Bryant Preferred Series Service And Maintenance Instructions
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Bryant Preferred Series Service And Maintenance Instructions

Gas heat/electric cooling with puron (r-410a) refrigerant
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Preferred Series™
581J*17-28
Gas Heat/Electric Cooling
with Puron
(R-410A) Refrigerant
®
Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . .1
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . . .2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Routine Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . . .4
Supply Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
DRIVE (VFD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Two-Speed Indoor Fan Motor System. . . . . . . . . . . . . . . . .5
Identifying Factory Option . . . . . . . . . . . . . . . . . . . . . . . . . .6
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .6
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Replacing the Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
CONDENSER COIL SERVICE . . . . . . . . . . . . . . . . . . . . .7
EVAPORATOR COILS . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Evaporator Coil Metering Devices. . . . . . . . . . . . . . . . . . . .9
Refrigerant System Pressure Access Ports . . . . . . . . . . . . .9
TION SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Perfect Humidity Modes . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Perfect Humidity System Components . . . . . . . . . . . . . . .10
Subcooler/Reheat Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Operating Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Replacing TXV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
PURON® (R-410A) REFRIGERANT. . . . . . . . . . . . . . . .16
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
COOLING CHARGING CHARTS. . . . . . . . . . . . . . . . . .18
COMPRESSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Replacing the Compressor . . . . . . . . . . . . . . . . . . . . . . . . .22
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Adjusting the Condenser-Fan. . . . . . . . . . . . . . . . . . . . . . .22
Troubleshooting Cooling System . . . . . . . . . . . . . . . . . . . .22
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . . .24
Non-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Unit-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Wet in Use Convenience Outlet Cover. . . . . . . . . . . . . . . .24
Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
GFCI Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53581021-01
Printed in U.S.A.
Form SM581J-17-28-02
Fuse On Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Using Unit-Mounted Convenience Outlets . . . . . . . . . . . . 25
Installing a Weatherproof Cover . . . . . . . . . . . . . . . . . . . . 25
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . . . . . . 26
Sensor and Controller Tests . . . . . . . . . . . . . . . . . . . . . . . . 29
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Normal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Alarm State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . 31
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Supply (Indoor) Fan Motor Protection . . . . . . . . . . . . . . . 31
Control Circuit, 24-v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
RTU-OPEN CONTROL SYSTEM . . . . . . . . . . . . . . . . . . 32
GAS HEATING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . 32
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Fuel Types and Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Flue Gas Passageways. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Combustion-Air Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Burners and Igniters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
ECONOMI$ER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . 44
EconoMi$er IV Standard Sensors . . . . . . . . . . . . . . . . . . . 48
EconoMi$er® X (Factory Option). . . . . . . . . . . . . . . . . . . 54
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . . . . . . 67
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Additional Installation/Inspection . . . . . . . . . . . . . . . . . . . 67
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . . . 69
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
APPENDIX B - PHYSICAL DATA . . . . . . . . . . . . . . . . 71
APPENDIX C - FAN PERFORMANCE . . . . . . . . . . . . 75
APPENDIX D - WIRING DIAGRAMS . . . . . . . . . . . . . 83
LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
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 litera-
Pg 1
12-19
Replaces: SM581J-17-28-01

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Summary of Contents for Bryant Preferred Series

  • Page 1: Table Of Contents

    Preferred Series™ 581J*17-28 Gas Heat/Electric Cooling with Puron (R-410A) Refrigerant ® Service and Maintenance Instructions CONTENTS Fuse On Powered Type ......25 Using Unit-Mounted Convenience Outlets .

  • Page 2: Unit Arrangement And Access

    ture, tags and labels attached to the unit, and other safety precau- tions that may apply. IMPORTANT: Pressing the controller’s test/reset switch for Follow all safety codes, including ANSI (American National Stan- longer than seven seconds will put the duct detector into the dards Institute) Z223.1.

  • Page 3: Routine Maintenance

    • Gas burner condition • Gas manifold pressure • Heating temperature rise Economizer or Outside Air Damper • Inlet filters condition • Check damper travel (economizer) • Check gear and dampers for debris and dirt Air Filters and Screens Each unit is equipped with return air filters. If the unit has an econ- omizer, it will also have an outside air screen.

