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548J
Bryant 548J User Manual
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6
Fig. 7 — ACH550
/580 VFD Location for
the followi
ng units: 580J/558J*07
(575V units only)
Fig. 8 — ACS320 VFD Location for the follo
wing units: 580J/558J*08 (208/2
30V and 460V units only)
V
ariable
Frequency
Drive (VFD)
V
ariable
Frequency
Drive (VFD)
5
7
Table of Contents
Table of Contents
1
Safety Considerations
1
General
2
2-Speed Indoor Fan Motor Indoor Fan Speed System
2
Identifying Factory Option
2
Unit Installation with 2-Speed Indoor Fan Motor Option
2
Pre-Start Check, 2-Speed Indoor Fan Motor Option
5
Start-Up, 2-Speed Indoor
16
Fan Motor Option
16
Compressor Rotation
16
Indoor Fan Motor
16
Cooling with 2-Speed Indoor Fan Motor
16
Operating Sequences, 2-Speed Indoor Fan Motor Option
16
Cooling (FAN Switch in AUTO)
16
Heating
17
Operating Fan for Test and Balance
17
Service
18
2-Speed Indoor Fan Motor Option Components
18
Fan Speed Relay Board
18
Configuration Jumpers
18
Variable Frequency Drive
18
Central Terminal Board Jumpers (548J/549J/551J/558J/580J/581J Series Only)
20
VFD Fuses
21
Control and Power Wiring Diagrams
22
Vfd Alarms and Faults Troubleshooting
29
Alarms
29
Faults
29
Vfd Maintenance
30
Heat Sink Cleaning
30
Fan Replacement
31
Bypass the VFD
33
Vfd Parameters
34
Vfd Remote Keypad
45
ACH550/ACS320 Operation with Remote Keypad
45
ACH550/ACS320 VFD Modes
45
ACH550/ACS320 VFD Diagnostics
47
Correcting Faults
47
History
47
Reset after Using Start-Up Assistant
50
ACH580 Operation with Remote Keypad
51
ACH580 VFD Modes
52
ACH580 VFD Diagnostics
54
All Ach580, Ach550 and Acs320 Keypads
57
Control Panel Cleaning
57
Battery Replacement
57
VFD Remote Keypad Parameters
57
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Installation Instructions
24 pages
5
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Bryant 548J Specifications
General
Brand
Bryant
Model
548J
Category
Air Conditioner
Language
English
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