COMMERCIAL AIR-COOLED
CONDENSING UNITS WITH
524A AIR-HANDLING UNITS
569D072-120
576C120
569F120
Models 566D, 566E, 569D,
569F, 576C
with 524A
6to20Tons
524A072-300
FEATURES/BENEFITS
These dependable split systems match Bryant’s indoor-air handlers and direct-expansion coils with outdoor condensing units
for a wide selection of commercial cooling solutions.
CONSTRUCTED FOR LONG LIFE — The569D(singlecircuit, scroll compressor), 576C (single circuit semi-hermetic
compressor), 569F/566E (dual circuit, scroll compressor) and
566D (semi-hermetic compressor) models are designed and
built to last. The copper tube-aluminum fin outdoor coil
construction provides years of trouble-free operation. Where
conditions require them, E-coated coils and pre-coated fin coils
are also available. Cabinets are constructed of prepainted
galvanized steel, delivering unparalleled protection from the
environment. Inside and outside surfaces are protected to
ensure long life, good looks, and reliable operation. Safety controls are used for enhanced system protection and reliability.
EFFICIENT OPERATION — Building owners will appreciate
the high unit EERs (Energy Efficiency Ratios) offered by these
condensing units. These units provide greater efficiency than
similar units in the marketplace, which translates into yearround operating savings.
CONTROLS FOR PERFORMANCE DEPENDABILITY — The
condensing units offer the building owner operating controls
and components designed for performance dependability. The
highly efficient hermetic and semi-hermetic compressors are
engineered for long life and durability. The compressors
include overload protection and vibration isolation for enhancement of quiet operation. The high-pressure switch protects the
entire refrigeration system from abnormally high operating
566D150-240
566E150-240
pressures. A low-pressure switch protects the system from
low-pressure conditions, including loss of charge.
The 569F120 and 566E150-240 units feature 2 scroll compressors and 2 refrigerant circuits that provide continuous air
conditioning and design flexibility. These units also include
Cycle-LOC™ anti-short-cycling protection which helps to
protect the units against compressor failure.
All units include a crankcase heater to eliminate liquid slugging
at start-up. Units with semi-hermetic compressors are also
equipped with an oil-level sight glass.
Latest safety standards are assured through UL and UL
Canada approvals.
INNOVATIVE BRYANT PACKAGED AIR HANDLERS ARE
CUSTOM MATCHED TO THE CONDENSING UNITS — The
524A Series has excellent fan performance, efficient directexpansion (DX) coils, a unique combination of indoor-air quality features, and easy installation. Its versatility and state-ofthe-art features help to ensure that your split system provides
economical performance now and in the future.
Indoor-Air Quality (IAQ) Features — The unique combination
of IAQ features in the 524A Series air handlers help to ensure
that only clean, fresh, conditioned air is delivered to the occupied space.
Direct-expansion (DX) cooling coils prevent the build-up of
humidity in the room, even during part-load conditions. Unit
sizes of 10 tons and above feature dual-circuit coils for
improved temperature control.
Standard 2-in. disposable filters remove dust and airborne particles from the occupied space for cleaner air.
Form No. PDS 569D.72.2
Thermal insulation contains an EPA-registered immobilized
anti-microbial agent to inhibit the growth of bacteria and fungi.
The pitched, non-corroding drain pan can be adjusted for a
right- or left-hand connection to suit many applications and
provide positive drainage and to prevent standing condensate.
The 524A accessory economizer can provide ventilation air to
improve indoor air quality by using demand control ventilation.
When used in conjunction with a 2 to 10 VDC adapter on the
actuator and a CO
sensor, the economizer admits fresh
2
outdoor air to replace stale, recirculated indoor air as needed.
Economy — The 524A Series packaged air handlers have low
initial costs, and they continue to save money by providing
reduced installation expense and energy-efficient performance.
Quick installation is ensured by the multipoise design. Units can
be installed in either the horizontal or vertical configuration without modifications. Fan motors and contactors are prewired and
thermostatic expansion valves (TXVs) are factory-installed on
all 524A direct-expansion models.
High efficiency, precision-balanced fans minimize air turbulence, surging, and unbalanced operation, cutting operation
expenses.
The economizer accessory precisely controls the blend of outdoor air and room air to achieve comfort levels. When the
outside air enthalpy is suitable, outside air dampers can fully
open to provide “free” cooling without energizing mechanical
cooling.
Rugged Dependability — The 524A series units are made to
last. The die-formed galvanized steel panels ensure structural
integrity under all operating conditions. Galvanized steel fan
housings are securely mounted to a die-formed galvanized
steel fan deck.
Rugged pillow-block bearings (524A150-300) are securely fastened to the solid steel fan shaft with split collets and clamp
locking devices. Smaller unit sizes have spider-type bearings.
Coil Flexibility — Model 524A direct-expansion coils have galvanized steel casings; inlet and outlet connections are on the
same end. The coils are designed for use with Refrigerant 22
3
and have
/8-in. diameter copper tubes mechanically bonded to
aluminum sine-wave fins. The coils include matched, factoryinstalled thermostatic expansion valves (TXVs) with matching
distributor nozzles.
Easier Installation and Service — Themultipoisedesignand
component layout help you to get the unit installed and running
quickly. Units can be converted from horizontal to vertical operation by simply repositioning the unit. Drain pan connections
are duplicated on both sides of the unit. The filters, motor, drive,
TXVs, and coil connections are all easily accessed by removing
a single side panel.
NOTE: Since this data is calculated, these sound power levels may be different than the actual
sound power levels. The accoustic center of the unit is located at geometric center of the unit.
coil protection to site conditions for optimum durability. See
table below. Consult your Bryant representative for further
information.
E-Coated Aluminum-Fin Coils have a flexible and durable
epoxy coating uniformly applied to all coil surfaces. Unlike brittle
phenolic dip and bake coatings, E-coating provides superior
protection with unmatched flexibility, edge coverage, metal
adhesion, thermal performance, and most importantly, corrosion resistance.
E-coated coils provide this protection since all coil surfaces are
completely encapsulated from environmental contamination.
This coating is especially suitable in industrial environments.
Pre-Coated Fin Coils provide protection in mild coastal
environments.
–20 F Low-Ambient Temperature Kit Option (Motormaster®)
(566E, 569D, 569F, 576C Only) controls outdoor-fan motor
operation to maintain the correct head pressure at low outdoor
ambient temperatures.
115-v Convenience Outlet (566E, 569D, 569F, 576C Only) to
power up electric drills, lights, and refrigerant recovery
machines. This means you are no longer required to run a separate 115-v power supply.
Condenser Coils offer several options to match
Non-Fused Disconnect Switch (566E, 569D, 569F, 576C
Only) to remove power locally at the condensing unit. This
switch also includes a power lockout capability to protect the
service person. This lockout switch saves the service person
time and effort because there is no need to access a distant disconnect switch while servicing the unit.
FIELD-INSTALLED ACCESSORIES
Electric Unloader Package (576C120 Only) includes hard-
ware and solenoid valve to convert a pressure-operated
unloader to electric unloading.
–20 F Low-Ambient Temperature Accessory Kit (Motormaster) controls outdoor-fan motor operation to maintain the correct
head pressure at low outdoor ambient temperatures.
Condenser Coil Grille Package protects condensing unit coil
from impact by large objects and vandalism.
Bryant’s Line of Thermostats provide both programmable and
non-programmable capability with the new Debonair®lineof
commercial programmable thermostats. The CommercialElectronic thermostats provide 7-day programmable capability
for economical applications.
Hail Guard Package protects against damage from flying
debris and hail.
Gage Panel Package provides a suction and discharge pressure gage for the refrigerant circuit.
Al — Aluminum
FACTORY-INSTALLED
DURA-SHIELD
COIL PROTECTION
CONDENSER COIL OPTIONS
COPPER-TUBE COILS
DURA-SHIELD
WITH
OPTION
Al Fins (Standard Coils)X
Al Fins, E-CoatedX
Al Fins, Pre-CoatedX
LEGEND
LOW AMBIENT CONTROL
(FACTORY-INSTALLED OR
FIELD-INSTALLED)
Standard
ENVIRONMENT
Mild
Coastal
Industrial/
Coastal
FACTORY-INSTALLED
CONVENIENCE OUTLET
Options and Accessories
4
FACTORY-INSTALLED
DISCONNECT SWITCH
OPTIONS AND ACCESSORIES (cont)
524A-B, C FACTORY-INSTALLED OPTIONS
Alternate Fan Motors and Drives are available to provide the
widest possible range of performance.
High-Capacity 4-Row Coils are available to provide increased
latent and sensible capacities (524A-C).
Prepainted Steel Units are available from the factory for appli-
cations that require painted units. Units are painted with AmericanSterlingGraycolor.
FIELD-INSTALLED ACCESSORIES
Two-Row Hot Water Coils have copper tubes mechanically
bonded to aluminum plate fins and non-ferrous headers.
One-Row Steam Coil has copper tubes and aluminum fins.
The Inner Distributing Tube (IDT) design provides uniform
temperatures across the coil face. The steam coil has a broad
operating pressure range; up to 20 psig (138 kPag) at 260 F
(127 C). The IDT steam coils are especially suited to applications where sub-freezing air enters the unit.
Electric Resistance Heat Coils have an open-wire design and
are mounted in a rigid frame. Safety cutouts for high temperature conditions are standard. Terminal block for single-point
power connection is included.
Economizer (Enthalpy Controlled) provides ventilation air
and “free” cooling if outside ambient temperature and humidity
are suitable.
Discharge Plenum directs the air discharge directly into the
occupied space integral horizontal and vertical louvers enable
redirection of airflow. Accessory is available unpainted or
painted. Field assembly required.
Return-Air Grille provides a protective barrier over the returnair opening and gives a finished appearance to units installed in
the occupied space. Accessory is available unpainted or
painted.
Subbase provides a stable, raised platform and room for condensate drain trap connection for vertical floor-mounted units.
Accessory is available unpainted or painted.
Overhead Suspension Package includes necessary brackets
to support units in horizontal ceiling installations.
Bryant’s Line of Thermostats provide both programmable and
non-programmable capability. The Commercial Electronic
thermostats provide 7-day programmable capability for economical applications.
Condensate Drain Trap includes an overflow shutoff switch
that can be wired to turn off the unit if the trap becomes
plugged. Kit also includes a wire harness that can be connected
to an alarm if desired. The transparent trap is designed for easy
service and maintenance.
UV-C Germicidal Lamps kill mold and fungus, which may grow
on evaporator coil and condensate pan surfaces. The use of
UV-C germicidal lamps eliminates the foul odors that result from
this growth of mold and fungus. It also provides a self-cleaning
function for the evaporator coil and drain pan.
Commercial Programmable
and Non-Programmable Thermostat
5
DISCHARGE
PLENUM
RETURN-AIR
GRILLE
OPTIONS AND ACCESSORIES (cont)
HOT WATER OR
STEAM COIL
SUBBASE
ECONOMIZER
524A with Discharge Plenum,
Return Grille, and Subbase
FAN
COIL
UNIT
FAN COIL
UNIT
524A with Hot Water or Steam Coil
524A with Economizer
FAN COIL UNIT
524A with Condensate Trap
6
SELECTION PROCEDURE
To determine combination ratings for 569D/F, 576C and 566D/E
units matched with 524A Series air handlers, follow these steps:
I DETERMINE COOLING LOAD, EVAPORATOR-AIR
TEMPERATURE, AND QUANTITY.
