580J
GAS HEAT/ELECTRIC COOLING PACKAGED ROOFTOP
3 TO 15 NOMINAL TONS
Product Data
the environmentally sound refrigerant
C08515
(Unit shown with optional louvered hail guard.)
Page 2
TABLE OF CONTENTS
PAGE
PAGE
FEATURES AND BENEFITS3....................
MODEL NUMBER NOMENCLATURE4............
F ACTORY OPTIONS AND/OR ACCESSORIES6.....
AHRI COOLING RATING TABLES8...............
HEAT RATING TABLE9.........................
SOUND PERFORMANCE TABLE10...............
PHYSICAL DATA12.............................
CURBS & WEIGHTS DIMENSIONS18.............
COOLING TABLES33...........................
STATIC PRESSURE ADDERS53..................
F AN PERFORMANCE56.........................
ELECTRICAL INFORMATION69.................
MCA / MOCP73................................
TYPICAL WIRING DIAGRAMS77................
SEQUENCE OF OPERATION81...................
GUIDE SPECIFICATIONS84......................
APPLICATION DATA30.........................
580J
Your Bryant rooftop unit (RTU) was designed by customers for customers. With “no--strip screw” collars, handled access
panels, and more we’ve made your unit easy to install, easy to maintain and easy to use.
Easy to install:
All Legacy Liner units are field--convertible to horizontal air flow which makes it easy to adjust to unexpecte d job site
complications. Lighter units make easy replacement. Bryant 3--15 ton 580J rooftops fit on existing Bryant curbs dating
back to 1989. Also, our large control box gives you room to work and room to mount Bryant accessory controls.
Easy to maintain:
Easy access handles by Bryant provide quick and easy access to all normally serviced components. Our “no--strip” screw
system has superior holding power and guides screws into position while preventing the screw from stripping the unit’s
metal. Take accurate pressure readings by reading condenser pressure with panels on. Simply remove the black, composite
plug, route your gauge line(s) through the hole, and connect them to the refrigeration service valve(s).
Easy to use:
The newly designed, central terminal board by Bryant puts all your connections and troubleshooting points in one
convenient place, standard. Most low voltage connections are made to the same board and make it easy to find what you’re
looking for and easy to access it. Bryant rooftops have high and low pressure switches, a filter drier, and 2--in (51mm)
filters standard.
the environmentally sound refrigerant
2
Page 3
FEAT URES AND BENEFITS
S Single cooling stage models are available from 3 -- 10 ton.
S Two cooling stage models are available from 7.5 -- 15 ton.
S SEER up to 13.0.
S EER’s up to 11.1.
S IEER’s up to 11.8.
S Up to 28% lighter than similar industry units. Lighter rooftops make easier replacement jobs.
S Utility connections are the same because 3 -- 12. 5 ton units fit on existing Bryant rooftop curbs. This saves time and
money on replacement jobs.
S Standardized components and layout. Standardized components and controls make service a nd stocking parts easier.
S Scroll compressors on all units. This makes service, stocking parts, replacement, and troubleshooting easier.
S Field convertible airflow (3 -- 15 ton). Being able to convert a unit from vertical airflow to horizontal make s it easy to
overcome job site complications. 15 ton models require a simple supply duct cover to field convert from factory vertical
to horizontal.
S Easy--adjust, belt--drive motor available. Bryant provides a factory solution for most points in the fan performance table.
S Provisions for bottom or side condensate drain.
S Capable of thru--the--base or thru--the--curb gas line routing.
S Single--point gas / electrical connection.
S Sloped, composite drain pan. Sloped, composite drain pan sheds water; and won’t rust.
S Standardized controls & control box layout. Standardized components & controls make stocking parts & service easier.
S Tool--less filter access door.
S Clean, easy to use control box.
S Color--code d wiring.
580J
S Large, laminated wiring and power wiring drawings which are affixed to unit make trouble shooting easy.
S Single, central terminal board for test and wiring connections.
S Fast--access, handled, panels for easy access on normally accessed service panels.
S “No--strip” screw system guides screws into the panel & captures them tightly without stripping the screw, the panel, or
the unit.
S Exclusive, newly--design indoor refrigerant header for easier maintenance and replacement.
S Mechanical cooling (115_Fto40_For46_Cto4_C) standard on all models. Winter Start Kit allows cooling operation
downto25_F(--4_C) and Motor Master to --20_F(--29_C).
S High efficiency, gas heat with induced--draft flue exhaust design (3 -- 15 tons).
S Induce draft motor ensures no flue gas can escape into the indoor air stream.
S Bryant designed naturally draining heat exchanger, unlike positive pressure heat exchangers, do not need to be
periodically, manually drained. This saves labor and maintenance expense.
S 2--in (51mm) disposable filters on all units.
S Refrigerant filter--drier on each circuit.
S Each circuit is protected with a high and low pressure switch.
S Many factory--installed options ranging from air management economizers, 2 position dampers, plus c onvenience
outlets, disconnect switch and smoke detectors.
Standard Parts Warranty: 10 yr. aluminized heat exchanger, 5 yr. compressor, 3 yr. Novation condenser coil, 1 yr. parts.
S
S Factory--installed Perfect Humidity system on 3 -- 12.5 ton models, includes MotorMaster I controller.
3
Page 4
MODEL NUMBER NOMENCLATURE
1234567891011121314151617
580JE 06 A 072 A 1A 0 A A
________________________________
Unit TypePackaging
580J = Cooling/Gas Heat RTUA=Standard
Legacy Series w/Puron RefrigerantB=LTL
VoltageFactory Installed Options
E = 4 6 0 --- 3 --- 6 00A = None
J = 208/230--- 1 --- 60
P = 208/230--- 3 --- 60Intake/Exhaust Options
T = 5 7 5 --- 3 --- 60A=None
Cooling TonsE=Tempeconow/barorelief&CO
04 = 3 TonH = Enthalpy econo w/ baro relief
580J
05 = 4 TonL = Enthalpy econo w/ baro relief & CO
06 = 5 TonQ = Motorized 2 pos damper
07 = 6 Ton
08 = 7.5 TonIndoor Fan Options
09 = 8.5 Ton1 = Standard static option
12 = 10 Ton2 = Medium static option
14 = 12.5 Ton3 = High static option
16 = 15 TonC = High Static Option w/High Efficiency Motor
B=Tempeconow/barorelief
2
2
(Size 16 only)
Refrig. System/Gas Heat OptionsCoil Options
A = Standard 1---Stage C ooling models/Nat gas heatModels w/Round Tube Plate Fin (RTPF) condenser coil
B = Standard 1---Stage Cooling models/Low NOxheat( O u t d o o r --- I n d o o r --- H a i l G u a r d )
C = Standard 1--- Stage Cooling models/SS Gas HXA = Al/Cu --- Al/Cu
D = 2 --- S t a g e C o o l i n g m o d e l s 0 8 --- 1 6B = P r e c o a t A l / C u --- Al / C u
F = 2 --- St a g e C oo li n g m o d e ls a n d S S G a s H X ( 0 8 --- 1 6 )C = E --- c o a t A l / C u --- A l / C u
G = 1---Stage Cooling/Al HX w/Perfect Humidity 04--- 07D = E --- c o a t A l / C u --- E --- c o a t A l / C u
H = 1 --- S t a g e C o o l i n g / L o w N oxHeat w/Perfect Humidity
04--- 07
J = 1 --- S t a g e C o o l i n g / S S G a s H X w / P er f e c t H u mi d i t y
04--- 07
K = 2--- Stage Cooling/Al Gas HX w/Perfect Humidity 08-14M = A l / C u --- A l / C u --- L o u v e r e d H a i l g u a r d s
M = 2--- Stage Cool/SS Gas HX w/Perfect Humidity 08-14N = P r e c o a t A l / C u --- A l / C u --- L o u v e r e d H a i l G u a r d s
Heat Level InputQ = E c oa t A l / C u --- E c o a t A l/ C u --- L o u v e r e d H a i l G u a r d s
Standard/Stainless SteelR = C u / C u --- A l / C u --- L o u v e r e d H a i l G u a r d s
072 = 72,000S = C u / C u --- C u / C u --- Lo u v e r e d H a i l G u a r d s
1. Novation coated coils only available with E --- coat.
2. Included with economizer.
3. Sensors used to optimize economizer performance.
4. See application data for assistance.
5. Available on units with MOCP’s of 80 amps or less.
5
Page 6
FACTORY OPTIONS AND/OR ACCESSORIES
Economizer (dry--bulb or enthalpy)
Economizers save money. They bring in fresh, outside air
for ventilation; and provide cool, outside air to cool your
building. This is the preferred method of low ambient
cooling. When c oupled to CO
provide even more savings by coupling the ventilation air
to only that amount required.
Economizers are available, installed and tested by the
factory, with eit her enthalpy or dry--bulb temperature
inputs. There are also models for electromechanical as
well as direct digital controllers. Additional sensors are
available as accessories to optimize the economizers.
Economizers include gravity controlled, barometric relief
which equalizes building pressure and ambient air
580J
pressures. This can be a cost effect ive solution to prevent
building pressurization.
sensors, economizers can
2
CO2Sensor
Improves productivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ventilation. As occupants fill your building,
the CO
CO
When the occupants leave, the CO
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
sensor detects their presence through increasing
2
levels, and opens the economizer appropriately.
2
levels decrease, and
2
Smoke Detectors
Trust the experts. Smoke detectors ma ke your application
safer and your job easier. Bryant smoke det ectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidental contact.
