Carrier AIRSTREAM 42BHC Operation manual

Copyright 2003 Carrier Corporation Form 42BHC-1PD
Satisfy All Your Design Requirements
with Carrier’s Versatile 42BHC Fan
Coil Unit
• A selection of 6 sizes covers
capacities from 800 to 4000 cfm
• Choice of motors, from 1/4to 3 hp,
eliminates oversizing
• Wide range of coil options for 2-pipe
or 4-pipe system
• Optional DX coils with expansion
valve and distributor
• Single and three-phase electric
heat (1.0 to 40 kW)
Features/Benefits
The 42BHC fan coil unit
provides year-round comfort
air conditioning with central
station operating economy.
A variety of coil options
reduces first cost
Four, 6 or 8-row cooling coils combine
the capacities you need with the most
efficient heat transfer surface. For
4-pipe systems, select either of two
split-coil options. Coils consist of alu-
minum fins securely bonded to 1/2-in.
OD seamless copper tubes. Each fin’s
aluminum collar ensures accurate con-
trol of the fin spacing, while complete-
ly covering the tubes to lengthen coil
life. All coils also feature manual air
vents, with automatic air vent available
as an option.
Fan wheels are designed to
provide low operating costs
The forward-curved, centrifugal,
double-inlet fans are statically and
dynamically balanced at the factory to
minimize transmission of vibration
to the building structure.
42BHC
System Fan Coil
800 to 4000 Cfm
Product
Data
STANDARD 42BHC UNIT
42BHC UNIT WITH ELECTRIC HEAT

2
The belt-driven motor (single or
three phase) has a variable-pitch pulley
which adjusts at the jobsite to accom-
modate limited ranges of air quantities
and pressures.
All motors (single and three phase)
are UL listed, factory wired, single
speed with thermal overload protec-
tion and are continuous duty rated.
Motors are supplied with permanently
lubricated bearings, class-B insulation
and are open drip-proof. The motor
mount has an adjustable platform for
easy belt adjustment. The motor and
its mounting are independently isolated
from the cabinet and the blower. An
adjustable pitch pulley allows cfm bal-
ancing to meet system requirements.
Motor drive packages are provided
with keyed pulleys.
Complete factory assembly
minimizes on-the-jobsite costs
and problems
Compact, lightweight units are
designed for easy mounting. Knock-
outs designed to accept 3/8-in. thread-
ed rod are provided on the top and
bottom of each corner of the unit
One-in. duct flanges on discharge and
on return are furnished standard.
These integral duct flanges cut installa-
tion time and labor expense.
Durable construction means
easy-to-maintain units
The 42BHC casings are fabricated
from heavy-gage galvanized G90 steel,
reinforced for maximum rigidity and
structural strength. Removable side
panels with tool-less camlock latches
allow easy access for servicing interior
components.
One-inch matte surface, fiberglass
thermal/acoustical insulation lines the
fan coil cabinets to prevent sweating
and to muffle sound transmission.
The stainless steel, double-sloped
condensate drain pan extends under
full coil surface to cut maintenance
costs.
Slide-in return-duct collar filter
makes it possible to remove and
replace the filter without disturbing
return air ductwork.
Coil
Rows
–––––––––––––––––––––
B–4, 2-Pipe
L–6, 2-Pipe
H–4/1, Same End Conn.
K–4/2, Same End Conn.
N–6/1, Same End Conn.
Q–6/2, Same End Conn.
R–8, 2-Pipe
1–4 With Electric Heat
2–6 With Electric Heat
3–8 With Electric Heat
42BH C 08 L
42BH –System Fan Coil Unit
Design
Size
Nominal
Cfm
–––––––––––
08 –800
12 –1200
16 –1600
20 –2000
30 –3000
40 –4000
NOTE: Refer to current 42 Series Mas-
ter Prices for complete model definition,
including motor, cfm and total static
pressure.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Factory-Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19,20
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23
Model number nomenclature
Physical data
UNIT SIZE 42BHC 08 12 16 20 30 40
NOMINAL CFM 800 1200 1600 2000 3000 4000
SHIPPING WT (lb) (no heat/ with heat) 205/246 256/300 312/356 344/390 437/484 553/600
FILTERS
Number...Size (in.) 1...161/2x 24 1...181/4x 33 2...181/4x 211/22...201/2x 22 2...29 x 22 2...29 x 29
Face Area (sq ft) 2.8 4.2 5.5 6.3 8.9 11.7
COILS
Size (in.) 15 x 20 15 x 29 15 x 39 18 x 40 27 x 40 27 x 54
Face Area (sq ft) 2.0 3.0 4.0 5.0 7.5 10.0
FANS
Number...Size (in.) 1...9 x 6 1...10 x 7 1...11 x 10 1...12 x 9 1...12 x 12 1...15 x 12
COPPER COIL CONN. 4, 6 AND 8 ROW (in.) (Cooling) 7/8OD 7/8OD 11/8OD 11/8OD 15/8OD 15/8OD
COPPER COIL CONN. 1 AND 2 ROW (in.) (Heating) 5/8OD 5/8OD 5/8OD 5/8OD 5/8OD 5/8OD
DRAIN CONN. SIZES (in.) 3/4MPT 3/4MPT 3/4MPT 3/4MPT 3/4MPT 3/4MPT

3
The 42BHC units are designed to offer maximum flexibility
in application, accessibility for service, quiet operation and
durability.
Motors — A wide selection of standard motors provides
efficient operation in ducted applications with excellent
performance with up to 2 inches of total static pressure.
Available motor options:
• 115 v, 208 v, 230 v and 277 v single-phase 60 Hz
• 208 v, 230 v and 460 v three-phase 60 Hz
• Open drip-proof motors
• External junction box
Coils — A choice of two-pipe system with 4-row cooling/
heating or four-pipe system with 4, 6 or 8-row cooling and
1 or 2 row heating.
Electric heat — Total electric heat eliminates the require-
ment for a boiler. Heating and/or cooling may be available
on an individual basis throughout the year. Resistance
electric heat is available from 1.0 kW to 40.0 kW (refer to
electric heater data table for availability per unit) with
single-stage or multiple-stage, single power source.
Voltages:
• 115 v, 208 v, 230 v and 277 v single-phase 60 Hz
• 208 v, 230 v and 480 v three-phase 60 Hz
Electric heat is available with the following staging options
(3-phase staging is balanced).
• 1 to 4 kW 1 stage only — single phase
• 5 to 12 kW 1 or 2 stage only — single phase
• 1 to 12 kW 1 stage only — 3 phase
• 15 to 20 kW 1 or 2 stage only — 3 phase
• 25 to 40 kW 1, 2, or 3 stage — 3 phase
Heater coils are constructed of high-grade resistance
wire that is supported by ceramic insulators on plated steel
brackets. These heat elements are suspended directly in
front of the outlet after the blower and the coil. High limit
thermal cutouts protect the heater in the event of air
failure.
Controls
• Interlocking disconnect switch
• Heater power fusing
• 24 v Class 2 transformer (40 va)
• 8-pole control terminal strip
• Auto reset temperature limit switch
• Airflow safety switch
• Motor power fusing
• Motor control contactor
Filters — Filters are available, 2-in. pleated as standard.
One-in. pleated or two 1-in. throwaway filters are
available.
Insulation — Units are available with edge sealed, 1-in.
thick Tuf-Skin™ RX or foil-faced insulation. (Tuf-Skin™ II
insulation is standard.).
Factory-installed options

4
Dimensions
J
G
2
K
TOP VIEW
HANGER ROD
HOLES 5/8"
(TYP. OF 4)
4X4 J-BOX
(SAME SIDE AS
COIL CONNECTIONS)
HANGER ROD
(TYP. OF 4)
1" INSET FROM
A & B DIM.
L
C
DF
A
FRONT VIEW
2 7/8
E
COIL SUPPLY CONN.
COIL RETURN CONN.
1 3/8
B
1 1/16
H
3 3/16
3/4" MPT DRAIN CONNECTION
1/2" MPT SECONDARY DRAIN CONNECTION
(CAPPED)
SIDE VIEW
UNIT INSTALLATION
REF. VIEW ONLY
SIDE ACCESS PANEL
1" RETURN AIR COLLAR
FILTER TRACK
1" SUPPLY AIR COLLAR
SUPPLY AIR
NOTES:
1. Any modifications to product specifications by any person are
subject to acceptance of the factory. Product specifications are
subject to change without notice.
2. All dimensions are in inches (±1/4in.).
3. RH shown, LH opposite.
4. Hanger rods, which are field-supplied, are shown for reference
only.
UNIT
42BHC
DIMENSIONS (in.)
ABCDEFGHJKL
08 2811/16 363/16 181/285/8109/16 137/8241/16 167/16 273/16 351/411/8
12 371/16 373/4201/410 1111/16 137/8331/16 183/16 363/16 3613/16 11/8
16 471/16 3715/16 201/4137/16 1211/16 1613/16 431/16 183/16 463/16 37 11/8
20 481/16 403/8223/4125/8133/4173/4441/16 2011/16 473/16 397/16 11/8
30 481/16 403/831 1515/16 133/4161/16 441/16 2615/16 473/16 397/16 61/8
40 621/16 439/16 31 167/16 161/16 2213/16 581/16 2615/16 613/16 425/851/8
42BHC BASE UNIT WITH 4 x 4 J BOX

5
J
G
2
K
HANGER ROD
HOLES 5/8"
(TYP. OF 4) TOP VIEW
CONTROL BOX
(SAME SIDE AS
COIL CONNECTIONS)
10
C
FRONT VIEW
A
E
DF
1" SUPPLY AIR COLLARS
L
UNIT INSTALLATION
REF. VIEW ONLY
COIL SUPPLY CONN.
1 3/8
1 1/16
8 3/4
SIDE VIEW
B
COIL RETURN CONN.
1" RETURN AIR COLLAR
H
1 1/16
3 3/16
3/4" MPT DRAIN CONNECTION
1/2" MPT SECONDARY DRAIN CONNECTION
(CAPPED)
FILTER TRACK
SIDE ACCESS PANEL
HANGER ROD
(TYP. OF 4)
1" INSET FROM
A & B DIM.
NOTES:
1. Any modifications to product specifications by any person are
subject to acceptance of the factory. Product specifications are
subject to change without notice.
2. All dimensions are in inches (±1/4in.).
3. RH shown, LH opposite.
4. Hanger rods, which are field-supplied, are shown for reference
only.
UNIT
42BHC
DIMENSIONS (in.)
ABCDEFGHJKL
08 2811/16 363/16 181/285/8109/16 137/8241/16 167/16 273/16 351/411/8
12 371/16 373/4201/410 1111/16 137/8331/16 133/16 363/16 3613/16 11/8
16 471/16 3715/16 201/4137/16 1211/16 1613/16 431/16 183/16 463/16 37 11/8
20 481/16 403/8223/4125/8133/4173/4441/16 2011/16 473/16 397/16 11/8
30 481/16 403/831 1515/16 133/4161/16 441/16 2615/16 473/16 397/16 61/8
40 621/16 439/16 31 167/16 161/16 2213/16 581/16 2615/16 613/16 425/851/8
42BHC WITH MOTOR CONTROL OPTION

6
Dimensions (cont)
J
G
2
K
HANGER ROD
HOLES 5/8"
(TYP. OF 4)
TOP VIEW
20 CONTROL BOX
(SAME SIDE AS
COIL CONNECTIONS)
HANGER ROD
(TYP. OF 4)
1" INSET FROM
A & B DIM.
UNIT INSTALLATION
REF. VEW ONLY
SIDE ACCESS PANEL
MDF
C
A
FRONT VIEW
ELECTRIC HEAT
ELEMENTS
N
L
16 1/2
COIL SUPPLY CONN.
1 3/8
AIR FLOW
1" SUPPLY COLLAR
8 3/4 B
SIDE VIEW
COIL RETURN CONN.
H
1 1/16
3/4" MPT DRAIN CONNECTION
1/2" MPT SECONDARY DRAIN CONNECTION
(CAPPED)
3 3/16
E
1" RETURN AIR COLLAR
FILTER TRACK
NOTES:
1. Any modifications to product specifications by any person are
subject to acceptance of the factory. Product specifications are
subject to change without notice.
2. All dimensions are in inches (±1/4in.).
3. RH shown, LH opposite.
4. Hanger rods, which are field-supplied, are shown for reference
only.
UNIT
42BHC
DIMENSIONS (in.)
A BCD E F G H J KLMN
08 2811/16 363/16 181/285/8109/16 137/8241/16 167/16 273/16 351/411
1/861/4
12 371/16 373/4201/410 1111/16 137/8331/16 133/16 363/16 3613/16 11
1/861/4
16 471/16 3715/16 201/4137/16 1211/16 1613/16 431/16 183/16 463/16 37 1 11/833/8
20 481/16 403/8223/4125/8133/4173/4441/16 2011/16 473/16 397/16 11
1/827/16
30 481/16 403/831 1515/16 133/4161/16 441/16 2615/16 473/16 397/16 66
1/841/16
40 621/16 439/16 31 167/16 161/16 2213/16 581/16 2615/16 613/16 425/855
1/8—
42BHC WITH ELECTRIC HEAT

7
1
3
2
4
LEFT HAND UNIT
1
2
4
3
RIGHT HAND UNIT
UNIT CORNER WEIGHTS (lb)
NOTE: Unit weights (shown in pounds) ±10 percent, are based on the largest water-filled coil and 1 Hp motor.
UNIT
42BHC CONFIGURATION RIGHT-HAND UNITS LEFT-HAND UNITS TOTAL WEIGHT
12341234
08 No Heat 51 55 47 52 55 51 52 47 205
With Heat 52 61 62 71 61 52 71 62 246
12 No Heat 64 72 56 64 72 64 64 56 256
With Heat 65 79 71 85 79 65 85 71 300
16 No Heat 80 87 69 76 87 80 76 69 312
With Heat 81 94 84 97 94 81 97 84 356
20 No Heat 90 98 74 82 98 90 82 74 344
With Heat 92 105 90 103 105 92 103 90 390
30 No Heat 118 127 92 100 127 118 100 92 437
With Heat 120 134 108 122 134 120 122 108 484
40 No Heat 155 162 114 122 162 155 122 114 553
With Heat 157 169 131 143 169 157 143 131 600

