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www.conairgroup.com
USER GUIDE
UGH031-0209
TM
EarthSmart
ECM Series, 0.50 to 0.75 ton models
Corporate Office: 724-584-5500 l Instant Access 24/7 (Parts and Service): 800.458.1960 l Parts and Service: 814.437.6861
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Please record your equipment’s It’s a good idea to record the model and serial number(s) of your equipment and model and serial number(s) and the date you received it in the User Guide. Our service department uses this infor- the date you received it in the mation, along with the manual number, to provide help for the specific equipment spaces provided. you installed. Please keep this User Guide and all manuals, engineering prints and parts lists together for documentation of your equipment. Dat
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Table of Contents 1-1 Introduction Purpose of the user guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 How the guide is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Your responsibilities as a user. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 ATTENTION: Read this so no one gets hurt . . . . . . . . . . . . . . . . . . . 1-4 2-1 Description What is the EarthSmart ECM Series Chiller?. . . . . . . . . . . . . . . . . . .2-2 Typic
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Stopping the chiller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Changing temperature units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 Chiller operation sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6 Resetting the high pressure switch of the compressor . . . . . . . . . . 4-8 5-1 Maintenance Preventative maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Checking electrical connections . . .
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B Appendix Safety adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 C Appendix Water quality control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 D Appendix Chiller capacity and derate chart . . . . . . . . . . . . . . . . . . . . . . . . . . D-1 E Appendix Pressure-temperature chart for R-134A refrigerant. . . . . . . . . . . . . E-1 F Appendix RTD resistance chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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iv l Table of Contents
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1 Introduction SECTION 1 Introduction Purpose of the user guide . . . . . . . . . . . . . . 1-2 How the guide is organized . . . . . . . . . . . . . 1-2 Your responsibilities as a user. . . . . . . . . . . 1-3 ATTENTION: Read this so no one gets hurt . . . 1-4 Introduction l 1-1
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Purpose of the User Guide This User Guide describes the EarthSmart ECM Series Chiller and explains step-by-step how to install, operate, maintain and repair this equipment. Before installing this product, please take a few moments to read the User Guide and review the diagrams and safety information in the instruction packet. You also should review manuals covering associated equipment in your system. This review won’t take long, and it could save you valuable installation and operating time lat
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1 Introduction Your Responsibility as a User You must be familiar with all safety procedures concerning installation, opera- tion and maintenance of this equipment. Responsible safety procedures include: � Thorough review of this User Guide, paying particular attention to hazard warnings, appendices and related diagrams. � Thorough review of the equipment itself, with careful attention to voltage sources, intended use and warning labels. � Thorough review of instruction manuals for associated
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ATTENTION: Read this so no one gets hurt We design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by following the procedures outlined below and elsewhere in the User Guide. WARNING: Improper installation, operation or servicing may result in equipment damage or personal injury. This equipment should be installed, adjusted and serviced by a quali- fied technician who is familiar with the construction, operation and potential hazards of th
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1 Introduction ATTENTION: Read this so no one gets hurt (continued) CAUTION: Hot Surfaces Always protect yourself from hot surfaces when working on the chiller, especially when working on or around the compressor and condenser. These devices can be over 160°F {71°C}. Allow these devices to cool before performing any maintenance or troubleshooting. WARNING: Refrigerant hazard Only certified refrigerant technicians should examine and correct problems involving the refrigerant circuit. Introduction
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1-6 l Introduction
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2 Description SECTION 2 Description What is the EarthSmart ECM Series Chiller?. . 2-2 Typical applications . . . . . . . . . . . . . . . . . . 2-2 Limitations . . . . . . . . . . . . . . . . . . . . . . . . 2-3 How it works: Process circulation . . . . . . . . 2-4 Refrigeration circulation . . . . . 2-5 Component listing . . . . . . . . . 2-6 Specifications: EarthSmart ECM Series Chillers . . . . . . . . . . . . . . . . . . 2-8 Pump curve: EarthSmart ECM Series Chillers . . . . . . . . . . . .
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What is the EarthSmart ECM Series Chiller? ✐ NOTE: Chiller’s environment The Conair EarthSmart ECM Series Chillers provide self-contained sources of and cooling temperatures chilled water and are available with compressor ranges of 0.5 Hp or 0.75 Hp below the default cooling (nominal capacities of 0.41 tons or 0.70 tons of refrigeration). ranges will affect cooling IMPORTANT: Nominal chilling capacities are based on 95°F {35°C} ambient air conditions and capacities. processing 50°F {10°C} leavi
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2 Description Limitations Conair EarthSmart ECM Series Chillers are chosen based on the cooling load, ambient temperature and cooling temperature. ● Cooling load - Choose a chiller that has 0 - 10% more cooling capacity than the process load to be chilled. ● Ambient temperature - The chiller’s air-cooled condenser requires an ambient air temperature between 40° to 95°F {4.4° to 35°C} for efficient operation. Operation above 95°F {35°C} may result in elevated condensing pressures and will ev
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How it Works: Process Circulation (Left-side as viewed from the control) 1 2 3 Hot fluid from the process enters the chiller 1 through the “From Process” inlet into the chiller’s reservoir. Pump moves fluid from the reservoir through 2 evaporator where it is chilled. Fluid is chilled in the evaporator and exits 3 through the “To Process” outlet, returning to the process. 2-4 l Description
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2 Description How it Works: Refrigerant Circulation (Right-side as viewed from the control) (Left-side as viewed from the control) 3 2 From Process inlet Pump To Process outlet 1 4 Drain/Fill The evaporator extracts heat from the process fluid, 1 causing the refrigerant to vaporize (evaporate) into a gas. Vaporized refrigerant travels to the compressor, where the 2 low-pressure vapor is compressed into a high-pressure, high-temperature vapor. The high-pressure, high-temperature vapor travels fro
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How it Works: Component Listing Water system � Motor/Pump assembly - The motor/pump assembly circulates chilled coolant through the process loop. The pump assembly is built with brass to maintain water quality. Refrigeration system � Compressor - Hermetic compressor takes low-pressure, low-temperature refrigerant gas and compresses the gas into high-pressure, high-temperature vapor. � Air-cooled condenser - The air-cooled condenser removes heat BTUs from the compressor refrigerant gas. The
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2 Description How it Works: Component Listing (continued) � Evaporator - The evaporator is a brazed plate heat exchanger where the liquid refrigerant is allowed to evaporate (boil off) to absorb the heat (BTU) from the process fluid. As the heat is absorbed, the process fluid is chilled. ✐ � High/Low Pressure Switches: The high/low pressure switches protect the NOTE: The fan cycling switch refrigeration system from unsafe operating levels. The high pressure switch is adjustable when the chill
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TM Specifications: EarthSmart ECM Series Chillers MODEL ECM-0.5 ECM-0.75 B Performance characteristics Capacity* tons 0.41 0.70 ✝ Compressor Hp {kW} 0.5 {0.37} 0.75 {0.56} Pump Hp {kW} 0.25 {0.19} 0.5 {0.37} ‡ Chilled water flow gpm {lpm} 0.9 {3.4} 1.7 {6.4} ‡ Chilled water pressure psi {bar} 60 {4.1} 60 {4.1} Reservoir capacity gal {liters} 10 {37.8} 10 {37.8} A Dimensions inches {mm} A - Height 39.7 {1008} 39.7 {1008} B - Width 18.7 {475} 18.7 {475} C - Depth 24.2 {615} 24.2 {615} Process co
