53
1.50
1.61
1.71
1.79
1.68
1.81
1.93
2.01
1.98
2.11
2.25
2.34
1.09
1.17
1.25
1.30
1.35
1.45
1.54
1.61
1.58
1.70
1.81
1.89
1.77
1.90
2.02
2.11
2.06
2.22
2.36
2.46
1.14
1.23
1.31
1.37
1.41
1.52
1.62
1.69
1.66
1.78
1.90
1.98
1.86
2.00
2.13
2.22
2.18
2.34
2.49
2.60
1.20
1.29
1.37
1.43
1.49
1.60
1.70
1.78
1.74
1.87
1.99
2.08
1.94
2.09
1.23
2.32
2.28
2.45
2.61
2.72
LVG.
WET
BULB
57.5
56.9
56.4
56.0
55.5
54.7
54.0
53.4
53.7
5.28
51.9
51.2
52.2
51.0
50.0
49.2
49.5
48.2
46.9-
46.0
58.3
57.6
57.0
56.6
56.2
55.4
54.6
54.1
54.3
53.3
52.3
51.6
52.7
51.5
50.5
49.7
50.1
48.6
47.3
46.3
59.1
58.4
57.8
57.3
57.0
56.1
55.3
54.7
54.9
53.9
52.9
52.2
53.3
52.0
50.9
50.1
50.4
49.0
47.5
46.5
59.8
59.1
58.5
58.1
57.6
56.7
55.9
55.3
55.6
54.5
53.5
52.7
53.9
52.6
51.4
50.6
51.0
49.4
47.9
46.9
TONS
PER
SQ. FT.
1.05
1.13
1.20
1.25
1.31
1.41
1.50
1.57
1.53
1.65
1.76
1.83
1.72
1.85
1.97
2.05
2.03
2.18
2.32
2.42
1.11
1.19
1.27
1.32
1.39
1.49
1.59
1.65
1.62
1.74
1.85
1.93
1.81
1.95
2.08
2.16
2.16
2.29
2.44
2.54
1.16
1.25
1.33
1.39
1.45
1.56
1.66
1.73
1.70
1.83
1.95
2.03
1.91
2.05
2.18
2.28
2.24
2.41
2.57
2.68
1.22
1.31
1.40
1.45
1.53
1.64
1.75
1.87
1.78
1.91
2.03
2.12
2.00
2.15
2.29
2.39
2.34
2.52
2.68
2.80
LVG.
WET
BULB
57.8
57.2
56.6
56.3
55.8
55.0
54.3
53.7
54.0
53.0
52.3
51.6
52.5
51.4
50.4
49.7
49.8
48.5
47.2
46.3
58.5
57.9
57.3
56.9
56.4
55.6
54.8
54.4
54.6
53.6
52.7
52.1
53.1
51.9
50.8
50.1
50.4
49.0
47.6
46.7
59.3
58.7
58.1
57.6
57.2
56.3
55.6
55.0
55.3
54.2
53.2
52.6
53.6
52.4
51.3
50.5
50.8
49.3
47.9
47.9
60.1
59.4
58.8
58.4
57.8
57.0
56.2
55.6
55.9
54.9
53.9
53.2
54.2
53.0
51.8
50.9
51.4
49.8
48.4
47.3
TONS
PER
SQ. FT.
1.08
1.16
1.24
1.29
1.34
1.44
1.53
160
1.57
1.69
1.80
1.88
1.77
1.90
2.02
2.11
2.08
2.24
2.39
2.49
1.13
1.22
1.30
1.35
1.41
1.52
1.62
1.69
1.66
1.78
1.91
1.98
1.86
2.00
2.13
2.22
2.19
2.36
2.51
2.62
1.19
1.28
1.36
1.42
1.48
1.59
1.69
1.76
1.74
1.87
1.99
2.08
1.95
2.10
2.24
2.32
2.30
2.47
2.63
2.74
1.25
1.34
1.43
1.49
1.55
1.67
1.78
1.85
1.82
1.96
2.09
2.18
2.05
2.20
2.34
2.44
2.42
2.60
2.76
2.87
LVG.
WET
BULB
57.9
57.3
56.7
56.4
56.0
55.3
54.6
54.0
54.3
53.3
52.5
51.8
52.7
51.7
50.7
49.9
50.2
48.8
47.6
46.7
58.7
58.1
57.5
57.1
56.7
55.9
55.2
54.6
54.9
53.9
53.0
52.4
53.3
52.2
51.2
50.4
50.7
49.2
48.0
47.0
59.5
58.8
58.3
57.9
57.4
56.6
55.9
55.4
55.5
54.5
53.6
52.9
53.9
52.8
51.6
51.0
51.2
49.7
48.4
47.4
60.2
59.6
59.0
58.6
58.2
57.3
56.5
56.0
56.2
55.2
54.2
53.5
54.5
53.3
52.3
51.4
51.6
50.1
48.8
47.8
TONS
PER
SQ. FT.
1.10
1.18
1.26
1.31
1.37
1.47
1.57
1.63
1.61
1.73
1.84
1.92
1.80
1.94
2.07
2.15
2.13
2.29
2.44
2.54
1.15
1.24
1.32
1.38
1.44
1.55
1.65
1.72
1.69
1.82
1.94
2.02
1.90
2.04
2.17
2.26
2.24
2.41
2.57
2.68
1.21
1.30
1.38
1.44
1.51
1.62
1.73
1.80
1.78
1.91
2.03
2.12
2.00
2.15
2.29
2.39
2.36
2.54
2.71
2.82
1.26
1.36
1.45
1.51
1.58
1.70
1.81
1.89
1.86
2.00
2.13
2.22
2.09
2.25
2.40
2.50
2.47
2.66
2.83
2.95
LVG.
WET
BULB
58.1
57.5
57.0
56.6
56.2
55.5
54.8
54.3
54.5
53.6
52.8
52.2
53.1
52.0
51.0
50.4
50.5
49.2
48.0
47.2
58.9
58.3
57.8
57.3
56.9
56.2
55.4
54.9
55.2
54.2
53.3
52.7
53.6
52.5
51.6
50.9
51.0
49.7
48.4
47.5
59.7
59.1
58.6
58.2
57.7
56.9
56.1
55.7
55.8
54.8
54.0
53.3
54.2
53.1
52.0
51.2
51.5
50.0
48.7
47.8
60.5
59.9
59.3
58.9
58.4
57.6
56.8
56.3
56.5
55.5
54.6
53.9
54.9
53.7
52.5
51.8
52.0
50.5
49.2
48.2
- 15 -
Page 16
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 40°40°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
COIL FACE VELOCITY - FPM
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.11
1.19
1.27
1.32
1.36
1.46
1.55
1.62
1.56
1.68
1.79
1.85
1.72
1.85
1.97
2.05
1.98
2.13
2.27
2.36
1.16
1.25
1.33
1.39
1.42
1.533
1.63
1.70
1.64
1.76
1.87
1.95
1.80
1.94
2.07
2.15
2.07
2.23
2.37
2.48
1.22
1.31
1.40
1.45
1.49
1.60
1.70
1.78
1.71
1.84
1.96
2.04
1.89
2.03
2.16
2.25
2.17
2.33
2.48
2.59
WET
BULB
59.1
58.3
57.5
56.9
56.5
55.5
54.5
53.7
54.4
53.0
51.8
51.0
52.6
51.0
49.7
48.7
49.5
47.7
45.9
44.7
59.9
59.0
58.0
57.5
57.2
56.1
55.3
54.2
54.9
53.5
52.3
51.4
53.1
51.5
50.0
49.0
50.0
48.0
46.2
44.8
60.5
59.6
58.7
58.2
57.8
56.7
55.6
54.8
55.5
54.1
52.8
51.8
53.5
52.0
50.4
49.4
50.3
48.4
46.5
45.1
PER
SQ. FT.
1.14
1.23
1.31
1.37
1.40
1.51
1.61
1.68
1.62
1.74
1.85
1.93
1.79
1.92
2.04
2.13
2.06
2.22
2.36
2.46
1.19
1.28
1.36
1.42
1.47
1.58
1.68
1.75
1.69
1.82
1.94
2.02
1.87
2.01
2.14
2.23
2.16
2.32
2.47
2.58
1.25
1.34
1.43
1.49
1.53
1.65
1.76
1.83
1.77
1.90
2.02
2.11
1.96
2.11
2.25
2.34
2.26
2.43
2.59
2.70
WET
BULB
59.5
58.6
57.9
57.3
57.0
55.9
54.9
54.1
54.8
53.5
52.4
51.5
53.0
51.6
50.3
49.2
50.0
48.2
46.5
45.3
60.2
59.4
58.7
58.1
57.6
56.5
55.5
54.8
55.4
54.1
52.8
50.2
53.6
52.1
50.6
49.6
50.4
48.6
46.8
45.5
60.9
60.1
59.3
48.7
58.3
57.2
56.1
55.4
56.0
54.7
53.4
52.5
54.1
52.5
50.9
49.9
50.8
48.9
47.0
45.7
PER
SQ. FT.
1.17
1.26
1.34
1.40
1.45
1.56
1.66
1.73
1.67
1.80
1.92
2.00
1.85
1.99
2.12
2.21
2.15
2.31
2.46
2.56
1.23
1.32
1.41
1.47
1.52
1.63
1.74
1.81
1.75
1.88
2.00
2.09
1.94
2.09
2.23
2.32
2.25
2.42
2.58
2.69
1.28
1.38
1.47
1.53
1.58
1.70
1.81
1.89
1.83
1.97
2.10
2.19
2.03
2.18
2.32
2.42
2.35
2.53
2.69
2.81
WET
BULB
59.8
59.0
58.3
57.7
57.3
56.3
55.3
54.6
55.2
53.9
52.8
51.9
53.4
52.0
50.7
49.7
50.4
48.6
47.0
45.8
60.5
59.7
58.9
58.4
579
56.9
55.9
55.2
55.8
54.5
53.4
52.5
54.0
52.4
51.0
50.1
50.8
49.0
47.2
46.0
61.3
60.4
59.7
59.1
58.7
57.6
56.6
55.8
56.4
55.1
53.8
52.9
54.5
53.0
51.6
50.5
51.3
49.4
47.6
46.3
PER
SQ. FT.
1.20
1.29
1.37
1.43
1.49
1.60
1.70
1.78
1.72
1.85
1.97
2.05
1.92
2.06
2.19
2.29
2.23
2.40
2.56
2.66
1.26
1.35
1.44
1.50
1.55
1.67
1.78
1.85
1.81
1.94
2.07
2.15
2.01
2.16
2.30
2.40
2.33
2.51
2.67
2.79
1.31
1.41
1.50
1.57
1.63
1.75
1.86
1.94
1.89
2.03
2.16
2.25
2.10
2.26
2.41
2.51
2.45
2.63
2.80
2.92
WET
BULB
60.1
59.3
58.7
58.2
57.6
56.7
55.8
55.1
55.6
54.4
53.3
52.5
53.8
52.4
51.2
50.2
50.8
49.0
47.4
46.3
60.8
60.1
59.3
58.8
58.4
57.4
56.4
55.8
56.2
55.0
53.7
53.0
54.3
52.9
51.5
50.6
51.3
49.4
47.8
46.5
61.6
60.8
60.1
59.5
59.0
58.0
57.0
56.3
56.8
55.5
54.3
53.5
54.9
53.4
52.0
51.0
51.6
49.4
48.0
46.8
PER
SQ. FT.
1.23
1.32
1.41
1.47
1.53
1.64
1.75
1.82
1.77
1.90
2.02
2.11
1.98
2.13
2.27
2.36
2.32
2.49
2.65
2.76
1.28
1.38
1.47
1.53
1.59
1.71
1.82
1.90
1.85
1.99
2.12
2.21
2.07
2.23
2.37
2.48
2.42
2.60
2.77
2.89
1.35
1.45
1.54
1.61
1.66
1.70
1.91
2.00
1.93
2.08
2.22
2.31
2.17
2.33
2.48
2.59
2.53
2.72
2.90
3.02
WET
BULB
60.3
59.6
58.9
58.4
58.0
57.0
56.1
55.5
56.0
54.8
53.8
53.0
54.1
52.8
51.5
50.6
51.0
49.4
47.8
46.7
61.2
60.4
59.7
59.2
58.7
57.8
56.9
56.2
56.6
55.4
54.3
53.5
54.6
53.3-
52.0
51.0
51.6
49.8
48.2
47.0
61.9
61.1
60.4
59.9
59.5
58.4
57.4
56.7
57.3
56.0
54.8
54.0
55.3
53.8
52.5
51.5
52.0
50.2
48.5
47.3
PER
SQ. FT.
1.26
1.35
1.44
1.50
1.56
1.68
1.79
1.86
1.82
1.96
2.09
2.18
2.04
2.19
2.33
2.43
2.39
2.57
2.74
2.85
1.31
1.41
1.50
1.57
1.63
1.75
1.86
1.94
1.91
2.05
2.18
2.28
2.14
2.30
2.45
2.55
2.50
2.69
2.86
2.99
1.38
1.48
1.58
1.64
1.71
1.83
1.95
2.03
2.02
2.15
2.29
2.39
2.23
2.40
2.56
2.66
2.61
2.81
2.99
3.12
WET
BULB
60.6
59.9
59.2
58.8
58.3
57.4
56.5
55.9
56.3
55.1
54.0
53.3
54.4
53.2
52.0
51.1
51.4
49.8
48.2
47.2
61.4
60.7
60.0
59.5
59.0
58.1
57.3
56.6
56.9
55.7
54.7
53.8
55.0
53.6
52.4
51.5
51.9
50.2
48.7
47.4
62.1
61.4
60.7
60.2
59.8
58.8
57.9
57.2
57.5
56.3
55.2
54.3
55.7
54.2
52.9
52.0
52.4
50.7
49.0
47.8
PER
SQ. FT.
1.28
1.38
1.47
1.53
1.60
1.72
1.83
1.91
1.87
2.01
2.14
2.23
2.09
2.25
2.40
2.50
2.46
2.65
2.82
2.94
1.34
1.44
1.53
1.61
1.67
1.80
1.92
2.00
1.95
2.10
2.24
2.33
2.19
2.36
2.51
2.62
2.58
2.77
2.95
3.07
1.40
1.51
1.61
1.68
1.75
1.88
2.00
2.09
2.05
2.20
2.34
2.44
2.30
2.47
2.63
2.74
2.69
2.89
3.08
3.21
WET
BULB
60.8
60.1
59.5
59.1
58.6
57.7
56.8
56.2
56.5
55.4
54.4
53.7
54.8
53.5
52.3
51.5
51.8
50.2
48.7
47.6
61.6
60.9
60.3
59.7
59.3
58.4
57.5
56.9
57.2
56.1
55.0
54.3
55.4
54.1
52.8
51.9
52.3
50.6
49.1
48.0
62.4
61.7
61.0
60.5
60.0
59.1
58.2
57.5
57.8
56.7
55.6
54.8
55.9
54.6
53.3
52.4
52.8
51.1
49.5
48.3
PER
SQ. FT.
1.31
1.41
1.50
1.57
1.63
1.75
1.86
1.94
1.91
2.05
2.18
2.28
2.15
2.31
2.46
2.56
2.53
2.72
2.90
3.02
1.37
1.47
1.57
1.63
1.70
1.83
1.95
2.03
2.00
2.15
2.29
2.39
2.25
2.42
2.58
2.69
2.65
2.85
3.04
3.16
1.43
1.54
1.64
1.71
1.79
1.92
2.04
2.13
2.08
2.24
2.39
2.49
2.35
2.53
2.69
2.81
2.77
2.98
3.17
3.31
LVG.
WET
BULB
61.0
1.43
1.52
1.59
58.9
58.0
57.2
56.6
56.9
55.8
54.9
54.1
55.1
53.9
52.7
51.9
52.1
50.6
49.1
48.1
61.8
61.2
60.5
60.1
59.6
58.7
57.9
57.3
57.5
56.4
55.4
54.6
55.7
54.4
53.2
52.3
52.6
51.0
49.4
48.4
62.7
61.9
61.3
60.8
60.3
59.4
58.6
57.9
58.3
57.1
56.0
55.3
56.3
55.0
53.8
52.8
53.1
51.5
49.9
48.7
TONS
PER
SQ. FT.
1.33
1.43
1.52
1.59
1.66
1.79
1.90
1.98
1.95
2.10
2.24
2.33
2.19
2.36
2.51
2.62
2.59
2.79
2.97
3.10
1.40
1.50
1.60
1.67
1.74
1.87
1.99
2.08
2.05
2.20
2.34
2.44
2.30
2.47
2.63
2.74
2.72
2.92
3.11
3.24
1.46
1.57
1.67
1.74
1.87
1.95
2.08
2.16
2.14
2.30
2.45
2.55
2.40
2.58
2.75
2.86
2.84
3.05
3.25
3.39
LVG.
WET
BULB
61.3
60.6
60.1
59.6
59.1
58.3
57.5
57.0
57.2
56.1
55.1
54.5
55.5
54.2
53.1
52.3
52.5
51.0
49.5
48.5
62.0
61.4
60.8
60.3
59.9
59.0
58.2
57.6
57.8
56.7
55.8
55.0
56.0
54.8
53.6
52.8
53.0
51.4
49.9
48.9
62.8
62.2
61.5
61.1
60.7
59.7
58.8
58.4
58.5
57.4
56.4
55.6
56.7
55.4
54.2
53.4
53.5
51.9
50.4
49.2
- 16 -
Page 17
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 40°40°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
COIL FACE VELOCITY - FPM
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.27
1.37
1.46
1.52
1.55
1.67
1.78
1.85
1.79
1.92
2.04
2.13
1.97
2.12
2.26
2.35
2.26
2.43
2.59
2.70
1.33
1.43
1.52
1.59
1.62
1.74
1.85
1.93
1.86
2.00
2.13
2.22
2.06
2.21
2.35
2.45
2.36
2.54
2.71
2.82
1.39
1.49
1.59
1.65
1.69
1.82
1.94
2.02
1.94
2.09
2.23
2.32
2.14
2.30
2.45
2.55
2.46
2.65
2.82
2.94
WET
BULB
61.3
60.3
59.5
58.9
58.6
57.3
56.2
55.4
56.1
54.7
53.3
52.3
54.1
52.4
50.8
49.7
50.8
48.8
46.8
45.4
62.0
61.1
60.2
59.5
59.2
58.0
56.9
56.2
56.8
55.3
53.9
52.9
54.6
53.0
51.4
50.2
51.3
49.1
47.0
45.6
62.8
61.8
60.9
60.3
59.9
58.6
57.4
56.6
57.4
55.8
54.3
53.3
55.3
53.5
51.8
50.6
51.7
49.4
47.3
45.8
PER
SQ. FT.
1.30
1.40
1.49
1.55
1.60
1.72
1.83
1.91
1.85
1.99
2.12
2.21
2.05
2.20
2.34
2.44
2.36
2.54
2.71
2.82
1.36
1.46
1.55
1.62
1.67
1.80
1.92
2.00
1.93
2.07
2.20
2.30
2.14
2.30
2.45
2.55
2.46
2.65
2.82
2.94
1.42
1.53
1.63
1.70
1.75
1.88
2.00
2.09
2.01
2.16
2.30
2.40
2.23
2.40
2.56
2.66
2.57
2.76
2.94
3.06
WET
BULB
61.7
60.9
600
59.5
59.0
57.9
56.8
56.0
56.6
55.2
53.8
52.9
54.6
53.0
51.5
50.4
51.3
49.2
47.3
45.9
62.5
61.6
60.8
60.2
59.7
58.5
57.3
56.6
57.2
55.8
54.5
53.5
55.2
53.5
51.9
50.8
51.8
49.6
47.7
46.3
63.2
62.8
61.7
60.8
60.3
59.1
58.0
57.1
57.9
56.4
55.0
54.0
55.7
54.0
52.3
51.2
52.2
50.1
48.0
46.6
PER
SQ. FT.
1.34
1.44
1.53
1.60
1.66
1.78
1.90
1.98
1.92
2.06
2.19
2.29
2.12
2.28
2.43
2.53
2.46
2.64
2.81
2.93
1.40
1.50
1.60
1.67
1.73
1.86
1.98
2.06
2.00
2.15
2.29
2.39
2.21
2.38
2.53
2.64
2.57
2.76
2.94
3.06
1.46
1.57
1.67
1.74
1.80
1.94
2.07
2.15
2.08
2.24
2.39
2.49
2.31
2.48
2.64
2.75
2.68
2.88
3.07
3.20
WET
BULB
62.1
61.2
60.4
59.8
59.3
58.2
57.1
56.4
57.0
55.6
54.4
53.4
55.1
53.5
52.0
51.0
51.7
49.8
47.9
46.6
62.8
62.0
61.2
60.6
60.0
58.9
57.8
57.1
57.6
56.2
54.9
53.9
55.7
54.0
52.5
51.4
52.1
50.1
48.2
48.7
63.6
62.7
61.9
61.3
60.8
59.6
58.4
57.7
58.3
56.9
55.4
54.5
56.2
54.6
51.3
51.9
52.6
50.5
48.5
47.0
PER
SQ. FT.
1.37
1.47
1.57
1.63
1.70
1.83
1.95
2.03
1.97
2.12
2.26
2.35
2.19
2.36
2.51
2.62
2.55
2.74
2.92
3.04
1.43
1.54
1.64
1.71
1.78
1.91
2.03
2.12
2.06
2.21
2.35
2.45
2.29
2.46
2.62
2.73
2.67
2.87
3.06
3.19
1.50
1.61
1.71
1.79
1.85
1.99
2.12
2.21
2.15
2.31
2.46
2.56
2.39
2.57
2.74
2.85
2.78
2.99
3.18
3.32
WET
BULB
62.4
61.6
60.8
60.3
59.7
58.7
57.6
56.9
57.5
56.1
54.9
54.0
55.6
53.9
52.5
51.5
52.1
50.3
48.4
47.2
63.2
62.3
61.5
61.0
60.4
59.4
58.3
57.6
58.1
56.8
55.4
54.6
56.1
54.5
53.0
52.0
52.5
50.6
48.7
47.3
63.9
63.1
62.3
61.7
61.2
60.0
59.0
58.2
58.7
57.3
56.0
51.1
56.6
55.0
53.4
52.4
53.1
51.0
49.1
47.6
PER
SQ. FT.
1.40
1.51
1.61
1.68
1.74
1.87
1.99
2.08
2.03
2.18
2.32
2.42
2.26
2.43
2.59
2.70
2.64
2.84
3.02
3.15
1.47
1.58
1.68
1.75
1.82
1.96
2.09
2.18
2.11
2.27
2.42
2.52
2.36
2.54
2.71
2.82
2.76
2.97
3.16
3.30
1.53
1.65
1.76
1.83
1.90
2.04
2.17
2.26
2.20
2.37
2.52
2.63
2.46
2.65
2.82
2.94
2.88
3.10
3.30
3.44
WET
BULB
62.6
61.9
61.1
60.6
60.1
59.1
58.1
57.4
57.8
56.6
55.4
54.5
55.9
54.4
53.0
52.0
52.5
50.7
49.0
47.7
63.4
62.6
61.9
61.4
60.8
59.7
58.8
58.0
58.6
57.2
56.0
55.1
56.5
54.9
53.5
52.5
53.0
51.1
49.3
47.9
64.3
63.4
62.6
62.1
61.5
60.5
59.6
58.8
59.2
57.8
56.6
55.7
57.1
55.5
54.1
53.0
53.5
51.5
49.6
48.2
PER
SQ. FT.
