48/50HJ SERIES
®
High-Efficiency
Weathermaster Rooftops
™
3-12.5 TONS
INDUSTRY-LEADING EFFICIENCY AND PERFORMANCE
High Efficiency, Quiet Operation, Powerful Control:
The Weathermaster™ 48/50HJ Series.
Smaller, one-story buildings like schools and restaurants typically
have smaller operating budgets to match. Yet their heating,
cooling, and ventilation needs are significant, whether they house
classrooms or health clubs, offices or steaming kitchens.
That’s why the 48/50HJ Series of Carrier Weathermaster rooftops
is ideal for these applications. Quite simply, the HJ Series features
some of the highest efficiencies in the industry. It’s quiet, too, and
is available with powerful direct digital controls.
So, in addition to lower operating costs, the 48/50HJ Series
delivers finely tuned temperature, humidity, and air quality.
Unobtrusive sound levels. More comfortable, more productive
tenants. And satisfied customers.
Top-Line Efficiency, Bottom-Line Savings.
We designed the 48/50HJ Series rooftops around you, and your
demands for a high-efficiency HVAC system for smaller buildings.
That means everything about them, from the compressor to
the features that help lighten its load, is high-performance —
engineered to save you money.
A wide range of rooftop sizes lets you choose the capacity that will
operate most efficiently and cost-effectively for your space. Inside,
you’ll find reliable, fully hermetic scroll compressor technology
that maximizes efficiency as it minimizes service and maintenance
expense — day after day, year after year.
Increasing energy efficiency and rooftop performance even further
is a wide range of options:
Take advantage of free cooling provided
by outside air with Carrier’s Economi$er™, an
advanced, high-performance damper control
system. Gear-driven, it has no linkage to bind,
so there’s no economizer-related downtime.
MoistureMi$er™, our exclusive, patented dehumidification
technology, creates a comfortable, healthy environment while it
helps protect buildings and computer systems from damage
caused by excess humidity — a real plus in restaurant kitchens
and school cafeterias.
With its self-contained refrigeration system, MoistureMi$er cools
supply air well below normal temperatures, then reheats the air to
prevent overcooling, increasing latent capacity and reducing up to
40 percent more moisture.
For the highest latent capacity in a small rooftop, combine
MoistureMi$er with Energy$Recycler™.
Energy$Recycler adds another stage of heating and cooling to
vertically ducted units. It takes in cooler exhaust air, then cools
and dehumidifies the air before it enters the rooftop, recovering
energy while providing needed
ventilation.
Besides being an
ideal dehumidification solution for
high-latent loads,
Energy$Recycler
enhances rooftop
performance,
allowing you to
downsize tonnage.
And because the rooftop
operates efficiently at less than full capacity, you can utilize
Carrier’s part-load strategy for a total system cost advantage.
Energy$Recycler is available in a range of capacities (600, 1000,
2000, 3000 cfm). Easier to install and maintain than an energy
recovery wheel, it mounts with an accessory kit that requires no
additional curb support, reducing installation costs.
Power exhaust replaces the standard exhaust hood to
reduce zone pressurization and increase fresh air circulation.
The two-stage fan
system is another
easy-to-install way
to optimize rooftop
performance.
A Sound Choice for Happier,
More Productive Tenants.
Students, office workers, and customers shouldn’t be distracted by
noisy air conditioning systems. On the 48/50HJ Series, inherently
quiet scroll compressors are equipped with internal vibration
isolators and mounted on independent plates for additional sound
integrity. Together with efficient condenser fan and motor designs,
they allow the rooftop to operate quietly and unobtrusively.
The Power to Control and Communicate.
A Durable, Long-Term Investment.
Like all Weathermaster rooftops, the 48/50HJ Series is designed
to stand up to the harshest conditions, for years of trouble-free
operation.
Available on the 48/50HJ Series rooftops is PremierLink™, a
powerful direct digital control system that is simple to use, yet
offers advanced capabilities that help maintain comfort and
contain costs.
Not only is it fully compatible with Carrier Comfort Network
building-wide controls, PremierLink can also be Internet-ready for
control from a remote location. It communicates with Economi$er
and carbon dioxide sensors as well, to provide demand controlled
ventilation (DCV) and compliance with ASHRAE 62-99.
™
When paired with PremierLink, Carrier’s Navigator™ speeds
preventive maintenance and repairs, reducing downtime. Service technicians can plug this
intuitive diagnostic tool into the
main control panel of any size
rooftop — or into the panel of one
in a series of daisy-chained rooftops
— for detailed information in plain
language, not codes.
The optional Thermidistat™
is a combination humidistat
and thermostat that
works in conjunction with
MoistureMi$er and
Energy$Recycler. The programmable, low-voltage control
offers separate set points for heating and cooling and separate
dehumidification set points for occupied and unoccupied
periods — all in a single unit.
