Bryant 579F - Manual (Page 58)

APPLICATION DATA
1. Ductwork (580D036-150) — Secure vertical discharge
ductwork to roof curb. For horizontal discharge applica-
tions, attach ductwork to unit, or field-supplied flanges can
be attached to horizontal discharge openings and all duct-
work attached to flanges.
2. Ductwork (579F180-300) — Ductwork should be attached
to the curb on all units. Interior installation may proceed be-
fore unit is set in place on roof. If ductwork will be attached
to the unit, do not drill in condensate drain pan area —
leaks may result. See figures on page 59 for information on
field-installed concentric ductwork when applicable.
3. To Convert from Vertical Discharge to Horizontal Discharge
(580D036-150):
A. Remove Varislide™ economizer to gain access to re-
turn duct opening.
B. Move the horizontal discharge duct opening covers to
the vertical discharge openings.
C. Rotate Varislide economizer 90 degrees (until the
economizer motor faces the condenser section).
D. Rotate the barometric relief damper 90 degrees (econo-
mizer only).
E. Install block-off plate over the opening on the access
panel.
NOTE: Parablade economizer is vertical discharge only.
4. Thru-The-Curb Service Connections — Roof curb connec-
tions allow field power wires, control wires, and gas supply
to enter through the roof curb opening.
5. Thru-The-Bottom Electric Service Connections — The ac-
cessory connection kit must be used to allow field power
and control wires to enter from the bottom of the unit to en-
sure a watertight seal.
6. Thermostat — Use of 2-stage cooling thermostat is recom-
mended for all units. A 2-stage cooling thermostat is re-
quired on units with accessory economizer to provide
integrated cooling.
7. Heating-to-Cooling Changeover — All units are automatic
changeover from heating to cooling when automatic
changeover thermostat and subbase are used.
8. Airflow — Units are draw-thru on cooling and blow-thru on
heating.
9. Maximum Airflow — To minimize the possibility of conden-
sate blow-off from evaporator, airflow through units should
not exceed 500 cfm/ton on size 036-240 units, and 11,250
cfm on size 300 units.
10. Minimum Airflow — The minimum airflow for cooling is
300 cfm/ton.
11. Minimum Ambient Cooling Operation Temperature
(580D036-150) — The cooling temperature for size 036-
150 standard units is 25 F. With accessory low-ambient kit,
units can operate at outdoor temperatures down to –20 F.
12. Minimum Ambient Cooling Operation Temperature
(579F180-300) — Units are designed to operate at outdoor
temperatures down to 40 F for 579F180 and 216, 25 F for
579F240, and 48 F for 579F300. To operate at lower
outdoor-air temperatures, see Trade Prices or contact your
local representative for appropriate accessories.
13. Maximum Operating Outdoor-Air Temperature — For cool-
ing, this temperature is 115 F on size 036-150 units and
125 F on size 180-300 units.
14. High Altitude — A change to the gas orifice may be required
at high altitudes. Refer to Altitude Compensation charts on
page 61.
15. Minimum Temperature — Air entering the heat exchanger
in heating is 50 F continuous and 45 F intermittent.
16. Internal Unit Design — Due to the internal design (draw-
thru over the motor), air path, and specially designed mo-
tors, the full horsepower (maximum continuous bhp) listed
in the Specifications table and the notes following each Air
Delivery table can be utilized with extreme confidence.
Using the motors with the values listed in the Specifications
table
will not result in nuisance tripping or premature motor
failure. The unit warranty will not be affected.
OPTION AND ACCESSORY LIST
ITEM
FACTORY-
INSTALLED
OPTION
FIELD-
INSTALLED
ACCESSORY
Varislide™ and Standard
Integrated Economizer
X X
Parablade Economizer (036-150) X
Manual Outdoor-Air Dampers X X*
Controls Upgrade Kit (036-150)† X X
Alternate Drive (090) X
Alternate Motor and Drive
(036-060, 120, 150)
X
Condenser Coil Grille (036-150)† X
Two-Position Damper X
Barometric Relief Damper (180-300) X
Roof Curbs (Vertical and Horizontal) X
Horizontal Adapter (180-300) X
Thermostats and Subbases X
Power Exhaust (180-300) X
Head Pressure Control Device X
Low-Ambient Kit X
Time Guard ா II Control Circuit X
Utility Connection Package
(036-150)
X
Enthalpy Control (036-150) X
Enthalpy Control Sensor X
Condenser Coil Hail Guard
Assembly (036-150)
X
LP (Liquid Propane) Conversion
Kit (036-150)
X
Flue Hood Protector (036-150) X
NO
x
Reduction Kit (036-150) X
Winter Start Time-Delay
Relay (180-300)
X
Fan/Filter Status Switch X
Thru-the-Bottom
Service Connectors (036-150)
X
Condenser Coil Salt
Spray Protector (090-150)
X
Hail Guard (036-150) X
Flue Discharge
Deflector (036-150)
X
*Available as an accessory on 580D036-150 only.
†Only available as part of an options package.
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