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

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

Packaged air-handling units with puron r-410a refrigerant 60 hz
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5 24J *2 5 -3 0
Pa ckage d Ai r -Han d l i n g U n it s
wit h P u ron
( R- 41 0A) Re fr i g er ant
®
60 Hz
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Moving and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Uncrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Unit Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Refrigerant Piping Access . . . . . . . . . . . . . . . . . . . . . . . . . 12
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power Supply and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connecting Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adjusting TXV for Superheat . . . . . . . . . . . . . . . . . . . . . . 21
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fan Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Centering Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fan Shaft Position Adjustment . . . . . . . . . . . . . . . . . . . . . 22
Individual Fan Wheel Adjustment . . . . . . . . . . . . . . . . . . 23
Fan Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Fan Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Fan Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Pulley and Drive Adjustment . . . . . . . . . . . . . . . . . . . . . . 24
Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Coil Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Cleaning Cooling Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Cleaning Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Replacing Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
START-UP CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . .CL-1
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No.: 04-53524002-01
Installation, Start-up and
Service Instructions
Page
Printed in U.S.A.
Form No.: II524J-25-30-01 Rev. B

SAFETY CONSIDERATIONS

WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause in personal injury
or death.
Before performing service or maintenance operations on unit,
always turn off main power switch to unit and install lockout
tag. Unit may have more than one power switch.
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 local building codes and appropriate national
electrical codes (in USA, ANSI/NFPA70, National Electrical
Code (NEC); in Canada, CSA C22.1) for special requirements.
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 words
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
property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or
operation.
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause in personal injury,
death and/or equipment damage.
Puron
(R-410A) refrigerant systems operate at higher pres-
®
sures than standard R-22 systems. Do not use R-22 service
equipment or components on Puron refrigerant equipment.
Pg 1
DANGER, WARNING,
7-22
Replaces: II524J-07

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  • Page 1: Table Of Contents

    5 24J *2 5 -3 0 Pa ckage d Ai r -Han d l i n g U n it s wit h P u ron ( R- 41 0A) Re fr i g er ant ® 60 Hz Installation, Start-up and Service Instructions CONTENTS SAFETY CONSIDERATIONS...

  • Page 2: Pre-Installation

    Rigging Relieve pressure and recover all refrigerant before system All 524J Series units can be rigged by using the shipping skid. repair or final unit disposal. Units are shipped fully assembled. Do not remove shipping skids or protective covering until unit is ready for final place- Wear safety glasses and gloves when handling refrigerants.
  • Page 3 Fig. 1 — Dimensions — Size 25...
  • Page 4 Fig. 1 — Dimensions — Size 25 (cont)
  • Page 5 Fig. 2 — Dimensions — Size 28 and 30...
  • Page 6 Fig. 2 — Dimensions — Size 28 and 30 (cont)
  • Page 7 Table 1 — 524J***A Physical Data, English — Cooling Units UNIT 524J* NOMINAL CAPACITY (Tons) OPERATING WEIGHT (lb) Base Unit with TXV 1050 1062 Plenum FANS Qty...Diam. (in.) 2...15 2...18 2...18 Nominal Airflow (cfm) 8,000 10,000 12,000 Airflow Range (cfm) 6,000-10,000 7,500-12,500 9,000-15,000...
  • Page 8 Table 2 — 524J***A 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...457 2...457 Nominal Airflow (L/s) 3775 4119 5663 Airflow Range (L/s) 2831-4719 3539-5899 4247-7079 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60...
  • Page 9 Table 3 — 524J*25H 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) 8,000 Airflow Range (cfm) 6,000-10,000 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 575-3-60 Motor Speed (rpm)
  • Page 10 Table 4 — 524J*25H 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) 3775 Airflow Range (L/s) 2831-4719 Nominal Motor kW (Standard Motor) 208/230-3-60 and 460-3-60 3.73 575-3-60...

  • Page 11: Unit Positioning

    5 2 4 J E 2 5 A 0 0 0 A 2 0 A A A _____________ ____ Model Type Packaging 524J = Bryant Fan Coil A = Standard ® Puron R-410A Refrigerant Not Used A = Not Used...