8
This section provides capacity tables for the 42BHC unit.
Capacity tables are based on nominal cfm. Correction
factors are provided for other operating conditions as
explained in the following selection example.
For applications outside the range provided in this
catalog, please consult the factory.
FORMULAS:
TC = TCb x Ct x Et
SC = SCb x Cs x Es
Where:
Cs = Sensible Airflow Correction Factor
Ct = Total Airflow Correction Factor
Es = Sensible Elevation Correction Factor
Et = Total Elevation Correction Factor
SC = Sensible Capacity
SCb = Base Sensible Capacity from Base Cooling Capaci-
ties by gpm charts
TC = Total Capacity
TCb = Base Total Capacity from Base Cooling Capacities
by gpm charts
EXAMPLE:
I Rate unit performance.
To rate the performance at sea level for an 42BHC16
unit with a four-row coil at 80 F/67 F EAT, 45 F EWT,
7 gpm water flow, and 1500 cfm:
a) Enter the Base Cooling Capacities by Gpm, 4-Row
Capacity Units table on 80 F/67 F EAT and
45 F EWT.
b) Locate the appropriate row for unit size 16 and
7 gpm.
Record the tabulated base performance.
TCb = 43.8 MBtuh
SCb = 34.9 MBtuh
∆T = 12.5 F
c) Divide CFM Actual by CFM Nominal to determine
Cfm Ratio.
Cfm Ratio = 1500/1600 =.9375
II Select CFM correction factors.
Select the Cfm correction factors, Ct and Cs, from the
Air Flow Correction Factors table. (Interpolation may
be required.)
Ct = .9625
Cs = .96
Select the elevation correction factors, Et and Es, from
the Elevation Correction Factors table. (No correction
necessary in this example, unit is at sea level.)
Et = 1.00
Es = 1.00
III Calculate actual performance.
TC = TCb x Ct x Et
= 43.8 x .9625 x 1.00
= 42.16 MBtuh
SC = SCb x Cs x Es
= 34.9 x .96 x 1.00
= 33.50 MBtuh
a) Calculate water pressure drop (or refer to the Water
Pressure Drop for Cv Factor and Water Flow Rate
table on page 18). From the Cv Factor by Coil and
Unit Size table on page 17, find the Cv value for
unit size 16 with four rows.
Cv = 7.2
P = [GPM/(0.658 x Cv)]2
= [7.0/(0.658 x 7.2)]2
= 2.18 feet of H2O
b) For selections other than those listed here, please
contact the factory.
IV Determine motor and drive.
To determine motor and drive selection requirements
and obtain the cfm for a specific application, the
total static pressure (TSP) for that application must be
determined.
The TSP is the sum of the internal static pressure (ISP)
and the external static pressure (ESP) measured in
inches of water column. ISP is sum of the static resis-
tance of the components of the unit — the cabinet,
coil and filter. ESP is the static resistance of the exter-
nal components of the unit, including, but not limited
to, duct work, grilles and additional filtration. For non-
ducted applications, the ESP is 0 in. wg.
After the TSP has been calculated (see the following
example), use the motor horsepower table to deter-
mine the actual horsepower (HP) for your Belt Drive
unit. Horsepower offerings are limited to 1/4, 1/3, 1/2,
3/4, 1, 11/2, 2 and 3.
The standard selection is the nearest offering above the
actual HP shown in the table.
Using the TSP of the table, match the unit size with the
cfm row to determine the correct motor for your spe-
cific application. Drive sheaves and the required belt
assembly will be provided to meet your design require-
ments. Drive sheaves are set at the factory.
Calculate the HP and drive selection required to deliver
1500 cfm on a 42BHC16 unit equipped with a
4-row hydronic cooling coil and a 2-in. pleated filter in
a ducted application at .38 in. ESP, including duct and
grille losses.
Using the Component Static Resistance table on
page 17, the ISP is calculated as follows:
Cabinet .09-in. wg
4-row Wet Coil .30-in. wg
2-in. Filter .12-in. wg
ISP .51-in. wg
ESP .38-in. wg
TSP .89-in. wg
Selection procedure

9
42BHC AIRFLOW CORRECTION FACTORS
NOTE: Use Sensible Heat correction factors when calculating heating
capacity.
DIRECT EXPANSION (DX) CORRECTION FACTORS
Consult factory for values outside of table.
DX Total Capacity (MBtuh) = Base Et x Total Correction Factor
DX Sensible Capacity (MBtuh) = Base Es x Sensible Correction Factor
% of Nominal Cfm = Actual Cfm (from Fan Performance table)
÷Nominal Cfm
ALTITUDE COOLING CORRECTION FACTORS
42BHC HOT WATER CAPACITY CORRECTION FACTORS
NOTES:
1. Leaving air temperature not to exceed 104 F with standard motor.
2. Base capacity ratings based on 180 F entering water temperature
and 70 F entering air temperature.
3. Hot Water Heating Capacity (MBtuh) = Rated Heating Capacity x
Hot Water Capacity Correction Factor x Sensible Airflow Correc-
tion Factor.
CFM RATIO
(Actual/Base) TOTAL (Ct) SENSIBLE (Cs)
1.40 1.25 1.26
1.35 1.22 1.23
1.30 1.19 1.20
1.25 1.16 1.17
1.20 1.13 1.14
1.15 1.10 1.11
1.10 1.07 1.08
1.05 1.04 1.04
1.00 1.00 1.00
0.95 0.97 0.97
0.90 0.94 0.93
0.85 0.90 0.89
0.80 0.86 0.85
0.75 0.82 0.81
0.70 0.78 0.77
0.65 0.74 0.72
0.60 0.70 0.67
0.55 0.66 0.62
0.50 0.62 0.57
0.45 0.58 0.52
0.40 0.53 0.47
0.35 0.48 0.42
0.30 0.43 0.38
0.25 0.38 0.33
% OF
NOMINAL CFM
CORRECTION FACTOR
Total Sensible
80 0.95 0.93
90 0.97 0.96
100 1.00 1.00
110 1.02 1.04
120 1.05 1.08
ELEVATION (ft) TOTAL HEAT (Et) SENSIBLE HEAT (Es)
1000 0.99 0.96
2000 0.98 0.93
3000 0.97 0.89
4000 0.96 0.86
5000 0.94 0.83
6000 0.93 0.80
7000 0.92 0.77
8000 0.91 0.75
9000 0.90 0.73
ENTERING AIR
TEMPERATURE (F)
ENTERING WATER TEMPERATURE (F)
100 110 120 130 140 150 160 170 180 190 200
50 0.455 0.545 0.636 0.727 0.818 0.909 1.000 1.091 1.182 1.273 1.364
55 0.409 0.500 0.591 0.682 0.773 0.864 0.955 1.045 1.136 1.227 1.318
60 0.363 0.455 0.545 0.636 0.727 0.818 0.909 1.000 1.091 1.182 1.273
65 0.318 0.409 0.500 0.591 0.682 0.773 0.864 0.955 1.045 1.136 1.227
70 0.272 0.363 0.455 0.545 0.636 0.727 0.818 0.909 1.000 1.091 1.182
75 0.227 0.318 0.409 0.500 0.591 0.682 0.773 0.864 0.955 1.045 1.136
80 0.182 0.272 0.363 0.455 0.545 0.636 0.727 0.818 0.909 1.000 1.091
Performance data

10
42BHC NOMINAL COOLING CAPACITIES
LEGEND
*Based on entering air temperature of 67 F wb, 80 F db and temperature rise of 10 degrees F.
NOTE: All ratings at sea level. Ratings in accordance with ARI (Air Conditioning & Refrigeration Institute).
42BHC NOMINAL HEATING CAPACITIES
NOTES:
1. Ratings are based on 180 F Entering Water Temperature (EWT) and 70 F
Entering Air Temperature (EAT).
2. Leaving-air temperature is not to exceed 104 F (40 C) with the standard
motor. Consult the factory for higher temperature motor applications.
3. For information on four and six-row heating coil capacities and applications,
consult the factory.
4. For all application ratings, use the quick-selection ratings provided in this
catalog, or contact the factory.
UNIT SIZE
42BHC NOMINAL CFM COIL ROWS EWT (F)
COOLING*
Total Capacity (MBtuh) Sensible Capacity (MBtuh)
08 800
440 29.9 20.9
45 23.2 18.1
50 17.7 15.5
6
40 40.7 26.2
45 32.2 22.6
50 24.4 19.3
8
40 46.8 29.3
45 38.0 25.3
50 29.1 21.5
12 1200
4
40 47.8 32.5
45 37.7 28.2
50 28.8 24.4
6
40 62.5 40.0
45 50.2 34.6
50 38.2 29.6
8
40 71.5 44.5
45 58.2 38.4
50 44.7 32.7
16 1600
4
40 63.2 43.1
45 49.4 37.3
50 37.9 32.3
6
40 83.2 53.3
45 66.9 46.1
50 51.1 39.5
8
40 95.5 59.5
45 77.7 51.3
50 60.1 43.8
20 2000
4
40 79.8 54.1
45 63.0 47.1
50 48.4 40.8
6
40 104.3 66.7
45 84.1 57.8
50 64.3 49.6
8
40 119.4 74.4
45 97.5 64.2
50 75.4 54.8
30 3000
4
40 119.7 81.5
45 93.9 70.7
50 72.2 61.2
6
40 157.5 100.7
45 126.9 87.2
50 97.1 74.8
8
40 180.4 112.2
45 147.3 96.9
50 114.1 82.7
40 4000
4
40 166.9 111.9
45 132.7 97.4
50 102.1 84.3
6
40 202.5 129.6
45 160.8 111.8
50 122.7 96.7
8
40 245.0 151.8
45 200.9 131.2
50 156.0 111.9
EWT — Entering Water Temperature
UNIT SIZE
42BHC NOMINAL CFM ROWS HEATING CAPACITY (MBtuh)
08 800 1 27.0
2 46.9
12 1200 1 38.5
2 68.5
16 1600 1 48.0
2 87.7
20 2000 1 58.7
2 104.9
30 3000 1 78.0
2 149.2
40 4000 1 92.3
2 182.4
Performance data (cont)

