Bryant 524J 16 Series Installation, Start-Up And Service Instructions Manual
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Bryant 524J 16 Series Installation, Start-Up And Service Instructions Manual

Bryant 524J 16 Series Installation, Start-Up And Service Instructions Manual

Packaged air-handling units with puron (r-410a) refrigerant 60 hz
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5 2 4 J * 1 4 - 1 6
P a c k a g e d A i r - H a n d l i n g U n i t s
with Pu ro n
®
( R-4 1 0A ) Refr i g er an t
6 0 H z
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Moving and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . . . 10
Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Refrigerant Piping Access . . . . . . . . . . . . . . . . . . . . . . . . . 11
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
524J***A/H ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Indoor Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Operating Fan for Test and Balance . . . . . . . . . . . . . . . . . 24
Fan Speed Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
(and 30 days after initial start) . . . . . . . . . . . . . . . . . . . 25
Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fan Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Centering Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fan Shaft Position Adjustment . . . . . . . . . . . . . . . . . . . . . 26
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53524004-01
Installation, Start-up and
Service Instructions
Page
Printed in U.S.A.
Individual Fan Wheel Adjustment . . . . . . . . . . . . . . . . . . 26
Fan Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fan Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Fan Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Pulley and Drive Adjustment . . . . . . . . . . . . . . . . . . . . . . 28
Variable Frequency Drive . . . . . . . . . . . . . . . . . . . . . . . . . 33
Bypass the VFD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Cleaning Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Cleaning Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Replacing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
APPENDIX A - VFD PARAMETERS . . . . . . . . . . . . . 39
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions
of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit, and other safety precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguisher available for all brazing operations.
It is important to 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
CAUTION, and NOTE. These words are used with the
safety-alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe practices,
which may result in minor personal injury or product and
Pg 1
words
DANGER, WARNING,
3-23
Replaces: II524J-7-16-02

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  • Page 1: Table Of Contents

    5 2 4 J * 1 4 - 1 6 P a c k a g e d A i r - H a n d l i n g U n i t s with Pu ro n ® ( R-4 1 0A ) Refr i g er an t 6 0 H z Installation, Start-up and...

  • Page 2: Pre-Installation

    property damage. NOTE is used to highlight suggestions PRE-INSTALLATION which will result in enhanced installation, reliability, or The power supply (v, ph, and Hz) must correspond to that operation. specified on unit rating plate. The electrical supply provided by the utility must be suffi- DANGER cient to handle load imposed by this unit.
  • Page 3 Fig. 1 — Dimensions — Size 14 and 16...
  • Page 4 Fig. 1 — Dimensions — Size 14 and 16 (cont)
  • Page 5 10 11 12 13 14 15 16 17 5 2 4 J E 1 4 A 2 0 0 A 2 U A A A Model Type Packaging 524J = Bryant Fan Coil A = Standard Puron ® R-410A Refrigerant...
  • Page 6 Table 1 — 524J*14-16A Physical Data, English — Cooling Units UNIT 524J* NOMINAL CAPACITY (tons) 12-1/2 OPERATING WEIGHT (lb) Base Unit with TXV Plenum FANS Qty...Diam. (in.) 2...15 2...15 Nominal Airflow (cfm) 5000 6000 Airflow Range (cfm) 3750-6250 4500-7500 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 575-3-60 Motor Speed (rpm)
  • Page 7 Table 2 — 524J*14-16A Physical Data, SI — Cooling Units UNIT 524J* NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Base Unit with TXV Plenum FANS Qty...Diam. (mm) 2...381 2...381 Nominal Airflow (L/s) 2360 2831 Airflow Range (L/s) 1770-2949 2124-3539 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 2.16 2.16...
  • Page 8 Table 3 — 524J*16H Physical Data, English — Heat Pump Units UNIT 524J* NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb) Base Unit with TXV Plenum FANS Qty...Diam. (in.) 2...15 Nominal Airflow (cfm) 5625 Airflow Range (cfm) 4500-7500 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 575-3-60 Motor Speed (rpm)
  • Page 9 Table 4 — 524J*16H Physical Data, SI — Heat Pump Units UNIT 524J* NOMINAL CAPACITY (kW) OPERATING WEIGHT (kg) Base Unit with TXV Plenum FANS Qty...Diam. (mm) 2...381 Nominal Airflow (L/s) 2655 Airflow Range (L/s) 2124-3539 Nominal Motor Hp (Standard Motor) 208/230-3-60 and 460-3-60 2.76 575-3-60...

