Bryant 597C User Manual

installation and
start-up instructions

12 SEER
SPLIT-SYSTEM
AIR CONDITIONER

NOTE: Read the entire instruction manual before starting the
installation.

This symbol → indicates a change since the last issue.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thor­oughly and follow all warnings or cautions included in literature
and attached to the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety-alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAU­TION. These words are used with the safety-alert symbol. DAN­GER identifies the most serious hazards which willresultinsevere
personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.

WARNING: Before installing, modifying, or servicing
system, main electrical disconnect switch must be in the
OFF position. There may be more than 1 disconnect
switch. Lock out and tag switch with a suitable warning
label. Electrical shock can cause personal injury or death.

INTRODUCTION AND RECOMMENDATIONS

NOTE: In some cases noise in the living area has been traced to

gas pulsations from improper installation of equipment.

1. Locate unit away from windows, patios, decks, etc. where
unit operation sounds may disturb customer.

2. Ensure that vapor- and liquid-tube diametersareappropriate
to capacity of unit.

3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns and bends.

4. Leave some slack between structure and unit to absorb
vibration.

5. When passing refrigerant tubes through the wall, seal
opening with RTV or other pliable silicon-based caulk. (See
Fig. 2.)

597C

Cancels: II 597C-18-4 II 597C-18-5

11-00

.

A98515

Fig. 1—Model 597C

6. Avoid direct tubing contact with water pipes, duct work,
floor joists, wall studs, floors, and walls.

7. Do not suspend refrigerant tubing from joists and studs with
a rigid wire or strap that comes in direct contact with tubing.
(See Fig. 2.)

8. Ensure that tubing insulation is pliable and completely
surrounds vapor tube.

9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)

10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.

When outdoor unit is connected to factory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 ft of
field-supplied or factory-accessory tubing. For proper unit opera­tion, check refrigerant charge using charging information located
on control-box cover.

IMPORTANT: Maximum liquid-line size is 3/8-in. O.D. for all
residential applications including long line.

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IMPORTANT: Always install a liquid-line filter drier on any
system using an existing field service lineset and/or indoor
evaporator coil or fan coil. Also, always use liquid line filter driers
on burnout compressor replacements. Refer to Product Data Sheets
for appropriate part number. Obtain filter driers from your local
distributor or branch.

INSTALLATION

I. CHECK EQUIPMENT AND JOB SITE
A. Unpack Unit

Move to final location. Remove carton, taking care not to damage
unit.

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Avoid contact between tubing and structureNOTE:

OUTDOOR WALL INDOOR WALL

CAULK

INSULATION

THROUGH THE WALL

HANGER STRAP

(AROUND VAPOR

TUBE ONLY)

1″ MIN.

SUSPENSION

LIQUID TUBE

VAPOR TUBE

JOIST

INSULATION

VAPOR TUBE

LIQUID TUBE

A94028

Fig. 2—Connecting Tubing Installation

B. Inspect Equipment

File claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit-rating plate on unit-corner
panel. It contains information needed to properly install unit.
Check rating plate to be sure unit matches job specifications.

II. INSTALL ON A SOLID, LEVEL MOUNTING PAD

If conditions or local codes require the unit be attached to pad,
tie-down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit-mounting pattern in Fig. 3
to determine base-pan size and knockout-hole location.

On rooftop applications, mount on level platform or frame. Place
unit above a load-bearing wall and isolate unit and tubing set from
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes governing rooftop applications.

Roof-mounted units exposed to winds above 5 mph may require
wind baffles to achieve adequate defrost. Consult Low-Ambient
Guideline for wind-baffle construction.

NOTE: Unit must be level to within ± 2° (± 3/8 in./ft) per
compressor manufacturer specifications.

III. CLEARANCE REQUIREMENTS

When installing, allow sufficient space for airflow clearance,
wiring, refrigerant piping, and service. Allow 30-in. clearance to
service end of unit and 48 in. above unit. For proper airflow, a 6-in.
clearance on 1 side of unit and 12 in. on all remaining sides must
be maintained. Maintain a distance of 24 in. between units.
Position so water, snow, or ice from roof or eaves cannot fall
directly on unit.

On rooftop applications, locate unit at least 6 in. above roof
surface.

IV. OPERATING AMBIENTS

The minimum outdoor-operating ambient in cooling mode is 55°F,
and the maximum outdoor-operating ambient in cooling mode is
125°F.

A

C

L

B

3

⁄8 IN. DIA TIEDOWN

KNOCKOUTS

(2) PLACES

IN BASEPAN

DIMENSIONS (IN.)

UNIT
SIZE

018 20 x 27 4–1/8 7–1/8

024–060 26 x 32 5–1/16 9-11/16

MINIMUM

MOUNTING-PAD

DIMENSIONS

TIEDOWN KNOCKOUT LOCATIONS

Fig. 3—Mounting Unit to Pad

V. CHECK INDOOR CHECK-FLO-RATER™ PISTON

Check indoor-coil piston to see if it matches the required piston
shown on outdoor unit-rating plate. If it does not match, replace
indoor-coil piston with piston shipped with outdoor unit. The
piston shipped with outdoor unit is correct for any approved
indoor-coil combination.

CAUTION: Remove indoor-coil piston if unit is to be
installed on system with a TXV-metering device.

