Product
Data
50JX
Single-Packaged
Heat Pump
Units
2 to 5 Nominal Tons
Copyright 2002 Carrier Corporation Form 50JX-3PD
Single-Packaged Heat Pump for
Residential and Light Commercial
Applications
• Low Sound Levels
• 12 SEER
Features/Benefits
One-piece heat pump with optional
electric heater, low installation cost,
dependable performance and easy
maintenance.
Efficient operation
High-efficiency design
with SEERs
(Seasonal Energy Efficiency Ratios)
of 12.0 and HSPFs (Heating Seasonal
Performance Factors) of up to 7.2
Easy Installation
Factory-assembled package
is a
compact, fully self-contained, heat
pump unit that is pre-wired, pre-piped,
and pre-charged for minimum
installation expense. 50JX units are
available in a variety of standard
capacity ranges with voltage options to
meet residential and light commercial
requirements. Units install easily on a
rooftop or at ground-level.
Durable, dependable
components
Scroll Compressors
are designed for
high efficiency. Each compressor is
hermetically sealed against
contamination to help promote longer
life and dependable operation.
Vibration isolation provides quiet
operation. Compressors have internal
high-pressure and overcurrent
protection.
Direct-drive multi-speed, PSC
(permanent split capacitor) blower
motor
is standard on all 50JX models.
Direct-drive, PSC condenser-fan
motors
are designed to help reduce
energy consumption and provide for
cooling operation down to 40°F outdoor
temperature. Motormaster® II low
UNIT 50JX
(STANDARD)
2
ambient kit is available as a field-
installed accessory and does not require
a special motor.
Corporate thermostats
work with
Carrier’s small packaged products as a
system to promote year round comfort.
Refrigerant system
is designed to
provide dependability. Liquid refrigerant
strainers are used to promote clean,
unrestricted operation. Each unit leaves
the factory with a full refrigerant charge.
Refrigerant service connections make
checking operating pressures easier.
Low Pressure/Loss of Charge Switch
assures added safety and reliability for
the compressor.
Indoor and outdoor coils
are
computer-designed for optimum heat
transfer and cooling efficiency. The
indoor coil is fabricated from copper
tube and aluminum fins and is located
inside the unit for protection against
damage. The outdoor coil is internally
mounted on the top tier of the unit. A
FIOP (Factory-Installed Option) metal
louvered grille is available on all
models. Copper fin coils and pre-coated
fin coils are available from the factory
by special order. These coils are
recommended in applications where
aluminum fins are likely to be damaged
due to corrosion. They are ideal for
seacoast applications.
Low sound ratings
ensure a quiet
indoor and outdoor environment with
sound ratings as low as 72 dB.
(See page 3.)
Easy to service cabinets
provide easy
single-panel accessibility to serviceable
components during maintenance and
installation. The unit base with
integrated drain provides easy ground
level installation with or without a
mounting pad. Convenient handholds
are provided to manipulate the unit on
the jobsite. A nesting feature ensures a
positive unit base to roof curb seal when
the unit is roof mounted. A convenient
3/4-in. wide perimeter flange makes
frame mounting on a rooftop easy.
Downflow operation
is easily provided
in the field to allow vertical ductwork
connections. The unit base utilizes
knockout style seals on the bottom
openings to ensure a positive seal in the
horizontal airflow mode.
Standard metal duct covers
with
insulation come with the unit and cover
the duct openings. These can be left in
place if the units are converted to
downshot.
Cabinets
are constructed of heavy-
duty, phosphated, zinc-coated
prepainted steel capable of
withstanding 500 hours of salt spray.
Interior surfaces are insulated with
cleanable semi-rigid insulation board,
which keeps the conditioned air from
being affected by the outdoor ambient
temperature and provides improved
indoor air quality. (Conforms to
American Society of Heating,
Refrigeration and Air Conditioning
Engineers No. 62P.) The sloped drain
minimizes standing water in the drain,
which is provided with an external drain
fitting.
Short-Cycling protection
for the
compressor is incorporated into our
defrost control board ensuring a five
minute delay (+/-2 minutes) before
restarting compressor after shutdown
for any reason.
Table of contents
Page
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ARI Capacities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5,6
Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7,8
Accessory Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Performance Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-18
Typical Piping and Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21,22
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-25
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-28
3
Model number nomenclature
ARI* capacities
COOLING CAPACITIES AND EFFICIENCIES
50JX 024
Model No.
50JX – Single Packaged
Heat Pump
Nominal Cooling Capacity (Tons)
024
– 2
030
– 2-1/2
036
– 3
042
– 3-1/2
048
– 4
060
– 5
UNIT
50JX NOMINAL
TONS STANDARD
CFM
NET COOLING
CAPACITIES
(Btuh) SEER† SOUND
RATINGS‡
(dB)
024 2 800 23,200 12.0 72
030 2-1/2 1000 29,000 12.0 72
036 3 1200 35,000 12.0 77
042 3-1/2 1400 41,500 12.0 73
048 4 1450 47,000 12.0 79
060 5 1750 60,000 12.0 79
LEGEND
dB — Sound Levels (decibels)
COP — Coefficient of Performance
HSPF — Heating Season Performance Factor
db — Dry Bulb
SEER — Seasonal Energy Efficiency Ratio
wb — Wet Bulb
* Air Conditioning & Refrigeration Institute.
† Rated in accordance with U.S. Government DOE Department of
Energy) test procedures and/or ARI Standard 210/240-94.
‡ Tested in accordance with ARI Standard 270-95 (not listed in ARI).
NOTES:
1. Ratings are net values, reflecting the effects of circulating fan heat.
Ratings are based on:
Cooling Standard: 80°F db, 67°F wb indoor entering-air tempera-
ture and 95°F db outdoor entering-air temperature.
2. Before purchasing this appliance, read important energy cost and
efficiency information available from your retailer.
301AD
Options
(None)
– Wire Grille
AD
– Louvered Grille
BT
– Wire Grille and Vinyl-Coated Condenser
Coil Fin
XT
– Louvered Grille and Vinyl-Coated Con-
denser Coil Fin
CC
– Wire Grille, AL Evaporator and CU/CU
Condenser Coil
AC
– Louvered Grille, AL Evaporator and CU/
CU condenser Coil
AU
– Louvered Grille, CU/CU Evaporator and
Condenser Coils
Packaging
Series
V-Ph-Hz
3
– 208/230-1-60
5
– 208/230-3-60
6
– 460-3-60
TT
Options
- -
– Wire Grille
AD
– Louvered Grille
BT
– Wire Grille and vinyl-coated
outdoor coil fin
XT
– Louvered Grille and vinyl-coated
outdoor coil fin
CC
– Wire Grille, AL indoor and CU/CU
outdoor coil
CU
– Wire Grille, CU/CU indoor and
outdoor coils
AC
– Louvered Grille, AL indoor and
CU/CU outdoor coil
AU
– Louvered Grille, CU/CU indoor and
outdoor coils
AL
— Aluminum
CU
— Copper
HEATING CAPACITIES AND EFFICIENCIES
UNIT
50JX HIGH HEAT CAPACITY
(BTUH)@47°F HIGH HEAT COP
@47°F LOW HEAT CAPACITY
(BTUH)@17°F LOW HEAT COP
@17°F HSPF
024 22,400 3.2 13,000 2 7.1
030 28,200 3.2 15,600 2 7.1
036 34,000 3.2 19,000 1.9 7.1
042 40,000 3.2 22,000 2 7.2
048 44,000 3.1 23,600 2 7.1
060 57,000 3.2 32,000 2 7.2
4
OUTDOOR SOUND: OCTAVE BAND DATA—DECIBELS
Physical data
* Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.
