Bryant Legacy 547K Service And Maintenance Instructions
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Bryant Legacy 547K Service And Maintenance Instructions

Single package rooftop heat pump with puron refrigerant
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Legacy™ Line
547K 04-07
Single Package Rooftop Heat Pump
with Puron
(R-410A) Refrigerant
®
Service and Maintenance Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . . . 3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . . . 4
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Staged Air Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Condenser Coil (Outdoor) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Evaporator Coil (Indoor) . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Refrigeration System Components . . . . . . . . . . . . . . . . . . 11
Evaporator Coil Metering Devices . . . . . . . . . . . . . . . . . . 12
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Replacing TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Refrigerant System Pressure Access Ports . . . . . . . . . . . . 13
PURON (R-410A) REFRIGERANT . . . . . . . . . . . . . . . . . 13
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . . 14
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Replacing Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 16
Troubleshooting Cooling System . . . . . . . . . . . . . . . . . . . . 17
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . . 18
Convenience Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installing Weatherproof Cover . . . . . . . . . . . . . . . . . . . . . 18
Non-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Unit-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
COMMERICAL DEFROST CONTROL . . . . . . . . . . . . 19
Reversing Valve Control . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Compressor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Auxiliary (Electric) Heat control . . . . . . . . . . . . . . . . . . . . 20
Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Completing Heater Installation . . . . . . . . . . . . . . . . . . . . . 22
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Smoke Detector Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . . . . . . 23
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53547004-01
Page
Printed in U.S.A.
Form 547K-4-7-01
Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SENSOR AND CONTROLLER TESTS . . . . . . . . . . . . . 25
Sensor Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Controller Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Dirty Controller Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Dirty Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the Dirt Sensor Test . . . . . . . . . . . . . . . . . . . . . 26
Remote Station Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SD-TRM4 Remote Alarm Test Procedure . . . . . . . . . . . . 26
Dirty Sensor Test Using an SD-TRM4 . . . . . . . . . . . . . . . 26
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . 28
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Relief Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Control Circuit, 24-V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
RTU OPEN CONTROL SYSTEM . . . . . . . . . . . . . . . . . . 29
Sensory/Accessory Installation . . . . . . . . . . . . . . . . . . . . . 29
and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ECONOMIZER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . 30
EconoMi$er2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
EconoMi$er X (Factory Option) . . . . . . . . . . . . . . . . . . . . 39
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . . . . . . 52
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Additional Installation/Inspection . . . . . . . . . . . . . . . . . . 52
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . . . . . . . . 53
Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . . . . . . 53
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . . . . . . 53
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Ventilation (Continuous Fan) . . . . . . . . . . . . . . . . . . . . . . 53
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . . . 53
START-UP, RTU OPEN CONTROLS . . . . . . . . . . . . . . 53
APPENDIX A - MODEL NUMBER
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
APPENDIX B - PHYSICAL DATA . . . . . . . . . . . . . . . . 55
APPENDIX C - FAN PERFORMANCE . . . . . . . . . . . . 57
APPENDIX D - WIRING DIAGRAMS . . . . . . . . . . . . . 86
APPENDIX E - LOW AMBIENT CONTROL SENSOR
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
Pg 1
12-2020
Replaces: New

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Summary of Contents for Bryant Legacy 547K

  • Page 1: Table Of Contents

    Legacy™ Line 547K 04-07 Single Package Rooftop Heat Pump with Puron (R-410A) Refrigerant ® Service and Maintenance Instructions CONTENTS Page Completing Installation of Return Air Smoke Detector ........24 SAFETY CONSIDERATIONS .

  • Page 2: Safety Considerations

    SAFETY CONSIDERATIONS WARNING Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. UNIT OPERATION AND SAFETY HAZARD Only trained and qualified service personnel should install, re- pair, or service air-conditioning equipment. Untrained person- Failure to follow this warning could cause personal injury, nel can perform the basic maintenance functions of replacing death and/or equipment damage.

  • Page 3: Unit Arrangement And Access

    UNIT ARRANGEMENT AND ACCESS • Check refrigerant charge level • Ensure indoor coils are clean General • Check supply blower motor amperage Figures 1 and 2 show general unit arrangement and access Electric Heating locations. • Inspect power wire connections FILTER ACCESS PANEL •...