  • Page 4: Supply Fan (Blower) Section

    17 1/4” V-BELT DIVIDER OUTSIDE MOTOR HOOD CLEANABLE ALUMINUM FILTER FILTER MOTOR ADJUSTMENT BOLTS (4) BAROMETRIC RELIEF JACKBOLT LOCKING NUT (2) FILTER MOTOR MOUNTING PLATE CLIP JACKBOLT (2) Fig. 3 — Inlet Air Screen Installation Fig. 4 — Belt Drive Motor Mounting SUPPLY FAN (BLOWER) SECTION STRAIGHTEDGE CAUTION...

  • Page 5: Two-Speed Indoor Fan Motor System

    REPLACING THE V-BELT Tighten fan pulley setscrews and motor mounting bolts to torque specifications. Use a belt with same section type or similar size. Do not Recheck belt tension. See Fig. 5. substitute a “FHP” or “notched” type V-belt. Loosen (turn counterclockwise) the motor mounting plate front bolts and rear bolts.

  • Page 6: Identifying Factory Option

    Identifying Factory Option This section only applies to units that meet the criteria detailed BLOWER PULLEY in Table 1. If the unit does not meet that criteria, disregard this V-BELT section. MOTOR PULLEY MOTOR Table 1 — Model Size/VFD Option Indicator POSITION IN VFD FIOP MODEL/SIZES...

  • Page 7: Changing Fan Wheel Speed By Changing Pulleys

    21. Do not tighten the mounting bolts at this time. To reduce vibration, replace the motor’s adjustable pitch pulley 22. Set new motor and motor mounting bracket back onto the with a fixed pitch pulley (after the final airflow balance adjust- unit.

  • Page 8: Evaporator Coils

    coil. Failure to clean the coils can result in reduced durability in EVAPORATOR COILS the environment. Evaporator Coil Avoid use of: The evaporator coil uses the traditional round-tube, plate-fin • coil brighteners (RTPF) technology. Tube and fin construction consists of vari- •...

  • Page 9: Evaporator Coil Metering Devices

    10. Finned surfaces should remain wet with cleaning solution for 10 minutes. CAUTION 11. Ensure surfaces are not allowed to dry before rinsing. Reapply cleaner as needed to ensure 10 minute saturation UNIT DAMAGE HAZARD is achieved. Failure to follow this caution may result in accelerated 12.

  • Page 10: Perfect Humidity Adaptive Dehumidifica

    SEAT CORE (Part No. EC39EZ067) 1/2-20 UNF RH 0.596 45° 30° WASHER DEPRESSOR PER AHRI 720 1/2” HEX O-RING +.01/-.035 5/8” HEX 0.47 FROM FACE OF BODY 7/16-20 UNF RH This surface provides a metal to metal seal when torqued into the seat. Appropriate handling is required to not scratch or dent the surface.

  • Page 11: Subcooler/Reheat Coil

    Subcooler/Reheat Coil The Subcooler/Reheat Coil is mounted across the leaving face of the unit’s evaporator coil. The coil is a one-row design with two separate circuits. Operating Sequences The Perfect Humidity system provides three sub-modes of opera- tion: Normal Cooling (see Fig. 15), Subcooling Reheat1 (see RH1.B Fig.
  • Page 12 RH2.x VALVE RH1.x VALVE PERFECT HUMIDITY CONDENSER COIL COIL OUTDOOR AIR COMPRESSOR VALVE EVAPORATOR COIL = CLOSED VALVE INDOOR AIR = OPEN VALVE = 3-WAY VALVE Fig. 16 — Subcooling Mode (Reheat 1) – Perfect Humidity System RH2.x VALVE RH1.x VALVE PERFECT HUMIDITY CONDENSER COIL...
  • Page 13 Table 2 — Perfect Humidity Reheat Control Board I/O POINT NAME TYPE CONNECTION PIN NUMBER UNIT CONNECTION NOTE Humidistat/LTLO DI, 24VAC J1A-1 (1) LTLO Thermostat W1 DI, 24VAC J1A-2 (2) CTB-REHEAT-4 Econ Y1 DI, 24VAC J1A-6 (6) CTB-REHEAT-5 Thermostat G DI, 24VAC J1B-1 (7) CTB-REHEAT-1...
  • Page 14 Table 4 — Perfect Humidity Troubleshooting (cont) PROBLEM CAUSE REMEDY Relative humidity setpoint is too low — Check/reduce setting on accessory humidistat. Humidistat Check Space RH Setpoints (SetpointsRH.SP and Relative humidity setpoint is too low — RH RH.UN) and occupancy using ComfortLink Scrolling sensor.