UNIT 50JX
Frequency (Hz) 024 030 036 042 048 060
63
42.9 47.2 52.9 53.9 57.5 53.0
125
55.9 54.7 57.8 58.4 67.8 64.8
250
57.0 60.0 62.4 63.1 68.9 66.5
500
63.9 66.6 69.5 66.2 71.7 70.4
1000
66.8 67.0 72.3 66.8 72.7 73.2
2000
63.3 63.7 69.0 63.6 69.2 69.6
4000
59.0 59.5 65.4 59.9 65.7 67.1
8000
52.9 52.1 57.4 54.1 58.5 60.6
UNIT SIZE 50JX 024 030 036 042 048 060
NOMINAL CAPACITY (ton)
2 2-1/2 3 3-1/2 4 5
OPERATING WEIGHT (lb)
299 320 328 350 375 428
COMPRESSORS
Quantity (lb)
Scroll
1
REFRIGERANT (R-22)
Quantity (lb)
5.1 6.4 7.0 10.8 10.1 12.3
REFRIGERANT METERING DEVICE
Orifice Indoor (in.)
Orifice Outdoor (in.)
Accurater
0.065
0.073
0.076
0.080
0.088
0.093
OUTDOOR COIL
Rows—Fins/in.
Face Area (sq ft)
1—17
13.7
2—17
10.3
2—17
10.3
2—17
13.7
2—17
13.7
2—17
15.7
OUTDOOR FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
2350
22
1/8 (825)
2350
22
1/8 (825)
2800
22
1/4 (1100)
2800
22
1/8 (825)
3300
22
1/4 (1100)
3300
22
1/4 (1100)
INDOOR COIL
Rows—Fins/in.
Face Area (sq ft)
3—15
3.7
3—15
3.7
4—15
3.7
4—15
4.7
4—15
4.7
4—15
5.7
INDOOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Hp (RPM)
800
10 x 10
1/4 (1075)
1000
10 x 10
1/4 (1075)
1200
10 x 10
1/2 (1075)
1400
11 x 10
1/2 (1075)
1450
11 x 10
1/2 (1075)
1750
11 x 10
1.0 (1040)
RETURN-AIR FILTERS (in.)*
Throwaway
20 x 20 x 1 20 x 20 x 1 20 x 24 x 1 24 x 30 x 1 24 x 30 x 1 24 x 30 x 1
3
2
5
A
2
M
A
N
U
F
A
C
T
U
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R
C
E
R
T
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F
I
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D
T
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A
R
I
A
S
C
O
M
P
L
Y
I
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G
W
I
T
H
A
R
I
S
T
A
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D
A
R
D
2
4
0
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A
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A
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®
ELECTRIC HEAT PRESSURE DROP TABLES
Small Cabinet: 024-036
Large Cabinet: 042-060
STATIC CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600
5 Kw
0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07
10 Kw
0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.06 0.07 0.09 0.10 0.11
15 Kw
0.00 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18
20 Kw
0.00 0.00 0.02 0.04 0.06 0.08 0.09 0.11 0.13 0.15 0.17 0.19
STATIC CFM
1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500
5 Kw
0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12
10 Kw
0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13
15 Kw
0.00 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15
20 Kw
0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16
5
Factory-installed options
Louvered grille
provides hail and vandalism protection. A
wire grille is standard on all models. See model number
nomenclature for louvered grille options.
Coil options
include copper/copper and vinyl-coated
construction for refrigerant coils. Units are shipped standard
with copper tube/aluminum fin construction. See model
number nomenclature for coil options.
Field-installed accessories
Economizer with solid-state controls and barometric
relief dampers
includes filter racks and provide outdoor air
during cooling and reduce compressor operation.
Manual outside air damper
includes hood and filter rack with
adjustable damper blade for up to 25% outdoor air.
Electric heaters
provide additional heat in the unit when
required. Each package has a heater module that slides into
the controls compartment. Heater sizes range from 5.0 to
20.0 kW. The electric heater design allows the use of a
single-point power supply for the entire unit, resulting in
lower installed costs.
Flat roof curbs
in both 8 in. and 14 in. sizes are available for
roof mounted applications.
Square-to-round duct transition kit
enables 024-048 size
units to be fitted to 14 in. round ductwork.
Thermostats
provide control for the system heating and
cooling functions. Thermostat models are available in both
programmable and non-programmable versions.
Controls upgrade kit
supplies high and low pressure safety
protection and protects the unit from operating in unsuitable
conditions.
Crankcase heater
provides anti-floodback protection for
low-load cooling applications.
Rigging kit
includes lifting brackets which are inserted into
the unit base rigging holds to lift unit for rooftop
applications.
Low-ambient kit (Motormaster II control)
allows the use
of mechanical cooling down to outdoor temperatures as low
as 0°F.
Filter rack
features easy installation, serviceability, and
high-filtering performance for vertical and horizontal
applications.
Compressor Hard start kit
gives a boost to the compressor
motor at each start-up.
Economizer with Solid-State Controls and Barometric
Relief Dampers
Manual Air Damper (25% open)
Electric Heaters
Filter Rack
Flat Roof Curbs (8-in. and 14-in.)
Square-to-Round Duct Transition Kit
Thermostats
Controls Upgrade Kit
Crankcase Heater
Rigging Kit
Low Ambient Kit (Motormaster® II Control)
Solid-State Time Guard® II Device
Compressor Hard Start Kit
Options and accessories
ELECTRIC HEATERS
LEGEND
ODS — Order Distribution System
NOTE: Electric heaters are rated at 240 v and 480 v. Refer to Multiplication Factors table for other voltages.
*The 030 size models must be run on medium or high speed when used in conjunction with 15 Kw electric heat accessory.
ODS CATALOG
ORDERING NO. NOMINAL CAPACITY
(kW)
USED WITH SIZES
024 030 036 042 048 060
ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)
CPHEATER052A00
5.0 X X X X
CPHEATER064A00
5.0 XX
CPHEATER070A00
7.5 XXXXXX
CPHEATER050A00
10.0 X X X X X X
CPHEATER066A00
15.0 X X X X X
CPHEATER054A00
20.0 XXX
ELECTRIC HEATERS (208/230 — THREE PHASE — 60 Hz)
CPHEATER055A00
5.0 XXXXX
CPHEATER056A00
10.0 X X X X
CPHEATER068A00
10.0 X
CPHEATER058A00
15.0 X X X X X
CPHEATER067A00
20.0 XXX
ELECTRIC HEATERS (460 — THREE PHASE — 60 Hz)
CPHEATER060A00
5.0 X X X X
CPHEATER061A00
10.0 X X X X
CPHEATER062A00
15.0 X X X X
CPHEATER063A00
20.0 XXX
Minimum Airflow for Reliable Electric Heater Operation
UNIT-50JX 024 030 036 042 048 060
AIRFLOW 800 1000* 1200 1400 1600 2000
7
Base unit dimensions—50JX024-036
UNIT ELECTRICAL
CHARACTERISTICS
UNIT WEIGHT UNIT HEIGHT
mm (in.)