Given:
Total Cooling Capacity
Required(TC)...................... 127,000Btuh
Sensible Heat Capacity
Required(SHC)..................... 95,000Btuh
CompressorType ...........................Scroll
Temperature Air Entering Condenser (Edb). . . . . . . . 95 F
For this example, select a 569D120 matched with a
524A-C120 with high-capacity 4-row coil This 569D120/
524A-C120 condensing unit air-handler combination
provides 130,000 Btuh of total cooling capacity and
98,200 Btuh of sensible capacity at the given conditions. If
other temperatures or airflow values are required, interpolate the values from the combination ratings.
III DETERMINE SIZES OF LIQUID AND SUCTION LINES.
Enter Refrigerant Piping Sizes table. The sizes shown are
based on an equivalent length of pipe. This equivalent
length is equal to the linear length of pipe indicated at the
top of each sizing column, plus a 50% allowance for fitting
losses. (For a more accurate determination of actual
equivalent length in place of using the estimated 50%
value, refer to a standard refrigeration piping practice.) For
this example, note in the linear length column that the
1
proper pipe size is
/2in. for the liquid line and 13/8in. for
the suction line.
IV DETERMINEFANRPMANDBHP(BRAKE
HORSEPOWER).
At the Air Handler Fan Performance table enter at 524AC120 with high capacity coil at 4000 cfm and move to the
External Static Pressure (ESP) column. Note that the conditions require 803 rpm at 1.77 bhp.
V DETERMINE MOTOR AND DRIVE.
Enter the Fan Motor Data tables and find the standard
motor for 524A-C120 unit rated at 2.4 Hp. Since the bhp
required is 1.77, a standard motor satisfies the requirement and should be used.
Next, find the type of drive that satisfies the 803 rpm
requirement in the Drive Data tables. For the 524A-C120
unit, the Standard Drive table on shows an rpm range of
666-863. Since the rpm required is 803, the standard drive
satisfies the requirement and should be used. Select the
standard motor and standard drive combination (option
code GC or ED).
7
CONTROLS
OPERATING SEQUENCES
569D072-120, 576C120 — At start-up, the thermostat calls for
cooling. With all safety devices satisfied, the compressor
contactor and fan contactor energize, causing the compressor
and outdoor-fan motor to operate. Thermostat contacts
energize, allowing the field-supplied and field-installed indoorfan contactor to function. A field-supplied and field-installed liquid line valve also opens, allowing the system to function in
Cooling mode. As cooling demand is satisfied, the thermostat
contacts break, deenergizing the contactor and causing the
system to shut off. The liquid line solenoid valve closes, minimizing the potential for refrigerant migration. The compressor
does not restart until the thermostat again calls for cooling. The
system is protected with a safety circuit so that the system will
not start if a fault exists (i.e., high or low pressure fault). To reset
the safety circuit, set the thermostat to eliminate the cooling
demand, then return to original set point. This should be done
only once, and if system shuts down due to the same fault,
determine the problem before attempting to restart the system.
566D150-240 — When the first stage of cooling thermostat
closes, the timer starts. After approximately 3 seconds, the
timer activates the compressor and fan motor no. 1 contactors.
When the liquid pressure builds to approximately 257 psig, fan
motor no. 2 is energized.
When there is demand for additional cooling capacity, the
second stage of the cooling thermostat closes, energizing a
field-supplied liquid line solenoid (LLS) valve, which opens. This
increases the suction pressure, causing the compressor to
operate at higher capacity (compressor loads).
When the fan switch is set at AUTO, the indoor-air fan cycles
with the compressor. When the switch is set at CONT, the
indoor-air fan runs continuously.
At shutdown, the Time Guard II timer prevents the compressor
from restarting for approximately 5 minutes.
In addition, an LLS valve wired in parallel with the compressor
contactor coil shuts off the liquid line to prevent refrigerant
migration back to the compressor during the off cycle.
569F120 — When the thermostat calls for stage one cooling at
start-up, and all safety devices are satisfied, the compressor
contactor no. 1 (C1) energizes causing compressor no. 1 and
outdoor-fan motor no. 1 to start (the indoor-fan contactor should
be wired to start at the same time as the compressor). The
liquid line solenoid (LLS) valve will open when compressor no. 1
starts, allowing refrigerant to flow in the system.
When the thermostat calls for stage two cooling, compressor
contactor no. 2 (C2) energizes causing compressor no. 2 and
outdoor-fan motor no. 2 to start. As the cooling demand
decreases, stage two on the thermostat opens, causing
compressor no. 2 and outdoor-fan motor no. 2 to shut down. As
the cooling continues to decrease, stage one of the thermostat
opens causing compressor no. 1 and outdoor-fan motor no. 1 to
shut down. The LLS valve for each compressor will close when
the associated compressor stops, minimizing the potential for
refrigerant migration during the off cycle.
The indoor-fan motor will stop if the thermostat is set to AUTO
and will continue to operate if the thermostat is set to CONT.
TM
Each compressor is protected with a Cycle-LOC
device so
that the compressor will not operate if there is a high-pressure
fault, low pressure fault, or a compressor is off due to internal
line break overcurrent/overtemperature protection. To reset the
Cycle-LOC device, set the thermostat higher to remove the
cooling demand, then return to the original set point. This
should be done only once. If the system shuts down with the
same fault, the cause for the fault should be determined and
corrected before the a Cycle-LOC device is reset again.
566E150-240 — At start-up, when the thermostat calls for first
stage cooling and all safety devices are satisfied, the compressor contactor (C1) energizes causing compressor no. 1 and fan
motor no. 1 to start. Fan motor no. 2 will start when the fan
cycling pressure switch (FCPS) closes as discharge pressure
builds (refer to physical data table for FCPS specifications).
With the indoor-fan contactor wired to TB2-4 and TB2-9
contacts on the terminal block, the indoor fan will also start with
the compressor. The liquid line solenoid (LLS) valve will open
when compressor no. 1 starts, allowing refrigerant to flow in the
system.
When the thermostat calls for stage two cooling, compressor
contactor no. 2 (C2) energizes causing compressor no. 2 to
start. As the cooling demand decreases, stage two on the
thermostat opens, causing compressor no. 2 to shut down. As
the cooling continues to decrease, stage one of the thermostat
opens causing compressor no. 1 and outdoor-fan motor to shut
down. The LLS valve for each compressor will close when the
associated compressor stops, minimizing the potential for
refrigerant migration during the off cycle.
The indoor-fan motor will stop if the thermostat is set to AUTO
and will continue to operate if the thermostat is set on CONT.
Each compressor is controlled by the thermostat so they will not
start until there is a demand from the thermostat. Each
compressor is protected with a Cycle-LOC device so that the
compressor will not operate if there is a high-pressure fault,
low-pressure fault, or compressor is off due to internal line
break overcurrent/overtemperature protection. To reset the a
Cycle-LOC device, set the thermostat higher to remove the
cooling demand, then return to the original set point. This
should be done only once. If the system shuts down with the
same fault, the cause for the fault should be determined and
corrected before the a Cycle-LOC device is reset again.
8
NOTES:
1. If any of the original wire furnished must be
replaced, it must be replaced with type 90° C
wire or its equivalent.
Motor HP (rpm)
Diameter22222222
Nominal Airflow (CfmTotal)5400650065006500
1
/
8
1
/
4
1
/
4
1
/
4
Watts (Total)340570570570
CONDENSER COIL (Qty)22
Face Area (sqfttotal)29.229.229.2
Rows...Fins/in.1...172...172...172...172...17
Storage Capacity (lb)**17.334.234.234.217.1 (ea)
CONTROLS
Pressurestat Settings (psig)
High Cutout428 ± 10428 ± 10428 ± 10
Cut-in320 ± 20320 ± 20320 ± 20
Low Cutout27 ± 327 ± 327 ± 3
Cut-in44 ± 544 ± 544 ± 5
DISCHARGE GAS THERMOSTAT (°F)22
Cutout—270 ± 9———
Cut-in—190 ± 13———
PRESSURE RELIEF
LocationSuction Line
Temperature (F)200
PIPING CONNECTIONS (in. ODM)
Qty...Suction1...11/
Qty...Liquid
1...
8
3
/
8
*Unit is factory-supplied with holding charge only.
†Typical operating charge with 25 ft of interconnecting piping.
**Storage capacity of condenser coil with coil 80% full of liquid R-22 at
95 F.
1...11/
1...3/
8
8
1...13/
1...1/
8
2
1...13/
1...1/
8
2
NOTE: Unit 576C120 has one step of unloading. Full load is at 100% of
capacity, and one step of unloading is 67% capacity. Unit 576C120 has
the following unloader settings: load is 70 ± 1 psig and unload is 60 ±
2psig.
1
/
2...11/
2...3/
4
8
8
12
DIMENSIONS
569D072-120, 576C120, 569F120
50TFQ004-012
UNIT
Standard Unit Weight Corner W Corner X Corner Y Corner ZCenter of Gravity
FLA— Full Load Amps
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
RLA — Rated Load Amps
090
120
LEGEND*Units are suitable for use on electrical systems where voltage supplied
FACTORY-
INSTALLED
OPTION
NONE OR DISCONNECT
CONVENIENCE OUTLET30.635
NONE OR DISCONNECT
CONVENIENCE OUTLET15.020
NONE OR DISCONNECT
CONVENIENCE OUTLET12.015
NONE OR DISCONNECT
CONVENIENCE OUTLET39.860
NONE OR DISCONNECT
CONVENIENCE OUTLET19.630
NONE OR DISCONNECT
CONVENIENCE OUTLET15.520
NONE OR DISCONNECT
CONVENIENCE OUTLET55.170
NONE OR DISCONNECT
CONVENIENCE OUTLET25.130
NONE OR DISCONNECT
CONVENIENCE OUTLET19.525
NONE OR DISCONNECT
CONVENIENCE OUTLET52.870
NONE OR DISCONNECT
CONVENIENCE OUTLET26.135
NONE OR DISCONNECT
CONVENIENCE OUTLET20.330
NONE OR DISCONNECT
CONVENIENCE OUTLET43.850
NONE OR DISCONNECT
CONVENIENCE OUTLET21.625
NONE OR DISCONNECT
CONVENIENCE OUTLET17.520
NOMINAL
VO LTAGE
V-P h- HzMI NMAXRLALRAFLA (ea)LRA (ea)MCAMOCP
208/230-3-6018725419.21460.91.6
460-3-604185069.6730.40.9
575-3-605236327.758.40.40.9
208/230-3-6018725425.61901.53.1
460-3-6041850612.8950.71.9
575-3-6052363210.2760.71.9
208/230-3-6018725437.82391.53.1
460-3-6041850617.21250.71.9
575-3-6052363213.4800.71.9
208/230-3-60187254361981.53.1
460-3-6041850618990.71.9
575-3-6052363214790.71.9
208/230-3-60187254161251.53.1
460-3-60418506866.50.71.9
575-3-605236326.4500.71.9
VO LTAGE
RANGE*
COMPRESSOR
to the unit terminals is not below or above the listed limits.