  • Page 15: Thermostatic Expansion Valve (Txv)

    THERMOSTATIC EXPANSION VALVE (TXV) TXV Operation The TXV is a metering device that is used in air conditioning and All 581J units have factory-installed nonadjustable thermostatic heat pump systems to adjust to the changing load conditions by expansion valves (TXV). The TXVs are bleed port expansion maintaining a preset superheat temperature at the outlet of the valves with an external equalizer.

  • Page 16: Replacing Txv

    Replacing TXV Refrigerant System Pressure Access Ports There are two access ports in the system - on the suction tube near the compressor and on the discharge tube near the compressor. CAUTION These are brass fittings with black plastic caps. The hose connec- tion fittings are standard -in.
  • Page 17 LOW-CHARGE COOLING Circuit B Outdoor Temperature ......85°F (29°C) Using Cooling Charging Charts (Fig. 21-24), vary refrigerant until the conditions of the appropriate chart are met.

  • Page 18: Cooling Charging Charts

    COOLING CHARGING CHARTS Fig. 21 — Cooling Charging Chart - 15 Ton...
  • Page 19 Fig. 22 — Cooling Charging Chart - 17.5 Ton...
  • Page 20 Fig. 23 — Cooling Charging Chart - 20 Ton...
  • Page 21 Fig. 24 — Cooling Charging Chart - 25 Ton...

  • Page 22: Compressors

    COMPRESSORS COMPRESSOR ROTATION On 3-phase units with scroll compressors, it is important to be cer- Lubrication tain compressor is rotating in the proper direction. To determine Compressors are charged with the correct amount of oil at the whether the compressor is rotating in the proper direction: factory.
  • Page 23 Table 5 — Cooling Service Troubleshooting PROBLEM CAUSE REMEDY Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, Replace defective component. Compressor and Condenser Fan Will or control relay. Not Start Insufficient line voltage.

  • Page 24: Convenience Outlets

    CONVENIENCE OUTLETS above 8 amps (i.e., limit loads exceeding 8 amps to 30 minutes of operation every hour). The primary leads to the convenience outlet transformer are not factory-connected. Selection of primary power source is a custom- WARNING er option. If local codes permit, the transformer primary leads can ELECTRICAL OPERATION HAZARD be connected at the line-side terminals on a unit-mounted non- fused disconnect or circuit-breaker switch.

  • Page 25: Fuse On Powered Type

    Repair ground wire connections as needed and correct line GFCI RECEPTACLE phasing. NOT INCLUDED COVER - WHILE-IN-USE Press the RESET button to clear the tripped condition. WEATHERPROOF Fuse On Powered Type The factory fuse is a Bussmann “Fusetron” T-15, non-renewable screw-in (Edison base) type plug fuse.

  • Page 26: Sensor

    Duct smoke sensor Duct smoke sensor controller Exhaust tube Conduit nuts Exhaust gasket (supplied by installer) Sensor housing and electronics Detail A Conduit support plate Terminal block cover Intake Controller housing Cover gasket gasket Cover gasket and electronics (ordering option) (ordering option) Controller cover Conduit couplings...
  • Page 27 SUPPLY-AIR SMOKE DETECTOR SENSOR SUPPLY-AIR SMOKE DETECTOR SENSOR RETURN-AIR SMOKE DETECTOR SENSOR Fig. 32 — Typical Return-Air Smoke Detector Location (without Economizer) RETURN AIR WITH ECONOMIZER The sampling tube is inserted through the side plates of the econo- mizer housing, placing it across the return air opening on the unit basepan.