  • Page 4: Supply Fan (Blower) Section

    Supply Fan (Direct-Drive) All 547K units have the Axion™ Fan Technology direct drive 17 1/4” vane axial fan system. The fan is driven by an ECM motor with speed that is user set through the Unit Control Board (UCB). Speeds are fully configurable from 40% to 100% of motor’s maximum speed.
  • Page 5 Units with Electro-mechanical controls The Fan Speed set up controls are located on the lower section of the Unit Control Board (UCB). See Fig. 7 for location. 1. Check the job specifications for the CFM (cubic feet per minute) and ESP (external static pressure) required. 2.
  • Page 6 ESP in. wg Factory Setting: Calculator 9.0 V 1500 Field Setting: 1625 Record field setting here 1750 1875 2000 Switch Range: 2125 10.0 2250 4.1 - 7.5 2375 6.9 - 8.7 2500 7.7 - 10.0 Field Accessories: Economizer * Overlap in A, B, C switch range 1 Stage E Heat designed for maximum field adjustment potential.
  • Page 7 TROUBLESHOOTING THE ECM MOTOR Axion™ Fan motors are designed with several built-in protec- tions included in the motor software. If the motor detects a fault it will safely shut down. For temperature related faults the motor requires a line voltage reset to continue operation. For all others, the motor will resume operation automatically as soon as the fault condition is cleared.
  • Page 8 5. If required, remove stator limit switch on aluminum stator. 6. Install four #10-32 x -in. hex head machine screws 6. Remove three screws from the heat shield. Retain the heat (P/N: AD07AB126) to connect aluminum stator to motor. shield if a new heat shield has not been ordered. Tighten to 23 in.-lb (2.6 Nm).

  • Page 9: Staged Air Volume

    Condenser Coil (Outdoor) Reinstalling Motor and Fan Assembly See Fig. 13. The condenser coil is fabricated with round tube copper hairpins and plate fins of various materials and/or coatings (see Model 1. Align motor harness/grommet at ~7 o’clock (facing Number Nomenclature in Appendix A to identify the materials installer) and align the bottom flats on right and left sides provided in this unit).
  • Page 10 Clean coil as follows: 11. Move the inner coil back into position. Reinstall the lower and upper coil clips. Reinstall the top panel and replace all 1. Turn off unit power, tag disconnect. screws. 2. Remove all screws from the top panel except the screws securing the condenser fan to the top panel.

  • Page 11: Evaporator Coil

    cleaning solution for 10 minutes. Ensure surfaces are not allowed to dry before rinsing. Reapply cleaner as needed CAUTION to ensure 10-minute saturation is achieved. 8. Thoroughly rinse all surfaces with low velocity clean UNIT DAMAGE HAZARD water using downward rinsing motion of water spray noz- Failure to follow this caution may result in accelerated zle.

  • Page 12: Evaporator Coil Metering Devices

    Filter LPS/LOC Drier Cooling Liquid Line DFT 1 Acutrol Indoor Coil Outdoor Coil Strainer Accurater Heating Mode Liquid Line Fig. 19 — 547K 07N Piping Schematic — Two-Stage Cooling, Single Circuit The metering devices are multiple fixed-bore devices (Acutrol) Table 3 — Cooling Mode (each circuit) swedged into the horizontal outlet tubes from the liquid header, located at the entrance to each evaporator coil circuit path.

  • Page 13: Replacing Txv

    closes the pin. The refrigerant flow is effectively stabilized Puron (R-410A) refrigerant is provided in pink (rose) colored to the load demand with negligible change in superheat. cylinders. These cylinders are available with and without dip tubes; cylinders with dip tubes will have a label indicating this Replacing TXV feature.

  • Page 14: Refrigerant Charge

    Refrigerant Charge COOLING CHARGING CHARTS Amount of refrigerant charge is listed on the unit’s nameplate. Refer to Bryant GTAC2-5 Charging, Recovery, Recycling and 3 Ton FCQ / 547K / RHV R410A Charging Chart Reclamation training manual and the following procedures.

