Hussmann H Series Installation And Operation Manual
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Hussmann H Series Installation And Operation Manual

Hussmann H Series Installation And Operation Manual

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Condensing Unit
Installation and
Operation Manual
PN 0708232_F
November 2019
MANUAL 1/O H-SERIES CONDENSING UNIT

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  • Page 1 Condensing Unit Installation and Operation Manual PN 0708232_F November 2019 MANUAL 1/O H-SERIES CONDENSING UNIT...
  • Page 2 There are numerous hazards, not limited to, but including: burns due to high temperatures, high pressures, Hussmann recommends responsible handling of refrige- toxic substances, electrical arcs and shocks, rants that contain Chlorine, Fluorine and Carbon (CFCs)
  • Page 3 August 31, 2018 directed by the Engineer of Record. This warning does not mean that Hussmann products will cause cancer or reproductive harm, or is in violation of any product-safety standards or requirements. As clarified by the California State...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS MODEL NUMBERING SYSTEM....................6 INSTALLATION INSTRUCTIONS ....................7 SHIPPING DAMAGE ........................ 7 Apparent Loss or Damage ..................... 7 Concealed Loss or Damage ....................7 RIGGING AND LIFTING ......................7 MACHINE ROOM REQUIREMENTS ..................8 UNIT PLACEMENT ........................8 SHIPPING BLOCK REMOVAL ......................
  • Page 5 PN 0708232_F ELECTRICAL ..........................22 OVERVIEW ..........................22 GUIDELINES FOR FIELD WIRING ..................22 Unit Cooler Fan Wiring ......................22 Evaporator Mounted Liquid Line Solenoid ................22 Cooler Door Switch Wiring ....................22 Sizing Wire and Overcurrent Protectors ................22 Defrost Controls ........................

  • Page 6: Model Numbering System

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  • Page 7: Installation Instructions

    PN 0708232_F INSTALLATION INSTRUCTIONS SHIPPING DAMAGE All equipment should be thoroughly examined for shipping damage before and while unloading. This equipment has been carefully inspected at our factory and the carrier has assumed responsibility for safe arrival. If damaged, either apparent or concealed, claim must be made to the carrier.

  • Page 8: Machine Room Requirements

    MACHINE ROOM REQUIREMENTS The equipment room floor must solidly support the compressor unit as a live load. Ground level installation seldom presents problems, but a mezzanine installation must be carefully engineered. Equipment must be located in the machine room to provide enough working space for service personnel, and to meet electrical codes.

  • Page 9: Shipping Block Removal

    PN 0708232_F MINIMUM ALLOWABLE CLEARANCES Between an Outdoor Condensing Unit and any vertical structure (except open chain link fence) the minimum allowable distance is 4 feet. Between one Outdoor Condensing Unit exhaust and another Outdoor Condensing Unit intake the minimum allowable distance is 15 feet. Between the sides of two Outdoor Condensing Units the minimum allowable distance is 5 feet.

  • Page 10: Two-Tier Application

    TWO-TIER APPLICATION PRESSURE RELIEF The two-tier unit is only an option when it is installed on the heavy duty base (option) and It is standard that a fusible plug is installed on all it is designed for indoor, water-cooled, remote the receivers.

  • Page 11: Refrigeration Process

    PN 0708232_F REFRIGERATION PROCESS OVERVIEW In these instructions the following constants are This section details the refrigeration process by maintained to assist the reader. tracking the refrigerant flow through the system components. Heat Reclaim, Demand Cooling, Oil In the diagrams refrigerant flow direction is separation and return is explained.

  • Page 12: Refrigeration Cycle

    REFRIGERATION CYCLE The Condenser rejects the heat that must be Beginning with the Compressor, refrigerant vapor removed from refrigerant to cause it to condense. is compressed and flows to the Oil Separator, which separates the oil from the discharge gas For Low Ambient Conditions, Fan Cycling or by centrifugal force and screen baffles.

  • Page 13: Heat Reclaim Valve

    PN 0708232_F The Receiver is a holding vessel for liquid At critical locations along the refrigerant path, refrigerant that compensates for fluctuations service valves or ball valves allow isolation of in liquid requirements due to changing load, components. defrost, and weather. HEAT RECLAIM VALVE A Liquid Line Drier removes moisture and contaminants from the refrigerant.

  • Page 14: Demand Cooling

    Temperature Approximate Ohm °F Reading Energized 90,000 To Suction 2,400 Manifold 2,100 1,700 To Heat Reclaim The Control Module responds to the Temperature Sensor input by energizing the Injection Valve Solenoid when 292°F is exceeded. Too high or too low a resistance from the thermistor circuit will From cause the Module to shutdown the compressor Discharge...

  • Page 15: Component Testing

    PN 0708232_F Component Testing Remove power to the system. Unplug the Temperature Sensor from the Module. The Sensor should ohm out between 1,600 Ohms and 100,000 Ohms. Leave the Sensor unplugged and restart the system. There should be no voltage between terminals “S”...