“A”
CENTER OF GRAVITY
mm (in.)
lb kg X Y Z
50JX024
208/230-1-60 299 135.6 1041.9 (41.02) 482.6 (19.0) 348.0 (13.7) 406.4 (16.0)
50JX030
208/230-1-60, 208/230-3-60 320 145.2 940.3 (37.02) 500.4 (19.7) 355.6 (14.0) 447.0 (17.6)
50JX036
208/230-1-60, 208/230-3-60, 460-3-60 328 148.8 940.3 (37.02) 500.4 (19.7) 355.6 (14.0) 419.1 (16.5)
8
Base unit dimensions—50JX042-060
UNIT ELECTRICAL
CHARACTERISTICS
UNIT WEIGHT UNIT HEIGHT
mm (in.)
“A”
CENTER OF GRAVITY
mm (in.)
lb kg X Y Z
50JX042
208/230-1-60, 208/230-3-60, 460-3-60 350 158.8 1040.9 (40.98) 505.5 (19.9) 398.8 (15.7) 421.6 (16.6)
50JX048
208/230-1-60, 208/230-3-60, 460-3-60 375 170.1 1040.9 (40.98) 505.5 (19.9) 398.8 (15.7) 457.2 (18.0)
50JX060
208/230-1-60, 208/230-3-60, 460-3-60 428 194.1 1091.7 (42.98) 505.5 (19.9) 398.8 (15.7) 447.0 (17.6)
9
Accessory dimensions
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied, as required, to unit being installed.
3. Dimensions in [ ] are in millimeters.
4. Roof curb is made of 16-gage steel.
5. Table lists only the dimensions, per part number, that have changed.
6. Attach ductwork to curb (flanges of duct rest on curb).
7. Insulated panels: 1-in. thick fiberglass 1 lb density.
8. Dimensions are in inches.
9. When unit mounting screw is used (see Note A), a retainer bracket
must be used as well. This bracket must also be used when required
by code for hurricane or seismic conditions. This bracket is available
through Micrometl.
Fi
g. 4—
R
oo
f
C
ur
b
Di
mens
i
ons
UNIT SIZE ODS CATALOG NO. A
in. [mm] B
in. [mm] C
in. [mm] D
in. [mm]
50JX024-036 CPRFCURB006A00 8 [203] 11[279] 16-1/2 [419] 28-3/4 [730]
CPRFCURB007A00 14 [356] 11[279] 16-1/2 [419] 28-3/4 [730]
50JX042-060 CPRFCURB008A00 8 [203] 16-3/16 [411] 17-3/8 [441] 40-1/4 [1022]
CPRFCURB009A00 14 [356] 16-3/16 [411] 17-3/8 [441] 40-1/4 [1022]
C00076
Gasket around
outer edge
Insulated
deck pan
Gasket around
duct
S/A
R/A
HVAC unit
base
*Gasketing
outer flange
Flashing field
supplied
Roofing material
field supplied
Cant strip
field supplied
*Provided with roofcurb
Roof
Duct work
field supplied
Insulation (field
supplied)
Roofcurb*
Wood nailer*
Gasketing
inner flange*
Screw
(NOTE A)
Roof Curb for Small Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
HVAC unit
base
*Gasketing
outer flange
Flashing field
supplied
Roofing material
field supplied
Cant strip
field supplied
*Provided with roofcurb
Roof
Duct work
field supplied
Insulation (field
supplied)
Roofcurb*
Wood nailer*
Gasketing
inner flange*
Screw
(NOTE A)
Roof Curb for Large Cabinet
Note A: When unit mounting screw is used,
retainer bracket must also be used.
A
B Typ.
Supply opening
(B x C)
Long
Support
D
44 5/16"
(1125.5mm)
Return opening
(B X C)
Insulated
deck pan
Short
Support
C Typ.
10
50JX Corner weights ( In Pounds)
I Determine cooling and heating requirements at design
conditions:
Given:
Required Cooling Capacity (TC). . . . . . . . . . 28,000 Btuh
Sensible Heat Capacity (SHC). . . . . . . . . . . . 20,500 Btuh
Required Heating Capacity . . . . . . . . . . . . . . 28,550 Btuh
Outdoor Entering Air Temperature . . . . . . . . . . . . . . 95°F
Outdoor-Air Winter Design Temperature . . . . . . . . . 20°F
Indoor-Air Winter Design Temperature . . . . . . . . . . 70°F
Indoor Entering-Air Temperature . . . . . . . . . . . .80°F edb
67°F ewb
Indoor-Air Quantity . . . . . . . . . . . . . . . . . . . . . . 1125 cfm
External Static Pressure . . . . . . . . . . . . . . . . . . 0.20 in. wg
Electrical Characteristics (V-Ph-Hz) . . . . . . . . . .230-1-60
edb — entering dry bulb
ewb — entering wet bulb
II Select unit based on required cooling capacity.
Enter Cooling Extended Performance table at outdoor
entering-air temperature of 95°F, indoor air entering at
1125 cfm and 67°F ewb (entering wet bulb). The unit will
provide a total cooling capacity of 30,900 Btuh and a
sensible heat capacity of 24,800 Btuh.
For indoor-air temperature other than 80°F edb (entering
dry bulb), calculate sensible heat capacity correction, as
required, using the formula found in Note 3 following the
cooling capacities tables. NOTE: Unit ratings are net
capacities.
III Select electric heat.
Enter the unit Heating Extended Performance table at 1125
cfm. At 70°F return indoor air and 20°F air entering
outdoor coil, the integrated heating capacity is 16,200 Btuh.
(Select integrated heating capacity value since deductions
for outdoor-coil frost and defrosting have already been
made. No correction is required.)
The required heating capacity is 28,550 Btuh. Therefore,
12,350 Btuh (28,550 – 16,200) additional electric heat is
required.
Determine additional electric heat capacity in kW.
12,350 Btuh
3414 Btuh/kW
Enter the Electric Heater table on page 5 for 208/230 v,
single-phase, unit. The 5-kW heater at 240 v most closely
satisfies the heating required. To calculate kW at 230 v,
multiply the heater kW by multiplication factor 0.92 found
in the Multiplication Factors table on page 17.
5 kW x 0.92 = 4.6 kW
4.6 kW x 3414 = 15,704 Btuh
Total unit heating capacity is 31,900 Btuh (16,200 +
15,704).
IV Determine fan speed and power requirements at design
conditions.
Before entering the air delivery tables, calculate the total
static pressure required.
= 3.6 kW of heat required
Selection Procedure (with example)
12
43
x
y
CORNER WEIGHTS (Small Cabinet) CORNER WEIGHTS (Large Cabinet)
Unit 24 30 36 —— Unit 42 48 60
Total Weight (lbs.) 299 320 328 —— Total Weight (lbs.) 350 375 428
Corner Weight 1 63 63 64 —— Corner Weight 1 75 81 92
Corner Weight 2 62 74 76 —— Corner Weight 2 49 52 60
Corner Weight 3 56 56 58 —— Corner Weight 3 95 102 116
Corner Weight 4 118 127 130 —— Corner Weight 4 131 140 160
Model 50JX
11
Performance data
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
*At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
See Legend and Notes on page 17.