NOTES:
1. The MCA and MOCP values are calculated in accordance with the
NEC, Article 440.
2. Motor RLA and LRA values are established in accordance with
Underwriters’ Laboratories (UL), Standard 1995.
3. The 575-v units are UL, Canada-listed only.
4. Convenience outlet is available as either a factory-installed option
or a field-installed accessory and is 115-v, 1 ph, 60 Hz.
FAN M OTO RS
(Qty 2)
POWER
SUPPLY
25.835
12.820
10.215
35.060
17.430
13.820
50.360
22.930
17.825
48.060
23.935
18.630
39.050
19.425
15.820
26
APPLICATION DATA — 569D072-120, 576C090-120, 569F120
OPERATING LIMITS
Maximum Cooling Outdoor115 F
Minimum Outdoor Ambient
Minimum Return-Air
Temperature
Maximum Return-Air
Temperature
Normal Acceptable Saturation
Suction Temperature Range
Maximum Discharge
Temperature
Minimum Discharge Superheat60 F
NOTES:
1. Select air handler at no less than 300 cfm/ton (nominal condensing unit capacity).
2. Total combined draw of the field-supplied liquid line solenoid valve
and air handler fan contactor must not exceed 22 va. If the specified va must be exceeded, use a remote relay to control the load.
1. LIQUID LINE — For applications with liquid lift greater than
1
20 ft, use
liquid line where
/2-in. liquid line where3/8in.isshown;use5/8-in.
1
/2in. is shown. The maximum liquid lift is
60 ft.
MAXIMUM REFRIGERANT CHARGE
UNIT
SIZE
569D
07217.3
09034.2
12034.2
576C12034.2
569F120(2) 17.1
2. REFRIGERANT PIPING — It is recommended that the
refrigerant piping for all commercial split systems include a
liquid line solenoid valve, a liquid line filter drier, and a sight
glass.
For refrigerant lines longer than 75 lineal ft, a liquid line
solenoid valve and a suction accumulator are required.
Refer to the Refrigerant Specialties table.
See Minimum Outdoor-Air
Operating Temperature
table at right.
LLSV — Liquid Line Solenoid Valve
NEC — National Electrical Code
TXV—Thermostatic Expansion Valve
*Field supplied.
†Accessory item.
NOTES:
1. All piping must follow standard refrigerant piping techniques. Refer to Carrier System
Design Manual for details.
2. All wiring must comply with the applicable local and national codes.
3. Wiring and piping shown are general points-of-connection guides only and are not
intended for, or to include all details for, a specific installation.
4. Liquid line solenoid valve (solenoid drop control) is recommended to prevent refrigerant migration to the compressor.
5. Internal factory-supplied TXVs not shown.
Rooftop Installation — 569D072-120, 576C120
28
GUIDE SPECIFICATIONS — 569D072-120, 576C120
COMMERCIAL AIR-COOLED CONDENSING UNITS
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 6 TO 10 TONS, NOMINAL
BRYANT MODEL NUMBERS: 569D, SIZES 072-120
576C, SIZE 120
PART 1 — GENERAL
1.01 SYSTEM DESCRIPTION
Outdoor-mounted, air-cooled condensing unit suitable for
on-the-ground or rooftop installation. Unit shall consist of a
reciprocatingair-conditioningcompressorassembly
(576C) or scroll compressor (569D), an air-cooled coil,
propeller-type condenser fan, and a control box. Unit shall
discharge supply air upward as shown on contract drawings. Unit shall be used in a refrigeration circuit matched
with a packaged air-handling unit.
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI latest
revisions.
B. Unit construction shall comply with ANSI/ASHRAE 15
safety code latest revision and comply with NEC.
C. Unit shall be constructed in accordance with UL 1995
standard and shall carry the UL and UL, Canada label.
D. Unit cabinet shall be capable of withstanding 500-hour
salt spray exposure per ASTM B117 (scribed specimen).
E. Air-cooled condenser coils for semi-hermetic compressor
units (576C) shall be leak tested at 150 psig and pressure
tested at 480 psig. Air-cooled condenser coils for scroll
compressor units (569D) shall be leak tested at 200 psig,
and pressure tested at 428 psig.
F. Unit shall be manufactured in a facility registered to
ISO 9001:2000 manufacturing quality standard.
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be shipped as single package only, and shall be
stored and handled according to unit manufacturer’s
recommendations.
1.04 WARRANTY (FOR INCLUSION BY SPECIFYING
ENGINEER.)
PART 2 — PRODUCTS
2.01 EQUIPMENT
A. General:
Factory-assembled, single piece, air-cooled condensing
unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, compressor, holding
charge (R-22), and special features required prior to field
start-up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with a prepainted baked
enamel finish.
2. A heavy-gage roll-formed perimeter base rail with
forklift slots and lifting holes shall be provided to facilitate rigging.
C. Fans:
1. Condenser fans shall be direct driven, propeller-type,
discharging air vertically upward.
2. Fan blades shall be balanced.
3. Condenser fan discharge openings shall be
equipped with PVC coated steel wire safety guards.
4. Condenser fan and motor shaft shall be corrosion
resistant.
D. C o mpresso r :
1. Compressor shall be of the scroll type (569D) or
semi-hermetic reciprocating type (576C).
2. Compressors shall be mounted on vibration
isolators.
3. Compressors shall include overload protection.
4. Compressors shall be equipped with a crankcase
heater.
5. Compressor shall be equipped with internal high discharge temperature protection (569D072 and 120
only).
6. Compressor shall unload using suction cutoff unloading (576C120 only). Electric solenoid unloading
available as an accessory.
E. Condenser Coil:
1. Condenser coil shall be air-cooled and circuited for
integral subcooler.
2. Coil shall be constructed of aluminum fins (copper
fins optional) mechanically bonded to internally
grooved seamless copper tubes which are then
cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigeration circuit components shall include liquid line
service valve, suction line service valve, liquid filter drier,
a full charge of compressor oil, and a holding charge of
refrigerant. Unit 569D120 shall include an accumulator.
Units with semi-hermetic compressors (576C) shall have
oil-level sight glass and all units shall have crankcase
heater.
G. Controls and Safeties:
1. Minimum control functions shall include:
a. Control wire terminal blocks.
b. Compressor lockout on auto-reset safety until
reset from thermostat.
2. Minimum safety devices which are equipped with
automatic reset (after resetting first at thermostat),
shall include:
a. High discharge pressure cutout.
b. Low Pressure cutout.
c. High discharge temperature cutout (569D090
only).
H. Operating Characteristics:
1. The capacity of the condensing unit shall meet or
exceed Btuh at a suction temperature of ______ F.
The power consumption at full load shall not exceed
______ kW.
2. The combination of the condensing unit and the
evaporator or fan coil unit shall have a total net cooling capacity of ______ Btuh or greater at conditions
of ______ cfm entering-air temperature at the evaporator at ______ F wet bulb and ______ F dry bulb,
and air entering the condensing unit at ______ F.
3. The system shall have an EER of ______ Btuh/Watt
or greater at standard ARI conditions.
I. Electrical Requirements:
1. Nominal unit electrical characteristics shall be
______ v, 3-ph, 60 Hz. The unit shall be capable of
satisfactory operation within voltage limits of
______ v to ______ v.
2. Unit electrical power shall be single-point connection.
3. Unit control circuit shall contain a 24-v transformer
for unit control.
Low-ambient control shall be available as a factoryinstalled option or a field-installed accessory and
shall regulate speed of condenser-fan motor in
response to the saturated condensing temperature
of the unit. The control shall maintain correct condensing pressure at outdoor temperatures down to
–20 F (fan motor change required for 569D and
576C units).
a. Pre-Coated Aluminum-Fin Coils:
Shall have a durable epoxy-phenolic coating to
provide protection in mildly corrosive coastal environments. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to
create an inert barrier between the aluminum
fin and copper tube. Epoxy-phenolic barrier shall
minimize galvanic action between dissimilar
metals.
b. E-Coated Aluminum-Fin Coils:
Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without
material bridging between fins. Coating process
shall ensure complete coil encapsulation. Color
shall be high gloss black with gloss requirements
of 60° of 65-90% per ASTM D523-89. Uniform dry
film thickness from 0.8 to 1.2 mil on all surface
areas including fin edges. Superior hardness characteristics of 2H per ASTM D3363-92A and cross
hatch adhesion of 4B-5B per ASTM D3359-93.
Impact resistance shall be up to 160 in./lb (ASTM
D2794-93). Humidity and water immersion resistance shall be up to a minimum of 1000 and
250 hours respectively (ASTM-D2247-92 and
ASTM D870-92). Corrosion durability shall be confirmed through testing to no less than 1000 hours
salt spray per ASTM B117-90. Coil construction
shall be aluminum-fins mechanically bonded to
copper tubes.
3. Thermostat Control Accessory:
a. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
b. Commercial Electronic Non-programmable Ther-
mostat with auto-changeover, multi-stage capacity,
and large LCD display.
5. Condenser Coil Grille Accessory:
Grille shall add decorative appearance to unit and
protect condenser coil after installation.
6. Electric Solenoid Unloader Accessory:
Electric unloader valve piston, coil, and hardware
shall be supplied to convert the pressure-operated
compressor unloader to electric unloading (576C120
only).
7. Unit-Mounted, Non-Fused Disconnect Switch:
Shall be factory-installed, internally mounted. NEC
and UL approved non-fused switch shall provide unit
power shutoff. Shall be accessible from outside the
unit and shall provide power off lockout capability.
Not to be used when rooftop electrical rating
exceeds 80 amperes.
8. Convenience Outlet:
Shall be factory-installed and internally mounted
with easily accessible 115-v female receptacle. Shall
include 15 amp GFI receptacle with independent
fuse protection. Voltage required to operate convenience outlet shall be provided by a factory-installed
step-down transformer. Shall be accessible from outside the unit.
1.01 SYSTEM DESCRIPTION
Outdoor-mounted, air-cooled condensing unit suitable for
on-the-ground or rooftop installation. Unit shall have
2 independent refrigeration circuits. Unit shall consist of
dual scroll compressors, air-cooled coils, propeller-type
condenser fans, and a control box. Unit shall discharge
supply air upward as shown on contract drawings. Unit
shall be used in a refrigeration circuit matched with a packaged air-handling unit.
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standard 210/
240, latest revision.
B. Unit construction shall comply with ANSI/ASHRAE 15
safety code latest revision and comply with NEC.
C. Unit shall be constructed in accordance with UL 1995
standard and shall carry the UL and UL, Canada label.
D. Unit cabinet shall be capable of withstanding 500-hour
salt spray exposure per ASTM B117 (scribed specimen).
E. Air-cooled condenser coils shall be leak tested at
200 psig, and pressure tested at 428 psig.
F. UnitshallbemanufacturedinafacilityregisteredtoISO
9001:2000 manufacturing quality standard.
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be shipped as single package only, and shall be
stored and handled according to unit manufacturer’s
recommendations.
1.04 WARRANTY (FOR INCLUSION BY SPECIFYING
ENGINEER.)