  • Page 12: Unit Isolation

    Refrigerant Piping Access made before unit is placed in final position. The 524J Series units come with standard knockouts for refrig- The 524J direct-expansion units have internal factory-installed erant and chilled water piping. These knockouts are located on thermostatic expansion valves (TXVs), distributors, and noz- both sides of the unit for installation flexibility.
  • Page 13 TXV sensor bulb on a vertical portion of the suction line, The 524J Series evaporator coils have a face-split design. En- outside the unit. (See Fig. 8.) sure that lower circuit of coil is first on/last off when connected NOTE: Be sure to remove the styrofoam shipping pad from the to the condensing unit and/or system controls.
  • Page 14 Equalizer Line Upper Sensing Split Bulb Solenoid Valve Sight Glass Airflow 15 Diams Diams 8 Diams Equalizer Line Filter Drier Sensing Lower Bulb Split Airflow 15 Diams Diams 8 Diams Indoor Coil LEGEND TXV – Thermostatic Expansion Valve NOTE: Component location arrangement shown for field installation of sight glasses, solenoid valves, filter driers, and TXV sensing bulbs.
  • Page 15 Table 5 — Factory-Installed Nozzle and Distributor Data FEEDER TUBES PER DISTRIBUTOR QTY... UNIT COIL TYPE STD TXV QTY...PART NO. DISTRIBUTOR NOZZLE QTY...PART NO. PART NO. QTY...SIZE (IN.) 524J*25A 4 Row 2...BBIZE-8-GA 2...D196-18-3/16 18...3/16 2...G6 524J*28A 4 Row 2...BBIZE-15-GA 2...1126 20...3/16 2...C15 524J*30A...

  • Page 16: Condensate Drain

    Condensate Drain Install a trapped condensate drain line to unit connection as shown in Fig. The unit drain connection is a PVC stub. (See Fig. 12.) Some areas may require an adapter to connect to ei- ther galvanized steel or copper pipe. For these applications, in- stall a field-supplied threaded PVC adapter.

  • Page 17: Power Supply And Wiring

    Power Supply and Wiring Check the unit data plate to ensure that available power supply Fan Scroll matches electrical characteristics of the unit. Provide a discon- Contactor nect switch with an integrated lock-out feature of size required Motor to provide adequate fan motor starting current. See Tables 7-9 and Drive Wire for unit electrical data.
  • Page 18 Table 7 — Electrical Data, Standard Motors FAN MOTOR POWER SUPPLY MAXIMUM VOLTAGE FULL LOAD MINIMUM UNIT v-Ph-Hz a, b OVERCURRENT LIMITS Hp (kW) AMPS CIRCUIT AMPS PROTECTION (FLA) (MCA) (MOCP) 208/230-3-60 187-253 5.0 (3.73) 14.7/13.6 18.4/17.0 30/25 524J*25A 460-3-60 414-506 5.0 (3.73) 424J*25H...

  • Page 19: Connecting Ductwork

    Connecting Ductwork discharge opening. (See Fig. 18.) After flanges are installed, Refer to the Bryant System Design Manual for the recom- connect them to the supply duct using a canvas connection to mended design and layout of ductwork. Figure 17 shows rec- prevent vibration.
  • Page 20 Fig. 17 — Typical Fan Discharge Connections for Multiple Fan Units Duct Flanges Fig. 18 — Duct Flange Installation...

  • Page 21: Start-Up

    START-UP To increase superheat, turn the stem clockwise. To decrease the superheat, turn the stem counterclockwise. Do not turn the Before starting unit, check the following and correct as necessary: stem more than one full turn. • Is unit solidly supported? Wait until suction pressure and superheat stabilize.

  • Page 22: Fan Motor Lubrication

    Fan Motor Lubrication Centering Fan Wheel Fan motor supplied with unit is permanently lubricated and re- If fan and fan shaft assembly are not properly centered, blades quires no further lubrication. may scrape against the blower side scroll plate or may create an objectionable whistling noise.

  • Page 23: Individual Fan Wheel Adjustment

    Pulley(s) Belts Motor Pulley(s) Slot Mounting Bolts Fig. 23 — Fan Motor Mounting Individual Fan Wheel Adjustment To reverse the direction of rotation of a 3-phase fan motor, reverse any 2 of the power leads. Refer to the connection Loosen the 2 locking bolts holding the fan wheel hub to shaft. diagram on the inside of motor terminal box cover for proper (See Fig.