  • Page 15: Compressor

    COMPRESSOR 5 Ton 50FCQ / 547K / RHV Lubrication R410A Refrigerant Charging Chart (Unit must be operated in cooling mode) 1241 The compressor is charged with the correct amount of oil at the OUTDOOR TEMP factory. 1172 °F / °C 115 / 46 105 / 41 95 / 35...

  • Page 16: Compressor Rotation

    Compressor Rotation Filter Drier Replace whenever refrigerant system is exposed to atmo- sphere. Only use factory specified liquid-line filter driers with CAUTION working pressures no less than 650 psig (4482 kPa). EQUIPMENT DAMAGE HAZARD Failure to follow this caution can result in premature wear CAUTION and damage to equipment.

  • Page 17: Troubleshooting Cooling System

    Troubleshooting Cooling System Refer to Table 6 for additional troubleshooting topics. Table 6 — Troubleshooting SYMPTOM CAUSE SOLUTION Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Determine root cause. Defective thermostat, contactor, transformer. Replacement component.

  • Page 18: Convenience Outlets

    CONVENIENCE OUTLETS and location. Route 125-v power supply conductors into the bottom of the utility box containing the duplex receptacle. GFCI RECEPTACLE WARNING COVER - WHILE-IN-USE NOT INCLUDED WEATHERPROOF ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death.

  • Page 19: Duty Cycle

    Duty Cycle COMMERICAL DEFROST CONTROL The unit-powered convenience outlet has a duty cycle limita- On 547K units equipped with electro-mechanical controls or the tion. The transformer is intended to provide power on an inter- optional factory-installed RTU Open controller the Defrost Con- mittent basis for service tools, lamps, etc;...

  • Page 20: Reversing Valve Control

    Table 7 — 547K Defrost Board I/O and Jumper Configurations POINT NAME TYPE OF I/O CONNECTION PIN NUMBER UNIT CONNECTION NOTE INPUTS G Fan DI, 24 vac P2-3 CTB-G Y1 Cool 1 DI, 24 vac P2-5 CTB-Y1 Y2 Cool 2 DI, 24 vac P2-4 CTB-Y2...

  • Page 21: Electric Heaters

    ELECTRIC HEATERS Not all available heater modules can be used in every unit. Use only those heater modules that are UL listed for use in a specif- The 547K units can be equipped with field-installed accessory ic size unit. Refer to the label on the unit cabinet regarding electric heaters.

  • Page 22: Completing Heater Installation

    SMOKE DETECTORS Smoke detectors are available as factory-installed options on 547K models. Smoke detectors may be specified for supply air STATOR MANUAL only, for return air without or with economizer, or in combina- RESET LIMIT tion of supply air and return air. Return air smoke detectors are SWITCH arranged for vertical return configurations only.

  • Page 23: Smoke Detector Locations

    bracket high on the partition between return filter and controller location. The sensor is shipped in a flat-mounting location. Instal- lation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected. See installation steps.

  • Page 24: Completing Installation Of Return Air Smoke

    RETURN AIR SMOKE DETECTOR (Operating Position Shown) CONTROLLER MODULE RETURN AIR SCREWS (2) SAMPLING TUBE SAMPLE TUBE Fig. 44 — Return Air Sampling Tube Location (View reoriented to show opposite side for clarity.) Fig. 46 — Return Air Smoke Detector Operating Position Completing Installation of Return Air Smoke FIOP Smoke Detector Wiring and Response Detector...

  • Page 25: Sensor And Controller Tests

    Fig. 47 — Typical Smoke Detector System Wiring SENSOR AND CONTROLLER TESTS IMPORTANT: Failure to follow this ALERT can result Sensor Alarm Test in an unnecessary evacuation of the facility. The sensor alarm test checks a sensor’s ability to signal an This test places the duct detector into the alarm state.

  • Page 26: Changing The Dirt Sensor Test

    Table 9 — Dirty LED Test FLASHES DESCRIPTION 0-25% dirty. (Typical of a newly installed detector) SMOKE DETECTOR 25-50% dirty CONTROLLER 51-75% dirty − 76-99% dirty AUXILIARY EQUIPMENT DIRTY SENSOR TEST PROCEDURE 1. Hold the test magnet where indicated on the side of the sensor housing for two seconds.