Convenience Outlet (powered or un--powered)
Reduce service and/or installation costs by including a
convenience outlet in your specification. Bryant will
install this service feature at our factory. Provides a
convenient, 15 amp, 115v GFCI receptacle with “Wet in
Use” cover. The “powered” option allows the installer to
power the outlet from the line side of the disconnect or
load side as required by code. The “un--powered” option is
to be powered from a separate 115/120v power source.
Power Exhaust with Barometric Relief
Superior internal building pressure control. This field
installed accessory may eliminate the need for costly,
external pressure control fans.
RTU Open, Multi --Protocol Controller
Connect the rooftop to an existing BAS without needing
complicated translators or adapter modules using the RTU
Open controller. This new controller speaks the 4 most
common building automation system languages (Bacnet,
Modbus, N2, and Lonworks). Use this controller when
you have an existing BAS.
Time Guard II Control Circuit
This accessory protects your compressor by preventing
short--cycling in the event of some other failure, prevents
the compressor from restarting for 30 seconds after
stopping. Not required with RTU Open, or authorized
commercial thermostats.
Motorized 2--Position Damper
The new Bryant 2--position, motorized outdoor air damper
admits up to 100% outside air. Using reliable, gear--driven
technology, the 2--position damper opens to allow
ventilation air and closes when the rooftop stops, stopping
unwanted infiltration.
Manual OA Damper
Manual outdoor air dampers are an economical way to
bring in ventilation air. The dampers are available in 25%
and 50% versions.
Optional Perfect Hum idity System
Bryant’s Perfect Humidity system is an all--inclusive
factory installed option that can be ordered with any
Legacy Line 580J--04--14 rooftop unit.
This system expands the envelope of operation of Bryant’s
Legacy Line rooftop products to provide unprecedented
flexibility to meet year round comfort conditions.
The Perfect Humidit y system has the industry’s only dual
dehumidification mode setting. The Perfect Humidity
system includes two new modes of operati on.
Non--fused Disconnect
This OSHA--compliant, factory installed, safety switch
allows a service technician to locally secure power to the
rooftop.
6
Page 7
FACTORY OPTIONS AND/OR ACCESSORIES (cont.)
The Legacy Line 580J--04--14 rooftop coupled with the
Perfect Humidity system is capable of operating in normal
design cooling mode, subcooling mode, and hot gas reheat
mode. Normal design cooling mode is when the unit will
operate under its normal sequence of operation by c ycling
compressors to maintain comfort conditions.
Subcooling mode will operate to satisfy part load type
conditions when the space requires combined sensible and
a higher proportion of latent loa d control . Hot Gas Reheat
mode will operate when outdoor temperatures diminish
and the need for latent capacity is required for sole
humidity control . Hot Gas Reheat mode will provide
neutral air for maximum dehumidification operation.
Optional St ainless Steel Heat Exchanger
The stainless steel heat exchanger option provides the
tubular heat exchanger be made out of a minimum 20
gauge type 409 stainless steel for applications where the
mixed air to the heat exchanger is expected to drop below
45_F(7_C). Stainless steel may be specified on
applications where the presence of airborne contaminants
require its use (applications such as paper mills) or in
areas with very high outdoor humidity that may result i n
severe condensation in the heat exchanger during cooling
operation.
Flue Discharge Heat Shield
Motormaster Head Pressure Controller
The Motormaster motor controller is a low ambient, head
pressure controller kit that is designed to maintain the
unit’s condenser head pressure during periods of low
ambient cooling operation. This device should be used as
analternativetoeconomizerfreecoolingwhen
economizer usage is either not appropriate or desired. The
Motormaster will either cycle the outdoor fan motors or
operate them at reduced speed to maintain the unit
operation, depending on the model.
Winter Start Kit
The winter start kit by Bryant extends the low ambient
limit of your rooftop to 25_F(--4_C). The kit bypasses the
low pressure switch, preventing nuisance tripping of the
low pressure switch. Other low ambient precautions may
still be prudent.
Propane Heating
Convert your gas heat rooftop from standard natural gas
operation to propane using this field installed kit.
High Altitude Heating
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion at altitudes
above 2000 ft (610m). Kits may not be required in all
areas.
Flue Discharge Deflector
The flue discharge deflector is a useful accessory when
flue gas recirculation is a concern. By venting the flue
discharge upwards, the deflector minimizes the chance for
a neighboring unit to intake the flue exhaust.
The flue discharge heat shield kee ps people from touching
the rooftop unit’s potentially hot flue discharge. This is
especially useful for ground level applications, where
more, untrained people could have access to the unit’s
exterior.
Alternate Motors and Drives
Some applicati ons need larger horsepower motors, some
need more airflow, and some need both. Regardless of the
case, yourBryant expert has afactory installe d
combination to meet your application. A wide selection of
motors and pulleys (drives) are available, factory
installed, to handle nearly any application.
Thru--the--Base Connections
Thru--the--baseconnections,availableaseitheran
accessory or as a factory option, are necessary to ensure
proper connect ion and sea l when routing wire and piping
through the rooftop’s basepan and curb. These couplings
eliminate roof penetration and should be considered for
gas lines, main power lines, as well as control power.
Disconnect Switch Bracket
Provides a pre-- engineered and sized mounting bracket for
applications requiring a unit mounted fused disconne ct of
greater than 100 amps. Bracket assures that no damage
will occur to coils when mounting with screws and other
fasteners.
Supply Duct Cover
This supply duct cover is required when field converting
the factory standard vertical duct supply to horizontal duct
supply configuration. One required per unit. (16 size only)
AHRI--- Air Conditioning, Heating and Refrigeration
580J
Institute Test Standard
ASHRAE --- American Society of Heating, Refrigerating
and Air Conditioning, Inc.
EER--- Energy Efficiency Ratio
IEER--- Integrated Energy Efficiency Ratio
SEER--- Seasonal Energy Efficiency Ratio
Nom.
Capacity
(tons)
Capacity (MBH)
Net Cooling
Tota l Po we r
(KW)
SEEREERIEER
NOTES:
1. Rated in accordance with AHRI Standard 210/240 or
340/360, as appropriate.
2. Ratings are based on:
Cooling Standard: 80_F(27_C) db, 67_F(19_C) wb
indoor air temp and 95_F(35_C) db outdoor air temp.IEER Standard: A measure that expresses cooling
part--- load EER efficiency for commercial unitary air
conditioning and heat pump equipment on the basis of
weighted operation at various load capacities.
3. All 580J units comply with ASHRAE 90.1 Energy
Standard for minimum SEER and EER requirements.
4. 580J units comply with US Energy Policy Act (2005).
To evaluate code compliance requirements, refer to
state and local codes or visit the following website:
http://bcap --- energy.org.
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
Heat ratings are for natural gas heat exchangers operated at or below 2000 ft (610 m). For information on propane or altitudes above 2000 ft (610 m), see the Application Data section of this book. Accessory Propane/High Altitude kits are also
available.
THERMAL
EFFICIENCY
(%)
AFUE
(%)
580J
In the USA the input rating for altitudes above 2000 ft (610m) must be derated by 4% for each 1000 ft (305 m) above sea
level. In Canada, the input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
1. Outdoor sound data is measure in accordance with
AHRI standard 270 --- 2008.
2. Measurements are expressed in terms of sound power.
Do not compare these values to sound pressure values
because sound pressure depends on specific environmental factors which normally do not match individual
applications. Sound power values are independent of
the environment and therefore more accurate.
3. A --- weighted sound ratings filter out very high and very
low frequencies, to better approximate the response of
“average” human ear. A --- weighted measurements for
Bryant units are taken in accordance with AHRI standard 270--- 2008.
10
Page 11
Table 6 – MINIMUM -- MAXIMUM AIRFLOW RATINGS -- NATURAL GAS & PROPANE
NOTE: Perfect Humidity is not available with Novation condenser coil models. Only Round Tube/Plate Fin (RTPF) up to 14 size.
* Section 313 of the Energy Independence and Security Act of 2007 (EISA 2007) mandates that the efficiency of general purpose motors we use in our Light
Commercial Rooftops rated at 5.0HP and larger be increased on or after December 19, 2010. We will offer both high and standard efficient motors until
inventory is depleted and then shift over solely to the high efficient motors only.
Tem p e rat u r e R i s e35 --- 7035 --- 7035 --- 65
580J
Low NOx Gas Heat
LOW
MED
HIGH
#ofstages/#ofburners(total)------
Connection Size------
Rollout switch opens / closes------
Tem p e rat u r e R i s e------
#ofstages/#ofburners(total)------
Connection Size------
Rollout switch opens / closes------
Tem p e rat u r e R i s e------
#ofstages/#ofburners(total)------
Connection Size------
Rollout switch opens / closes------
Tem p e rat u r e R i s e------
17
Page 18
580J
CURBS & WEIGHTS DI M ENSI ONS -- 580J 04--07
C101225
Fig. 1 -- Dimensions 580J 04-- 07
18
Page 19
CURBS & WEIGHTS DI MENSIONS -- 580J 04--07 (cont.)