  • Page 10: 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 dis- charging vertically through the top of the unit. The unit can also be applied in a horizontal arrangement with return air en- tering horizontally and the supply air discharging horizontally.

  • Page 11: Refrigerant Piping

    Refrigerant Piping field-fabricated to accommodate the piping. See Fig. 6 for the positions and dimensions of the additional access holes See Tables 1-4 for refrigerant pipe connection sizes. For ease in required for 575J*16H units. Recommended access hole use is brazing, it is recommended that all internal solder joints be also listed for all units.
  • Page 12 Table 8 — Factory-Installed Nozzle and Distributor Data FEEDER TUBES PER DISTRIBUTOR NOZZLE UNIT COIL TYPE STD DISTRIBUTOR QTY...PART NO. QTY... PART NO. QTY...PART NO. QTY...SIZE (in.) 524J*14A 4 Row 2...HZAE-6-KX 2...1113 12...3/16 2...G3 524J*16A 4 Row 2...BBIZE— 6— GA 2...1136 16...3/16 2...G4...
  • Page 13 Table 9 — Fitting Requirements UNIT ACCESS HOLE NO. CONNECTION TYPE CIRCUIT FITTING REQUIRED (in.) 1-1/8 Street Elbow Suction Lower 1-1/8 Nipple, 7-5/8 L 1-1/8 Long Radius Elbow 5/8 Street Elbow Liquid Lower 5/8 Nipple, 1-7/16 L 5/8 Long Radius Elbow 524J*14A 5/8 Street Elbow Liquid...

  • Page 14: Condensate Drain

    Condensate Drain Install a trapped condensate drain line to unit connection as shown in Fig. 10. The unit drain connection is a PVC stub. (See Fig. 11.) 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 15: Fan Motors And Drives

    Fan Motors and Drives Motor and drive packages are factory installed in all units. The motor and drive packages consist of the following items: 1 — fan motor 1 — adjustable motor pulley 1 — fan pulley 2 — matched fan belts (524J*14A-16A, 524J*16H units) For instructions on changing fan rotation, changing drive speeds and adjusting drives, see “Pulley and Drive Adjustment”...
  • Page 16 Table 10 — Electrical Data — Two Speed Motors VOLTAGE LIMITS FAN MOTOR POWER SUPPLY UNIT VOLTAGE TYPE MOCP 2.16 11.0 208/230 2.16 11.0 HIGH 2.76 10.8 14.0 2.16 524J*14A 2.16 HIGH 2.76 2.76 2.76 HIGH 3.73 10.0 2.76 10.8 14.0 208/230 2.76...

  • Page 17: Three Stage Operation

    Install disconnect switch and power wiring in accordance with all Move orange wire from Thermostat CB terminal Y2 to applicable local codes. See Fig. 12-13 and the unit label diagram. For terminal X. units with motor sizes less than 5 Hp (3.7 kW), connect power wiring Make connections of blue wire included in factory harness.
  • Page 18 NOTE: On select units, the black and blue IFM wires are reversed. Fig. 14 — Unit Wiring...