  • Page 27: Indicators

    • A sensor’s environmental compensation limit is reached (100% dirty). • A wiring fault between a sensor and the controller is HVAC DUCT SAMPLING detected. TUBE SENSOR HOUSING • An internal sensor fault is detected Upon entering the trouble state: •...

  • Page 28: Protective Devices

    SENSOR’S POWER LED IS OFF into the discharge tube. Trip setting is 630 psig ± 10 psig (4344 ± 69 kPa) when hot. Reset is automatic at 505 psig (3482 kPa). 1. Check the controller’s Power LED. If it is off, determine why the controller does not have power and make the nec- LOW PRESSURE SWITCH essary repairs.

  • Page 29: Rtu Open Control System

    The RTU Open controller is an integrated component of the Open must be routed through the raceway built into the corner Bryant rooftop unit. Its internal application programming post of the unit or secured to the unit control box with electrical provides optimum performance and energy efficiency.

  • Page 30: Additional Rtu Open Installation

    Additional RTU Open Installation and Troubleshooting OUTSIDE AIR TEMPERATURE SENSOR Additional installation, wiring and troubleshooting information ECONOMI$ER X HARNESS for the RTU Open Controller can be found in the following manual: “RTU Open Multi-Protocol Controller Factory- Installed Option – Controls, Start-up, Operation and Trouble- shooting Instructions.”...

  • Page 31: Economi$Er2

    EconoMi$er2 IMPORTANT: The optional EconoMi$er 2 does not ® include a controller. The EconoMi$er2 is operated by a 4 to 20 mA signal from an existing field-supplied control- ler. See Fig. 55 for wiring information. BLACK TRANSFORMER GROUND BLUE 500 OHM RESISTOR VIOLET PINK...

  • Page 32: Economi$Er Iv (Field-Installed Accessory)

    EconoMi$er IV (Field-Installed Accessory) IMPORTANT: For 547K rooftop units EconoMi$er IV is available as a factory-installed option for 04 - 06 units only. ECONOMI$ER IV STANDARD SENSORS Troubleshooting instructions are enclosed. A functional view of the EconoMi$er IV accessory is shown in Fig. 56. Typical ®...
  • Page 33 Table 11 — EconoMi$er IV Input/Output Logic INPUTS OUTPUTS Demand Enthalpy* Compressor N Terminal† Controlled Ventilation Outdoor Return Stage 1 Stage 2 Occupied Unoccupied (DCV) High (Free Cooling Minimum position Closed LED Off) Below set (DCV LED Off) Modulating** (between Modulating** (between min.
  • Page 34 Table 12 — Supply Air Sensor Temperature/Resistance The outdoor enthalpy changeover set point is set with the out- Values door enthalpy set point potentiometer on the EconoMi$er ® controller. The set points are A, B, C, and D. See Fig. 63 and TEMPERATURE (F) RESISTANCE (ohms) 64.
  • Page 35 HORIZONTAL ECONOMIZER BAROMETRIC RELIEF FLOW VERTICAL ECONOMIZER BAROMETRIC RELIEF FLOW 2500 2500 Horizontal Economizers Vertical Economizers 2000 2000 1500 1500 3-5 Ton 3-5 Ton 6 Ton 6 Ton 1000 1000 0.05 0.15 0.25 0.05 0.15 0.25 RETURN DUCT STATIC PRESSURE (in. wg) RETURN DUCT STATIC PRESSURE (in.
  • Page 36 Exhaust Set Point Adjustment The exhaust set point will determine when the exhaust fan runs (29) (32) (35) (38) (41) (43) based on damper position (if accessory power exhaust is in- CONTROL CONTROL POINT stalled). The set point is modified with the Exhaust Fan set CURVE APPROX.
  • Page 37 TR and N. When the timeclock Use setting 1 or 2 for Bryant equipment. contacts are closed, the EconoMi$er IV control will be in occu- pied mode. When the timeclock contacts are open (removing 1.
  • Page 38 10. Set DCV maximum position potentiometer fully CW DCV MINIMUM AND MAXIMUM POSITION (clockwise). To check the DCV minimum and maximum position: 11. Set enthalpy potentiometer to D. 1. Make sure EconoMi$er IV preparation procedure has been 12. Apply power (24 vac) to terminals TR and TR1. performed.

