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GUIDE SPECIFICATIONS — 566D150-240, 566E150-240
COMMERCIAL AIR-COOLED CONDENSING UNITS
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 12
1
/
2
TO 20 TONS, NOMINAL
BRYANT MODEL NUMBER: 566D, SIZES 150-240
566E, SIZES 150-240
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
semi-hermetic reciprocating compressor (566D) or scroll
compressor (566E), an air-cooled coil, propeller-type con-
denser 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,
discharging air vertically upward.
2. Condenser-fan motor no. 1 shall be ball bearing type
compatible with accessory low-ambient control.
3. Shafts shall have inherent corrosion resistance.
4. Fan blades shall be statically and dynamically
balanced.
5. Condenser fan openings shall be equipped with
PVC-coated steel wire safety guards.
D. Compressors:
1. 566D150-240 Units:
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 inte-
gral subcooler.
2. Coil shall be constructed of aluminum fins mechani-
cally 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 dis-
charge 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 compres-
sor 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
(after resetting first at thermostat)
a. High discharge-pressure cutout.
b. Low suction pressure cutout.
c. Condenser-fan motors to be protected against
overload condition by internal overloads.
50TFQ004-012
566D/E150-240