  • Page 28: Fiop Smoke Detector Wiring And Response

    HIGHLIGHT A JMP 3 is factory-cut, transferring unit control to smoke detector. HIGHLIGHT B Smoke detector NC contact set will open on smoke alarm condi- tion, de-energizing the ORN conductor. HIGHLIGHT C 24-v power signal using the ORN lead is removed at Smoke De- tector input on Central Terminal board (CTB);...

  • Page 29: Sensor And Controller Tests

    Sensor and Controller Tests IMPORTANT: Failure to follow this NOTICE may result in SENSOR ALARM TEST an unnecessary evacuation of the facility. The sensor alarm test checks a sensor’s ability to signal an alarm Holding the test magnet against the sensor housing for state.

  • Page 30: Detector Cleaning

    Squeeze the retainer clips on both sides of the optic hous- ing then lift the housing away from the printed circuit board. Gently remove dirt and debris from around the optic plate SMOKE DETECTOR CONTROLLER and inside the optic housing. Replace the optic housing and sensor cover.

  • Page 31: Troubleshooting

    Table 7 — Detector Indicators CONTROL OR INDICATOR DESCRIPTION Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in the Magnetic test/reset switch normal state. Alarm LED Indicates the sensor is in the alarm state. Trouble LED Indicates the sensor is in the trouble state.

  • Page 32: Control Circuit, 24-V

    primary tubes. The tubes exit into the collector box, the into the in- Table 8 — Overcurrent Device Type duced draft fan wheel inlet. The induced fan wheel discharges into a flue passage and flue gases exit out a flue hood on the side of the MOTOR SIZE (bhp) OVERLOAD DEVICE RESET...

  • Page 33: Flue Gas Passageways

    Gas line pressure entering the unit’s main gas valve must be within specified ranges. See Table 9. Adjust unit gas regulator valve as required or consult local gas utility. GAS VALVE Manifold pressure is factory-adjusted for NG fuel use. Adjust as required to obtain best flame characteristic.

  • Page 34: Burners And Igniters

    HEATER TUBE ASSEMBLY SEAL STRIPS (SPONGE RUBBER) REGULATOR GASKET REGULATOR RETAINER WIND CAP ASSEMBLY (SHOWN INVERTED AS SHIPPED) MOUNTING SCREWS (2) SUPPORT INSULATION ASSEMBLY VESTIBULE PLATE INDUCER FAN MOTOR ASSEMBLY BURNER ASSEMBLY GAS VALVE Fig. 43 — Typical Heat Exchanger Assembly Burners and Igniters ORIFICE CAUTION...
  • Page 35 Remove igniter wires and sensor wires at the Integrated Gas Unit Controller (IGC). See Fig. 47. Remove the 2 screws that attach the burner rack to the ves- tibule plate. See Fig. 45. Slide the burner tray out of the unit. See Fig. 46. To reinstall, reverse the procedure outlined above.
  • Page 36 Board Board Side view Front view Fig. 47 — Unit Control Box/IGC Location...