1.44
1.55
1.65
1.72
1.79
1.92
2.04
2.13
2.08
2.24
2.39
2.49
2.33
2.51
2.67
2.79
2.73
2.94
3.13
3.26
1.50
1.61
1.71
1.79
1.86
2.00
2.13
2.22
2.18
2.34
2.49
2.60
2.44
2.62
2.79
2.91
2.86
3.07
3.27
3.41
1.56
1.68
1.79
1.86
1.94
2.09
2.23
2.32
2.27
2.44
2.60
2.71
2.54
2.73
2.91
3.03
2.98
3.20
3.41
3.55
WET
BULB
62.9
62.2
61.4
60.9
60.4
59.4
58.5
57.8
58.2
56.9
55.8
54.9
56.2
54.8
53.4
52.4
52.9
51.1
49.3
48.1
63.7
63.0
62.3
61.7
61.2
60.2
59.2
58.5
58.8
57.6
56.4
55.5
56.8
55.3
53.9
52.9
53.3
51.5
49.7
48.4
64.6
63.8
63.0
62.5
61.9
60.8
59.8
59.1
59.5
58.2
57.0
56.1
57.4
55.9
54.4
53.4
53.8
51.9
501
48.8
PER
SQ. FT.
1.46
1.57
1.67
1.74
1.82
1.96
2.09
2.18
2.13
2.29
2.44
2.54
2.40
2.58
2.75
2.86
2.81
3.02
3.22
3.35
1.53
1.64
1.75
1.82
1.91
2.05
2.18
2.28
2.23
2.40
2.56
2.66
2.50
2.69
2.86
2.99
2.94
3.16
3.37
3.51
1.59
1.71
1.82
1.90
1.99
2.14
2.28
2.38
2.33
2.50
2.66
2.78
2.60
2.80
2.98
3.11
3.06
3.29
3.50
3.65
WET
BULB
63.2
62.5
61.8
61.3
60.8
59.8
58.9
58.2
58.6
57.4
56.3
55.5
56.6
55.2
53.8
52.9
53.3
51.6
49.8
48.7
63.9
63.3
62.6
62.1
61.5
60.5
59.6
58.9
59.2
58.0
56.8
56.0
57.2
55.8
54.4
53.4
53.8
52.0
50.2
48.9
64.9
64.1
63.4
62.8
62.2
61.2
60.2
59.5
59.9
58.6
57.4
56.5
57.9
56.4
55.0
53.9
54.3
52.5
50.7
49.4
PER
SQ. FT.
1.50
1.61
1.71
1.79
1.86
2.00
2.13
2.22
2.18
2.34
2.49
2.60
2.46
2.64
2.81
2.93
2.89
3.11
3.31
3.45
1.56
1.68
1.79
1.86
1.94
2.09
2.23
2.32
2.28
2.45
2.61
2.72
2.57
2.76
2.94
3.06
3.02
3.25
3.46
3.61
1.63
1.75
1.86
1.94
2.03
2.18
2.32
2.42
2.37
2.55
2.73
2.84
2.68
2.88
3.07
3.20
3.15
3.39
3.61
3.76
LVG.
WET
BULB
63.4
62.7
62.1
61.5
61.1
60.1
59.3
58.6
58.9
57.8
56.7
55.9
56.9
55.6
54.3
53.4
53.7
51.9
50.3
49.1
64.3
63.5
62.8
62.4
61.8
60.9
59.9
59.3
59.6
58.4
57.2
56.4
57.5
56.2
54.8
53.9
54.2
52.4
50.7
49.5
65.1
64.3
63.6
63.1
62.5
61.6
61.6
60.0
60.3
59.1
57.8
57.0
58.2
56.7
55.3
54.3
54.7
52.9
51.1
49.9
TONS
PER
SQ. FT.
1.53
1.64
1.75
1.82
1.90
2.04
2.17
2.26
2.23
2.40
2.56
2.66
2.51
2.70
2.88
3.00
2.97
3.19
3.40
3.54
1.59
1.71
1.82
1.90
1.98
2.13
2.27
2.36
2.33
2.50
2.66
2.78
2.62
2.82
3.00
3.13
3.10
3.33
3.55
3.70
1.66
1.78
1.90
1.98
2.06
2.22
2.36
2.46
2.43
2.61
2.78
2.90
2.73
2.94
3.13
3.26
3.23
3.47
3.70
3.85
LVG.
WET
BULB
63.6
63.0
62.3
61.8
61.3
60.4
59.6
59.0
59.2
58.1
57.0
56.3
57.3
56.0
54.7
53.8
54.0
52.4
50.8
49.6
64.5
63.8
63.1
62.6
62.1
61.2
60.3
59.7
59.9
58.9
57.7
56.9
58.0
56.6
55.3
54.4
54.6
52.9
51.2
50.0
65.3
64.6
63.9
63.4
62.9
61.9
61.0
60.4
60.6
59.4
58.3
57.5
58.6
57.2
55.9
54.9
55.1
53.4
51.6
50.5
- 17 -
Page 18
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 45°45°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
.73
.79
.84
.88
.90
.97
1.03
1.08
1.04
1.12
1.19
1.24
1.14
1.23
1.31
1.37
1.31
1.41
1.50
1.57
.78
.84
.89
.93
.96
1.03
1.10
1.14
1.10
1.18
1.26
1.31
1.22
1.31
1.40
1.45
1.40
1.50
1.60
1.67
.83
.89
.95
.99
1.01
1.09
1.16
1.21
1.17
1.26
1.34
1.40
1.28
1.38
1.47
1.53
1.48
1.59
1.69
1.76
.87
.94
1.00
1.04
1.08
1.16
1.24
1.29
1.24
1.33
1.42
1.48
1.36
1.46
1.55
1.62
1.56
1.68
1.79
1.86
WET
BULB
58.1
57.5
57.0
56.6
56.3
55.6
55.0
54.4
54.8
54.0
53.2
52.6
53.7
52.7
51.8
51.1
51.8
50.6
49.6
48.7
58.8
58.2
57.7
57.2
56.9
56.2
55.4
55.0
55.4
54.6
53.7
53.1
54.1
53.1
52.1
51.5
52.1
50.9
49.7
48.9
59.5
58.9
58.3
57.8
57.6
56.8
56.1
55.5
56.0
55.0
54.1
53.4
54.8
53.7
52.7
52.0
52..5
51.3
50.1
49.2
60.2
59.5
59.0
58.6
58.1
57.3
56.5
56..0
56.5
55.5
54.6
53.9
55.2
54.1
53.1
52.3
53.0
51.6
50.3
49.5
PER
SQ. FT.
.76
.82
.87
.91
.93
1.00
1.07
1.11
1.07
1.15
1.22
1.28
1.19
1.28
1.36
1.42
1.37
1.47
1.57
1.63
.81
.87
.93
.97
.99
1.06
1.13
1.18
1.14
1.23
1.31
1.37
1.26
1.36
1.45
1.51
1.46
1.57
1.67
1.74
.86
.92
.98
1.02
1.05
1.13
1.20
1.25
1.21
1.30
1.38
1.44
1.34
1.44
1.53
1.60
1.54
1.66
1.77
1.84
.90
.97
1.03
1.08
1.11
1.19
1.27
1.32
1.27
1.37
1.46
1.52
1.41
1.52
1.62
1.69
1.63
1.75
1.86
1.94
WET
BULB
58.3
57.7
57.2
56.8
56.6
55.9
55.2
54.8
55.2
54.4
53.6
53.0
53.9
53.0
52.2
51.5
52.0
51.0
49.8
49.1
59.0
58.4
57.8
57.4
57.2
56.5
55.8
55.3
55.7
54.8
54.0
53.4
54.5
53.5
52.5
51.9
52.4
51.2
50.1
49.3
59.6
59.1
58.5
58.1
57.9
57.1
56.4
55.9
56.3
55.4
54.6
53.9
55.0
53.9
53.0
52.3
52.9
51.6
50.4
49.6
60.5
59.8
59.3
58.8
58.5
57.7
57.0
56.5
57.0
56.0
55.1
54.5
55.6
54.4
53.4
52.6
53.3
52.0
50.8
49.9
SQ. FT.
PER
.78
.84
.89
.93
.96
1.03
1.10
1.14
1.12
1.20
1.28
1.33
1.24
1.33
1.42
1.48
1.43
1.54
1.64
1.71
.83
.89
.95
.99
1.02
1.10
1.17
1.22
1.18
1.27
1.35
1.41
1.31
1.41
1.50
1.57
1.52
1.63
1.74
1.81
.87
.94
1.00
1.04
1.08
1.16
1.24
1.29
1.26
1.35
1.44
1.50
1.39
1.49
1.59
1.65
1.61
1.73
1.84
1.92
.93
1.00
1.07
1.11
1.14
1.23
1.31
1.37
1.32
1.42
1.51
1.58
1.47
1.58
1.68
1.75
1.70
1.83
1.95
2.03
LVG.
WET
BULB
58.5
57.9
57.5
57.1
56.8
56.2
55.5
55.1
55.3
54.5
53.8
53.3
54.2
53.3
52.4
51.7
52.3
51.1
50.1.
49.3
59.2
58.7
58.1
57.8
57.5
56.7
56.1
55.6
56.0
55.1
54.3
53.7
54.7
53.7
52.9
52.2
52.7
51.5
50.4
49.6
60.0
59.4
58.9
58.5
58.1
57.4
56.7
56.2
56.5
55.6
54.8
54.2
55.3
54.3
53.3
52.7
53.1
51.9
50.7
49.9
60.7
60.0
59.4
59.1
58.8
58.0
57.2
56.7
57.2
56.3
55.4
54.7
55.8
54.7
53.7
53.0
53.5
52.2
51.0
50.2
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
58.7
58.2
57.7
57.4
57.0
56.4
55.8
55.3
55.7
54.9
54.1
53.6
54.5
53.6
52.7
52.2
52.5
51.5
50.5
49.8
59.5
58.9
58.4
58.1
57.7
57.0
56.4
56.0
56.2
55.4
54.6
54.1
55.1
54.1
53.3
52.6
53.0
51.8
50.8
50.0
60.2
60.4
59.1
58.7
58.4
57.7
57.0
56.6
56.8
56.0
55.2
54.6
55.6
54.6
53.7
53.0
53.4
52.1
51.0
50.2
60.9
60.3
59.8
59.4
59.1
58.3
57.6
57.1
57.4
56.5
55.6
551
56.1
55.1
54.1
53.4
53.8
52.5
51.45-
0.5
TONS
PER
SQ. FT.
.82
.88
.94
.98
1.01
1.09
1.16
1.21
1.18
1.27
1.35
1.41
1.31
1.41
1.50
1.57
1.53
1.65
1.76
1.83
.86
.93
.99
1.03
1.08
1.16
1.24
1.29
1.25
1.34
1.43
1.49
1.40
1.50
1.60
1.67
1.64
1.76
1.87
1.95
.92
.99
1.05
1.10
1.14
1.23
1.31
1.37
1.32
1.42
1.51
1.58
1.48
1.59
1.69
1.76
1.73
1.86
1.98
2.06
.98
1.05
1.12
1.17
1.21
1.30
1.38
1.44
1.40
1.51
1.61
1.68
1.56
1.68
1.79
1.86
1.83
1.97
2.10
2.19
PER
SQ. FT.
.80
.86
.92
.95
.99
1.06
1.13
1.18
1.14
1.23
1.31
1.37
1.27
1.37
1.46
1.52
1.48
1.59
1.69
1.76
.85
.91
.97
1.01
1.05
1.13
1.20
1.25
1.22
1.31
1.40
1.45
1.35
1.45
1.54
1.61
1.57
1.69
1.80
1.88
.90
.97
1.03
1.08
1.11
1.19
1.27
1.32
1.29
1.39
1.48
1.54
1.43
1.54
1.64
1.71
1.67
1.80
1.92
2.00
.95
1.02
1.09
1.13
1.17
1.26
1.34
1.40
1.37
1.47
1.57
1.63
1.52
1.63
1.74
1.81
1.77
1.90
2.02
2.11
LVG.
WET
BULB
58.9
58.4
57.9
57.6
57.3
56.6
56.1
55.6
55.9
55.1
54.4
53.9
54.8
53.9
53.1
52.4
52.8
51.7
50.7
50.0
59.7
59.1
58.7
58.3
57.9
57.2
56.6
56.2
56.5
55.7
55.0
54.4
55.2
54.3
53.5
52.8
53.1
52.0
51.0
50.2
60.4
59.8
59.4
59.0
58.6
57.9
57.2
56.7
57.2
56.3
55.6
55.0
55.8
54.9
54.0
53.4
53.6
52.4
51.4
50.6
61.1
60.5
60.0
59.6
59.3
58.6
57.9
57.4
57.7
56.8
56.0
55.4
56.4
55.4
54.4
53.8
54.1
52.8
51.6
50.8
TONS
PER
SQ. FT.
.84
.90
.96
1.00
1.03
1.11
1.18
1.23
1.21
1.30
1.38
1.44
1.36
1.46
1.55
1.62
1.59
1.71
1.82
1.90
.88
.95
1.01
1.05
1.10
1.18
1.26
1.31
1.28
1.38
1.47
1.53
1.44
1.55
1.65
1.72
1.68
1.81
1.93
2.01
.94
1.01
1.08
1.12
1.16
1.25
1.33
1.39
1.37
1.47
1.57
1.63
1.53
1.64
1.75
1.82
1.79
1.92
2.04
2.13
1.00
1.07
1.14
1.19
1.23
1.32
1.41
1.47
1.44
1.55
1.65
1.72
1.62
1.74
1.85
1.93
1.89
2.03
2.16
2.25
LVG.
WET
BULB
59.0
58.6
58.1
57.8
57.5
56.9
56.4
56.0
56.1
55.4
54.7
54.2
54.9
54.0
53.3
52.7
52.9
51.9
50.9
50.2
59.9
59.3
58.9
58.6
58.2
57.6
56.9
56.5
56.8
56.0
55.2
54.7
55.5
54.6
53.7
53.1
53.5
52.3
51.3
50.6
60.6
60.0
59.6
59.2
58.9
58.2
57.6
57.1
57.3
56.5
55.7
55.2
56.0
55.1
54.2
53.6
53.8
52.7
51.7
50.9
61.3
60.8
60.2
59.9
59.6
58.9
58.2
57.7
58.0
57.1
56.3
55.7
56.6
55.6
54.7
54.0
54.3
53.1
52.0
51.2
TONS
PER
SQ. FT.
.86
.92
.98
1.02
1.06
1.14
1.21
1.27
1.24
1.33
1.42
1.48
1.40
1.50
1.60
1.67
1.64
1.76
1.87
1.95
.90
.97
1.03
1.08
1.13
1.21
1.29
1.34
1.32
1.42
1.51
1.58
1.48
1.59
1.69
1.76
1.74
1.87
1.99
2.08
.96
1.03
1.10
1.14
1.19
1.28
1.36
1.42
1.40
1.50
1.60
1.67
1.56
1.68
1.79
1.86
1.84
1.98
2.11
2.20
1.01
1.09
1.16
1.21
1.26
1.36
1.45
1.51
1.48
1.59
1.69
1.76
1.66
1.78
1.90
1.98
1.94
2.09
2.23
2.32
LVG.
WET
BULB
59.2
58.7
58.3
58.0
57.7
57.1
56.6
56.1
56.3
55.6
54.9
54.4
55.1
54.3
53.5
52.9
53.1
52.2
51.3
50.5
60.0
59.5
59.1
58.7
58.4
57.7
57.2
56.8
56.9
56.2
55.5
54.9
55.7
54.8
54.0
53.5
53.6
52.5
51.6
50.8
60.7
60.2
59.7
59.5
59.1
58.4
57.9
57.4
57.6
56.8
56.0
55.5
56.3
55.4
54.5
54.0
54.1
53.0
51.9
51.2
61.5
61.0
60.5
60.1
59.8
59.1
58.4
58.0
58.2
57.4
56.6
56.1
56.8
55.9
55.0
54.3
54.7
53.4
52.3
51.5
TONS
PER
SQ. FT.
.86
.93
.99
1.03
1.08
1.16
1.24
1.29
1.26
1.36
1.45
1.51
1.43
1.54
1.64
1.70
1.68
1.81
1.93
2.01
.92
.99
1.05
1.10
1.15
1.24
1.32
1.38
1.35
1.45
1.54
1.61
1.52
1.63
1.74
1.81
1.79
1.92
2.04
2.13
.98
1.05
1.12
1.17
1.22
1.31
1.40
1.45
1.42
1.53
1.63
1.70
1.61
1.73
1.84
1.92
1.90
2.04
2.17
2.26
1.03
1.11
1.18
1.23
1.29
1.39
1.48
1.54
1.51
1.62
1.73
1.80
1.70
1.83
1.95
2.03
2.00
2.15
2.29
2.39
LVG.
WET
BULB
59.4
59.0
58.5
58.2
57.9
57.3
56.7
56.4
56.6
55.8
55.2
54.7
55.3
54.5
53.7
53.3
53.4
52.4
51.4
50.8
60.2
59.7
59.3
58.9
58.6
57.9
57.4
56.9
57.1
56.5
55.8
55.2
55.9
55.1
54.2
53.7
53.8
52.8
51.9
51.2
60.9
60.4
60.0
59.6
59.3
58.6
58.0
57.6
57.9
57.1
56.3
55.8
56.5
55.6
54.8
54.2
54.3
53.2
52.2
51.5
61.7
61.2
60.7
60.4
60.0
59.3
58.7
58.2
58.5
57.7
56.9
56.4
57.1
56.1
55.3
54.6
54.9
53.7
52.6
51.8
SQ. FT.
TONS
PER
.88
.95
1.01
1.05
1.11
1.19
1.27
1.32
1.29
1.39
1.48
1.54
1.46
1.57
1.67
1.74
1.72
1.85
1.97
2.05
.94
1.01
1.08
1.12
1.17
1.26
1.34
1.40
1.38
1.48
1.58
1.64
1.54
1.66
1.77
1.84
1.83
1.97
2.10
2.19
1.00
1.07
1.14
1.19
1.25
1.34
1.43
1.49
1.46
1.57
1.67
1.74
1.64
1.76
1.87
1.95
1.94
2.09
2.23
2.32
1.05
1.13
1.20
1.25
1.31
1.41
1.50
1.57
1.54
1.66
1.77
1.84
1.74
1.87
1.99
2.08
2.06
2.21
2.35
2.45
LVG.
WET
BULB
59.5
59.1
58.7
58.4
58.0
57.4
56.9
56.6
56.8
56.1
55.4
55.0
55.6
54.9
54.0
53.5
53.7
52.7
51.8
51.1
60.3
59.8
59.4
59.1
58.8
58.2
57.6
57.2
57.3
56.6
55.9
55.5
56.2
55.4
54.6
54.1
54.1
53.1
52.1
51.4
61.0
60.6
60.1
59.8
59.5
58.8
58.2
57.8
58.0
57.2
56.6
56.1
56.8
55.9
55.1
54.6
54.6
53.5
52.5
51.8
61.8
61.4
60.9
60.6
60.2
59.5
59.0
58.5
58.7
57.9
57.1
56.6
57.3
56.4
55.6
54.9
55.1
54.0
52.9
52.2
- 18 -
Page 19
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 45°45°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
.93
1.00
1.07
1.11
1.13
1.22
1.30
1.35
1.30
1.40
1.49
1.55
1.44
1.55
1.65
1.72
1.66
1.78
1.90
1.98
.98
1.05
1.12
1.17
1.20
1.29
1.37
1.43
1.38
1.48
1.58
1.64
1.52
1.63
1.74
1.81
1.74
1.87
1.99
2.08
1.03
1.11
1.18
1.23
1.26
1.35
1.44
1.50
1.45
1.56
1.66
1.73
1.59
1.71
1.82
1.90
1.83
1.97
2.10
2.19
WET
BULB
60.9
60.2
59.5
59.1
58.9
58.0
57.2
56.6
57.2
56.1
55.2
54.5
55.7
54.5
53.4
52.6
53.3
51.9
50.5
49.5
61.6
60.9
60.2
59.7
59.5
58.6
57.7
57.1
57.6
56.6
55.5
54.9
56.2
55.0
53.9
53.0
53.9
52.3
50.9
49.9
62.3
61.6
60.9
60.4
60.1
59.2
58.3
57.7
58.2
57.1
56.1
55.3
56.8
55.5
54.3
53.4
54.2
52.7
51.1
50.2
PER
SQ. FT.
.95
1.02
1.09
1.13
1.17
1.26
1.34
1.40
1.35
1.45
1.54
1.61
1.50
1.61
1.71
1.79
1.72
1.85
1.97
2.05
1.00
1.08
1.15
1.20
1.24
1.33
1.42
1.48
1.42
1.53
1.63
1.70
1.57
1.69
1.80
1.88
1.81
1.95
2.08
2.16
1.06
1.14
1.21
1.27
1.30
1.40
1.49
1.55
1.50
1.61
1.71
1.79
1.66
1.78
1.90
1.98
1.92
2.06
2.19
2.29
WET
BULB
61.2
60.6
59.9
59.6
59.2
58.3
57.6
57.0
57.5
56.5
55.6
54.9
56.0
54.9
53.8
53.0
53.7
52.3
51.0
50.1
62.0
61.2
60.6
60.1
59.8
58.9
58.1
57.5
58.1
57.0
56.0
55.3
56.6
55.4
54.3
53.5
54.2
52.7
51.3
50.4
62.6
61.9
61.3
60.8
60.5
59.6
58.7
58.2
58.6
57.6
56.6
55.8
57.1
55.9
54.7
53.8
54.5
53.0
51.6
50.5
PER
SQ. FT.
.98
1.05
1.12
1.17
1.21
1.30
1.38
1.44
1.40
1.50
1.60
1.67
1.55
1.67
1.78
1.85
1.79
1.93
2.06
2.14
1.03
1.11
1.18
1.23
1.27
1.37
1.46
1.52
1.47
1.58
1.68
1.75
1.64
1.76
1.87
1.95
1.89
2.03
2.16
2.25
1.09
1.17
1.25
1.30
1.34
1.44
1.53
1.60
1.55
1.67
1.78
1.85
1.72
1.85
1.97
2.05
1.99
2.14
2.28
2.38
LVG.
WET
BULB
61.4
60.8
60.2
59.8
59.4
58.8
57.9
57.4
57.7
56.8
55.9
55.2
56.3
55.2
54.1
53.4
54.0
52.6
51.3
50.5
62.2
61.5
60.9
60.5
60.1
59.3
58.5
57.9
58.4
57.4
56.5
55.8
56.8
55.7
54.6
53.9
54.4
53.1
51.7
50.8
62.9
62.2
61.6
61.1
60.8
59.9
59.1
58.5
59.0
57.9
56.9
56.2
57.4
56.2
55.1
54.3
54.9
53.4
52.0
51.0
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
61.7
61.0
60.5
60.1
59.7
59.0
58.2
57.7
58.1
57.1
56.2
55.6
56.7
55.6
54.6
53.8
54.3
53.0
51.8
50.9
62.4
61.8
61.2
60.7
60.4
59.6
58.8
58.2
58.7
57.7
56.8
56.1
57.3
56.1
55.1
54.3
54.8
53.4
52.0
51.2
63.1
62.5
61.9
61.5
61.1
60.3
59.4
58.9
59.3
58.3
57.3
56.6
57.7
56.6
55.5
54.7
55.3
53.8
52.5
51.5
TONS
PER
SQ. FT.
1.03
1.11
1.18
1.23
1.27
1.37
1.46
1.52
1.48
1.59
1.69
1.76
1.66
1.78
1.90
1.98
1.93
2.08
2.22
2.31
1.09
1.17
1.25
1.30
1.34
1.44
1.53
1.60
1.56
1.68
1.79
1.86
1.74
1.87
1.99
2.08
2.04
2.19
2.33
2.43
1.14
1.23
1.31
1.37
1.41
1.52
1.62
1.69
1.64
1.76
1.87
1.95
1.83
1.97
2.10
2.19
2.14
2.30
2.45
2.55
PER
SQ. FT.