PART 2 — PRODUCTS
2.01 EQUIPMENT
A. General:
Factory-assembled, single piece, air-cooled condensing
unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, compressor, holding
charge (R-22), and special features required prior to field
start-up.
B. Unit Cabinet:
1. Unit cabinet shall be constructed of galvanized steel,
bonderized and coated with a prepainted baked
enamel finish.
2. A heavy-gage roll-formed perimeter base rail with
forklift slots and lifting holes shall be provided to facilitate rigging.
C. Fans:
1. Condenser fans shall be direct driven, propeller-type,
discharging air vertically upward.
2. Fan blades shall be balanced.
3. Condenser fan discharge openings shall be
equipped with PVC coated steel wire safety guards.
4. Condenser fan and motor shaft shall be corrosion
resistant.
D. C ompresso r :
1. Compressors shall be of the hermetic scroll type.
2. Compressors shall be mounted on vibration isolators.
3. Compressors shall include overload protection.
4. Compressors shall be equipped with a crankcase
heater.
5. Compressors shall be equipped with high discharge
temperature protection.
E. Condenser Coil:
1. Condenser coil shall be air-cooled and circuited for
integral subcooler.
2. Coil shall be constructed of aluminum fins (copper
fins optional) mechanically bonded to internally
grooved seamless copper tubes which are then
cleaned, dehydrated, and sealed.
F. Refrigeration Components:
Refrigeration circuit components shall include liquid
line service valve, suction line service valve, a full
charge of compressor oil, and a holding charge of
refrigerant.
G. Controls and Safeties:
1. Minimum control functions shall include:
a. Control wire terminal blocks.
b. Compressor lockout on auto-reset safety until
reset from thermostat.
2. Minimum safety devices which are equipped with
automatic reset (after resetting first at thermostat),
shall include:
a. High discharge pressure cutout.
b. Low pressure cutout.
H. Operating Characteristics:
1. The capacity of the condensing unit shall meet or
exceed _____ Btuh at a suction temperature of
_____ F. The power consumption at full load shall not
exceed _____ kW.
2. The combination of the condensing unit and the
evaporator or fan coil unit shall have a total net cooling capacity of _____ Btuh or greater at conditions of
_____ cfm entering-air temperature at the evaporator
at _____ F wet bulb and _____ F dry bulb, and air
entering the condensing unit at _____ F.
3. The system shall have an EER of _____ Btuh/ Watt
or greater at standard ARI conditions.
I. Electrical Requirements:
1. Nominal unit electrical characteristics shall be _____
v, 3-ph, 60 Hz. The unit shall be capable of satisfactory operation within voltage limits of _____ v to
_____ v.
2. Unit electrical power shall be single-point connection.
3. Unit control circuit shall contain a 24-v transformer
for unit control.
J. Special Features:
1. Low-Ambient Temperature Control:
A low-ambient temperature control shall be available
as a factory-installed option or as a field-installed
accessory. This low-ambient control shall regulate
speed of the condenser-fan motors in response to
the saturated condensing temperature of the unit.
The control shall maintain correct condensing pressure at outdoor temperatures down to –20 F.
2. Gage Panel Package:
Gage panel package shall include a suction and discharge pressure gage.
569D072-120, 576C120, 569F120
50TFQ004-012
31
50TFQ004-012
569D072-120, 576C120, 569F120
GUIDE SPECIFICATIONS — 569F120 (cont)
3. Optional Condenser Coil Materials:
a. Pre-Coated Aluminum-Fin Coils:
Shall have a durable epoxy-phenolic coating to
provide protection in mildly corrosive coastal
environments. Coating shall be applied to the
aluminum fin stock prior to the fin stamping
process to create an inert barrier between the
aluminum fin and copper tube. Epoxy-phenolic
barrier shall minimize galvanic action between
dissimilar metals.
b. E-Coated Aluminum-Fin Coils:
Shall have a flexible epoxy polymer coating
uniformly applied to all coil surface areas without
material bridging between fins. Coating process
shall ensure complete coil encapsulation. Color
shall be high gloss black with gloss requirements
of 60° of 65 to 90% per ASTM D523-89. Uniform
dry film thickness from 0.8 to 1.2 mil on all surface
areas including fin edges. Superior hardness
characteristics of 2H per ASTM D3363-92A
and cross hatch adhesion of 4B-5B per ASTM
D3359-93. Impact resistance shall be up to
160 in./lb (ASTM D2794-93). Humidity and water
immersion resistance shall be up to a minimum
of 1000 and 250 hours respectively (ASTM
D2247-92 and ASTM D870-92). Corrosion durability shall be confirmed through testing to no less
than 1000 hours salt spray per ASTM B117-90.
Coil construction shall be aluminum fins mechanically bonded to copper tubes.
4. Thermostat Controls:
a. Programmable multi-stage thermostat with 7-day
clock, holiday scheduling, large backlit display,
remote sensor capability, and Title 24 compliance.
b. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
6. Condenser Coil Grille:
Grille shall add decorative appearance to unit and
protect condenser coil after installation.
7. Unit-Mounted, Non-Fused Disconnect Switch:
Shall be factory-installed, internally mounted. NEC
and UL approved non-fused switch shall provide unit
power shutoff. Shall be accessible from outside the
unit and shall provide power off lockout capability.
8. Convenience Outlet:
Shall be factory-installed and internally mounted with
easily accessible 115-v female receptacle. Shall
include 15 amp GFI receptacle with independent
fuse protection. Voltage required to operate convenience outlet shall be provided by a factory-installed
step-down transformer. Shall be accessible from outside the unit.
32
MODEL NUMBER NOMENCLATURE
566D E X150 000
––
566D — Commercial Air-Cooled Condensing
Unit With Semi-Hermetic Compressor
566E — Dual Circuit Commercial Air-Cooled
Condensing Unit With Scroll Compressors
Voltage Designation
E — 460-3-60
P — 208/230-3-60
T — 575-3-60
Heating
X—None
*Contact your local representative for more details.
unit terminals is not below or above the listed limits.
†Fuse or HACR circuit breaker.
NOTES:
1. The MCA and MOCP values are calculated in accordance with the National
2. Motor RLA and LRA values are established in accordance with Underwrit-
3. The 575-v units are UL, Canada-listed only.
Fan No.
Electrical Code (NEC), Article 440.
ers’ Laboratories (UL), Standard 1995.
kWMCAMOCP†ICF
1.41
1.41
1.41
69.6100199
87.5125274
93.4150353
566E150-240
FAN M OTO RS
VOLTAGE
RANGE*
Min MaxRLALRARLALRA12MCA MOCP† ICF
COMPRESSOR 1COMPRESSOR 2
unit terminals is not below or above the listed limits.
†Fuse or HACR circuit breaker.
NOTES:
1. The MCA and MOCP values are calculated in accordance with the National
Electrical Code (NEC), Article 440.
2. Motor RLA and LRA values are established in accordance with Underwriters’ Laboratories (UL), Standard 1995.
3. The 575-v units are UL, Canada-listed only.
4. Convenience outlet is available as either a factory-installed option or a fieldinstalled accessory and is 115-v, 1ph, 60 Hz.
Qty 2)
FLA (ea)
Fan No.
kW
POWER
SUPPLY
55.670186
63.580194
27.73590
31.34094
23.13067
25.93070
81.2100236
89.2100244
42.150117
45.760120
31.64097
34.54099
94.1125286
102.0150294
48.460149
52.070153
35.74598
38.550101
566D/E150-240
50TFQ004-012
53
APPLICATION DATA — 566D150-240, 566E150-240
1. INSTALLATION — Select equipment to match or to be
slightly less than peak load. This provides better humidity
control, less unit cycling, and less part-load operation.
When selecting vapor line sizes, oil return must be evaluated, particularly at part-load conditions.
The indoor fan must always be operating when outdoor unit
is operating.
Ductwork should be sized according to unit size, not building load.
To minimize the possibility of air recirculation, avoid the use
of concentric supply/return grilles.
Indoor equipment should be selected at no less than
300 cfm/ton.
OPERATING LIMITS
Maximum Outdoor115 F
Minimum Outdoor Ambient
Minimum Return-Air
Temperature
Maximum Return-Air
Temperature
Normal Acceptable Saturation
Suction Temperature Range
Maximum Discharge
Temperature
Minimum Discharge Superheat60 F
MINIMUM OUTDOOR-AIR OPERATING
TEMPERATURE — 566D150-240 UNITS
See Minimum Outdoor-Air
Operating Temperature
table below.
55 F
95 F
25 to 55 F
295 F
MINIMUM OUTDOOR-AIR OPERATING
TEMPERATURE — 566E150-240 UNITS
MINIMUM
UNIT
566E
FULL LOAD
CAPACITY
(%)
SATURATED COND
TEMPERATURE (F)
OUTDOOR-AIR
TEMPERATURE (F)
Base
Unit
With
Low-Ambient
Control
150
100/509050–20180
240
LIQUID LINE DATA — 566D150-240 UNITS
LIQUID LINE
Max Allow.
Pressure
Drop
(psi)
Tem p
Loss
(°F)
72
UNIT
566D
MAX
ALLOW.
LIFT
(ft)
Max Allow.
15067
18082
24087
NOTE: Data above is for units operating at 45 F saturated suction and
2. REFRIGERANT PIPING — It is recommended that the
refrigerant piping for all commercial split systems include a
liquid line solenoid valve, a liquid line filter drier, and a sight
glass.
For refrigerant lines longer than 75 lineal ft, a liquid line
solenoid valve and a suction accumulator are required.
Refer to the Refrigerant Specialties table.
LLSV
COIL
SIGHT
GLASS
FILTER
DRIER
SUCTION LINE
ACCUMULATOR
54
TXV—Thermostatic
Expansion Valve
Location of One Liquid Line Solenoid
Valve Serving 2 Coil Circuits
APPLICATION DATA — 566D150-240, 566E150-240 (cont)
(Solenoid Drop Control)
REFRIGERANT PIPING SIZES
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
UNIT
566D
0-1516-2526-5051-7576-100
Line Size (in. OD)
LSLSLSL S L S
150
180
240
1
/211/
1
/213/
5
/815/
1
/213/
8
5
/813/
8
5
/815/
8
5
/813/
8
5
/815/
8
7
/815/
8
5
/815/8*7/815/8*
8
7
/815/
8
8
7
/821/
8
8
7
/821/8*
7
/821/
8
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
UNIT
566E
0-2525-5050-7575-100
Line Size (in. OD)
LSLSLSLS
150
1801/
240
1
/
2
2
1
/
2
1
11/
13/
13/
/
8
8
8
11/
2
1
/
13/
2
1
/
13/
2
1
/
8
2
1
/
8
2
5
/
8
8
11/
13/
13/
1
/
8
8
8
11/
2
5
/
5
/
8
13/
8
8
13/
8
8
LEGEND
L—Liquid
S—Suction
Close-coupled.
*Requires a double suction riser if 2 unloaders are used and the evaporator is
below the condensing unit. See Refrigerant Piping Sizes — Double Suction Risers table and Suction Line Piping figure below for more information.