  • Page 39: Economi$Er X (Factory Option)

    EconoMi$er X (Factory Option) Economizer Module The module is the core of the EconoMi$er X system. The mod- The EconoMi$er X system is an expandable economizer con- ® ule is mounted in the unit’s control box, and includes the user trol system, which includes a W7220 economizer module (con- interface for the system.
  • Page 40 INPUTS Sensors NOTE: A Mixed Air (MA) analog sensor is required on all W7220 units; either an Outdoor Air (OA) sensor for dry bulb change over or an OA bus sensor for outdoor enthalpy change over is required in addition to the MA sensor. An additional Return Air (RA) bus sensor can be added to the system for dif- ferential enthalpy or dry bulb changeover.
  • Page 41 Table 14 — Economizer Module - Right Hand Terminal Table 15 — HH57AC081 Sensor Wiring Terminations Blocks TERMINAL TYPE DESCRIPTION LABEL TYPE DESCRIPTION NUMBER LABEL Top Right Terminal Blocks S-BUS Communications AUX2 I 24 vac IN The first terminal is not used. S-BUS S-BUS (Enthalpy Control...
  • Page 42 • Press the ▼ (Down arrow) button to move to the next 7. Press the (Enter) button to accept the displayed value menu. and store it in nonvolatile RAM. “CHANGE STORED” displays. • Press the (Enter) button to display the first item in the 8.
  • Page 43 Table 17 — W7220 Menu Structure* PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † FIRST STAGE COOLING DEMAND (Y1–IN) ECON AVAIL YES/NO YES = economizing available; the system can use outside air for free cooling when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO...
  • Page 44 Table 17 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † EXHAUST STAGE 2 RELAY OUTPUT Output of AUX1 O terminal Displays ON when damper position reaches programmed EXH2 OUT ON/OFF percentage set point.
  • Page 45 Table 17 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † EXHAUST FAN STAGE 1 SETPOINT Set point for OA damper position when exhaust fan 1 is powered 0 to 100%; by the economizer.
  • Page 46 Table 17 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † NONE Used for alarm for when the DA air temperature is too high. Sets 70°F to 180°F DA HI ALM 80°F (27°C) upper range of alarm;...
  • Page 47 Table 17 — W7220 Menu Structure* (cont) PARAMETER PARAMETER EXPANDED PARAMETER NAME MENU PARAMETER DEFAULT RANGE AND Notes VALUE INCREMENT † Check if outdoor temperature is below the LOW Temp Lockout on set point menu. Check if Mixed air temperature on STATUS FREEZE ALARM menu is below the Lo Set point on Advanced menu.
  • Page 48 Table 19 — Dry Bulb 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...
  • Page 49 Table 22 — Enthalpy Operation with DCV (CO Sensor) — 1 Speed Fan (cont) DEMAND OUTSIDE AIR CONTROLLED GOOD TO Y1-I Y2-I FAN SPEED Y1-O Y2-O OCCUPIED UNOCCUPIED VENTILATION (DCV) ECONOMIZE VENTMIN to High 0-v/Off 0-v/Off Closed VENTMAX VENTMIN L to High 24-v/On 0-v/Off...
  • Page 50 Table 25 — Enthalpy Operation without 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 MIN POS Closed 24v/On 0v/Off MIN POS Closed HIGH 24v/On 24v/On MIN POS...
  • Page 51 Table 27 — Single Enthalpy and Dual Enthalpy High Limit Curves POINT P1 POINT P2 ENTHALPY TEMP. DRY TEMP. ENTHALPY HUMIDITY HUMIDITY CURVE BULB (F) DEWPOINT (F) (btu/lb/da) TEMP. (F) TEMP. (F) (%RH) (%RH) 28.0 36.8 66.3 80.1 26.0 39.6 63.3 80.0 24.0...

  • Page 52: Pre-Start-Up/Start-Up

    devices (e.g. sensors, actuator) to become operational. The ex- ception is the SAT sensor which will alarm immediately. WARNING If one or more alarms are present and there has been no keypad ac- tivity for at least 5 minutes, the Alarms menu displays and cycles ELECTRICAL OPERATION HAZARD through the active alarms.