11
42BHC 4-ROW COOLING CAPACITY (by Gpm)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
42BHC 6-ROW COOLING CAPACITY (by Gpm)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
UNIT
SIZE
42BHC
GPM
75 F DB/ 63 F WB 80 F DB/67 F WB 85 F DB/71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
∆TTC
bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb
08
2 15.9 15.9 14.3 13.8 13.8 12.8 11.0 11.0 11.0 18.4 18.4 15.7 16.3 16.3 14.5 14.2 14.2 13.0 21.1 21.1 17.0 18.9 18.9 16.0 16.8 16.8 14.8
3 12.7 19.1 16.2 10.9 16.3 14.7 9.2 13.8 12.9 15.0 22.5 17.7 13.0 19.5 16.4 11.2 16.7 15.0 17.4 26.1 19.1 15.3 23.0 17.9 13.3 20.0 16.6
4 10.7 21.5 17.4 9.0 18.0 15.7 7.5 14.9 13.9 12.8 25.6 19.0 11.0 21.9 17.5 9.2 18.4 16.0 15.0 30.0 20.6 13.1 26.2 19.2 11.2 22.4 17.7
5 9.3 23.3 18.2 7.7 19.4 16.4 6.3 15.7 14.6 11.2 28.0 20.1 9.5 23.8 18.3 7.9 19.7 16.6 13.2 33.1 21.8 11.5 28.7 20.1 9.7 24.3 18.5
6 8.3 24.8 18.9 6.8 20.4 16.9 5.4 16.3 15.0 10.0 30.0 20.9 8.4 25.3 19.0 6.9 20.7 17.1 11.8 35.5 22.8 10.2 30.7 20.9 8.6 25.8 19.1
12
3 17.3 26.0 22.5 15.0 22.6 20.4 11.8 17.7 17.7 20.2 30.2 24.7 17.8 26.7 22.9 15.5 23.2 20.8 23.2 34.7 26.6 20.7 31.0 25.0 18.3 27.4 23.2
4 14.7 29.5 24.5 12.6 25.2 22.3 10.6 21.2 19.6 17.3 34.7 26.8 15.1 30.1 24.8 12.9 25.8 22.6 20.2 40.3 29.0 17.7 35.5 27.1 15.4 30.8 25.1
5 12.9 32.2 25.9 10.9 27.2 23.5 9.0 22.6 20.8 15.3 38.3 28.4 13.1 32.9 26.2 11.1 27.7 23.8 17.9 44.8 30.8 15.6 39.1 28.6 13.4 33.5 26.4
6 11.5 34.4 27.0 9.6 28.7 24.4 7.8 23.5 21.6 13.7 41.2 29.7 11.7 35.1 27.1 9.7 29.1 24.6 16.2 48.5 32.2 14.0 42.1 29.7 11.9 35.6 27.3
16
5 14.9 37.3 31.7 12.9 32.3 28.8 10.0 25.0 25.0 17.5 43.7 34.6 15.3 38.3 32.2 13.3 33.2 29.3 20.2 50.6 37.4 17.9 44.9 35.1 15.7 39.4 32.7
7 12.3 42.9 34.6 10.4 36.3 31.4 8.6 30.2 27.7 14.6 51.0 37.9 12.5 43.8 34.9 10.6 37.0 31.8 17.1 59.7 41.0 14.9 52.2 38.1 12.8 44.8 35.3
9 10.4 47.0 36.5 8.7 39.1 32.9 7.1 31.9 29.2 12.5 56.4 40.2 10.7 48.0 36.7 8.8 39.7 33.3 14.8 66.4 43.7 12.8 57.7 40.3 10.8 48.8 36.9
11 9.1 50.1 37.9 7.5 41.2 34.0 6.0 33.0 30.0 11.0 60.4 42.0 9.3 51.0 38.0 7.6 41.7 34.2 13.0 71.5 45.7 11.2 61.6 41.8 9.4 51.8 38.1
20
5 17.6 43.9 37.8 15.3 38.2 34.2 11.8 29.5 29.5 20.4 51.1 41.4 18.1 45.1 38.4 15.7 39.4 34.8 23.5 58.7 44.6 21.0 52.5 42.0 18.6 46.5 39.0
7 14.5 50.7 41.6 12.4 43.2 37.8 10.4 36.3 33.3 17.1 59.8 45.5 14.8 51.8 42.0 12.7 44.3 38.3 19.9 69.6 49.2 17.5 61.1 45.9 15.1 52.9 42.5
9 12.4 55.7 44.1 10.4 46.7 39.9 8.6 38.6 35.3 14.8 66.4 48.4 12.6 56.8 44.4 10.6 47.5 40.3 17.3 77.9 52.5 15.1 67.8 48.6 12.8 57.6 44.7
11 10.8 59.6 45.9 9.0 49.3 41.3 7.3 40.0 36.5 13.0 71.6 50.6 11.0 60.5 46.0 9.1 50.0 41.6 15.3 84.3 55.0 13.2 72.7 50.5 11.2 61.4 46.2
30
7 17.7 61.8 54.4 15.4 54.0 49.0 11.9 41.8 41.8 20.5 71.7 59.9 18.2 63.8 55.4 16.0 55.8 49.9 23.5 82.1 64.7 21.1 73.9 60.9 18.8 65.9 56.4
9 15.5 69.6 59.2 13.4 60.3 53.8 10.3 46.5 46.5 18.1 81.5 64.9 15.9 71.6 60.2 13.8 62.1 54.7 20.9 94.1 70.0 18.6 83.7 65.7 16.4 73.6 61.1
11 13.8 76.0 62.7 11.8 65.0 57.0 9.9 54.6 50.1 16.3 89.7 68.6 14.1 77.8 63.4 12.1 66.6 57.8 19.0 104.4 74.1 16.7 91.8 69.2 14.5 79.6 64.2
14 11.9 83.4 66.3 10.0 70.2 60.1 8.3 58.1 53.1 14.2 99.4 72.8 12.2 85.2 66.9 10.2 71.6 60.8 16.7 116.6 78.9 14.5 101.7 73.2 12.4 87.0 67.5
17 10.5 89.3 69.1 8.7 74.2 62.2 7.1 60.4 55.0 12.6 107.1 76.1 10.7 91.2 69.5 8.9 75.3 62.8 14.9 126.3 82.7 12.9 109.7 76.3 10.9 92.5 69.8
40
11 17.5 96.3 80.5 15.2 83.3 73.0 12.9 70.8 63.9 20.5 112.5 88.0 18.0 98.7 81.4 15.6 85.7 74.0 23.6 129.7 94.8 20.9 115.2 88.8 18.4 101.3 82.4
14 15.1 106.0 85.7 12.9 90.4 77.8 10.9 76.0 68.6 17.9 125.2 93.9 15.5 108.3 86.5 13.2 92.6 78.8 20.8 145.6 101.4 18.3 127.9 94.4 15.8 110.7 87.4
17 13.4 113.9 89.6 11.3 95.8 81.0 9.3 79.3 71.6 15.9 135.5 98.4 13.7 116.2 90.2 11.5 97.3 81.8 18.7 158.7 106.6 16.3 138.4 98.6 13.8 117.7 90.6
21 11.6 122.3 93.6 9.7 101.8 84.3 7.9 82.5 74.3 13.9 146.4 103.1 11.9 124.8 94.0 9.8 102.8 84.7 16.4 172.1 111.9 14.3 149.7 103.1 12.0 126.1 94.1
25 10.3 129.1 96.7 8.5 105.8 86.2 6.8 84.4 75.9 12.4 155.3 106.9 10.5 130.7 96.5 8.5 106.6 86.6 14.7 183.3 116.3 12.6 157.7 106.2 10.6 132.0 96.5
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)
UNIT
SIZE
42BHC
GPM
75 F DB/ 63 F WB 80 F DB/67 F WB 85 F DB/71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
∆TTC
bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb∆TTC bSCb
08
3 16.0 24.1 19.1 13.6 20.5 17.4 10.4 15.6 15.6 19.0 28.5 20.9 16.4 24.6 19.3 14.0 21.0 17.8 22.2 33.3 22.6 19.5 29.2 21.1 16.8 25.2 19.5
4 13.5 27.0 20.5 11.3 22.6 18.5 9.3 18.7 16.6 16.2 32.3 22.6 13.8 27.6 20.6 11.5 23.1 18.7 19.1 38.2 24.6 16.5 33.1 22.6 14.1 28.2 20.7
5 11.7 29.2 21.5 9.7 24.2 19.3 7.8 19.5 17.1 14.1 35.3 23.8 11.9 29.8 21.5 9.8 24.6 19.4 16.7 41.8 26.0 14.5 36.2 23.8 12.2 30.5 21.6
6 10.3 30.9 22.3 8.5 25.4 19.8 6.7 20.1 17.5 12.5 37.5 24.8 10.5 31.6 22.3 8.6 25.8 19.9 14.9 44.6 27.2 12.9 38.6 24.7 10.7 32.2 22.3
12 6 14.3 42.8 31.7 11.8 35.5 28.5 9.7 29.0 25.4 17.2 51.5 35.1 14.5 43.6 31.8 12.0 36.1 28.7 —— ——— ——— —
8 11.7 46.8 33.6 9.5 38.2 29.7 7.6 30.3 26.2 14.2 56.7 37.4 11.9 47.5 33.5 9.6 38.6 29.8 20.3 60.9 38.2 17.6 52.7 35.0 14.8 44.3 31.8
10 9.9 49.3 34.8 8.0 39.9 30.5 6.2 31.2 26.7 12.0 59.8 38.8 10.0 50.1 34.6 8.1 40.3 30.5 14.2 71.1 42.5 12.2 61.2 38.4 10.2 50.9 34.4
16
7 15.4 53.8 40.8 13.0 45.3 37.0 10.8 37.9 33.2 18.4 64.3 45.0 15.7 55.0 41.0 13.3 46.4 37.4 21.6 75.7 48.8 18.8 65.7 44.9 16.1 56.3 41.3
9 13.0 58.7 43.2 10.8 48.7 38.6 8.8 39.7 34.4 15.7 70.8 47.8 13.3 60.0 43.2 11.0 49.5 38.8 18.6 83.8 52.1 16.1 72.6 47.6 13.6 61.0 43.2
11 11.4 62.5 44.9 9.3 51.1 39.8 7.4 40.8 35.1 13.7 75.6 49.9 11.6 63.5 44.7 9.4 51.9 39.9 16.3 89.6 54.5 14.0 77.2 49.4 11.7 64.6 44.6
13 10.1 65.3 46.2 8.2 53.1 40.7 6.4 41.7 35.6 12.2 79.2 51.5 10.2 66.5 45.9 8.2 53.6 40.6 14.5 94.0 56.4 12.5 81.0 50.9 10.4 67.4 45.7
20
7 18.1 63.3 49.1 15.4 53.9 44.7 11.4 39.8 39.8 18.0 63.0 63.0 15.9 55.5 55.5 13.7 47.9 47.9 25.2 88.0 58.3 21.9 76.8 53.9 18.9 66.2 49.9
9 15.4 69.5 52.1 12.9 58.1 46.9 10.7 48.3 42.1 14.9 67.0 67.0 13.1 59.0 59.0 11.3 50.8 50.8 21.9 98.4 62.4 18.9 85.1 57.3 16.0 71.9 52.2
11 13.5 74.3 54.3 11.1 61.2 48.4 9.0 49.7 43.1 12.7 69.6 69.6 11.1 61.1 61.1 9.6 52.6 52.6 19.2 105.8 65.5 16.6 91.5 59.8 13.9 76.7 54.0
13 12.0 78.1 56.1 9.8 63.7 49.5 7.8 50.8 43.8 11.0 71.4 71.4 9.6 62.6 62.6 8.3 53.8 53.8 17.2 111.7 67.9 14.8 96.1 61.6 12.3 80.1 55.4
15 10.8 80.7 57.3 8.7 65.6 50.4 6.9 51.6 44.2 9.7 72.6 72.6 8.5 63.6 63.6 7.3 54.6 54.6 15.5 115.9 69.7 13.3 99.8 63.0 11.1 83.1 56.6
30
11 17.4 95.7 74.2 14.8 81.6 67.6 12.5 69.1 60.5 20.6 113.5 81.3 17.8 98.1 74.8 15.2 83.8 68.6 24.2 133.0 88.1 21.1 116.2 81.6 18.3 100.4 75.5
14 15.0 104.7 78.5 12.5 87.8 70.8 10.4 73.1 63.6 17.9 125.6 86.6 15.3 107.1 78.7 12.8 89.8 71.6 21.1 148.0 94.1 18.4 128.5 86.4 15.6 109.3 79.1
17 13.2 111.8 81.8 10.9 92.7 73.1 8.9 75.4 65.1 15.9 134.9 90.6 13.4 114.1 81.7 11.1 94.1 73.5 18.8 159.5 98.7 16.3 138.2 90.2 13.6 115.9 81.6
21 11.3 119.0 85.2 9.3 97.2 75.2 7.4 77.5 66.3 13.7 144.0 94.5 11.6 121.5 84.9 9.4 98.7 75.5 16.2 170.5 103.3 14.1 147.6 93.9 11.7 123.1 84.4
40 17 16.7 141.6 105.5 14.0 118.9 95.1 11.7 99.3 85.5 20.0 169.6 116.4 17.0 144.4 105.6 14.2 121.0 95.8 23.5 199.6 126.3 20.3 172.6 115.7 17.2 146.3 105.6
21 14.5 151.8 110.4 12.0 126.0 98.5 9.8 102.5 87.6 17.4 182.5 121.9 14.7 154.6 109.9 12.2 127.6 98.8 20.6 216.6 133.3 17.8 186.7 121.2 14.9 156.7 109.6
25 12.8 159.8 114.1 10.4 130.6 100.7 8.3 104.3 88.8 15.4 192.9 126.5 13.0 162.2 113.3 10.6 132.2 100.8 18.2 228.1 138.1 15.7 196.6 125.1 13.1 164.1 112.6
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)