NOTES:
1. Pipe sizes are based on a 2° F loss for liquid lines and a 1.5° F loss for suction lines.
2. Pipe sizes are based on an equivalent length equal to the maximum length
of interconnecting piping plus 50% for fittings. A more accurate estimate
may result in smaller sizes.
REFRIGERANT PIPING SIZES —
DOUBLE SUCTION RISERS
LINEAR LENGTH OF INTERCONNECTING PIPING (FT)
UNIT
566D
1501
180———1
NOTES:
1. See Suction Line Piping figure below for “A,” “B,” and “C” dimensions.
2. No double suction risers are needed for unit size 240.
51-7576-100
Line Size (in. OD)
ABCABC
1
/
13/
8
15/
8
11/
8
13/
8
3
/
15/
8
15/
8
8
21/
8
8
566D/E150-240
50TFQ004-012
TXV—Thermostatic
Face-Split Coil Suction and
Liquid Line Piping
Expansion Valve
55
LEGEND
Suction Riser
A
Suction Riser
B
Suction Line to Condensing Unit
C
Short Vertical Riser Into Condensing Unit:
D
566D150,180 — 1
Without
With
Tr ap
Tr ap
3
/8in. OD
Suction Line Piping
APPLICATION DATA — 566D150-240, 566E150-240 (cont)
MULTIPLE CONDENSING UNIT ARRANGEMENTS*
566D, 566E150-240
566D, 566E150-240
566D, 566E150-240
Space for Service and Airflow
*For clearances between controls and grounded surfaces,
check local codes.
566D,566EDIMENSIONS (ft)
150-240
AB
44
50TFQ004-012
566D/E150-240
56
TYPICAL PIPING AND WIRING
LEGEND
NEC — National Electrical Code
TXV—Thermostatic Expansion Valve
*Field supplied.
Piping
NOTES:
1. All piping must follow standard refrigerant piping techniques.
2. All wiring must comply with the applicable local and national
codes.
3. Wiring and piping shown are general points-of-connection
guides only and are not intended for, or to include all details for, a
specific installation.
4. Liquid line solenoid valve (solenoid drop control) is recommended to prevent refrigerant migration to the compressor.
5. Internal factory-supplied TXVs not shown.
Rooftop Installation — 566D150-240
566D/E150-240
50TFQ004-012
57
TYPICAL PIPING AND WIRING (cont)
50TFQ004-012
566D/E150-240
LEGEND
NEC — National Electrical Code
TXV—Thermostatic Expansion Valve
*Field supplied.
Piping
NOTES:
1. All piping must follow standard refrigerant piping techniques.
2. All wiring must comply with the applicable local and national
codes.
3. Wiring and piping shown are general points-of-connection
guides only and are not intended for, or to include all details for, a
specific installation.
4. Liquid line solenoid valve (solenoid drop control) is recommended to prevent refrigerant migration to the compressor.
1.01 SYSTEM DESCRIPTION
Outdoor-mounted, air-cooled condensing unit suitable for
on-the-ground or rooftop installation. Unit shall consist of a
semi-hermetic reciprocating compressor (566D) or scroll
compressor (566E), an air-cooled coil, propeller-type condenser fans, and a control box. Unit shall discharge supply
air upward as shown on contract drawings. Unit shall be
used in a refrigeration circuit to match a packaged fan coil
unit.
1.02 QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI latest revisions
and shall be certified and listed in the latest ARI directory.
B. UnitshallbemanufacturedinafacilityregisteredtoISO
9001:2000 manufacturing quality standard.
C. Unit construction shall comply with latest edition of ANSI/
ASHRAE and with NEC.
D. Unit shall be constructed in accordance with UL
standards and shall carry the UL and UL, Canada label.
E. Unit cabinet shall be capable of withstanding 500-hour
salt spray exposure per ASTM B117 (scribed specimen).
F. Air-cooled condenser coils shall be leak tested at
150 psig and pressure tested at 480 psig.
1.03 DELIVERY, STORAGE, AND HANDLING
Unit shall be shipped as a single package only, and
shall be stored and handled per manufacturer’s
recommendations.
1.04 WARRANTY (FOR INCLUSION BY SPECIFYING
ENGINEER.)
PART 2 — PRODUCTS
2.01 EQUIPMENT
A. General:
Factory assembled, single piece, air-cooled condensing
unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, compressor, holding
charge (R-22), and special features required prior to field
start-up.
B. Unit Cabinet:
Unit cabinet shall be constructed of G-90 galvanized
steel, bonderized and coated with a prepainted, baked
enamel finish.
C. Fans:
1. Condenser fans shall be direct-drive propeller type,
2. Condenser-fan motor no. 1 shall be ball bearing type
3. Shafts shall have inherent corrosion resistance.
4. Fan blades shall be statically and dynamically
5. Condenser fan openings shall be equipped with
D. C ompresso r s:
1. 566D150-240 Units:
1
/2TO 20 TONS, NOMINAL
566E, SIZES 150-240
discharging air vertically upward.
compatible with accessory low-ambient control.
balanced.
PVC-coated steel wire safety guards.
a. Compressor shall be serviceable, reciprocating,
semi-hermetic type.
b. Compressor shall be equipped with an automati-
cally reversible oil pump, operating oil charge,
suction and discharge shutoff valves, and an
insert-type, factory-sized crankcase heater to
control oil dilution.
c. Compressor shall be mounted on spring vibration
isolators with an isolation efficiency of no less
than 95%.
d. Compressor speed shall not exceed 1750 rpm.
e. Compressor shall unload using suction cutoff
unloading (electrical solenoid unloading shall be
available as an accessory).
f. Compressor shall include overload protection.
g. Compressor shall be equipped with internal high
discharge temperature protection (566E180 and
240 only).
2. 566E150-240 Units:
a. Compressors shall be of the hermetic scroll type.
b. Compressors shall be mounted on vibration
isolators.
c. Compressors shall include overload protection.
d. Compressors shall be equipped with a crankcase
heater.
E. Condenser Coil:
1. Condenser coil shall be air cooled, circuited for integral subcooler.
2. Coil shall be constructed of aluminum fins mechanically bonded to copper tubes which are then
cleaned, dehydrated, and sealed. Copper fins shall
be available as an option.
F. Refrigeration Components:
1. Refrigeration circuit components for 566D units shall
include hot gas muffler, high-side pressure relief
device, liquid line shutoff valve, suction and discharge shutoff valves, holding charge of refrigerant
R-22, and compressor oil.
2. Refrigeration circuit components for 566E units shall
include liquid line service valve, suction line service
valve, a full charge of compressor oil, and a holding
charge of refrigerant.
G. Controls and Safeties:
1. Minimum control functions shall include:
a. Power and control terminal blocks.
b. Compressor cycle delay protection prevents the
compressor from restarting for a minimum of
5 minutes after shutdown.
c. Capacity control on the compressor shall be by
suction cutoff unloader in response to compressor suction pressure. Electric solenoid unloading
shall be available as an accessory (566D unit).
d. Head pressure control by fan cycling. One con-
denser fan shall be cycled by discharge pressure
to maintain proper head pressure.
2. Minimum safety devices shall include:
Automatic reset
a. High discharge-pressure cutout.
b. Low suction pressure cutout.
c. Condenser-fan motors to be protected against
overload condition by internal overloads.
(after resetting first at thermostat)
566D/E150-240
50TFQ004-012
59
Manual reset at the unit
Electrical overload protection through the use of def-
inite-purpose contactors and calibrated, ambient
compensated, magnetic trip circuit breakers. Circuit
breakers shall open all 3 phases in the event of an
overload in any one of the phases or a single-phase
condition.
H. Operating Characteristics:
1. The capacity of the condensing unit shall meet or
exceed_____Btuh at a suction temperature of_____ F.
The power consumption at full load shall not
exceed_____ kW.
2. The combination of the condensing unit and the
evaporator or fan coil unit shall have a total net cooling capacity of _____ Btuh or greater at conditions of
_____ cfm entering-air temperature at the evaporator
at _____ F wet bulb and _____ F dry bulb, and air
entering the condensing unit at _____ F.
3. The system shall have an EER of _____ Btuh/Watt or
greater at standard ARI conditions.
I. Electrical Requirements:
1. Nominal unit electrical characteristics shall be _____ v,
3-ph, 60 Hz. The unit shall be capable of satisfactory
operation within voltage limits of _____ v to _____ v.
2. Unit electrical power shall be single point connection.
3. Unit control circuit shall contain a 24-v transformer
for unit control, with capacity to operate an indoor fan
interlock.
J. Special Features:
1. Low-Ambient Temperature Control (Factory-Installed
Option or Field-Installed Accessory):
Control shall regulate fan motor speed in response
to the saturated condensing temperature of the unit.
The control shall allow the unit to operate down to an
ambient temperature of –20 F.
2. Electric Solenoid Unloader Accessory:
Unloader valve piston, coil, and hardware shall be
50TFQ004-012
566D/E150-240
supplied to convert the pressure-operated compressor unloader to electric unloading.
3. Hail Guard Package:
Hail guard package shall protect coil against hail and
other flying debris.
4. Condenser Coil Grille Package:
Grilles shall protect the condenser coils after unit
installation.
5. Optional Condenser Coil Materials:
a. Pre-Coated Aluminum-Fin Coils:
Shall have a durable epoxy-phenolic coating to
provide protection in mildly corrosive coastal environments. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to
create an inert barrier between the aluminum fin
and copper tube. Epoxy-phenolic barrier shall
minimize galvanic action between dissimilar
metals.
Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without
material bridging between fins. Coating process
shall ensure complete coil encapsulation. Color
shall be high gloss black with gloss requirements
of 60° of 65-90% per ASTM D523-89. Uniform dry
film thickness from 0.8 to 1.2 mil on all surface
areas including fin edges. Superior hardness
characteristics of 2H per ASTM D3363-92A and
cross hatch adhesion of 4B-5B per ASTM D3359-
93. Impact resistance shall be up to 160 in./lb
(ASTM D2794-93). Humidity and water immersion
resistance shall be up to a minimum of 1000 and
250 hours respectively (ASTM-D2247-92 and
ASTM D870-92). Corrosion durability shall be
confirmed through testing to no less than 1000
hours salt spray per ASTM B117-90. Coil construction shall be aluminum-fins mechanically
bonded to copper tubes.
6. Thermostat Control Accessory:
a. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
b. Commercial Electronic Non-programmable Ther-
mostat with auto-changeover, multi-stage capability, and large LCD temperature display.
7. Unit-Mounted, Non-Fused Disconnect Switch:
Shall be factory-installed, internally mounted. NEC
and UL approved non-fused switch shall provide unit
power shutoff. Shall be accessible from outside the
unit and shall provide power off lockout capability.
Not to be used when rooftop electrical rating
exceeds 80 amperes.
8. Convenience Outlet:
Shall be factory-installed and internally mounted
with easily accessible 115-v female receptacle. Shall
include 15 amp GFI receptacle with independent
fuse protection. Voltage required to operate convenience outlet shall be provided by a factory-installed
step-down transformer. Shall be accessible from outside the unit.
