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524 L*14 -30A/H
P a c k a g e d A i r - H a n d l i n g U n i t s
w i t h P u r o n A d v a n c e ™ ( R - 4 5 4 B ) R e f r i g e r a n t
6 0 H z
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2
Detection of Flammable Refrigerants . . . . . . . . . . . . . . . . . 3
Ignition Source Mitigation . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Evacuation, Removal, and Recovery . . . . . . . . . . . . . . . . . 3
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Moving and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Checks to Refrigerating Equipment . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Refrigerant Piping Access . . . . . . . . . . . . . . . . . . . . . . . . . 15
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Leak Dissipation System . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
PRE-START CHECK FOR VFD: . . . . . . . . . . . . . . . . . . 32
Adjusting TXV for Superheat . . . . . . . . . . . . . . . . . . . . . . 33
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Indoor Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Cooling with Staged Air Volume (SAV™) . . . . . . . . . . . . 33
Operating Fan for Test and Balance (Alternate) . . . . . . . 33
Fan Speed Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53524012-01
Installation, Start-up and
Service Instructions
Printed in U.S.A.
Form No. II524L-14-30-01
(and 30 days after initial start) . . . . . . . . . . . . . . . . . . . 35
Page
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Fan Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Centering Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fan Shaft Position Adjustment . . . . . . . . . . . . . . . . . . . . . 36
Individual Fan Wheel Adjustment . . . . . . . . . . . . . . . . . . 36
Fan Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fan Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Pulley and Drive Adjustment . . . . . . . . . . . . . . . . . . . . . . 37
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . . . . . 41
VFD REMOTE KEYPAD . . . . . . . . . . . . . . . . . . . . . . . . . 43
ACH580 Operation with Remote Keypad . . . . . . . . . . . . 43
ACH580 VFD Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
ACH180 VFD Standard Keypad Detail . . . . . . . . . . . . . . 47
ACH180 Submenus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Options Menu and Main Menu . . . . . . . . . . . . . . . . . . . . . 47
Reset After Using Start-Up Assistant . . . . . . . . . . . . . . . . 49
ACH580 VFD Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 50
ACH180 VFD Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 50
• FAULTS (RED LED LIT)
• ALARMS (GREEN LED FLASHING)
VFD MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Control Panel Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Heat Sink Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Pg 1
2-25
Replaces: New
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Table of Contents
Troubleshooting
Related Manuals for Bryant 524L 14A Series
Summary of Contents for Bryant 524L 14A Series
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Page 1: Table Of Contents
524 L*14 -30A/H P a c k a g e d A i r - H a n d l i n g U n i t s w i t h P u r o n A d v a n c e ™ ( R - 4 5 4 B ) R e f r i g e r a n t 6 0 H z Installation, Start-up and Service Instructions... -
Page 2: Safety Considerations
Fan Replacement ....... . 54 • ACH580 MAIN FAN REPLACEMENT WARNING •... -
Page 3: Detection Of Flammable Refrigerants
Detection of Flammable Refrigerants Evacuate (optional for A2L refrigerants). Under no circumstances shall potential sources of ignition be used Continuously flush or purge with inert gas when using flame in the searching for or detection of refrigerant leaks. A halide torch to open circuit. -
Page 4: Pre-Installation
PRE-INSTALLATION Rigging All 524L series units can be rigged by using the shipping skid. The power supply (v, ph, and Hz) must correspond to that Units are shipped fully assembled. Do not remove shipping skids specified on unit rating plate. or protective covering until unit is ready for final placement;... - Page 5 Fig. 1 — Dimensions – Sizes 14, 16, and 25...
- Page 6 Fig. 1 — Dimensions – Sizes 14, 16, and 25 (cont)
- Page 7 Fig. 2 — Dimensions – Sizes 28 and 30...
- Page 8 Fig. 2 — Dimensions – Sizes 28 and 30 (cont)
- Page 9 Position: 9 10 11 12 13 14 15 16 17 Example: Model Type Packaging 524L = Vane Axial Fan Packaged Air-Handling 0 = Standard Puron Advance™ R-454B Refrigerant Not Used Voltage 0 = None E = 460-3-60 P = 208/230-3-60 T = 575-3-60 Service Options A = None...