12
42BHC 8-ROW COOLING CAPACITY (by Gpm)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
42BHC 4-ROW COOLING CAPACITY (by ∆T)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
UNIT
SIZE
42BHC
GPM
75 F DB / 63 F WB 80 F DB / 67 F WB 85 F DB / 71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb∆
∆∆
∆TTC
bSCb
08
4 15.4 30.8 22.5 13.0 25.9 20.2 10.8 21.5 18.2 18.4 36.8 24.7 15.8 31.5 22.5 13.2 26.4 20.4 21.7 43.4 26.9 18.9 37.7 24.6 16.1 32.2 22.5
5 13.3 33.2 23.6 11.0 27.5 21.0 9.0 22.4 18.7 16.0 40.0 26.2 13.6 34.0 23.5 11.2 28.1 21.1 19.0 47.4 28.6 16.4 41.1 26.0 13.9 34.7 23.5
6 11.7 35.0 24.5 9.6 28.8 21.6 7.7 23.0 19.0 14.1 42.4 27.3 11.9 35.8 24.3 9.8 29.3 21.6 16.8 50.4 29.9 14.5 43.6 27.0 12.2 36.5 24.2
7 10.4 36.5 25.1 8.5 29.8 22.0 6.7 23.4 19.2 12.6 44.2 28.1 10.7 37.3 25.0 8.6 30.2 22.0 15.0 52.6 30.9 13.0 45.5 27.8 10.8 37.8 24.7
8 9.4 37.5 25.7 7.6 30.5 22.3 5.9 23.7 19.3 11.4 45.6 28.7 9.6 38.3 25.4 7.7 30.9 22.3 13.6 54.3 31.6 11.7 46.8 28.3 9.8 39.0 25.2
12
7 14.5 50.7 35.8 12.0 42.0 31.8 9.7 34.1 28.3 17.5 61.2 39.7 14.7 51.6 35.5 12.2 42.6 31.8 20.6 72.2 43.3 17.8 62.2 39.2 15.0 52.4 35.3
9 12.0 54.2 37.5 9.8 44.3 32.8 7.8 35.0 28.7 14.6 65.5 41.7 12.2 55.1 37.1 10.0 44.8 32.7 17.3 77.7 45.8 14.9 67.0 41.1 12.4 55.9 36.7
11 10.3 56.4 38.5 8.3 45.8 33.6 6.5 35.7 29.1 12.4 68.4 43.1 10.5 57.5 38.1 8.4 46.4 33.4 14.8 81.3 47.4 12.8 70.2 42.5 10.7 58.6 37.7
13 8.9 57.9 39.3 7.2 47.0 34.1 5.6 36.3 29.4 10.8 70.5 44.0 9.1 59.3 38.9 7.3 47.6 33.9 12.9 84.0 48.6 11.2 72.5 43.5 9.3 60.5 38.5
16
9 14.8 66.6 47.3 12.4 55.6 42.2 10.2 45.7 37.7 17.8 80.1 52.3 15.1 68.1 47.1 12.6 56.5 42.3 21.0 94.5 57.1 18.2 81.9 51.8 15.4 69.2 46.8
11 12.8 70.6 49.2 10.6 58.1 43.4 8.5 46.8 38.3 15.5 85.3 54.7 13.1 71.9 48.7 10.7 59.1 43.3 18.3 100.9 59.8 15.9 87.4 54.1 13.3 73.3 48.4
13 11.3 73.6 50.6 9.2 60.1 44.3 7.3 47.5 38.7 13.7 89.1 56.4 11.5 75.0 50.1 9.4 61.0 44.1 16.3 105.7 61.9 14.0 91.2 55.7 11.7 76.2 49.6
15 10.1 75.6 51.6 8.2 61.6 45.0 6.4 48.1 39.0 12.2 91.7 57.7 10.3 77.2 51.0 8.3 62.4 44.7 14.5 109.0 63.5 12.6 94.2 56.9 10.5 78.6 50.6
20
10 16.3 81.5 58.2 13.6 68.2 52.1 11.3 56.6 46.8 19.5 97.6 64.3 16.6 82.9 57.9 13.8 69.2 52.2 23.0 114.9 69.9 19.8 99.1 63.5 16.8 84.1 57.6
12 14.4 86.2 60.5 11.9 71.2 53.5 9.6 57.7 47.4 17.3 103.8 67.0 14.6 87.6 59.9 12.0 72.1 53.4 20.4 122.5 73.2 17.6 105.7 66.1 14.8 88.8 59.4
14 12.8 89.5 62.0 10.5 73.4 54.5 8.4 58.6 47.9 15.4 108.1 69.0 13.0 91.0 61.4 10.6 74.3 54.4 18.3 127.9 75.5 15.8 110.4 68.0 13.2 92.4 60.8
16 11.5 92.1 63.3 9.4 75.1 55.3 7.4 59.3 48.3 13.9 111.4 70.6 11.7 93.8 62.6 9.5 76.1 55.1 16.5 132.1 77.5 14.3 114.1 69.6 11.9 95.3 62.0
30
13 17.9 116.2 84.5 15.2 98.6 76.3 13.0 84.3 69.6 21.2 137.9 92.7 18.3 118.7 84.5 15.5 100.9 77.1 24.9 161.7 100.5 21.7 140.9 92.2 18.6 121.2 84.6
16 15.6 124.5 88.5 13.0 104.2 79.1 10.8 86.5 71.0 18.7 149.3 97.8 15.9 127.2 88.1 13.3 106.2 79.4 22.0 175.9 106.5 19.1 152.6 96.9 16.2 129.3 87.7
19 13.8 131.1 91.6 11.4 108.5 81.1 9.2 87.8 71.8 16.6 158.0 101.7 14.1 133.5 90.8 11.6 109.9 80.9 19.6 186.6 111.1 17.0 161.2 100.3 14.3 136.0 90.3
22 12.4 136.0 94.0 10.2 111.9 82.7 8.1 89.3 72.6 15.0 164.8 104.8 12.6 138.9 93.2 10.3 113.4 82.4 17.7 195.1 114.8 15.3 168.4 103.3 12.8 141.0 92.3
25 11.2 140.1 95.9 9.1 114.3 83.8 7.2 90.1 73.0 13.6 169.5 107.0 11.4 142.8 94.9 9.3 115.9 83.5 16.1 201.0 117.5 13.9 173.6 105.5 11.6 145.1 93.9
40
19 17.4 165.7 117.8 14.6 138.9 105.4 12.3 116.9 95.2 20.8 197.5 129.7 17.7 168.0 116.8 14.9 141.9 105.9 24.4 231.6 140.7 21.1 200.1 127.7 18.0 171.3 116.5
22 15.8 173.7 121.7 13.1 144.2 107.9 10.8 118.8 96.4 18.9 208.3 134.5 16.0 176.3 120.3 13.3 146.2 107.8 22.3 245.1 146.5 19.2 211.6 132.5 16.2 178.6 119.4
25 14.4 179.6 124.4 11.8 148.0 109.7 9.6 119.9 97.0 17.3 216.0 138.0 14.6 182.2 122.9 12.0 150.0 109.3 20.4 254.9 150.8 17.6 220.1 135.9 14.8 184.9 121.8
28 13.2 184.3 126.7 10.8 151.1 111.1 8.6 120.9 97.6 15.9 222.2 140.9 13.4 187.9 125.2 10.9 153.2 110.7 18.8 262.8 154.3 16.2 226.7 138.8 13.6 190.1 123.8
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)
UNIT
SIZE
42BHC
∆T
75 F DB/ 63 F WB 80 F DB/67 F WB 85 F DB/71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
GPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCb
08
10 4.5 22.4 17.8 3.4 17.1 15.2 2.5 12.5 12.0 6.0 29.9 20.9 4.6 23.2 18.1 3.5 17.7 15.5 7.7 38.5 24.0 6.2 31.0 21.0 4.8 23.9 18.3
12 3.3 20.0 16.6 2.6 15.4 14.0 ——— 4.5 26.8 19.6 3.5 20.7 16.9 2.7 16.0 14.4 5.9 35.1 22.6 4.7 27.9 19.8 3.6 21.5 17.3
14 2.5 17.8 15.4 ——————3.4 23.9 18.3 2.7 18.6 15.8 2.1 14.4 13.2 4.5 31.7 21.3 3.6 24.9 18.7 2.8 19.3 16.3
16 — — — ——————2.7 21.3 17.1 2.1 16.6 14.7 ———3.6 28.4 20.0 2.8 22.3 17.5 2.2 17.5 15.2
18 — — — ——————2.1 18.9 15.9 ——————2.8 25.3 18.8 2.2 19.9 16.5 ———
12
10 7.4 36.9 28.1 5.6 28.2 24.1 4.4 21.8 20.0 9.6 47.8 32.5 7.5 37.7 28.2 5.8 28.8 24.4 12.0 59.0 36.8 9.8 49.0 32.4 7.6 38.2 28.3
12 5.6 33.6 26.6 4.3 25.9 22.7 2.9 17.4 17.4 7.4 44.4 31.0 5.8 34.6 26.9 4.5 26.7 23.2 9.4 56.4 35.4 7.6 45.6 31.1 5.9 35.4 27.2
16 4.4 30.5 25.1 3.4 23.7 21.2 2.2 15.0 15.0 5.8 40.7 29.5 4.5 31.6 25.6 3.5 24.7 21.8 7.5 52.7 33.9 6.0 42.1 29.8 4.7 32.7 26.0
16 3.5 27.7 23.5 2.5 20.1 18.9 ——— 4.6 37.0 27.9 3.6 24.2 29.1 2.7 21.8 19.9 6.1 48.8 32.3 4.8 38.5 28.3 3.8 30.1 24.7
18 2.8 25.1 21.9 ——————3.7 33.7 26.3 2.9 26.4 22.7 ———5.0 44.6 30.7 3.9 35.1 26.9 3.1 27.7 23.4
16
10 9.6 48.0 37.0 7.4 36.9 31.7 5.0 25.1 25.1 12.6 63.2 43.1 9.9 49.4 37.3 7.6 37.9 32.3 15.9 79.3 48.9 13.0 64.8 43.1 10.1 50.5 37.6
12 7.3 43.5 34.8 5.6 33.6 29.7 3.6 21.7 21.7 9.6 57.8 40.8 7.5 45.0 35.4 5.8 35.0 30.5 12.4 74.5 38.7 10.0 59.7 41.1 7.7 46.4 35.9
14 5.6 39.2 32.7 4.1 28.6 26.6 ——— 7.5 52.5 38.6 5.9 40.9 33.5 4.4 30.6 27.8 9.8 68.6 31.6 7.8 54.6 39.1 6.1 42.5 34.2
16 4.4 35.2 30.3 ——————5.9 47.4 36.3 4.6 37.1 31.4 ———7.9 62.8 42.2 6.2 49.6 37.1 4.8 38.0 32.4
18 3.5 31.2 27.7 ——————4.7 42.5 34.0 3.7 33.4 29.0 ———6.3 57.0 40.0 5.0 44.8 35.0 3.9 34.9 30.1
20
10 12.4 61.9 47.0 9.5 47.4 40.2 7.6 38.2 34.3 16.0 79.8 54.1 12.6 63.0 47.1 9.7 48.4 40.8 19.9 99.7 61.2 16.3 81.7 54.0 12.8 64.0 47.2
12 9.4 56.6 44.5 7.3 43.9 38.2 4.9 29.2 29.2 12.4 74.6 51.9 9.7 58.2 45.0 7.6 45.3 38.9 15.7 94.2 59.0 12.7 76.3 51.9 9.9 59.5 45.4
16 7.4 51.8 42.2 5.8 40.4 35.8 3.6 25.1 25.1 9.8 68.6 49.4 7.7 53.6 42.9 6.0 42.1 36.8 12.7 88.6 56.7 10.1 70.6 49.7 7.9 55.2 43.6
16 5.9 47.3 39.7 4.4 35.2 32.3 ——— 7.9 62.9 46.9 6.2 49.3 40.7 4.8 38.2 34.1 10.3 82.2 54.1 8.2 65.3 47.5 6.4 51.3 41.6
18 4.8 42.9 37.1 ——————6.4 57.4 44.4 5.0 45.3 38.4 3.2 28.8 28.3 8.4 75.7 51.6 6.7 59.8 45.3 5.3 47.6 39.6
30
10 18.3 91.5 70.1 14.1 70.2 60.1 10.7 53.3 49.5 23.9 119.7 81.5 18.8 93.9 70.7 14.4 72.2 61.2 30.0 150.1 92.3 24.6 122.9 81.4 19.2 96.0 71.1
12 13.9 83.1 66.2 10.7 64.4 56.6 ———18.3 110.1 77.4 14.3 85.9 67.2 11.1 66.9 58.0 23.5 141.1 88.6 19.0 114.0 78.0 14.7 88.5 68.1
14 10.8 75.3 62.3 8.4 58.4 52.4 ———14.3 100.4 73.3 11.2 78.4 63.7 8.8 61.5 54.3 18.7 130.8 84.5 14.9 104.3 74.2 11.6 81.3 65.0
16 8.5 67.7 558.1 ——————11.4 91.1 68.4 8.9 71.3 60.0 ———15.0 120.1 80.3 11.9 95.0 70.5 9.3 74.7 61.7
18 — — — ——————9.1 81.9 65.1 7.2 64.5 55.8 ———12.2 109.5 76.1 9.6 86.2 66.8 7.6 68.4 58.0
40 14 15.9 111.2 88.3 12.4 87.0 75.5 7.8 54.3 54.3 20.9 146.1 102.9 16.4 114.7 89.5 12.9 90.3 77.2 26.7 186.8 117.7 21.6 150.9 103.6 16.7 117.1 90.3
16 12.8 102.5 83.8 10.1 80.4 70.8 ———16.9 135.2 98.3 13.3 106.3 85.4 10.5 84.3 73.0 21.8 174.6 112.9 17.5 139.9 99.2 13.8 110.0 87.0
18 10.5 94.2 79.2 8.1 72.8 65.0 ———13.8 124.6 93.6 11.0 98.5 81.3 8.6 77.6 67.9 18.1 162.6 108.1 14.4 129.3 95.0 11.4 102.8 83.2
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)
Performance data (cont)