Fig. 2 -- Dimensions 580J 04-- 07
C
D
580J
C101226
B
Fig. 3 -- Service Clearance
LOCDIMENSIONCONDITION
48--- in (1219 mm)Unit disconnect is mounted on panel
A
B
C
D
18--- in (457 mm)No disconnect, convenience outlet option
18--- in (457 mm)Recommended service clearance
12--- in (305 mm)Minimum clearance
42--- in (1067 mm)Surface behind servicer is grounded (e.g., metal, masonry wall)
36--- in (914 mm)Surface behind servicer is electrically non - -- conductive (e.g., wood, fiberglass)
SpecialCheck for sources of flue products within 10--- ft of unit fresh air intake hood
36--- in (914 mm)Side condensate drain is used
18--- in (457 mm)Minimum clearance
48--- in (1219 mm)No flue discharge accessory installed, surface is combustible material
42--- in (1067 mm)Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36--- in (914 mm)Surface behind servicer is electrically non - -- conductive (e.g., wood, fiberglass)
SpecialCheck for adjacent units or building fresh air intakes within 10--- ft of this unit’s flue outlet
A
C08337
19
Page 20
CURBS & WEIGHTS DI MENSIONS -- 580J 04--07 (cont.)
CONNECTOR
CRBTMPWR001A01
CRBTMPWR003A01
580J
PKG. ACCY.
BC
11
1’-4”
/16”
1’-9
[551]
[406]
D ALT
DRAIN
HOLE
3
1
/4”
[44.5]
GASPOWER CONTROL
3
/4” [19]
NPT
1
/2” [12.7]
NPT
3
/4” [19]
NPT
1
/2” [12.7]
NPT
ACCESSORY
POWER
1
/2” [12.7]
NPT
ROOFCURB
ACCESSORY
CRRFCURB001A01
CRRFCURB002A01
AUNIT SIZE
1’-2”
[356]
2’-0”
[610]
580J*
04-07
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance: 4 ft on each side.
7. Direction of airflow.
8. Connector package CRBTMPWR001A01 is for
thru-the-curb type gas.
CRBTMPWR003A01 is for thru-the-base type
gas connections.
TYPICAL CORNER FASTENING DEVICE
C10480
Fig. 4 -- Roof Curb Details
20
Page 21
CURBS & WEIGHTS DI M ENSI ONS -- 580J 08--12
580J
C101217
Fig. 5 -- Dimensions 580J 08-- 12
21
Page 22
580J
CURBS & WEIGHTS DI MENSIONS -- 580J 08--12 (cont.)
C
LOCDIMENSIONCONDITION
48--- in (1219 mm) Unit disconnect is mounted on panel
36--- in (914 mm)I f d i m e n s i o n --- B i s 1 2 --- i n ( 3 0 5 m m)
A
B
C
D
18--- in (457 mm)No disconnect, convenience outlet option
18--- in (457 mm)Recommended service clearance (use electric screwdriver)
12--- in (305 mm)Minimum clearance (use manual ratchet screwdriver)
36--- in (914 mm)Unit has economizer
12--- in (305 mm)I f d i m e n s i o n --- A i s 3 6 --- i n ( 9 1 4 m m)
SpecialCheck for sources of flue products within 10---ft of unit fresh air intake hood
36--- in (914 mm)Side condensate drain is used
18--- in (457 mm)Minimum clearance
48--- in (1219 mm) No flue discharge accessory installed, surface is combustible material
42--- in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36--- in (914 mm)Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
SpecialCheck for adjacent units or building fresh air intakes within 10 --- ft of this unit’s flue outlet
C101218
Fig. 6 -- 580J 08--12
D
B
A
C08337
Fig. 7 -- Service Clearance
22
Page 23
CURBS & WEIGHTS DI M ENSI ONS -- 580J 08--14
580J
*
08 –1414
ROOFCURB
ACCESSORY
CRRFCURB003A01
CRRFCURB004A01
1’ - 2”
(356)
2’ - 0”
(610)
UNIT SIZE
580J
08 –
580J
TYPICAL CORNER FASTENING DEVICE
C10481
Fig. 8 -- Roof Curb Details
23
Page 24
580J
CURBS & WEIGHTS DI M ENSIONS -- 580J 14
C101223
Fig. 9 -- Dimensions 580J--14
24
Page 25
CURBS & WEIGHTS DI M ENSI ONS -- 580J 14 (cont.)
580J
C101224
C
LOCDIMENSIONCONDITION
48--- in (1219 mm) Unit disconnect is mounted on panel
36--- in (914 mm)I f d i m e n s i o n --- B i s 1 2 --- i n ( 3 0 5 m m)
A
B
C
D
18--- in (457 mm)No disconnect, convenience outlet option
18--- in (457 mm)Recommended service clearance (use electric screwdriver)
12--- in (305 mm)Minimum clearance (use manual ratchet screwdriver)
36--- in (914 mm)Unit has economizer
12--- in (305 mm)I f d i m e n s i o n --- A i s 3 6 --- i n ( 9 1 4 m m)
SpecialCheck for sources of flue products within 10---ft of unit fresh air intake hood
36--- in (914 mm)Side condensate drain is used
18--- in (457 mm)Minimum clearance
48--- in (1219 mm) No flue discharge accessory installed, surface is combustible material
42--- in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
36--- in (914 mm)Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
SpecialCheck for adjacent units or building fresh air intakes within 10 --- ft of this unit’s flue outlet
15723 10 25 11 29 13 38 17 47 21 47 21 47 21 na na
6313613615712523 10 23 10 23 10 190 86
580J
NOTE: Where multiple variations are available, the heaviest combination is listed.
1
For Perfect Humidity add MotorMaster Controller.
2
Where available.
29
Page 30
APPLICATION DATA
Min operating ambient temp (cooling):
In mechanical cooling mode, your Bryant rooftop unit can
safely operate down to an outdoor ambient temperature of
40_F(4_C) and 25_F(--4_C), with an accessory winter
start kit. It is possible to provide cooling at lower outdoor
ambienttemperat uresbyusinglessoutsideair,
economizers, and/or accessory low ambient kits.
Max operating ambient temp (cooling):
The maximum operating ambient temperature for cooling
mode is 115_F(46_C). While cooling operation above
115_F(46_C) may be possible, it could cause either a
reduction in performance, reliability, or a protective action
by the unit’s internal safety devices.
Min mixed air temp (heating):
580J
Using the factory settings, the minimum temperatures for
the mixed air (the combined temperature of the warm
return air and the cold outdoor air) entering the dimpled,
gas heat exchangers are:
AluminizedStainless Steel
50_F(10_C) continuous
45_F(7_C) intermittent
Operating at lower mixed--air temperatures may be
possible, if a field supplied, outdoor air thermostat
initiates both heat stages when the temperature is less than
the minimum temperatures listed above. Please contact
your local Bryant representative for assistance.
40_F(4_C) continuous
35_F(2_C) intermittent
Outdoor air application strategies:
Economizers reduce operating expenses and compressor
run time by providing a free source of cooling and a
means of ventilation to match application changing needs.
In fact, they should be considered for most applications.
Also, consider the various economizer control methods
and their benefits, as well as sensors required to
accomplish your application goals. Please contact your
local Bryant representative for assistance.
Motor limits, Brake horsepower (BHP):
Due to internal design of Bryant units, the air path, and
specially designed motors, the full horsepower (maximum
continuous BHP) band, as listed in Table 8 and 10, can be
used with the utmost confidence. There is no need for
extra safety factors, as Bryant motors are designed and
rigorously tested to use the entire, listed BHP range
without either nuisance tripping or premature motor
failure.
Propane heating:
Propane has different physical qualities t han natural gas.
As a result, propane requires different fuel to air mixture.
To optimize the fuel/air mixture for propane, Bryant sells
different burner orifices in an easy to install accessory kit.
To select the correct burner orifices or determine the heat
capacity for a propane application, use either the selection
software, or the unit’s service manual.
High altitude heating:
Min and max airflow ( h eating and cooling):
To maintain safe and reliable operation of your rooftop,
operate within the heating airflow limits during heating
mode and cooling airflow limits during cooling mode.
Operating above the max may cause blow--off, undesired
airflow noise, or airflow related problems with the rooftop
unit. Operating below the min may cause problems with
coil freeze--up and unsafe heating operation. Heating and
cooling limitations differ when evaluating operating CFM,
the minimum value is the HIGHER of the cooling and
heating minimum CFM values published in Table 7 and
the maximum value is the LOWER of the cooling and
heating maximum values published in Table 7.
Heating--to--cooling changeover:
Your unit will automatically change from heating to
cooling mode when using a thermostat with an
auto--changeover feature.
Airflow:
All units are draw--through in cooling mode and
blow--through in heating mode.
High altitudes have less oxygen, which affects the fuel/air
mixture in heat exchangers. In order to maintain a proper
fuel/air mixture, heat exchangers operating in altitudes
above 2000 ft (610 m) require different orifices. To select
the correct burner orifices or determine the heat capacity
for a high altitude application, use either the selection
software, or the unit’s service manual.
High altitudes have less oxygen, which means heat
exchangers need less fuel. The new gas orifices in this
field installed kit make the necessary adjustment for high
altitude applications. They restore the optimal fuel to air
mixture and maintain healthy combustion on altitudes
above 2000 ft (610 m).
NOTE: Typical natural gas heating value ranges from
975 to 1050 Btu/ft
value goes down approximately 1.7% per every thousand
feet elevation. Standard factory orifices can typically be
used up to 2000 ft (610m) elevation without any
operational issues.
NOTE:For installations in Canada, the input rating
should be derated by 10% for altitudes from 2000 ft
(610m) to 4500 ft (1372m) above sea level.
3
at sea level nationall y. The heating
30
Page 31
APPLICATION DATA (cont.)
Sizing a rooftop
Bigger isn’t necessarily better. While an air conditioner
needs to have enough c apacity to meet the design loads, it
doesn’t need excess capacity. In fact, excess capacity
typically result s in very poor part load performance and
humidity control.