  • Page 37: Gas Valve

    Gas Valve 12. Turn off unit, close manual gas shut off valve, remove pressure manometer and replace the -in. pipe fitting on All unit sizes are equipped with 2-stage gas valves. See Fig. 48 for the gas manifold. See Fig. 46. locations of adjustment screws and features on the gas valves.
  • Page 38 IGNITER AND SENSOR LOCATIONS (BRACKET HEAT COVER NOT SHOWN FOR CLARITY 9 CELL 50HE400026 0.12 - 0.14” 0.18” (4.60 mm) (3.05 - 3.56 mm) SPARK GAP NOTE: SPARK GAP MUST BE AT THE BOTTOM OF THE BURNER. Fig. 49 — Typical MRT Spark Adjustment Table 14 —...
  • Page 39 RED LED - STATUS Fig. 50 — Integrated Gas Control (IGC) Board...
  • Page 40 Fig. 51 — Typical IGC Wiring Diagram Table 15 — IGC Connections CONNECTION TERMINAL LABEL POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O PIN NUMBER INPUTS RT, C Input power from TRAN 1 control box 24 vac — Speed sensor gas section analog input J1, 1-3 FS, T1...
  • Page 41 Table 16 — Altitude Compensation* (17-30) for Natural Gas NATURAL GAS NOMINAL HEAT INPUT ELEVATION 220k BTUH 310k BTUH 400k BTUH Feet Meters Orifice Size Input (btu/hr) Orifice Size Input (btu/hr) Orifice Size Input (btu/hr) 0-2000 0-610 220,000 310,000 400,000 2000 202,400 285,200...
  • Page 42 MINIMUM HEATING ENTERING AIR TEMPERATURE Thermostat When operating on first stage heating, the minimum temperature of air entering the dimpled heat exchanger is 50°F (10°C) continu- ous and 45°F (7°C) intermittent for standard heat exchangers and 40°F (4°C) continuous and 35°F (2°C) intermittent for stainless OALT steel heat exchangers.
  • Page 43 Table 19 — IGC Board LED Alarm Codes ACTION TAKEN FLASH DESCRIPTION RESET METHOD PROBABLE CAUSE BY CONTROL CODE Normal Operation — — — Loss of power to the IGC. Check 5 amp fuse on IGC, Hardware Failure No gas heating. —...

  • Page 44: Economi$Er Systems

    ECONOMI$ER SYSTEMS WIRING HARNESS IMPORTANT: Any economizer that meets the economizer OUTSIDE AIR requirements as laid out in California’s Title 24 mandatory TEMPERATURE SENSOR section 120.2 (fault detection and diagnostics) and/or pre- scriptive section 140.4 (life-cycle tests, damper leakage, 5 year warranty, sensor accuracy, etc), will have a label on the economizer.
  • Page 45 Fig. 56 — RTU Open Overlay for Economizer Wiring...
  • Page 46 Fig. 57 — VFD Overlay for W2770 Controller Wiring...
  • Page 47 FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK LEGEND Potentiometer Defaults Settings: Power Exhaust Middle — Demand Controlled Ventilation Minimum Pos. Fully Closed DCV Max. Middle — Indoor Air Quality DCV Set Middle — Low Ambient Lockout Device Enthalpy C Setting NOTES: —...

  • Page 48: Economi$Er Iv Standard Sensors

    The operating range of temperature measurement is 0°F to jumper positions are also shown. An EconoMi$er IV simulator 158°F (–18°C to 70°C). program is available from Bryant to help with EconoMi$er IV The temperature sensor looks like an eyelet terminal with wires training and troubleshooting.
  • Page 49 SUPPLY Table 21 — EconoMi$er IV Sensor Usage AIR TEMPERATURE SENSOR MOUNTING ECONOMI$ER IV WITH OUTDOOR-AIR LOCATION DRY BULB SENSOR APPLICATION Accessories Required Outdoor Air None. The outdoor air dry bulb sensor Dry Bulb is factory installed. SUPPLY AIR Differential CRTEMPSN002A00* TEMPERATURE Dry Bulb...
  • Page 50 (29) (32) (35) (38) (41) (43) CONTROL CONTROL POINT CURVE APPROX. deg. F (deg. C) AT 50% RH (27) 73 (23) 70 (21) 67 (19) 63 (17) (24) (21) (18) (16) 0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50 (13) STATIC PRESSURE (in.
  • Page 51 control, turn the enthalpy setpoint potentiometer fully clockwise to the building. Make minimum position adjustments with at least the D setting. 10°F temperature difference between the outdoor and return-air temperatures. INDOOR AIR QUALITY (IAQ) SENSOR INPUT To determine the minimum position setting, perform the following The IAQ input can be used for demand controlled ventilation con- procedure: trol based on the level of CO...
  • Page 52 Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position. Use setting 1 or 2 for Bryant equipment. See Table 22. The same equation can be used to determine the occupied or max- Press Clear and Mode buttons. Hold at least 5 seconds imum ventilation rate to the building.
  • Page 53 The custom settings of the CO sensor can be changed anytime af- Set the enthalpy potentiometer to D (fully CW). The Free ter the sensor is energized. Follow the steps below to change the Cool LED should turn off. non-standard settings: Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