1.00
1.08
1.15
1.20
1.24
1.33
1.42
1.48
1.44
1.55
1.65
1.72
1.60
1.72
1.83
1.91
1.86
2.00
2.13
2.22
1.06
1.14
1.21
1.27
1.31
1.41
1.50
1.57
1.52
1.63
1.74
1.81
1.68
1.81
1.93
2.01
1.96
2.11
2.25
2.34
1.12
1.20
1.28
1.33
1.38
1.48
1.58
1.64
1.60
1.72
1.83
1.91
1.78
1.91
2.03
2.12
2.06
2.22
2.36
2.46
LVG.
WET
BULB
61.9
61.2
60.7
60.3
60.0
59.2
58.5
58.0
58.4
57.4
56.6
56.0
56.9
55.9
54.8
54.1
54.6
53.2
52.0
51.1
62.6
62.0
61.4
61.0
60.7
59.9
59.2
58.6
59.0
58.0
57.1
56.5
57.5
56.4
55.4
54.6
55.0
53.6
52.4
51.5
63.4
62.7
62.2
61.7
61.4
60.6
59.8
59.2
59.6
58.7
57.8
57.1
58.1
56.9
55.9
55.1
55.5
54.1
52.8
51.9
TONS
PER
SQ. FT.
1.05
1.13
1.20
1.25
1.30
1.40
1.49
1.55
1.53
1.64
1.75
1.82
1.70
1.83
1.95
2.03
2.00
2.15
2.28
2.38
1.11
1.19
1.27
1.32
1.37
1.47
1.57
1.63
1.61
1.73
1.84
1.92
1.79
1.93
2.06
2.14
2.10
2.26
2.41
2.51
1.16
1.25
1.33
1.39
1.44
1.55
1.65
1.72
1.69
1.82
1.94
2.02
1.89
2.03
2.16
2.25
2.21
2.38
2.53
2.64
LVG.
WET
BULB
62.1
61.5
61.0
60.6
60.3
59.5
58.9
58.4
58.5
57.7
56.8
56.3
57.2
56.2
55.2
54.5
54.8
53.5
52.4
51.5
62.8
62.3
61.7
61.3
61.0
60.2
59.5
59.0
59.2
58.3
573.4
56.8
57.8
56.7
55.7
55.0
55.3
54.0
52.7
51.8
63.7
63.0
62.5
62.1
61.7
60.9
60.2
59.6
59.9
58.9
58.0
57.3
58.4
57.2
56.2
55.5
55.8
54.4
53.1
52.2
TONS
PER
SQ. FT.
1.07
1.15
1.22
1.28
1.33
1.43
1.52
1.59
1.56
1.68
1.79
1.86
1.75
1.88
2.00
2.09
2.06
2.21
2.35
2.45
1.13
1.21
1.29
1.34
1.40
1.51
1.61
1.68
1.65
1.77
1.89
1.96
1.84
1.98
2.11
2.20
2.17
2.33
2.48
2.59
1.19
1.28
1.36
1.42
1.48
1.59
1.69
1.76
1.73
1.86
1.98
2.06
1.94
2.09
2.23
2.32
2.28
2.45
2.61
2.72
LVG.
WET
BULB
62.3
61.7
61.3
60.8
60.5
59.8
59.1
58.6
58.9
58.0
57.1
56.6
57.4
56.4
55.5
54.8
55.1
53.8
52.7
51.9
63.1
62.5
62.0
61.6
61.2
60.4
59.7
59.2
59.5
58.6
57.7
57.2
58.1
57.0
56.0
55.3
55.6
54.3
53.1
52.2
63.8
63.2
62.7
62.3
61.9
61.1
60.4
59.9
60.2
59.2
58.4
57.8
58.6
57.5
56.5
55.8
56.1
54.7
53.5
52.6
TONS
PER
SQ. FT.
1.09
1.17
1.25
1.30
1.36
1.46
1.55
1.62
1.59
1.71
1.82
1.90
1.79
1.93
2.06
2.14
2.11
2.27
2.42
2.52
1.15
1.24
1.32
1.38
1.43
1.54
1.64
1.71
1.68
1.81
1.93
2.01
1.89
2.03
2.16
2.25
2.23
2.40
2.56
2.66
1.21
1.30
1.38
1.44
1.51
1.62
1.73
1.80
1.77
1.90
2.02
2.11
1.99
2.14
2.28
2.38
2.34
2.52
2.68
2.80
LVG.
WET
BULB
62.5
62.0
61.4
61.1
60.7
60.0
59.4
58.9
59.1
58.3
57.5
56.9
57.7
56.7
55.8
55.2
55.4
54.2
53.0
52.2
63.3
62.7
62.2
61.8
61.4
60.7
60.0
59.6
59.8
58.9
58.0
57.4
58.3
57.3
56.4
55.7
55.8
54.6
53.3
52.5
64.0
63.5
63.0
62.6
62.1
61.4
60.7
60.2
60.4
59.5
58.7
58.1
58.9
57.9
56.8
56.1
56.4
55.1
53.8
52.9
TONS
PER
SQ. FT.
1.11
1.19
1.27
1.32
1.39
1.49
1.59
1.65
1.63
1.75
1.86
1.94
1.83
1.97
2.10
2.19
2.17
2.33
2.48
2.59
1.17
1.26
1.34
1.40
1.46
1.57
1.67
1.74
1.72
1.85
1.97
2.05
1.93
2.08
2.22
2.31
2.28
2.45
2.61
2.72
1.24
1.33
1.42
1.48
1.53
1.65
1.76
1.83
1.80
1.94
2.07
2.15
2.03
2.18
2.32
2.42
2.40
2.58
2.75
2.86
LVG.
WET
BULB
62.7
62.2
61.7
61.2
60.8
60.2
59.6
59.2
59.3
58.5
57.8
57.2
58.0
57.0
56.1
55.5
55.6
54.4
53.3
52.5
63.4
62.9
62.4
62.0
61.6
60.9
60.3
59.9
60.0
59.1
58.3
57.8
58.6
57.6
56.6
56.0
56.2
55.0
53.8
53.0
64.2
63.6
63.1
62.7
62.4
61.7
61.0
60.5
60.7
59.8
59.0
58.4
59.2
58.2
57.2
56.6
56.7
55.4
54.2
53.4
- 19 -
Page 20
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-12 - 45°45°
TABLE 3 8°F SUPER HEAT
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
COIL FACE VELOCITY - FPM
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.08
1.16
1.24
1.29
1.32
1.42
1.51
1.58
1.52
1.63
1.74
1.81
1.67
1.80
1.92
2.00
1.93
2.07
2.20
2.30
1.13
1.22
1.30
1.35
1.39
1.49
1.59
1.65
1.60
1.72
1.83
1.91
1.76
1.89
2.01
2.10
2.03
2.18
2.32
2.42
1.19
1.28
1.36
1.42
1.45
1.56
1.66
1.73
1.67
1.80
1.92
2.00
1.84
1.98
2.11
2.20
2.12
2.28
2.43
2.53
WET
BULB
63.1
62.3
61.6
61.1
60.8
59.9
59.0
58.3
58.9
57.7
56.6
55.9
57.3
56.0
54.7
53.8
54.6
53.0
51.5
50.4
63.9
63.1
62.3
61.8
61.5
60.5
59.5
58.9
59.4
58.2
57.1
56.3
57.8
56.5
55.2
54.2
55.0
53.3
51.7
50.5
64.6
63.8
63.0
62.5
62.2
61.2
60.2
59.5
60.1
58.8
57.6
56.8
58.4
57.0
55.6
54.6
55.5
53.7
52.0
50.9
PER
SQ. FT.
1.11
1.19
1.27
1.32
1.37
1.47
1.57
1.63
1.57
1.69
1.80
1.88
1.74
1.87
1.99
2.08
2.01
2.16
2.30
2.40
1.16
1.25
1.33
1.39
1.43
1.54
1.64
1.71
1.66
1.78
1.90
1.98
1.83
1.97
2.10
2.19
2.11
2.27
2.42
2.52
1.22
1.31
1.40
1.45
1.50
1.61
1.71
1.79
1.73
1.86
1.98
2.06
1.92
2.06
2.19
2.29
2.21
2.38
2.53
2.64
WET
BULB
63.4
62.7
62.0
61.6
61.1
60.2
59.3
58.7
59.3
58.2
57.1
56.3
57.7
56.4
55.2
54.3
55.0
53.4
51.9
50.8
64.2
63.4
62.8
62.2
61.9
60.9
60.0
59.3
59.8
58.7
57.5
56.7
58.2
56.8
55.6
54.6
55.4
53.8
52.2
51.1
64.9
64.2
63.4
63.0
62.6
61.6
60.7
60.0
60.5
59.3
58.2
57.4
58.7
57.4
56.1
55.1
55.9
54.2
52.5
51.4
PER
SQ. FT.
1.14
1.23
1.31
1.37
1.40
1.51
1.61
1.68
1.63
1.75
1.86
1.94
1.80
1.94
2.07
2.15
2.09
2.25
2.40
2.50
1.20
1.29
1.37
1.43
1.48
1.59
1.69
1.76
1.71
1.84
1.96
2.04
1.90
2.04
2.17
2.26
2.19
2.36
2.51
2.62
1.26
1.35
1.44
1.50
1.55
1.67
1.77
1.84
1.79
1.93
2.06
2.14
1.99
2.14
2.28
2.38
2.31
2.48
2.64
2.75
WET
BULB
63.7
63.0
62.3
61.8
61.5
60.6
59.7
59.1
59.6
58.5
57.5
56.8
58.1
56.8
55.6
54.8
55.4
53.8
52.3
51.3
64.4
63.7
63.1
62.6
62.2
61.2
60.4
59.8
60.2
59.1
58.0
57.3
58.5
57.3
56.1
55.2
55.9
54.2
52.7
51.6
65.2
64.5
63.8
63.3
62.8
61.9
61.0
60.4
60.9
59.6
58.5
57.8
59.1
57.8
56.5
55.5
56.2
54.6
53.0
51.9
PER
SQ. FT.
1.17
1.26
1.34
1.40
1.44
1.55
1.65
1.72
1.67
1.80
1.92
2.00
1.87
2.01
2.14
2.23
2.18
2.34
2.49
2.60
1.23
1.32
1.41
1.47
1.52
1.63
1.74
1.81
1.76
1.89
2.01
2.10
1.96
2.11
2.25
2.34
2.28
2.45
2.61
2.72
1.28
1.38
1.47
1.53
1.59
1.71
1.82
1.90
1.84
1.98
2.11
2.20
2.06
2.21
2.35
2.45
2.39
2.57
2.74
2.85
WET
BULB
63.9
63.3
62.6
62.2
61.9
61.0
60.2
59.6
60.0
58.9
57.9
57.2
58.3
57.1
56.0
55.2
55.6
54.1
52.7
51.6
64.7
64.0
63.3
62.9
62.5
61.6
60.7
60.2
60.6
59.5
58.5
57.7
58.9
57.6
56.4
55.6
56.2
54.6
53.1
52.1
65.5
64.8
64.1
63.7
63.2
62.3
61.4
60.8
61.3
60.1
59.0
58.3
59.5
58.2
57.0
56.1
56.6
55.0
53.4
52.4
PER
SQ. FT.
1.20
1.29
1.37
1.43
1.48
1.59
1.69
1.76
1.72
1.85
1.97
2.05
1.93
2.07
2.20
2.30
2.25
2.42
2.58
2.69
1.26
1.35
1.44
1.50
1.55
1.67
1.78
1.85
1.81
1.95
2.08
2.16
2.00
2.18
2.32
2.42
2.36
2.54
2.71
2.82
1.32
1.42
1.51
1.58
1.63
1.75
1.86
1.94
1.90
2.04
2.17
2.26
2.12
2.28
2.43
2.53
2.48
2.67
2.84
2.96
WET
BULB
64.2
63.5
62.9
62.5
62.1
61.3
60.5
60.0
60.3
59.3
58.3
57.7
58.6
57.5
56.4
55.6
56.0
54.5
53.1
52.1
65.0
64.3
63.7
63.2
62.9
62.0
61.1
60.6
60.9
59.8
58.8
58.2
59.2
58.0
56.8
56.0
56.5
54.9
53.4
52.5
65.7
65.0
64.4
63.9
63.5
62.7
61.8
61.2
61.5
60.6
59.5
58.7
59.8
58.6
57.3
56.5
56.9
55.3
53.8
52.8
PER
SQ. FT.
1.23
1.32
1.41
1.47
1.52
1.63
1.74
1.81
1.78
1.91
2.03
2.12
1.99
2.14
2.28
2.38
2.33
2.50
2.66
2.78
1.28
1.38
1.47
1.53
1.59
1.71
1.82
1.90
1.86
2.00
2.13
2.22
2.08
2.24
2.39
2.49
2.44
2.62
2.79
2.91
1.35
1.45
1.54
1.61
1.66
1.79
1.91
1.99
1.95
2.10
2.24
2.33
2.19
2.35
2.50
2.61
2.56
2.75
2.93
3.05
WET
BULB
64.4
63.8
63.2
62.7
62.4
61.6
60.8
60.3
60.5
59.5
58.6
57.9
58.9
57.7
56.6
55.8
56.2
54.8
53.5
52.5
65.2
64.6
63.9
63.5
63.1
62.3
61.5
60.9
61.2
60.2
59.2
58.5
59.6
58.4
57.2
56.4
56.8
55.3
53.9
52.9
66.0
65.3
64.7
64.2
63.9
63.0
62.1
61.6
61.9
60.8
59.7
59.1
60.1
58.9
57.8
56.9
57.3
55.8
54.3
53.2
PER
SQ. FT.
1.25
1.34
1.43
1.49
1.55
1.67
1.78
1.85
1.81
1.95
2.08
2.16
2.04
2.19
2.33
2.43
2.39
2.57
2.74
2.85
1.31
1.41
1.50
1.57
1.63
1.75
1.86
1.94
1.91
2.05
2.18
2.28
2.14
2.30
2.45
2.55
2.51
2.70
2.88
3.00
1.38
1.48
1.58
1.64
1.71
1.84
1.96
2.04
2.00
2.15
2.29
2.39
2.24
2.41
2.57
2.68
2.63
2.83
3.01
3.14
WET
BULB
64.6
64.0
63.4
63.1
62.7
61.8
61.1
60.6
60.9
59.9
59.0
58.4
59.2
58.1
57.1
56.3
56.6
55.2
53.9
53.0
65.4
64.8
64.2
63.8
63.3
62.6
61.8
61.3
61.5
60.5
59.6
58.9
59.9
58.7
57.6
56.8
57.1
55.7
54.3
53.3
66.2
65.5
64.9
64.5
64.1
63.2
62.4
61.9
62.2
61.1
60.1
59.4
60.5
59.3
58.1
57.3
57.7
56.2
54.7
53.7
PER
SQ. FT.
1.27
1.37
1.46
1.52
1.59
1.71
1.82
1.90
1.86
2.00
2.13
2.22
2.09
2.25
2.40
2.50
2.46
2.65
2.82
2.94
1.34
1.44
1.53
1.60
1.66
1.79
1.91
1.99
1.95
2.10
2.24
2.33
2.19
2.36
2.51
2.62
2.59
2.78
2.96
3.09
1.40
1.51
1.61
1.68
1.75
1.88
2.00
2.09
2.05
2.20
2.34
2.44
2.31
2.48
2.64
2.75
2.72
2.92
3.11
3.24
LVG.
WET
BULB
64.8
64.2
63.7
63.3
62.8
62.1
61.3
60.8
61.1
60.1
59.3
58.6
59.5
58.4
57.3
56.6
56.9
55.5
54.2
53.3
65.5
65.0
64.4
64.0
63.6
62.8
62.0
61.5
61.8
60.8
59.8
59.2
60.2
59.0
58.0
57.2
57.4
56.0
54.7
53.6
66.4
65.8
65.2
64.7
64.3
63.5
62.7
62.2
62.4
61.4
60.5
59.8
60.7
59.6
58.5
57.7
57.9
56.4
55.0
54.0
TONS
PER
SQ. FT.
1.29
1.39
1.48
1.54
1.62
1.74
1.85
1.93
1.90
2.04
2.17
2.26
2.14
2.30
2.45
2.55
2.52
2.71
2.89
3.01
1.36
1.46
1.55
1.62
1.70
1.83
1.95
2.03
1.99
2.14
2.28
2.38
2.24
2.41
2.57
2.68
2.65
2.85
3.04
3.16
1.42
1.53
1.63
1.70
1.78
1.91
2.03
2.12
2.09
2.25
2.40
2.50
2.35
2.53
2.69
2.81
2.78
2.99
3.18
3.32
LVG.
WET
BULB
65.0
64.5
63.9
63.6
63.1
62.3
61.7
61.1
61.3
60.4
59.6
59.0
59.8
58.8
57.7
57.0
57.2
55.9
54.6
53.7
65.8
65.2
64.7
64.3
63.8
63.1
62.3
61.8
62.1
61.1
60.2
59.6
60.5
59.4
58.3
57.6
57.8
56.4
55.0
54.1
66.7
66.0
65.5
65.1
64.6
63.8
63.1
62.5
62.7
61.7
60.8
60.2
61.1
59.9
58.9
58.1
58.3
56.8
55.5
54.5
- 20 -
Page 21
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 35°35°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.25
1.35
1.43
1.49
1.45
1.56
1.65
1.73
1.66
1.78
1.89
1.98
1.83
1.97
2.08
2.18
2.09
2.24
2.38
2.49
1.31
1.41
1.49
1.56
1.51
1.63
1.73
1.81
1.73
1.87
1.98
2.07
1.91
2.05
2.18
2.28
2.18
2.34
2.49
2.60
1.37
1.47
1.56
1.63
1.58
1.70
1.80
1.89
1.81
1.95
2.07
2.16
2.00
2.15
2.28
2.38
2.28
2.45
2.60
2.72
1.43
1.53
1.63
1.70
1.65
1.77
1.88
1.97
1.89
2.03
2.16
2.26
2.08
2.24
2.37
2.48
2.38
2.55
2.71
2.84
WET
BULB
52.5
51.4
50.4
49.6
50.2
48.8
47.7
46.7
47.6
46.0
44.5
43.4
45.4
43.6
41.9
40.6
41.9
39.7
37.7
36.0
53.1
52.0
51.0
50.2
50.8
49.4
48.2
47.2
48.1
46.4
44.9
43.7
45.8
43.9
42.2
40.8
42.2
39.9
37.8
36.1
53.8
52.6
51.6
50.8
51.4
49.9
48.7
47.6
48.6
46.9
45.3
44.1
46.3
44.3
42.5
41.1
42.5
40.1
38.0
36.1
54.5
53.3
52.2
51.4
52.0
50.5
49.2
48.1
49.1
47.3
45.8
44.4
46.7
44.7
42.8
41.3
42.8
40.3
38.1
36.2
PER
SQ. FT.
1.29
1.39
1.47
1.54
1.49
1.61
1.70
1.78
1.71
1.84
1.95
2.04
1.90
2.04
2.16
2.27
2.17
2.34
2.48
2.59
1.35
1.45
1.54
1.61
1.56
1.68
1.78
1.86
1.79
1.92
2.04
2.14
1.98
2.13
2.26
2.37
2.27
2.44
2.59
2.71
1.41
1.51
1.60
1.68
1.63
1.75
1.86
1.95
1.87
2.01
2.13
2.23
2.07
2.23
2.36
2.47
2.37
2.55
2.70
2.83
1.47
1.58
1.67
1.77
1.70
1.83
1.94
2.03
1.95
2.10
2.22
2.33
2.16
2.32
2.46
2.58
2.47
2.66
2.82
2.95
WET
BULB
52.9
51.8
50.9
50.2
50.6
49.4
48.3
47.3
48.2
46.6
45.3
44.1
45.9
44.2
42.6
41.3
42.5
40.3
38.4
36.8
53.6
52.5
51.5
50.7
51.3
49.9
48.8
47.8
48.7
47.1
45.7
44.5
46.4
44.6
42.9
41.5
42.8
40.6
38.6
36.9
54.3
53.2
52.2
51.4
51.9
50.5
49.3
48.3
49.2
47.6
46.1
44.9
46.8
44.9
43.2
41.8
43.1
40.8
38.7
36.9
55.0
53.8
52.8
52.0
52.5
51.1
49.9
48.8
49.8
48.1
46.6
45.3
47.3
45.3
43.6
42.1
43.5
41.0
38.9
37.0
PER
SQ. FT.
1.32
1.42
1.51
1.58
1.54
1.65
1.75
1.84
1.77
1.91
2.02
2.12
1.97
2.12
2.24
2.35
2.26
2.43
2.58
2.70
1.38
1.49
1.58
1.65
1.61
1.73
1.83
1.92
1.85
1.99
2.11
2.21
2.06
2.21
2.35
2.46
2.36
2.54
2.69
2.82
1.45
1.56
1.65
1.73
1.68
1.91
1.92
2.01
1.94
2.08
2.21
2.31
2.15
2.31
2.45
2.56
2.47
2.65
2.81
2.95
1.51
1.62
1.72
1.80
1.75
1.88
2.00
2.09
2.02
2.17
2.30
2.41
2.24
2.41
2.56
2.68
2.57
2.77
2.94
3.07
LVG.
WET
BULB
53.3
52.3
51.4
50.7
51.1
49.9
48.8
47.9
48.6
47.1
45.8
44.7
46.4
44.7
43.2
41.9
43.0
40.9
39.0
37.4
54.0
53.0
52.0
51.3
51.7
50.5
49.4
48.4
49.1
47.6
46.2
45.1
46.9
45.1
43.5
42.2
43.3
41.1
39.2
37.5
54.7
53.6
52.7
51.9
52.4
51.1
49.9
48.9
49.7
48.1
46.7
45.5
47.4
45.5
43.9
42.5
43.7
41.4
39.4
37.6
55.4
54.3
53.3
52.5
53.0
51.7
50.5
49.5
50.2
48.6
47.1
45.9
47.8
45.9
44.2
42.8
44.0
41.6
39.5
37.7
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
53.7
52.7
51.9
51.2
51.5
50.3
49.3
48.4
49.1
47.6
46.4
45.3
46.9
54.2
43.8
42.5
43.4
41.4
39.6
38.0
54.4
53.4
52.6
51.8
52.2
50.9
49.9
49.0
49.6
48.1
46.8
45.7
47.4
45.7
44.1
42.8
43.8
41.7
39.8
38.1
55.1
54.1
53.2
52.5
52.8
51.5
50.4
49.5
50.2
48.6
47.3
46.1
47.9
46.1
44.5
43.1
44.1
41.9
40.0
38.3
55.9
54.8
53.9
53.1
53.5
52.2
51.0
50.0
50.8
49.2
47.8
46.6
48.4
46.5
44.9
43.5
44.5
42.2
40.2
38.4
TONS
PER
SQ. FT.
1.38
1.49
1.58
1.65
1.63
1.75
1.86
1.94
1.89
2.03
2.15
2.25
2.10
2.26
2.39
2.50
2.44
2.62
2.78
2.91
1.45
1.56
1.65
1.73
1.70
1.83
1.94
2.03
1.97
2.12
2.25
2.35
2.19
2.36
2.50
2.62
2.55
2.74
2.90
3.04
1.51
1.63
1.72
1.81
1.78
1.91
2.03
2.12
2.06
2.21
2.35
2.46
2.29
2.46
2.61
2.73
2.66
2.86
3.03
3.18
1.58
1.70
1.80
1.88
1.85
1.99
2.12
2.21
2.15
2.31
2.45
2.56
2.39
2.57
2.72
2.85
2.78
2.98
3.16
3.31
PER
SQ. FT.