UsinghigherdesigntemperaturesthanASHRAE
recommends for your location, adding “safety factors” to
the calculated load, are all signs of oversizing air
conditioners. Oversizing the air conditioner leads to poor
humidity control, reduced efficiency, higher utility bills,
larger indoor temperature swings, excessive noise, and
increased wear and tear on the air conditioner.
Rather than oversizing an air conditioner, engineers
should “right size” or even slightly undersize air
conditioners. Correctly sizing an air conditioner controls
humidity better; promotes efficiency; reduces utility bills;
extends equipment life, and maintains even, comfortable
temperatures.PleasecontactyourlocalBryant
representative for assistance.
Low ambient applications
The optional Bryant economize r can adequately cool your
space by bringing in fresh, cool outside air. In fact, when
so equipped, accessory low ambient kit may not be
necessary. In low a mbient conditions, unless the outdoor
air is excessively humid or contaminated, economizer
based “free cooling” is the preferred less costly and
energy conscious method.
In low ambient applications where outside air might not
be desired (such as contaminated or excessively humid
outdoor environments), your Bryant rooftop can operate at
ambient tem peratures down to --20_F(--29_C) using the
recommendedaccessory Motormasterlowambient
controller.
580J
31
Page 32
SELECTION PROCEDURE (WITH 580J*07A EXAMPLE)
I.Determine cooling and heating loads.
Given:
Mixed air dry bulb80_F(27_C)
Mixed air wet bulb67_F(19_C)
Ambient dry bulb95_F(35_C)
TC
Load
SHC
Load
Vertical supply air2100 CFM
Heating load85.0 MBH
External static pressure0.67 in. wg
Electrical characteristics230--3--60
II.Make an initial guess at cooling tons.
Refrig. tons = TC
Refrig. tons = 72.0 / 12 = 6.0 tons
In this case, start by looking at the 580J**07.
580J
III. Look up the rooftop’s TC and SHC.
Table 15 shows that, at the application’s supply air
CFM, mixed air and ambient temperatures, the
580J*07A supplies:
TC = 73.7 MBH
Fan motor heat = 2.546* BHP/Motor Eff.
Fan motor heat = 4.9 MBH
XI. Calculate RTU heating capacity.
Building heating load85.0 MBH
Fan motor heat--4.9
Required heating capacity80.1 MBH
XII. Select a gas heater.
Table 4 shows the heating capacities of the
580JE07A = 93.0 MBH. Select the 580JE07A
XIII. Determine electrical requirements.
Table 56 shows the MCA and MOCP of a 580J*07A
(without convenience outlet) as:
MCA = 30.5 amps & MOCP = 45.0 amps
Min. disconnect size: FLA = 30 & LRA = 157.
4
wg
MBH
LEGEND
BHP— Brake horsepower
FLA— Full load amps
LC— Latent capacity
LRA— Lock rotor amp
MBH— (1,000) BTUH
MCA— Min. circuit ampacity
MOCP — Max. over ---current protection
RPM— Revolutions per minute
RTU— Rooftop unit
SHC— Sensible heat capacity
TC— Total capacity
NOTES:
1. Selection software by Bryant saves time by performing
many of the steps above. Contact your Bryant sales
representative for assistance.
2. Unit ratings are gross capacities and do not include the
effect of evaporator fan motor heat. See Step X. for determining amount of evaporator fan motor heat to subtract from total and sensible capacities to obtain net
cooling and net sensible capacities.
3. Selecting a unit with a SHC slightly lower than the
SHC
SHC’s will help control indoor humidity, and prevent
temperature swings.
4. Indoor fan motor efficiency is available in T able 45. Use
the decimal form in the equation, eg. 80% = .8.
------ D o n o t op e r a t e
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
580J04 (3 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN SUBCOOLING MODE
A i r E n t e r i n g E v a p o r a t o r --- C F M
Tem p ( F) A i r E n t
Condenser (Edb)
900120015009001200150090012001500
TC40.643.245.337.039.441.333.435.637.4
75
SHC21.623.925.625.627.729.329.631.633.1
kW2.02.02.02.02.02.02.02.02.0
TC37.039.641.733.636.037.930.232.334.1
85
SHC17.720.222.222.725.026.927.729.931.6
kW2.32.32.32.32.32.32.32.32.3
TC33.536.038.130.232.534.426.929.130.8
95
SHC13.716.618.819.722.424.425.728.230.1
kW2.62.62.62.52.52.52.52.52.5
TC29.932.434.526.829.131.023.625.827.5
105
SHC9.812.915.316.819.722.023.826.528.6
kW2.92.92.92.82.82.82.82.82.8
580J
115
TC26.328.830.923.325.727.520.422.524.2
SHC5.89.211.913.817.019.521.924.827.1
kW3.23.23.23.13.13.13.13.13.1
580J04 (3 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN HOT GAS REHEAT MODE
Tem p ( F) A i r E n t
Condenser (Edb)
105012001350105012001350105012001350
TC14.715.516.215.916.717.416.917.718.4
80
SHC6.77.68.54.85.76.63.24.15.0
kW2.02.02.02.02.02.02.02.02.0
TC15.115.816.416.217.017.617.218.018.6
75
SHC7.58.49.25.86.77.54.45.26.0
kW1.91.91.92.02.02.02.02.02.0
TC15.516.116.716.617.317.917.518.218.8
70
SHC8.49.310.06.97.78.55.56.47.1
kW1.91.91.91.91.91.91.91.91.9
TC16.216.817.317.217.818.318.118.719.2
60
SHC10.210.911.68.99.710.47.88.69.3
kW1.81.81.81.81.81.81.91.91.9
TC17.017.517.917.918.418.818.719.219.6
50
SHC11.912.613.211.011.612.210.110.811.4
kW1.71.71.71.81.81.81.81.81.8
TC17.718.118.518.619.019.319.319.720.1
40
SHC13.714.314.813.013.614.112.413.013.5
kW1.71.71.71.71.71.71.71.71.7
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
------ D o n o t op e r a t e
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
------ D o n o t op e r a t e
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
580J06 (5 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN SUBCOOLING MODE
A i r E n t e r i n g E v a p o r a t o r --- C F M
Tem p ( F) A i r E n t
Condenser (Edb)
175020002250175020002250175020002250
TC73.178.784.563.266.970.853.255.157.1
75
SHC35.337.238.842.043.745.348.750.351.8
kW3.33.33.33.33.33.33.33.33.3
TC67.671.275.059.161.263.350.651.151.5
85
SHC27.930.031.936.338.340.144.846.648.2
kW3.83.83.83.83.83.83.83.83.8
TC62.163.865.555.155.455.848.047.046.0
95
SHC20.522.924.930.732.934.840.942.944.7
kW4.34.34.34.34.34.34.34.34.3
TC56.656.356.051.049.648.345.443.040.5
105
SHC13.115.718.025.027.529.636.939.241.2
kW4.84.84.84.84.84.84.74.74.7
580J
115
TC51.148.846.546.943.940.742.839.035.0
SHC5.88.611.019.422.024.433.035.537.7
kW5.35.35.35.35.35.35.25.25.2
580J06 (5 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN HOT GAS REHEAT MODE
Tem p ( F) A i r E n t
Condenser (Edb)
175020002250175020002250175020002250
TC23.024.425.624.726.227.426.327.729.0
80
SHC5.36.16.83.24.04.71.42.22.9
kW2.92.92.92.92.92.92.92.92.9
TC23.324.625.725.026.327.526.427.829.0
75
SHC5.15.86.53.13.94.51.42.22.8
kW2.92.92.92.92.92.92.92.92.9
TC23.524.825.925.226.427.526.627.929.0
70
SHC4.85.56.23.03.74.31.42.12.8
kW3.03.03.03.03.03.03.03.03.0
TC24.125.226.125.626.727.726.928.029.0
60
SHC4.35.05.52.83.43.91.42.02.6
kW3.03.03.03.03.03.03.03.03.0
TC24.725.626.426.127.027.827.228.229.0
50
SHC3.84.44.82.53.13.51.42.02.4
kW3.13.13.13.13.13.13.13.13.1
TC25.326.026.726.527.327.927.628.329.0
40
SHC3.33.84.22.32.83.11.41.92.3
kW3.13.13.13.23.23.23.23.23.2
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
NOTE: Perfect Humidity only available on 2 --- stage RTPF models.
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
2250/0.053000/0.073750/0.09
A i r E n t e r i n g E v a p o r a t o r --- E w b ( F )
AIR ENTERING EVAPORATOR --- Ewb (F)
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
75 Dry Bulb
64 Wet Bulb
(56% Relative)
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
A i r E n t e r i n g E v a p o r a t o r --- C f m
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb=tedb
t
= Wet --- bulb temperature corresponding to enthalpy of air
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
NOTE: Perfect Humidity only available on 2 --- stage RTPF models.
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
2550/0.043400/0.054250/0.07
A i r E n t e r i n g E v a p o r a t o r --- E w b ( F )
AIR ENTERING EVAPORATOR --- Ewb (F)
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
75 Dry Bulb
64 Wet Bulb
(56% Relative)
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
A i r E n t e r i n g E v a p o r a t o r --- C f m
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb=tedb
t
= Wet --- bulb temperature corresponding to enthalpy of air
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
NOTE: Perfect Humidity only available on 2 --- stage RTPF models.