13
42BHC 6-ROW COOLING CAPACITY (by ∆T)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
42BHC 8-ROW COOLING CAPACITY (by ∆
∆∆
∆T)
LEGEND NOTE: All capacities are given in thousands of Btuh (MBtuh).
UNIT
SIZE
42BHC
∆T
75 F DB/63 F WB 80 F DB/67 F WB 85 F DB/71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
GPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCb
08
10 6.3 31.3 22.5 4.8 23.8 19.1 3.4 16.7 16.0 8.1 40.7 26.2 6.5 32.2 22.6 4.9 24.4 19.3 10.1 50.4 29.7 8.4 41.9 26.1 6.6 33.0 22.6
12 4.8 28.8 21.3 3.7 21.9 18.2 2.4 14.4 14.4 6.4 38.2 25.1 5.0 29.8 21.5 3.8 22.7 18.5 8.1 48.3 28.8 6.6 39.6 25.1 5.1 30.7 21.7
14 3.8 26.4 20.2 2.6 20.2 17.3 ———5.1 35.5 23.9 3.9 27.3 20.5 3.0 21.1 17.8 6.5 45.7 27.7 5.3 36.9 24.1 4.0 28.3 20.8
16 3.0 24.1 19.1 2.3 18.5 16.2 ———4.1 32.6 22.7 3.1 25.1 19.5 2.4 19.5 16.8 5.4 42.9 20.4 4.2 33.9 22.9 3.3 26.1 19.9
18 2.5 22.0 18.1 —— ————3.3 29.9 21.5 2.6 23.0 18.6 ——— 4.4 39.9 25.2 3.5 31.1 21.8 2.7 24.1 19.0
12
10 9.8 49.1 34.7 7.5 37.6 29.5 5.8 28.9 25.3 12.5 62.5 40.0 10.0 50.2 34.6 7.6 38.2 29.6 ———12.9 64.6 39.8 10.2 51.1 34.5
12 7.7 46.3 33.4 5.9 35.4 28.4 3.9 23.3 23.3 10.0 59.8 38.8 7.9 47.3 33.4 6.0 36.1 28.7 12.4 74.3 43.9 10.3 61.6 38.5 8.0 48.1 33.3
14 6.2 43.2 31.9 4.7 33.1 27.3 3.1 21.4 21.4 8.1 56.9 37.5 6.4 44.4 32.1 4.9 34.2 27.8 10.2 71.4 42.7 8.4 58.4 37.3 6.5 45.3 32.2
16 5.0 40.1 30.5 3.9 30.8 26.1 2.4 19.0 19.0 6.7 53.5 36.0 5.2 41.4 30.8 4.0 32.2 26.8 8.5 68.3 41.4 6.9 55.2 36.0 5.3 42.6 31.1
18 4.1 37.2 29.1 3.2 28.7 24.8 ———5.6 50.0 34.5 4.3 38.6 29.6 3.4 30.1 25.5 7.2 65.0 40.0 5.8 51.8 34.7 4.4 39.9 30.0
16
10 13.1 65.4 46.3 10.0 50.0 39.3 7.7 38.7 33.7 16.7 83.2 53.3 13.4 66.9 46.1 10.2 51.1 39.5 20.6 102.8 60.3 17.2 85.9 53.0 13.6 68.1 45.9
12 10.2 61.0 44.2 7.8 46.9 37.7 5.1 30.7 30.4 13.3 79.5 51.6 10.4 62.6 44.3 8.0 48.1 38.2 16.5 98.9 58.5 13.7 81.9 51.3 10.7 64.1 44.4
14 8.1 56.7 42.2 6.3 43.7 36.2 3.9 27.1 27.1 10.7 75.0 49.6 8.4 58.6 42.6 6.5 45.4 36.9 13.6 94.9 56.8 11.0 77.3 49.4 8.6 60.2 42.8
16 6.6 52.5 40.2 5.1 40.7 34.5 ———8.8 70.2 47.5 6.8 54.4 40.8 5.3 42.7 35.5 11.3 90.3 54.8 9.1 72.9 47.7 7.1 56.4 41.4
18 5.4 48.4 38.3 3.6 32.5 30.5 ———7.3 65.2 45.3 5.6 50.5 39.1 3.9 35.1 31.8 9.5 85.4 52.7 7.5 67.8 45.7 5.9 52.8 39.9
20
10 13.1 65.4 46.3 10.0 50.0 39.3 7.7 38.7 33.7 16.7 83.2 53.3 13.4 66.9 46.1 10.2 51.1 39.5 20.6 102.8 60.3 17.2 85.9 53.0 13.6 68.1 45.9
12 10.2 61.0 44.2 7.8 59.7 37.7 5.1 30.7 30.4 13.3 79.5 51.6 10.4 62.6 44.3 8.0 48.1 38.2 16.5 98.9 58.5 13.7 81.9 51.3 10.7 64.1 44.4
14 8.1 56.7 42.2 6.3 43.7 36.2 3.9 27.1 27.1 10.7 75.0 49.6 8.4 58.6 42.6 6.5 45.4 36.9 13.6 94.9 56.8 11.0 77.3 49.4 8.6 60.2 42.8
16 6.6 52.5 40.2 5.1 40.7 34.5 ———8.8 70.2 47.5 6.8 54.4 40.8 5.3 42.7 35.5 11.3 90.3 54.8 9.1 72.9 47.7 7.1 56.4 41.4
18 5.4 48.4 38.3 3.6 32.5 30.5 ———7.3 65.2 45.3 5.6 50.5 39.1 3.9 35.1 31.8 9.5 85.4 52.7 7.5 67.8 45.7 5.9 52.8 39.9
30
10 24.8 124.1 87.5 19.0 95.2 74.3 14.8 73.7 64.0 31.5 157.5 100.7 25.4 126.9 87.2 19.4 97.1 74.8 38.8 194.1 113.6 32.5 162.6 100.0 25.9 129.3 86.8
12 19.4 116.4 84.0 14.9 89.4 71.5 11.7 70.2 61.3 25.1 150.8 97.6 20.0 119.8 84.2 15.3 91.9 72.5 31.2 187.0 110.5 25.9 155.3 97.0 20.3 122.0 84.0
14 15.5 108.5 80.3 12.0 83.8 68.8 7.4 51.7 51.7 20.4 142.7 94.0 16.0 112.0 80.8 12.4 86.9 70.1 25.7 179.8 107.3 21.1 147.8 94.0 16.4 114.7 81.2
16 12.6 100.9 76.7 9.8 78.4 65.9 ———16.8 134.3 90.3 13.1 104.6 77.6 10.3 82.0 67.6 21.4 171.5 103.8 17.4 139.3 90.6 13.5 108.0 78.6
18 10.4 93.5 73.2 8.1 72.5 62.3 ———13.9 125.3 86.5 10.8 97.4 74.5 8.6 77.1 64.7 18.0 162.1 100.1 14.5 130.1 87.1 11.3 101.3 75.9
40
10 34.1 170.7 119.2 26.4 132.1 101.4 20.4 102.1 87.3 —— —34.9 174.6 118.6 26.8 134.0 101.6 ————— —35.6 178.2 118.0
12 27.2 162.9 115.5 21.0 126.0 98.5 16.5 98.7 84.9 34.6 207.5 133.1 27.7 166.3 115.0 21.3 128.0 99.0 ———35.6 213.9 132.2 28.2 169.2 114.5
14 22.0 153.9 111.4 17.0 118.8 95.1 10.7 74.6 74.6 28.4 199.0 129.3 22.5 157.7 111.3 17.4 121.8 96.2 35.4 247.5 146.5 29.2 204.6 128.4 22.9 160.5 111.2
16 18.1 144.7 107.0 14.1 112.6 91.9 8.4 67.5 67.5 23.7 189.8 125.1 18.6 148.9 107.5 14.6 116.6 93.6 29.8 238.6 142.6 24.4 195.2 124.6 19.0 151.8 107.7
18 15.1 135.6 102.7 11.8 106.2 88.4 ———19.9 179.4 120.6 15.6 140.2 103.8 12.4 111.3 90.7 25.5 229.3 138.6 20.6 185.5 120.8 16.0 143.6 104.5
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)
UNIT
SIZE
42BHC
∆
∆∆
∆T
75 F DB/63 F WB 80 F DB/67 F WB 85 F DB/71 F WB
40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT
GPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCbGPM TCbSCb
08
10 7.4 36.9 25.4 5.7 28.5 21.4 4.4 21.9 18.4 9.3 46.8 29.3 7.6 38.0 25.3 5.8 29.1 21.5 11.6 57.7 33.2 9.7 48.5 29.1 7.8 38.8 25.1
12 5.8 34.7 24.3 4.5 26.8 20.7 3.5 21.0 17.9 7.5 45.0 28.4 6.0 35.8 24.3 4.6 27.5 20.8 9.3 55.8 32.3 7.7 46.4 28.2 6.1 36.7 24.3
14 4.6 32.3 23.2 3.6 25.0 19.8 2.9 20.1 17.2 6.1 42.6 27.3 4.8 33.5 23.3 3.7 25.8 20.1 7.7 53.8 31.4 6.3 44.3 27.3 4.9 34.4 23.4
16 3.8 30.3 22.2 2.9 23.2 19.0 1.8 14.3 14.3 5.0 40.0 26.2 3.9 31.2 22.3 3.0 24.2 19.4 6.4 51.4 30.3 5.2 41.6 26.2 4.0 32.2 22.5
18 3.1 27.9 21.1 2.4 21.8 18.2 1.4 12.5 12.5 4.2 37.5 25.1 3.2 29.3 21.5 2.6 23.1 18.8 5.4 48.7 29.2 4.3 38.8 25.1 3.3 29.9 21.6
12
10 11.3 56.6 38.6 8.8 44.1 32.8 6.8 34.0 28.2 14.3 71.5 44.5 11.7 58.2 38.4 8.9 44.7 32.7 17.6 87.7 50.4 14.8 74.1 44.2 11.9 59.5 38.1
12 9.0 54.2 54.2 7.0 42.0 31.8 5.5 33.1 27.6 11.5 69.0 43.3 9.2 55.4 37.2 7.1 42.7 31.8 14.2 85.2 49.2 11.9 71.3 43.0 9.4 56.5 36.9
14 7.3 51.4 51.6 5.7 39.8 30.8 4.6 32.2 27.0 9.5 66.3 42.1 7.5 52.6 36.0 5.8 40.7 31.0 11.8 82.5 47.9 9.8 68.4 41.7 7.7 53.8 35.9
16 6.1 48.6 48.6 4.7 37.6 29.7 2.9 23.3 23.3 7.9 63.4 40.7 6.2 49.8 34.8 4.7 38.9 30.2 9.9 79.5 46.6 8.2 65.3 40.5 6.4 51.0 34.8
18 5.1 45.7 45.7 3.9 35.4 28.6 2.3 20.8 20.8 6.7 60.3 39.3 5.1 46.6 33.5 4.1 37.0 29.3 8.5 76.5 45.3 6.9 61.9 39.1 5.4 48.4 33.7
16
10 15.1 75.7 51.6 11.8 59.1 43.8 9.2 45.8 37.8 19.1 95.5 59.5 15.5 77.7 51.3 12.0 60.1 43.8 23.4 117.0 67.2 19.8 99.0 59.0 15.9 79.5 50.9
12 12.0 72.1 50.0 9.3 56.0 42.4 7.4 44.5 37.0 15.3 92.1 57.8 12.4 74.2 49.7 9.5 57.2 42.6 19.0 113.7 65.6 15.9 95.3 57.4 12.6 75.6 49.4
14 9.7 68.1 48.0 7.6 53.1 41.0 6.2 43.3 36.1 12.6 88.5 56.1 10.0 70.2 48.0 7.8 54.7 41.5 15.7 110.0 63.9 13.0 91.2 55.7 10.2 71.6 47.8
16 8.0 64.2 46.1 6.3 50.2 39.7 3.7 29.8 29.8 10.5 84.2 54.2 8.3 66.3 46.3 6.5 52.1 40.3 13.3 106.2 62.2 10.9 87.2 54.0 8.5 68.1 46.4
18 6.7 60.3 44.3 5.3 47.5 38.3 2.9 26.2 26.2 8.8 79.5 52.0 6.9 62.3 44.6 5.5 49.7 39.1 11.3 101.6 60.1 9.1 82.2 52.0 7.1 64.2 44.9
20
10 19.0 95.0 64.7 14.8 74.1 54.9 11.5 57.5 47.4 23.9 119.4 74.4 19.5 97.5 64.2 15.1 75.4 54.8 29.3 146.3 84.0 24.8 123.9 73.8 19.9 99.7 63.7
12 15.2 91.1 62.8 11.8 70.9 53.4 9.4 56.2 46.5 19.3 115.6 72.5 15.5 93.2 62.3 12.0 72.1 53.4 23.7 142.5 82.1 19.9 119.4 71.8 15.8 95.0 61.9
14 12.4 87.0 60.8 9.7 67.7 51.9 7.9 55.1 45.7 15.9 111.3 70.5 12.7 88.8 60.4 9.8 68.9 52.0 19.7 138.0 80.1 16.4 114.7 69.9 12.9 90.5 60.1
16 10.3 82.3 58.6 8.0 64.2 50.2 4.9 39.1 39.1 13.4 106.9 68.5 10.5 84.1 58.4 8.3 66.2 50.9 16.7 133.4 78.0 13.7 109.7 67.8 10.8 86.2 58.4
18 8.6 77.5 56.3 6.8 61.1 48.6 3.9 35.1 35.1 11.3 101.6 66.0 8.9 80.0 56.6 7.1 63.3 49.6 14.3 128.6 75.9 11.6 104.6 65.6 9.1 81.7 56.4
30
10 28.7 143.5 97.6 22.4 112.3 82.9 17.4 87.1 71.5 36.1 180.4 112.2 29.5 147.3 96.9 22.8 114.1 82.7 44.2 220.8 126.7 37.4 187.1 111.2 30.2 150.8 96.2
12 23.0 137.8 94.8 17.9 107.1 80.5 14.2 85.3 70.3 29.1 174.5 109.3 23.5 140.9 94.1 18.2 109.0 80.6 35.8 214.8 123.8 30.1 180.4 108.4 24.0 143.8 93.4
14 18.6 130.3 91.2 14.5 101.6 77.9 11.9 83.2 68.8 24.0 168.0 106.3 19.1 133.6 90.9 15.0 104.8 78.7 29.7 208.2 120.8 24.7 173.2 105.3 19.6 137.1 90.8
16 15.4 123.0 87.8 12.1 96.5 75.5 7.1 56.7 56.7 20.1 160.5 102.8 15.9 126.9 88.0 12.5 99.9 76.6 25.2 201.4 117.6 20.7 165.7 102.2 16.2 129.8 87.9
18 12.8 115.5 84.2 10.2 91.6 73.1 5.5 49.6 49.6 16.9 152.2 99.0 13.3 119.7 84.9 10.6 95.7 74.6 21.6 194.1 114.4 17.5 157.2 98.7 13.7 123.4 85.4
40
10 39.1 195.6 132.2 30.7 153.4 112.2 23.9 119.4 96.8 49.0 245.0 151.8 40.2 200.9 131.2 31.2 156.0 111.9 59.4 296.8 170.1 50.9 254.2 150.4 41.1 205.7 130.1
12 31.4 188.6 128.8 24.6 147.6 109.5 19.6 117.8 95.7 39.6 237.8 148.3 32.2 193.1 127.7 25.0 150.0 109.3 48.7 291.9 167.7 41.0 246.0 146.9 32.9 197.1 126.6
14 25.9 181.1 125.2 20.1 140.7 106.3 16.5 115.7 94.2 32.9 230.1 144.6 26.4 184.7 124.1 20.6 144.3 106.9 40.6 284.0 164.0 33.9 237.3 143.1 26.9 188.3 123.2
16 21.4 171.5 120.5 16.9 135.1 103.6 10.1 80.8 80.8 27.7 221.6 140.6 22.0 176.3 120.3 17.3 138.3 104.3 34.4 275.4 160.0 28.6 228.8 139.3 22.5 179.8 119.8
18 18.1 163.0 116.5 14.3 128.8 100.7 8.2 73.6 73.6 23.6 212.6 136.5 18.5 166.7 116.2 14.8 133.3 102.0 29.6 266.4 155.9 24.2 218.0 135.1 19.0 171.3 116.5
DB — Dry Bulb Temperature
EWT — Entering Water Temperature
MBtuh — Thousands of Btuh
SCb—Base Sensible Capacity at Nominal Cfm
TCb—Base Total Capacity at Nominal Cfm
WB — Wet Bulb Temperature
∆
∆∆
∆T—
Change in Water Temperature (F)