  • Page 53: Return-Air Filters

    Return-Air Filters fan switch at AUTO. position. Adjust thermostat to a setting be- low room temperature. Compressor starts on closure of contactor. Ensure correct filters are installed in unit. (See “APPENDIX B — Check unit charge. Refer to Refrigerant Charge section on PHYSICAL DATA”...

  • Page 54: Nomenclature

    APPENDIX A — MODEL NUMBER NOMENCLATURE Position: 9 10 11 12 13 14 15 16 17 Example: Unit Type Packaging and Control Heat Pump RTU with optional A = Standard Packaging, electro-mechanical Electric Heat, Legacy™ Line controls, no intake or exhaust option. Will allow for use of all field-installed economizers, manual or 2-position damper.

  • Page 55: Appendix B - Physical Data

    APPENDIX B — PHYSICAL DATA 547K 3 TO 4 TON PHYSICAL DATA 547K UNIT 547K*04A 547K*05A NOMINAL TONS BASE UNIT OPERATING WT (lb)* REFRIGERATION SYSTEM No. Circuits/No. Compressors/Type 1 / 1/ Scroll 1 / 1/ Scroll Puron (R-410A) Charge (lbs-oz) ®...
  • Page 56 APPENDIX B — PHYSICAL DATA 547K 5 TO 6 TON PHYSICAL DATA 547K UNIT 547K*06A 547K*07N NOMINAL TONS BASE UNIT OPERATING WT (lb)* REFRIGERATION SYSTEM No. Circuits/No. Compressors/Type 1 / 1 / Scroll 1 / 1 / 2-Stage Scroll Puron ®...