1.35
1.46
1.54
1.62
1.58
1.70
1.80
1.89
1.83
1.97
2.08
2.18
2.03
2.19
2.32
2.43
2.35
2.52
2.68
2.80
1.42
1.52
1.61
1.69
1.65
1.78
1.89
1.97
1.91
2.05
2.18
2.28
2.13
2.29
2.42
2.54
2.45
2.64
2.80
2.93
1.48
1.59
1.69
1.76
1.73
1.86
1.97
2.06
2.00
2.15
2.28
2.38
2.22
2.39
2.53
2.65
2.56
2.75
2.92
3.06
1.54
1.66
1.76
1.84
1.80
1.94
2.06
2.15
2.08
2.24
2.37
2.48
2.32
2.49
2.64
2.76
2.67
2.87
3.05
3.19
LVG.
WET
BULB
54.1
53.1
52.3
51.6
51.9
50.7
49.7
48.9
49.4
48.0
46.8
45.8
47.3
45.7
44.3
43.1
43.8
41.8
40.0
38.5
54.8
53.8
53.0
52.3
52.5
51.3
50.3
49.4
50.0
48.6
47.3
46.2
47.8
46.2
44.7
43.4
44.2
42.1
40.2
38.6
55.5
54.5
53.7
52.9
53.2
52.0
50.9
50.0
50.6
49.1
47.8
46.6
48.3
46.6
45.1
43.8
44.5
42.4
40.4
38.8
56.3
55.2
54.3
53.6
53.8
52.6
51.5
50.5
51.2
49.6
48.2
47.1
48.9
47.1
45.5
44.1
44.9
42.7
40.7
39.0
TONS
PER
SQ. FT.
1.41
1.52
1.61
1.69
1.66
1.79
1.90
1.99
1.93
2.08
2.20
2.31
2.16
2.32
2.46
2.58
2.51
2.70
2.86
3.00
1.48
1.59
1.69
1.77
1.74
1.87
1.98
2.08
2.02
2.17
2.30
2.41
2.26
2.43
2.57
2.69
2.63
2.82
2.99
3.13
1.54
1.66
1.76
1.84
1.82
1.95
2.07
2.17
2.11
2.27
2.41
2.52
2.36
2.53
2.69
2.81
2.74
2.95
3.13
3.27
1.61
1.73
1.84
1.92
1.90
2.04
2.16
2.26
2.20
2.37
2.51
2.63
2.46
2.64
2.80
2.93
2.86
3.08
3.26
3.41
LVG.
WET
BULB
54.4
53.5
52.7
52.1
52.3
51.2
50.2
49.4
49.9
48.5
47.3
46.3
47.8
46.2
44.8
43.6
44.3
42.3
40.6
39.1
55.1
54.2
53.4
52.7
52.9
51.8
50.8
49.9
50.5
49.1
47.8
46.8
48.3
46.7
45.2
44.0
44.7
42.6
40.8
39.3
55.9
54.9
54.1
53.4
53.6
52.4
51.4
50.5
51.1
49.6
48.3
47.3
48.8
47.1
45.6
44.4
45.1
42.9
41.1
39.5
56.6
55.6
54.8
54.1
54.3
53.1
52.0
51.1
51.7
50.2
48.8
47.7
49.3
47.6
46.0
44.7
45.5
43.3
41.3
39.7
TONS
PER
SQ. FT.
1.44
1.55
1.64
1.72
1.70
1.83
1.94
2.03
1.98
2.13
2.26
2.37
2.22
2.38
2.53
2.65
2.59
2.79
2.96
3.10
1.51
1.62
1.72
1.80
1.78
1.91
2.03
2.13
2.07
2.23
2.37
2.48
2.32
2.49
2.64
2.77
2.71
2.92
3.09
3.24
1.57
1.69
1.79
1.88
1.86
2.00
2.12
2.22
2.17
2.33
2.47
2.59
2.42
2.60
2.76
2.89
2.83
3.04
3.23
3.38
1.64
1.76
1.87
1.96
1.94
2.09
2.21
2.32
2.26
2.43
2.58
2.70
2.52
2.71
2.88
3.01
2.95
3.18
3.37
3.53
LVG.
WET
BULB
54.7
53.9
53.1
52.5
52.6
51.5
50.6
49.8
50.2
48.9
47.7
46.8
48.2
46.6
45.3
44.1
44.6
42.7
41.0
39.6
55.5
54.6
53.8
53.1
53.3
52.2
51.2
50.4
50.8
49.5
48.3
47.2
48.7
47.1
45.7
44.5
45.0
43.1
41.3
39.8
56.2
55.3
54.5
53.8
54.0
52.8
51.8
51.0
51.4
50.0
48.8
47.7
49.2
47.6
46.1
44.9
45.5
43.4
41.5
40.0
57.0
56.0
55.2
54.5
54.7
53.5
52.4
51.6
52.0
50.6
49.3
48.2
49.8
48.1
46.6
45.3
45.9
43.7
41.8
40.2
TONS
PER
SQ. FT.
1.47
1.58
1.67
1.75
1.74
1.87
1.99
2.08
2.03
2.18
2.32
2.43
2.28
2.45
2.60
2.72
2.67
2.87
3.04
3.19
1.53
1.65
1.75
1.83
1.82
1.96
2.08
2.17
2.12
2.28
2.42
2.54
2.38
2.56
2.71
2.84
2.79
3.00
3.18
3.33
1.60
1.72
1.83
1.91
1.90
2.05
2.17
2.27
2.22
2.39
2.53
2.65
2.49
2.67
2.83
2.97
2.91
3.13
3.32
3.48
1.67
1.80
1.91
1.99
1.98
2.13
2.26
2.30
2.31
2.49
2.64
2.76
2.59
2.70
2.96
3.10
3.04
3.27
3.47
3.63
LVG.
WET
BULB
55.0
54.2
53.5
52.8
52.9
51.9
50.9
50.2
50.6
49.3
48.2
47.2
48.5
47.0
45.7
44.6
45.0
43.2
41.5
40.1
55.8
54.9
54.2
53.5
53.6
52.5
51.6
50.8
51.2
49.9
48.7
47.7
49.1
47.5
46.1
45.0
45.4
43.5
41.8
40.3
56.5
55.7
54.9
54.2
54.3
53.2
52.2
51.4
51.8
50.4
49.2
48.2
49.6
48.0
46.6
45.4
45.9
43.8
42.0
40.5
57.3
56.4
55.6
54.9
55.0
53.8
52.8
52.0
52.4
51.0
49.8
48.7
50.2
48.5
47.0
45.8
46.3
44.2
42.3
40.8
- 21 -
TONS
PER
SQ. FT.
1.50
1.61
1.71
1.79
1.78
1.91
2.03
2.12
2.07
2.23
2.37
2.48
2.33
2.51
2.66
2.78
2.74
2.95
3.13
3.27
1.56
1.68
1.78
1.87
1.86
2.00
2.12
2.22
2.17
2.33
2.47
2.59
2.44
2.62
2.78
2.91
2.87
3.08
3.27
3.42
1.63
1.76
1.86
1.95
1.94
2.09
2.21
2.32
2.26
2.43
2.58
2.70
2.54
2.74
2.90
3.04
3.00
3.22
3.42
3.57
1.70
1.83
1.94
2.03
2.02
2.18
2.31
2.42
2.36
2.54
2.69
2.82
2.65
2.85
3.03
3.17
3.12
3.36
3.56
3.73
LVG.
WET
BULB
55.3
54.5
53.8
53.2
53.2
52.2
51.3
50.6
50.9
49.7
48.6
47.7
48.9
47.4
46.1
45.1
45.4
43.6
41.9
40.6
56.0
55.2
54.5
53.9
53.9
52.9
52.0
51.2
51.6
50.3
49.1
48.2
49.4
47.9
46.6
45.5
45.8
43.9
42.2
40.8
56.8
55.9
55.2
54.5
54.6
53.5
52.6
51.8
52.2
50.9
49.7
48.7
50.0
48.4
47.1
45.9
46.3
44.3
42.5
41.1
57.6
56.7
55.9
55.3
55.3
54.2
53.2
52.4
52.8
51.5
50.3
49.2
50.6
49.0
47.5
46.3
46.7
44.7
42.8
41.3
Page 22
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 35°35°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.49
1.60
1.69
1.77
1.72
1.85
1.96
2.05
1.97
2.12
2.25
2.35
2.17
2.33
2.47
2.59
2.48
2.66
2.82
2.96
1.55
1.66
1.77
1.85
1.79
1.93
2.04
2.14
2.05
2.21
2.34
2.45
2.26
2.43
2.58
2.70
2.58
2.77
2.94
3.08
1.61
1.73
1.84
1.92
1.86
2.00
2.12
2.22
2.14
2.30
2.44
2.55
2.35
2.53
2.68
2.81
2.69
2.89
3.06
3.21
WET
BULB
55.2
53.9
52.9
51.9
52.6
51.1
49.8
48.6
49.6
47.8
46.2
44.8
47.2
45.0
43.2
41.6
43.1
40.5
38.2
36.2
55.9
54.6
53.5
52.5
53.2
51.7
50.3
49.1
50.2
48.3
46.6
45.2
47.6
45.4
43.5
41.8
43.4
40.8
38.3
36.3
56.6
55.3
54.1
53.2
53.8
52.2
50.8
49.6
50.7
48.7
47.0
45.5
48.1
45.8
43.8
52.1
43.8
41.0
38.5
36.3
PER
SQ. FT.
1.53
1.65
1.75
1.83
1.77
1.91
2.02
2.12
2.03
2.19
2.32
2.43
2.25
2.42
2.57
2.69
2.58
2.77
2.94
3.08
1.59
1.71
1.82
1.90
1.85
1.99
2.11
2.21
2.12
2.28
2.41
2.53
2.35
2.52
2.68
2.80
2.69
2.89
3.06
3.21
1.66
1.78
1.89
1.98
1.92
2.07
2.19
2.30
2.20
2.37
2.51
2.63
2.44
2.63
2.79
2.92
2.80
3.01
3.19
3.34
WET
BULB
55.7
54.5
53.4
52.6
53.1
51.7
50.4
49.3
50.3
48.6
47.0
45.7
47.8
45.7
43.9
42.4
43.8
41.3
39.0
37.1
56.4
55.2
54.1
53.2
53.8
52.3
51.0
49.9
50.9
49.1
47.5
46.1
48.2
46.1
44.3
42.7
44.1
41.5
39.2
37.2
57.1
55.8
54.7
53.8
54.4
52.9
51.5
50.4
51.4
49.6
47.9
46.5
48.7
46.6
44.6
43.0
44.5
41.8
39.4
37.3
SQ. FT.
PER
1.57
1.69
1.79
1.88
1.83
1.96
2.08
2.18
2.11
2.26
2.40
2.51
2.34
2.51
2.66
2.79
2.68
2.89
3.06
3.20
1.64
1.76
1.87
1.96
1.90
2.05
2.17
2.27
2.19
2.36
2.50
2.62
2.43
2.62
2.78
2.91
2.80
3.01
3.19
3.34
1.71
1.83
1.95
2.04
1.98
2.13
2.26
2.36
2.28
2.46
2.60
2.73
2.53
2.72
2.89
3.02
2.91
3.13
3.32
3.47
LVG.
WET
BULB
56.1
55.0
54.0
53.1
53.7
52.3
51.0
50.0
50.8
49.1
47.6
46.3
48.3
46.3
44.6
43.1
44.4
41.9
39.7
37.9
56.8
55.7
54.6
53.8
54.3
52.9
51.6
50.6
51.4
49.6
48.1
46.8
48.8
46.8
45.0
43.4
44.7
42.2
39.9
38.0
57.5
56.4
55.3
54.4
55.0
53.5
52.2
51.1
51.9
50.1
48.5
47.2
49.3
47.2
45.3
43.7
45.1
42.5
40.1
38.1
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
56.6
55.5
54.5
53.7
54.1
52.8
51.6
50.6
51.3
49.7
48.2
47.0
48.9
47.0
45.2
43.8
44.9
42.5
40.4
38.6
57.3
56.2
55.2
54.4
54.8
53.4
52.2
51.2
51.9
50.2
48.7
47.5
49.4
47.4
45.6
44.1
45.3
42.8
40.6
38.7
58.0
56.9
55.9
55.1
55.5
54.0
52.8
51.7
52.5
50.8
49.2
47.9
49.9
47.9
46.0
44.5
45.6
43.1
40.8
38.8
TONS
PER
SQ. FT.
1.64
1.77
1.88
1.96
1.93
2.08
2.21
2.31
2.24
2.41
2.55
2.67
2.49
2.68
2.84
2.97
2.89
3.11
3.30
3.45
1.71
1.84
1.95
2.05
2.01
2.17
2.30
2.40
2.33
2.51
2.66
2.79
2.59
2.79
2.96
3.10
3.01
3.24
3.44
3.60
1.78
1.92
2.03
2.13
2.10
2.25
2.39
2.50
2.43
2.61
2.77
2.90
2.70
2.90
3.08
3.22
3.14
3.37
3.58
3.74
PER
SQ. FT.
1.61
1.73
1.83
1.92
1.88
2.02
2.14
2.24
2.17
2.33
2.47
2.59
2.41
2.60
2.75
2.88
2.79
3.00
3.18
3.33
1.68
1.80
1.91
2.00
1.96
2.11
2.23
2.34
2.26
2.43
2.58
2.70
2.52
2.70
2.87
3.00
2.90
3.12
3.31
3.46
1.74
1.88
1.99
2.08
2.04
2.19
2.32
2.43
2.35
2.53
2.68
2.81
2.62
2.82
2.99
3.12
3.02
3.25
3.45
3.61
LVG.
WET
BULB
57.0
55.9
55.0
54.3
54.5
53.2
52.1
51.1
51.8
50.2
48.7
47.6
49.4
47.5
45.9
44.5
45.3
43.0
40.9
39.1
57.7
56.7
55.7
54.9
55.2
53.9
52.7
51.7
52.3
50.7
49.3
48.0
49.9
48.0
46.3
44.8
45.7
43.3
41.1
39.3
58.5
57.4
56.4
55.6
55.9
54.5
53.3
52.3
52.9
51.3
49.8
48.5
50.4
48.5
46.7
45.2
46.1
43.6
41.4
39.4
TONS
PER
SQ. FT.
1.68
1.81
1.92
2.01
1.98
2.13
2.25
2.36
2.29
2.47
2.62
2.74
2.56
2.75
2.92
3.06
2.98
3.21
3.40
3.56
1.75
1.88
2.00
2.09
2.06
2.21
2.35
2.46
2.39
2.57
2.73
2.85
2.67
2.87
3.04
3.19
3.11
3.34
3.54
3.71
1.82
1.96
2.08
2.17
2.14
2.30
2.44
2.56
2.49
2.68
2.84
2.97
2.78
2.99
3.17
3.32
3.23
3.48
3.69
3.86
LVG.
WET
BULB
57.4
56.4
55.5
54.7
55.0
53.7
52.6
51.7
52.3
50.7
49.4
48.2
49.9
48.1
46.5
45.1
45.9
43.6
41.6
39.8
58.1
57.1
56.2
55.4
55.7
54.4
53.2
52.3
52.9
51.3
49.9
48.7
50.4
48.5
46.9
45.5
46.3
43.9
41.8
40.0
58.9
57.8
56.9
56.1
56.3
55.0
53.9
52.9
53.5
51.9
50.4
49.2
50.9
49.0
47.3
45.9
46.7
44.3
42.1
40.2
TONS
PER
SQ. FT.
1.71
1.84
1.95
2.04
2.02
2.18
2.31
2.41
2.36
2.53
2.69
2.81
2.63
2.83
3.00
3.14
3.08
3.31
3.51
3.68
1.78
1.92
2.03
2.13
2.11
2.27
2.40
2.52
2.45
2.64
2.80
2.93
2.74
2.95
3.13
3.27
3.21
3.45
3.66
3.83
1.85
1.99
2.12
2.21
2.19
2.36
2.50
2.62
2.55
2.75
2.91
3.05
2.85
3.07
3.25
3.41
3.34
3.59
3.81
3.99
LVG.
WET
BULB
57.7
56.8
55.9
55.2
55.3
54.1
53.1
52.2
52.7
51.2
49.8
48.7
50.3
48.6
47.0
45.7
46.3
44.1
42.1
40.4
58.5
57.5
56.6
55.9
56.0
54.8
53.7
52.8
53.3
51.7
50.4
49.2
50.9
49.1
47.5
46.1
46.7
44.4
42.4
40.6
59.2
58.2
57.3
56.6
56.7
55.5
54.3
53.4
53.9
52.3
50.9
49.7
51.4
49.6
47.9
46.5
47.1
44.8
42.6
40.8
TONS
PER
SQ. FT.
1.74
1.87
1.99
2.00
2.07
2.23
2.36
2.47
2.43
2.59
2.75
2.88
2.70
2.91
3.08
3.23
3.17
3.41
3.62
3.78
1.81
1.95
2.07
2.17
2.16
2.32
2.46
2.57
2.51
2.70
2.87
3.00
2.82
3.03
3.21
3.36
3.30
3.55
3.76
3.95
1.89
2.03
2.15
2.25
2.24
2.41
2.56
2.68
2.62
2.81
2.98
3.12
2.93
3.15
3.34
3.50
3.44
3.70
3.92
4.10
LVG.
WET
BULB
58.1
57.1
56.3
55.6
55.7
54.5
53.5
52.6
53.1
51.6
50.3
49.2
50.7
49.0
47.5
46.2
46.7
44.6
42.6
41.0
58.8
57.9
57.0
56.3
56.4
55.2
54.1
53.2
53.7
52.2
50.9
49.8
51.3
49.5
48.0
46.6
47.2
44.9
42.9
41.2
59.6
58.6
57.7
57.0
57.1
55.9
54.8
53.8
54.3
52.8
51.4
50.3
51.9
50.0
48.4
47.1
47.6
45.3
43.2
41.5
TONS
PER
SQ. FT.
1.78
1.91
2.03
2.12
2.11
2.27
2.41
2.52
2.46
2.65
2.81
2.94
2.77
2.98
3.16
3.30
3.26
3.50
3.71
3.89
1.85
1.99
2.11
2.21
2.20
2.36
2.51
2.62
2.57
2.76
2.93
3.06
2.88
3.10
3.29
3.44
3.39
3.65
3.87
4.05
1.93
2.07
2.20
2.30
2.29
2.46
2.61
2.73
2.67
2.87
3.04
3.19
3.00
3.23
3.42
3.58
3.53
3.80
4.03
4.22
LVG.
WET
BULB
58.3
57.4
56.6
56.0
56.0
54.9
53.9
53.0
53.5
52.1
50.8
49.8
51.1
49.5
48.0
46.8
47.2
45.0
43.2
41.6
59.1
58.2
57.4
56.7
56.7
55.6
54.5
53.7
54.1
52.7
51.4
50.3
51.7
50.0
48.5
47.2
47.6
45.4
43.5
41.8
59.9
58.9
58.1
57.4
57.5
56.3
55.2
54.3
54.8
53.3
52.0
50.8
52.3
50.5
49.0
47.7
48.1
45.8
43.8
42.1
- 22 -
Page 23
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 35°35°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.68
1.80
1.91
2.00
1.94
2.08
2.21
2.31
2.22
2.39
2.53
2.65
2.45
2.63
2.79
2.92
2.79
3.00
3.18
3.33
1.74
1.87
1.99
2.08
2.01
2.17
2.30
2.41
2.31
2.48
2.63
2.76
2.54
2.74
2.90
3.04
2.90
3.12
3.31
3.47
1.81
1.95
2.06
2.16
2.09
2.25
2.39
2.50
2.40
2.58
2.74
2.86
2.64
2.84
3.01
3.15
3.02
3.24
3.44
3.60
WET
BULB
57.3
55.9
54.8
53.8
54.5
52.8
51.4
50.2
51.2
49.2
47.4
45.9
48.5
46.2
44.1
42.3
44.1
41.2
38.6
36.4
58.0
56.6
55.4
54.4
55.1
53.4
51.9
50.7
51.8
49.7
47.9
46.3
49.0
46.6
44.4
42.6
44.4
41.4
38.7
36.4
58.7
57.3
56.0
55.0
55.7
54.0
52.5
51.2
52.3
50.2
48.3
46.7
49.5
47.0
44.8
42.9
44.8
41.7
38.9
36.5
PER SQ.
FT.
1.73
1.86
1.97
2.06
2.00
2.15
2.28
2.39
2.29
2.47
2.61
2.74
2.54
2.73
2.90
3.03
2.91
3.13
3.32
3.47
1.79
1.93
2.05
2.14
2.08
2.24
2.37
2.48
2.38
2.56
2.72
2.84
2.64
2.84
3.01
3.15
3.02
3.25
3.45
3.61
1.86
2.00
2.13
2.23
2.16
2.32
2.46
2.58
2.48
2.66
2.82
2.95
2.74
2.95
3.13
3.28
3.14
3.38
3.58
3.75
WET
BULB
57.8
56.5
55.4
54.4
55.1
53.5
52.1
50.9
52.0
50.1
48.4
46.9
49.2
47.0
45.0
43.2
44.8
42.0
39.5
37.4
58.5
57.2
56.1
55.1
55.7
54.1
52.7
51.5
52.6
50.6
48.8
47.4
49.7
47.4
45.3
43.6
45.2
42.3
39.7
37.5
59.2
57.9
56.7
55.7
56.4
54.7
53.3
52.0
53.1
51.1
49.3
47.8
50.2
47.8
45.7
43.9
45.5
42.6
39.9
37.6
PER
SQ. FT.
1.77
1.91
2.02
2.12
2.06
2.22
2.35
2.46
2.38
2.55
2.71
2.84
2.64
2.83
3.01
3.15
3.03
3.25
3.45
3.61
1.84
1.98
2.10
2.20
2.14
2.30
2.44
2.56
2.47
2.66
2.82
2.95
2.74
2.95
3.12
3.27
3.15
3.38
3.59
3.79
1.92
2.06
2.18
2.29
2.23
2.39
2.54
2.66
2.56
2.76
2.92
3.06
2.85
3.06
3.24
3.40
3.27
3.51
3.73
3.90
LVG.
WET
BULB
58.3
57.1
56.0
55.1
55.6
54.1
52.8
51.7
52.5
50.7
49.0
47.6
49.8
47.6
54.7
44.0
45.4
42.7
40.3
38.2
59.0
57.8
56.7
55.7
56.3
54.7
53.4
52.2
53.1
51.2
49.5
48.1
50.3
48.1
46.1
44.4
45.8
43.0
40.5
38.3
59.7
58.5
57.3
56.4
57.0
55.4
54.0
52.8
53.7
51.7
50.0
48.5
50.8
48.5
46.5
44.7
46.2
43.3
40.7
38.5
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
58.8
57.6
56.6
55.7
56.1
54.7
53.4
52.3
53.1
51.3
49.7
48.4
50.4
48.3
46.4
44.8
46.0
43.4
41.0
39.0
59.5
58.3
57.3
56.4
56.8
55.3
54.0
52.9
53.7
51.9
50.2
48.8
50.9
48.8
46.8
45.2
46.4
43.7
41.2
39.1
60.3
59.0
58.0
57.1
57.5
56.0
54.6
53.5
54.3
52.4
50.7
49.3
51.5
49.2
47.3
45.6
46.8
44.0
41.5
39.3
TONS
PER
SQ. FT.
1.86
2.00
2.12
2.21
2.18
2.35
2.49
2.60
2.53
2.72
2.88
3.02
2.81
3.02
3.20
3.35
3.26
3.51
3.72
3.89
1.93
2.07
2.20
2.30
2.27
2.44
2.59
2.71
2.63
2.82
2.99
3.13
2.92
3.14
3.33
3.48
3.39
3.65
3.87
4.05
2.00
2.15
2.28
2.39
2.35
2.53
2.69
2.81
2.73
2.93
3.11
3.26
3.03
3.26
3.46
3.62
3.52
3.79
4.02
4.21
PER
SQ. FT.