  • Page 54: Economi$Er® X (Factory Option)

    Disconnect power at TR and TR1. Sensor (optional) Set enthalpy potentiometer to previous setting. The CO sensor can be added for Demand Controlled Ventilation Set DCV maximum position potentiometer to previous (DCV). setting. SPECIFICATIONS Set minimum position, DCV setpoint, and exhaust potenti- ometers to previous settings.
  • Page 55 Exhaust fan, Y1, Y2 and AUX1 O Table 23 — Economizer Module All Relay Outputs (at 30 vac): (Left Hand Terminal Blocks) Running: 1.5A maximum LABEL TYPE DESCRIPTION Inrush: 7.5A maximum Top Left Terminal Block ENVIRONMENTAL 20k NTC Mixed Air Temperature Sensor (Polarity Operating Temperature and COM Insensitive Connection)
  • Page 56 SENSOR (HOT) BLACK YELLOW ANALOG BROWN – ORANGE GREEN POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION Switch AS REQUIRED. Label Fig. 73 — CO Sensor Wiring INTERFACE OVERVIEW This section describes how to use the EconoMi$er ® X user inter- Switches face for: •...
  • Page 57 Press the ▲ button to increase (change) the displayed • ALARMS parameter value. NOTE: Some parameters in the menus use the letters MA or Press the ▼ button to decrease (change) the displayed MAT, indicating a mixed air temperature sensor location before parameter value.
  • Page 58 Table 27 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † RETURN AIR TEMPERATURE Displays measured value of return air temperature from RAT _ _ . _ °F 0°F to 140°F RA TEMP Sylk Bus sensor.
  • Page 59 Table 27 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † DCV MAXIMUM DAMPER POSITION Displays only if a CO sensor is connected. 2 to 10 vdc Used for Vbz (ventilation max cfm) set point. VENTMAX is the same setting as MIN POS would be if unit did not have CO sensor.
  • Page 60 Table 27 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † FREEZE PROTECTION DAMPER POSITION FREEZE POS CLO or MIN Damper position when freeze protection is active (closed or MIN POS).
  • Page 61 Table 27 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † SENSOR ERROR sensor has failed, gone out of range or become CO2 SENS ERR disconnected - check wiring then replace sensor if the alarm continues.
  • Page 62 Table 28 — Damper Minimum Position Settings and Readings on Checkout Menu DEMAND CONTROLLED VENTILATION FAN SPEED SETPOINTS CHECKOUT SENSOR) MIN POS VMAX–HS MIN POS H VMAX–HS MIN POS L VMAX–LS VENT MIN VMAX–HS VENT MAX VMAX–HS VENT MIN H VMAX–HS VENT MAX H VMAX–LS...
  • Page 63 Table 31 — Enthalpy Operation without DCV (CO Sensor) — 1 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED VENTILATION (DCV) ECONOMIZE High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed High 24-v/On...
  • Page 64 Table 34 — Dry Bulb Operation with DCV (CO Sensor) — 2 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE 0v/Off 0v/Off VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed...
  • Page 65 Table 36 — Enthalpy Operation with DCV (CO Sensor) — 2 Speed Fan DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I Y1-O Y2-O OCCUPIED UNOCCUPIED SPEED VENTILATION (DCV) ECONOMIZE 0v/Off 0v/Off VENTMIN Closed 24v/On 0v/Off VENTMIN Closed HIGH 24v/On 24v/On VENTMIN Closed 0v/Off...
  • Page 66 ECONOMIZING DUAL ENTHALPY AVAILABLE HIGH LIMIT NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) (T,RH) TEMPERATURE Fig. 75 — Single Enthalpy Curve Boundaries Table 38 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY...

  • Page 67: Pre-Start-Up/Start-Up

    You can also navigate to the Alarms menu at any time. Proceed as follows to inspect and prepare the unit for initial start- Clearing Alarms Once the alarm has been identified and the cause has been re- Remove all access panels. moved (e.g.
  • Page 68 COMPRESSOR MOUNTING Compressors are internally spring mounted. Do not loosen or re- WARNING move compressor hold down bolts. FIRE, EXPLOSION HAZARD INTERNAL WIRING Failure to follow this warning could result in death, serious Check all electrical connections in unit control boxes. Tighten as personal injury and/or property damage.