  • Page 19: Variable Frequency Drive

    IDCB This wire is included in factory harness TSTAT TSTAT CB COMP Disconnect this wire from TSTAT CB-X and insulate. Fig. 15 — 3-Stage Cooling Diagram 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.
  • Page 20 Fig. 17 — ACH550 Variable Frequency Drive (VFD) Variable Frequency Drive (VFD) Fig. 18 — ACS320 VFD Location for the following units: 524J*14-16A, 524J*16H (208/230V and 460V only)

  • Page 21: Connecting Ductwork

    Each fan discharge requires 2 flanges; each flange must be bent in the middle to conform to the dis- Refer to the Bryant System Design Manual for the recom- charge opening. (See Fig. 21.) After flanges are installed, con- mended design and layout of ductwork.

  • Page 22: Return-Air Filters

    Return-Air Filters a filter replacement tool (hook) is shipped inside the unit for field use when replacing filters. See the Service section for in- Type and size of filters are shown in Tables 1-4 and are structions on filter element replacement. factory-supplied and factory-installed.

  • Page 23: Start-Up

    START-UP Continue adjustment until superheat reaches 10°F to 15°F (5.5°C to 8.3°C). Before starting unit, check the following and correct as Replace the seal cap; tighten. necessary: • Is unit solidly supported? INSTALLER / INSTALLATEUR • Is fan adjusted for speed and pulley alignment? •...

  • Page 24: Operating Fan For Test And Balance

    main power leads. Restore unit power and recheck compressor UNITS WITH ELECTRO-MECHANICAL CONTROLS operation. The fan speed set up controls are located on the lower section Reset thermostat cooling set point to a position above the space of the Unit Control Board (UCB). (See Fig. 24.) temperature.

  • Page 25: Maintenance

    (or more often if local conditions and usage patterns dictate): a. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and opening hours. Consult your Bryant dealer AIR CONDITIONING about a service contact for seasonal inspections.

  • Page 26: Electrical Shock Hazard

    SERVICE Inspection and maintenance should be performed at regular in- tervals and should include the following: • Complete cleaning of cabinet, fan wheel, cooling coil, con- Locking densate pan and drain, heating coils, and return-air grille Wheel Bolt (if present). •...

  • Page 27: Fan Rotation

    Pulley(s) Belts Motor Pulley(s) Slot Mounting Bolts Fig. 27 — Fan Motor Mounting Fan Rotation Correct fan rotation with respect to fan outlet is shown in Adjustable Flanges Fig. 28. To reverse the direction of rotation of a 3-phase fan motor, re- Setscrews verse any 2 of the power leads.

  • Page 28: Pulley And Drive Adjustment

    Pulley and Drive Adjustment Table 17 — Motor Efficiency 524J***A — Two-Speed Motor To obtain desired fan speed, refer to the fan motor, drive data and performance data in Tables 15-34 and adjust fan motor MOTOR EFFICIENCY pulley as follows: MOTOR HP EPACT MINIMUM (%) Remove belt from fan motor pulley after loosening motor...
  • Page 29 Table 20 — Fan Motor Data, 524J***H Standard Motor, Table 24 — Fan Motor Data, 524J***H Alternate Motor, Two Speed — English Two Speed — SI UNIT 524J*16H UNIT 524J*16H 208/230-3-60 and 460-3-60 208/230-3-60 and 460-3-60 Speed (rpm) 1750 Speed (r/s) 29.25 Shaft kW 3.73...
  • Page 30 Table 27 — High-Static Drive Data, 60 Hz — English Table 29 — Medium-Static Drive Data, 60 Hz — SI UNIT 524J*14A 524J*16A/H UNIT 524J*14A 524J*16A/H MOTOR DRIVE MOTOR DRIVE Motor Pulley Pitch Diameter (in.) 3.7-4.7 4.3-5.3 Motor Pulley Pitch Diameter 86.4-111.8 94.0-119.4 (mm)
  • Page 31 Table 31 — Fan Performance Data — 524J, 0.0-1.2 in. wg ESP, 60 Hz — English a,b,c EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (Cfm) 3750 0.43 0.55 0.83 1.12 1.41 1.72 2.05 4300 0.62 0.74 1.05 1.38 1.70 2.04 2.39 524J*14A 5000...
  • Page 32 Table 33 — Fan Performance Data — 524J 0-300 Pa ESP, 60 Hz — SI a,b,c EXTERNAL STATIC PRESSURE (Pa) AIRFLOW UNIT (L/s) 1770 6.84 0.32 7.78 0.41 9.46 0.62 10.82 0.83 12.02 1.05 13.13 1.28 14.19 1.53 2030 7.58 0.46 8.40 0.55...

