EMI Official Air Conditioner Manual: Heat Pumps, Parts List, and Split System Instructions
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NOMINAL CAPACITIES:

CAH/CAHW: 9,000 - 48,000 Btuh CAF/CAF4: 8,000 - 36,000 Btuh

GENERAL STATEMENT

EMI DUCTLESS SPLIT SYSTEM

CASSETTE EVAPORATOR

INSTALLATION MANUAL/OPERATING INSTRUCTIONS

P/N# 240-4235 Rev. 1.6 [1/05]

SPARE PARTS: For ease of identification when ordering spare parts or contacting Enviromaster International LLC about your unit, please quote the model number and serial number. This information can be found on the rating plate attached to your unit.

PRODUCT DESCRIPTION

The EMI Cassette series is available in nominal capacities of 9,000 to 48,000 Btuh in DX refrigeration and reverse cycle heat pump (CAH) or DX with hot water coil (CAHW) ver- sions; also available are two pipe chilled water (CAF) and four pipe chilled and hot water versions (CAF4) in 8,000 to 36,000 Btuh capacities; and, depending on the model, elec- tric heat can also be factory fitted as an option. Designed for low noise levels, easy installation and maintenance and a slimline fascia, all ensure minimum obtrusion into the work- ing environment.

CONTROLS AND COMPONENTS

LOW VOLT TRANSFORMER (Standard): 24 Volt.

IMPORTANT: The information contained in this manual is critical to the correct operation and main- tenance of the EMI cassette and should be read by all persons responsible for the installation, start up and maintenance of the unit.

SAFETY: The equipment has been designed and manufac- tured to meet international safety standards but, like any mechanical/electrical equipment, care must be taken if you are to obtain the best results.

1.Service and maintenance of this equipment should only be carried out by skilled personnel.

2.When working with any air conditioning unit ensure that the electrical disconnect supplying the unit is switched off prior to servicing or repair work and that there is no power to any part of the equipment. In the case of a DX system, both the indoor and outdoor units should be switched off.

3.Also ensure that there are no other power feeds to the unit such as fire alarm circuits, BMS circuits, etc.

4.Electrical installation, start up and maintenance work on this equipment should be undertaken by competent and trained personnel in accordance with local relevant standards and codes of practice.

ELECTRO-MECHANICAL (Standard): Thermostat options are cooling only, cooling and one stage auxiliary heat, cool- ing and one stage mechanical heating (heat pump system) or cooling and two stage heating (heat pump & second stage auxiliary heat). An optional thermostat can be obtained through EMI or your local distributor.

NOTE: Make sure the thermostat is suitable for unit opera- tion (i.e., cooling only, cooling/electric heat, etc.)

MICROPROCESSOR (Optional): A custom designed mi- croprocessor is fitted to the cassette to enable room condi- tions to be maintained at a user defined setpoint. Communi- cation to the controller is by a hand held infrared transmitter, which includes a wall mounting bracket as standard.

The microprocessor allows five operating modes. These modes are - fan only, dry cooling, cooling only, heating only and heating/cooling auto changeover for maximum versatil- ity. A temperature setpoint between 58°F - 90°F can also be selected.

The microprocessor monitors indoor coil temperature and return air temperature. In heat pump units, a 24VAC signal from the condensing unit is also monitored to signal the in- door unit that defrost of the outdoor coil is taking place. This allows the same micro to control both heat pump and cool- ing only units. The receiver contains a self diagnostic fea- ture. When a low indoor coil temperature is detected the cooling action is stopped. If a sensor fails then an alarm is

ENVIROMASTER INTERNATIONAL LLC

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EMI@ENVIROMASTER.COM

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Contents Product Description General StatementControls and Components Positioning Site InstallationCabinet Electrical Data Refrigeration System DX Units Start UP ProceduresEMI Cassette CAH/W, CAF/4 EMI Cassette Mechanical Data Cabinet DimensionsSmall Cabinet EMI Cassette DimensionsLarge Cabinet Medium CabinetInfrared Receiver & Fascia Display Panel Microprocessor ControllerInfrared Transmitter Display IndicatorsHOW to SET the Present Time Setting UP the BUILT-IN Time ClockControl Circuit Checks DX Units Unit Start UP Indoor UnitUnit will not Operate Troubleshooting SectionPossible CAUSES/REMEDIES Water Leaking from UnitNo Cooling Coil FreezeNo Heating Heat Pump Possible CAUSES/REMEDIES Fans will not RUNElectric Overheat Filter Removal and Cleaning MaintenanceFAN Removal Condensate Tray RemovalAppendix a Wiring Charts and Instructions Appendix B Exploded Unit Drawing and Parts List Large Cabinet Appendix C Exploded Unit Drawing and Parts List

WLCA specifications

EMI WLCA, or Electromagnetic Interference Wireless Lightning Control Architecture, represents a groundbreaking evolution in the realm of electromagnetic interference mitigation technologies. Designed to safeguard sensitive electronic systems from the potentially detrimental effects of electromagnetic disturbances, EMI WLCA integrates a host of advanced features and characteristics that empower both industries and consumers.

One of the primary features of EMI WLCA is its ability to operate across various frequencies. This versatility ensures that it can mitigate interference from a wide range of sources, whether they originate from industrial machinery, communication devices, or environmental factors. By effectively filtering out these unwanted signals, the technology facilitates more stable and reliable performance in electronic systems.

At the heart of EMI WLCA lie several state-of-the-art technologies that enhance its efficiency. Adaptive filtering is a key component, allowing the system to dynamically adjust its response based on the detected interference levels. This real-time adjustment capability ensures optimal performance, minimizing lag and improving responsiveness in critical applications, such as aviation, telecommunications, and medical devices.

Another notable characteristic of EMI WLCA is its modular design. This allows for easy integration into existing systems, enabling manufacturers to incorporate the technology without necessitating an overhaul of their current infrastructure. The modularity also facilitates future upgrades, ensuring that systems can adapt to changing standards and emerging interferences.

In addition to its impressive technical specifications, EMI WLCA is designed with user-friendliness in mind. Comprehensive monitoring tools provide users with insightful data on interference levels and the effectiveness of the mitigation strategies being employed. This transparency not only aids in troubleshooting but also enhances overall system performance by allowing users to make informed adjustments as needed.

Moreover, EMI WLCA is built to meet stringent regulatory compliance standards. This ensures its broad applicability across various sectors, including aerospace, automotive, and consumer electronics. As technology continues to advance, the RF environment becomes increasingly crowded, making solutions like EMI WLCA not only desirable but essential.

In conclusion, EMI WLCA stands out as a significant advancement in electromagnetic interference control technology. With its adaptive filtering capabilities, modular design, user-friendly monitoring tools, and compliance with industry regulations, EMI WLCA promises to enhance the reliability and performance of electronic systems across diverse applications. As the demand for interference-resistant technology grows, innovations like EMI WLCA will undoubtedly play a critical role in shaping the future of electronic design and implementation.
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