50JX024 (2 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
700/0.02 800/0.02 900/0.05
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC
26.3 24.2 22.3 21.9 26.5 24.5 2.3 22.4 26.6 24.6 22.9 23.0
SHC
13.0 16.7 16.0 19.9 13.6 17.7 1.7 21.2 14.0 18.6 17.9 22.3
kW
1.9 1.9 1.9 1.9 2.0 2.0 2.0 2.0 2.1 2.1 2.0 2.0
95 TC
25.6 23.2 21.3 20.9 25.8 23.5 21.6 21.5 25.9 23.7 21.8 22.2
SHC
12.9 16.3 15.6 19.5 13.4 17.3 16.5 20.7 13.9 18.3 17.5 21.5
kW
2.1 2.1 21.1 2.1 2.2 2.2 2.2 2.2 2.3 2.3 2.2 2.2
105 TC
24.6 22.0 20.2 19.9 24.9 22.3 20.5 20.6 25.0 22.5 20.7 21.2
SHC
12.6 15.8 15.1 19.0 13.1 16.9 16.1 20.0 13.7 17.9 16.6 20.6
kW
2.4 2.4 2.3 2.3 2.4 2.4 2.4 2.4 2.5 2.5 2.5 2.5
115 TC
23.4 20.9 19.1 19.0 23.7 21.1 19.4 19.7 23.8 21.3 19.6 20.3
SHC
12.1 15.4 14.7 18.3 12.8 16.5 15.6 19.1 13.3 17.5 15.9 19.6
kW
2.6 2.6 2.3 2.6 2.7 2.7 2.6 2.6 2.8 2.8 2.7 2.7
50 JX024 (2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Ent Indoor Coil -10 0 10 17 20
60
700 TC
8.56 7.92 10.43 9.59 12.50 11.47 27.90 25.44 15.19 13.78
kW
1.61 1.68 1.75 1.78 1.82
800 TC
8.88 8.21 10.73 9.88 12.82 11.77 14.43 13.15 15.52 14.08
kW
1.68 1.74 1.81 1.83 1.87
900 TC
9.22 8.52 11.07 10.19 13.14 12.06 14.77 13.46 15.87 14.40
kW
1.77 1.82 1.87 1.91 1.95
70
700 TC
8.10 7.49 10.04 9.24 12.15 11.15 13.77 12.56 14.83 13.45
kW
1.73 1.83 1.91 1.96 2.00
800 TC
8.43 7.80 10.35 9.53 12.47 11.44 14.09 12.84 15.17 13.75
kW
1.80 1.89 1.96 2.00 2.04
900 TC
8.91 8.24 10.71 9.85 12.81 11.76 14.43 13.16 15.53 14.08
kW
1.85 1.97 2.04 2.07 2.11
80
700 TC
7.54 6.97 9.58 8.81 11.74 10.77 13.38 12.20 14.46 13.11
kW
1.85 1.97 2.08 2.16 2.19
800 TC
7.94 7.35 9.91 9.12 12.07 11.08 13.74 12.52 14.80 13.42
kW
1.91 2.03 2.13 2.19 2.23
900 TC
8.22 7.60 10.27 9.45 12.43 11.41 14.07 12.83 15.16 13.75
kW
2.01 2.11 2.20 2.27 2.30
50 JX024 (2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Ent Indoor Coil 30 40 47 50 60
60
700 TC
19.31 16.92 22.77 22.77 25.10 25.10 25.56 25.56 27.03 27.03
kW
1.94 2.07 2.12 2.14 2.17
800 TC
19.50 17.08 22.69 22.69 24.82 24.82 25.37 25.37 26.78 26.78
kW
1.97 2.08 2.13 2.14 2.17
900 TC
19.62 17.20 22.65 22.65 24.81 24.81 25.14 25.14 26.52 26.52
kW
2.03 2.13 2.19 2.19 2.22
70
700 TC
18.89 16.55 23.02 23.02 25.48 25.48 25.96 25.96 27.48 27.48
kW
2.15 2.28 2.38 2.39 2.45
800 TC
19.33 16.94 23.07 23.07 25.42 25.42 25.89 25.89 27.42 27.42
kW
2.18 2.29 2.38 2.38 2.43
900 TC
19.69 17.25 23.09 23.09 25.37 25.37 25.82 25.82 27.11 27.11
kW
2.24 2.35 2.41 2.42 2.46
80
700 TC
18.48 16.19 23.07 23.07 25.68 25.68 26.23 26.23 28.02 28.02
kW
2.38 2.54 2.65 2.68 2.74
800 TC
18.87 16.53 23.30 23.30 25.71 25.71 26.22 26.22 28.87 28.87
kW
2.40 2.53 2.64 2.65 2.70
900 TC
19.28 16.90 23.43 23.43 25.81 25.81 26.26 26.26 27.68 27.68
kW
2.45 2.57 2.67 2.68 2.71
12
Performance data (cont)
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
See Legend and Notes on page 17. *At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