14
DIRECT EXPANSION (DX) BASE COOLING CAPACITIES* (MBtuh)
4-ROW COIL
LEGEND
*Capacity based on R-22 refrigerant at 105 F liquid temperature and 10 degrees F superheat.
UNIT
SIZE
42BHC
CONNECTION
SIZE (in.) CFM
R-22
SUCTION
TEMP (F)
ENTERING-AIR TEMPERATURE (F) — DB/WB
75/63 80/63 75/67 80/67 80/71 85/71
LiquidSuction THSHTH SH THSHTH SH THSHTH SH
08 3/85/8
600 40 17.1 13.0 17.8 16.1 21.8 12.0 22.1 15.0 27.0 13.8 27.2 16.9
45 12.7 11.0 14.2 14.1 17.1 10.0 17.4 13.0 22.4 12.0 22.6 15.0
50 8.5 8.5 11.1 11.1 11.9 7.9 12.6 11.0 17.2 10.0 17.5 13.1
800 40 20.0 15.9 21.0 19.9 25.2 14.3 25.5 18.2 30.9 16.4 31.2 20.3
45 15.0 13.6 16.8 16.8 19.9 12.1 20.2 16.0 25.8 14.4 26.1 18.3
50 10.5 10.5 13.7 13.7 13.8 9.8 15.0 13.7 19.8 12.2 20.3 16.1
900 40 21.1 17.2 22.4 21.5 26.6 15.4 26.9 19.6 32.5 17.6 32.8 21.8
45 16.0 14.8 18.2 18.2 21.0 13.1 21.4 17.4 27.2 15.5 27.5 19.8
50 11.4 11.4 14.9 14.9 14.6 10.6 16.0 15.0 21.0 13.2 21.5 17.5
12 1/27/8
1000 40 29.2 21.9 30.0 27.0 37.4 20.4 37.8 25.4 46.6 23.8 47.0 28.8
45 21.3 18.3 23.8 23.4 29.0 16.8 29.5 21.8 38.2 20.3 38.7 25.3
50 14.2 14.2 18.5 18.5 20.1 13.2 21.1 18.4 29.1 16.8 29.6 21.8
1200 40 32.5 25.0 33.6 30.9 41.5 23.0 41.9 28.8 51.6 26.7 52.0 32.5
45 23.8 21.0 26.2 26.2 32.2 19.1 32.7 25.0 42.3 23.0 42.8 28.8
50 16.3 16.3 21.3 21.3 22.2 15.2 23.6 21.2 32.2 19.1 32.7 25.0
1300 40 33.9 26.4 35.3 32.7 43.3 24.2 43.8 30.4 53.7 28.1 54.2 34.3
45 24.9 22.3 27.7 27.7 33.6 20.2 34.2 26.4 44.1 24.2 44.6 30.4
50 17.3 17.3 22.5 22.5 23.2 16.1 24.8 22.4 33.6 20.2 34.1 26.5
16 5/87/8
1400 40 38.6 29.7 40.2 36.8 49.7 27.5 50.2 34.4 62.0 32.0 62.6 39.0
45 28.2 24.9 31.0 31.0 38.3 22.7 38.9 29.7 50.6 27.4 51.2 34.4
50 19.2 19.2 25.1 25.1 26.0 17.9 28.0 25.1 38.2 22.7 38.9 29.7
1600 40 41.7 32.7 43.6 40.6 53.4 30.0 54.0 37.8 66.5 34.8 67.2 42.6
45 30.5 27.6 34.2 34.2 41.2 24.9 41.8 32.7 54.4 30.0 55.0 37.7
50 21.1 21.1 27.7 27.7 28.0 19.8 30.3 27.7 41.0 24.9 41.8 32.8
1800 40 44.4 35.4 46.7 44.1 56.8 32.3 57.5 40.9 70.6 37.4 71.3 45.9
45 32.7 30.0 37.1 37.1 43.8 26.9 44.5 35.5 57.7 32.3 58.4 40.9
50 23.0 23.0 30.1 30.1 29.7 21.5 32.5 30.2 43.6 27.0 44.5 35.7
20 5/87/8
1800 40 47.8 37.3 49.9 46.3 61.0 34.1 61.7 43.0 75.6 39.5 76.3 48.3
45 35.2 31.5 39.1 39.1 47.4 28.5 48.2 37.3 62.3 34.2 63.0 43.0
50 24.3 24.3 31.8 31.8 32.6 22.7 35.1 31.7 47.4 28.6 48.2 37.5
2000 40 50.6 40.1 53.1 49.9 64.4 36.5 65.1 46.1 79.6 42.1 80.3 51.7
45 37.5 34.1 42.1 42.1 50.1 30.6 50.9 40.2 65.7 36.5 66.4 46.2
50 26.3 26.3 34.3 34.3 34.4 24.5 37.3 34.3 50.1 30.7 51.0 40.4
2200 40 53.1 42.8 56.0 53.3 67.5 38.7 68.2 49.1 83.2 44.5 84.0 54.9
45 39.6 36.5 45.0 45.0 52.5 32.5 53.4 43.0 68.7 38.8 69.5 49.2
50 28.1 28.1 36.6 36.6 36.1 26.2 39.4 36.7 52.4 32.7 53.6 43.2
30 5/811/8
2600 40 80.2 59.7 81.7 72.7 100.6 55.4 101.7 68.4 123.3 63.5 124.2 76.5
45 60.4 50.7 65.5 64.0 80.5 46.7 81.6 59.7 103.4 55.4 104.5 68.3
50 42.7 41.8 51.9 51.9 58.3 37.8 60.2 50.9 81.4 46.8 82.4 59.8
2800 40 83.7 62.9 85.4 76.7 104.7 58.1 105.9 71.8 128.2 66.5 129.2 80.2
45 63.1 53.6 68.8 67.5 83.9 49.1 85.0 62.9 107.7 58.1 108.7 71.9
50 44.9 44.2 54.8 54.8 60.7 39.9 62.9 53.8 84.7 49.2 85.8 63.0
3000 40 86.9 65.9 88.8 80.5 108.7 60.6 109.8 75.2 132.8 69.3 133.8 83.8
45 65.6 56.3 71.9 71.0 87.0 51.4 88.2 66.0 111.6 60.7 112.7 75.3
50 47.0 46.5 57.6 57.6 63.0 41.9 65.4 56.6 87.8 51.6 89.0 66.2
3200 40 89.9 68.8 92.0 84.2 112.4 63.0 113.5 78.4 136.8 72.0 138.1 87.3
45 68.0 59.0 74.9 74.3 90.0 53.6 91.2 69.0 115.3 63.2 116.4 78.5
50 49.0 48.7 60.3 60.3 65.2 43.8 67.8 59.3 90.8 53.8 92.0 69.2
40 7/811/8
3600 40 108.8 81.9 111.1 99.8 136.0 75.6 137.4 93.5 116.2 86.4 167.3 104.2
45 82.3 70.0 89.7 88.1 109.3 64.2 110.6 82.0 139.9 75.7 141.2 93.5
50 58.8 57.9 71.6 71.6 79.4 52.2 82.2 70.3 110.4 64.3 111.8 82.2
3800 40 112.1 85.0 114.5 103.7 140.1 78.2 141.3 96.8 170.7 89.2 172.1 107.8
45 84.9 72.8 92.6 91.6 112.5 66.5 113.9 85.2 143.9 78.3 145.2 97.0
50 60.9 60.2 74.4 74.4 81.7 54.2 84.7 73.1 113.6 66.7 115.0 85.4
4000 40 115.2 88.0 117.8 107.5 143.8 80.7 145.1 100.1 174.8 92.0 176.3 111.4
45 87.4 75.5 96.0 95.0 115.5 68.7 117.0 88.2 147.6 80.9 149.0 100.3
50 63.0 62.5 77.2 77.2 83.9 56.2 87.2 75.9 116.6 69.0 118.1 88.5
4200 40 118.2 90.9 121.0 111.2 147.3 83.0 148.7 103.3 178.9 94.6 180.4 114.8
45 89.8 78.1 99.0 98.3 118.4 70.9 119.9 91.2 151.2 83.3 152.7 103.6
50 65.0 64.7 79.9 79.9 86.1 58.1 89.5 78.6 119.5 71.2 121.1 91.5
DB — Dry Bulb
SH — Sensible
TH — Total Heat
WB — Wet Bulb
Performance data (cont)

15
DIRECT EXPANSION (DX) BASE COOLING CAPACITIES* (MBtuh) (cont)
6-ROW COIL
LEGEND
*Capacity based on R-22 refrigerant at 105 F liquid temperature and 10 degrees F superheat.
UNIT
SIZE
42BHC
CONNECTION
SIZE (in.) CFM
R-22
SUCTION
TEMP (F)
ENTERING AIR TEMPERATURE (F) — DB/WB
75/63 80/63 75/67 80/67 80/71 85/71
LiquidSuction THSHTHSHTHSHTHSHTHSHTHSH
08 3/85/8
600 40 21.3 15.4 21.8 18.8 26.6 14.3 26.8 17.6 32.3 16.3 32.4 19.6
45 16.3 13.2 17.5 16.7 21.6 12.2 21.8 15.5 27.5 14.4 27.7 17.7
50 11.4 10.9 13.5 13.5 15.8 9.8 16.4 13.2 22.0 12.2 22.2 15.5
800 40 25.0 19.1 25.8 23.5 30.9 17.2 31.0 21.5 37.0 19.5 37.2 23.7
45 19.4 16.5 21.3 21.0 25.2 14.9 25.6 19.2 31.9 17.4 32.1 21.7
50 14.1 13.8 17.0 17.0 18.5 12.2 19.5 16.7 25.7 15.0 26.1 19.4
900 40 26.5 20.7 27.6 25.6 32.5 18.5 32.7 23.3 38.9 20.8 39.1 25.6
45 20.8 18.1 23.1 22.9 26.7 16.1 27.1 20.9 33.7 18.7 33.9 23.5
50 15.3 15.2 18.5 18.5 19.7 13.3 20.9 18.3 27.1 16.3 27.6 21.1
12 1/27/8
1000 40 39.0 27.4 39.4 32.9 48.6 25.9 48.9 31.4 59.0 29.6 59.3 35.1
45 30.0 23.3 31.4 29.0 39.7 21.9 40.0 27.4 50.4 25.9 50.7 31.4
50 21.1 19.2 23.8 23.8 29.7 17.7 30.3 23.3 40.6 21.9 41.0 27.4
1200 40 43.7 31.5 44.3 38.0 54.1 29.4 54.6 35.8 65.6 33.4 65.9 39.8
45 33.8 26.9 35.7 33.7 44.4 25.1 44.9 31.5 56.0 29.5 56.6 35.9
50 24.0 22.4 27.7 27.7 33.1 20.5 34.0 27.0 45.3 25.1 45.8 31.6
1300 40 45.9 33.4 46.5 40.4 56.6 31.0 57.1 37.9 68.4 35.1 68.7 42.0
45 35.5 28.7 37.6 35.9 46.5 26.5 47.0 33.5 58.6 31.1 59.2 38.0
50 25.4 24.0 29.6 29.6 34.9 21.8 35.7 28.8 47.4 26.6 47.9 33.5
16 5/87/8
1400 40 52.8 37.6 53.5 45.3 65.9 35.4 66.3 43.1 80.1 40.5 80.5 48.1
45 40.5 32.0 42.7 40.0 53.6 30.0 54.1 37.6 68.1 35.4 68.7 43.1
50 28.5 26.5 32.7 32.7 39.7 24.3 40.7 32.0 54.6 39.0 55.2 37.6
1600 40 57.3 41.6 58.3 50.3 71.1 38.8 71.7 47.4 86.3 44.1 86.8 52.7
45 44.1 35.6 46.9 44.6 58.1 33.0 58.7 41.7 73.6 38.9 74.2 47.5
50 31.3 29.6 36.5 36.5 43.1 26.9 44.3 35.7 59.2 33.1 59.7 41.7
1800 40 61.4 45.3 62.6 55.0 75.9 41.9 76.6 51.4 91.8 47.5 92.3 57.0
45 47.4 39.0 50.8 49.0 62.1 35.9 62.7 45.5 78.4 42.0 79.2 51.6
50 34.0 32.6 40.1 40.1 46.2 29.4 47.6 39.2 63.2 36.0 63.8 45.6
20 5/87/8
1800 40 64.7 46.9 65.7 56.8 80.0 43.6 80.6 53.3 96.6 49.4 97.0 59.1
45 50.2 40.3 53.1 50.5 65.8 37.3 66.4 47.1 82.9 43.7 83.6 53.4
50 35.7 33.6 41.5 41.5 49.3 30.6 50.5 40.5 67.2 37.4 67.8 47.2
2000 40 68.7 50.6 70.0 61.5 84.6 46.6 85.3 57.3 101.9 52.7 102.4 63.3
45 53.5 43.7 57.1 54.9 69.8 40.2 70.4 50.9 87.7 46.9 88.4 57.5
50 38.5 36.7 45.1 45.1 52.4 33.1 53.8 44.0 71.2 40.4 71.9 51.1
2200 40 72.3 54.2 74.0 66.0 89.0 49.4 89.6 61.1 106.7 55.7 107.2 67.3
45 56.5 47.0 60.8 59.1 73.4 42.8 74.1 54.5 92.1 49.8 92.8 61.4
50 41.1 36.9 48.5 48.5 55.2 35.5 56.9 47.4 74.8 43.1 75.6 54.8
30 5/811/8
2600 40 101.1 71.9 102.4 86.2 126.1 68.1 126.9 82.3 153.4 77.9 154.2 92.1
45 77.7 61.1 81.6 76.0 102.7 57.7 103.6 71.9 130.6 68.0 131.4 82.2
50 54.7 50.6 62.5 62.5 76.3 46.8 78.1 61.2 104.7 57.6 105.7 71.8
2800 40 106.0 76.1 107.4 91.4 132.0 71.7 132.9 86.9 160.3 81.8 161.1 97.0
45 81.6 64.9 86.0 80.8 107.5 60.9 108.5 76.1 136.2 71.7 137.5 86.8
50 57.7 53.9 66.4 66.4 80.0 49.5 81.9 65.0 109.5 60.8 110.6 76.0
3000 40 110.6 80.1 112.2 96.4 137.2 75.1 138.4 91.2 166.7 85.5 167.6 101.6
45 85.2 68.5 90.2 85.4 112.1 63.9 113.2 80.1 141.8 75.2 143.2 91.3
50 60.5 57.0 70.1 70.1 83.4 52.2 85.5 68.6 114.1 64.0 115.2 80.2
3200 40 115.0 83.9 116.8 101.3 142.4 78.4 143.7 95.5 172.7 89.0 173.7 106.1
45 88.7 72.0 94.2 89.9 116.4 66.9 117.6 84.0 147.1 78.5 148.5 95.6
50 63.3 60.1 73.8 73.8 86.6 54.7 89.0 72.2 118.4 67.0 119.6 84.1
40 7/811/8
3600 40 136.5 98.3 138.2 118.0 168.6 92.0 169.6 111.5 203.1 104.1 203.9 123.6
45 106.5 84.5 111.8 104.9 139.0 78.9 140.2 98.5 174.5 92.3 176.0 111.7
50 76.2 70.7 86.8 86.8 105.0 64.9 107.3 84.8 142.1 79.1 143.3 98.7
3800 40 141.0 102.2 142.8 123.0 173.5 95.3 174.9 115.8 209.0 107.7 210.0 128.2
45 110.1 88.1 115.9 109.5 143.5 82.0 144.7 102.5 179.8 95.6 181.4 116.1
50 79.0 73.9 90.7 90.7 108.4 67.6 110.9 88.4 146.6 82.2 147.9 102.8
4000 40 145.2 106.1 147.3 127.8 178.5 98.5 179.9 119.9 214.7 111.1 215.7 132.5
45 113.6 91.6 119.9 114.1 147.7 84.9 149.0 106.4 184.9 98.9 186.5 120.3
50 81.8 77.0 94.4 94.4 111.7 70.2 114.4 92.0 150.8 85.2 152.2 106.8
4200 40 149.2 109.8 151.7 132.6 183.2 101.6 184.6 123.9 220.0 114.3 221.0 136.8
45 116.9 95.1 123.8 118.5 151.8 87.7 153.1 110.3 189.7 102.0 191.4 124.4
50 84.5 80.1 98.1 98.1 114.9 72.7 117.7 95.6 154.9 88.1 156.3 110.7
DB — Dry Bulb
SH — Sensible
TH — Total Heat
WB — Wet Bulb

