Bryant 764A Installation, Start-Up And Service Instructions Manual
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Bryant 764A Installation, Start-Up And Service Instructions Manual

Bryant 764A Installation, Start-Up And Service Instructions Manual

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IMPORTANT - READ BEFORE INSTALLING
1. Read and become familiar with these installation in-
structions before installing this unit (Fig. 1). Retain these
instructions for future maintenance and repair.
2. Be sure the installation conforms to all applicable local
and national codes. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
I. Locate the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
II. Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 5
III. Unit Duct and Field Connections . . . . . . . . . . . . . . 5
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,12
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12,13
CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . 14
I. Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
II. Evaporator Fan and Motor . . . . . . . . . . . . . . . . . . 14
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-18
I. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
II. Evaporator Fan and Motor . . . . . . . . . . . . . . . . . . 15
III. Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
IV. Electrical Controls and Wiring . . . . . . . . . . . . . . . 16
V. Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
VI. Metering Device Servicing . . . . . . . . . . . . . . . . . . 16
VII. Liquid Line Strainer . . . . . . . . . . . . . . . . . . . . . . . . 16
VIII. Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . 16
IX. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . 16
COOLING TROUBLESHOOTING CHART . . . . . . . . . . . . 19
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

WARNING: Improper installation, adjustment, alter-
ation, service, maintenance, or use can cause explo-
sion, fire, electric shock, or other occurrences which may
injure you or damage your property. Consult a quali-
fied installer or service agency for information or assis-
tance. The qualified installer or agency must use only
factory-authorized kits or accessories when modifying
this product.
Recognize safety information. This is the safety-alert symbol
(
). When you see this symbol on the unit and in instruc-
tions 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
installation, start-up and
service instructions
PACKAGED AIR
CONDITIONERS
Page
Cancels: II 564A-24-1
Fig. 1 - Unit 564A and 764A (Size 036 Shown)
symbol
. Danger identifies the most serious hazards which
will result in severe personal injury or death. Warning indi-
cates a condition that could result in personal injury.
Caution is used to identify unsafe practices which would
result in minor personal injury or product and property
damage.
WARNING: Before performing service or main-
tenance operations on system, turn off main power
switches to unit. Turn off accessory heater power switch
if applicable. Electric shock can cause personal injury.
1. The power supply (volts, phase, and hertz) must corre-
spond to that specified on unit rating plate.
2. The electrical supply provided by the utility must be suf-
ficient to handle load imposed by this unit.
3. Refer to Installation, Locate the Unit section (page 5)
and Fig. 2-4 for locations of electrical inlets, condensate
drain, duct connections, and required clearances before
setting unit in place.
4. This installation must conform with local building codes
and with NEC (National Electrical Code) or NFPA
(National Fire Protection Association) 54 TIA-54-84-1.
Refer to provincial and local plumbing or wastewater codes
and other applicable local codes.
5. Approved for outdoor installation on wood flooring or on
class A, B, or C roof covering materials.
INSTALLATION
All units can be connected into existing duct systems that are
sized properly and designed to handle the airflow shown in
the Air Delivery table and Indoor Airflow and Airflow Adjust-
ments section.
NOTE: When installing any accessory item, see the manu-
facturer's installation instructions packaged with the acces-
sory. Use factory-authorized kits or accessories when
modifying this unit.
564A
Sizes 024-060
764A
Sizes 024-060
II 564A-24-2
6/1/96

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Summary of Contents for Bryant 764A

  • Page 1: Table Of Contents

    CAUTION. These words are used with the safety-alert Cancels: II 564A-24-1 Page Fig. 1 — Unit 564A and 764A (Size 036 Shown) symbol . Danger identifies the most serious hazards which will result in severe personal injury or death. Warning indi- cates a condition that could result in personal injury.
  • Page 2 UNIT UNIT ELECTRICAL WEIGHT 564A/764A CHARACTERISTICS 208/230-1-60 222 101 355.6 [14.00] 508.0 [20.00] 241.3 [9.50] 208/230-1-60 236 107 355.6 [14.00] 508.0 [20.00] 241.3 [9.50] 208/230-1-60, 208/230-3-60 250 114 355.6 [14.00] 508.0 [20.00] 241.3 [9.50] Fig. 2 — Base Unit Dimensions — 564A/764A024-036 CENTER OF GRAVITY mm [in.]...
  • Page 3 UNIT UNIT ELECTRICAL WEIGHT 564A/764A CHARACTERISTICS 208/230-1-60, 208/230-3-60 297 135 355.6 [14.00] 508.0 [20.00] 304.8 [12.00] 208/230-1-60, 208/230-3-60 310 114 355.6 [14.00] 508.0 [20.00] 304.8 [12.00] Fig. 3 — Base Unit Dimensions — 564A/764A042,048 CENTER OF GRAVITY mm [in.] —3—...
  • Page 4 UNIT UNIT ELECTRICAL WEIGHT 564A/764A CHARACTERISTICS Lb Kg 230-1-60, 208/230-3-60, 350 159 355.6 [14.00] 508.0 [20.00] 355.6 [14.00] 460-3-60 CENTER OF GRAVITY mm [in.] Fig. 4 — Base Unit Dimensions — 564A/764A060 —4— LEGEND NEC — National Electrical Code REQUIRED CLEARANCES TO COMBUSTIBLE MATERIAL, mm [in.]...

