EMI manual CAC Cassette Controls and Components, Preparation for Installation

Models: CAC

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CAC CASSETTE CONTROLS AND COMPONENTS

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Electromechanical Operation (Stan- dard): An optional thermostat can be ob- tained through EMI or your local distributor.

NOTE: make sure the thermostat is suitable for unit operation (i.e., cool- ing only, cooling/electric heat, etc.)

Filters: Metal framed filters are fitted. These are reusable and may be vacuum cleaned.

Condensate pump: A condensate pump is designed to carry water out of the unit. The pump is fixed to a mounting bracket which can be withdrawn from the side of the chassis and incorporates an inspection hole to allow a visual check of the pump during operation. A float switch is fitted to stop the cooling action (shut off the compressor) should the pump be- come blocked or fail.

IMPORTANT: Total lift for this pump is 36” or less.

Air vanes: Air outlet vanes are manu- ally adjustable on the 9-12K units or driven by an electric motor on all other model units. Where fitted, the motorized air vanes can be set to auto sweep or can be stopped in a fixed position.

Heating: The cassette may be fitted with electric heaters which are equipped with over-temperature limit switches.

Fresh air connection: fresh air may be introduced to the unit by the addition of ducts connected to the fresh air knockouts on the Cassette case. It is usually advised that the fresh air volume is approximately 7-10% of the unit’s published maximum air flow.

The cassette is best installed in new con- struction or existing construction with a sus- pended or false ceiling with enough clear- ance to accommodate concealing the piping and electrical connections to the unit.

PREPARATION FOR INSTALLATION

Unpacking: The cassette fascia and main chassis are packaged together for increased protection.

Remove the banding straps and lift the cardboard lid.

Fascia is packed in bubble wrap and on top of the chassis (fascia is not at- tached to the chassis for shipping).

Cardboard template is between the chassis and the fascia (DO NOT throw template away with packaging!).

Lift the fascia and template from the box and set aside.

Remove the Cassette chassis from the box utilizing the four corner brackets for lifting. DO NOT use the drain or re- frigerant connections for lifting.

In order to protect the fascia from dirt and damage, it should be returned to the box until it is ready to be installed.

Blanking off: When branch ducting is to be used, two polystyrene pieces for blanking off fascia openings are Included with the fascia packing. Up to two oppos- ing sides may be blanked off.

DO NOT throw the two polystyrene blanking off pieces out with packaging!

CAC Cassette Evaporator

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EMI manual CAC Cassette Controls and Components, Preparation for Installation