EMI manual CAC Cassette Evaporator Installation Instructions, Electrical Wiring

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CAC CASSETTE EVAPORATOR INSTALLATION INSTRUCTIONS

Electrical Wiring

The standard unit Voltage is 208/230V (60Hz, 1Ph). Check the unit’s rating plate for your models’ electrical requirements.

•The wires should be capable of carry- ing the maximum load current under non-fault conditions at the stipulated Voltages.

•Avoid large Voltage drops on cable runs, particularly in low Voltage wir- ing.

•The correct cable size must be used to ensure a Voltage drop of less than 1 Volt in the control wiring.

•Once the refrigeration pipe work is complete, the electrical supply can be connected.

•Low Volt wiring must be at least 18 awg.

All wiring should be in accordance with the National Electric Code (NEC) and the local building codes.

1.Make sure power is off.

2.Inspect the existing wiring for any de-

ficiencies such as cut or frayed wires. Replace if any such wiring if found.

3.Remove the 4 screws securing the control box cover.

5.The rating plate is located on the outside of control box cover (see Low Volt Inter- connecting Wiring section for location of wiring diagram).

6.Check the unit rating plate for circuit ampacity and breaker or fuse size. Use only HACR type breakers. Select the proper wire for the ampacity rating.

7.Each unit must have a separate branch circuit protected by a fuse or breaker. Refer to the unit rating plate for the proper wire and breaker or fuse size.

8.It is also recommended that a local dis- connect switch be connected within 3’ of the unit. In some areas this may be a code requirement.

4.lide cover p and out to remove.

CAC Cassette Evaporator

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Contents INSTALLATION, Operation and Maintenance Manual Nominal Circuit CapacitiesTo the Installer Safety InstructionsCAC Cassette High Efficiency Evaporator Standard Features Product DescriptionSystem Options Preparation for Installation CAC Cassette Controls and ComponentsSmall Unit Shown Medium Unit ShownLarge Unit PISTON/ORIFICE Installation Instruction CAC Cassette Preparation and PositioningMounting the CAC Cassette Ceiling Evaporator Ceiling openingCAC Cassette Chassis Positioning and Installation MAXCorrect Incorrect Condensate PipingPiping DO’S and DON’TS Pipe Installation Notes Refrigeration PipingUse of a larger line can harm Compressor CAC Cassette Evaporator Fascia Installation Instructions Assembly InstructionsCAC Cassette Evaporator Installation Instructions Electrical WiringMake sure power is off High Volt Electrical Wiring Low Volt Interconnect WiringLOW Voltage Interconnect Wiring Start -UP for Wall Thermostat ControlFigure #4 Refrigerant Processing Important Notes CAC Cassette Evaporator Test Unit Performance Data Sheet Test Unit Performance DataMaintenance and Troubleshooting Procedure Troubleshooting Procedure Power Supply CheckLow Volt Controls Cooling Only UnitsElectric Heat Frequently Asked Questions How long will the fan run?Discharge AIR Volume CAC Performance DataCAC Cassette Dimensions Small Cabinet CAC 9,000 12,000Medium Cabinet CAC 18,000 24,000 Large Cabinet CAC 30,000 36,000 CAC Electrical Specifications CAC Cassette System MatchesT2C, T3C & T4C Top Discharge ALL Product Limited Warranty Enviromaster International LLCEMI’S High Efficiency Product Line High Wall EvaporatorS1C & S1H Single Zone S2C Dual Zone T2C, T3C & T4C 2, 3 & 4 Zone Top Discharge

CAC specifications

EMI CAC, or Electromagnetic Interference Common-mode Current, is a critical concern in electronic device design and operation. It refers to the unwanted electromagnetic energy that can disrupt the normal functioning of electronic circuits, particularly in complex systems. EMI can arise from various sources, including power lines, radio frequency transmitters, and even other components within the same device.

One of the main features of EMI CAC is its dual nature. It can be both a source of interference and a metric to assess the integrity of electronic systems. The impacts of EMI are far-reaching, affecting communication signals, power supply reliability, and overall device performance. As technology progresses and devices become more compact, the likelihood of EMI issues increases, making it essential for engineers to develop effective solutions.

Several technologies are employed to mitigate EMI CAC in electronic systems. Shielding is one of the most common methods, involving the use of conductive materials to block electromagnetic fields. This can take the form of metal enclosures or coatings that prevent the escape of emissions. Another strategy involves the use of filters, such as ferrite beads and capacitors, which can suppress common-mode currents before they enter the sensitive parts of a circuit.

The characteristics of EMI CAC vary depending on several factors, including frequency, amplitude, and the specific environment in which the electronic devices operate. High-frequency EMI is particularly challenging due to its ability to penetrate enclosures and disrupt signals. Additionally, common-mode noise can often appear in differential signals, exacerbating the situation and making detection more difficult.

Achieving EMC (Electromagnetic Compatibility) is a major goal for designers dealing with EMI CAC. This involves not only reducing emissions from devices but also improving their immunity to external sources of interference. Effective grounding techniques and careful layout planning are crucial in minimizing EMI effects.

In summary, EMI CAC represents a significant challenge in modern electronics, with a need for advanced solutions to ensure device performance and reliability. By understanding its features, employing effective technologies for mitigation, and addressing its characteristics, engineers can create robust designs that thrive in the increasingly complex electromagnetic landscape of today’s technological world.
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