50JX030 (2-1/2 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
875/0.05 1000/0.06 1125/0.08
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC
34.1 31.8 29.1 28.7 34.4 32.0 29.6 29.0 34.3 32.0 30.1 29.6
SHC
17.8 22.9 21.6 26.8 18.3 24.2 23.1 28.1 18.7 24.0 24.4 29.6
kW
2.36 2.37 2.39 2.36 2.45 2.47 2.50 2.44 2.57 2.59 2.59 2.54
95 TC
33.2 30.1 27.9 27.5 33.4 29.5 28.1 27.9 33.5 30.9 28.2 27.8
SHC
17.5 22.0 21.1 26.4 18.1 22.8 22.3 27.5 18.5 24.8 23.2 27.8
kW
2.67 2.69 2.68 2.64 2.76 2.78 2.79 2.72 2.88 2.89 2.90 2.82
105 TC
31.9 28.7 26.5 26.2 32.4 29.1 26.6 26.4 32.1 29.6 26.8 27.1
SHC
17.0 21.44 20.6 25.7 18.1 22.9 21.7 26.4 18.2 24.4 22.7 27.1
kW
3.01 3.02 3.00 2.95 3.07 3.12 3.09 3.03 3.23 3.21 3.20 3.13
115 TC
30.5 27.0 24.9 24.4 30.6 27.2 25.1 25.5 30.6 27.3 25.1 25.9
SHC
16.7 20.8 19.9 24.4 17.2 21.9 21.1 25.5 17.7 23.0 22.0 25.9
kW
3.38 3.36 3.33 3.28 3.48 3.46 3.43 3.37 3.59 3.56 3.55 3.48
50 JX030 (2-1/2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil -10 0 10 17 20
60
875 Cap.
9.33 8.58 11.76 10.82 12.89 11.86 16.26 14.96 17.29 15.91
kW
1.75 1.82 1.70 1.92 1.94
1000 Cap.
9.69 8.92 12.27 11.29 15.02 13.82 16.62 15.29 17.78 16.36
kW
1.82 1.87 1.90 1.98 2.02
1125 Cap.
10.11 9.31 12.74 11.72 15.47 14.23 17.13 15.76 18.11 16.66
kW
1.99 1.95 1.99 2.05 2.05
70
875 Cap.
6.14 5.65 11.04 10.16 13.93 12.81 16.58 15.26 16.72 15.38
kW
1.99 1.97 2.01 2.48 2.09
1000 Cap.
8.82 8.11 11.58 10.66 14.36 13.21 16.38 15.06 17.13 15.75
kW
1.96 2.03 2.09 2.13 2.16
1125 Cap.
9.32 8.58 11.94 10.99 14.84 13.66 16.85 15.51 17.61 16.20
kW
2.06 2.08 2.18 2.22 2.24
80
875 Cap.
7.35 6.76 10.12 9.31 12.67 11.66 15.23 14.01 16.17 14.88
kW
2.04 2.16 2.22 2.28 2.30
1000 Cap.
7.74 7.13 10.71 9.86 13.44 12.37 15.71 14.46 16.68 15.35
kW 2.13 2.23 2.19 2.33 2.34
1125 Cap. 8.22 7.56 11.07 10.18 14.06 12.94 16.24 14.94 17.20 15.83
kW 2.24 2.32 2.39 2.42 2.43
50 JX030 (2-1/2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil 30 40 47 50 60
60
875 Cap. 20.22 18.60 25.04 25.04 28.62 28.62 29.88 29.88 34.18 34.18
kW 1.95 1.86 2.07 2.08 2.13
1000 Cap. 20.67 19.02 26.18 26.18 28.82 28.82 30.02 30.02 34.84 34.84
kW 1.98 2.04 2.07 2.09 2.12
1125 Cap. 21.16 19.47 26.52 26.52 29.60 29.60 30.04 30.04 34.89 34.89
kW 2.06 2.11 2.06 2.13 2.14
70
875 Cap. 19.95 18.35 25.29 25.29 28.10 18.68 29.32 29.31 33.61 33.61
kW 2.23 2.25 2.30 2.34 2.40
1000 Cap. 20.16 18.55 25.80 25.79 28.37 28.37 29.57 29.57 33.62 33.62
kW 2.23 2.29 2.32 2.34 2.38
1125 Cap. 20.55 18.91 26.12 26.12 28.59 28.59 29,70 29.70 33.74 33.74
kW 2.31 2.34 2.37 2.39 2.40
80
875 Cap. 19.18 17.65 24.91 24.91 27.49 27.49 28.74 28.74 33.00 33.00
kW 2.40 2.52 2.59 2.60 2.68
1000 Cap. 19.46 17.91 25.31 25.31 27.93 27.93 29.09 29.09 33.18 33.18
kW 2.46 2.54 2.61 2.61 2.67
1125 Cap. 19.93 18.34 25.73 25.73 28.25 28.25 29.41 29.41 33.15 33.15
kW 2.52 2.61 2.63 2.66 2.70
13
Performance data (cont)
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
See Legend and Notes on page 17. *At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
50JX036 (3 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
1050/0.11 1200/0.14 1350/0.18
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC 37.4 35.2 33.4 32.3 37.8 35.8 34.2 33.7 38.5 36.2 34.6 34.2
SHC 19.1 25.1 25.0 30.3 19.9 26.7 26.7 32.7 20.9 28.0 28.1 34.2
kW 3.18 3.15 3.13 3.12 3.19 3.16 3.14 3.13 3.20 3.17 3.14 3.14
95 TC 37.1 34.7 30.4 29.2 37.6 35.2 32.6 31.7 38.0 35.7 33.1 32.4
SHC 19.2 25.4 22.5 27.5 20.2 27.1 26.0 30.5 21.1 28.7 27.7 32.4
kW 3.48 3.44 3.33 3.30 3.49 3.45 3.41 3.38 3.40 3.46 3.42 3.39
105 TC 36.2 32.5 28.0 27.7 36.8 33.7 29.7 28.5 37.1 34.1 31.3 31.2
SHC 19.0 24.1 20.9 26.5 20.1 26.5 23.0 28.5 21.1 28.3 26.7 31.2
kW 3.78 3.69 3.54 3.54 3.80 3.74 3.61 3.56 3.80 3.76 3.66 3.62
115 TC 34.7 29.5 26.6 27.2 35.4 31.5 27.5 26.6 35.8 32.1 28.2 27.5
SHC 18.6 22.0 20.4 26.3 19.9 25.4 22.4 26.6 20.9 27.3 24.5 27.5
kW 4.09 3.89 3.81 3.78 4.11 3.98 3.82 3.80 4.11 4.00 3.85 3.83
50 JX036 (3 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil -10 0 10 17 20
60
1050 TC 8.92 8.25 11.90 11.01 16.46 15.22 18.09 16.73 18.82 17.40
kW 2.15 2.25 2.36 2.43 2.46
1200 TC 9.67 8.94 15.19 14.05 17.32 16.01 18.88 17.46 19.62 18.15
kW 2.33 2.35 2.49 2.56 2.60
1350 TC 10.23 9.46 15.98 14.78 18.08 16.72 19.64 18.16 20.39 18.85
kW 2.55 2.55 2.65 2.73 2.76
70
1050 TC 6.60 6.11 13.40 12.40 15.70 14.52 17.40 16.09 18.13 16.77
kW 2.25 2.35 2.50 2.59 2.62
1200 TC 8.18 7.57 14.12 13.06 16.69 15.44 18.28 16.90 19.06 17.63
kW 2.46 2.54 2.64 2.72 2.76
1350 TC 9.11 8.43 10.80 9.99 17.50 16.19 19.09 17.65 19.82 18.33
kW 2.46 2.55 2.81 2.89 2.93
80
1050 TC 6.31 5.83 9.72 8.99 14.64 13.54 16.52 15.28 17.34 16.03
kW 2.39 2.51 2.68 2.74 2.77
1200 TC 6.84 6.32 13.07 12.09 15.68 14.50 17.69 16.36 18.34 16.96
kW 2.57 2.69 2.82 2.86 2.91
1350 TC 8.22 7.61 11.65 10.77 16.59 15.34 18.42 17.04 19.19 17.75
kW 2.80 2.89 3.00 3.06 3.09
50 JX036 (3 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil 30 40 47 50 60