60
MODEL NUMBER NOMENCLATURE
524A P B 120 000GC
524A — Fan Coil
Voltage
E — 460-3-60†
J — 208/230-1-60 (Sizes 072, 090 Only)
P — 208/230-3-60
T — 575-3-60
Coil Option
B — DX Cooling Coil With TXVs
C — DX High Capacity Cooling Coil With TXVs
000 – Not applicable (524A-B and 524A-C Cooling-Only Units)
Factory-Installed Options
GC — Unpainted, Standard Motor
and Standard Drive
HC — Unpainted, Standard Motor
and Medium-Static Drive
(not available for 300 sizes)
TC — Unpainted, Alternate Motor
and Medium-Static Drive
(300 size only)
YC — Unpainted, Alternate Motor
and High-Static Drive*
ED — Painted, Standard Motor
and Standard Drive
FD — Painted, Standard Motor
and Medium-Static Drive
(not available for 300 size)
RD — Painted, Alternate Motor
and Medium-Static Drive
(300 size only)
WD — Painted, Alternate Motor
and High-Static Drive*
Quality Assurance
Certified to ISO 9001:2000
LEGEND
DX — Direct Expansion
TXV—Thermostatic Expansion Valve
*The YC and WD option codes for all 090 size units with 208/230-1-60 voltage designate standard motor and high-static drive.
†All 524A072-150 units with an “E” voltage designation are triple voltage (i.e., 208/230/460-3-60). Size 524A180 is also triple voltage in the “E” con-
figuration unless the alternate motor (YC or WD) option is used.
61
50TFQ004-012
524A072-300
PHYSICAL DATA
524A-B,C UNITS
UNIT 524A
NOMINAL CAPACITY (Tons)67
072090120150180240300
1
/
2
10121/
2
152025
OPERATING WEIGHT (lb)
Base Unit with TXV (3 Row/4 Row)381/399385/404405/425670/695685/713690/7301020/1050
Plenum175175175225225225325
Economizer185185185340340340340
Hot Water Coil195195195285285285345
Steam Coil215215215340340340405
FANS
Qty...Diam. (in.)1...151...151...152...152...152...152...18
Nominal Airflow (cfm)24003000400050006000800010,000
Airflow Range (cfm)1800-30002250-37503000-50003750-62504500-75006000-10,0007500-12,500
Nominal Motor Hp (Standard Motor)*
208/230-1-601.32.4—————
208/230-3-60 and 460-3-602.42.42.42.93.75.07.5
575-3-601.02.02.03.03.05.07.5
Motor Speed (rpm)
208/230-1-6017251725—————
208/230-3-60 and 460-3-601725172517251725172517451745
575-3-601725172517251725172517451755
REFRIGERANTR-22
Operating charge (lb)
(approx per circuit)†3.03.01.5/1.52.0/2.02.5/2.53.5/3.54.5/4.5
DIRECT-EXPANSION COILEnhanced Copper Tubes, Aluminum Sine-Wave Fins
Max Working Pressure (psig)435
Face Area (sqft)6.678.3310.0113.2517.6719.8824.86
No. of Splits11222 22
Split Type...Percentage——
No. of Circuits per Split (3 Row/4 Row)12/1215/159/99/1212/1613/1815/20
Fins/in.15151715151715
Face...50/50
STEAM COIL
Max Working Pressure (psig at 400 F)175
Total Face Area (sqft)6.676.676.6713.3313.3313.3315.0
Rows...Fins/in.1...91...91...91...101...101...101...10
HOT WATER COIL
Max Working Pressure (psig)150
Total Face Area (sqft)6.676.676.6713.3313.3313.3315.0
Rows...Fins/in.2...8.52...8.52...8.52...8.52...8.52...8.52...12.5
Water Volume
(gal)8.313.914.3
3
(ft
)1.11.851.90
PIPING CONNECTIONS
Quantity...Size (in.)
DX Coil — Suction (ODF)1...11/
DX Coil — Liquid Refrigerant (ODF)1...5/
Steam Coil, In (MPT)1...21/
Steam Coil, Out (MPT)1...11/
Hot Water Coil, In (MPT)1...11/
Hot Water Coil, Out (MPT)1...1
Condensate (PVC)1...1
1...11/
8
8
2
2
2
1
/
2
2...11/
8
1...11/
1...11/
2...11/
8
2
2
1
/
ODM/1 IDF
4
2...11/
8
8
2...5/
1...21/
1...11/
2...11/
8
2
2
1...2
1...2
8
2...13/
8
FILTERSThrowaway — Factory Supplied
Quantity...Size (in.)4...16 x 24 x 2
Access LocationRight or Left Side
4...16 x 20 x 2
4...16 x 24 x 2
4...20 x 24 x 2
4...20 x 25 x 2
LEGEND
DX — Direct Expansion
TXV—Thermostatic Expansion Valve
*Refer to Alternate Fan Motor Data table, page 80, for alternate motor data.
Bhp — Brake Horsepower Input to Fan
ESP — External Static Pressure
Bold
indicates field-supplied drive is required.
Plain type indicates standard motor and standard drive.
Underline
the standard motor and standard drive combination is required. Refer to
fan motor and drive tables, pages 79-81, to complete selection.
indicates a different motor and drive combination other than
1.41.61.82.02.22.4
RpmBhpRpmBhpRpmBhpRpmBhpRpmBhpRpmBhp
1.049651.2011801.3610651.5211111.6911551.86
1.219831.3810351.5610841.7411311.9211752.11
1.419991.5910521.7811011.9811492.1811932.38
1.6310181.8210692.0311182.2411652.45——
1.8910392.1010892.3111362.5311832.76——
1.269751.4310291.6210791.8011261.9911722.18
2.1810452.3910922.6111372.8311823.07——
2.5810782.8011223.0311643.27————
9491.7410001.9310502.1410992.3611472.5811922.81
2.8010843.0311263.2611673.50————
3.5311363.7811764.03——————
4.3911914.66————————
2.379682.7410263.1210803.5111313.9211814.32
2.739803.1113603.5210843.9211354.3511844.78
3.2610023.6710524.0911014.5311484.9811905.44
3.8810314.3310794.7911255.2511695.73——
4.4210574.9111035.4011485.9011916.40——
2.759673.1310193.5210703.9211204.3511684.79
3.9210184.3810664.8511125.3211565.8011986.29
4.6710505.1910975.7111426.2311856.76——
5.3910785.9711256.5411707.11————
3.8310054.2710524.7210985.2211425.67——
4.7410405.2410905.8011356.3011766.84——
5.7910786.3811307.0011737.60————
7.1111207.7211698.37——————
8.7511669.37————————
4.979015.599446.429807.2010208.10——
6.209396.749767.3310138.0010508.82——
7.739808.3210178.9010529.51108610.16——
9.53102210.19105810.84109311.49————
EXTERNAL STATIC PRESSURE (in. wg)
5.109135.909506.889857.70——
NOTES:
1. Maximum allowable fan speed is 1100 rpm for unit size 300;
1200 rpm for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 2-in.
filters, and unit casing. See table on page 70 for factory-supplied
filter pressure drop.
3. The medium-static drive and standard motor combination is not
available for 300 size. Use alternate motor if medium-static drive is
required for these sizes.
67
50TFQ004-012
524A072-300
FAN PERFORMANCE DATA — 524A-C WITH HIGH CAPACITY COIL —
Bhp — Brake Horsepower Input to Fan
ESP — External Static Pressure
Bold
indicates field-supplied drive is required.
Plain type indicates standard motor and standard drive.
Underline
the standard motor and standard drive combination is required. Refer to
fan motor and drive tables, pages 79-81, to complete selection.
indicates a different motor and drive combination other than
1. Maximum allowable fan speed is 1100 rpm for unit size 300;
1200 rpm for all other sizes.
2. Fan performance is based on deductions for wet coil, clean 2-in.
filters, and unit casing. See table on page 70 for factory-supplied
filter pressure drop.
3. The medium-static drive and standard motor combination is not
available for 300 size. Use alternate motor if medium-static drive is
required for these sizes.
69
50TFQ004-012
524A072-300
PERFORMANCE DATA (cont)
FACTORY-SUPPLIED FILTER PRESSURE DROPACCESSORY PLENUM AIR THROW DATA
UNIT
524A-B
524A-C
072
090
120
150
180
240
300
AIRFLOW
(Cfm)
1,800
2,400
3,000
2,250
3,000
3,750
3,000
4,000
5,000
3,750
5,000
6,250
4,500
6,000
7,500
6,000
8,000
10,000
7,500
10,000
12,500
PRESSURE DROP
(in. wg)
0.05
0.08
0.11
0.07
0.11
0.15
0.11
0.17
0.23
0.06
0.10
0.13
0.08
0.12
0.17
0.12
0.19
0.26
0.15
0.22
0.30
Throw distances shown are for 75 fpm terminal velocity. Use the following multipliers to determine throw values for other terminal velocities.
= 1.5%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
Minimum Circuit
Amps
6
397
MOCP
73
50TFQ004-012
524A072-300
ELECTRICAL DATA (cont)
ELECTRIC HEATER DATA
HEATER PART NO.UNITV-PH-Hz
208-3-60
CAELHEAT001A00
240-3-60
CAELHEAT002A00480-3-60
CAELHEAT003A00575-3-60
208-3-60
CAELHEAT004A00
524A-B072-120
524A-C072-120
CAELHEAT005A00480-3-60
CAELHEAT006A00575-3-60
CAELHEAT007A00
CAELHEAT008A00480-3-60
CAELHEAT009A00575-3-60
See Legend and Notes on page 75.
240-3-60
208-3-60
240-3-60
FAN M OTO R
HpkW FLAStage 1 Stage 2 Total
1.3† 0.977.653.8—3.8 10.422.525
2.4† 1.79 11.053.8—3.8 10.426.835
2.41.795.253.8—3.8 10.419.520
2.92.167.553.8—3.8 10.422.425
3.72.76 10.253.8—3.8 10.425.830
1.3† 0.977.655.0—5.0 12.024.525
2.4† 1.79 11.055.0—5.0 12.028.835
2.41.795.255.0—5.0 12.021.525
2.92.167.555.0—5.0 12.024.425
3.72.76 10.255.0—5.0 12.027.830
2.41.792.655.0—5.0 6.0010.815
2.92.163.455.0—5.0 6.0011.815
3.72.764.855.0—5.0 6.0013.515
1.00.751.455.0—5.0 5.008.015
2.01.492.355.0—5.0 5.009.215
3.02.243.855.0—5.0 5.0011.015
1.3† 0.977.6107.5—7.5 20.835.640
2.4† 1.79 11.0107.5—7.520.839.840
2.41.795.2107.5—7.5 20.832.635
2.92.167.5107.5—7.5 20.835.440
3.72.76 10.2107.5—7.5 20.838.840
1.3† 0.977.61010.0—10.0 24.139.640
2.4† 1.79 11.01010.0—10.0 24.143.850
2.41.795.21010.0—10.0 24.136.640
2.92.167.51010.0—10.0 24.139.440
3.72.76 10.21010.0—10.0 24.142.850
2.41.792.61010.0—10.0 12.018.320
2.92.163.41010.0—10.0 12.019.320
3.72.764.81010.0—10.0 12.021.025
1.00.751.41010.0—10.0 10.014.315
2.01.492.31010.0—10.0 10.015.420
3.02.243.81010.0—10.0 10.017.320
1.3† 0.977.61511.3—11.3 31.348.650
2.4† 1.79 11.01511.3—11.3 31.352.960
2.41.795.21511.3—11.3 31.345.650
2.92.167.51511.3—11.3 31.348.550
3.72.76 10.21511.3—11.3 31.351.960
1.3† 0.977.61515.0—15.0 36.154.660
2.4† 1.79 11.01515.0—15.0 36.158.960
2.41.795.21515.0—15.0 36.151.660
2.92.167.51515.0—15.0 36.154.560
3.72.76 10.21515.0—15.0 36.157.960
2.41.792.61515.0—15.0 18.025.830
2.92.163.41515.0—15.0 18.026.830
3.72.764.81515.0—15.0 18.028.630
1.00.751.41515.0—15.0 15.120.625
2.01.492.31515.0—15.0 15.121.725
3.02.243.81515.0—15.0 15.123.625
Capacity (kW)
ELECTRIC HEATER(S)
Actual Capacity (kW)
FLA
MCA* MOCP*Nominal
524A072-300
50TFQ004-012
74
ELECTRICAL DATA (cont)
ELECTRIC HEATER DATA (cont)
HEATER PART NO.UNITV-PH-Hz
208-3-60
CAELHEAT010A00
240-3-60
CAELHEAT011A00480-3-60
CAELHEAT012A00575-3-60
CAELHEAT013A00
CAELHEAT014A00480-3-60
CAELHEAT015A00575-3-60
FLA— Full Load Amps
Hp— Horsepower
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection (Amps)
*Values shown are for single-point connection of electric heat acces-
sory and air handler.