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Page 10: Direct Expansion Coil
Table 1 — 524L***A Physical Data — Cooling Units (Sizes 14-25) UNIT 524L*14A 524L*16A 524L*25A NOMINAL CAPACITY (tons) 12.5 15.0 20.0 OPERATING WEIGHT (lb) Base Unit with TXV Plenum FANS Qty / Diameter (in.) 2 / 15 2 / 15 2 / 15 Nominal Airflow (cfm) 5,000... - Page 11 Table 2 — 524L***A Physical Data — Cooling Units (Sizes 28 and 30) UNIT 524L*28A 524L*30A NOMINAL CAPACITY (tons) 25.0 30.0 OPERATING WEIGHT (lb) Base Unit with TXV 1,050 1,062 Plenum FANS Qty / Diameter (in.) 2 / 18 2 / 18 Nominal Airflow (cfm) 10,000 12,000...
- Page 12 Table 3 — 524L***H Physical Data — Heat Pump Units (Sizes 16 and 25 Only) UNIT 524L*16H 524L*25H NOMINAL CAPACITY (tons) 15.0 20.0 OPERATING WEIGHT (lb) Base Unit with TXV Plenum FANS Qty / Diameter (in.) 2 / 15 2 / 15 Nominal Airflow (cfm) 5,625 8,000...
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Page 13: Rated Indoor Airflow (Cfm)
Unit Positioning Coil The unit can be mounted on the floor for vertical application with return air entering the face of the unit and supply air discharging vertically through the top of the unit. The unit can also be applied in a horizontal arrangement with return air entering horizontally and the supply air discharging horizontally. - Page 14 Overhead Suspension Accesory — Unit Size 20 Ton Discharge 7'-11 1/2" 3/8" Threaded Rod Return [2425.7] (field-supplied) Bracket TYP 4 Places (factory-supplied, field-installed) TYP 4 Places Steel Channel (field-supplied) TYP 2 Places Overhead Suspension Accessory with Hot Water Coil Overhead Suspension Accessory — Unit Sizes 25 Ton and 30 Ton Discharge 8'-9 1/2"...
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Page 15: Refrigerant Piping
Refrigerant Piping Refrigerant Piping Access See Tables 1-3 for refrigerant pipe connection sizes. For ease in The 524L series units come with standard knockouts for refriger- brazing, it is recommended that all internal solder joints be made ant piping. These knockouts are located on both sides of the unit before unit is placed in final position. - Page 16 Table 8 — Refrigerant Piping Access Hole Data FIELD-FABRICATED HOLE DIAMETERS FIELD-FABRICATED HOLE POSITION USE HOLE in. (mm) DIMENSIONS, in. (mm) UNIT NUMBERS NO. 5 NO. 6 NO.7 NO. 8 524L*14-16A 1, 2, 3, 4 — — — — — —...
- Page 17 Table 9 — Fitting Requirements (cont) UNIT ACCESS HOLE NO. CONNECTION TYPE CIRCUIT FITTING REQUIRED (in.) 1-1/8 Nipple, 3 L Suction Lower 1-1/8 Long Radius Elbow 5/8 Nipple, 2-7/8 L 5/8 45° Elbow Suction Lower 5/8 Nipple, 1-5/8 L 5/8 Long Radius Elbow 5/8 Nipple, 2-7/8 L 524L*25H 5/8 45°...
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Page 18: Condensate Drain
Condensate Drain Install a trapped condensate drain line to unit connection as shown in Fig. 12. The unit drain connection is a PVC stub. (See Fig. 13.) Some areas may require an adapter to connect to either galvanized steel or copper pipe. For these applications, install a field-supplied threaded PVC adapter. -
Page 19: Power Supply And Wiring
WARNING Failure to follow this warning could result in personal injury or death. Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National... - Page 20 Table 10 — Electrical Data — Two Speed Motors (cont) VOLTAGE LIMITS FAN MOTOR/*VFD* POWER SUPPLY UNIT VOLTAGE TYPE FLA/*MOC* MOCP 5.60 *25.0* 32.0 50.0 208/230 10.0 7.46 *25.0* 32.0 50.0 HIGH 10.0 7.46 *33.0* 42.0 70.0 5.60 *15.0* 19.0 30.0 524L*28A 10.0...
- Page 21 complete the wiring from the condensing unit to IDCB terminal block (see Fig. 16). Refer to Fig. 17 and the unit label diagram. Control Box Fan Assembly (Cover On) Unit Control Condensate Board Indoor Drain Field Control Connection Connection Wiring Entrance (Horizontal) Board Field Power...
- Page 22 NOTE: On select units, the black and blue IFM wires are reversed. Fig. 17 — Unit Wiring Diagram...