  • Page 57: Appendix C - Fan Performance

    APPENDIX C — FAN PERFORMANCE GENERAL FAN PERFORMANCE NOTES 1. Interpolation is permissible. Do not extrapolate. 2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories. 3.
  • Page 58 APPENDIX C — FAN PERFORMANCE 547K*04A SINGLE PHASE — 3 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1060 0.08 1325 0.16 1541 0.25 1718 0.35 1871 0.46 1103 0.09 1355 0.17 1572 0.27 1752 0.37 1906 0.48 1050...
  • Page 59 APPENDIX C — FAN PERFORMANCE 547K*04A SINGLE PHASE – MEDIUM STATIC — 3 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1060 1325 1541 1718 1871 1103 1355 1572 1752 1906 1050 1150 1387 1602 1784 1941 1125 1198...
  • Page 60 APPENDIX C — FAN PERFORMANCE 547K*04A THREE PHASE — 3 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1060 0.08 1325 0.16 1541 0.25 1718 0.35 1871 0.46 1103 0.09 1355 0.17 1572 0.27 1752 0.37 1906 0.48 1050...
  • Page 61 APPENDIX C — FAN PERFORMANCE 547K*04A THREE PHASE – MEDIUM STATIC — 3 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1060 1325 1541 1718 1871 1103 1355 1572 1752 1906 1050 1150 1387 1602 1784 1941 1125 1198...
  • Page 62 APPENDIX C — FAN PERFORMANCE 547K*05A SINGLE PHASE — 4 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1095 0.14 1302 0.24 1484 0.35 1646 0.48 1794 0.63 1300 1151 0.16 1347 0.26 1523 0.38 1681 0.51 1826...
  • Page 63 APPENDIX C — FAN PERFORMANCE 547K*05A SINGLE PHASE – MEDIUM STATIC — 4 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1094 1302 1484 1646 1794 1300 1150 1347 1523 1681 1826 1400 1209 1395 1565 1719 1860...
  • Page 64 APPENDIX C — FAN PERFORMANCE 547K*05A THREE PHASE — 4 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1094 0.14 1302 0.24 1484 0.35 1646 0.48 1794 0.63 1300 1150 0.16 1347 0.26 1524 0.38 1681 0.51 1826...
  • Page 65 APPENDIX C — FAN PERFORMANCE 547K*05A THREE PHASE – MEDIUM STATIC — 4 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1094 1302 1484 1646 1794 1300 1150 1347 1524 1681 1826 1400 1209 1395 1565 1719 1860...
  • Page 66 APPENDIX C — FAN PERFORMANCE 547K*06A SINGLE PHASE — 5 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1228 0.20 1394 0.29 1554 0.40 1701 0.53 1836 0.66 1625 1305 0.24 1457 0.33 1609 0.44 1750 0.57 1882...
  • Page 67 APPENDIX C — FAN PERFORMANCE 547K*06A SINGLE PHASE – MEDIUM STATIC — 5 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1228 1394 1554 1701 1836 1625 1305 1457 1609 1750 1882 1750 1384 1523 1666 1802 1930...
  • Page 68 APPENDIX C — FAN PERFORMANCE 547K*06A THREE PHASE — 5 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1228 0.20 1394 0.29 1554 0.40 1701 0.53 1836 0.66 1625 1305 0.24 1457 0.33 1609 0.44 1750 0.57 1882...
  • Page 69 APPENDIX C — FAN PERFORMANCE 547K*06A THREE PHASE – MEDIUM STATIC — 5 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1228 1394 1554 1701 1836 1625 1305 1457 1609 1750 1882 1750 1384 1523 1666 1802 1930...
  • Page 70 APPENDIX C — FAN PERFORMANCE 547K*07N THREE PHASE — 6 TON VERTICAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1800 1416 0.30 1549 0.39 1690 0.51 1824 0.64 1950 0.78 1950 1516 0.37 1635 0.46 1764 0.58 1891 0.71 2012...
  • Page 71 APPENDIX C — FAN PERFORMANCE 547K*07N THREE PHASE – MEDIUM STATIC — 6 TON VERTICAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1800 1416 1549 1690 1824 1950 1950 1516 1635 1764 1891 2012 2100 1616 1724 1841 1961 2078...
  • Page 72 APPENDIX C — FAN PERFORMANCE 547K*04 A SINGLE PHASE — 3 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1036 0.08 1301 0.15 1517 0.24 1698 0.34 1855 0.44 1077 0.09 1331 0.16 1546 0.26 1727 0.36 1885 0.47...
  • Page 73 APPENDIX C — FAN PERFORMANCE 547K*04A SINGLE PHASE – MEDIUM STATIC — 3 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1036 1301 1517 1698 1855 1077 1331 1546 1727 1885 1050 1119 1362 1574 1755 1915 1125 1164...
  • Page 74 APPENDIX C — FAN PERFORMANCE 547K*04A THREE PHASE — 3 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1036 0.08 1301 0.15 1517 0.24 1698 0.34 1855 0.44 1076 0.09 1330 0.16 1545 0.26 1727 0.36 1885 0.47 1050...
  • Page 75 APPENDIX C — FAN PERFORMANCE 547K*04A THREE PHASE – MEDIUM STATIC — 3 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1036 1301 1517 1698 1855 1076 1330 1545 1727 1885 1050 1119 1361 1573 1756 1915 1125 1164...
  • Page 76 APPENDIX C — FAN PERFORMANCE 547K*05A SINGLE PHASE — 4 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1066 0.13 1280 0.22 1473 0.34 1644 0.47 1798 0.61 1300 1120 0.15 1320 0.24 1506 0.36 1674 0.49 1826...
  • Page 77 APPENDIX C — FAN PERFORMANCE 547K*05A SINGLE PHASE – MEDIUM STATIC — 4 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1066 1280 1473 1644 1798 1300 1120 1320 1506 1674 1826 1400 1177 1363 1541 1705 1856...
  • Page 78 APPENDIX C — FAN PERFORMANCE 547K*05A THREE PHASE — 4 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1067 0.13 1280 0.22 1473 0.34 1645 0.47 1798 0.61 1300 1121 0.15 1320 0.24 1506 0.36 1675 0.49 1827...
  • Page 79 APPENDIX C — FAN PERFORMANCE 547K*05A THREE PHASE – MEDIUM STATIC — 4 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1200 1067 1280 1473 1645 1798 1300 1121 1320 1506 1675 1827 1400 1177 1363 1542 1706 1856...
  • Page 80 APPENDIX C — FAN PERFORMANCE 547K*06A SINGLE PHASE — 5 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1197 0.18 1360 0.26 1525 0.37 1679 0.49 1822 0.62 1625 1271 0.21 1421 0.29 1574 0.40 1721 0.52 1860...
  • Page 81 APPENDIX C — FAN PERFORMANCE 547K*06A SINGLE PHASE – MEDIUM STATIC — 5 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1197 1360 1525 1679 1822 1625 1271 1421 1574 1721 1860 1750 1348 1485 1627 1767 1901...
  • Page 82 APPENDIX C — FAN PERFORMANCE 547K*06 A THREE PHASE — 5 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1196 0.18 1360 0.26 1525 0.37 1679 0.49 1822 0.62 1625 1271 0.21 1421 0.29 1574 0.40 1721 0.52...
  • Page 83 APPENDIX C — FAN PERFORMANCE 547K*06A THREE PHASE – MEDIUM STATIC — 5 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1500 1196 1360 1525 1679 1822 1625 1271 1421 1574 1721 1860 1750 1348 1485 1627 1767 1901...
  • Page 84 APPENDIX C — FAN PERFORMANCE 547K*07N THREE PHASE — 6 TON HORIZONTAL SUPPLY (RPM - BHP) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1800 1378 0.27 1512 0.35 1649 0.46 1786 0.58 1918 0.72 1950 1473 0.32 1594 0.41 1721 0.52 1848 0.64 1973...
  • Page 85 APPENDIX C — FAN PERFORMANCE 547K*07N THREE PHASE – MEDIUM STATIC — 6 TON HORIZONTAL SUPPLY (RPM - VDC) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 1800 1378 1512 1649 1786 1918 1950 1473 1594 1721 1848 1973 2100 1569 1680 1796 1915 2032...