Components are durable, from the galvanized steel cabinet to
the single, continuous top that eliminates leaks. And an
optional Technicoat postcoating adds a layer of protection
to condenser and evaporator coils, sealing them against the
elements and corrosion.
The 48/50HJ Series also reduces labor costs, with two standard
curb sizes that speed both new-unit installation and retrofits.
A variety of service options — including hinged access panels,
a disconnect switch, and a convenience outlet — helps
technicians work quickly and efficiently.
Standard safety features include a high/low pressure
switch and Freezstats.
Because air quality is important indoors
and out, Carrier offers low-NOx rooftops
that comply with regulations in Air
Quality Management Districts.
AQMD
Handled With Care — Before and After the Sale.
At Carrier, we put as much energy into delivering and maintaining your Weathermaster™ Series
48/50HJ rooftop as we do into designing and building it. An innovative coil protection system
ensures that your unit arrives in factory condition, and expert service and support after the sale
keep it running at peak performance.
To learn more about 48/50HJ Series rooftops, contact your local Carrier representative,
call 1-800-CARRIER, or visit www.carrier.com.
ARI* Capacity Ratings
48HJ
Standard
CFM
Cooling
(Btuh)
Total
kW
SEER†
EER
Sound
Rating
(Bels)
IPLV
3
4
5
6
7.5
8.5
10
12.5
12.5
1200
1450
1750
2100
3000
3000
3200
4300
4300
36,000
47,000
61,000
74,000
90,000
102,000
120,000
139,000
139,000
3.21
4.25
5.55
6.70
8.18
9.44
10.91
14.04
14.04
13.0
13.0
13.0
—
—
—
—
—
—
11.20
11.05
11.00
11.00
11.00
10.80
11.00
9.5
9.5
7.6
7.6
8.0
8.0
8.2
8.2
8.4
8.6
8.6
**
**
**
**
11.6
10.9
9.7
9.8
9.4
Nominal
Tons
Standard
CFM
Net Cooling
Cap (Btuh)
Total
kW
SEER†
EER
Sound
Rating
(Bels)
3
4
5
1200
1450
1750
36,000
47,000
61,000
3.21
4.25
5.55
13.00
13.00
13.00
11.20
11.05
11.00
7.6
7.6
8.0
Unit
50HJ
Nominal
Tons
Standard
CFM
Net Cooling
Cap (Btuh)
Total
kW
EER
Sound
Rating
(Bels)
IPLV
007
008
009
012
014
6
7.5
8.5
10
12.5
2100
3000
3000
3200
4300
74,000
90,000
102,000
120,000
139,000
6.70
8.18
9.44
10.91
14.04
11.00
11.00
10.80
11.00
9.80
8.0
8.2
8.2
8.4
8.6
**
11.6
10.9
11.4
9.9
Unit
48HJ
Nominal
Tons
E/F004
D/E/F005
D/E/F006
D/E/F007
D/E/F008
D/E/F009
D/E/F012
D014
E014
50HJ
Unit
50HJ
004
005
006
LEGEND
Bels
EER
IPLV
SEER
—
—
—
—
Sound Levels (1 bel = 10 decibels)
Energy Efficiency Ratio
Integrated Part-Load Values
Seasonal Energy Efficiency Ratio
* Air Conditioning and Refrigeration Institute.
† Applies only to units with capacity of 65,000 Btuh or less.
** The IPLV applies only to 2-stage cooling units.
1. Rated in accordance with ARI Standard 210/240 (004-012 units) or
360 (014 units) and 270 (004-014 units).
2. Ratings are net values, reflecting the effects of circulating fan heat.
3. Ratings are based on:
Cooling Standard: 80°F db, 67°F wb indoor entering-air temperature
and 95°F db outdoor entering-air temperature.
IPLV Standard: 80°F db, 67°F wb indoor entering-air temperature
and 80°F db outdoor entering-air temperature.
®
As the world leader in
Heating, Ventilation and
Air Conditioning, Carrier is
committed to continually
improving the quality of
comfort we provide to
our customers.
But our level of responsibility
extends well beyond ...
Carrier Corporation has
identified six specific areas
which directly impact how
we, as a world manufacturer,
balance our customers’
needs for comfort with the
environment’s needs for
responsible consumption.
These symbols graphically
represent our six areas of
concentration and will serve
as visual reminders of the
importance of managing our
finite resources.
Each one of us at Carrier
Corporation believes that,
for generations to come,
success will not only be
measured by the quality of
our products and systems,
but also by how we have
improved the quality of life.
NOTES:
A member of the United Technologies Corporation family. Stock symbol UTX.
Specifications subject to change without notice.
©2001 Carrier Corporation, Syracuse, NY
Printed in U.S.A.
848-130
0101