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
3000/0.044000/0.065000/0.07
A i r E n t e r i n g E v a p o r a t o r --- E w b ( F )
AIR ENTERING EVAPORATOR --- Ewb (F)
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
75 Dry Bulb
64 Wet Bulb
(56% Relative)
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
A i r E n t e r i n g E v a p o r a t o r --- C f m
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb=tedb
t
= Wet --- bulb temperature corresponding to enthalpy of air
------ D o n o t op e r a t e i n t h i s r e g i on
Cfm--- Cubic feet per minute (supply air)
EAT(db)--- Entering air temperature (dry bulb)
EAT(wb)--- Entering air temperature (wet bulb)
SHC--- Sensible heat capacity
TC--- Total capacity
NOTE: Perfect Humidity only available on 2 --- stage RTPF models.
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
3750/0.025000/0.066250/0.05
A i r E n t e r i n g E v a p o r a t o r --- E w b ( F )
AIR ENTERING EVAPORATOR --- Ewb (F)
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
75 Dry Bulb
64 Wet Bulb
(56% Relative)
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
A i r E n t e r i n g E v a p o r a t o r --- C f m
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb=tedb
t
= Wet --- bulb temperature corresponding to enthalpy of air
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r in g W e t --- B u l b
kW--- Compressor Motor Power Input
Idb--- L e a v in g D r y --- B u l b
Iwb --- L e a v i n g We t --- B u lb
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC--- Total Capacity (1000 Btuh) Gross
8595105115
EA (dB)EA (dB)EA (dB)EA (dB)
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb=tedb
t
= Wet --- bulb temperature corresponding to enthalpy of air
Fig. 19 -- Barometric Relief Flow--Horizontal 15 Ton
C08074
Horizontal Economizers
C101121
Fig. 20 -- Return Air Pressure Drop--Horizontal 15 Ton
C08075
Vertical Economizers
C101122
Fig. 21 -- Barometric Relief Flow--Vertical 15 Ton
54
Page 55
0
1000
2000
3000
4000
5000
6000
00 .10.20.30.4
RETURN AI R FLOW (CFM)
RETURN DUCT STAT IC PRESSURE DRO P (in. wg)
15-Ton
FLOW (cfm)
2500
2000
1500
1000
500
0
00.10.20.30.40.5
STATIC PRESSURE (in. wg)
3-15 Ton
C101124
Vertical Economizers
Fig. 23 -- Horizontal Power Exhaust Performance
C101123
Fig. 22 -- Return Air Pressure Drop--Vertical 15 Tons
General fan performance notes:
1. Interpolation is permissible. Do not extrapola te.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses, as shown in the tables above. Selection software is available, through your salesperson,
to help you select the best motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Bryant recommended the lower horsepower option.
5. For information on the electrical properties of Bryant motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Bryant motors, see the application data section of this book.
7. The EPACT (Ene rgy Policy Act of 1992) re gulates energy requirements for specific types of indoor fan motors. Motors
regulated by EPACT include any general purpose, T--frame (three--digit, 143 and larger), single--speed, foot mounted,
polyphase, squirrel cage induction motors of NEMA (National Electrical Manufacturers Association) design A and B,
manufactured for use in the United States. Ranging from 1 to 200 Hp, these continuous--duty motors operate on 230
and 460 volt, 60 Hz power. If a motor does not fit into these specifications, the motor does not have to be replaced by
an EPACT compliant energy efficient motor. Variable speed motors are exempt from EPACT compliance requirements. The refore, the indoor fan motors for Bryant 580J04--16 units are exempt from these requirements.
Fig. 24 -- 1 --Stage Cooling Typical Power Diagram
77
Page 78
580J
C08577B
Fig. 25 -- 2 --Stage Cooling Typical Power Diagram
78
Page 79
C08524
580J
Fig. 26 -- 1 --Stage Typical Wiring Diagram
79
Page 80
580J
C08578
Fig. 27 -- 2 --Stage Typical Wiring Diagram
80
Page 81
SEQUENCE OF OPERATION
General
The sequence below describes the sequence of operation
for an electromechanical unit with and without a factory
installed EconoMi$er IV (called “economizer” in this
sequence). For information regarding a direct digital
controller,seethestart--up,operations,and
troubleshooting manual for the applica ble controller.
Electromechanical units with no economizer
Cooling —
When the thermostat calls for c ooling, terminals G and Y1
are energized. As a result, the indoor fan contactor (IFC)
and the compressor contactor (C1) are energized, causing
the indoor fan motor (IFM), compressor #1, and outdoor
fan to start. If the unit has 2 stage s of cooling, the
thermostat will additionally energize Y2. The Y2 signal
will energize compressor contactor #2 (C2), causing
compressor #2 to start. Regardless of the number of
stages, the outdoor fan motor runs continuously while unit
is cooling.
Heating
NOTE:Legacy Line (580J) units have either 1 or 2
stages of gas heat.
When the thermostat calls for heating, power is sent to W
on the Integrated Gas Controller (IGC) board. An LED
(light--emitting diode) on the IGC board turns on and
remains on during normal operation. A check is made to
ensure that the rollout switch and limit switch are closed.
If the check was successful, the induce d--draft motor is
energized, and when its speed is satisfactory, as proven by
the “hall effect” sensor, the ignition activation period
begins. The burners will ignite within 5 seconds. If the
burners do not light, there is a 22--second delay before
another 5--second attempt. This sequence is repeated for
15 minutes or until the burners light. If, after the 15
minutes, the burners still have not lit, heating is locked
out. To reset the control, break 24--v power to the
thermostat.
When ignition occurs, the IGC board will continue to
monitor the condition of the rollout switch, the limit
switches, the “hall effect” sensor, as well as the flame
sensor. 45 seconds after ignition occurs, assuming the unit
is controlled through a room thermostat set for fan auto,
the indoor fan motor will energize (and the outdoor air
dampers will open to their minimum position). If, for
some reason, the over--temperature limit opens prior to the
start of the indoor fan blower, the unit will shorten the
45--second delay to 5 seconds less than the time from
initiation of heat to when the limit tripped. Gas will not be
interrupted to the burners and heating will continue. Once
the fan--on delay has been modified, it will not change
back to 45 seconds until power is reset to the control.
On units with 2 stages of heat, when additional heat is
required, W2 closes and initiates power to the second
stage of the main gas valve. When the thermostat is
satisfied, W1 and W2 open and the gas valve closes,
interrupting the flow of gas to the main burners.
If the call for W1 lasted less than 1 minute, the heating
cycle will not terminate until 1 minute after W1 became
active. If the unit is controlled through a room thermostat
set for fan auto, the indoor fan motor will continue to
operate for an additional 45 seconds then stop. If the
over--temperature limit opens after the indoor motor is
stopped, but within 10 minutes of W1 becomi ng inactive,
on the next cycle the time will be extended by 15 seconds.
The maximum delay is 3 minutes. Once modified, the fan
off delay will not change back to 45 seconds unless power
is reset to the control. A LED indicator is provided on t he
IGC to monitor operation.
Electromechanical units with an economizer
Cooling —
When free cooling is not available, the compressors will
be controlled by the z one thermostat. When free cooling is
available, the outdoor air damper is modulated by the
EconoMi$er IV control to provide a 50_F(10_C) to 55_F
(13_C) mixed air temperature into the zone. As the mixed
air temperature fluctuates above 55_F(13_C)or below
50_F(10_C) dampers will be modulated (open or close)
to bring the mixed air temperature back within control. If
mechanical cooling is utilized with free cooling, the
outdoor air damper will maintain its current position at the
time the compressor is started. If the increase in cooling
capacity causes the mixed air temperature to drop below
45_F(7_C), then the outdoor air damper position will be
decreased to the minimum position. If the mixed air
temperature continues to fall, the outdoor air damper will
close. Control returns to normal once the mixed air
temperature rises above 48_F(9_C). The power exhaust
fans will be energized and de--energized, if installed, as
the outdoor air damper opens and closes.
If field installed accessory CO
the EconoMi$er IV control, ademand controlled
ventilation strategy will begin to operate. As the CO
level in the zone increases above t he CO2setpoint, the
minimum position of the damper will be increased
proportionally. As the CO
increase in fresh air, the outdoor air dam per will be
proportionally closed. For EconoMi$er IV operation, there
must be a thermostat call for the fan (G). If t he unit is
occupied and the fan is on, the damper will operate at
minimum position. Otherwise, the damper will be closed.
When the EconoMi$er IV control is in the occupied mode
and a call for cooling exists (Y1 on the thermostat), the
control will first check for indoor fan operation. If the fan
is not on, then cooling will not be activated. If the fan is
on, then the control will open the EconoMi$er IV damper
to the minimum position.
sensors are connected to
2
level decreases because of the
2
580J
2
81
Page 82
SEQUENCE OF OPERATION (cont.)
On the initial power to the EconoMi$er IV control, it will
take the damper up to 2 1/2 minutes before it begins to
position itself. After the initial power-- up, further changes
in damper position can take up to 30 seconds to initiate.
Damper movement from full closed to full open (or vice
versa) will take between 1 1/2 and 2 1/2 minutes. If free
cooling can be used as determined from the appropriate
changeover command (switch, dry bulb, enthalpy curve,
differential dry bulb, or different ial enthalpy), then the
control will modulate the dampers open to maintain the
mixed ai r temperature setpoint at 50_F(10_C) to 55_F
(13_C). If there is a further demand for cooling (cooling
second stage -- Y2 is energized), then the control will
bring on compressor stage 1 to maintain the mixe d air
temperature set point. The EconoMi$er IV damper will be
open at maximum position. EconoMi$er IV operation is
580J
limited to a single compressor.