60
1050 TC 20.96 29.39 31.09 31.09 33.90 33.90 35.17 35.17 39.37 39.37
kW 2.60 2.55 2.66 2.73 2.92
1200 TC 21.86 20.22 31.69 31.69 34.41 34.41 35.57 35.57 39.77 39.77
kW 2.72 2.61 2.72 2.77 2.93
1350 TC 22.69 20.98 32.29 32.29 34.81 34.81 35.93 35.93 40.18 40.18
kW 2.88 2.74 2.85 2.88 2.97
70
1050 TC 20.12 18.61 30.63 30.63 33.55 33.55 34.81 34.81 39.17 39.17
kW 2.74 2.71 2.87 2.93 3.14
1200 TC 21.06 19.47 31.35 31.35 34.20 34.20 35.47 35.47 39.37 39.37
kW 2.88 2.90 2.93 3.00 3.16
1350 TC 21.91 20.27 32.10 32.10 34.77 34.77 35.80 35.80 39.55 39.55
kW 3.06 2.96 3.07 3.13 3.26
80
1050 TC 19.93 18.43 29.99 29.99 33.00 33.00 34.36 34.36 38.68 38.68
kW 2.94 2.91 3.06 3.14 3.39
1200 TC 20.22 18.70 31.26 31.26 33.87 33.87 35.11 35.11 39.22 39.22
kW 3.04 3.10 3.16 3.22 3.41
1350 TC 21.11 19.52 31.80 31.80 34.60 34.60 35.79 35.79 39.46 39.46
kW 3.22 3.16 3.29 3.34 3.54
14
Performance data (cont)
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
See Legend and Notes on page 17. *At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
50 JX042 (3-1/2 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
1225/0.06 1400/0.06 1575/0.07
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC 46.7 42.8 40.2 39.4 47.1 43.2 40.2 40.1 47.2 43.3 40.2 40.8
SHC 24.3 30.7 31.3 37.3 25.1 32.5 32.8 39.6 25.7 33.9 34.4 40.8
kW 3.43 3.40 3.53 3.31 3.58 3.54 3.72 3.41 3.75 3.71 3.92 3.52
95 TC 45.1 41.0 38.1 37.4 45.4 41.5 38.2 38.7 45.4 41.5 38.1 39.7
SHC 23.7 29.9 30.1 36.1 24.5 31.8 31.8 38.7 25.2 33.3 33.2 39.7
kW 3.78 3.74 3.83 3.60 3.94 3.91 4.02 3.69 4.12 4.07 4.25 3.86
105 TC 43.5 38.8 35.9 35.6 43.5 39.2 35.9 36.8 43.5 39.4 35.8 37.9
SHC 23.3 28.7 29.1 35.4 23.9 30.6 30.6 36.8 24.7 32.3 32.0 37.9
kW 4.17 4.07 4.13 3.91 4.33 4.24 4.33 4.03 4.51 4.40 4.56 4.20
115 TC 41.0 36.6 33.8 34.0 41.2 36.9 33.8 35.2 41.3 36.9 33.7 35.9
SHC 22.1 27.9 28.3 34.0 23.0 29.6 29.8 35.2 23.7 31.1 31.3 35.9
kW 4.59 4.44 4.50 4.26 4.75 4.58 4.70 4.42 4.94 4.76 4.90 4.57
50 JX042 (3-1/2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil -10 0 10 17 20
60
1225 TC 12.32 11.34 16.82 15.48 20.83 19.16 24.26 22.33 25.64 23.60
kW 2.38 2.50 2.61 2.68 2.71
1400 TC 13.56 12.47 17.91 16.48 21.69 19.96 25.15 23.14 26.50 24.38
kW 2.56 2.66 2.74 2.80 2.84
1575 TC 15.37 14.14 19.47 17.91 22.32 20.54 25.76 23.71 27.08 24.92
kW 2.71 2.80 2.89 2.91 2.96
70
1225 TC 10.27 9.45 15.14 13.93 19.86 18.27 23.10 21.25 24.51 22.55
kW 2.55 2.70 2.86 2.93 2.97
1400 TC 11.36 10.45 16.19 14.89 20.55 18.91 24.03 22.11 25.46 23.42
kW 2.72 2.85 2.99 3.06 3.08
1575 TC 11.80 10.85 16.48 15.17 21.17 19.47 24.68 22.70 26.09 24.00
kW 2.86 2.97 3.11 3.18 3.20
80
1225 TC 7.25 6.67 12.43 11.44 18.54 17.06 21.87 20.12 23.20 21.35
kW 2.73 2.90 3.10 3.22 3.25
1400 TC 8.50 7.82 13.58 12.49 18.39 16.92 22.84 21.02 24.21 22.27
kW 2.96 3.10 3.19 3.35 3.38
1575 TC 9.12 8.39 14.20 13.06 18.85 17.35 23.51 21.63 24.90 22.91
kW 3.09 3.21 3.34 3.47 3.49
50 JX042 (3-1/2 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil 30 40 47 50 60
60
1225 TC 30.15 27.74 36.33 36.33 38.87 38.87 39.69 39.69 42.11 42.11
kW 2.88 3.00 3.12 3.15 3.24
1400 TC 31.06 28.58 37.25 37.25 39.30 39.30 40.14 40.14 42.28 42.28
kW 3.00 3.12 3.18 3.21 3.28
1575 TC 31.68 29.15 37.83 37.83 39.73 39.73 40.47 40.47 42.54 42.54
kW 3.12 3.19 3.26 3.28 3.35
70
1225 TC 29.23 26.89 35.41 35.41 39.11 39.11 40.46 40.46 43.21 43.21
kW 3.10 3.24 3.46 3.49 3.62
1400 TC 30.16 27.75 36.46 36.46 40.08 40.08 41.02 41.02 43.67 43.67
kW 3.23 3.40 3.51 3.55 3.65
1575 TC 30.81 28.35 37.01 37.01 40.58 40.58 41.43 41.43 44.00 44.00
kW 3.34 3.42 3.59 3.63 3.72
80
1225 TC 28.04 25.80 34.82 34.82 38.24 38.24 39.84 39.84 43.96 43.96
kW 3.38 3.51 3.66 3.75 4.01
1400 TC 29.09 26.76 35.72 35.72 39.31 39.31 41.00 41.00 44.55 44.55
kW 3.49 3.61 3.81 3.86 4.03
1575 TC 29.79 27.41 36.41 36.41 39.95 39.95 41.72 41.72 45.08 45.08
kW 3.61 3.70 3.93 3.98 4.11
15
Performance data (cont)
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
See Legend and Notes on page 17. *At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
50 JX048 (4 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
1400/0.07 1600/0.07 1800/0.08
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC 52.8 48.7 45.2 44.5 53.0 48.9 45.5 45.5 52.9 49.0 45.6 46.4
SHC 25.2 32.5 31.3 39.2 26.0 34.1 33.0 41.2 26.5 35.6 34.5 41.8
kW 4.0 4.0 3.9 3.9 4.2 4.2 4.1 4.0 4.4 4.3 4.3 4.1
95 TC 51.1 46.9 43.0 42.9 51.3 47.1 43.6 44.0 51.2 47.2 43.7 44.9
SHC 24.7 32.0 29.9 38.4 25.5 33.7 32.2 39.8 26.3 35.3 33.6 40.9
kW 4.4 4.4 4.3 4.2 4.6 4.6 4.5 4.3 4.8 4.7 4.6 4.5
105 TC 49.3 44.8 41.3 41.1 49.4 45.0 41.7 42.3 49.3 45.0 41.7 43.3
SHC 24.2 31.3 29.8 37.2 25.1 33.1 31.6 38.4 25.8 34.8 32.9 39.1
kW 4.9 4.8 4.7 4.6 5.1 5.0 4.8 4.7 5.3 5.2 5.0 4.9
115 TC 47.1 42.5 39.2 39.5 47.3 42.7 39.5 40.5 47.2 42.8 39.4 41.3
SHC 23.6 30.5 28.9 35.8 24.5 32.3 30.6 37.2 25.2 34.0 32.1 38.1
kW 5.4 5.2 5.1 5.0 5.6 5.4 5.2 5.2 5.8 5.6 5.4 5.3