16
UNIT HORSEPOWER DATA TABLE
LEGEND
NOTES:
1. Contact factory if higher horsepower selection is required for a given cfm and
total static pressure.
2. The variable pitch motor sheave provided will allow + 15% rpm adjustment.
Unit sizes 08,12 and 16 have 3/4in. bore fan sheaves. Unit sizes 20, 30 and 40
have 1-in. bore fan sheaves.
3. Consult factory for motor selections when outlet air temperature exceeds 104 F
on hot water coil applications.
4. Single-phase motors are only available to 2 hp. Three-phase motors are avail-
able from 1/2to 3 hp.
UNIT
SIZE
42BHC
BLOWER CFM
TOTAL STATIC PRESSURE (in. wg)
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
08 9" x 6"
600 670 0.07 745 0.09 815 0.11 880 0.12 942 0.14 1000 0.16 1055 0.18 1108 0.20 1159 0.22
700 706 0.10 776 0.11 842 0.13 903 0.15 962 0.17 1018 0.19 1071 0.21 1123 0.24 1172 0.26
800 748 0.12 812 0.14 874 0.17 932 0.19 988 0.21 1041 0.23 1092 0.25 1142 0.28 1190 0.30
900 794 0.16 853 0.18 910 0.20 965 0.23 1018 0.25 1069 0.28 1118 0.30 1165 0.33 1211 0.35
1000 ——————————1103 0.34 1149 0.36 1193 0.39 1236 0.41
12 10" x 7"
1000 629 0.13 688 0.15 744 0.18 789 0.20 849 0.22 898 0.24 946 0.26 991 0.29 1035 0.31
1100 656 0.16 712 0.19 765 0.21 816 0.23 865 0.26 912 0.28 958 0.30 1002 0.33 1044 0.35
1200 686 0.20 738 0.22 789 0.25 837 0.27 884 0.30 929 0.32 973 0.35 1015 0.38 1056 0.40
1300 717 0.24 767 0.27 814 0.29 861 0.32 905 0.35 948 0.37 990 0.40 1031 0.43 1071 0.46
1400 ——————————968 0.43 1008 0.46 1048 0.49 1086 0.52
16 11" x 10"
1400 ——648 0.20 699 0.23 747 0.26 792 0.29 834 0.31 875 0.34 913 0.37 949 0.40
1500 611 0.20 664 0.23 714 0.26 761 0.29 805 0.32 847 0.35 887 0.38 925 0.41 961 0.44
1600 631 0.24 682 0.27 730 0.30 776 0.33 819 0.36 860 0.39 899 0.42 937 0.45 973 0.48
1700 651 0.27 700 0.3 747 0.34 791 0.37 834 0.40 874 0.43 913 0.47 950 0.50 986 0.53
1800 ——————————890 0.49 928 0.52 965 0.56 1000 0.60
20 12" x 9"
1800 ——629 0.32 672 0.36 712 0.39 751 0.43 788 0.46 824 0.50 860 0.54 894 0.57
1900 603 0.32 646 0.36 686 0.40 726 0.43 763 0.47 800 0.51 835 0.55 869 0.59 903 0.62
2000 621 0.36 662 0.40 702 0.44 740 0.48 777 0.52 812 0.56 846 0.60 880 0.64 913 0.68
2100 639 0.41 679 0.45 718 0.49 755 0.53 790 0.57 825 0.61 859 0.66 891 0.70 923 0.74
2200 658 0.46 697 0.50 734 0.54 770 0.59 805 0.63 839 0.67 871 0.71 903 0.76 935 0.80
2300 ————————————887 0.78 918 0.83 947 0.87
2400 ——————————————932 0.90 961 0.95
30 12" x 12"
2400 604 0.43 647 0.47 688 0.52 728 0.57 766 0.62 803 0.66 840 0.71 875 0.76 909 0.82
2600 633 0.52 674 0.57 713 0.62 750 0.67 787 0.72 823 0.77 857 0.82 891 0.88 924 0.93
2800 660 0.62 701 0.67 739 0.73 775 0.78 810 0.84 844 0.89 877 0.95 909 1.01 941 1.06
3000 694 0.74 730 0.79 766 0.85 800 0.91 834 0.97 866 1.03 898 1.09 929 1.15 960 1.21
3200 726 0.87 760 0.93 794 0.99 827 1.05 859 1.12 890 1.18 921 1.24 951 1.30 980 1.37
3400 ————————————944 1.42 972 1.48 1000 1.55
40 15" x 12"
3400 ————609 0.79 639 0.85 668 0.91 697 0.97 724 1.04 752 1.10 778 1.16
3600 ————627 0.90 656 0.96 684 1.03 712 1.09 738 1.16 765 1.22 791 1.29
3800 ——616 0.95 646 1.02 674 1.09 701 1.16 727 1.22 753 1.29 779 1.36 804 1.43
4000 607 1.01 637 1.08 665 1.15 692 1.22 718 1.29 744 1.37 769 1.44 794 1.51 818 1.58
4200 629 1.14 657 1.22 684 1.30 711 1.37 736 1.45 761 1.52 786 1.59 809 1.67 833 1.74
4400 ————————————806 1.79 829 1.87 852 1.95
UNIT
SIZE
42BHC
BLOWER CFM
TOTAL STATIC PRESSURE (in. wg)
1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
08 9" x 6"
600 1208 0.24 ————————————————
700 1220 0.28 1266 0.30 1310 0.33 1353 0.35 1395 0.37 ————————
800 1236 0.33 1280 0.35 1324 0.38 1366 0.40 1407 0.43 1447 0.45 1486 0.48 1524 0.51 1562 0.53
900 1256 0.38 1299 0.40 1341 0.43 1382 0.46 1423 0.49 1462 0.52 1500 0.54 1537 0.57 1574 0.60
1000 1278 0.44 1319 0.47 1359 0.49 1398 0.52 1436 0.55 1474 0.57 1510 0.60 1546 0.63 1582 0.65
12 10" x 7"
1000 1078 0.33 1120 0.36 1160 0.38 1200 0.40 1239 0.43 1276 0.45 1313 0.47 1349 0.50 1385 0.52
1100 1086 0.38 1126 0.40 1166 0.43 1222 0.48 1242 0.48 1279 0.51 1315 0.53 1350 0.56 1396 0.61
1200 1097 0.43 1136 0.46 1174 0.48 1211 0.51 1248 0.54 1284 0.57 1319 0.59 1353 0.62 1387 0.65
1300 1110 0.49 1148 0.51 1185 0.54 1221 0.57 1257 0.60 1292 0.63 1326 0.66 1359 0.69 1392 0.72
1400 1124 0.55 1162 0.58 1198 0.61 1234 0.64 1269 0.67 1304 0.70 1338 0.73 1371 0.77 1404 0.80
16 11" x 10"
1400 985 0.42 1018 0.45 1051 0.48 1083 0.51 1113 0.54 1143 0.57 1172 0.59 1200 0.62 1227 0.65
1500 996 0.47 1030 0.50 1062 0.53 1094 0.56 1124 0.59 1154 0.62 1182 0.65 1210 0.68 1238 0.71
1600 1008 0.52 1041 0.55 1074 0.58 1105 0.61 1135 0.64 1165 0.67 1193 0.71 1221 0.74 1248 0.77
1700 1020 0.57 1053 0.60 1085 0.63 1116 0.67 1146 0.70 1176 0.73 1204 0.77 1232 0.80 1259 0.84
1800 1033 0.63 1065 0.66 1097 0.70 1128 0.73 1157 0.77 1186 0.80 1215 0.84 1242 0.87 1268 0.90
20 12" x 9"
1800 927 0.61 959 0.65 991 0.69 1022 0.73 1052 0.77 ————————
1900 935 0.66 967 0.70 998 0.74 1028 0.78 1058 0.83 1087 0.87 1115 0.91 ————
2000 944 0.72 975 0.76 1006 0.80 1035 0.85 1065 0.89 1093 0.93 1121 0.97 1149 1.02 1176 1.06
2100 954 0.78 985 0.82 1014 0.87 1043 0.91 1072 0.96 1100 1.00 1128 1.04 1155 1.09 1181 1.14
2200 965 0.85 995 0.89 1024 0.94 1052 0.98 1080 1.03 1108 1.07 1135 1.12 1162 1.17 1188 1.21
2300 976 0.92 1004 0.96 1032 1.01 1060 1.05 1087 1.10 1114 1.14 1141 1.19 1167 1.24 1193 1.28
2400 989 0.99 1016 1.04 1044 1.09 1071 1.13 1097 1.18 1124 1.23 1150 1.28 1175 1.32 1200 1.37
30 12" x 12"
2400 943 0.87 976 0.92 1008 0.97 1039 1.03 1070 1.08 1101 1.14 1130 1.20 1160 1.26 1189 1.32
2600 956 0.99 988 1.04 1019 1.10 1049 1.16 1079 1.21 1108 1.27 1137 1.33 1166 1.39 1194 1.45
2800 972 1.12 1002 1.18 1032 1.24 1062 1.30 1090 1.36 1119 1.42 1147 1.48 1174 1.54 1201 1.61
3000 990 1.27 1019 1.33 1048 1.39 1076 1.45 1104 1.52 1131 1.58 1158 1.65 1185 1.71 1211 1.78
3200 1009 1.43 1037 1.50 1065 1.56 1093 1.63 1120 1.69 1146 1.76 1172 1.83 1198 1.90 1224 1.97
3400 1027 1.61 1055 1.68 1082 1.75 1108 1.82 1135 1.89 1161 1.96 1186 2.03 1212 2.10 1237 2.17
40 15" x 12"
3400 805 1.23 830 1.30 856 1.36 881 1.43 905 1.51 930 1.58 954 1.65 978 1.73 1001 1.81
3600 816 1.36 841 1.43 865 1.50 889 1.57 913 1.64 937 1.72 960 1.79 983 1.87 1006 1.95
3800 828 1.50 852 1.57 876 1.64 899 1.72 923 1.79 945 1.87 968 1.95 990 2.02 1012 2.10
4000 842 1.65 865 1.73 888 1.80 911 1.88 933 1.95 955 2.03 977 2.11 999 2.19 1020 2.27
4200 856 1.82 879 1.90 901 1.97 923 2.05 945 2.13 966 2.21 987 2.29 1008 2.37 1029 2.46
4400 874 2.03 896 2.11 917 2.19 938 2.27 959 2.35 980 2.43 1000 2.51 1020 2.60 1040 2.68
——
Application not available
Bhp — Horsepower
Performance data (cont)

17
42BHC COMPONENT STATIC RESISTANCE (in. wg)
Hydronic coil pressure drop — All of the factory’s hy-
dronic coils have a coefficient of velocity (Cv) resistance
factor assigned to assist in a more accurate determination
of water pressure drop (see Cv Factor by Coil and Unit Size
table below).
Calculating pressure drop:
The Cv factor is equal to the flow rate of water in gpm
through a piping component when the pressure drop
through the component is 1.0 pounds per square inch
(psi), or 2.31 ft wg.
∆P (ft wg) = ∆P (psi) x 2.31
Use the Cv factor from the Cv Factor by Coil and Unit Size
table to determine the water coil pressure drop.
Coil pressure drop (ft wg):
∆P = (GPM2/Cv2) x 2.31
or
∆P = [GPM/(0.658 x Cv)]2
or
Refer to the Water Pressure Drop for Cv Factor and Water
Flow Rate table. See example on page 8.
Cv FACTOR BY COIL AND UNIT SIZE
UNIT
SIZE
NOMINAL
CFM CABINET
WET COIL DRY COIL ONE-INCH
THROWAWAY
FILTER
ONE-INCH
PLEATED
FILTER
TWO-INCH
THROWAWAY
FILTER
TWO-INCH
PLEATED
FILTER
4
Row
6
Row
8
Row
1
Row
2
Row
4
Row
6
Row
8
Row
08
600 0.04 0.18 0.27 0.36 0.02 0.04 0.08 0.13 0.17 0.02 0.08 0.04 0.06
700 0.06 0.25 0.37 0.50 0.03 0.06 0.12 0.17 0.23 0.03 0.10 0.06 0.08
800 0.08 0.32 0.49 0.65 0.04 0.08 0.15 0.23 0.30 0.04 0.14 0.08 0.11
900 0.10 0.41 0.61 0.82 0.05 0.10 0.19 0.29 0.38 0.05 0.17 0.10 0.14
1000 0.12 0.51 0.76 1.01 0.06 0.12 0.24 0.35 0.47 0.06 0.21 0.12 0.17
12
1000 0.06 0.24 0.36 0.48 0.03 0.06 0.11 0.17 0.22 0.03 0.11 0.06 0.09
1100 0.08 0.29 0.44 0.58 0.03 0.07 0.14 0.20 0.27 0.04 0.14 0.08 0.11
1200 0.09 0.35 0.52 0.69 0.04 0.08 0.16 0.24 0.32 0.05 0.16 0.09 0.13
1300 0.11 0.41 0.61 0.81 0.05 0.09 0.19 0.28 0.38 0.05 0.19 0.11 0.15
1400 0.13 0.47 0.71 0.94 0.05 0.11 0.22 0.33 0.44 0.06 0.22 0.13 0.17
16
1400 0.07 0.26 0.39 0.52 0.03 0.06 0.12 0.18 0.24 0.04 0.13 0.07 0.10
1500 0.09 0.30 0.45 0.60 0.03 0.07 0.14 0.21 0.28 0.04 0.15 0.09 0.12
1600 0.10 0.34 0.51 0.68 0.04 0.08 0.16 0.24 0.32 0.05 0.17 0.10 0.13
1700 0.11 0.38 0.58 0.77 0.04 0.09 0.18 0.27 0.36 0.06 0.19 0.11 0.15
1800 0.12 0.43 0.65 0.86 0.05 0.10 0.20 0.30 0.40 0.06 0.21 0.12 0.17
20
1800 0.12 0.30 0.45 0.60 0.03 0.07 0.14 0.21 0.28 0.04 0.13 0.08 0.10
1900 0.13 0.34 0.50 0.67 0.04 0.08 0.16 0.23 0.31 0.04 0.14 0.08 0.12
2000 0.14 0.37 0.56 0.74 0.04 0.09 0.17 0.26 0.35 0.05 0.16 0.09 0.13
2100 0.16 0.41 0.61 0.82 0.05 0.10 0.19 0.29 0.38 0.05 0.18 0.10 0.14
2200 0.17 0.45 0.67 0.90 0.05 0.10 0.21 0.31 0.42 0.06 0.19 0.11 0.16
2300 0.19 0.49 0.74 0.98 0.06 0.11 0.23 0.34 0.46 0.06 0.21 0.12 0.17
2400 0.21 0.54 0.80 1.07 0.06 0.12 0.25 0.37 0.50 0.07 0.23 0.13 0.19
30
2400 0.11 0.22 0.33 0.43 0.03 0.05 0.10 0.15 0.20 0.04 0.13 0.07 0.10
2600 0.13 0.25 0.38 0.51 0.03 0.06 0.12 0.18 0.24 0.04 0.15 0.09 0.12
2800 0.15 0.29 0.44 0.59 0.03 0.07 0.14 0.21 0.27 0.05 0.17 0.10 0.14
3000 0.18 0.34 0.51 0.68 0.04 0.08 0.16 0.24 0.31 0.06 0.20 0.12 0.16
3200 0.20 0.39 0.58 0.77 0.04 0.09 0.18 0.27 0.36 0.07 0.23 0.13 0.18
3400 0.23 0.43 0.65 0.87 0.05 0.10 0.20 0.30 0.40 0.07 0.25 0.15 0.20
40
3400 0.13 0.24 0.36 0.48 0.03 0.06 0.11 0.17 0.22 0.04 0.15 0.09 0.12
3600 0.15 0.27 0.40 0.54 0.03 0.06 0.12 0.19 0.25 0.05 0.16 0.10 0.13
3800 0.16 0.30 0.45 0.60 0.03 0.07 0.14 0.21 0.28 0.05 0.18 0.11 0.15
4000 0.18 0.33 0.50 0.66 0.04 0.08 0.15 0.23 0.31 0.06 0.20 0.12 0.16
4200 0.20 0.36 0.55 0.73 0.04 0.08 0.17 0.25 0.34 0.06 0.22 0.13 0.18
4400 0.22 0.40 0.60 0.80 0.05 0.09 0.19 0.28 0.37 0.07 0.25 0.14 0.20
COIL TYPE
42BHC
42BHC UNIT SIZE
08 12 16 20 30 40
1 Row Heat Only 1.4 1.3 1.2 1.2 0.8 0.7
2 Row Heat Only 2.4 2.2 2.0 1.9 1.6 1.4
4 Row Heat/Cool 4.7 4.4 7.2 6.8 13.2 12.4
6 Row Heat/Cool 4.0 3.7 6.1 5.8 11.4 10.5
8 Row Heat/Cool 3.6 3.3 5.3 5.1 9.8 9.0