  • Page 86: Appendix D - Wiring Diagrams

    APPENDIX D — WIRING DIAGRAMS WIRING DIAGRAMS 547K 04-07 UNITS SIZE VOLTAGE CONTROL (OVERLAY) PAGE POWER PAGE 208/230-1-60 48TC003163 04-06 Electro-Mechanical 208/230-3-60 48TC003166 48TC003162 W7212 Controller 460/575-3-60 48TC003164 208/230-1-60 48TC003163 04-06 Electro-Mechanical 208/230-3-60 48TC003166 (48TC003217) 48TC003162 W7220 Controller 460/575-3-60 48TC003164 208/230-3-60 48TC003160 48TC003162...
  • Page 87 APPENDIX D — WIRING DIAGRAMS...
  • Page 88 APPENDIX D — WIRING DIAGRAMS...
  • Page 89 APPENDIX D — WIRING DIAGRAMS...
  • Page 90 APPENDIX D — WIRING DIAGRAMS...
  • Page 91 APPENDIX D — WIRING DIAGRAMS...
  • Page 92 APPENDIX D — WIRING DIAGRAMS...
  • Page 93 APPENDIX D — WIRING DIAGRAMS...
  • Page 94 APPENDIX D — WIRING DIAGRAMS Fig. I — 547K*04-06 Power Wiring Diagram — 208/230-1-60...
  • Page 95 APPENDIX D — WIRING DIAGRAMS Fig. J — 547K*04-07 Power Wiring Diagram — 208/230-3-60...
  • Page 96 APPENDIX D — WIRING DIAGRAMS Fig. K — 5047K*04-07 Power Wiring Diagram — 460/575-3-60...

  • Page 97: Location

    APPENDIX E — LOW AMBIENT CONTROL SENSOR LOCATION SENSOR LOCATION SENSOR LOCATION Fig. L — 547K*04 Outdoor Circuiting Fig. M — 547K*05 Outdoor Circuiting...
  • Page 98 APPENDIX E — LOW AMBIENT CONTROL SENSOR LOCATION SENSOR LOCATION SENSOR LOCATION Fig. N — 547K*06 Outdoor Circuiting Fig. O — 547K*07 Outdoor Circuiting Form No: 547K-4-7-01 © 2020 Carrier Cat. No. 04-53547004-01 Edition Date: 12-2020 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces:New...

  • Page 99: Start-Up Checklist

    START-UP CHECKLIST 547K*04-07 SINGLE PACKAGE ROOFTOP COOLING ONLY/ELECTRIC HEAT UNIT (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 Service and Maintenance Instruction document.
  • Page 100 Form No: 547K-4-7-01 © 2020 Carrier Cat. No. 04-53547004-01 Edition Date: 12-2020 Printed in U.S.A. Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. CL-2 Replaces: New...

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