50 JX048 (4 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil -10 0 10 17 20
60
1400 TC 13.75 12.72 18.17 16.72 22.58 20.73 27.90 25.44 27.16 24.63
kW 2.60 2.85 3.11 3.29 3.33
1600 TC 14.56 13.47 18.93 17.42 23.29 21.38 26.35 24.02 27.70 25.12
kW 2.97 3.16 3.36 3.49 3.49
1800 TC 15.63 14.45 19.92 18.33 24.21 22.23 27.22 24.82 28.47 25.82
kW 3.21 3.37 3.54 3.65 3.65
70
1400 TC 12.18 11.26 16.85 15.50 21.52 19.75 24.79 22.61 26.48 24.02
kW 2.80 3.10 3.39 3.59 3.65
1600 TC 13.21 12.22 17.80 16.38 22.40 20.56 25.61 23.35 27.15 24.62
kW 2.98 3.23 3.49 3.67 3.71
1800 TC 14.52 13.43 19.01 17.49 23.49 21.56 26.63 24.28 28.14 25.52
kW 3.32 3.53 3.74 3.89 3.91
80
1400 TC 12.79 11.83 18.22 16.77 21.89 20.10 24.67 22.49 25.82 23.42
kW 2.98 3.40 3.66 3.82 3.92
1600 TC 13.91 12.87 18.97 17.45 22.71 20.84 25.37 23.13 27.38 24.84
kW 3.16 3.52 3.74 3.89 4.01
1800 TC 14.60 13.51 19.52 17.96 23.05 21.15 26.58 24.23 28.08 25.46
kW 3.52 3.75 4.04 4.18 4.22
50 JX048 (4 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil 30 40 47 50 60
60
1400 TC 32.14 28.16 37.41 37.41 41.34 41.34 42.95 42.95 47.11 47.11
kW 3.51 3.56 3.73 3.79 4.00
1600 TC 32.85 28.79 38.08 38.08 42.03 42.03 43.43 43.43 47.50 47.50
kW 3.58 3.83 3.71 3.77 3.94
1800 TC 33.66 29.49 39.03 39.03 42.66 42.66 44.04 44.04 48.07 48.07
kW 3.73 3.78 3.82 3.83 3.96
70
1400 TC 31.48 27.58 37.06 37.06 41.24 41.24 42.79 42.79 47.50 47.50
kW 3.82 3.98 4.09 4.17 4.44
1600 TC 32.28 28.29 37.84 37.84 41.89 41.89 43.41 43.41 47.87 47.87
kW 3.84 3.98 4.06 4.14 4.35
1800 TC 33.18 29.08 38.65 38.65 42.65 42.65 44.09 44.09 48.47 48.47
kW 3.98 4.08 4.15 4.21 4.35
80
1400 TC 30.84 27.03 36.31 36.31 40.68 40.68 42.36 42.36 47.65 47.65
kW 4.12 4.43 4.49 4.61 4.90
1600 TC 32.48 28.46 37.20 37.20 41.55 41.55 42.96 42.96 48.21 48.21
kW 4.18 4.31 4.43 4.51 4.81
1800 TC 33.19 29.08 38.12 38.12 42.37 42.37 43.55 43.55 48.77 48.77
kW 4.33 4.42 4.50 4.52 4.81
16
Performance data (cont)
COOLING EXTENDED PERFORMANCE TABLE
HEATING EXTENDED PERFORMANCE TABLE -10–20
HEATING EXTENDED PERFORMANCE TABLE 30–60
See Legend and Notes on page 17. *At 75°F entering dry bulb—Tennessee Valley Authority [TVA] rating conditions; all others at 80°F entering dry bulb.
50 JX060 (5 TONS)
Temp (F)
Air Ent
Outdoor Coil
(Edb)
Indoor Entering Air—CFM/BF
1750/0.07 2000/0.12 2250/0.15
Indoor Entering Air—Ewb (F)
72 67 63* 62 72 67 63* 62 72 67 63* 62
85 TC 67.9 61.8 56.5 55.5 68.9 63.3 57.9 57.2 69.6 64.4 59.1 59.0
SHC 35.1 44.4 42.2 52.5 36.8 47.7 45.2 56.4 38.4 50.7 48.2 59.0
kW 5.25 5.22 5.16 5.15 5.27 5.22 5.19 5.18 5.28 5.22 5.22 5.22
95 TC 65.3 59.0 53.4 52.5 66.5 59.8 54.7 54.3 67.3 61.1 55.8 56.3
SHC 34.3 43.3 40.8 50.9 36.2 46.1 43.8 54.3 38.0 49.5 46.7 56.3
kW 5.78 5.74 5.63 5.61 5.78 5.77 5.66 5.66 5.79 5.76 5.69 5.70
105 TC 62.8 55.2 50.5 49.5 64.0 57.1 51.5 51.6 64.1 57.5 52.5 53.7
SHC 33.6 41.5 39.7 49.4 35.6 45.3 42.4 51.6 36.9 47.9 45.3 53.7
kW 6.34 6.27 6.21 6.14 6.36 6.32 6.18 6.19 6.35 6.35 6.21 6.24
115 TC 58.7 52.3 46.9 47.1 59.9 53.1 48.1 49.0 60.7 54.1 49.4 50.9
SHC 31.8 40.6 38.0 47.1 33.9 43.4 40.9 49.0 35.8 46.5 44.3 50.9
kW 6.94 6.78 6.72 6.64 6.95 6.90 6.75 6.77 6.96 6.94 6.69 6.82
50 JX060 (5 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil -10 0 10 17 20
60
1750 TC 22.7 21.0 27.8 25.6 33.3 30.5 36.6 33.4 39.4 35.7
kW 3.82 4.08 4.15 4.21 4.27
2000 TC 23.2 21.4 28.5 26.3 33.5 30.9 36.8 33.6 40.0 36.3
kW 3.81 3.94 4.12 4.17 4.21
2250 TC 23.4 21.6 28.6 26.3 33.8 31.1 37.2 33.9 40.5 36.7
kW 3.79 3.92 4.04 4.10 4.15
70
1750 TC 21.1 19.5 26.4 24.3 32.8 30.1 35.8 32.6 38.8 35.2
kW 4.02 4.27 4.48 4.55 4.63
2000 TC 21.3 19.7 27.3 25.1 32.9 30.2 36.0 32.8 39.1 35.5
kW 4.01 4.26 4.42 4.49 4.57
2250 TC 21.5 19.9 28.4 26.1 33.1 30.4 36.2 33.0 39.3 35.7
kW 4.00 4.21 4.49 4.49 4.50
80
1750 TC 18.1 16.7 21.1 19.4 32.2 29.5 35.1 32.0 38.0 34.4
kW 4.12 4.48 4.83 4.94 5.05
2000 TC 18.3 16.9 22.7 20.9 31.9 29.3 34.9 31.8 38.0 34.4
kW 4.11 4.47 4.77 4.88 4.98
2250 TC 18.5 17.1 25.4 23.4 30.8 28.3 35.1 32.0 39.3 35.7
kW 4.11 4.48 4.69 4.82 4.95
50 JX060 (5 TONS)
Temp (F) Indoor Air Cfm (std) Air Temperature Entering Outdoor Coil (F db at 70% rh)
Air Ent Indoor Coil 30 40 47 50 60
60
1750 TC 46.1 40.4 52.8 52.8 57.7 57.7 59.4 59.4 64.8 64.8
kW 4.39 4.57 4.62 4.66 4.79
2000 TC 46.7 40.9 53.0 53.0 57.5 57.5 59.1 59.1 64.1 64.1
kW 4.35 4.41 4.50 4.53 4.64
2250 TC 46.7 40.9 52.9 52.9 57.3 57.3 58.6 58.6 63.3 63.3
kW 4.27 4.32 4.41 4.43 4.53
70
1750 TC 45.3 39.7 52.5 52.5 57.2 57.2 59.3 59.3 65.0 65.0
kW 4.81 5.04 5.05 5.09 5.24
2000 TC 45.8 40.1 52.5 52.5 57.3 57.3 59.3 59.3 64.5 64.5
kW 4.76 4.93 4.92 4.96 5.08
2250 TC 45.8 40.2 52.3 52.3 57.4 57.4 59.1 59.1 64.1 64.1
kW 4.65 4.82 4.82 4.85 4.96
80
1750 TC 44.2 38.8 51.2 51.2 56.1 56.1 58.6 58.6 65.0 65.0
kW 5.21 5.51 5.56 5.57 5.73
2000 TC 44.2 38.8 52.1 52.1 56.5 56.5 58.8 58.8 64.9 64.9
kW 5.09 5.39 5.40 5.43 5.57
2250 TC 44.3 38.8 51.6 51.6 56.7 56.7 58.9 58.9 64.7 64.7
kW 4.87 5.32 5.29 5.32 5.45
17
Performance data (cont)