18
42BHC WATER PRESSURE DROP (ft. wg) FOR CV FACTOR AND WATER FLOW RATE (GPM)
NOTE: Table interpolation is permissible, and extrapolation is not recommended.
Cv
FACTORS
WATER FLOW RATE (GPM)
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 110 11.5 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0
0.8 0.9 3.6 8.1 14.4 22.5 32.4 ——————————————————————————
0.9 0.7 2.8 6.4 11.4 17.8 25.6 34.9 —————————————————————————
1.0 0.5 2.3 5.2 9.2 14.4 20.7 28.2 36.9 ————————————————————————
1.1 0.4 1.9 4.2 7.6 11.9 17.1 23.3 30.5 ————————————————————————
1.2 —1.6 3.6 6.4 10.0 14.4 19.6 25.6 32.4 ———————————————————————
1.3 —1.3 3.0 5.4 8.5 12.3 16.7 21.8 27.6 34.1 ——————————————————————
1.4 —1.1 2.6 4.7 7.3 10.6 14.4 18.8 23.8 29.4 ——————————————————————
1.5 —1.0 2.3 4.1 6.4 9.2 12.5 16.4 20.7 25.6 31.0 —————————————————————
1.6 —0.9 2.0 3.6 5.6 8.1 11.0 14.4 18.2 22.5 27.2 32.4 ————————————————————
1.7 —0.8 1.8 3.2 4.9 7.1 9.7 12.7 16.1 19.9 24.1 28.7 33.7 ———————————————————
1.8 —0.7 1.6 2.8 4.4 6.4 8.7 11.4 14.4 17.8 21.5 25.6 30.1 ———————————————————
1.9 —0.6 1.4 2.5 4.0 5.7 7.8 10.2 12.9 15.9 19.3 23.0 27.0 31.3 ——————————————————
2.0 —0.5 1.3 2.3 3.6 5.2 7.0 9.2 11.6 14.4 17.4 20.7 24.4 28.2 32.4 —————————————————
2.1 —0.5 1.1 2.0 3.2 4.7 6.4 8.3 10.6 13.0 15.8 18.8 22.1 25.6 29.4 33.5 ————————————————
2.2 —0.4 1.0 1.9 2.9 4.2 5.8 7.6 9.6 11.9 14.4 17.1 20.1 23.3 26.8 30.5 ————————————————
2.3 ——0.9 1.7 2.7 3.9 5.3 6.9 8.8 10.9 13.2 15.7 18.4 21.3 24.5 27.9 31.5 ———————————————
2.4 ——0.9 1.6 2.5 3.6 4.9 6.4 8.1 10.0 12.1 14.4 16.9 19.6 22.5 25.6 28.9 32.4 ——————————————
2.5 ——0.8 1.4 2.3 3.3 4.5 5.9 7.4 9.2 11.1 13.3 15.6 18.1 20.7 23.6 26.7 29.9 33.3 —————————————
2.6 ——0.7 1.3 2.1 3.0 4.1 5.4 6.9 8.5 10.3 12.3 14.4 16.7 19.2 21.8 24.6 27.6 30.8 —————————————
2.7 ——0.7 1.2 1.9 2.8 3.8 5.0 6.4 7.9 9.5 11.4 13.3 15.5 17.8 20.2 22.8 25.6 28.5 31.6 ————————————
2.8 ——0.6 1.1 1.8 2.6 3.6 4.7 5.9 7.3 8.9 10.6 12.4 14.4 16.5 18.8 21.2 23.8 26.5 29.4 32.4 ———————————
2.9 ——0.6 1.1 1.7 2.4 3.3 4.3 5.5 6.8 8.3 9.8 11.6 13.4 15.4 17.5 19.8 22.2 24.7 27.4 30.2 ———————————
3.0 ——0.5 1.0 1.6 2.3 3.1 4.1 5.2 6.4 7.7 9.2 10.8 12.5 14.4 16.4 18.5 20.7 23.1 25.6 28.2 31.0 ——————————
3.2 ——0.5 0.9 1.4 2.0 2.7 3.6 4.5 5.6 6.8 8.1 9.5 11.0 12.6 14.4 16.3 18.2 20.3 22.5 24.8 27.2 29.8 —————————
3.4 ——— 0.8 1.2 1.8 2.4 3.2 4.0 4.9 6.0 7.1 8.4 9.7 11.2 12.7 14.4 16.1 18.0 19.9 22.0 24.1 26.4 28.7 ————————
3.6 ——— 0.7 1.1 1.6 2.1 2.8 3.6 4.4 5.3 6.4 7.5 8.7 10.0 11.4 12.8 14.4 16.0 17.8 19.6 21.5 23.5 25.6 30.1 ———————
3.8 ——— 0.6 1.0 1.4 1.9 2.5 3.2 4.0 4.8 5.7 6.7 7.8 9.0 10.2 11.5 12.9 14.4 15.9 17.6 19.3 21.1 23.0 27.0 31.3 ——————
4.0 ——— 0.5 0.9 1.3 1.7 2.3 2.9 3.6 4.3 5.2 6.1 7.0 8.1 9.2 10.4 11.6 13.0 14.4 15.9 17.4 19.0 20.7 24.4 28.2 ——————
4.2 ——— 0.5 0.8 1.1 1.6 2.0 2.6 3.2 3.9 4.7 5.5 6.4 7.3 8.3 9.4 10.6 11.8 13.0 14.4 15.8 17.3 18.8 22.1 25.6 29.4 —————
4.4 ——— 0.4 0.7 1.0 1.4 1.9 2.4 2.9 3.6 4.2 5.0 5.8 6.7 7.6 8.6 9.6 10.7 11.9 13.1 14.4 15.7 17.1 20.1 23.3 26.8 30.5 ————
4.6 ——— — 0.6 0.9 1.3 1.7 2.2 2.7 3.3 3.9 4.6 5.3 6.1 6.9 7.8 8.8 9.8 10.9 12.0 13.2 14.4 15.7 18.4 21.3 24.5 27.9 31.5 ———
4.8 ——— — 0.6 0.9 1.2 1.6 2.0 2.5 3.0 3.6 4.2 4.9 5.6 6.4 7.2 8.1 9.0 10.0 11.0 12.1 13.2 14.4 16.9 19.6 22.5 25.6 28.9 ———
5.0 ——— — 0.5 0.8 1.1 1.4 1.8 2.3 2.7 3.3 3.9 4.5 5.2 5.9 6.6 7.4 8.3 9.2 10.1 11.1 12.2 13.3 15.6 18.1 20.7 23.6 26.7 29.9 ——
5.3 ——— — 0.5 0.7 1.0 1.3 1.6 2.0 2.4 2.9 3.4 4.0 4.6 5.2 5.9 6.6 7.4 8.2 9.0 9.9 10.8 11.8 13.9 16.1 18.5 21.0 23.7 26.6 29.6 —
5.6 ——— — 0.4 0.6 0.9 1.1 1.4 1.8 2.2 2.6 3.1 3.6 4.1 4.7 5.3 5.9 6.6 7.3 8.1 8.9 9.7 10.6 12.4 14.4 16.5 18.8 21.2 23.8 26.5 29.4
5.9 ——— — — 0.6 0.8 1.0 1.3 1.6 2.0 2.3 2.8 3.2 3.7 4.2 4.7 5.3 5.9 6.6 7.3 8.0 8.7 9.5 11.2 13.0 14.9 16.9 19.1 21.5 23.9 26.5
6.2 ——— — — 0.5 0.7 0.9 1.2 1.5 1.8 2.1 2.5 2.9 3.3 3.8 4.3 4.8 5.4 6.0 6.6 7.2 7.9 8.6 10.1 11.7 13.5 15.3 17.3 19.4 21.6 24.0
6.5 ——— — — 0.4 0.6 0.8 1.1 1.3 1.6 1.9 2.3 2.6 3.0 3.5 3.9 4.4 4.9 5.4 6.0 6.6 7.2 7.8 9.2 10.7 12.3 13.9 15.8 17.7 19.7 21.8
6.8 ——— — — — 0.6 0.8 1.0 1.2 1.5 1.8 2.1 2.4 2.8 3.2 3.6 4.0 4.5 4.9 5.5 6.0 6.6 7.1 8.4 9.7 11.2 12.7 14.4 16.1 18.0 19.9
7.1 ——— — — — 0.5 0.7 0.9 1.1 1.3 1.6 1.9 2.2 2.5 2.9 3.3 3.7 4.1 4.5 5.0 5.5 6.0 6.6 7.7 8.9 10.3 11.7 13.2 14.8 16.5 18.3
7.5 ——— — — — 0.5 0.6 0.8 1.0 1.2 1.4 1.7 2.0 2.3 2.6 2.9 3.3 3.7 4.1 4.5 4.9 5.4 5.9 6.9 8.0 9.2 10.5 11.8 13.3 14.8 16.4
8.0 ——— — — — — 0.5 0.7 0.9 1.0 1.3 1.5 1.7 2.0 2.3 2.6 2.9 3.2 3.6 3.9 4.3 4.7 5.2 6.1 7.0 8.1 9.2 10.4 11.6 13.0 14.4
8.5 ——— — — — — 0.5 0.6 0.8 0.9 1.1 1.3 1.5 1.8 2.0 2.3 2.5 2.8 3.2 3.5 3.8 4.2 4.6 5.4 6.2 7.1 8.1 9.2 10.3 11.5 12.7
9.0 ——— — — — — 0.4 0.5 0.7 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.3 2.5 2.8 3.1 3.4 3.7 4.1 4.8 5.5 6.4 7.3 8.2 9.2 10.2 11.4
9.5 ———————— 0.5 0.6 0.7 0.9 1.0 1.2 1.4 1.6 1.8 2.0 2.3 2.5 2.8 3.1 3.3 3.6 4.3 5.0 5.7 6.5 7.4 8.2 9.2 10.2
10.0 ———————— 0.4 0.5 0.7 0.8 0.9 1.1 1.3 1.4 1.6 1.8 2.0 2.3 2.5 2.7 3.0 3.3 3.9 4.5 5.2 5.9 6.6 7.4 8.3 9.2
10.5 ————————— 0.5 0.6 0.7 0.8 1.0 1.1 1.3 1.5 1.7 1.8 2.0 2.3 2.5 2.7 3.0 3.5 4.1 4.7 5.3 6.0 6.7 7.5 8.3
11.0 ————————— 0.4 0.5 0.6 0.8 0.9 1.0 1.2 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 3.2 3.7 4.2 4.8 5.5 6.1 6.8 7.6
11.5 ——————————0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.4 1.5 1.7 1.9 2.1 2.3 2.5 2.9 3.4 3.9 4.4 5.0 5.6 6.3 6.9
12.0 ——————————0.4 0.5 0.6 0.7 0.9 1.0 1.1 1.3 1.4 1.6 1.7 1.9 2.1 2.3 2.7 3.1 3.6 4.1 4.6 5.2 5.7 6.4
13.0 ———————————0.4 0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.3 1.5 1.6 1.8 1.9 2.3 2.6 3.0 3.5 3.9 4.4 4.9 5.4
14.0 ————————————0.5 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.3 1.4 1.5 1.7 1.9 2.3 2.6 3.0 3.4 3.8 4.2 4.7
15.0 —————————————0.5 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.7 2.0 2.3 2.6 2.9 3.3 3.7 4.1
16.0 ——————————————0.5 0.5 0.6 0.7 0.8 0.9 0.9 1.0 1.1 1.3 1.5 1.7 2.0 2.3 2.6 2.9 3.2 3.6
17.0 ———————————————0.5 0.5 0.6 0.7 0.8 0.8 0.9 1.0 1.1 1.3 1.5 1.8 2.0 2.3 2.5 2.8 3.2
18.0 ———————————————0.4 0.5 0.5 0.6 0.7 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0 2.3 2.5 2.8
19.0 ————————————————0.4 0.5 0.5 0.6 0.7 0.7 0.8 0.9 1.0 1.2 1.4 1.6 1.8 2.0 2.3 2.5
20.0 —————————————————0.4 0.5 0.5 0.6 0.7 0.7 0.8 0.9 1.1 1.3 1.4 1.6 1.8 2.0 2.3
Performance data (cont)

19
Typical wiring schematics
BASE UNIT, SINGLE-PHASE POWER
MOTOR CONTROL/DISCONNECT OPTION SINGLE-PHASE POWER

20
Typical wiring schematics (cont)
BASE UNIT, THREE-PHASE POWER
MOTOR CONTROL/DISCONNECT OPTION THREE-PHASE POWER