†Single-phase motors. All other motors are 3-phase.
NOTES:
1. Electrical resistance heaters are rated at 240 v, 480 v, or 575 v. To
determine heater capacity (kW) at unit nameplate multiply the
240-v, 480-v, or 575-v capacity (kW) by the factor shown in the
table below for the unit voltage.
2. The following equation converts kW of heat energy to Btuh:
kW x 3,412 = Btuh.
3. Heater contactor coils are 24 v and require 8 va holding current.
4. Electric heaters are tested and ETL approved at maximum total
external static pressure of 1.9 in. wg.
5. MCA and MOCP values apply to both standard and alternate factory-supplied motors.
6. Approximate shipping weight for CAELHEAT001A00-015A00 is
55 lb each, CAELHEAT016A00-027A00 is 60 lb each, and
CAELHEAT028A00-039A00 is 75 lb each.
Actual Capacity (kW)
MCA* MOCP*
FLA
75
50TFQ004-012
524A072-300
ELECTRICAL DATA (cont)
ELECTRIC HEATER DATA (cont)
HEATER PART NO.UNITV-PH-Hz
208-3-60
CAELHEAT016A00
240-3-60
CAELHEAT017A00480-3-60
CAELHEAT018A00575-3-60
208-3-60
CAELHEAT019A00
240-3-60
524A-B150-240
524A-C150-240
CAELHEAT020A00480-3-60
CAELHEAT021A00575-3-60
208-3-60
CAELHEAT022A00
240-3-60
CAELHEAT023A00480-3-60
CAELHEAT024A00575-3-60
See Legend and Notes on page 77.
FAN M OTO R
Hp kWFLAStage 1 Stage 2Total
2.9 2.167.5107.5—7.520.835.440
3.7 2.7610.2107.5—7.520.838.840
5.0 3.7314.6107.5—7.520.841.350
7.5 5.5921.5107.5—7.520.852.960
2.9 2.167.51010.0—10.024.139.440
3.7 2.7610.21010.0—10.024.142.850
5.0 3.7312.81010.0—10.024.146.150
7.5 5.5919.41010.0—10.024.154.460
2.9 2.163.41010.0—10.012.019.320
3.7 2.764.81010.0—10.012.021.025
5.0 3.736.41010.0—10.012.023.025
7.5 5.599.71010.0—10.012.027.230
3.0 2.243.81010.0—10.010.017.320
5.0 3.735.11010.0—10.010.019.620
7.5 5.597.81010.0—10.010.022.125
2.9 2.167.52014.9—14.941.551.270
3.7 2.7610.22014.9—14.941.564.670
5.0 3.7314.62014.9—14.941.570.180
7.5 5.5921.52014.9—14.941.578.780
2.9 2.167.52019.9—19.947.969.270
3.7 2.7610.22019.9—19.947.972.680
5.0 3.7312.82019.9—19.947.975.880
7.5 5.5919.42019.9—19.947.984.180
2.9 2.163.42020.0—20.024.134.335
3.7 2.764.82020.0—20.024.136.140
5.0 3.736.42020.0—20.024.139.140
7.5 5.599.72020.0—20.024.143.250
3.0 2.243.82020.0—20.020.129.930
5.0 3.735.12020.0—20.020.131.535
7.5 5.597.82020.0—20.020.134.935
2.9 2.167.53015.07.522.562.587.590
3.7 2.7610.23015.07.522.562.590.9100
5.0 3.7314.63015.07.522.562.596.4100
7.5 5.5921.53015.07.522.562.5105.0110
2.9 2.167.53020.010.030.072.299.6100
3.7 2.7610.23020.010.030.072.2103.0110
5.0 3.7312.83020.010.030.072.2106.2110
7.5 5.5919.43020.010.030.072.2114.5125
2.9 2.163.43020.010.030.036.149.450
3.7 2.764.83020.010.030.036.151.160
5.0 3.736.43020.010.030.036.153.160
7.5 5.599.73020.010.030.036.157.260
3.0 2.243.83020.010.030.030.142.450
5.0 3.735.13020.010.030.030.144.050
7.5 5.597.83020.010.030.030.147.450
Nominal
Capacity (kW)
ELECTRIC HEATER(S)
Actual Capacity (kW)
FLA
MCA*MOCP*
524A072-300
50TFQ004-012
76
ELECTRICAL DATA (cont)
ELECTRIC HEATER DATA (cont)
HEATER PART NO.UNITV-PH-Hz
208-3-60
CAELHEAT025A00
524A-B180,240
CAELHEAT026A00480-3-60
CAELHEAT027A00575-3-60
CAELHEAT028A00
CAELHEAT029A00480-3-60
CAELHEAT030A00575-3-60
CAELHEAT031A00
CAELHEAT032A00480-3-60
CAELHEAT033A00575-3-60
FLA — Full Load Amps
Hp— Horsepower
MCA — Minimum Circuit Amps
MOCP— Maximum Overcurrent Protection (Amps)
*Values shown are for single-point connection of electric heat acces-
sory and air handler.
NOTES:
1. Electrical resistance heaters are rated at 240 v, 480 v, or 575 v. To
determine heater capacity (kW) at unit nameplate multiply the
240-v, 480-v, or 575-v capacity (kW) by the factor shown in the
table below for the unit voltage.
2. The following equation converts kW of heat energy to Btuh:
kW x 3,412 = Btuh.
3. Heater contactor coils are 24 v and require 8 va holding current.
4. Electric heaters are tested and ETL approved at maximum total
external static pressure of 1.9 in. wg.
5. MCA and MOCP values apply to both standard and alternate factory-supplied motors.
6. Approximate shipping weight for CAELHEAT001A00-015A00 is
55 lb each, CAELHEAT016A00-027A00 is 60 lb each, and
CAELHEAT028A00-039A00 is 75 lb each.
Actual Capacity (kW)FLA
MCA* MOCP*
77
50TFQ004-012
524A072-300
ELECTRICAL DATA (cont)
ELECTRIC HEATER DATA (cont)
HEATER PART NO.UNITV-PH-Hz
CAELHEAT034A00
CAELHEAT035A00480-3-60
CAELHEAT036A00575-3-60
CAELHEAT037A00
CAELHEAT038A00480-3-60
CAELHEAT039A00575-3-60
FLA— Full Load Amps
Hp— Horsepower
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection (Amps)
*Values shown are for single-point connection of electric heat acces-
sory and air handler.
NOTES:
1. Electrical resistance heaters are rated at 240 v, 480 v, or 575 v. To
determine heater capacity (kW) at unit nameplate multiply the
240-v, 480-v, or 575-v capacity (kW) by the factor shown in the
table below for the unit voltage.
2. The following equation converts kW of heat energy to Btuh:
kW x 3,412 = Btuh.
3. Heater contactor coils are 24 v and require 8 va holding current.
4. Electric heaters are tested and ETL approved at maximum total
external static pressure of 1.9 in. wg.
5. MCA and MOCP values apply to both standard and alternate factory-supplied motors.
6. Approximate shipping weight for CAELHEAT001A00-015A00 is
55 lb each, CAELHEAT016A00-027A00 is 60 lb each, and
CAELHEAT028A00-039A00 is 75 lb each.
Actual Capacity (kW)
FLA
MCA* MOCP*
524A072-300
50TFQ004-012
78
APPLICATION DATA — 524A
1. OPERATING LIMITS
Maximum fan speed — 524A-B,C072-240 . . . . . . . .1200 rpm
Maximum fan speed — 524A-B,C300 . . . 1100 rpm (18.3 r/s)
2. GENERAL — Select equipment to match or to be slightly
less than peak load. This provides better humidity control,
less unit cycling, and less part-load operation. Equipment
should be selected to perform at no less than 300 cfm/ton.
FACTORY-INSTALLED NOZZLE AND DISTRIBUTOR DATA
The air handler fan must always be operating when the condensing unit is operating.
Ductwork should be sized according to unit size, not building load. For larger units with two fans, a split duct transition
is recommended at the fan outlets, but a plenum can
be used with slight reduction in external static pressure
capability.
NEMA — National Electrical Manufacturers Association
5
/
8
7
/
8
7
/
8
5
/
8
7
/
8
7
/
8
—————
7
/
8
7
/
8
11/
7
/
8
8
11/
11/
8
8
13/
13/
8
8
13/
13/
8
8
STANDARD DRIVE DATA
UNIT SIZE 524A072090120150180240300
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)2.4-3.42.8-3.83.4-4.42.8-3.82.8-3.83.7-4.74.3-5.3
Pulley Factory Setting
Full Turns Open
2.52.52.52.52.53.03.0
FAN DRIVE
Pulley Pitch Dia (in.)8.88.88.89.09.09.411.0
Pulley Bore (in.)1111
7
/
16
17/
16
17/
16
Belt No. — Section1—A1—A1—A1—A1—A1—B2—B*
Belt Pitch (in.)40.341.342.342.342.341.8
FAN SPEEDS (rpm)
Factory Settings568647764632632771752
Range470-666549-745666-863537-728537-728679-863682-841
Max Allowable Speed (rpm)1200120012001200120012001100
Change per
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)
1
/2turn of
19.619.619.719.119.115.313.1
5555566
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.12-
10.99
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
115/
16
(2) 42.8
(2) 43.8
6.67-
9.43
524A072-300
50TFQ004-012
80
APPLICATION DATA — 524A (cont)
MEDIUM-STATIC DRIVE DATA
UNIT SIZE 524A072090120150180240300
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.43.4-4.43.7-4.74.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)8.88.08.08.28.69.49.4
Pulley Bore (in.)1111
Belt No. — Section1—A1—A1—A1—A1—B2—B2—B*
Belt Pitch (in.)42.340.340.341.341.841.8
FAN SPEEDS (rpm)
Factory Setting764841841820842881881
Range666-863733-949733-949715-926742-943798-984798-984
Max Allowable Speed (rpm)1200120012001200120012001100
Change per
Moveable Motor Pulley
Flange
1
/2Turn of
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)
*Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.