  • Page 24: Pulley And Drive Adjustment

    If pulleys are not in correct alignment, loosen the motor hold- Remove the filter retainer clip (see Fig. 26). down bolts and slide the motor axially until the pulleys are Remove old filters by lifting and tilting them out of the filter aligned.
  • Page 25 Table 11 — Fan Motor Data, Standard Motor — English 524J*25A UNIT 524J*28A 524J*30A 524J*25H 208/23-3-60 and 460-3-60 Speed (rpm) 1745 1745 1745 10.0 Frame (NEMA) S184T S213T S215T Shaft Dia (in.) 1-1/8 1-3/8 1-3/8 575-3-60 Speed (rpm) 1745 1745 1745 10.0 Frame (NEMA)
  • Page 26 Table 15 — Standard Drive Data, 60 Hz — English 524J*25A UNIT 524J*28A 524J*30A 524J*25H MOTOR DRIVE Motor Pulley Pitch Diameter (in.) 3.7-4.7 4.3-5.3 4.3-5.3 Pulley Factory Setting Full Turns Open FAN DRIVE Pulley Pitch Dia (in.) 11.0 11.0 Pulley Bore (in.) 1-7/16 1-15/16 1-15/16...
  • Page 27 Table 17 — High-Static Drive Data, 60 Hz — English 524J*25A UNIT 524J*28A 524J*30A 524J*25H MOTOR DRIVE Motor Pulley Pitch Diameter (in.) 4.3-5.3 4.3-5.3 4.3-5.3 Pulley Factory Setting Full Turns Open FAN DRIVE Pulley Pitch Dia (in.) Pulley Bore (in.) 1-7/16 1-15/16 1-15/16...
  • Page 28 Table 19 — Medium-Static Drive Data, 60 Hz — SI 524J*25A UNIT 524J*28A 524J*30A 524J*25H MOTOR DRIVE Motor Pulley Pitch Diameter 109.2-134.6 109.2-134.6 109.2-134.6 (mm) Pulley Factory Setting Full Turns Open FAN DRIVE Pulley Pitch Dia (mm) Pulley Bore (mm) 36.5 49.2 49.2...
  • Page 29 Table 21 — 524J Standard Fan Performance Data — 0.0-2.4 in. wg External Static Pressure — English EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (cfm) 6,000 1.25 1.39 1.69 2.06 2.48 2.93 3.60 7,000 1.93 2.09 2.42 2.08 3.23 3.71 4.23 524J*25A 8,000...
  • Page 30 Table 22 — 524J Standard Fan Performance Data — 0-600 kPa External Static Pressure — SI EXTERNAL STATIC PRESSURE (kPa) AIRFLOW UNIT (L/s) 2830 8.86 0.94 9.48 1.04 10.65 1.26 11.84 1.53 13.01 1.85 14.10 2.19 15.08 2.53 3300 10.14 1.44 10.69 1.56 11.70...
  • Page 31 Table 23 — 524J High-Capacity Fan Performance Data — 0.0-2.4 in. wg External Static Pressure — English EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW UNIT (cfm) 6,000 1.29 1042 1.72 2.09 2.51 2.95 3.40 7,000 1.99 2.15 2.48 2.85 3.28 3.76 4.27 524J*25A 524J*25H...
  • Page 32 Table 24 — 524J High-Capacity Fan Performance Data — 0-600 kPa External Static Pressure — SI EXTERNAL STATIC PRESSURE (kPa) AIRFLOW UNIT (L/s) 2830 9.03 0.96 9.62 1.06 10.77 1.29 11.94 1.56 13.08 1087 14.15 2.20 15.12 2.54 3330 10.34 1.48 10.86 1.60...
  • Page 34 Printed in U.S.A. Form No.: II524J-25-30-01 Rev. B © 2022 Carrier Cat. No. 04-53524002-01 Edition Date: 7-22 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces:II524J-07...

  • Page 35: Start-Up Checklist

    Start-up Checklist (SPLIT SYSTEMS WITH 524J UNITS) NOTE: To avoid injury to personnel and damage to equipment or prop- erty when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety con- siderations/information as outlined in preceding sections of this Installation, Start-Up, and Service document.
  • Page 36 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 (MAXIMUM DEVIATION)/(AVERAGE VOLTAGE) =______________ IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM! CALL LOCAL POWER COMPANY FOR ASSISTANCE.

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