Bryant 579F - Manual (Page 2)

DUAL COMPRESSORS AND DUAL REFRIGERATION CIR-
CUITS (090-150 and 216-300 units) are provided. Two com-
pressors, each on its own independent circuit, provide standby
reliability and high operating efficiency.
POWER, CONTROL, AND GAS CONNECTIONS are made on
the same side of the unit to simplify installation, and the 036-150
units have thru-the-bottom power connection capability.
INDUCED-DRAFT COMBUSTION provides the exact amount
of combustion air for the most efficient operation. Induced-draft
combustion also eliminates the flue stack, giving the unit a low
profile appearance. The draw-through design ensures safe op-
eration under any conditions.
DIRECT-SPARK IGNITION SYSTEM (036-150) saves operat-
ing expense by eliminating inefficient standing pilot ignition and
unnecessary service calls.
INTERMITTENT SPARK IGNITION (180-300) eliminates the
standing pilot flame that consumes gas when the furnace is shut
down. The pilot is ignited only when the thermostat calls for
heat.
TUBULAR U-SHAPED CELL design of the heat exchanger
provides high-efficiency heating operation. The hot gases make
2 passes over the supply-air path to enhance efficiency. In ad-
dition, the 036-150 units have a dimpled heat exchanger to
maximize heat transfer.
POSITIVE-PRESSURE MECHANICAL FLUE GAS VENTING
is unaffected by adverse wind conditions.
FURNACE SAFETY CONTROLS shut off gas if there is a
burner (036-150) or pilot (180-300) outage, combustion-air fail-
ure, overheating of heat exchangers, or flame rollout.
TWO-STAGE HEATING WITH 2 INDEPENDENT GAS CON-
TROL SYSTEMS (180-300 units) minimizes heating costs.
These independent gas control systems make single-stage
heating possible if one stage fails.
NEW TOOL-LESS FILTER ACCESS PANEL provides easy ac-
cess to filters. The new panel provides additional access space,
permitting easy filter replacement in the unit, even with an
outdoor-air device mounted in a horizontal position.
INTEGRATED GAS UNIT CONTROLLER BOARD on the 036-
150 units makes the control of gas heating rooftop units more
reliable, safe, and efficient. The board provides timed control of
evaporator-fan functions and ignites the burners. The board
also simplifies troubleshooting through its built-in diagnostic
function which provides system status and fault notification via a
light-emitting diode (LED). In addition, the board provides anti-
cycle protection for gas heat operation.
ADVANCED DESIGN of evaporator and condenser coils pro-
vides optimum heat transfer and cooling efficiency. Coils are
computer-designed with advanced heat transfer surfaces, and
are fabricated of copper tubing with aluminum fins.
COMMERCIAL STRENGTH BASE RAILS (full-perimeter on
036-150 units) with built-in rigging capability permit easy rig-
ging of unit.
WEATHER-RESISTANT CABINET is built for durability in any
climate. The cabinet is made of pre-painted, galvanized steel for
long life and high-quality appearance.
LOW-AMBIENT OPERATION is provided standard on most
units. The 036-150 units and the 240 unit operate in cooling
down to 25 F as shipped from the factory. The 180 and 216 units
operate down to 40 F, and the 300 unit operates down to 48 F.
Low-ambient kits are not required for most applications.
HERMETICALLY-SEALED COMPRESSORS on the 036-150,
216, and 240 units prevent contamination to help promote
longer life and dependable operation. The 180 and 300 units
have semi-hermetic compressors.
COMPRESSOR VIBRATION ISOLATION MOUNTING on all
units eliminates noise-causing vibration transmission into the
conditioned space.
CRANKCASE HEATERS on the 180 and 300 units keep the oil
free of refrigerant during the off cycle for added compressor life
and reliability. Crankcase heaters are not required on 036-150
and 216 and 240 units due to high-side crankcase design (072,
150, 216, 240) and low refrigerant charge levels (036-150).
STANDARD WARRANTIES include 1 year on parts (no labor),
with an additional 4 years on compressors (036-180 units) and
heat exchangers (all units). Additional extended warranties are
available.
3-5 TON UNITS WEIGH LESS THAN 500 LB as standard from
the factory. This can eliminate the need for structural engineer-
ing approval on replacement jobs.
BELT-DRIVEN EVAPORATOR-FAN MOTORS are standard on
all 6-25 ton units and allow adjustment of the available static
pressure to meet the job requirements of even the most de-
manding applications. Belt-driven evaporator-fan motors are
available on 3-5 ton units as a factory-installed option.
NON-CORROSIVE, SLOPED, CONDENSATE DRAIN PAN
permits either an external horizontal side condensate drain (out-
side the roof curb) or an internal vertical bottom drain (inside the
roof curb). Both options also require an external, field-supplied
P-trap.
CONTENTS
Page
Model Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Heating Capacities and Efficiencies . . . . . . . . . . . . . . . . . . 5
Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-20
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Gross Cooling Capacities . . . . . . . . . . . . . . . . . . . . . . . . 22-29
Air Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-48
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51,52
Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52,53
Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . 54,55
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56,57
Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58-62
Engineers’ Specification Guide . . . . . . . . . . . . . . . . . . . . 63,64
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