  • Page 69: Fastener Torque Values

    After a call for heating, the main burners should light To shut off unit, set system selector switch at OFF position. Re- within 5 seconds. If the burner does not light, then there is setting heating selector lever below room temperature will tem- a 22 second delay before another 5 second try.

  • Page 70: Appendix A - Model Number

    S = Cu/Cu – Cu/Cu – Louvered Hail Guards *Units equipped with Perfect Humidity System include Motormaster controls. Not all possible options can be displayed above - see price pages or contact your Bryant Sales representative for more details Fig. A — Model Number Nomenclature...

  • Page 71: Appendix B - Physical Data

    APPENDIX B — PHYSICAL DATA Table A — PHYSICAL DATA (Cooling) 15 to 17.5 Tons 581J*17D/F 581J*17K/M 581J*20D/F 581J*20K/M Refrigeration System # Circuits/# Comp./Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll R-410A charge A/B (lbs) 17/16.4 24.5/25.7...
  • Page 72 APPENDIX B — PHYSICAL DATA Table A — PHYSICAL DATA (Cooling) 15 to 17.5 Tons (cont) 581J*17D/F 581J*17K/M 581J*20D/F 581J*20K/M HORIZONTAL Motor qty/Belt qty/Driver type 1 / 1 /Belt 1 / 1 /Belt 1 / 1 /Belt 1 / 1 /Belt Nominal nameplate H.P.
  • Page 73 APPENDIX B — PHYSICAL DATA Table B — PHYSICAL DATA (Cooling) 20 to 25 Tons 581J*24D/F 581J*24K/M 581J*28D/F 581J*28K/M Refrigeration System # Circuits/# Comp./Type 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll 2 / 2 / Scroll R-410A charge A/B (lbs) 23.8/23.1 30.0/30.7...
  • Page 74 APPENDIX B — PHYSICAL DATA Table B — PHYSICAL DATA (Cooling) 20 to 25 Tons (cont) 581J*24D/F 581J*24K/M 581J*28D/F 581J*28K/M HORIZONTAL Motor qty/Belt qty/Driver type 1 / 1 /Belt 1 / 1 /Belt — — Nominal nameplate H.P. — — Max BHP 6.5/ 6.9/ 7.0/ 8.3 6.5/ 6.9/ 7.0/ 8.3...

  • Page 75: Appendix C - Fan Performance

    APPENDIX C — FAN PERFORMANCE Table C — 581J 17 Horizontal Supply (15 Ton) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 1.25 1.76 2.31 2.89 3.51 4500 1.51 2.05 2.64 3.26 3.91 4900 1.78 2.35 2.96 3.61 4.29 5250 2.13 2.73 3.37 4.05 4.76...
  • Page 76 APPENDIX C — FAN PERFORMANCE Table E — 581J 20 Horizontal Supply (17.5 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 1.78 2.35 2.96 3.61 4.29 5250 2.17 2.78 3.43 4.11 4.82 5700 2.63 3.27 3.95 4.67 5.42 6150 3.09 3.76 4.48 5.23 6.01...
  • Page 77 APPENDIX C — FAN PERFORMANCE Table F — 581J 20 Vertical Supply (17.5 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 1.10 1.45 1.84 2.24 2.67 5250 1.35 1.72 2.12 2.55 3.00 5700 1.63 2.02 2.44 2.90 3.37 6150 1.92 2.32 2.77 3.24 3.73...
  • Page 78 APPENDIX C — FAN PERFORMANCE Table G — 581J 24 Horizontal Supply (20 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 1.92 2.44 2.98 3.53 4.10 6000 2.34 2.90 3.48 4.07 4.67 6500 2.83 3.43 4.05 4.67 5.31 7000 3.39 4.03 4.68 5.35 6.03...
  • Page 79 APPENDIX C — FAN PERFORMANCE Table H — 581J 24 Vertical Supply (20 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 1.25 1.56 1.89 2.22 2.57 6000 1.52 1.87 2.21 2.57 2.94 6500 1.85 2.21 2.58 2.96 3.35 7000 2.21 2.60 3.00 3.40 3.81...
  • Page 80 APPENDIX C — FAN PERFORMANCE Table I — 581J 28 Horizontal Supply (25 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 7500 3.39 4.03 4.68 5.35 6.03 8000 4.02 4.70 5.39 6.10 6.81 8500 4.73 5.45 6.18 6.93 1034 7.68 9000 5.52 6.28 7.06...
  • Page 81 APPENDIX C — FAN PERFORMANCE Table J — 581J 28 Vertical Supply (25 Tons) AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG) 7500 2.21 2.60 3.00 3.40 3.81 8150 2.76 3.19 3.61 4.05 1003 4.49 8750 3.35 3.80 4.26 4.73 1042 5.19 9400 4.08 4.57...
  • Page 82 Bryant recommends the lower horsepower option. For information on the electrical properties of Bryant motors, please see the Electrical information section of this book. For more information on the performance limits of Bryant motors, see the application data section of this book.