Heating
The sequence of operation for the heating is the same as
an electromechanical unit with no economizer. The only
difference is how the economizer acts. The economizer
will stay at the Economizer Minimum Position while the
evaporator fan is operating. The outdoor air damper is
closed when the indoor fan is not operating.
Optional Perfect Humidity System
Units with the factory equipped Perfect Humidity option
are capable of providing multiple modes of improved
dehumidification as a variation of the normal cooling
cycle. The Perfect Humidity option includes additional
valves in the liquid line and discharge line of each
refrigerantcircuit, asmall reheatcondensercoil
downstreamoftheevaporator,andMotormaster
variable--speed control of some or all outdoor fans.
Operation of the revised refrigerant circuit for each mode
is described below.
NOTE: x = refrigerant circuit A, B, or C.
Normal Cooling
Refrigerant flows from the outdoor condenser through the
normally open Cooling Valve (CV.x) to the expansion
device. Reheat1 Valve (RH1.x) and Reheat2 Valve
(RH2.x) are closed.
Reheat1 (Subcooling Mode) -- 580J04--16
This mode increases latent cooling and decreases sensible
cooling compared to normal cooling. Refrigerant flows
from the outdoor condenser, through the normall y open
Reheat1 Valve (RH1.x), and through the reheat condenser
coil to the expansion device. Cooling Valve (CV.x) and
Reheat2 Valve (RH2.x) are closed.
Reheat2 (Hot Gas Reheat Mode) -- 580J04--16
This mode provides maximum latent cooling with little to
no sensible capacity. This mode can operate to provide
dehumidification when there is no cooling demand. Like
Reheat1 mode, refrigerant flows from the outdoor
condenser, through the normally open Reheat1 Valve
(RH1.x), and through the reheat condenser coil to the
expansion device. The Cooling Valve (CV.x) is closed.
Reheat2 Valve (RH2.x) is open which provides some
compressor discharge gas to the reheat condenser to
further increase the reheat of the evaporator airstream.
RH2.x
COND COIL
COMP
OUTDOOR AIR
CLOSED VALVE
OPEN VALVE
Normal Cooling Mode -- Perfect Humidity System (580J04--16)
CV.x
RH1.x
82
PERFECT HUMIDITY
COIL
EVAP COIL
INDOOR ENTERING
METERING
DEVICE
a48-8172
C09455
Page 83
RH2.x
COMP
CLOSED VALVE
OPEN VALVE
COND COIL
RH1.x
CV.x
OUTDOOR AIR
PERFECT HUMIDITY
COIL
EVAP COIL
INDOOR ENTERING
AIR
Subcooling Mode (Reheat 1) -- Perfect Humidity System (580J04--16)
RH2.x
METERING
DEVICE
580J
a48-8173
C09456
COMP
CLOSED VALVE
OPEN VALVE
COND COIL
RH1.x
CV.x
OUTDOOR AIR
PERFECT HUMIDITY
COIL
EVAP COIL
INDOOR ENTERING
AIR
Hot Gas Reheat Mode (Reheat2) -- Perfect Humidity System (580J04--16)
METERING
DEVICE
a48-8174
C09457
83
Page 84
GUIDE SPECIFICATIONS -- 580J**04--16
Gas Heat/Electric Cooling Packaged Rooftop
HVAC Guide Specifications
SizeRange:3to15NominalTons
SectionDescription
23 06 80Schedules for Decentralized HVAC Equipment
1. Schedule is per the project specification requirements.
23 07 16HVAC Equipment Insulation
23 07 16.13Decentralized, Rooftop Units:
580J
23 07 16.13.A.Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 1/2--in. thick, minimum 1 1/2 lb density, flexible
fiberglass insulation bonded with a phenolic binder, neoprene coated on the air side.
2. Insulation and adhesive shall m eet NFPA 90A requirements for flam e spread a nd smoke generation.
23 07 16.13.B.Gas heat compartm ent:
1. Aluminum foil--faced fiberglass insulation shall be used.
2. Insulation and adhesive shall m eet NFPA 90A requirements for flam e spread a nd smoke generation.
23 09 13Instrumentation and Control Devices for HVAC
23 09 13.23Sensors and Transmitters
23 09 13.23.A.Thermostats
1. Thermostat must
a. energize both “W” and “G” when calling for heat.
b. have capability to energize 2 different stages of cooling, and 2 different stages of heating.
c. include capability for occupancy scheduling.
23 09 23Direct--digital Control system for HVAC
23 09 23.13Decentralized, Rooftop Units:
23 09 23.13.B.RTU Open -- Open protocol, direct digital controller:
1. Shall be ASHRAE 62--2001 compliant.
2. Shall accept 18-- 30VAC, 50--60Hz, and consumer 15VA or less power.
3. Shall have an operating tempe rature range from --40_F(--40_C) to 130_F(54_C), 10% -- 90% RH (non--condens-
ing).
4. Shall include built--in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2
and LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate communication board.
5. Shall allow access of up to 62 network variables (SNVT). Shall be compatible with all open controllers
6. Baud rate Controller shall be selectable using a dipswitch.
7. Shall have an LED display independently showing the status of serial communication, running, errors, power, all
digital outputs, and all analog inputs.
8. Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air quality, outdoor air quality, compressor lock--out, fire shutdown, enthalpy switch, and fan status/filter status/ humidity/ remote occupancy.
9. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve.
10. Shall have built--in surge protection circuitry through solid state polyswitches. Polyswitches shall be used on incoming power and network connections. Polyswitches will return to normal when the “trip” condition clears.
11. Shall have a battery back--up capable of a minimum of 10,000 hours of data and time clock retention during power
outages.
12. Shall have built--in support for Bryant technician tool.
84
Page 85
13. Shall include an EIA--485 protocol communication port, an access port for connection of either a computer or a
Bryant technician tool, an EIA--485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks communications card.
14. Software upgrades will be accomplished by e ither local or remote download. No software upgrades through chip
replacements are allowed.
23 09 33Electric and Electronic Control System for HVAC
1. Shall be complete with self--contained low--voltage control circuit protected by a resettable circuit breaker on the
24--v transformer side. Transformer shall have 75VA capability.
2. Shall utilize color-- coded wiring.
3. Shall include a central control terminal board to conveniently and safely provide connection points for vital control functions such as: smoke detectors, phase monitor, gas controller, economizer, thermostat , DDC control options, and low and high pressure switches.
4. The heat exchanger shall be controlled by an integrated gas controller (IGC) mi croprocessor. See heat exchanger
section of this specification.
5. Unit shall include a mi nimum of one 8--pin screw terminal connection board for c onnection of control wiring.
23 09 33.23.B.Safeties:
1. Compressor ove r--temperature, over--current. High inte r nal pressure differential.
2. Low pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross--wiring of the safety switches between circuits 1 and 2.
b. Low pre ssure switch shall use different color wire t han the high pressure switch. The purpose is to a ssist the
installer and service technician to correctly wire a nd or troubleshoot the rooftop unit.
3. High pre ssure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pres-
sure switches. They shall physically prevent the cross--wiring of the safety switches between circuits 1 and 2.
b. High pre ssure switch shall use different color wire t han the low pressure switch. The purpose is to assist the
installer and service technician to correctly wire a nd or troubleshoot the rooftop unit.
4. Automatic reset, motor thermal overload protector.
5. Heating section shall be provided with the following minimum protections:
a. High temperature limit switches.
b. Induced draft motor speed sensor.
c. Flame rollout switch.
d. Flame proving controls.
1. Shall consist of factory installed, low velocity, disposable 2--in. thick fiberglass filters of commercially available
sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.
3. Filters shall be accessible through an access panel with “no--tool” removal as described in the unit cabinet section
of this specification (23 81 19.13.H).
23 81 19Self--Contained Air Conditioners
23 81 19.13Small--Capacity Self--Contained Air Conditioners (580J**04--16)
23 81 19.13.A.General
1. Outdoor, rooftop mounted, electrically controlled, heating a nd cooling unit utilizing a fully hermetic scroll compressor(s) for cooling duty and gas combustion for heating duty.
2. Factory assembled, single--piece heating and cooling rooftop unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, and special features required prior to field start--up.
3. Unit shall use environmentally sound, Puron refrigerant.
85
580J
Page 86
580J
4. Unit shall be installed in accordance with the manufacturer’s instructions.
5. Unit must be selected and installed in compliance with local, state, and federal codes.
23 81 19.13.B.Quality Assurance
1. Unit meets ASHRAE 90.1 minimum efficiency requirements.
2. Unit shall be rated in accordance with AHRI Standards 210/240 and 340/360.
3. Unit shall be designed to conform to ASHRAE 15, 2001.
4. Unit shall be UL--tested and certified in accordance with ANSI Z21.47 Standards and UL--listed and certified
under Canadian standards as a total package for safety requirements.
5. Insulation and adhesive shall m eet NFPA 90A requirements for flam e spread a nd smoke generation.
6. Unit casing shall be capable of withsta nding 500--hour salt spray exposure per ASTM B117 (scribed specimen).
7. Unit casing shal l be capable of withstanding Federal Test Method Standard No. 141 (Method 6061) 5000--hour salt
spray.
8. Unit shall be designed in accordance with ISO 9001, and shall be manufactured in a facility registered by ISO
9001.
9. Roof curb shall be designed to conform to NRCA Standards.
10. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be
stored at the factory, and must be available upon request.
11. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.
12. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control box up
to 40 mph.