  • Page 5: Installation

    I. LOCATE THE UNIT A. Clearance Provide sufficient space for condenser airflow clearance, wir- ing, and servicing unit. See Fig. 2-4. Locate unit where supply- and return-air ducts can be conveniently brought out to unit duct connections. Unit may be placed with duct side as close to building as top removal, duct connections, and power connec- tions permit.
  • Page 6 UNIT 564A AND 764A OPERATING WEIGHT (lb) COMPRESSOR TYPE REFRIGERANT Charge (lb) REFRIGERANT METERING DEVICE CONDENSER COIL Rows...Fins/in. Total Face Area (sq ft) CONDENSER-FAN MOTOR Nominal Rpm Motor Hp Diameter (in.) EVAPORATOR COIL Rows...Fins/in. Total Face Area (sq ft) EVAPORATOR-FAN MOTOR Blower Motor Size (in.)
  • Page 7 Install Flanges for Ductwork Connections (564A/764A060 only) The size 060 units are shipped with flanges which must be field-installed on the unit. To install unit flanges: 1. Five pieces of flange are shipped on the return air open- ing of the unit. Remove the flanges from the shipping position.
  • Page 8 LEGEND NEC — National Electrical Code Power Wiring Control Wiring *Required for electric heater when single-point connection is not used. Fig. 12 — Typical Installation C. Converting Horizontal Discharge Units to Downflow (Vertical) Discharge WARNING: Before performing service or mainte- nance operations on system, turn off main power to unit.
  • Page 9 Route thermostat wires through grommet providing a drip loop at the panel. Connect low-voltage leads to the thermo- stat as shown in Fig. 16. The unit transformer supplies 24-v power for complete system including accessory electrical heater. Transformer is factory wired for 230-v operation. If supply voltage is 208 v, HIGH-VOLTAGE LOW-VOLTAGE POWER WIRING...
  • Page 10 VOLTAGE NOMINAL RANGE UNIT VOLTAGE 564A/764A (V-Ph-Hz) 208/230-1-60 208/230-1-60 208/230-1-60 208/230-3-60 208/230-1-60 208/230-3-60 208/230-1-60 208/230-3-60 230-1-60 208/230-3-60 460-3-60 LEGEND — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration — Indoor (Evaporator) Fan Motor — Locked Rotor Amps — Minimum Circuit Amps MOCP —...

  • Page 11: Pre-Start-Up

    Special Procedures for 208-V Operation WARNING: Make sure that the power supply to the unit is switched OFF before making any wiring changes. Electrical shock can cause personal injury or death. 1. Disconnect the orange transformer-primary lead from the contactor. See unit wiring label. 2.

  • Page 12: Start-Up

    Proceed as follows to inspect and prepare the unit for initial start-up: 1. Remove all access panels. 2. Read and follow instructions on all WARNING, CAU- TION, and INFORMATION labels attached to, or shipped with, unit. 3. Make the following inspections: a.

  • Page 13: Indoor Airflow And Airflow Adjustments

    Units 564A/764A024, 036, 048, and 060 blower motors are factory wired for low speed operation. Units 564A/764A030 and 042 are factory wired for medium speed operation. Table 3 — Dry Coil Air Delivery — Horizontal Discharge UNIT IFM SPEED AIRFLOW 564A/764A SETTING High Low* High High Low* High 048†...

  • Page 14: Care And Maintenance

    CARE AND MAINTENANCE NOTE: The following steps should be performed by a quali- fied service person. WARNING: Before installing or servicing unit, turn off main power to system to avoid shock hazard or in- jury from rotating parts. There may be more than one disconnect switch.

  • Page 15: Ii. Evaporator Fan And Motor

    SERVICE NOTE: The following steps should be performed by a quali- fied service person. WARNING: Before installing or servicing unit, turn off main power to system to avoid shock hazard or in- jury from rotating parts. There may be more than one disconnect switch.

  • Page 16: Electrical Controls And Wiring

    IV. ELECTRICAL CONTROLS AND WIRING Inspect and check the electrical controls and wiring an- nually. Be sure to turn off all electrical power to the unit. Remove the control, evaporator fan, and compressor compart- ment access panels to locate all the electrical controls and wiring.
  • Page 17 Fig. 19 — Cooling Charging Chart — 564A/764A024 Fig. 21 — Cooling Charging Chart — 564A/764A036 Fig. 20 — Cooling Charging Chart 564A/764A030 Fig. 22 — Cooling Charging Chart — 564A/764A042 —17—...
  • Page 18 Fig. 24 — Cooling Charging Chart — 564A/764A060 Fig. 23 — Cooling Charging Chart — 564A/764A048 —18—...

  • Page 19: Cooling Troubleshooting Chart

    SYMPTOM Compressor and con- Power failure denser fan will not Fuse blown or circuit breaker tripped start. Defective thermostat, contactor, transformer, or control relay Insufficient line voltage Incorrect or faulty wiring Thermostat setting too high Compressor will not Faulty wiring or loose connections in start but condenser compressor circuit fan runs.
  • Page 22 Our packaged service training programs provide an excellent way to increase your knowledge of the equipment discussed in this manual. Product programs cover: • Unit Familiarization • Installation Overview A large selection of product, theory, and skills programs is available. All programs include a video cassette and/or slides and a companion booklet.

  • Page 24: Preliminary Information

    I. PRELIMINARY INFORMATION MODEL NO.: DATE: II. PRE-START-UP (insert checkmark in box as each item is completed) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS...

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