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Page 23: Three Stage Operation
THREE STAGE OPERATION The 3-stage system will run the fan at low speed with a G, Y1, and Y1+Y2 call, and at high speed with a call for Y1, Y2, and Y3. A All units are factory shipped for 2-stage cooling operation. To con- thermostat with 3 cooling stage capability is required for this sys- vert a unit to 3-stage operation, see Fig. -
Page 24: Leak Dissipation System
Leak Dissipation System 524L units use R-454B refrigerant. These units are equipped with a factory installed R-454B leak dissipation system to ensure safe operation in the event of a refrigerant leak. This system con- sists of two A2L sensors and the dissipation control board (see Fig. -
Page 25: Sequence Of Operation
Fig. 20 — Location of A2L Sensors and Dissipation Control Board (Shown with Cover Removed) — Unit in Horizontal Orientation The A2L detection sensors communicate via wiring harnesses to code 3 and return to its normal state and allow unit operations the dissipation board. - Page 26 Fig. 22 — Dissipation Control Box Detail A Detail B Detail A — Test Button Detail B — Status LED Fig. 23 — Dissipation Control Board — Shown without Dust Cover...
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Page 27: Troubleshooting
Press the Test button on the dissipation system control board to en- Table 14 — Dissipation System Required Operational sure proper dissipation system operation under each test condition Checks listed below. After pressing the Test button, system will enter Dis- sipation Mode for 60 seconds to help verify correct operation. -
Page 28: Status Led
Table 15 — Status LED Troubleshooting Table STATUS LED REASON CONTROL VERBIAGE MODE 1 Flash Sensor 1 ≥ 20% LFL REFRIG DISSIPATION ACTIVE Dissipation in Process 2 Flash Sensor 1 Open REFRIG SENSOR OPEN Dissipation in Process 5 Minute Blower Operating, Sensor < 20% 3 Flash LFL and sensors are not opened (done after DISSIPATION OFF DELAY ACTIVE... -
Page 29: Variable Frequency Drive
Variable Frequency Drive The unit is equipped with a Variable Frequency Drive (VFD) to control the indoor fan in sequence with the unit’s ventilation, cooling, and heating operation. The VFD is controlled through a 0-10 vdc signal that is provided by the Unit Control Board (UCB) in the control box. - Page 30 Variable Variable Frequency Frequency Drive (VFD) Drive (VFD) Fig. 29 — ACH180 VFD Location — 524L*28-30A (208/230-v and 460-v only) Fig. 27 — ACH180 VFD Location — 524L*14-16A, 524L*16H (208/230-v and 460-v only) Variable Frequency Variable Drive (VFD) Frequency Drive (VFD) Fig.
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Page 31: Connecting Ductwork
Connecting Ductwork Refer to the Bryant System Design Manual for the recommended OUTDOOR-AIR INLET CONNECTIONS design and layout of ductwork. Figure 32 shows recommended Connect outdoor-air inlet to field-installed accessory economizer. -
Page 32: Start-Up
Duct Flanges Fig. 33 — Duct Flange Installation START-UP Before starting unit, check the following and correct as necessary: 40RU500072 2.0 IMPORTANT! / IMPORTANT • Is unit solidly supported? • Is fan adjusted for speed and pulley alignment? EQUALIZER LINE CONDUITE D'ÉQUILIBRAGE •... -
Page 33: Adjusting Txv For Superheat
Adjusting TXV for Superheat SECOND STAGE (Y2) Lower the cooling set point until the second stage compressor The unit-mounted thermostatic expansion valve(s) is/are factory starts. The indoor fan speed is dependent on the number of set to provided superheat at the bulb location in 10°F to 15°F cooling stages: (5.5 to 8.3°C) range. -
Page 34: Fan Speed Set Up
Table 16 — 524L Min cfm Per Fan Motor Type 2-SPEED FAN 2-SPEED FAN UNIT MOTOR (AT HIGH MOTOR (AT LOW SPEED) SPEED) 524L*14A 4,056 2,704 524L*16A/H 4,500 3,000 524L*25A/H 7,500 5,000 524L*28A 8,450 5,633 524L*30A 10,140 6,760 Fan Speed Set Up These units contain a variable frequency drive (VFD) fan assem- bly. -
Page 35: Maintenance
The above list may not include all maintenance items. Inspection intervals may • condenser fan motor mounting bolts tightness vary depending on climate and opening hours. Consult your Bryant dealer about a service contact for seasonal inspections. • compressor mounting bolts b. -
Page 36: Fan Motor Lubrication
Fan Motor Lubrication Fan Shaft Position Adjustment Fan motor supplied with unit is permanently lubricated and Loosen setscrew or locking collar of each fan shaft bearing. requires no further lubrication. Slide shaft into correct position and replace locking collar. (See Fig. -
Page 37: Fan Pulley Alignment
Pulley(s) Belts Motor Pulley(s) Slot Mounting Bolts Fig. 39 — Fan Motor Mounting Fan Pulley Alignment Pulley and Drive Adjustment Align as follows: To obtain desired fan speed, refer to the fan motor, drive data and performance data in Tables 20-29 and adjust fan motor pulley as Loosen setscrews on pulleys. -
Page 38: Two-Speed Motor
Table 20 — Fan Motor Data, 524L***A Standard Motor, Two Speed UNIT 524L*14A 524L*16A 524L*25A 524L*28A 524L*30A 208/230-3-60 and 460-3-60 Speed (rpm) 1,735 1,750 1,755 1,760 1,755 10.0 Frame (NEMA) 56HY 56HY 184T S213T S215T Shaft Diameter (in.) 1-1/8 1-3/8 1-3/8 575-3-60 Speed (rpm) - Page 39 Table 26 — Standard Drive Data UNIT 524L*14A 524L*16A/H 524L*25A/H 524L*28A 524L*30A MOTOR DRIVE Motor Pulley Pitch Diameter (in.) 2.8-3.8 2.8-3.8 3.7-4.7 4.3-5.3 4.3-5.3 Pulley Factory Setting Full Turns Open FAN DRIVE Pulley Pitch Diameter (in.) 11.0 11.0 Pulley Bore (in.) 1-1/16 1-1/16 1-1/16...