2.52.52.52.53.03.03.0
7
/
16
17/
16
17/
16
19.721.621.621.116.715.315.3
5555666
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32
9.16-
10.99
115/
16
(2) 38.8
(2) 39.8
6.67-
9.43
HIGH-STATIC DRIVE DATA
UNIT SIZE 524A072090120150180240300
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)3.4-4.43.4-4.43.4-4.43.7-4.74.3-5.34.3-5.34.3-5.3
Pulley Factory Setting
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)7.06.0*6.07.47.97.48.6
Pulley Bore (in.)1111
Belt No. — Section1—A1—A1—A1—B1—B2—B2—B
Belt Pitch (in.)41.337.337.339.839.836.837.8
FAN SPEEDS (rpm)
Factory Setting96111211121979106011181024
Range
Max Allowable Speed (rpm)1200120012001200120012001100
Change per
Moveable Motor Pulley
Flange
1
/2Tu rn of
MAX FULL TURNS FROM
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)
*Values for 3-phase motor shown. For single-phase motor, pulley pitch diameter is 7 in.
and resulting fan speed is 837-1096 rpm.
†It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT
exceed 1200 rpm.
**575-v unit has a center distance of 9.16-10.99.
2.52.52.53.03.03.03.0
7
838-
1084
978-
1200*†
978-
1200†
873-
1096
/
16
17/
950-
1171
16
17/
16
10141200†
24.628.728.719.418.419.416.7
5556666
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32**
9.16-
10.99
8.16-
10.02
115/
873-
1075
6.67-
9.43
16
81
50TFQ004-012
524A072-300
GUIDE SPECIFICATIONS — 524A
COMMERCIAL PACKAGED AIR-HANDLING UNIT
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 1,800 to 12,500 CFM, NOMINAL AIRFLOW 6 TO
25 TONS, NOMINAL COOLING
BRYANT MODEL NUMBERS: 524A-B (DIRECT-EXPANSION
1.01 SYSTEM DESCRIPTION
A. Indoor, packaged air-handling unit for use in commercial
split systems. Unit shall have a multiposition design and
shall be capable of horizontal or vertical installation on a
floor or in a ceiling, with or without ductwork. (Only vertical units are to be applied without ductwork.)
B. Unit with direct-expansion coil shall be used in a refriger-
ant circuit with a matching air-cooled condensing unit.
1.02 QUALITY ASSURANCE
A. Coils shall be designed and tested in accordance with
ASHRAE 15 Safety Code for Mechanical Refrigeration,
latest edition.
B. Unit shall be constructed in accordance with ETL and
ETL, Canada, standards and shall carry the ETL and
ETL, Canada, labels.
C. Unit insulation and adhesive shall comply with NFPA-90A
requirements for flame spread and smoke generation.
Insulation shall contain an EPA-registered immobilized
antimicrobial agent to effectively resist the growth of
bacteria and fungi as proven by tests in accordance with
ASTM standards G21 and 22.
D. Unit shall be manufactured in a facility registered to the
ISO 9001:2000 manufacturing quality standard.
E. Direct-expansion coils shall be burst and leak tested at
435 psi.
1.03 DELIVERY AND STORAGE
Units shall be stored and handled per manufacturer’s
recommendations.
PART 2 — PRODUCTS
2.01 EQUIPMENT
Indoor mounted, draw-thru, packaged air-handling unit
that can be used in a suspended horizontal configuration
or a vertical configuration. Unit shall consist of forwardcurved belt-driven centrifugal fan(s), motor and drive
assembly, prewired fan motor contactor, factory-installed
refrigerant metering devices (direct-expansion coil units),
cooling coil, 2-in. disposable air filters, and condensate
drain pans for vertical or horizontal configurations.
A. Base Unit:
1. Cabinet shall be constructed of mill-galvanized steel.
1
2. Cabinet panels shall be fully insulated with
fire-retardant material. Insulation shall contain an
EPA-registered immobilized antimicrobial agent to
effectively resist the growth of bacteria and fungi as
proven by tests in accordance with ASTM standards
G21 and 22.
3. Unit shall contain non-corroding condensate drain
pans for both vertical and horizontal applications.
Drain pans shall have connections on right and left
sides of unit to facilitate field connection. Drain pans
shall have the ability to be sloped toward the right or
left side of the unit to prevent standing water from
accumulating in pans.
/2-in.
4. Unit shall have factory-supplied 2-in. throwaway-type
filters installed upstream from the cooling coil. Filter
access shall be from either the right or left side of the
unit.
B. Coils:
Coils shall consist of 3 rows (524A-B) or 4 rows (524A-C)
of copper tubes with sine-wave aluminum fins bonded to
the tubes by mechanical expansion. Suction and liquid
line connections or supply and discharge connections
shall be made on the same side of the coil.
1. Direct-expansion coils shall feature factory-installed
thermostatic expansion valves (TXVs) for refrigerant
control. The TXVs shall be capable of external
adjustment. Coil tubing shall be internally rifled to
maximize heat transfer.
2. High-Capacity Coil:
The high-capacity 4-row coil consists of 4 rows of
3
/8-in. copper tubes with sine-wave aluminum fins
bonded to the tubes by mechanical expansion. Coil
tubing shall be internally rifled to maximize heat
transfer. Suction and liquid line connections shall be
made on the same side of the coil. Direct-expansion
coils shall feature factory-installed thermostatic
expansion valves (TXVs) for refrigerant control. The
TXVs shall be capable of external adjustment.
C. Operating Characteristics:
Unit shall be capable of providing
cfm airflow at an
external static pressure ofin. wg.
D. Motor :
Fan motor of the size and electrical characteristics specified on the equipment schedule shall be factory supplied
and installed.
Motors rated at 1.3 through 3.7 hp shall have internal
thermal overload protection. Motors rated at 5, 7
10 hp shall be protected by a circuit breaker.
E. Special Features:
1. Alternate Motor and Drive:
An alternate motor and/or medium-static or high-
static drive shall be available to meet the airflow and
external static pressure requirements specified on
the equipment schedule.
2. External Paint:
Where conditions require, units shall be painted with
an American Sterling Gray finish.
3. Hot Water Coil:
Coil shall be 2-row, U-bend coil with copper tubes
and aluminum plate fins bonded to the tubes by
mechanical expansion. Coil shall be mounted in a
galvanized steel housing that shall be fastened to the
unit’s fan deck for blow-thru heating operation. Coil
shall have maximum working pressure of 150 psig.
4. Steam Distributing Coil:
Coil shall consist of one row of copper tubes with
aluminum plate fins, and shall have inner steam distributing tubes. Coil shall be mounted in a galvanized
steel housing and shall be fastened to the unit’s fan
deck for blow-thru heating operation. Coil shall have
maximum working pressure of 20 psig at 260 F.
1
/2,and
524A072-300
50TFQ004-012
82
GUIDE SPECIFICATIONS — 524A (cont)
5. Electric Heaters:
Heaters for nominal 240, 480, or 575-volt, 3-phase,
60 Hz power supply shall be factory-supplied for field
installation as shown on the equipment drawings.
Electric heat assembly shall be ETL and ETL, Canada, agency approved, and shall have single-point
power wiring. Heater assembly shall include contactors with 24-v coils, power wiring, 24-v control wiring
terminal blocks, and a hinged access panel. Electric
heaters shall not be used with air discharge plenum.
6. Air Discharge Plenum:
Plenum shall be factory supplied to provide free-blow
air distribution for vertical floor-mounted units. A
grille with moveable vanes for horizontal or vertical
airflow adjustment shall be included. Plenum shall
be field-assembled and field-installed on the unit’s
fan deck for blow-thru air distribution. Plenum shall
notbeusedwithelectricheaters.
7. Return-Air Grille:
Grille shall be factory supplied for field installation on
the unit’s return air opening.
8. Unit Subbase:
Subbase assembly shall be factory supplied for field
installation. Subbase shall elevate floor-mounted
vertical units to provide access for correct condensate drain connection.
9. Economizer:
Economizer for ventilation or “free” cooling shall be
factory provided for field installation on either return
air opening of air handler. For free cooling applications, economizer shall be compatible with separate
thermostat; economizer dampers shall open when
outdoor air enthalpy is suitable for free cooling.
Economizer shall include enthalpy control and
damper actuator. Economizer shall be compatible
with accessory CO
shall open when indoor CO2level rises above predetermined set point.
A 2 to 10 vdc actuator adapter must be field-supplied
and installed on economizer for demand control ventilation using the CO
10. Thermostat Controls:
a. Commercial Electronic Thermostat with 7-day
timeclock, auto-changeover, multi-stage capability, and large LCD temperature display.
b. Commercial Electronic Non-programmable Ther-
mostat with auto-changeover, multi-stage capacity, and large LCD display.
sensor. Economizer damper
2
sensor accessory.
2
11. Overhead Suspension Package:
Package shall include necessary brackets to support
units in a horizontal ceiling installation.
12. Condensate Drain Trap:
Trap shall have transparent, serviceable design for
easy cleaning. Kit shall include overflow shutoff
switchandwiringharnessforconnectiontoanalarm
if desired.
13. UV-C Germicidal Lamps:
UV-C emitters and fixtures shall be specifically
designed for use inside an HVAC system. An ASME
nozzled test apparatus using a 45 F airstream moving at not less than 400 fpm shall measure individual
lamp output. Lamp output at 253.7 nm shall not be
2
less than 10µW/cm
per inch of arc length measured
at a distance of one meter.
a. UV-C power supplies shall be high efficiency,
electric type which are matched to the emitters
and are capable of producing the specified output
intensity with an input power no more than
80 watts.
b. Emitters and fixtures shall be installed in sufficient
quantity and arranged so as to provide an equal
distribution of UV-C energy on the coil and drain
fan.
c. The minimum UV-C energy striking the leading
edge of the coil fins shall be not less than
2
820 µW/cm
at the closest point and through
placement, not less than 60% of that value at the
farthest point. Equal amounts are to strike the
drain pan, either directly or indirectly through
reflection.
d. Emitters and fixtures shall be installed at right
angles to the conforming lines of the coil fins,
such that through incident angle reflection, UV-C
energy strikes all target surfaces of the coil, drain
pan, and the available line of sight airstream.
14. CO
Sensor:
2
The field-installed CO2ventilation sensor measures
the amount of ventilation needed by the space and a
proportional integral derivative loop (PID) calculation
makes adjustments to the economizer minimum
position during occupied operation. The indoor CO
will be compared to an outdoor CO2reference before
making adjustments to the economizer minimum
position.
2
83
50TFQ004-012
524A072-300
569D/F072-120, 576C12011 -32
566D/E150-24033-60
524A072-30061-83
Alternate motors and drives5, 73, 80, 81
Application data
569D/F072-120, 576C120
27
566D/E150-24054-56
524A072-30079-81
ARI capacity ratings3
CO2sensor83
Combination ratings