  • Page 16: Operational Notes

    • A shorted circuit or very low Thermistor Resistance. • An open circuit or very high Thermistor Resistance. Operational Notes Demand Cooling does NOT replace head cooling fans, which may be required on low temperature applications. On indoor and outdoor condensing units, the condenser fans replace the head cooling fan.

  • Page 17: Component Piping

    PN 0708232_F COMPONENT PIPING OVERVIEW This section deals with the information necessary for installing the refrigeration lines for a condensing unit. The components are piped as completely as practical at the factory. Use only clean, dehydrated, sealed refrigeration grade copper tubing. Use dry nitrogen in the tubing during brazing to prevent the formation of copper oxide.

  • Page 18: From Machine To Solid Object

    From Machine to Solid Object When mounting lines from machinery to a solid Reduced object allow line freedom for vibration to prevent Riser metal fatigue. Clamp Here Factory Clamp 10 X Pipe Diameter Figure 3-5 Reduced Riser Factory Supplied Stubs Stub sizes provided do not automatically correspond to the line sizes necessary.
  • Page 19 PN 0708232_F Fixed Flooding Valve Piping Heat Reclaim Valve Bleed Line to Suction All Piping and Valves in this Header End of Fixed Flooding Valve box are field Condenser supplied and Liquid Return Line Installed. 3” Min Rise Receiver Heating Coil To Heat Reclaim From...

  • Page 20: Merchandiser Piping

    MERCHANDISER PIPING SPECIAL PIPING FOR OPEN ROOMS Suction Line • Pitch in direction of flow. An open preparation room allows heat infiltration • May be reduced by one size at one third of run from the rest of the store at a rate which may load and again after the second third.

  • Page 21: Refrigerant Line Sizing

    PN 0708232_F REFRIGERANT LINE SIZING General Information require two single point connections, one for This document supersedes previously the compressor (460V or 575V) and one for the published line sizing data – including planning control and defrost circuits (208-230V). When a data, installation instructions, or other stand- single point connection is specified for 460V and alone documents.

  • Page 22: Electrical

    ELECTRICAL ABOUT THESE ELECTRICAL DIAGRAMS • For 380/3/50 Condensing Units: To each condensing unit provide; All diagrams show the electrical system DE- one 380/3/50 branch circuit, one Neutral energized and in refrigeration mode. Diagrams emphasize individual circuit continuity and Note 1 – Omit when single point connection kit is logic.

  • Page 23: Electrical Diagrams

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  • Page 38: Startup

    STARTUP WARNING Know whether a circuit is open at the power supply or not. Remove all power before opening control panels. Note: Some equipment has more than one power supply. Always use a pressure regulator with a nitrogen tank. Do not exceed 2 pounds of pressure and vent lines when brazing.

  • Page 39: Evacuation

    PN 0708232_F Evacuation Nitrogen and moisture will remain in the system If the 500-micron vacuum holds, charging may unless proper evacuation procedures are followed. begin. If not the cause must be determined and Nitrogen left in the system may cause head pressure corrected.

  • Page 40: Charging

    Shut down the unit at first indication of unusual Air Cooled Condenser operation, locate and correct cause. Electrical requirements and power supply Electrical connections tight and clean Leak testing, evacuation and initial charging are Proper fan operation now completed. Thermostat or pressure settings Note: With non-azeotropic refrigerants, it is best Damper operation, if equipped.

  • Page 41: Final Checks

    PN 0708232_F Look for the light on the single phase protector. • Winter controls If it is not lit, turn OFF the main disconnect. Have the field connections to the main breaker • TEV superheat adjustment of the unit corrected so the phase protector indicates phase alignment (The light is lit).

  • Page 42: Maintenance

    MAINTENANCE This Procedure is not designed to cover system Remove bolts from suction and discharge service changeover to a different refrigerant. valves. COMPRESSOR REPLACEMENT Remove mounting bolts. Since each machine room tends to be unique, plan When moving the compressor, use a come-along, carefully as to how you will move the compressor hoist or hydraulic lift to carry the weight.

  • Page 43: Appendix A - Dimension Drawings

    PN 0708232_F APPENDIX A – DIMENSION DRAWINGS Condensing Unit Installation and Operation Manual...
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  • Page 91: Troubleshooting Information

    PN 0708232_F SERVICE TROUBLE SHOOTING INFORMATION SPORLAN http://www.sporlanonline.com EMERSON Fault Finder app http://www.emersonclimate.com/en-us/ Resources/Mobile_Apps/Pages/mobileapps.aspx SQUARED HOTLINE 888-SQUARED (888-778-2733) Tech Support Line. Level One provides product initial Tech Support and can connect the Caller to Level 2, if required. Condensing Unit Installation and Operation Manual...

  • Page 92: Troubleshooting Guide

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  • Page 93 PN 0708232_F HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Condensing Unit Installation and Operation Manual...
  • Page 94 To obtain warranty information or other support, contact your Hussmann representative. Please include the model and serial number of the product. Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 October 2012...
  • Page 95 Hussmann Corporation 12999 St. Charles Rock Road Bridgeton, MO 63044-2483 www.hussmann.com...

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