1.81
1.95
2.07
2.17
2.12
2.28
2.42
2.53
2.45
2.63
2.79
2.92
2.72
2.93
3.10
3.25
3.14
3.38
3.58
3.75
1.89
2.03
2.15
2.25
2.20
2.37
2.51
2.63
2.54
2.74
2.90
3.04
2.83
3.04
3.23
3.38
3.27
3.51
3.72
3.90
1.96
2.11
2.23
2.34
2.29
2.46
2.61
2.73
2.64
2.84
3.01
3.15
2.94
3.16
3.35
3.51
3.39
3.65
3.87
4.05
LVG.
WET
BULB
59.2
58.1
57.1
56.3
56.6
55.1
53.9
52.9
53.6
51.8
50.3
49.0
51.0
48.9
47.1
45.6
46.5
43.9
41.6
39.6
60.0
58.8
57.8
56.9
57.2
55.8
54.5
53.5
54.2
52.4
50.8
49.5
51.5
49.4
47.5
45.9
46.9
44.2
41.8
39.8
60.7
59.5
58.5
57.6
57.9
56.5
55.2
54.1
54.8
53.0
51.3
49.9
52.1
49.9
48.0
46.3
47.3
44.6
42.1
40.0
TONS
PER
SQ. FT.
1.89
2.04
2.16
2.26
2.23
2.40
2.54
2.66
2.59
2.78
2.95
3.09
2.89
3.11
3.29
3.45
3.36
3.62
3.84
4.01
1.97
2.12
2.25
2.35
2.32
2.49
2.64
2.77
2.69
2.89
3.07
3.21
3.00
3.23
3.42
3.58
3.50
3.76
3.99
4.17
2.05
2.20
2.33
2.44
2.41
2.59
2.74
2.87
2.79
3.00
3.19
3.33
3.12
3.35
3.56
3.72
3.63
3.91
4.14
4.33
LVG.
WET
BULB
59.6
58.5
57.6
56.8
57.0
55.7
54.5
53.5
54.1
52.4
51.0
49.7
51.5
49.5
47.8
46.3
47.1
44.6
42.4
40.4
60.4
59.3
58.3
57.5
57.7
56.4
55.1
54.1
54.7
53.0
51.5
50.2
52.1
50.0
48.2
46.7
47.5
44.9
42.6
40.6
61.1
60.0
59.0
58.2
58.4
57.0
55.8
54.7
55.4
53.6
52.0
50.7
52.6
50.5
48.7
47.1
48.0
45.3
42.9
40.8
TONS
PER
SQ. FT.
1.93
2.08
2.20
2.30
2.28
2.45
2.60
2.72
2.66
2.86
3.03
3.17
2.97
3.19
3.38
3.54
3.47
3.73
3.96
4.14
2.01
2.16
2.29
2.39
2.37
2.55
2.70
2.83
2.76
2.97
3.15
3.30
3.08
3.32
3.52
3.68
3.61
3.88
4.12
4.31
2.08
2.24
2.38
2.49
2.46
2.65
2.81
2.94
2.87
3.09
3.27
3.42
3.20
3.45
3.65
3.82
3.75
4.03
4.28
4.48
LVG.
WET
BULB
60.0
59.0
58.0
57.3
57.4
56.1
55.0
54.0
54.5
52.9
51.5
50.3
52.0
50.1
48.4
46.9
47.6
45.1
42.9
41.1
60.8
59.7
58.8
58.0
58.2
56.8
55.6
54.6
55.2
53.5
52.0
50.8
52.6
50.6
48.8
47.4
48.0
45.5
43.2
41.3
61.5
60.5
59.5
58.7
58.9
57.5
56.3
55.3
55.8
54.1
52.6
51.3
53.1
51.1
49.3
47.8
48.5
45.9
43.5
41.5
TONS
PER
SQ. FT.
1.96
2.11
2.24
2.35
2.33
2.51
2.66
2.79
2.72
2.93
3.10
3.25
3.05
3.28
3.48
3.64
3.58
3.84
4.08
4.27
2.04
2.20
2.33
2.44
2.43
2.61
2.77
2.90
2.83
3.04
3.22
3.38
3.17
3.41
3.61
3.78
3.72
4.01
4.24
4.44
2.12
2.28
2.43
2.53
2.52
2.71
2.87
3.01
2.94
3.16
3.35
3.51
3.29
3.54
3.75
3.93
3.86
4.15
4.40
4.61
LVG.
WET
BULB
60.4
59.4
58.5
57.7
57.8
56.5
55.4
54.5
55.0
53.4
52.0
50.8
52.4
50.6
48.9
47.5
48.1
45.7
43.5
41.7
61.1
60.1
59.2
58.4
58.5
57.2
56.1
55.1
55.6
54.0
52.6
51.4
53.0
51.1
49.4
47.9
48.5
46.0
43.8
42.0
61.9
60.9
59.9
59.2
59.3
57.9
56.7
55.8
56.3
54.6
53.1
51.9
53.6
51.6
49.9
48.4
49.0
46.4
44.2
42.2
SQ. FT.
TONS
PER
2.00
2.15
2.29
2.39
2.38
2.56
2.71
2.84
2.78
2.99
3.17
3.32
3.12
3.36
3.56
3.73
3.67
3.95
4.19
4.38
2.08
2.24
2.38
2.49
2.47
2.66
2.82
2.95
2.89
3.10
3.29
3.45
3.24
3.49
3.70
3.87
3.82
4.11
4.35
4.56
2.16
2.33
2.47
2.58
2.57
2.76
2.93
3.07
3.00
3.23
3.42
3.58
3.37
3.62
3.84
4.02
3.97
4.27
4.52
4.73
LVG.
WET
BULB
60.7
59.7
58.8
58.1
58.2
57.0
55.9
55.0
55.4
53.9
52.5
51.4
52.9
51.1
49.5
48.1
48.5
46.2
44.1
42.3
61.4
60.4
59.6
58.8
58.9
57.7
56.5
55.6
56.1
54.5
53.1
52.0
53.5
51.6
50.0
48.6
49.0
46.6
44.4
42.6
62.2
61.2
60.3
59.6
59.6
58.4
57.2
56.3
56.7
55.1
53.7
52.5
54.1
52.2
50.5
49.0
49.5
47.0
44.8
42.9
- 23 -
Page 24
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 40°40°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.06
1.14
1.21
1.26
1.22
1.32
1.39
1.46
1.40
1.51
1.60
1.67
1.54
1.66
1.76
1.84
1.76
1.90
2.01
2.11
1.11
1.20
1.27
1.33
1.29
1.38
1.47
1.54
1.48
1.59
1.68
1.76
1.63
1.75
1.85
1.94
1.86
2.00
2.11
2.21
1.17
1.26
1.33
1.40
1.35
1.45
1.54
1.61
1.55
1.67
1.77
1.85
1.71
1.84
1.95
2.04
1.95
2.10
2.22
2.33
1.23
1.32
1.40
1.46
1.42
1.53
1.62
1.69
1.63
1.75
1.86
1.94
1.79
1.93
2.04
2.14
2.05
2.20
2.33
2.44
WET
BULB
54.6
53.7
53.0
52.3
52.8
51.7
50.8
50.0
50.7
49.4
48.3
47.4
49.0
47.5
46.3
45.2
46.2
44.5
43.0
41.6
55.3
54.4
53.6
52.9
53.4
52.3
51.3
50.5
51.2
49.9
48.7
47.7
49.4
47.9
46.6
45.4
46.5
44.7
43.1
41.7
55.9
55.0
54.2
53.5
54.0
52.8
51.8
51.0
51.7
50.3
49.1
48.1
49.8
48.3
46.9
45.7
46.9
44.9
43.3
41.8
56.6
55.6
54.8
54.0
54.6
53.4
52.3
51.4
52.2
50.8
49.5
48.4
50.3
48.6
47.2
46.0
47.2
45.2
43.4
41.9
PER
SQ. FT.
1.09
1.17
1.24
1.30
1.26
1.36
1.44
1.51
1.45
1.56
1.65
1.73
1.60
1.73
1.83
1.92
1.84
1.97
2.09
2.19
1.15
1.23
1.31
1.37
1.33
1.43
1.52
1.59
1.52
1.64
1.74
1.82
1.69
1.82
1.92
2.02
1.93
2.08
2.20
2.31
1.20
1.30
1.37
1.44
1.40
1.50
1.59
1.67
1.60
1.72
1.82
1.91
1.77
1.91
2.02
2.12
2.03
2.18
2.31
2.42
1.26
1.36
1.44
1.51
1.47
1.58
1.67
1.75
1.68
1.81
1.91
2.00
1.86
2.00
2.12
2.22
2.13
2.29
2.43
2.54
WET
BULB
55.0
54.1
53.4
52.8
53.2
52.1
51.2
50.5
51.2
50.0
48.9
48.0
49.4
48.0
46.8
45.7
46.7
45.0
43.5
42.2
55.6
54.8
54.0
53.4
53.8
52.7
51.8
51.0
51.7
50.4
49.3
48.4
49.9
48.4
47.1
46.0
47.0
45.2
43.7
42.3
56.3
55.4
54.6
53.9
54.4
53.3
52.3
51.5
52.2
50.9
49.7
48.8
50.3
48.8
47.4
46.3
47.3
45.5
43.9
42.5
57.0
56.1
55.2
54.5
55.0
53.8
52.8
52.0
52.8
51.4
50.2
49.1
50.8
49.2
47.8
46.6
47.7
45.8
44.0
42.6
PER
SQ. FT.
1.12
1.20
1.28
1.34
1.30
1.40
1.48
1.55
1.50
1.61
1.71
1.79
1.66
1.79
1.90
1.99
1.91
2.06
2.18
2.28
1.18
1.27
1.34
1.41
1.37
1.47
1.56
1.63
1.58
1.70
1.80
1.88
1.75
1.88
2.00
2.09
2.01
2.16
2.29
2.40
1.24
1.33
1.41
1.48
1.44
1.55
1.64
1.72
1.66
1.78
1.89
1.98
1.84
1.98
2.10
2.20
2.11
2.27
2.41
2.52
1.30
1.40
1.48
1.55
1.51
1.62
1.72
1.80
1.74
1.87
1.98
2.08
1.93
2.08
2.20
2.30
2.22
2.38
2.53
2.65
LVG.
WET
BULB
55.3
54.5
53.8
53.2
53.5
52.6
51.7
51.0
51.5
50.3
49.3
48.4
49.8
48.4
47.2
46.2
47.1
45.4
44.0
42.7
56.0
55.1
54.4
53.8
54.2
53.1
52.2
51.5
52.1
50.8
49.7
48.8
50.2
48.8
47.6
46.5
47.4
45.7
44.2
42.9
56.7
55.8
55.0
54.4
54.8
53.7
52.8
52.0
52.6
51.3
50.2
49.2
50.7
49.2
47.9
46.8
47.8
46.0
44.4
43.0
57.4
56.5
55.7
55.0
55.4
54.3
53.3
52.5
53.1
51.8
50.6
49.6
51.2
49.7
48.3
47.1
48.1
46.2
44.6
43.1
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
55.6
54.9
54.2
53.6
53.9
52.9
52.1
51.4
51.9
50.7
49.7
48.9
50.2
48.8
47.7
46.7
47.4
45.8
44.4
43.2
56.3
55.5
54.8
54.2
54.5
53.5
52.6
51.9
52.4
51.2
50.2
49.3
50.6
49.3
48.1
47.0
47.8
46.1
44.6
43.3
57.0
56.2
55.5
54.8
55.1
54.1
53.2
52.4
53.0
51.8
50.7
49.7
51.1
49.7
48.4
47.4
48.1
46.4
44.8
43.5
57.7
56.9
56.1
55.5
55.8
54.7
53.8
53.0
53.6
52.3
51.1
50.2
51.6
50.1
48.8
47.7
48.5
46.7
45.1
43.7
TONS
PER
SQ. FT.
1.17
1.26
1.33
1.40
1.38
1.48
1.57
1.64
1.59
1.71
1.82
1.90
1.77
1.91
2.02
2.12
2.06
2.22
2.35
2.46
1.23
1.32
1.40
1.47
1.45
1.56
1.65
1.73
1.68
1.80
1.91
2.00
1.87
2.01
2.13
2.23
2.17
2.33
2.47
2.59
1.29
1.39
1.48
1.55
1.52
1.64
1.73
1.82
1.76
1.90
2.01
2.10
1.96
2.11
2.23
2.34
2.28
2.45
2.60
2.72
1.36
1.46
1.55
1.62
1.60
1.72
1.82
1.91
1.85
1.99
2.11
2.21
2.06
2.21
2.34
2.46
2.39
2.57
2.72
2.85
PER
SQ. FT.
1.14
1.23
1.30
1.37
1.34
1.44
1.53
1.60
1.54
1.66
1.76
1.84
1.72
1.85
1.96
2.05
1.98
2.13
2.26
2.37
1.20
1.30
1.37
1.44
1.41
1.51
1.60
1.68
1.63
1.75
1.85
1.94
1.81
1.95
2.06
2.16
2.09
2.25
2.38
2.49
1.27
1.36
1.44
1.51
1.48
1.59
1.69
1.77
1.71
1.84
1.95
2.04
1.90
2.04
2.17
2.27
2.19
2.36
2.50
2.62
1.33
1.43
1.51
1.59
1.55
1.67
1.77
1.85
1.79
1.93
2.04
2.14
1.99
2.14
2.27
2.38
2.30
2.48
2.62
2.75
LVG.
WET
BULB
55.9
55.2
54.5
54.0
54.2
53.2
52.4
51.7
52.2
51.1
50.1
49.3
50.5
49.2
48.1
47.1
47.7
46.1
44.7
43.6
56.6
55.9
55.2
54.6
54.8
53.8
53.0
52.3
52.7
51.6
50.6
49.7
51.0
49.7
48.5
47.5
48.1
46.4
45.0
43.7
57.4
56.5
55.8
55.2
55.4
54.4
53.6
52.8
53.3
52.1
51.0
50.1
51.5
50.1
48.9
47.8
48.5
46.7
45.2
43.9
58.1
57.2
56.5
55.9
56.1
55.1
54.1
53.4
53.9
52.6
51.5
50.6
52.0
50.6
49.3
48.2
48.8
47.0
45.5
44.1
TONS
PER
SQ. FT.
1.20
1.29
1.36
1.43
1.41
1.51
1.60
1.68
1.63
1.76
1.86
1.95
1.82
1.96
2.08
2.18
2.12
2.28
2.42
2.54
1.26
1.35
1.43
1.50
1.48
1.59
1.69
1.77
1.72
1.85
1.96
2.05
1.92
2.06
2.19
2.29
2.23
2.40
2.55
2.67
1.32
1.42
1.51
1.58
1.56
1.67
1.77
1.86
1.81
1.94
2.06
2.16
2.02
2.17
2.30
2.41
2.35
2.52
2.68
2.80
1.39
1.49
1.58
1.66
1.63
1.76
1.86
1.95
1.89
2.04
2.16
2.26
2.12
2.28
2.41
2.53
2.46
2.65
2.81
2.94
LVG.
WET
BULB
56.2
55.5
54.8
54.3
54.5
53.6
52.8
52.1
52.5
51.5
50.5
49.7
50.9
49.6
48.5
47.6
48.1
46.5
45.2
44.0
56.9
56.2
55.5
54.9
55.1
54.2
53.4
52.7
53.1
52.0
51.0
50.2
51.4
50.1
48.9
47.9
48.5
46.9
45.4
44.2
57.6
56.9
56.2
55.6
55.8
54.8
54.0
53.3
53.7
52.5
51.5
50.6
51.9
50.5
49.3
48.3
48.9
47.2
45.7
44.4
58.4
57.6
56.9
56.3
56.4
55.5
54.6
53.8
54.3
53.1
52.0
51.1
52.4
51.0
49.7
48.7
49.3
47.5
46.0
44.7
TONS
PER
SQ. FT.
1.22
1.31
1.39
1.45
1.44
1.55
1.64
1.72
1.68
1.80
1.91
2.00
1.87
2.01
2.14
2.24
2.19
2.36
2.50
2.62
1.28
1.38
1.46
1.53
1.52
1.63
1.73
1.81
1.77
1.90
2.01
2.11
1.97
2.12
2.25
2.35
2.31
2.48
2.63
2.75
1.35
1.45
1.53
1.61
1.59
1.71
1.81
1.90
1.85
1.99
2.11
2.21
2.07
2.23
2.36
2.47
2.42
2.61
2.76
2.89
1.41
1.52
1.61
1.69
1.67
1.80
1.90
1.99
1.95
2.09
2.22
2.32
2.17
2.34
2.48
2.59
2.54
2.74
2.90
3.04
LVG.
WET
BULB
56.5
55.8
55.2
54.6
54.7
53.9
53.1
52.5
52.8
51.8
50.8
50.1
51.2
50.0
48.9
48.0
48.4
46.9
45.5
44.4
57.2
56.5
55.8
55.3
55.4
54.5
53.7
53.1
53.4
52.3
51.4
50.5
51.7
50.4
49.3
48.4
48.8
47.2
45.8
44.6
57.9
57.2
56.5
56.0
56.1
55.1
54.3
53.6
54.0
52.9
51.9
51.0
52.2
50.9
49.7
48.8
49.2
47.5
46.1
44.9
58.7
57.9
57.2
56.6
56.8
55.8
54.9
54.2
54.6
53.4
52.4
51.5
52.8
51.4
50.2
49.2
49.6
47.9
46.4
45.1
TONS
PER
SQ. FT.
1.24
1.33
1.41
1.48
1.47
1.58
1.69
1.76
1.72
1.85
1.96
2.05
1.92
2.08
2.19
2.30
2.27
2.43
2.57
2.70
1.31
1.40
1.49
1.56
1.55
1.67
1.77
1.85
1.81
1.94
2.06
2.16
2.03
2.18
2.31
2.42
2.38
2.55
2.71
2.84
1.37
1.47
1.56
1.65
1.63
1.75
1.86
1.94
1.90
2.04
2.16
2.27
2.12
2.29
2.43
2.54
2.51
2.68
2.84
2.98
1.44
1.55
1.64
1.72
1.71
1.84
1.95
2.04
1.99
2.14
2.27
2.38
2.23
2.40
2.55
2.66
2.61
2.83
2.99
3.13
LVG.
WET
BULB
56.7
56.0
55.4
54.9
55.0
54.1
53.4
52.8
53.1
52.1
51.2
50.4
51.5
50.3
49.2
48.3
48.7
47.2
45.9
44.8
57.5
56.7
56.1
55.6
55.7
54.8
54.0
53.4
53.7
52.6
51.7
50.9
52.0
50.7
49.7
48.7
49.1
47.6
46.2
45.0
58.2
57.5
56.8
56.3
56.3
55.4
54.6
54.0
54.3
53.2
52.2
51.4
52.5
51.2
50.1
49.1
49.5
47.9
46.5
45.3
58.9
58.2
57.5
57.0
57.0
56.1
55.3
54.6
54.9
53.8
52.8
51.9
53.1
51.7
50.6
49.6
49.9
48.3
46.8
45.5
TONS
SQ. FT.
PER
1.26
1.36
1.44
1.51
1.50
1.62
1.71
1.79
1.75
1.89
2.00
2.09
1.97
2.12
2.25
2.35
2.32
2.49
2.64
2.77
1.33
1.43
1.52
1.59
1.58
1.70
1.80
1.89
1.85
1.98
2.10
2.20
2.07
2.23
2.36
2.47
2.44
2.62
2.78
2.91
1.40
1.50
1.59
1.67
1.66
1.79
1.89
1.98
1.94
2.08
2.21
2.31
2.18
2.34
2.48
2.60
2.56
2.76
2.92
3.06
1.47
1.58
1.67
1.75
1.74
1.87
1.99
2.08
2.03
2.19
2.32
2.43
2.29
2.46
2.61
2.73
2.69
2.89
3.07
3.21
LVG.
WET
BULB
56.9
56.3
55.7
55.2
55.2
54.4
53.7
53.1
53.4
52.4
51.5
50.8
51.8
50.6
49.6
48.7
49.0
47.5
46.3
45.2
57.7
57.0
56.4
55.9
55.9
55.1
54.3
53.7
54.0
53.0
52.1
51.3
52.3
51.1
50.0
49.1
49.4
47.9
46.6
45.4
58.4
57.7
57.1
56.6
56.6
55.7
55.0
54.3
54.6
53.6
52.6
51.8
52.9
51.6
50.5
49.6
49.8
48.3
46.9
45.7
59.2
58.4
57.8
57.2
57.3
56.4
55.6
54.9
55.3
54.1
53.2
52.3
53.4
52.1
51.0
50.0
50.3
48.6
47.2
46.0
- 24 -
Page 25
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 40°40°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.29
1.38
1.47
1.54
1.49
1.60
1.70
1.78
1.71
1.83
1.94
2.04
1.88
2.02
2.14
2.24
2.14
2.31
2.44
2.56
1.35
1.45
1.53
1.61
1.56
1.67
1.78
1.86
1.79
1.92
2.04
2.13
1.97
2.11
2.24
2.35
2.24
2.41
2.56
2.68
1.41
1.51
1.61
1.68
1.63
1.75
1.86
1.94
1.87
2.01
2.13
2.23
2.06
2.21
2.34
2.45
2.35
2.52
2.67
2.80
WET
BULB
57.3
56.3
55.4
54.6
55.2
53.9
52.8
51.9
52.7
51.2
49.9
48.8
50.7
49.0
47.5
46.2
47.5
45.4
43.6
42.0
58.0
56.9
56.0
55.2
55.8
54.5
53.4
52.4
53.3
51.7
50.4
49.2
51.2
49.4
47.8
46.5
47.8
45.7
43.7
42.1
58.6
57.6
56.6
55.8
56.4
55.1
53.9
52.9
53.8
52.2
50.8
49.6
51.6
49.8
48.2
46.8
48.1
45.9
43.9
42.2
PER
SQ. FT.
1.32
1.42
1.51
1.58
1.54
1.65
1.75
1.83
1.76
1.89
2.01
2.10
1.95
2.10
2.22
2.33
2.23
2.40
2.54
2.67
1.39
1.49
1.58
1.66
1.61
1.73
1.83
1.92
1.84
1.98
2.10
2.20
2.04
2.20
2.33
2.44
2.34
2.51
2.66
2.79
1.45
1.56
1.65
1.73
1.68
1.81
1.92
2.01
1.93
2.07
2.20
2.30
2.14
2.30
2.43
2.55
2.44
2.63
2.79
2.92
WET
BULB
57.7
56.7
55.9
55.1
55.6
54.4
53.4
52.5
53.3
51.9
50.6
49.6
51.2
49.6
48.1
46.9
48.0
46.0
44.2
42.7
58.4
57.4
56.5
55.8
56.2
55.0
53.9
53.0
53.8
52.4
51.1
50.0
51.7
50.0
48.5
47.2
48.4
46.3
44.4
42.8
59.1
58.0
57.1
56.4
56.9
55.6
54.5
53.5
54.4
52.9
51.5
50.4
52.2
50.4
48.8
47.5
48.7
46.5
44.6
42.9
PER
SQ. FT.
1.36
1.46
1.55
1.63
1.58
1.70
1.80
1.89
1.82
1.96
2.08
2.18
2.02
2.18
2.31
2.41
2.32
2.50
2.65
2.77
1.43
1.53
1.62
1.70
1.66
1.78
1.89
1.98
1.91
2.05
2.18
2.28
2.12
2.28
2.41
2.53
2.43
2.62
2.77
2.90
1.49
1.60
1.70
1.78
1.73
1.86
1.97
2.07
2.00
2.15
2.28
2.38
2.21
2.38
2.52
2.64
2.54
2.73
2.90
3.04
LVG.
