Guide specifications continued – Bryant 574B User Manual

Page 28

—28—

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

UNIT MUST BE INSTALLED IN ACCORDANCE

WITH INSTALLATION INSTRUCTIONS

Cancels: NEW

Form PDS 574B.24.1

PRINTED IN U.S.A. Catalog No. 5257-400

8-03

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.

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:

Shall provide NO

reduction to values below 40 nano-

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.

GUIDE SPECIFICATIONS continued