- Page 40 Table 29 — Fan Performance Data — 524L EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (cfm) 3,750 0.43 0.55 0.83 1.12 1.41 1.72 2.05 4,300 0.62 0.74 1.05 1.38 1.70 2.04 2.39 524L*14A 5,000 0.92 1.06 1.39 1.76 2.14 2.52 2.91 5,700 1.32...
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Page 41: Airflow (Cfm)
Table 30 — Factory-Supplied Pressure Drop Table 31 — ACH180 VFD Terminal Designations PRESSURE DROP TERMINAL FUNCTION UNIT AIRFLOW (cfm) (in. wg) 3,750 0.06 Three-Phase Main Circuit Input Power Supply 524L*14A 5,000 0.10 T1/U 6,250 0.13 Three-Phase AC Output to Motor, 0-v to T2/V Maximum Input Voltage Level 4,500... -
Page 42: Indoor Fan Motor
INDOOR FAN MOTOR VFD FUSES The indoor fan motors used with the VFD are specially manufac- Table 33 details the fuse requirement for the VFD installed in tured for use with VFD power circuits. The motor winding insula- 524L units. Check the control wiring diagram label on the specific tion is specially formulated to resist breakdown due to voltage unit in use for the fuse location. -
Page 43: Fan Fault Detection
If diagnostics troubleshooting has determined that the drive is drive must be set in AUTO mode. The word “AUTO” will appear defective during the warranty period, contact Bryant. in the upper left hand corner of the VFD display. Press the AUTO FAULTS button to set the drive in AUTO mode. -
Page 44: First Start Assistant
Use the UP or DOWN keys to highlight the desired CONFIGURATION OVERRIDE HAZARD parameter group and press SEL (Press Do not use ABB or Bryant start-up assistant on this VFD Use the UP or DOWN keys to highlight the desired application. Use of start-up assistant will override the parameter and press EDIT (Press factory VFD configurations. -
Page 45: Ach580 Standard Display Mode
ACH580 STANDARD DISPLAY MODE From Home view press “Options” then “Edit Home View” to change the Home layout, the middle of the LCD display can be Use the standard display mode to read information on the drive configured to display 3 parameter values, graphs or digital status and operate the drive. -
Page 46: Drive Parameter Backup Mode
DRIVE PARAMETER BACKUP MODE CLOCK SET MODE The drive parameter back up mode is used to export the parame- Use the clock set mode to set the date and time for the internal ters from one drive to another. The parameters can be uploaded clock of the VFD. -
Page 47: Ach180 Vfd Standard Keypad Detail
ACH180 VFD Standard Keypad Detail Options Menu and Main Menu By default, the ACH180 has an integrated control panel. See The ACH180 drives have 5 menu options available (see Fig. 50): Fig. 48. • motor data/motor parameters Display — Shows the Home view as default. •... - Page 48 Start Mode - Const Time, Automatic Stop Mode - Coast, Ramp, DC hold Acceleration Time Deceleration Time Maximum Allowed Speed Motor Type - AsynM, PMSM, EC, Ti Maximum Allowed Current Control Mode - Scalar, Vector Minimum Allowed Speed Nominal Power Nominal Current Fig.