WET
BULB
58.1
57.1
56.3
55.6
56.0
54.9
53.9
53.0
53.7
52.3
51.1
50.1
51.7
50.1
48.7
47.5
48.5
46.5
44.8
43.3
58.8
57.8
57.0
56.2
56.7
55.5
54.5
53.6
54.3
52.8
51.6
50.5
52.2
50.5
49.0
47.8
48.8
46.8
45.0
43.4
59.5
58.5
57.6
56.9
57.3
56.1
55.0
54.1
54.8
53.3
52.0
50.9
52.7
50.9
49.4
48.1
49.2
47.1
45.2
43.6
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
58.5
57.6
56.8
56.1
56.4
55.3
54.4
53.5
54.1
52.8
51.6
50.6
52.1
50.6
49.2
48.0
48.9
47.0
45.3
43.8
59.2
58.2
57.4
56.7
57.1
55.9
54.9
54.1
54.7
53.3
52.1
51.1
52.6
51.0
49.6
48.4
49.3
47.3
45.5
44.0
59.9
58.9
58.1
57.4
57.7
56.5
55.5
54.6
55.3
53.9
52.6
51.5
53.1
51.5
50.0
48.7
49.7
47.6
45.8
44.2
TONS
PER
SQ. FT.
1.42
1.53
1.62
1.70
1.67
1.80
1.91
2.00
1.94
2.08
2.21
2.31
2.16
2.32
2.46
2.57
2.50
2.69
2.85
2.99
1.49
1.60
1.70
1.78
1.75
1.88
2.00
2.09
2.03
2.18
2.31
2.42
2.26
2.43
2.57
2.69
2.62
2.82
2.99
3.13
1.56
1.68
1.78
1.86
1.83
1.97
2.09
2.19
2.12
2.28
2.42
2.53
2.36
2.54
2.69
2.82
2.74
2.95
3.13
3.27
PER
SQ. FT.
1.39
1.50
1.59
1.66
1.63
1.75
1.85
1.94
1.88
2.02
2.14
2.24
2.09
2.25
2.38
2.49
2.41
2.59
2.75
2.88
1.46
1.57
1.66
1.74
1.70
1.83
1.94
2.03
1.97
2.11
2.24
2.35
2.19
2.35
2.49
2.61
2.53
2.72
2.88
3.01
1.52
1.64
1.74
1.82
1.78
1.91
2.03
2.13
2.06
2.21
2.34
2.45
2.29
2.46
2.61
2.73
2.64
2.84
3.01
3.15
LVG.
WET
BULB
58.8
57.9
57.2
56.5
56.7
55.7
54.7
53.9
54.5
53.2
52.0
51.1
52.5
51.0
49.7
48.6
49.2
47.4
45.7
44.3
59.5
58.6
57.8
57.2
57.4
56.3
55.3
54.5
55.1
53.7
52.5
51.5
53.0
51.5
50.1
48.9
49.6
47.7
46.0
44.5
60.2
59.3
58.5
57.8
58.1
56.9
55.9
55.1
55.6
54.3
53.0
52.0
53.6
52.0
50.5
49.3
50.0
48.0
46.2
44.7
TONS
PER
SQ. FT.
1.45
1.56
1.66
1.74
1.71
1.84
1.95
2.04
1.99
2.14
2.26
2.37
2.22
2.38
2.53
2.65
2.58
2.78
2.94
3.08
1.52
1.64
1.74
1.82
1.79
1.93
2.04
2.14
2.08
2.24
2.37
2.48
2.32
2.50
2.65
2.77
2.70
2.91
3.08
3.23
1.59
1.71
1.81
1.90
1.87
2.01
2.13
2.24
2.17
2.34
2.48
2.60
2.43
2.61
2.77
2.90
2.83
3.04
3.22
3.37
LVG.
WET
BULB
59.1
58.3
57.5
56.9
57.1
56.1
55.2
54.4
54.9
53.6
52.5
51.6
52.9
51.5
50.2
49.1
49.7
47.9
46.2
44.9
59.8
59.0
58.2
57.6
57.8
56.7
55.8
55.0
55.5
54.2
53.0
52.1
53.5
51.9
50.6
49.5
50.1
48.2
46.5
45.1
60.6
59.7
58.9
58.3
58.5
57.4
56.4
55.6
56.1
54.7
53.6
52.6
54.0
52.4
51.0
49.9
50.5
48.5
46.8
45.3
TONS
PER
SQ. FT.
1.48
1.59
1.69
1.77
1.75
1.88
2.00
2.09
2.04
2.19
2.32
2.43
2.28
2.45
2.60
2.72
2.67
2.87
3.04
3.18
1.55
1.67
1.77
1.85
1.83
1.97
2.09
2.19
2.14
2.30
2.43
2.55
2.38
2.56
2.72
2.85
2.79
3.00
3.18
3.33
1.62
1.74
1.85
1.94
1.92
2.06
2.18
2.29
2.23
2.40
2.55
2.67
2.49
2.68
2.84
2.98
2.92
3.14
3.33
3.48
LVG.
WET
BULB
59.4
58.6
57.9
57.3
57.4
56.4
55.6
54.8
55.2
54.0
52.9
52.0
53.3
51.9
50.6
49.6
50.0
48.2
46.7
45.3
60.2
59.3
58.6
58.0
58.1
57.1
56.2
55.4
55.8
54.6
53.4
52.5
53.8
52.4
51.1
50.0
50.4
48.6
47.0
45.6
60.9
60.0
59.3
58.7
58.8
57.7
56.8
56.0
56.4
55.1
54.0
53.0
54.4
52.9
51.5
50.4
50.9
49.0
47.3
45.8
TONS
PER
SQ. FT.
1.51
1.62
1.72
1.80
1.79
1.93
2.04
2.14
2.09
2.24
2.38
2.49
2.34
2.52
2.67
2.79
2.76
2.95
3.13
3.28
1.58
1.70
1.80
1.89
1.87
2.02
2.15
2.25
2.19
2.35
2.49
2.61
2.46
2.64
2.79
2.93
2.88
3.09
3.28
3.43
1.65
1.77
1.89
1.97
1.96
2.11
2.25
2.34
2.29
2.48
2.62
2.74
2.56
2.75
2.92
3.06
3.01
3.23
3.43
3.59
LVG.
WET
BULB
59.7
58.9
58.2
57.6
57.7
56.7
55.9
55.2
55.5
54.4
53.3
52.4
53.6
52.2
51.0
50.0
50.4
48.6
47.1
45.8
60.4
59.6
58.9
58.3
58.4
57.4
56.5
55.8
56.2
54.9
53.9
52.9
54.2
52.7
51.5
50.4
50.8
49.0
47.4
46.0
61.2
60.4
59.6
59.0
59.1
58.1
57.2
56.4
56.8
55.5
54.4
53.5
54.7
53.3
51.9
50.8
51.3
49.4
47.7
46.3
SQ. FT.
TONS
PER
1.54
1.65
1.75
1.84
1.83
1.96
2.08
2.18
2.13
2.29
2.43
2.54
2.40
2.58
2.73
2.86
2.82
3.03
3.21
3.37
1.61
1.73
1.84
1.92
1.91
2.06
2.18
2.28
2.23
2.40
2.54
2.66
2.51
2.70
2.86
2.99
2.95
3.17
3.36
3.52
1.68
1.81
1.92
2.01
2.00
2.15
2.28
2.39
2.33
2.51
2.66
2.79
2.62
2.82
2.99
3.13
3.09
3.32
3.52
3.68
LVG.
WET
BULB
59.9
59.2
58.5
57.9
58.0
57.1
56.2
55.5
55.9
54.7
53.7
52.9
54.0
52.6
51.4
50.4
50.7
49.0
47.5
46.2
60.7
59.9
59.2
58.6
58.7
57.7
56.9
56.2
56.5
55.3
54.3
53.4
54.5
53.1
51.9
50.9
51.2
49.4
47.8
46.5
61.4
60.6
59.9
59.3
59.4
58.4
57.5
56.8
57.2
55.9
54.8
53.9
55.1
53.7
52.4
51.3
51.6
49.8
48.2
46.8
- 25 -
Page 26
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 40°40°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.47
1.58
1.68
1.76
1.70
1.83
1.94
2.03
1.95
2.10
2.22
2.33
2.15
2.31
2.45
2.56
2.45
2.64
2.79
2.93
1.54
1.65
1.75
1.83
1.78
1.91
2.02
2.12
2.04
2.19
2.32
2.43
2.24
2.41
2.56
2.68
2.56
2.75
2.92
3.05
1.60
1.72
1.83
1.91
1.85
1.99
2.11
2.21
2.12
2.28
2.42
2.53
2.34
2.51
2.67
2.79
2.67
2.87
3.04
3.18
WET
BULB
59.3
58.2
57.2
56.4
57.0
55.6
54.4
53.4
54.3
52.7
51.2
50.0
52.1
50.2
48.5
47.1
48.5
46.1
44.1
42.3
60.0
58.9
57.9
57.0
57.6
56.2
55.0
53.9
54.9
53.2
51.7
50.4
52.6
50.6
48.9
47.4
48.8
46.4
44.2
42.4
60.7
59.5
58.5
57.6
58.3
56.8
55.5
54.5
55.4
53.7
52.1
50.8
53.0
51.0
49.2
47.6
49.2
46.7
44.4
42.5
PER
SQ. FT.
1.51
1.63
1.73
1.81
1.76
1.89
2.00
2.10
2.01
2.16
2.29
2.40
2.23
2.40
2.54
2.66
2.55
2.75
2.91
3.05
1.58
1.70
1.80
1.89
1.83
1.97
2.09
2.19
2.10
2.26
2.39
2.51
2.33
2.50
2.65
2.78
2.66
2.87
3.04
3.18
1.65
1.77
1.88
1.97
1.91
2.06
2.18
2.28
2.19
2.35
2.50
2.61
2.43
2.61
2.77
2.90
2.78
2.99
3.17
3.32
WET
BULB
59.8
58.7
57.8
57.0
57.5
56.2
55.0
54.1
55.0
53.4
52.0
50.8
52.7
50.8
49.2
47.8
49.1
46.8
44.8
43.1
60.5
59.4
58.4
57.6
58.1
56.8
55.6
54.6
55.5
53.9
52.4
51.2
53.1
51.3
49.6
48.1
49.4
47.1
45.0
43.2
61.2
60.1
59.1
58.2
58.8
57.4
56.2
55.1
56.1
54.4
52.9
51.6
53.6
51.7
49.9
48.4
49.8
47.4
45.2
43.3
PER
SQ. FT.
1.56
1.67
1.78
1.86
1.81
1.94
2.06
2.16
2.08
2.24
2.38
2.49
2.31
2.49
2.64
2.76
2.66
2.86
3.03
3.17
1.63
1.75
1.85
1.94
1.89
2.03
2.15
2.25
2.18
2.34
2.48
2.60
2.41
2.60
2.75
2.88
2.77
2.98
3.16
3.31
1.69
1.82
1.93
2.02
1.97
2.12
2.24
2.35
2.27
2.44
2.59
2.71
2.52
2.71
2.87
3.01
2.89
3.11
3.30
3.45
LVG.
WET
BULB
60.2
59.2
58.3
57.5
58.0
56.7
55.6
54.7
55.4
53.9
52.5
51.4
53.2
51.4
49.8
48.4
49.6
47.4
45.4
43.7
60.9
59.8
58.9
58.1
58.6
57.3
56.2
55.2
56.0
54.4
53.0
51.8
53.7
51.8
50.2
48.8
50.0
47.7
45.7
43.9
61.6
60.5
59.6
58.8
59.3
58.0
56.8
55.8
56.5
54.9
53.5
52.3
54.2
52.3
50.6
49.1
50.4
48.0
45.9
44.1
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
60.6
59.6
58.8
58.0
58.4
57.2
56.1
55.2
55.9
54.4
53.1
52.0
53.6
51.9
50.4
49.1
50.1
47.9
46.0
44.4
61.3
60.3
59.4
58.7
59.0
57.8
56.7
55.8
56.5
54.9
53.6
52.4
54.2
52.4
50.8
49.5
50.5
48.2
46.3
44.5
62.1
61.0
60.1
59.4
59.7
58.4
57.3
56.4
57.1
55.5
54.1
52.9
54.7
52.9
51.2
49.8
50.9
48.6
46.5
44.7
TONS
PER
SQ. FT.
1.63
1.75
1.86
1.94
1.91
2.06
2.18
2.29
2.22
2.38
2.53
2.65
2.46
2.65
2.81
2.94
2.86
3.08
3.26
3.42
1.70
1.83
1.94
2.03
2.00
2.15
2.28
2.39
2.31
2.49
2.64
2.76
2.57
2.77
2.93
3.07
2.99
3.21
3.41
3.57
1.77
1.91
2.02
2.12
2.08
2.24
2.37
2.49
2.41
2.60
2.75
2.88
2.68
2.88
3.06
3.20
3.12
3.35
3.55
3.72
PER
SQ. FT.
1.59
1.71
1.81
1.90
1.86
2.00
2.12
2.22
2.15
2.31
2.45
2.56
2.39
2.57
2.72
2.85
2.76
2.97
3.14
3.29
1.66
1.79
1.89
1.98
1.94
2.09
2.21
2.32
2.24
2.41
2.56
2.68
2.49
2.68
2.84
2.98
2.88
3.10
3.28
3.44
1.73
1.86
1.98
2.07
2.02
2.18
2.31
2.42
2.34
2.51
2.67
2.79
2.60
2.80
2.97
3.11
3.00
3.23
3.42
3.58
LVG.
WET
BULB
61.0
60.0
59.2
58.5
58.7
57.6
56.5
55.7
56.2
54.8
53.5
52.5
54.1
52.4
51.0
49.7
50.4
48.3
46.5
44.9
61.7
60.7
59.9
59.2
59.4
58.2
57.2
56.3
56.8
55.4
54.1
52.9
54.6
52.9
51.4
50.1
50.8
48.7
46.7
45.1
62.5
61.5
60.6
59.8
60.1
58.9
57.8
56.8
57.5
55.9
54.6
53.4
55.2
53.4
51.8
50.5
51.3
49.0
47.0
45.3
TONS
PER
SQ. FT.
1.66
1.79
1.90
1.99
1.96
2.10
2.23
2.34
2.27
2.44
2.59
2.71
2.54
2.73
2.89
3.03
2.95
3.17
3.37
3.52
1.74
1.87
1.98
2.07
2.04
2.20
2.33
2.44
2.37
2.55
2.70
2.83
2.65
2.85
3.02
3.16
3.08
3.31
3.51
3.68
1.81
1.95
2.06
2.16
2.13
2.29
2.43
2.54
2.47
2.66
2.82
2.95
2.76
2.97
3.15
3.29
3.21
3.46
3.66
3.84
LVG.
WET
BULB
61.3
60.4
59.6
58.9
59.1
58.0
57.0
56.2
56.7
55.3
54.1
53.1
54.5
52.9
51.5
50.3
50.9
48.9
47.1
45.5
62.1
61.1
60.3
59.6
59.8
58.7
57.7
56.8
57.3
55.9
54.6
53.6
55.1
53.4
51.9
50.7
51.4
49.3
47.4
45.8
62.8
61.9
61.0
60.3
60.5
59.3
58.3
57.4
57.9
56.5
55.2
54.1
55.6
53.9
52.4
51.1
51.8
49.6
47.7
46.0
TONS
PER
SQ. FT.
1.69
1.82
1.93
2.02
2.00
2.15
2.28
2.39
2.33
2.51
2.66
2.78
2.60
2.80
2.97
3.11
3.05
3.28
3.47
3.64
1.77
1.90
2.01
2.11
2.09
2.25
2.38
2.49
2.43
2.62
2.78
2.91
2.72
2.92
3.10
3.25
3.18
3.42
3.63
3.80
1.84
1.98
2.10
2.20
2.18
2.34
2.48
2.60
2.54
2.73
2.89
3.03
2.84
3.05
3.23
3.38
3.32
3.57
3.78
3.96
LVG.
WET
BULB
61.7
60.8
60.0
59.4
59.5
58.4
57.4
56.6
57.1
55.7
54.5
53.5
55.0
53.4
52.0
50.8
51.3
49.3
47.6
46.0
62.4
61.5
60.7
60.0
60.2
59.1
58.1
57.2
57.7
56.3
55.1
54.0
55.5
53.9
52.4
51.2
51.8
49.7
47.9
46.3
63.2
62.2
61.4
60.7
60.9
59.7
58.7
57.9
58.3
56.9
55.6
54.6
56.1
54.4
52.9
51.6
52.2
50.1
48.2
46.5
TONS
PER
SQ. FT.
1.73
1.85
1.97
2.06
2.05
2.20
2.34
2.44
2.39
2.57
2.72
2.86
2.69
2.88
3.08
3.19
3.15
3.38
3.58
3.75
1.80
1.94
2.05
2.15
2.14
2.30
2.44
2.55
2.49
2.68
2.84
2.99
2.79
3.00
3.18
3.33
3.28
3.53
3.74
3.92
1.88
2.02
2.15
2.25
2.23
2.40
2.54
2.66
2.60
2.79
2.97
3.10
2.91
3.14
3.32
3.47
3.42
3.67
3.89
4.09
LVG.
WET
BULB
62.0
61.1
60.4
59.7
59.8
58.7
57.8
57.0
57.4
56.1
55.0
54.0
55.3
53.8
52.4
51.3
51.7
49.8
48.0
46.6
62.7
61.8
61.1
60.4
60.5
59.4
58.5
57.6
58.1
56.7
55.5
54.5
55.9
54.3
52.9
51.7
52.2
50.2
48.4
46.8
63.5
62.6
61.8
61.1
61.2
60.1
59.1
58.3
58.7
57.3
56.1
55.1
56.5
54.8
53.4
52.1
52.6
50.5
48.7
47.1
SQ. FT.
TONS
PER
1.76
1.89
2.00
2.10
2.09
2.25
2.38
2.49
2.44
2.62
2.78
2.91
2.74
2.95
3.12
3.27
3.22
3.47
3.68
3.85
1.84
1.97
2.09
2.19
2.18
2.34
2.49
2.60
2.54
2.74
2.90
3.04
2.86
3.07
3.26
3.41
3.37
3.62
3.84
4.02
1.91
2.06
2.18
2.29
2.27
2.44
2.59
2.71
2.65
2.85
3.02
3.17
2.98
3.21
3.40
3.56
3.51
3.77
4.00
4.19
LVG.
WET
BULB
62.2
61.4
60.7
60.0
60.1
59.1
58.2
57.4
57.8
56.5
55.4
54.5
55.7
54.2
52.9
51.8
52.1
50.2
48.5
47.1
63.0
62.1
61.4
60.8
60.8
59.8
58.8
58.1
58.4
57.1
56.0
55.0
56.3
54.7
53.4
52.2
52.6
50.6
48.9
47.4
63.7
62.9
62.1
61.5
61.5
60.5
59.5
58.7
59.1
57.8
56.6
55.6
56.9
55.3
53.9
52.7
53.0
51.0
49.2
47.6
- 26 -
Page 27
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 45°45°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
65
66
67
68
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
SQ. FT.
PER
.85
.92
.98
1.02
.99
1.06
1.13
1.18
1.13
1.22
1.29
1.35
1.25
1.34
1.43
1.49
1.43
1.53
1.63
1.70
.91
.98
1.04
1.09
1.05
1.13
1.20
1.26
1.21
1.30
1.37
1.44
1.33
1.43
1.51
1.59
1.52
1.63
1.73
1.81
.96
1.04
1.10
1.15
1.11
1.20
1.27
1.33
1.28
1.37
1.46
1.53
1.41
1.51
1.61
1.68
1.61
1.73
1.83
1.92
1.02
1.10
1.16
1.22
1.18
1.27
1.34
1.41
1.35
1.45
1.54
1.61
1.49
1.60
1.70
1.78
1.70
1.83
1.94
2.03
LVG.
WET
BULB
56.8
56.1
55.5
55.0
55.4
54.5
53.8
53.2
53.8
52.8
52.0
51.3
52.5
51.4
50.4
49.6
50.4
49.1
48.0
47.0
57.4
56.7
56.1
55.6
55.9
55.1
54.3
53.7
54.3
53.2
52.4
51.6
52.9
51.7
50.7
49.9
50.7
49.3
48.1
47.1
58.1
57.3
56.7
56.1
56.5
55.6
54.8
54.2
54.8
53.7
52.8
52.0
53.3
52.1
51.1
50.2
51.1
49.6
48.3
47.2
58.7
58.0
57.3
56.7
57.1
56.2
55.4
54.7
55.3
54.2
53.2
52.4
53.8
52.5
51.4
50.5
51.4
49.9
48.5
47,4
TONS
PER
SQ. FT.
.88
.95
1.00
1.05
1.02
1.10
1.17
1.22
1.17
1.26
1.33
1.40
1.30
1.40
1.48
1.55
1.49
1.60
1.69
1.77
.94
1.01
1.07
1.12
1.09
1.17
1.24
1.30
1.24
1.34
1.42
1.48
1.38
1.48
1.57
1.65
1.58
1.70
1.80
1.88
.99
1.07
1.13
1.18
1.15
1.24
1.31
1.37
1.32
1.42
1.50
1.57
1.46
1.57
1.67
1.75
1.67
1.80
1.91
2.00
1.05
1.13
1.20
1.25
1.22
1.31
1.39
1.45
1.39
1.50
1.59
1.66
1.55
1.66
1.76
1.85
1.77
1.90
2.02
2.11
LVG.
WET
BULB
57.1
56.4
55.8
55.4
55.7
54.9
54.2
53.6
54.1
53.2
52.4
51.7
52.8
51.7
50.8
50.0
50.7
49.5
48.4
47.4
57.7
57.0
56.4
55.9
56.3
55.4
54.7
54.1
54.7
53.7
52.8
52.1
53.2
52.1
51.1
50.3
51.1
49.7
48.6
47.6
58.4
57.7
57.0
56.5
56.9
56.0
55.2
54.6
55.2
54.2
53.3
52.5
53.7
52.5
51.5
50.6
51.4
50.0
48.8
47.7
59.1
58.3
57.7
57.1
57,5
56.6
55.8
55.1
55.7
54.6
53.7
52.9
54.2
52.9
51.8
50.9
51.8
50.3
49.0
47.9
TONS
PER
SQ. FT.
.91
.97
1.03
1.08
1.05
1.13
1.20
1.26
1.21
1.30
1.38
1.45
1.35
1.45
1.54
1.61
1.55
1.66
1.76
1.85
.96
1.03
1.10
1.15
1.12
1.20
1.27
1.33
1.29
1.39
1.47
1.54
1.43
1.54
1.63
1.71
1.64
1.77
1.87
1.96
1.02
1.10
1.16
1.22
1.18
1.27
1.35
1.41
1.37
1.47
1.56
1.63
1.52
1.63
1.73
1.81
1.74
1.87
1.99
2.08
1.08
1.16
1.23
1.29
1.25
1.35
1.43
1.50
1.44
1.55
1.65
1.73
1.60
1.72
1.83
1.91
1.84
1.98
2.10
2.20
LVG.
WET
BULB
57.3
56.7
56.1
55.7
55.9
55.2
54.5
54.0
54.4
53.5
62.7
52.0
53.1
52.0
51.1
50.4
51.0
49.8
48.7
47.8
58.0
57.3
56.7
56.3
56.6
55.8
55.1
54.5
54.9
54.0
53.1
52.5
53.5
52.5
51.5
50.7
51.4
50.1
48.9
48.0
58.7
58.0
57.4
56.9
57.2
56.3
55.6
55.0
55.5
54.5
53.6
52.9
54.0
52.9
51.9
51.0
51.7
50.4
49.2
48.1
59.3
58.6
58.0
57.5
57.8
56.9
56.2
55.5
56.0
55.0
54.1
53.3
54.5
53.3
52.2
51.4
52.1
50.7
49.4
48.3
COIL FACE VELOCITY - FPM
TONS
LVG.
