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Bryant 569D - User Manual

Bryant 569D
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Cancels: II 569D-72-1 II 569D-72-2
9/15/04
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
I. Complete Pre-Installation Checks . . . . . . . . . . . . . . 1
II. Rig and Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . 9
III. Complete Refrigerant Piping
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
IV. Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 11
V. Complete Electrical Connections. . . . . . . . . . . . . . 11
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
I. System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
II. Leak Test and Dehydration . . . . . . . . . . . . . . . . . . . 15
III. Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . 15
IV. Preliminary Charge . . . . . . . . . . . . . . . . . . . . . . . . . 15
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-20
I. 569D, 566E, 569F Units . . . . . . . . . . . . . . . . . . . . . . 15
II. 576C, 566D Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . 20, 21
I. Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
II. Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-24
I. Capacity Control (576C, 566D Units) . . . . . . . . . . . 21
II. Head Pressure Control
(566D, 566E150-240 Units Only) . . . . . . . . . . . . . 21
III. Time Guard II Circuit (566D Only). . . . . . . . . . . . . . 21
IV. Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . 22
V. Compressor Protection . . . . . . . . . . . . . . . . . . . . . . 22
VI. Low-Pressure Switches. . . . . . . . . . . . . . . . . . . . . . 22
VII. High-Pressure Switches . . . . . . . . . . . . . . . . . . . . . 22
VIII. Discharge Gas Thermostat . . . . . . . . . . . . . . . . . . . 22
IX. Outdoor Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
X. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
XI. Coil Cleaning and Maintenance . . . . . . . . . . . . . . . 22
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . 25, 26
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical
components, and equipment location (roofs, elevated struc-
tures, etc.).
Only trained, qualified installers and service mechanics
should install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to
the equipment.
Follow all safety codes. Wear safety glasses and work gloves.
Keep quenching cloth and fire extinguisher nearby when
brazing. Use care in handling, rigging, and setting bulky
equipment.
INSTALLATION
I. COMPLETE PRE-INSTALLATION CHECKS
A. Uncrate Unit
Remove unit packaging except for the top skid assembly,
which should be left in place until after the unit is rigged
into its final location.
B. Inspect Shipment
File claim with shipping company if shipment is damaged or
incomplete.
C. Consider System Requirements
• Consult local building codes and National Electrical Code
(NEC) for special installation requirements.
• Allow sufficient space for airflow clearance, wiring, refrig-
erant piping, and servicing unit. See Fig. 1-4 for unit
dimensions and weight distribution data.
• Locate unit so that outdoor coil (condenser) airflow is
unrestricted on all sides and above.
• Unit may be mounted on a level pad directly on the base
channels or mounted on a raised structural steel frame.
See Tables 1A to 1C for unit operating weights. See
Fig. 1-4 for weight distribution based on recommended
support points.
NOTE: If vibration isolators are required for a particular
installation, use the data in Fig. 1-4 to make the proper
selection.
WARNING: Before installing or servicing system,
always turn off main power to system and install lock-
out tag on disconnect. There may be more than one dis-
connect switch. Electrical shock can cause personal
injury.
installation, start-up and
service instructions
COMMERCIAL AIR-COOLED
CONDENSING UNITS
566D/E
569D/F
576C
Sizes 072-240
6to20Tons