ECONOMIZER 1-in. FILTER PRESSURE DROP (in. wg)
MULTIPLICATION FACTORS
Example: 20 kW (at 240v) heater on 230v
= 20.0 (.92 mult factor)
= 18.4 kW capacity at 230 v
LEGEND
BF—Bypass Factor
Ewb—Entering Wet-Bulb
kW—Total Unit Power Input
SHC—Sensible Heat Capacity (1000 Btuh)
TC—Total Capacity (1000 Btuh) (net)
Edb—Entering Dry-Bulb
rh—Relative Humidity
Indicates Integrated Ratings
UNIT50JX PRESSURE DROP
024-036 0.20
042-060 0.25
HEATER kW
RATING
VOLTAGE
DISTRIBUTION
V/3/60
MULTIPLICATION
FACTOR
240
200
208
230
240
.69
.75
.92
1.00
480 440
460
480
.84
.92
1.00
4. The SHC is based on 80 F edb temperature of air entering evaporator coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
5. Integrated capacity is maximum (instantaneous) capacity less the effect of frost
on the outdoor coil and the heat required to defrost it.
NOTES:
1. Ratings are net; they account for the effects of the evaporator-fan motor power
and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
C00093
Balance Point Worksheet
0
10
20
30
40
50
60
70
-100 1017203040475060
Outdoor Air Temp (Deg F)
024
030
036
042
048
060
Based on Indoor Entering Air of 70 F and Rated CFM
Building Heat Loss, 1000BTUH
Unit Integrated Heating Capacity (x1000BTUH)
sensible capacity (Btuh)
t=t
ldb edb 1.10 x cfm
t = Wet-bulb temperature corresponding to enthalpy of air leaving
lwb evaporator coil (h )
lwb
total capacity (Btuh)
h=h
lwb ewb 4.5 x cfm
Where: h = Enthalpy of air entering evaporator coil
ewb
18
WET COIL AIR DELIVERY UNIT 50JX024-060*
*Air delivery values are based on operating voltage of 230 v or 460 v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure
drops to obtain static pressure available for ducting.
NOTES:
1.Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may
occur at airflows below this point.
2.Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended.
3.Deduct 10% for 208v.
FILTER PRESSURE DROP (In. wg)
Unit
50JX Motor Speed External Static Pressure (in.wg)
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
024
Low Watts 275 273 271 270 ———————
Cfm 923 844 754 669 ———————
Med Watts ———359 353 350 347 341 ———
Cfm ———941 876 814 737 622 ———
High Watts ——————447 439 431 423 —
Cfm ——————968 869 765 659 —
030
Low Watts 276 276 272 ————————
Cfm 963 929 781 ————————
Med Watts 375 377 371 362 354 350 —————
Cfm 1202 1170 1079 976 884 807 —————
High Watts ————469 449 435 428 ———
Cfm ————1174 988 828 718 ———
036
Low Watts 462 451 431 411 394 381 —————
Cfm 1374 1290 1205 1116 1020 916 —————
Med Watts 523 506 490 471 449 426 —————
Cfm 1500 1408 1301 1190 1082 977 —————
High Watts —645 628 610 595 584 575 ————
Cfm —1474 1369 1267 1169 1069 962 ————
042
Low Watts 620 600 586 574 562 548 530 510 487 462 439
Cfm 1662 1621 1581 1540 1496 1447 1392 1331 1263 1186 1103
Med Watts ————686 661 634 606 577 547 517
Cfm ————1722 1662 1594 1515 1427 1330 1227
High Watts ———————757 730 704 682
Cfm ———————1669 1577 1486 1402
048
Low Watts 620 600 586 574 562 548 530 510 487 ——
Cfm 1662 1621 1581 1540 1496 1447 1392 1331 1263 ——
Med Watts 763 747 729 709 686 661 634 606 577 547 517
Cfm 1917 1868 1822 1774 1722 1662 1594 1515 1427 1330 1227
High Watts ———852 832 809 784 757 730 704 682
Cfm ———1982 1914 1839 1757 1669 1577 1486 1402
060
Low Watts 597 592 578 526 460 452 445 ————
Cfm 2265 2190 2101 2033 1974 1869 1614 ————
Med Watts 754 730 707 687 671 658 646 630 603 558 486
Cfm 2383 2282 2202 2134 2070 2005 1935 1858 1771 1667 1576
High Watts 901 876 856 836 813 785 755 723 696 687 681
Cfm 2480 2383 2301 2233 2175 2122 2066 1998 1910 1788 1619
UNIT SIZE
50JX FILTER SIZE CFM
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
024, 030 20 X 20 X 1 0.05 0.07 0.08 0.10 0.12 0.13 0.14 0.15 ———————————
36 20 X 24 X 1 ————0.09 0.10 0.11 0.13 0.14 0.15 0.16 ————————
042, 048, 060 24 X 30 X 1 ———————0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18
20
Condensate trap — A 2-in. condensate trap must be field
supplied.
Ductwork — Secure downflow discharge ductwork to roof
curb. For horizontal discharge applications, attach ductwork
to unit with flanges.
To convert a unit to downflow discharge — Units are
equipped with factory-installed inserts in the downflow
openings. Remove the inserts similar to removing an
electrical knock-out.
Maximum cooling airflow — To minimize the possibility
of condensate blow-off from the evaporator, airflow
through the units should not exceed 450 cfm/ton.
Minimum cooling airflow — The minimum cooling
airflow is 350 cfm/ton.
Minimum cooling ambient operating temperature — All
standard units have a minimum ambient operating
temperature of 40°F. With accessory low ambient temperature
kit, units can operate at temperatures down to 0°F.
Application data
1” MIN.
2” MIN.
TRAP
OUTLET
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Carrier 50JX Series Product information
- Category
- Heat pumps
- Type
- Product information
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