WET
BULB
57.6
57.0
56.4
56.0
56.2
55.5
54.8
54.3
54.7
53.8
53.0
52.4
53.4
52.4
51.5
50.8
51.3
50.1
49.0
48.1
58.3
57.6
57.1
56.6
56.8
56.1
55.4
54.8
55.2
54.3
53.5
52.8
53.8
52.8
51.9
51.1
51.7
50.4
49.3
48.3
59.0
58.3
57.7
57.2
57.4
56.6
55.9
55.3
55.8
54.8
54.0
53.3
54.3
53.2
52.2
51.4
52.0
50.7
49.5
48.5
59.6
58.9
58.3
57.8
58.1
57.2
56.5
55.9
56.3
55.3
54.4
53.7
54.8
53.7
52.6
51.8
52.4
51.0
49.8
48.7
TONS
PER
SQ. FT.
.95
1.02
1.08
1.13
1.11
1.20
1.27
1.33
1.29
1.39
1.47
1.54
1.43
1.54
1.64
1.71
1.67
1.79
1.90
1.99
1.01
1.08
1.15
1.20
1.18
1.27
1.35
1.41
1.37
1.47
1.56
1.64
1.52
1.64
1.74
1.82
1.77
1.90
2.02
2.11
1.07
1.15
1.22
1.27
1.25
1.35
1.43
1.50
1.45
1.56
1.66
1.73
1.62
1.74
1.84
1.93
1.88
2.02
2.14
2.24
1.13
1.21
1.29
1.35
1.33
1.43
1.51
1.58
1.54
1.65
1.75
1.83
1.71
1.84
1.95
2.04
1.99
2.14
2.26
2.37
PER
SQ. FT.
.93
1.00
1.06
1.11
1.08
1.16
1.23
1.29
1.25
1.34
1.43
1.49
1.39
1.50
1.59
1.66
1.61
1.73
1.83
1.92
.98
1.06
1.12
1.17
1.15
1.24
1.31
1.37
1.33
1.43
1.51
1.59
1.48
1.59
1.68
1.76
1.71
1.83
1.94
2.04
1.04
1.12
1.19
1.24
1.22
1.31
1.39
1.46
1.41
1.51
1.61
1.68
1.57
1.68
1.79
1.87
1.81
1.94
2.06
2.16
1.10
1.19
1.26
1.32
1.29
1.39
1.47
1.54
1.49
1.60
1.70
1.78
1.66
1.78
1.89
1.98
1.91
2.06
2.18
2.28
LVG.
WET
BULB
57.8
57.2
56.7
56.3
56.4
55.7
55.1
54.6
54.9
54.1
53.3
52.7
53.6
52.7
51.8
51.1
51.5
50.3
49.3
48.4
58.5
57.9
57.3
56.9
57.1
56.3
55.6
55.1
55.5
54.6
53.8
53.1
54.1
53.1
52.2
51.4
51.9
50.6
49.5
48.6
59.2
58.6
58.0
57.5
57.7
56.9
56.2
55.6
56.0
55.1
54.3
53.6
54.6
53.5
52.6
51.8
52.3
51.0
49.8
48.8
59.9
59.2
58.6
58.2
58.3
57.5
56.8
56.2
56.6
55.6
54.7
54.0
55.1
54.0
53.0
52.2
52.7
51.3
50.1
49.0
TONS
PER
SQ. FT.
.97
1.04
1.10
1.15
1.14
1.22
1.30
1.36
1.32
1.42
1.51
1.58
1.48
1.59
1.68
1.76
1.72
1.85
1.96
2.05
1.03
1.11
1.17
1.23
1.21
1.30
1.38
1.44
1.40
1.51
1.60
1.68
1.57
1.69
1.79
1.87
1.83
1.96
2.08
2.18
1.09
1.17
1.24
1.30
1.28
1.38
1.46
1.53
1.49
1.60
1.70
1.78
1.66
1.79
1.89
1.98
1.93
2.08
2.21
2.31
1.15
1.24
1.31
1.38
1.36
1.46
1.55
1.62
1.57
1.69
1.80
1.88
1.76
1.89
2.00
2.10
2.05
2.20
2.33
2.44
LVG.
WET
BULB
58.0
57,4
57.0
56.5
56.7
56.0
55.4
54.9
55.2
54.4
53.6
53.0
53.9
52.9
52.1
51.4
51.8
50.6
49.6
48.8
58.7
58.1
57.6
57.2
57.3
56.6
56.0
55.4
55.8
54.9
54.1
53.5
54.4
53.4
52.5
51.8
52.2
51.0
49.9
49.0
59.4
58.8
58.3
57.8
58.0
57.2
56.5
56.0
56.3
55.4
54.6
54.0
54.9
53.9
52.9
52.2
52.6
51.3
50.2
49.2
60.1
59.5
58.9
58.5
58.6
57.8
57.1
56.6
56.9
56.0
55.1
54.4
55.4
54.3
53.4
52.6
53.0
51.6
50.5
49.5
TONS
PER
SQ. FT.
.98
1.06
1.12
1.18
1.16
1.25
1.33
1.39
1.36
1.46
1.55
1.62
1.52
1.63
1.73
1.81
1.77
1.91
2.02
2.12
1.05
1.13
1.19
1.25
1.24
1.33
1.41
1.48
1.44
1.55
1.64
1.72
1.61
1.73
1.84
1.92
1.88
2.03
2.15
2.25
1.11
1.19
1.27
1.32
1.31
1.41
1.50
1.57
1.53
1.64
1.74
1.82
1.71
1.84
1.95
2.04
2.00
2.15
2.28
2.38
1.17
1.26
1.34
1.40
1.39
1.49
1.58
1.66
1.62
1.74
1.84
1.93
1.81
1.94
2.06
2.16
2.11
2.27
2.41
2.52
LVG.
WET
BULB
58.2
57.7
57.2
56.8
56.9
56.2
55.6
55.1
55.4
54.6
53.9
53.3
54.1
53.2
52.4
51.7
52.0
50.9
49.9
49.0
58.9
58.4
57.9
57.4
57,5
56.8
56.2
55.7
56.0
55.1
54.4
53.8
54.7
53.7
52.8
52.1
52.4
51.2
50.2
49.3
59.7
59.1
58.5
58.1
58.2
57.5
56.8
56.3
56.6
55.7
54.9
54.2
55.2
54.2
53.3
52.5
52.8
51.6
50.5
49.5
60.4
59.8
59.2
58.8
58.9
58.1
57.4
56.9
57.2
56.2
55.4
54.7
55.7
54.6
53.7
52.9
53.3
51.9
50.8
49.8
TONS
PER
SQ. FT.
1.00
1.08
1.16
1.20
1.19
1.29
1.36
1.42
1.39
1.49
1.58
1.66
1.56
1.67
1.78
1.86
1.84
1.98
2.08
2.18
1.07
1.15
1.22
1.27
1.27
1.36
1.44
1.51
1.48
1.59
1.69
1.77
1.65
1.78
1.89
1.98
1.95
2.09
2.21
2.33
1.13
1.22
1.29
1.35
1.34
1.45
1.53
1,60
1.56
1.68
1.79
1.87
1.75
1.89
2.00
2.09
2.06
2.21
2.35
2.46
1.19
1.29
1.36
1.43
1.42
1.53
1.62
1.69
1.66
1.78
1.89
1.99
1.85
2.00
2.14
2.22
2.18
2.35
2.49
2.61
LVG.
WET
BULB
58.4
57.9
57.4
57.0
57.1
56.4
55.8
55.4
55.6
54.8
54.1
53.6
54,4
53.4
52.7
52.0
52.2
51.1
50.2
49.3
59.1
58.6
58.1
57.7
57.7
57.0
56.4
56.0
56.2
55.4
54.7
54.1
54.9
53.9
53.1
52.4
52.7
51.5
50.5
49.6
59.9
59.3
58.8
58.4
58.4
57.7
57.1
56.5
56.8
55.9
55.2
54.5
55.4
54.4
53.5
52.8
53.1
51.8
50.8
49.9
60.6
60.0
59.5
59.0
59.1
58.3
57.7
57.1
57.4
56.5
55.7
55.0
56.0
54.9
54.0
53.2
53.5
52.2
51.1
50.1
TONS
PER
SQ. FT.
1.02
1.10
1.17
1.22
1.22
1.31
1.39
1.45
1.42
1.53
1.62
1.69
1.59
1.72
1.82
1.90
1.88
2.02
2.15
2.24
1.09
1.17
1.24
1.30
1.29
1.39
1.47
1.54
1.51
1.62
1.72
1.80
1.69
1.82
1.93
2.02
1.99
2.15
2.27
2.38
1.15
1.24
1.31
1.38
1.37
1.47
1.56
1.63
1.60
1.72
1.82
1.91
1.80
1.93
2.05
2.14
2.11
2.27
2.41
2.52
1.22
1.31
1.39
1.46
1.45
1.56
1.65
1.73
1.69
1.82
1.93
2.02
1.90
2.04
2.17
2.27
2.24
2.41
2.55
2.67
LVG.
WET
BULB
58.6
58.1
57.6
57.2
57.3
56.6
56.1
55.6
55.8
55.1
54.4
53.8
54.6
53.7
52.9
52.3
52.5
51.4
50.4
49.6
59.3
58.8
58.3
57.9
57.9
57.3
56.7
56.2
56.4
55.6
54.9
54.4
55.1
54.2
53.4
52.7
52.9
51.7
50.7
49.9
60.0
59.5
59,0
58,6
58.6
57.9
57.3
56.8
57.1
56.2
55.5
54.9
55.7
54.7
53.8
53.1
53.3
52.1
51.1
50.2
60.8
60.2
59.7
59.2
59.3
58.6
57.9
57.4
57.7
56.8
56.0
55.4
56.2
55.2
54.3
53.5
53.8
52.5
51.4
50.5
- 27 -
Page 28
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 45°45°
TABLE 4 8°F SUPER HEAT
ENT.
WET
BULB
°F
69
70
71
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
COIL FACE VELOCITY - FPM
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.08
1.16
1.23
1.28
1.24
1.34
1.42
1.49
1.43
1.54
1.63
1.70
1.57
1.69
1.79
1.88
1.79
1.93
2.05
2.14
1.13
1.22
1.92
1.35
1.31
1.41
1.50
1.57
1.50
1.62
1.72
1.80
1.66
1.78
1.89
1.98
1.89
2.03
2.16
2.26
1.19
1.28
1.36
1.43
1.38
1.49
1.57
1.65
1.58
1.70
1.81
1.89
1.74
1.88
1.99
2.08
1.99
2.14
2.27
2.38
WET
BULB
59.4
58.6
57.9
57.3
57.7
56.7
55.9
55.2
55.8
54.6
53.6
52.7
54.2
52.9
51.7
50.7
51.7
50.4
48.7
47.5
60.1
59.2
58.5
57.9
58.3
57.3
56.4
55.7
56.3
55.1
54.0
53.1
54.7
53.3
52.1
51.0
52.1
50.4
48.9
47.6
60.7
59.9
59.1
58.5
58.9
57.9
56.9
56.2
56.8
55.6
54.5
53.5
55.1
53.7
52.4
51.3
52.4
50.6
49.1
47.8
PER
SQ. FT.
1.11
1.19
1.26
1.32
1.29
1.38
1.47
1.53
1.47
1.58
1.68
1.76
1.63
1.76
1.86
1.95
1.87
2.01
2.13
2.23
1.17
1.26
1.33
1.40
1.35
1.46
1.55
1.62
1.59
1.67
1.77
1.85
1.72
1.85
1.96
2.05
1.97
2.12
2.25
2.35
1.23
1.32
1.40
1.47
1.43
1.53
1.63
1.70
1.63
1.76
1.86
1.95
1.81
1.95
2.07
2.16
2.078
2.23
2.36
2.47
WET
BULB
59.7
58.9
58.3
57.7
58.1
57.1
56.3
55.6
56.2
55.1
54.1
53.3
54.6
53.3
52.2
51.2
52.1
50.6
49.2
48.0
60.4
59.6
58.9
58.3
58.7
57.7
56.8
56.1
56.8
55.6
54.6
53.7
55.1
53.7
52.6
51.6
52.5
50.9
49.4
48.2
61.1
60.3
59.5
58.9
59.3
58.3
57.4
56.6
57.3
56.1
55.0
54.1
55.6
54.2
52.9
51.9
52.8
51.1
49.6
48.4
PER
SQ. FT.
1.14
1.23
1.30
1.36
1.32
1.42
1.51
1.58
1.53
1.64
1.74
1.82
1.69
1.82
1.93
2.02
1.94
2.09
2.22
2.32
1.20
1.29
1.37
1.43
1.39
1.50
1.59
1.67
1.61
1.73
1.83
1.92
1.78
1.92
2.04
2.13
2.05
2.20
2.34
2.45
1.26
1.36
1.44
1.51
1.47
1.58
1.67
1.75
1.69
1.82
1.93
2.02
1.88
2.02
2.14
2.24
2.16
2.32
2.46
2.58
WET
BULB
60.0
59.3
58.6
58.1
58.4
57.5
56.7
56.0
56.6
55.5
54.5
53.7
55.0
53.7
52.6
51.7
52.5
51.0
49.6
48.5
60.7
59.9
59.3
58.7
59.0
58.1
57.3
56.6
57.1
56.0
55.0
54.1
55.5
54.1
53.0
52.0
52.9
51.3
49.9
48.7
61.4
60.6
59.9
59.3
59.7
58.7
57.8
57.1
57.7
56.5
55.5
54.6
55.9
54.6
53.4
52.4
53.2
51.6
50.1
48.9
PER
SQ. FT.
1.16
1.25
1.33
1.39
1.36
1.46
1.55
1.63
1.57
1.69
1.79
1.88
1.75
1.88
1.99
2.09
2.02
2.17
2.30
2.41
1.23
1.32
1.40
1.47
1.43
1.54
1.64
1.71
1.66
1.78
1.89
1.98
1.84
1.98
2.10
2.20
2.13
2.29
2.43
2.54
1.29
1.39
1.47
1.54
1.51
1.62
1.72
1.80
1.74
1.88
1.99
2.08
1.94
2.09
2.21
2.32
2.24
2.41
2.55
2.67
WET
BULB
60.3
59.6
59.0
58.5
58.7
57.8
57.1
56.4
56.9
55.8
54.9
54.1
55.3
54.1
53.0
52.1
52.8
51.3
50.0
48.9
61.0
60.3
59.6
59.1
59.4
58.4
57.6
57.0
57.5
56.4
55.4
54.6
55.8
54.5
53.4
52.5
53.2
51.6
50.3
49.1
61.8
61.0
60.3
59.7
60.0
59.0
58.
57.5
58.0
56.9
55.9
55.0
56.3
55.0
53.8
52.9
53.6
52.0
50.5
49.3
PER
SQ. FT.
1.19
1.28
1.36
1.42
1.40
1.51
1.60
1.67
1.62
1.75
1.85
1.94
1.80
1.94
2.06
2.15
2.10
2.26
2.39
2.50
1.26
1.35
1.43
1.50
1.48
1.59
1.68
1.76
1.71
1.84
1.95
2.04
1.90
2.05
2.17
2.27
2.21
2.38
2.52
2.64
1.32
1.42
1.51
1.58
1.55
1.67
1.77
1.86
1.80
1.94
2.05
2.15
2.00
2.15
2.28
2.39
2.33
2.50
2.65
2.78
WET
BULB
60.3
59.9
59.3
58.8
59.0
58.1
57.4
56.8
57.2
56.1
55.2
54.5
55.6
54.5
53.4
52.5
53.1
51.6
50.3
49.3
61.3
60.6
60.0
59.4
59.6
58.7
58.0
57.3
57.7
56.7
55.7
54.9
56.2
54.9
53.8
52.9
53.5
51.9
50.6
49.5
62.0
61.3
60.6
60.1
60.3
59.4
58.6
57.9
58.3
57.2
56.2
55.4
56.7
55.4
54.3
53.3
53.9
52.3
50.9
49.7
PER
SQ. FT.
1.22
1.31
1.39
1.45
1.43
1.54
1.63
1.71
1.66
1.79
1.90
1.98
1.86
2.00
2.12
2.22
2.16
2.32
2.46
2.58
1.28
1.38
1.46
1.53
1.51
1.62
1.72
1.80
1.75
1.88
2.00
2.09
1.96
2.10
2.23
2.34
2.28
2.45
2.60
2.72
1.35
1.45
1.54
1.61
1.59
1.71
1.81
1.90
1.84
1.98
2.10
2.20
2.06
2.21
2.35
2.46
2.40
2.58
2.73
2.86
WET
BULB
60.9
60.1
59.6
59.1
59.3
58.4
57.7
57.1
57.5
56.5
55.6
54.9
56.0
54.8
53.8
52.9
53.4
52.0
50.7
49.7
61.6
60.9
60.3
59.8
59.9
59.1
58.3
57.7
58.1
57.1
56.1
55.4
56.5
55.3
54.2
53.3
53.8
52.3
51.0
49.9
62.3
61.6
61.0
60.4
60.6
59.7
58.9
58.3
58.7
57.6
56.7
55.9
57.0
55.8
54.7
53.7
54.3
52.7
51.3
50.2
PER
SQ. FT.
1.24
1.33
1.41
1.48
1.47
1.58
1.67
1.75
1.71
1.84
1.95
2.04
1.91
2.05
2.17
2.28
2.20
2.40
2.54
2.66
1.31
1.41
1.49
1.56
1.54
1.66
1.76
1.84
1.80
1.94
2.05
2.15
2.01
2.16
2.29
2.40
2.35
2.53
2.68
2.81
1.37
1.48
1.57
1.64
1.63
1.75
1.85
1.94
1.89
2.04
2.16
2.26
2.12
2.28
2.41
2.52
2.48
2.66
2.82
2.95
WET
BULB
61.1
60.5
59.9
59.4
59.5
58.7
58.0
57.4
57.8
5.8
55.9
55.2
56.2
55.1
54.1
53.3
53.7
52.3
51.1
50.0
61.8
61.2
60.6
60.1
60.2
59.4
58.6
58.0
58.4
57.3
56.5
55.7
56.8
55.6
54.6
53.7
54.1
52.7
51.4
50.3
62.6
61.9
61.3
60.8
60.9
60.0
59.3
58.6
59.0
57.9
57.0
56.2
57.3
56.1
55.0
54.1
54.5
53.0
51.7
50.6
PER
SQ. FT.
1.26
1.36
1.44
1.51
1.50
1.61
1.71
1.79
1.75
1.88
1.99
2.09
1.96
2.13
2.23
2.33
2.30
2.47
2.67
2.74
1.33
1.43
1.52
1.59
1.58
1.70
1.80
1.88
1.84
1.98
2.10
2.21
2.06
2.22
2.35
2.46
2.43
2.61
2.76
2.89
1.40
1.57
1.60
1.67
1.66
1.79
1.90
1.99
1.93
2.09
2.21
2.31
2.17
2.34
2.49
2.59
2.55
2.75
2.91
3.04
LVG.
WET
BULB
61.3
60.7
60.2
59.7
59.7
59.0
58.3
57.7
58.0
57.1
56.2
55.6
56.5
55.4
54.4
53.6
54.0
52.6
51.4
50.4
62.1
61.4
60.9
60.4
60.4
59.6
58.9
58.3
58.6
57.6
56.8
56.1
57.1
55.9
54.9
54.1
54.4
53.0
51.7
50.7
62.8
62.1
61.6
61.1
61.1
60.3
59.5
58.9
59.2
58.2
57.3
56.6
57.6
56.4
55.4
54.5
54.8
53.4
52.1
51.0
TONS
PER
SQ. FT.
1.29
1.38
1.47
1.54
1.53
1.64
1.74
1.82
1.78
1.92
2.03
2.13
2.00
2.16
2.29
2.39
2.36
2.54
2.69
2.82
1.36
1.46
1.55
1.62
1.61
1.73
1.84
1.92
1.88
2.02
2.14
2.25
2.11
2.27
2.41
2.52
2.49
2.68
284
2.97
1.43
1.54
1.63
1.70
1.70
1.82
1.93
2.02
1.98
2.13
2.26
2.36
2.22
2.39
2.54
2.66
2.62
2.82
2.99
3.13
LVG.
WET
BULB
61.5
60.9
60.4
59.9
60.0
59.2
58.6
58.0
58.3
57.4
56.6
55.9
56.8
55.7
54.8
54.0
54.2
52.9
51.7
50.7
62.3
61.6
61.1
60.6
60.7
59.9
59.2
58.6
58.9
58.0
57.1
56.4
57.3
56.2
55.2
54.4
54.7
53.3
52.1
51.0
63.0
62.4
618
61.3
61.4
60.5
59.8
59.2
59.5
58.5
57.7
56.9
57.9
56.7
55.7
54.9
55.1
53.7
52.4
51.3
- 28 -
Page 29
DIRECT EXPANSION COIL RATINGS
FOR REFRIGERANT R-22 - 45°45°
TABLE 4 8°F SUPER HEAT
COIL FACE VELOCITY - FPM
ENT.
WET
BULB
°F
72
73
74
COIL
MODEL
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
73
83
103
123
74
84
104
124
75
85
105
125
76
86
106
126
78
88
108
128
400 425 450 475 500 525 550 575 600
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
LVG.
TONS
PER
SQ. FT.
1.25
1.35
1.43
1.50
1.45
1.56
1.66
1.73
1.66
1.79
1.90
1.99
1.83
1.97
2.09
2.19
2.09
2.25
2.39
2.50
1.32
1.42
1.50
1.57
1.52
1.64
1.74
1.82
1.75
1.88
1.99
2.09
1.92
2.07
2.19
2.30
2.20
2.36
2.50
2.62
1.38
1.49
1.57
1.65
1.60
1.72
1.82
1.91
183
1.97
2.09
2.19
2.02
2.17
2.30
2.41
2.30
2.48
2.62
2.75
WET
BULB
61.4
60.5
59.7
59.1
59.5
58.4
57.5
56.7
57.4
56.5
54.9
53.9
55.6
54.1
52.8
51.6
52.7
50.9
49.3
47.9
62.1
61.2
60.3
59.7
60.1
59.0
58.0
57.2
57.9
56.5
55.3
54.3
56.1
54.5
53.1
51.9
53.1
51.2
49.5
48.1
62.8
61.8
61.0
60.3
60.8
59.6
58.6
57.7
58.5
57.0
55.8
54.7
56.5
54.9
53.5
52.3
53.5
51.5
49.7
48.2
PER
SQ. FT.
1.29
1.39
1.47
1.54
1.50
1.61
1.71
1.79
1.72
1.85
1.96
2.05
1.90
2.05
2.17
2.27
2.18
2.34
2.48
2.60
1.36
1.46
1.55
1.62
1.57
1.69
1.79
1.88
1.80
1.94
2.05
2.15
2.00
2.15
2.28
2.38
2.29
2.46
2.61
2.73
1.42
1.53
1.62
1.70
1.65
1.77
1.88
1.97
1.89
2.03
2.15
2.25
2.09
2.25
2.39
2.50
2.40
2.58
2.73
2.86
WET
BULB
61.8
60.9
60.2
59.5
59.9
58.9
58.0
57.2
57.9
56.6
55.5
54.6
56.0
54.6
53.3
52.2
53.2
51.4
49.9
48.5
62.5
61.6
60.8
60.1
60.6
59.5
58.5
57.7
58.4
57.1
56.0
55.0
56.5
55.0
53.7
52.5
53.6
51.7
50.1
48.7
63.2
62.2
61.4
60.8
61.2
60.4
59.1
58.2
59.0
57.6
56.4
55.4
57.0
55.5
54.1
52.9
54.0
52.0
50.3
48.9
PER
SQ. FT.