Table of Contents

Questions and Answers

  • M
    Matthew HansenAug 20, 2025
    What to do if Bryant 569D compressor is running but cooling is insufficient?
    • B
      brian11Aug 20, 2025
      If the compressor is running but cooling is insufficient, it could be due to suction pressure issues. If the suction pressure is low: * Add refrigerant. * Check the refrigerant charge and outdoor-air fan thermostat settings. * Clean or replace the filters. * Replace the power head. * Check the low-pressure setting. * Remove any obstructions. If the suction pressure is high: * Check the unloader adjustments and setting. * Check for open doors or windows near the fan coil.
  • R
    Raymond WhiteAug 22, 2025
    Why does my Bryant 569D unit operate too long or continuously?
    • M
      Michael WilliamsAug 22, 2025
      If the unit operates too long or continuously, try the following: 1. Add refrigerant. 2. Replace the control. 3. Purge and evacuate the system. 4. Clean or replace components as needed.
  • R
    riversrachelAug 25, 2025
    What causes a Bryant 569D Air Conditioner compressor to lose oil?
    • M
      Meagan TownsendAug 26, 2025
      If the compressor loses oil: 1. Repair any leaks. 2. Check the wiring and relays. Check the heater and replace if defective. 3. Check the piping for oil return and replace if necessary.
  • M
    Maria HensonAug 28, 2025
    What causes a frosted suction line on my Bryant 569D?
    • B
      brookegrahamAug 28, 2025
      If the suction line is frosted, adjust the expansion valve.
  • C
    Catherine StephensonAug 30, 2025
    Why is the liquid line hot on my Bryant 569D Air Conditioner?
    • K
      kimlorraineAug 30, 2025
      If the liquid line is hot: 1. Repair any leaks and recharge the system. 2. Adjust the expansion valve.
  • L
    Linda GonzalesSep 1, 2025
    What causes a frosted liquid line on my Bryant 569D?
    • V
      Valerie LopezSep 1, 2025
      If the liquid line is frosted: 1. Remove any restrictions or replace the affected component. 2. Replace the valve.
  • H
    Helen BraunSep 4, 2025
    Why does my Bryant Air Conditioner compressor stop on high-pressure switch?
    • B
      Brittany BarrSep 4, 2025
      The compressor might be stopping due to the high-pressure switch. This could be related to the outdoor fan. If the outdoor fan is on: * Consider replacing the switch. * Confirm the fan's rotation and correct it if necessary. * Remove any obstructions blocking the fan. * Clear the airflow area around the fan. * Recover refrigerant and recharge as needed. * Recover refrigerant as required. * Consult the power company. * Check or replace the filter drier and expansion valve. Ensure the compressor discharge service valve is fully open. If the outdoor fan is off: * Tighten the fan hub setscrews. * Check the power and capacitor. * Replace the bearings. * Check the overload rating and look for any obstructions to the fan blade. * Replace the motor if necessary.
  • K
    Karen WoodSep 6, 2025
    What causes my Bryant 569D compressor to cycle on the low-pressure switch?
    • L
      Leslie PowellSep 6, 2025
      The cycling of the compressor on the low-pressure switch can be due to several reasons. If the indoor-air fan is running, try these: * Open the valve fully. * Check the liquid line solenoid valve(s) for proper operation and replace if necessary. * Replace the filter drier. * Replace the power head. * Add charge, and check the low-pressure switch setting. If the airflow is restricted: * Check the refrigerant charge. * Clean the coil fins. * Clean or replace the filters. * Check the damper operation and position. If the indoor-air fan is stopped: * Tighten all connections. * Replace the relay. * Check the power supply. * Replace the motor. * Replace or tighten the belt.
  • J
    Jerry Rush Jr.Sep 9, 2025
    Why is my Bryant Air Conditioner system noisy?
    • B
      buchanansusanSep 9, 2025
      If the system is noisy: 1. Support the piping as required. 2. Check the valve plates for valve noise. Replace the compressor if the bearings are worn.
  • A
    andreadelgadoSep 12, 2025
    What to do if Bryant Air Conditioner compressor will not unload?
    • B
      Brandon HurleySep 12, 2025
      If the compressor will not unload: 1. Replace the unloader. 2. Replace the valve. 3. Rewire correctly. 4. Replace the spring.

Summary

SAFETY CONSIDERATIONS

General Safety Precautions

Essential safety advice for handling equipment, including PPE and hazard warnings.

INSTALLATION

Complete Pre-Installation Checks

Ensures all necessary checks are completed before unit installation.

PRE-START-UP

System Check

Verifies all components and electrical connections are secure and functional before operation.

Leak Test and Dehydration

START-UP

Start-Up Procedures for 569 D, 566 E, 569 F Units

Details start-up steps including preliminary checks, compressor rotation, and electrical connections for specific models.

Start-Up Procedures for 576 C, 566 D Units

Details start-up steps including preliminary checks and oil charge for 576C and 566D models.

TROUBLESHOOTING

Compressor Does Not Run

Lists potential causes and solutions for a compressor that fails to start.

Compressor Stops on High-Pressure Switch

Addresses issues when the compressor stops due to high-pressure switch activation.

Compressor Cycles on Low-Pressure Switch

Troubleshoots compressor cycling caused by low-pressure switch activation.

Compressor Running but Cooling Insufficient

Compressor Will Not Unload

Compressor Will Not Load

START-UP CHECKLIST

Outdoor Unit Pre-Start-Up Checks

Checks power supply, wiring, grounding, and component security before operation.

Control Checks

Piping Checks

Bryant 569D Specifications

General IconGeneral
Operating Voltage208/230V
Phase1
RefrigerantR-410A
Dimensions (Outdoor Unit)Varies by model
Weight (Outdoor Unit)Varies by model

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