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Page 49: Reset After Using Start-Up Assistant
Reset After Using Start-Up Assistant Initial start-up has been performed at the factory. Use of the start up assistant will override factory VFD configurations. CAUTION CONFIGURATION OVERRIDE HAZARD Do not use start-up assistant on this VFD application! Use of start-up assistant will override the factory VFD configurations! Use the following procedure to reset the factory configurations for ACH180 VFDs: Disconnect unit power. -
Page 50: Ach580 Vfd Diagnostics
FAULTS (RED LED LIT) If diagnostics troubleshooting has determined that the drive is de- fective during the warranty period, contact Bryant. The VFD signals that it has detected a severe error, or fault, by: •... - Page 51 Hardware manual of the drive. If an earth fault is found, fix or change the motor cable and/or motor. If no earth fault can be detected, contact your local Bryant representative. Check motor and motor cable for cabling errors.
- Page 52 Table 34 — Fault and Alarm Codes for ACH580/ACH180 VFD (cont) CODE (HEX) WARNING / AUX. CODE CAUSE WHAT TO DO Informative warning. See the settings in parameter group 31 AFAA Auto Reset A fault is about to be auto reset. Fault functions.
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Page 53: Vfd Maintenance
Maintenance and component replacement intervals are based on the assumption that the equipment is operated within the specified ratings and ambient conditions. Bryant recommends annual drive inspections to ensure the highest reliability and optimum performance. b. Long term operation near the specified maximum ratings or ambient conditions may require shorter maintenance intervals for certain components. -
Page 54: Heat Sink Cleaning
If the drive is operated in a critical part of a process, fan replacement is recommended once these symptoms Use the following procedure to clean the heat sink on ACH580 start appearing. Replacement fans are available from Bryant. VFDs: Turn off and lock out unit power. - Page 55 Fig. 63 — Open Keypad Cover and Fig. 61 — Remove Main Fan Fingerguard Remove Keypad Fig. 62 — Remove Main Fan ACH580 AUXILIARY COOLING FAN REPLACEMENT To replace the internal enclosure fan for frame sizes R1 and R2 perform the following (see Fig. 63, 64, and 65): Remove power from drive.
- Page 56 Fig. 67 — Disconnecting the Fan Free the fan clips and remove the fan from the fan cover. Install the new fan into the fan cover. Make sure that the air flow is in the correct direction. The air flows in from the bottom of the drive and out from the top of the drive.
- Page 57 Carefully put the fan cover into position in the drive. Make The factory-installed VFD is wired and agency approved as out- lined in this manual. This VFD is utilized to help provide added sure that the fan power cable is routed correctly. Push the efficiencies and comfort during the cooling operation.
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Page 58: Cleaning Insulation
Condensate Drains Keep condensate drains free of dirt and foreign matter. Return-Air Filters Refer to Replacing Filters section on page 58 for filter accessibili- ty and removal. Replace with clean filters of the sizes listed in Tables 1-3. Coil Removal Remove unit panels and corner posts as required. - Page 59 DECOMMISSIONING If a vacuum is not possible, make a manifold so that refrig- erant can be removed from various parts of the system. Before carrying out this procedure, it is essential that the techni- Make sure that the cylinder is situated on the scales before cian is completely familiar with the equipment and all its detail.
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Page 60: Appendix A - Vfd Parameters
APPENDIX A — VFD PARAMETERS Table A — ACH180 Common Parameters Table B — ACH580 Common Parameters Parameters Description Setting Parameters Description Setting 10.24 RO1 Source FAULT (-1) [15] 10.24 RO1 Source — 12.17 AI1 Min 2.00% [0.200 V] 10.30 RO3 Source FAULT (-1) 13.12... - Page 61 APPENDIX A — VFD PARAMETERS (cont) Table C — ACH180 VFD Parameters for 524L Units with Electromechanical Controls NOM. MOTOR NOM. NOM. NOM. MOTOR REPLACEMENT VOLTAGE PKG ABB VFD PART DRIVE AMPS FREQ AMPS PART COMPONENT DESCRIPTION PARAMETERS ACH180 NUMBER NUMBER NUMBER 99.07...
- Page 62 © 2025 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53524012-01 Printed in U.S.A. Form No. II524L-14-30-01 Pg 62 2-25 Replaces: New...
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Page 63: Start-Up Checklist
START-UP CHECKLIST Split Systems with 524L Units (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up, and Service document. - Page 64 CHECK VOLTAGE IMBALANCE Line-to-line volts: AB_____________ VAC______________ VBC______________V (AB + AC + BC)/3 = average voltage = _______________V Maximum deviation from average voltage = _______________V Voltage imbalance = 100 x (max deviation)/(average voltage) = ________________ If over 2% voltage imbalance, DO NOT ATTEMPT TO START SYSTEM! Call local power company for assistance.
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