Bryant 569F - Manual (Page 31)

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GUIDE SPECIFICATIONS — 569F120
COMMERCIAL AIR-COOLED CONDENSING UNITS
HVAC GUIDE SPECIFICATIONS
SIZE RANGE: 10 TONS, NOMINAL
BRYANT MODEL NUMBER: 569F, 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 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 pack-
aged 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. 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 facil-
itate 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. Compressor:
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 cool-
ing 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 satisfac-
tory 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 pres-
sure at outdoor temperatures down to –20 F.
2. Gage Panel Package:
Gage panel package shall include a suction and dis-
charge pressure gage.
50
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