  • Page 83: Appendix D - Wiring Diagrams

    APPENDIX D — WIRING DIAGRAMS Table M — Wiring Diagrams 581J*17-28 UNITS DUAL CIRCUIT PERFECT HUMIDITY SIZE VOLTAGE CONTROL POWER CONTROL POWER 208/230-3-60 50HE500889-L (page 85) 50HE502186-D (page 89) 460-3-60 50HE500752-L (page 86) 50HE502183-F (page 90) 575-3-60 50HE500888-L (page 87) 50HE502184-F (page 91) 208/230-3-60 50HE500889-L (page 85)
  • Page 84 APPENDIX D — WIRING DIAGRAMS Fig. B — 581J*17-28 Control Diagram — 208/230-3-60; 460/575-3-60...
  • Page 85 APPENDIX D — WIRING DIAGRAMS Fig. C — 581J*17-28 Power Diagram - 208/230-3-60...
  • Page 86 APPENDIX D — WIRING DIAGRAMS Fig. D — 581J*17-28 Power Diagram - 460-3-60...
  • Page 87 APPENDIX D — WIRING DIAGRAMS Fig. E — 581J*17-28 Power Diagram - 575-3-60...
  • Page 88 APPENDIX D — WIRING DIAGRAMS Fig. F — 581J*17-28 Control Diagram with Perfect Humidity System...
  • Page 89 APPENDIX D — WIRING DIAGRAMS Fig. G — 581J*17-28 Power Diagram 208/230-3-60 with Perfect Humidity System...
  • Page 90 APPENDIX D — WIRING DIAGRAMS Fig. H — 581J*17-28 Power Diagram - 460-3-60 with Perfect Humidity System...
  • Page 91 APPENDIX D — WIRING DIAGRAMS Fig. I — 581J*17-28 Power Diagram - 575-3-60 with Perfect Humidity System...
  • Page 92 APPENDIX D — WIRING DIAGRAMS Fig. J — RTU-OPEN Wiring Diagram...
  • Page 93 APPENDIX D — WIRING DIAGRAMS Fig. K — RTU-OPEN Wiring Diagram with Perfect Humidity System...

  • Page 94: Appendix E - Motormaster Sensor

    Fig. M — MotorMaster Sensor Locations - Size 28 Units Size 17, 20, and 24 Units © 2019 Bryant Heating & Cooling Systems Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
  • Page 95 UNIT START-UP CHECKLIST (Remove and Store in Job File) NOTE: To avoid injury to personnel and damage to equipment or property when com- pleting 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 Service and Maintenance Instruction document.
  • Page 96 9. Open humidistat input compressor and outdoor fan stop; LSV and DSV solenoids de-energized (Y/N) _____ 10. Restore set-points for thermostat and humidistat (Y/N) _____ REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS. © 2019 Bryant Heating & Cooling Systems Cat. No. 04-53581021-01 Edition Date: 12-19 Printed in U.S.A...

This manual is also suitable for:

581j 17-28 series581j 24d/f series581j 24k/m series581j 28d/f series581j 28k/m series

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