13. Unit shake tested to assurance level 1, ASTM D4169 to ensure shipping reliability.
14. High Efficient Motors listed shall meet section 313 of the Energy Independence a nd Security Act of 2007 (EISA
2007)
23 81 19.13.C.Delivery, Storage, and Handling
1. Unit shall be stored and handled per manufacturer’s recommendations.
2. Lifted by crane requires either shipping top panel or spreader bars.
3. Unit shall only be stored or positioned in the upright position.
23 81 19.13.E.Project Conditions
1. As specified in the contract.
23 81 19.13.F.Operating Characteri stics
1. Unit shall be ca pable of starting and running at 115_F(46_C) ambient outdoor temperature, meeting maximum
load criteria of AHRI Standard 210/240 or 340/360 at ± 10% voltage.
2. Compressor with standard controls shall be capable of operation down to 40_F(4_C), ambient outdoor temperat-
ures. Accessory winter start kit is necessary if mechanically cooling at ambient temperatures down to 25_F
(-- 4_C).
3. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
4. Unit shall be factory configured for vertical supply & return c onfigurations.
5. Unit shall be field convertible from vertical to horizontal airflow on all models. No special kit required on 04--14
models. Supply duct kit required for 16 size model only
6. Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical
return.
23 81 19.13.G.Electrical Requirements
1. Main power supply voltage, phase, and frequenc y must match those required by t he manufacturer.
23 81 19.13.H.Unit Cabinet
1. Unit cabinet shall be constructed of galvanized stee l, a nd shall be bonderized and coated with a prepainted baked
enamel finish on all externally exposed surfaces.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360
minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2--in. thick, 1 lb density,
flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil-- faced fiberglass insulation shall be
used in the gas heat compartment.
4. Base of unit shall have a minimum of four locations for thru--the--base gas and electrical connections (factory
installed or field installed), standard.
86
Page 87
5. Base Rail
a. Unit shall have base rails on a minimum of 2 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop by fork truck.
d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:
a. Shall be a sloped condensate drain pan made of a non--corrosive material.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 3/4” --14 NPT drain connection, possible either through the bottom or side of the drain pan. Con-
nection shall be made per manufacturer’s recommendations.
7. Top panel:
a. Shall be a single piece top panel on 04 thru 12 sizes, two piece on 14 and 16 sizes.
8. Gas Connections:
a. All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit (ho-
rizontal plane).
b. Thru--the --base capability
(1.) Standard unit shall have a thru--the--base gas--line location using a raised, embossed portion of the unit
basepan.
(2.) Optional, factory approved, water--tight connection method must be used for thru--the--base gas connec-
tions.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
9. Electrical Connections
a. All unit power wiring shall enter unit cabinet at a single, factory prepared, knockout location.
b. Thru--the --base capability.
(1.) Standard unit shall have a thru--the--base electric al location(s) using a raised, embossed portion of the unit
basepan.
(2.) Optional, factory approved, water--tight connection method must be used for thru--the--base electrical con-
nections.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
10. Component access panels (standard)
a. Cabinet panels sha ll be easily removable for servicing.
b. Unit shall have one factory installed, tool--less, removable, filter access panel.
c. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and com-
pressors shall have molded composite handles.
d. Handles shall be UV modified, composite. They shall be permanently attached, and recessed into the panel.
e. Screws on the vertical portion of all removable access panel shall engage into heat resistant, molded compos-
ite collars.
f. Collars shall be removable and easily replaceable using manufacturer recommended parts.
23 81 19.13.I.Gas Hea t
1. General
a. Heat exchanger shall be an induced draft design. Positive pressure heat exchanger designs shall not be al-
lowed.
b. Shall incorporate a direct--spark ignition system and redundant main gas valve.
c. Gas supply pressure at the inlet to the rooftop unit gas valve must match that required by the manufacturer.
2. The heat exchanger shall be controll ed by an integrated gas controller (IGC) microprocessor.
a. IGC board shall notify users of fault using an LED (light--emitting diode).
b. The LED shall be visible without removing the control box access panel.
c. IGC boa rd shall contain algorithms that modify evaporator fan operation to pre vent future cycling on high
temperature limit switch.
d. Unit shall be equipped with anti--cycle protection with one short cycle on unit flame rollout switch or 4 con-
tinuous short cycles on t he high temperature limit switch. Fault indication shall be made using an LED.
580J
87
Page 88
580J
3. Standard Heat Exchanger construction
a. Heat exchanger shall be of the tubular--section type constructed of a minimum of 20--gauge steel coated with a
nominal 1.2 mil aluminum--silicone alloy for corrosion resistance.
b. Burners shall be of the in--shot type constructed of aluminum--coated steel.
c. Burners shall incorporate orifices for rated heat output up to 2000 ft (610m) elevation. Additional accessory
kits may be required for applications above 2000 ft (610m) elevation, depending on local gas supply condi-
tions.
d. Each heat exchanger tube shall contain multiple dimples for increased heating effectiveness.
4. Optional Stainless Steel Heat Exchanger construction
a. Use energy saving, direct--spark ignition system.
b. Use a redundant main gas valve.
c. Burners shall be of the in--shot type constructed of aluminum--coated steel.
d. All gas piping shal l enter the unit cabinet at a single location on side of unit (horizontal plane).
e. The optional stainless steel heat exchanger shall be of the tubular--section type, constructed of a minimum of
20--gauge type 409 stainless steel.
f. Type 409 stainless steel shall be used in heat exchanger tubes and vestibule plate.
g. Complete stainless steel heat exchanger allows for greater application flexibility.
5. Optional Low NO
a. Low NO
x
agement District (SCAQMD) low--NO
b. Primary tubes and vestibule plates on low NO
Heat Exchanger construction
x
reduction shall be provided to reduce nitrous oxide emissions to meet California’s Air Quality Man-
emissions requirement of 40 nanograms per joule or less.
x
units shall be 409 stainless steel. Other components shall be
x
aluminized steel.
6. Induced draft combustion motor and blower
a. Shall be a direct --drive, single inlet, forward--curved centrifugal type.
b. Shall be made from steel with a corrosion-- resistant finish.
c. Shall have permanently lubricated sealed bearings.
d. Shall have inherent thermal overload protection.
e. Shall have an automatic reset feature.
23 81 19.13.J.Coi ls
1. Standard Aluminum Fin -- Copper Tube Coils:
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seam-
less internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL 1995 burst
test at 1775 psig.
c. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst
test at 1980 psig.
2. Optional Pre--coated aluminum --fin condenser coils:
a. Shall have a durable epoxy --phenolic coating to provide protection in mildly corrosive coastal environments.
b. Coating shall be applied to the aluminum fi n stock prior to the fin stamping process to create an inert barrier
between the aluminum fin and copper tube.
c. Epoxy--phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper--fin evaporator and condenser coil s:
a. Shall be constructed of coppe r fins mec hanically bonded to copper tubes and copper tube sheets.
b. Galvanized steel tube sheets shall not be acceptable.
c. A polymer strip shall prevent coil assembly from contacting the sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan.
4. Optional E--coated aluminum--fin evaporator and condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without ma terial
bridging between fins.
b. Coating process shall ensure complete coil encapsulation of tubes, fins and headers.
c. Color shall be high gloss bla ck with gloss per ASTM D523--89.
d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.
e. Superior hardness characteristics of 2H per ASTM D3363--92A and cross--hatch adhesion of 4B--5B per ASTM
D3359--93.
f. Impact resistance shall be up to 160 in.--lb (ASTM D2794--93).
88
Page 89
g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively (ASTM
D2247--92 and ASTM D870--92).
h. Corrosion durability shall be confirmed through testing to be no l ess than 1000 hours salt spray per ASTM
B117--90.
5. Standard All Aluminum Novation Coils:
a. Standard condenser coils shall ha ve all aluminum NOVATION Heat Exchanger Technology design consisting
of aluminum multi port flat tube design and aluminum fin. Coils shall be a furnace brazed design and contain
epoxy lined shrink wrap on all aluminum to copper connections.
b. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst
test at 1980 psig.
6. Optional E--coated aluminum--fin, aluminum tube condenser coils:
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil external surface areas without mater-
ial bridging between fins or louvers.
b. Coating process shall ensure complete coil encapsulation, including all exposed fin edges.
c. E--coat thickness of 0.8 to 1.2 mi l with top coat having a uniform dry film thickness from 1.0 to 2.0 mi l on all
external coil surface areas, including fin edges, shall be provided.
d. Shall have superior hardness characteristics of 2H per ASTM D3363--00 and cross--hatch adhesion of 4B--5B
per ASTM D3359--02.
e. Shall have superior impact resistance with no cracking, chipping or peeling per NSF/ANSI 51--2002 Method
10.2.
23 81 19.13.K.Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. Fixed orifice metering system shall prevent mal--distribution of two--phase refrigerant by including multiple
fixed orifice devices in each refrigeration circuit. Each orifice is to be optimized to the coil circuit it serves.
b. Refrigerant filter drier -- Solid core design.
c. Service gauge connections on suction and discharge lines.
d. Pressure gauge access through a specially designed access port in the top panel of the unit.
2. There shall be gauge line access port in the skin of the rooftop, covered by a black, removable plug.
a. The plug shall be easy to remove and replace.
b. When the plug is removed, the gauge access port shall enable maintenance personnel t o route their pressure
gauge lines.
c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling the read-
ing with the compressor access panel on.
d. The plug shall be made of a leak proof, UV--resistant, composite material.