VI. MAKE PIPING CONNECTIONS

WARNING: Relieve pressure and recover all refrigerant

before system repair or final unit disposal to avoid
personal injury or death. Use all service ports and open all
flow-control devices, including solenoid valves.

CAUTION: If ANY refrigerant tubing is buried, pro­vide a 6-in. vertical rise at service valve. Refrigerant­tubing lengths up to 36 in. may be buried without further
consideration. For lengths above 36 in., consult your local
distributor.

CAUTION: To prevent damage to unit or service valves
observe the following:

•Use a brazing shield.

•Wrap service valves with wet cloth or use a heat sink

material.

Outdoor units may be connected to indoor unit using accessory­tubing package or field-supplied refrigerant-grade tubing of cor­rect size and condition. For tubing requirements beyond 50 ft,
substantial capacity and performance losses can occur. Following
the recommendations in the Residential Split-System Long-Line
Application Guideline will reduce these losses. Refer to Table 1
for field-tubing equivalent-line length. Refer to Table 2 for
accessory requirements.

8 3⁄16″

A97375

AB

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TABLE 1—REFRIGERANT CONNECTIONS AND RECOMMENDED LIQUID- AND VAPOR-TUBE DIAMETERS (IN.)

UNIT
SIZE

018, 024 3/8 3/8 5/8 5/8 5/8 3/4
030, 036 3/8 3/8 3/4 3/4 3/4 7/8
042, 048 3/8 3/8 7/8 7/8 7/8 1–1/8

060 3/8 3/8 7/8 1–1/8 7/8 1–1/8

NOTES:

1. Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult Residential Long-Line Application Guideline.

2. Do not apply capillary-tube indoor coils to these units.

Connection Diameter Tube Diameter Connection Diameter Tube Diameter Connection Diameter Tube Diameter

LIQUID VAPOR VAPOR (LONG LINE)

For buried-line applications greater than 36 in., consult your local
distributor.

If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system.

A. Outdoor Unit Connected to Factory-Approved In­door Unit

Outdoor unit contains correct system-refrigerant charge for opera­tion with indoor unit of same size when connected by 15 ft of
field-supplied or factory-accessory tubing. Check refrigerant
charge for maximum efficiency.

B. Refrigerant Tubing

Connect tubing to fittings on outdoor unit vapor- and liquid­service valves. (See Table 1.) Use refrigerant-grade tubing.

C. Sweat Connection

CAUTION: To avoid valve damage while brazing, ser-

vice valves must be wrapped in a heat-sinking material,
such as a wet cloth.

Service valves are closed from factory and ready for brazing. After
wrapping service valve with a wet cloth, tubing set can be brazed
to service valve using either silver-bearing or non-silver-bearing
brazing material. Consult local code requirements. Refrigerant
tubing and indoor coil are now ready for leak testing. This check
should include all field and factory joints.

VII. MAKE ELECTRICAL CONNECTIONS

WARNING: To avoid personal injury or death, do not

supply power to unit with compressor terminal-box cover
removed.

Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit-rating plate. Contact local power company for correction of
improper voltage. See unit-rating plate for recommended circuit­protection device.

NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit-rating plate. Do not
install unit in system where voltage may fluctuate above or below
permissible limits.

NOTE: Use copper wire only between disconnect switch and
unit.

NOTE: Install branch-circuit disconnect of adequate size per
NEC to handle unit-starting current. Locate disconnect within sight
from and readily accessible from unit, per Section 440-14 of NEC.

A. Route Ground and Power Wires

Remove access panel to gain access to unit wiring. Extend wires
from disconnect through power wiring hole provided and into
unit-control box.

WARNING: The unit cabinet must have an uninter­rupted or unbroken ground to minimize personal injury if
an electrical fault should occur. The ground may consist
of electrical wire or metal conduit when installed in
accordance with existing electrical codes. Failure to
follow this warning can result in an electric shock, fire, or
death.

B. Connect Ground and Power Wires

Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 4.

DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES

CONTACTOR

FIELD POWER

WIRING

FIELD GROUND

WIRING

GROUND
LUG

Fig. 4—Line Power Connections

C. Connect Control Wiring

Route 24v control wires through control-wiring grommet and
connect leads to control wiring. (See Fig. 5.)

Use No. 18 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than 100 ft from unit, as measured
along the control-voltage wires, use No. 16 AWG color-coded
wire to avoid excessive voltage drop.

All wiring must be NEC Class 1 and must be separated from
incoming power leads.

Use furnace transformer, fan-coil transformer, or accessory trans­former for control power, 24v/40va minimum.

NOTE: Use of available 24v accessories may exceed the mini­mum 40va power requirement. Determine total transformer load­ing and increase the transformer capacity or split the load with an
accessory transformer as required.

→

IMPORTANT: Check factory wiring and wire connections to
ensure terminations are secured properly. Check wire routing to
ensure wires are not in contact with tubing, sheet metal, etc.

VIII. COMPRESSOR CRANKCASE HEATER

When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hr before starting unit. To furnish power to heater
only, set thermostat to OFF and close electrical disconnect to
outdoor unit.

A crankcase heater is required if refrigerant tubing is longer than
50 ft. Refer to Residential Split-System Long-Line Application
Guideline.

A91056

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