Bryant 580D User Manual

Page 13

PHYSICAL DATA — 579F180-300 (cont)

UNIT SIZE 579F

180

LOW/HIGH HEAT

216

LOW/HIGH HEAT

240

LOW/HIGH HEAT

300

LOW/HIGH HEAT

FURNACE SECTION

Rollout Switch Cutout

Temp (F)††

190

Burner Orifice Diameter

(in. ...drill size)
Natural Gas

0.1405...28/0.136...29

Thermostat Heat Anticipator Setting (amps)

208/230 v Stage 1

0.98

Stage 2

0.44

460 v Stage 1

0.80

Stage 2

0.44

Gas Input (Btuh) Stage 1

172,000/225,000

206,000/270,000

Stage 2

230,000/300,000

275,000/360,000

Efficiency (Steady State) (%)

Temperature Rise Range

15-45/30-60

15-45/20-50

Manifold Pressure (in. wg)

Natural Gas

3.3

Gas Valve Pressure Range

in. wg

5.5-13.5

psig

0.235-0.487

Gas Valve Quantity

Field Gas Connection Size (in.)

⁄

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief

(Differential)

—

Cutout

426

Reset (Auto.)

320

LOW-PRESSURE SWITCH (psig)

Cutout

Reset (Auto.)

FREEZE PROTECTION THERMOSTAT (F)

Opens

30 ± 5

Closes

45 ± 5

OUTDOOR-AIR INLET SCREENS

Cleanable

Quantity...Size (in.)

2...20 x 25 x 1
1...20 x 20 x 1

RETURN-AIR FILTERS

Throwaway

࿣

Quantity...Size (in.)

4...20 x 20 x 2
4...16 x 20 x 2

POWER EXHAUST

⁄

Hp 208/230-460 v Motor Direct Drive, Prop-Fan (Factory-wired for 460 v)

LEGEND

— Aluminum

Bhp — Brake Horsepower
Cu

— Copper

TXV — Thermostatic Expansion Valve

*Evaporator coil fin material/condenser coil fin material.

†Weight of 14-in. roof curb.

**On 579F180-300 units, Circuit 1 consists of lower portion of con-

denser coil and lower portion of evaporator coil, and Circuit 2 is the
upper portion of both coils.

††Rollout switch lockout is manually reset by interrupting power to unit

or resetting thermostat.

࿣

The 579F300 unit requires 2-in. industrial-grade filters capable of
handling face velocities of up to 625 ft/min (such as American Air Fil-
ter no. 5700 or equivalent).

NOTE: The 579F180-300 units have a low-pressure switch (standard)
located on the suction side.