3. Compressors
a. Unit shall use fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
c. Compressors shall be internally protected from high discharge temperature conditions.
d. Compressors shall be protected from an over--temperature and over--amperage conditions by an int ernal, mot or
overload device.
e. Compressor shall be factory mounted on rubber grommets.
f. Compressor motors shall have internal line break thermal, current overload and high pressure differential pro-
tection.
g. Crankcase heaters shall not be required for normal operating range, unless requi red by compressor manufac-
turer due to refrigerant charge limits.
23 81 19.13.L.Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by a pivoting filter tray, facilitating easy removal and installation.
4. Filters shall be standard, commercially available sizes.
5. Only one size filter per unit is allowed.
23 81 19.13.M. Evaporator Fan and Motor
1. Evaporator fan motor:
a. Shall have permanently lubricated bearings.
b. Shall have inherent automatic--reset thermal overload protection or circuit breaker.
580J
89
Page 90
580J
c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety fact ors above that rating
shall be required.
2. Belt--driven Evaporator Fan:
a. Belt drive shall include an adjustable pitch motor pulley.
b. Shall use sealed, permanently lubricated ball--bearing type.
c. Blower fan shall be double--i nlet type with forward--curved blades.
d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
23 81 19.13.N.Condenser Fans and Motors
1. Condenser fan motors:
a. Shall be a totally enclosed motor.
b. Shall use permanently lubricated bearings.
c. Shall have inherent thermal overload protection with an automatic reset feature.
d. Shall use a shaft--down design on 04 to 12 models and shaft--up on 14 size with rain shield.
2. Condenser Fans:
a. Shall be a direct--driven propeller type fan.
b. Shall have aluminum blades riveted to corrosion--resistant steel spiders and shall be dynamically balanced.
23 81 19.13.O.Special Features Options and Accessories
1. Integrated Economiz ers:
a. Integrated, gear--driven parallel modulating blade design type capable of simultaneous economizer and com-
pressor operation.
b. Independent modules for vertical or horizontal return configurations shall be available. Vertical return modules
shall be available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or return
shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or hu-
midity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive
air stream control.
f. Shall be equipped with low--leakage dampers, not to exceed 2% leakage at 1 in. wg pressure differential.
g. Shall be capable of introducing up to 100% outdoor air.
h. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air.
i. Shall be designed to close damper(s) during loss-- of --power situations with spring return built into motor.
j. Dry bul b outdoor air temperature sensor shall be provided as standard. Outdoor air sensor setpoint shall be
adjustable and shall ra nge from 40 to 100_F/4to38_C. Additional sensor options shall be available as ac-
cessories.
k. The economizer controller shall also provide control of an accessory power exhaust unit function. Factory set
at 100%, with a range of 0% to 100%.
l. The economizer shall maintain mi nimum airflow into the building during occupied period and provide design
ventilation rate for full occupancy. A remote potentiometer may be used to override the damper setpoint.
m. Dampers shall be completely closed when the unit is in the unoccupied mode.
n. Economizer controller shall accept a 2--10 Vdc CO
sensor input for IAQ/DCV control. In this mode, dampers
2
shall modulate the outdoor air damper t o provide ventilation based on the sensor input.
o. Compressor l ockout sensor shall open at 35_F(2_C) and close closes at 50_F(10_C).
p. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be acceptable.
q. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the exhaust
fan contact is closed.
2. Two-- Position Damper
a. Damper shall be a Two--Position Damper. Damper travel shall be from the full closed position to the field ad-
justable %--open setpoint.
b. Damper shall include adjustable damper travel from 25% to 100% (full open).
c. Damper shall include single or dual blade, gear driven dampers and actuator motor.
d. Actuator shall be direct coupled to damper gear. No linkage arms or control rods shall be acceptable.
e. Damper will admit up to 100% outdoor air for applicable rooftop units.
f. Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.
g. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.
h. Outside air hood shall include aluminum water entrainment filter.
90
Page 91
3. Manual damper
a. Manual damper package shall consist of damper, air inlet screen, and rain hood which can be preset to admit
up to 25 or 50% outdoor air for year round ventilation.
4. Perfect Humidity System:
a. The Perfect Humidity System shall be factory installed in single stage 580J04--07 and two stage 580J08--14
models with RTPF (round tube plate tin) condenser coils, and shall provide greater dehumidification of t he
occupied space by two modes of dehumidification operations in addition to its normal design cooling mode:
(1.) Subcooling mode further sub cools the hot liquid refrigerant leaving the condenser coil when both temperat-
ure and humidity in the space are not satisfied.
(2.) Hot ga s reheat mode shall mix a portion of the hot gas from the discharge of the compressor with the hot
liquid refrigerant leaving t he condenser coil to create a two--phase heat transfer in the system, resulting in a
neutral leaving air temperature when only humidity in the space is not satisfied.
(3.) Includes head pressure controller.
5. Head Pressure Control Package
a. Controller shall control coil head pressure by condenser fan speed modulation or condenser fan cycling and
wind baffles.
b. Shall consist of solid--state control and conde nser coil temperature sensor to maintain condensing temperature
between 90_F(32_C) and 110_F(43_C) at outdoor ambient temperatures down to --20_F(--29_C).
6. Propane Conversion Kit
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit for use
with liquefied propane, up to 2000 ft (610m) elevation.
b. Additional accessory kits may be required for applications a bove 2000 ft (610m) elevation.
7. Flue Shield
a. Flue shield shall provide protection from the hot sides of the gas flue hood.
8. Condenser Coil Hail Guard Assembly
a. Shall protect against damage from hail.
b. Shall be either hood style or louvered.
9. Unit--Mounted, Non--Fused Disconnect Switch (Available on units with MOCP’s of 80 amps or less):
a. Switch shall be factory insta lled, int ernally mounted.
b. National Electric Code (NEC) and UL approved non--fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit.
d. Shall provide local shutdown and lockout capability.
10. Convenience Outlet:
a. Powered convenience outlet.
(1.) Outlet shall be powered from main line power to the rooftop unit.
(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by
code. If outlet i s powered from load side of disconnect, unit electrical ratings shall be UL certified and
rated for additional outlet amperage.
(3.) Outlet shall be factory installed and internally mounted with easily accessible 115--v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Voltage required to operate convenie nce outlet shall be provided by a factory installed step--down trans-
former.
(6.) Outlet shall be accessible from outside the unit.
(7.) Outlet shall include a field installed “Wet in Use” cover.
b. Non--Powered convenience outlet.
(1.) Outlet shall be powered from a separate 115/120v power source.
(2.) A tra nsformer shall not be included.
(3.) Outlet shall be factory installed and internally mounted with easily accessible 115--v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Outlet shall be accessible from outside the unit.
(6.) Outlet shall include a field installed “Wet in Use” cover.
580J
91
Page 92
580J
c. Disconnect Switch Bracket
(1.) Provides a pre--engineered and sized mounting bracket for applications requiring a unit mounted fused
disconnect of greater than 100 amps. Bracket assures that no damage will occur to coils when mounting
with screws and other fasteners.
11. Flue Discharge Deflector:
a. Flue discharge deflector shall direct unit exhaust vert ically instead of horizontally.
b. Deflector shall be defined as a “natural draft” device by the National Fuel and Gas (NFG) code.
12. Thru--the--Base Connectors:
a. Kits shall provide connectors to permit gas and electrical connections to be brought to the unit through the
unit basepan.
b. Minimum of four c onnection locations per unit.
13. Supply Duct Cover (16 size only):
a. Required when field converting the fact ory standard vertical duct supply to horizontal duct supply configura-
tion. One required per unit.
14. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economizer.
b. Independent modules for vertical or horizontal return configurations shall be available.
c. Horizontal power exhaust shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized when
dampers open past the 0--100% adjustable setpoint on the economizer control.
15. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the
exhaust air without supply air contamination.
b. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
16. High Altitude Gas Conversion Kit:
a. Package shall contain all the necessary hardware and instructions to convert a standard natural gas unit to op-
erate from 2000--7000 ft (610 to 2134m) elevation with natural gas or from 0--7000 ft (90--2134m) e levation
with liquefied propane.
17. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in conjunction
with a return air enthalpy sensor, the unit will provide differential enthalpy control. The sensor allows the unit
to determine if outside air is suitable for free cooling.
18. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an out door air e nthalpy sensor to provide dif-
ferential enthalpy control.
19. Indoor Air Quality (CO
)Sensor:
2
a. Shall be a ble to provide demand ventilation indoor air quality (IAQ) control.
b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The setpoint
shall have adjustment capability.
20. Smoke detectors (factory installed only):
a. Shall be a Four--Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift--free sensitivity.
c. Shall use magnet-- activated test/reset sensor switches.
d. Shall have tool-- less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
(1.) One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire
alarm control panel.
(2.) Two Form--C auxiliary alarm relays for interface with rooftop unit or other equipment.
(3.) One Form--C supervision (trouble) relay to control the operation of the Trouble LED on a remote test/reset
station.
(4.) Capable of direct connection to two individual detector modules.
(5.) Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications
92
Page 93
21. Winter start kit
a. Shall contain a bypass device around t he low pressure switch.
b. Shall be required when mechanical cool ing is required down to 25_ F(--4_C).
c. Shall not be required to operate on an economizer when below an outdoor ambient of 40_F(4_C).
22. Time Guard
a. Shall prevent compressor short--cycling by providing a 5--minute delay (±2 minutes) before restarting a com-
pressor after shutdown for any reason.
b. One device shall be required per compressor.
580J
93
Page 94
580J
E2011 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231Printed in U.S.A.Edition Date: 01/11
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without inc ur ring obligations.
94
Catalog No. PDS580J--- 10
Replaces: PDS580J--- 08
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.