1.33
1.43
1.52
1.59
1.54
1.66
1.76
1.84
1.78
1.91
2.03
2.12
1.97
2.12
2.25
2.36
2.27
2.44
2.59
2.71
1.39
1.50
1.59
1.66
1.62
1.74
1.85
1.93
1.87
2.01
2.13
2.23
2.07
2.23
2.36
2.47
2.38
2.56
2.71
2.84
1.46
1.57
1.67
1.75
1.70
1.83
1.94
2.03
1.96
2.11
2.23
2.34
2.17
2.34
2.48
2.59
2.49
2.68
2.84
2.98
WET
BULB
62.1
61.3
60.5
59.9
60.3
59.3
58.4
57.7
58.2
57.0
55.9
55.0
56.4
55.0
53.8
52.7
53.6
51.9
50.4
49.1
62.8
62.0
61.2
60.6
61.0
59.9
59.0
58.2
58.8
57.5
56.4
55.5
56.9
55.5
54.2
53.1
54.0
52.2
50.6
49.2
63.5
62.6
61.9
61.2
61.6
60.5
59.6
58.8
59.4
58.1
56.9
55.9
57.5
55.9
54.6
53.4
54.4
52.5
50.9
49.4
PER
SQ. FT.
1.36
1.46
1.55
1.62
1.59
1.71
1.81
1.90
1.83
1.97
2.09
2.19
2.04
2.19
2.33
2.43
2.35
2.53
2.68
2.81
1.43
1.53
1.63
170
1.67
1.79
1.90
1.99
1.92
2.07
2.19
2.30
2.14
2.30
2.44
2.56
2.47
2.66
2.82
2.95
1.49
1.61
1.70
1.78
1.75
1.88
1.99
2.08
2.02
2.17
2.30
2.41
2.24
2.41
2.56
2.68
2.59
2.79
2.95
3.09
WET
BULB
62.5
61.7
61.0
60.4
60.6
59.7
58.8
58.1
58.6
57.4
56.4
55.5
56.8
55.5
54.2
53.2
54.0
52.3
50.8
49.5
63.2
62.3
61.6
61.0
61.3
60.3
59.4
58.7
59.2
58.0
56.9
56.0
57.4
55.9
54.7
53.6
54.4
52.6
51.1
49.7
63.9
63.0
62.3
61.7
62.0
60.9
60.0
59.2
59.8
58.5
57.4
56.4
57.9
56.4
55.1
54.0
54.8
53.0
51.3
50.0
PER
SQ. FT.
1.39
1.49
1.58
1.66
1.63
1.76
1.86
1.95
1.89
2.04
2.16
2.26
2.10
2.26
2.40
2.51
2.44
2.63
2.79
2.92
1.46
1.57
1.66
1.74
1.71
1.84
1.95
2.05
1.99
2.14
2.26
2.37
2.21
2.37
2.52
2.64
2.56
2.76
2.92
3.06
1.53
1.64
1.74
1.82
1.80
1.93
2.05
2.15
2.08
2.24
2.37
2.48
2.31
2.49
2.64
2.76
2.69
2.89
3.07
3.21
WET
BULB
62.8
62.0
61.3
60.7
60.9
60.0
59.2
58.5
58.9
57.8
56.7
55.9
57.2
55.9
54.7
53.7
54.3
52.6
51.2
49.9
63.5
62.7
62.0
614
61.6
60.6
59.8
59.0
59.5
58.3
57.3
56.4
57.7
56.3
55.1
54.1
54.7
53.0
51.5
50.2
64.2
63.4
62.7
62.1
62.3
61.3
60.4
59.6
60.1
58.9
57.8
56.9
58.3
56.8
55.6
54.5
55.1
53.3
51.7
50.4
PER
SQ. FT.
1.42
1.53
1.62
1.69
1.67
1.80
1.90
1.99
1.94
2.08
2.21
2.31
2.16
2.33
2.47
2.58
2.52
2.71
2.87
3.01
1.49
1.60
1.70
1.78
1.75
1.88
2.00
2.09
2.03
2.19
2.32
2.46
2.27
2.44
2.59
2.71
2.64
2.84
3.01
3.16
1.56
1.68
1.78
1.86
1.84
1.98
2.09
2.19
2.13
2.29
2.43
2.54
2.38
2.56
2.71
2.84
2.77
2.98
3.16
3.31
WET
BULB
63.0
62.3
61.6
61.1
61.3
60.3
59.5
58.9
59.3
58.2
57.2
56.4
57.6
56.2
55.1
54.1
54.7
53.1
51.6
50.4
63.8
63.0
62.3
61.8
61.9
61.0
60.2
59.5
59.9
58.7
57.7
56.9
58.1
56.7
55.6
54.6
55.1
53.4
52.0
50.7
64.5
63.7
63.0
64.2
62.6
61.6
60.8
60.1
60.5
59.3
58.3
57.4
58.6
57.2
56.0
55.0
55.6
53.8
52.3
51.0
PER
SQ. FT.
1.44
1.55
1.65
1.72
1.71
1.84
1.95
2.04
1.99
2.14
2.27
2.38
2.22
2.39
2.53
2.65
2.60
2.80
2.97
3.11
1.52
1.63
1.73
1.81
1.79
1.93
2.04
2.14
2.09
2.25
2.38
2.49
2.33
2.51
266
2.78
2.73
2.94
3.11
3.26
1.59
1.71
1.81
1.90
1.88
2.02
2.14
2.24
2.19
2.36
2.50
2.61
2.45
2.63
2.79
2.92
2.86
3.08
3.26
3.42
WET
BULB
63.3
62.6
62.0
61.4
61.5
60.7
59.9
59.2
59.6
58.5
57.5
56.7
57.9
56.6
55.5
54.6
55.0
53.4
52.0
50.8
64.1
63.3
62.7
62.1
62.2
61.3
60.5
59.8
60.2
59.1
58.1
57.2
58.4
57.1
56.0
55.0
55.4
53.8
52.3
51.1
64.8
64.0
63.4
62.8
62.9
62.0
61.1
60.4
60.8
59.6
58.6
57.8
59.0
57.6
56.4
55.4
55.9
54.2
52.7
51.4
SQ. FT.
PER
1.47
1.58
1.68
1.76
1.76
1.88
1.99
2.08
2.04
2.19
2.32
2.43
2.28
2.46
2.60
2.73
2.68
2.88
3.05
3.20
1.54
1.66
1.76
1.85
1.83
1.97
2.09
2.19
2.14
2.30
2.44
2.55
2.40
2.58
2.73
2.87
2.81
3.02
3.20
3.38
1.62
1.74
1.86
1.93
1.93
2.07
2.19
2.30
2.49
2.42
2.56
2.68
2.51
2.70
2.86
3.01
2.95
3.17
3.36
3.51
LVG.
WET
BULB
63.6
62.9
62.3
61.7
61.8
60.9
60.2
59.5
59.9
58.8
57.9
57.1
58.2
56.9
55.9
54.9
55.3
53.7
52.4
51.2
64.3
63.6
63.0
62.4
62.5
61.6
60.8
60.2
60.5
59.4
58.4
57.6
58.7
57.5
56.3
55.4
55.8
54.1
527
515
65.1
64.3
63.7
63.1
63.2
62.3
61.5
60.8
61.1
60.0
59.0
58.2
59.3
58.0
56.8
55.8
56.2
54.5
53.1
51.8
TONS
PER
SQ. FT.
1.50
1.61
1.71
1.79
1.78
1.92
2.03
2.13
2.08
2.24
2.37
2.48
2.34
2.51
2.67
2.79
2.75
2.96
3.14
3.28
1.57
1.69
1.80
1.88
1.87
2.01
2.13
2.23
2.18
2.35
2.49
2.61
2.45
2.64
2.80
2.93
2.89
3.11
3.29
3.45
1.65
1.78
1.88
1.97
1.96
2.11
2.24
2.34
2.29
2.46
2.61
2.73
2.57
2.77
2.93
3.07
3.03
3.26
3.45
3.61
LVG.
WET
BULB
63.8
63.1
62.5
62.0
62.1
61.2
60.5
59.9
60.2
59.1
58.2
57.5
58.5
57.3
56.2
55.3
55.6
54.1
52.8
51.6
64.5
63.8
63.2
62.7
628
61.9
61.1
60.5
60.8
59.7
58.8
58.0
59.1
57.8
56.7
55.8
56.1
54.5
53.1
51.9
65.3
64.6
63.9
63.4
63.5
62.6
61.8
61.1
61.5
60.3
59.4
58.6
59.6
58.3
57.2
56.3
56.5
54.9
53.5
52.3
- 29 -
Page 30
FIGURE 3
DEHUMIDIFYING COIL
BASIC RATING CURVES - R-12
BASE RATING TOTAL TONS PER SQ. FT. FACE AREA
(For Sensible Total Ratios of .9 or Less)
ENTERING AIR WET BULB TEMP., °F
60 65 70 75 80 85
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
BASE RATING - TOTAL TONS (PER SQ. FT. FACE AREA)
0.8
24 26 28 30 32 34 36 38 40 42 44 46 48 50
TOTAL HEAT, BTU / LB.
VELOCITY AND ROW CORRECTION FACTOR - R-12
FIGURE 4
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
FIN SERIES TOTAL CAPACITY
CORRECTION FACTORS
TABLE 5
FIN
SERIES
70 .93
80 1.00
100 1.06
120 1.11
CORRECTION
FACTOR
0.6
VELOCITY AND ROW CORRECTION FACTOR
0.5
0.4
200 300 400 500 600 700
FACE VELOCITY, F.P.M. (STD. AIR)
- 30 -
Page 31
FIGURE 5
DEHUMIDIFYING COIL
BASIC RATING CURVES - R-22
BASE RATING TOTAL TONS PER SQ. FT. FACE AREA
(For Sensible Total Ratios of .9 or Less)
ENTERING AIR WET BULB TEMP., °F
60 65 70 75 80 85
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
BASE RATING - TOTAL TONS (PER SQ. FT. FACE AREA)VELOCITY AND ROW CORRECTION FACTOR
0.8
24 26 28 30 32 34 36 38 40 42 44 46 48 50
TOTAL HEAT, BTU / LB.
VELOCITY AND ROW CORRECTION FACTOR - R-22
FIGURE 6
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
FIN SERIES TOTAL CAPACITY
CORRECTION FACTORS
TABLE 6
FIN
SERIES
70 .93
80 1.00
100 1.06
120 1.11
CORRECTION
FACTOR
0.6
0.5
0.4
200 300 400 500 600 700
FACE VELOCITY, F.P.M. (STD. AIR)
- 31 -
Page 32
DEHUMIDIFYING COIL
WET BULB DEPRESSION FACTORS
FIGURE 7 70-80-100-120 FIN SERIES
0.30
Figure 7a
70 FIN
SERIES
0.20
3 ROWS DEEP
4
5
Figure 7b
80 FIN
SERIES
Figure 7c
100 FIN
SERIES
0.10
WET BULB DEPRESSION FACTOR
0
200 300 400 500 *600 700 800
0.30
0.20
0.10
WET BULB DEPRESSION FACTOR
0
200 300 400 500 *600 700 800
0.30
0.20
6
8
10
3 ROWS DEEP
4
5
6
8
10
3 ROWS DEEP
4
Figure 7d
120 FIN
SERIES
0.10
WET BULB DEPRESSION FACTORWET BULB DEPRESSION FACTOR
0
200 300 400 500 *600 700 800
0.30
0.20
0.10
0
200 300 400 500 *600 700 800
5
6
8
10
3 ROWS DEEP
4
5
6
8
10
FACE VELOCITY - FPM (STD. AIR)
- 32 -
Page 33
SENSIBLE COOLING COIL SELECTION
EXAMPLE PROBLEM NO. 4
(Sensible Total Ratios Greater than .90 -Dry Coil)
(Showing use of Dry Coil Basic Rating Curves, Pages 28 & 29)
GIVEN:
Entering Air Dry Bulb................................................................................................75 F
Entering Air Wet Bulb...............................................................................................56 F
CFM (Std. Air)........................................................................................................1600
Leaving Air Dry. Bulb..............................................................................................55 F
Leaving Air Wet Bulb.............................................................................................47.6 F
Refrigerant Temperature..........................................................................................45 F
Refrigerant.............................................................................................................. R-22
Maximum Face Velocity....................................................................................500 FPM
SOLUTION
1. TOTAL BTUH REQUIRED
Total Btuh = 4.5 X cfm X (total heat difference) (Formula 1)
Total heat entering air @ 56°F wet bulb = 23.84
@ 47.6°F wet bulb = 19.00
Total heat difference = 4.84 Btu/lb.
( Table 2, Page 10)
Total Btuh = 4.5 X 1600 X 4.84 = 34,800
2. SENSIBLE BTUH REQUIRED
Sensible Btuh = 1.09 X cfm X (ent air dry bulb lvg air dry bulb) (Formula 2, Page 5)
= 1.09 X 1600 X 20
= 34,800
3. SENSIBLE TOTAL RATIO
S/T Ratio =
As the S/T ratio is above .90 this is a sensible cooling
application. (Plotting conditions on Psychrometric chart
indicates a constant dew point i.e. no moisture removal.)
4. MINIMUM FACE AREA REQUIRED
FA =
face veIocity 500
5. PHYSICAL SIZE OF COIL
From table 1 Page 6 select a coil that has a face area equal
to greater than 3.2 sq. ft. For this example assume the
correct selection is a 12 X 39 coil with a face area of
3.25 sq. ft.
6. TONS PER SQ. FT. REQUIRED
Tons/Sq. Ft. =
sens btuh = 34,800
total btuh 34,800
cfm = 1600
total btuh
face area X 12,000 3.25 X 12,000
=1.00 (Formula 6, Page 5)
= 3.2 Sq. Ft. (Formula 4, Page 5)
34,800
=
= .89
7. BASE RATING
Turn to the R22 Sensible Base Rating Curves, Fig. 10,
Page 35. The base rating for 75 EA D.B. and 45 F
refrigerant temperature is .94 tons/sq. ft.
8. VELOCITY AND ROW CORRECTION FACTOR
REQUIRED
Assume standard series 80 coil.
VR correction factor =
(base rating) X (fin corr, factor)
.89
.94 X 1.00
(Where: 1.00 = Fin corr. factor)
9. ROWS DEEP REQUIRED
Turn to R22 Velocity and row correction Factor curves.
(Figure 11, Page 35). At the required V.R. Correction
Factor of .95 and 500 ft/min. a 4 row coil will be required.
This coil has an actual velocity and row correction factor
of 1.00.
10. ACTUAL SENSIBLE CAPACITY BTUH OF 4 ROW
SERIES 80 COIL
Total btuh = 12,000 X (base rating) X (face area) X
(VR corr. factor) X (fin series factor)
= 12,000 X .94 X 3.20 X 1.00 X 1.00
= 36,000 BTU/HR
11. LEAVING AIR DRY BULB TEMPERATURE
Leaving air Dry Bulb Temperature = Entering Air Dry BulbTemperature difference.
T. D. of Air =
1.09 X CFM
= 20.6°F.
Leaving Air Dry Bulb = 75°F - 20.6°F = 54.4°F.
=
1.09 X 1600
tons/sq. ft.
Coil Btuh
36,000
= .95
(sensible)
- 33 -
Page 34
FIGURE 8
SENSIBLE COOLING COIL
BASIC RATING CURVES - R-12
BASE RATING TOTAL TONS PER SQ. FT. FACE AREA
(For Sensible Total Ratios Greater Than .9 - Dry Coil)
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
BASE RATING - TOTAL TONS (PER SQ. FT. FACE AREA)
0.4
40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
ENTERING AIR DRY BULB TEMP., °F
VELOCITY AND ROW CORRECTION FACTOR - R-12
FIGURE 9
2.0
1.8
1.6
1.4
1.2
1.0
0.8
FIN SERIES SENSIBLE CAPACITY
CORRECTION FACTORS
TABLE 7
FIN
SERIES
70 .93
80 1.00
100 1.06
120 1.11
CORRECTION
FACTOR
0.6
VELOCITY AND ROW CORRECTION FACTOR
0.4
200 300 400 500 600 700
FACE VELOCITY, F.P.M. (STD. AIR)
- 34 -
Page 35
FIGURE 10
SENSIBLE COOLING COIL
BASIC RATING CURVES - R-22
BASE RATING TOTAL TONS PER SQ. FT. FACE AREA
(For Sensible Total Ratios Greater Than .9 - Dry Coil)
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
BASE RATING - TOTAL TONS (PER SQ. FT. FACE AREA)
0.6
0.4
40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
ENTERING AIR DRY BULB TEMP., °F
VELOCITY AND ROW CORRECTION FACTOR - R-22
FIGURE 11
2.0
1.8
1.6
1.4
1.2
1.0
0.8
FIN SERIES SENSIBLE CAPACITY
CORRECTION FACTORS
TABLE 8
FIN
SERIES
70 .93
80 1.00
100 1.06
120 1.11
CORRECTION
FACTOR
0.6
VELOCITY AND ROW CORRECTION FACTOR
0.4
200 300 400 500 600 700
FACE VELOCITY, F.P.M. (STD. AIR)
- 35 -
Page 36
KDX COIL AIR FRICTION - DRY / WET
FIGURE 12 - AIR FRICTION DRY COILS 80 FIN SERIES
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
AIR SIDE FRICTION LOSS (INCHES OF WATER)
0.1
0
200 300 400 500 600 700
800
FACE VELOCITY (FEET PER MINUTE OF STD AIR)
AIR FRICTION FACTOR (F.)
(DUE TO WETTED SURFACE)
F
equals 1.35* for wet coils in the normal air, conditioning range.
w
For conditions outside the normal air conditioning range (extreme
humidity conditions) with air velocities over 350 feet per minute, and
with vertical up air flow, the wet coil air friction factor can be as high as
1.75. Consult the factory in the case, of such unusual applications.
EXAMPLE CALCULATION
Calculate the air friction at 500 fpm for a 4 row 100 fin series coil.
Air friction = (dry air friction) x Fw x F
= .285 x 1.35 x 1.16 = .446 in. H.O
Where: .285 = dry air friction for 80 fin series at 500 fpm
and 4 rows deep (figure 12 left)
1.35 = Fw friction factor due to wetted surface
1.16 = Ffr fin series correction factor for 100 fin
series (Table 9 below)
FIN SERIES AIR FRICTION CORRECTION FACTORS
FIN SERIES 70 80 100 120
FACTOR F
* For lower humidity conditions lower values of Fw can be used. F
equals approximately 1.12 when the temperature difference is 10°F
or less between entering air dewpoint and entering refrigerant F
equals approximately 1.24 when the temperature difference is 11°F
to 18 °F between entering air dewpoint and entering refrigerant.
fr
fr
TABLE 9
.87 1.00 1.16 1.33
w
w
CAPACITY REDUCTION APPLICATIONS
With the introduction of capacity reduction compressors of
larger sizes, the use of coils circuited for capacity
reduction has increased. In many cases with capacity
reduction compressors of larger sizes, several coils have
been installed banked one above another or one behind
another or both and one or more coils cut out of the system
when the compressor Is operating at reduced capacity to
balance the evaporator capacity with the compressor
capacity.
Banking one coil above another and cutting one coil out is
face-control and banking one coil behind another in
direction of airflow is row-control. On jobs where only one
coil is required, we are occasionally requested to furnish
coils eirculted for face-control or row-control or both.
KeepRite can circuit coils to meet either requirement.
The particular application and desired results for each
application must be checked to determine which type of
control is most desirable for each individual case. KeepRite
Sales Representatives welcome the opportunity to assist
in determining face or row control
FACE CONTROL
Many standard KeepRite Coils are furnished with 2
distributors and 2 sets of suction connections. Such coils
can be used for 50% reduction face control.
ROW CONTROL
Coils used for row-control cannot always be circuited
for the reduction capacities desired because the
capacity splits available are limited. The reason is that
each row of a cooling coil does not have the same
capacity. The first row always carries the biggest part of
the load and the last row the smallest part. Face
velocity affects the portion of the load handled by each
row. At a 500 fpm face velocity the first two rows of a
KDX88 coil handle 38 percent of the total capacity. The
first four rows handle 66 percent of the total and
therefore a KDX88 coil at a 500 fpm face velocity can
be used for row-control when one third-two thirds
reduction is desired. A KDX85 coil usually works out for
50 percent reduction row-control requirements. The first
two rows handle approximately 52 percent of the total
load and the last 3 rows the remaining 48 percent.
When other row-control splits are required, consult the
local KeepRite Representative to see if a coil can be
circuited to meet the requirements. In any case, when
row-control coils are ordered include total capacity,
type of refrigerant, face velocity and capacity splits
required.
- 36 -
Page 37
COIL DIMENSIONS
ROWS DEEP 2 3 4 5 6 8 10
DIM. 'D' 5 6 7 1/2 9 10 1/2 13 1/2 16 1/2
INSTALL COILS FOR COUNTERFLOW, i.e. SUCTION HEADER ON
ENTERING AIR SIDE
- 37 -
11/2” FOR HALF AND SINGLE SERPENTINE
21/4” FOR DOUBLE SERPENTINE
1. Liquid conn. sizes (O.D. inches) 5/8, 7/8, 1 1/8 or
1 5/8 (dependent upon load).
2. Suction conn. sizes (O.D. inches) 7/8, 1 5/8, 2 1/8 or
2 5/8 (located at bottom of each header section)
3. For coils installed for horizontal air flow, specify
either R.H. or L.H. connections. Handling is
determined by facing into the air stream. R.H. coil
will have suction conn. on R.H. side. L.H. coil will
have suction conn. on L.H. side.
4. For coils installed for vertical air flow, suction header
should be on entering air side.
5. Coils shown are not suitable for instailation in
KeepRite A. H. units. Consult factory for separate
dimensional data.
Page 38
DIRECT EXPANSION COOLING COILS
TYPICAL SPECIFICATIONS
GENERAL
Furnish and install where shown on the plans and as
described in the tabulation KeepRite or equal Direct
Expansion Type KDX Cooling Coils of the extended
surface, non-ferrous fin type.
Suction headers shall be extra heavy seamless
copper tubing designed to permit expansion and
contraction without creating undue stress or strain.
Primary surface shall be round -5/8” outside
diameter copper tubing brazed into header tube holes
or small radius return bends.
Secondary surface shall consist of rippled aluminum
plate fins for greater structural strength and higher
capacity. Flat plate fins that do not tend to act as
eliminator plates will not be acceptable. Fins shall
have drawn, full fin collars, to provide a continuous
primary surface cover over the entire tube without
sharp edges which can accumulate lint. Tubes shall
be expanded into the fins to provide continuous
primary to secondary compression contact over the
entire finned length without the use of low
conductivity solder bonding agents.
Casings shall be constructed of heavy gauge
galvanized steel with 3/8” diameter mounting holes
for ease in bolting to steam or water coils or to duct
work. Coil side plates shall be of the reinforced
flange type for greater strength and ease in
stacking coils in banks. Coils shall have equal
pressure drop through all circuits. All long coils shall
have fin angles to hold the fin-tube assembly
positively in place.
Brass liquid distributors factory mounted of the
pressure type shall be furnished. Loading per
circuit must be such that the refrigerant pressure
drop is within reasonable limits to prevent loss of
coil capacity.
Tubes shall be on 1 1/2" centers and tubes shall
not be omitted from the tube pattern. Coils must
contain a minimum primary area of 1.13 square feet
of surface per square foot of face area per row deep.
Coils shall be tested with 300 pound air pressure
under warm water, and guaranteed for 200 psi
gauge working pressure. Coils shall be dehydrated
with 140°F. D.B. -40°F., dew point air before
shipment. Coils hydrostatically tested will not be
permitted. All coils shall be circuited in a counterflow
manner with uniform circuits.
- 38 -
Page 39
- 39 -
Page 40
US
C
NA TIONAL REFRIGERA TION &
03/17/07
AIR CONDITIONING CANADA CORP.
CANADA
159 ROY BL VD., BRANTFORD, ONT ARIO, CANADA N3R 7K1
PHONE: 1-800-463-9517 (519)751-0444 FAX (519)753-1140
Due to National Refrigeration’s policy of continuous product improvement, we reserve the right to make changes without notice.
USA
985 WHEELER WA Y, LANGHORNE, P A. 19047 USA
PHONE:1-888-KEEPUS1 OR 1-888-533-7871
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