Bryant 574B User Manual page 28

K. Electrical Requirements:
All unit power wiring shall enter the unit cabinet at a single
location.
L. Motors:
1. Compressor motors shall be of the refrigerant-cooled
type with line-break thermal and current overload pro-
tection.
2. All fan motors shall have permanently lubricated bear-
ings, and inherent, automatic reset, thermal overload
protection.
3. Condenser fan motor shall be totally enclosed.
M. Grille:
1. Louvered Grille:
Louvered grille shall be factory-installed to provide hail
guard and vandalism protection.
N. Duct Conversion:
Shall be available with the use of included duct covers.
O. Special Features Available:
1. Coil Options:
Shall include factory-installed optional tin-plated in-
door, copper/copper and vinyl-coated refrigerant
coils.
2. Economizer:
a. Economizer controls capable of providing free cool-
ing using outside air.
b. Equipped with low leakage dampers not to exceed
3% leakage, at 1.0 in. wg pressure differential.
c. Spring return motor shuts off outdoor damper on
power failure.
3. Flat Roof Curb:
Curbs shall have seal strip and a wood nailer for flash-
ing and shall be installed per manufacturer's instruc-
tions.
4. Manual Outdoor Air Damper:
Package shall consist of damper, birdscreen, and rain-
hood which can be preset to admit outdoor air for year-
round ventilation.
© 2003 Bryant Heating & Cooling Systems, 7310 W. Morris St., Indpls., IN 46231
GUIDE SPECIFICATIONS continued
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5. Thermostat:
To provide for one-stage heating and cooling in addition
manual or automatic changeover and indoor fan control.
6. Natural-to-Propane Conversion Kit:
Shall be complete with all required hardware to convert
to liquid propane (LP) operation.
7. Low Ambient Package:
Shall consist of a solid-state control and condenser coil
temperature sensor for controlling condenser-fan mo-
tor operation, which shall allow unit to operate down to
0° F outdoor ambient temperature.
8. Filter Rack Kit:
Shall provide filter mounting for downflow applications.
9. Square-To-Round Duct Transitions 024-048:
Shall have the ability to convert the supply and return
openings from rectangular to round.
10. Compressor Protection (Time Guard® II Kit)
Solid-state control shall protect compressor by prevent-
ing "short cycling."
11. Crankcase Heater:
Shall provide anti-floodback protection for low-load
cooling applications.
12. High Altitude Kit:
Shall consist of natural gas orifices to compensate for
gas heat operation at 2001 to 6000 ft above sea level.
13. Low NO (Natural Gas only) option:
x
Shall provide NO reduction to values below 40 nano-
x
grams/joule to meet California emission requirements.
14. Compressor Hard Start Kit:
Shall provide additional starting torque for single-phase
compressors. (Single phase only).
15. Rigging kit includes rigging brackets which are inserted
into the unit base rigging holds to rig unit for rooftop ap-
plications.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
UNIT MUST BE INSTALLED IN ACCORDANCE
PRINTED IN U.S.A.
WITH INSTALLATION INSTRUCTIONS
Cancels: NEW
Form PDS 574B.24.1
Catalog No. 5257-400 8-03