  • Page 33: Variable Frequency Drive

    Variable Frequency Drive Table 36 — ACH550 VFD Terminal Designations The VFD switches the indoor fan motor speed between full/ high speed (60 Hz motor operation) and reduced/low speed TERMINAL FUNCTION (40 Hz motor operation), as required by ASHRAE 90.1-2016 and IECC-2015 requirements for two-stage HVAC units.

  • Page 34: Alarms

    If diagnostics troubleshooting has determined that the drive is (FAULT RESET SELECT), digital input or serial communica- defective during the warranty period, contact Bryant. tion could also be used to reset the drive. When the fault has been corrected, the motor can be started.
  • Page 35 Internal fault. The thermistor measuring the internal temperature of the drive is open or shorted. Contact THERM FAIL Bryant. Internal fault. A communication-related problem has been detected between the OMIO and OINT boards. OPEX LINK Contact Bryant. OPEX PWR Internal fault. Low voltage condition detected on the OINT board. Contact Bryant.

  • Page 36: Vfd Maintenance

    VFD MAINTENANCE If installed in an appropriate environment, the VFD requires very little maintenance. Table 40 lists the routine maintenance intervals recommended Captive by Bryant. Screw Table 40 — Maintenance Intervals MAINTENANCE INTERVAL Every 6 to 12 months Heat sink temperature check...

  • Page 37: Bypass The Vfd

    Bypass the VFD Connect the ground wire from the indoor fan motor to the fan deck. Restore power. WARNING Condensate Drains Bypassing the VFD is not recommended. This is a Keep condensate drains free of dirt and foreign matter. temporary procedure to provide cooling or heating Return-Air Filters operation when a new VFD is required.

  • Page 38: Replacing Filters

    Replacing Filters Filters can be removed and installed from either side of the unit. Install new filters in units that have one fan as follows: Remove the side access panel (retain screws). Remove the filter retainer clip (see Fig. 36). Remove old filters by lifting and tilting them out of the filter track.

  • Page 39: Appendix A - Vfd Parameters

    APPENDIX A — VFD PARAMETERS Table A — ACS320 Common Parameters Table B — ACH550 VFD Common Parameters SETTING SETTING PARAMETERS DESCRIPTION PARAMETERS DESCRIPTION ACS320 ACH550 1001 EXT1 Commands 1001 EXT1 Commands 1102 EXT1/EXT2 Sel EXT1 1102 EXT1/EXT2 Sel EXT1 1103 REF1 Select AI-1...
  • Page 40 APPENDIX A — VFD PARAMETERS (cont) Table C — ACS320 VFD Parameters MOTOR CROSS MOTOR DRIVE VOLTAGE N. AMPS N. RPM N. HP MAX AMPS DESC. FREQ REFERENCE PARAMETERS PART NO. PART NO. (9905) (9906) (9908) (9909) (2003) ACS320 (Hz) EM_PKG (9907) 524J 3.7 HP...
  • Page 42 Printed in U.S.A. Form No: II524J-14-16-01 Rev. A © 2023 Carrier Cat. No. 04-53524004-01 Edition Date: 3-23 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: II524J-7-16-02...

  • Page 43: Indoor Unit

    START-UP CHECKLIST (SPLIT SYSTEMS WITH 524J UNITS) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up check- list, 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 44 CHECK VOLTAGE IMBALANCE LINE-TO-LINE VOLTS: AB_____________ V AC______________ V BC_____________ 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.

This manual is also suitable for:

524j 14 series524j-14a524j-16a524j-25a524j-16h524j-25h

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