Duct Work; Electrical Wiring; Wiring Provision - Midea MRCT-075CWN1-D(C) Technical & Service Manual

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz

6. Duct work


All conditioned air ductwork should be insulated to minimize heating and cooling duct losses.
Use a minimum of 2 inches of insulation with a vapor barrier. The outside ductwork must be
weatherproofed between the unit and the building.

When attaching ductwork to a horizontal unit, provide a flexible watertight connection to prevent
noise transmission from the unit to the ducts. The flexible connection must be indoors and made
out of heavy canvas.

Do not draw the canvas taut between the solid ducts.

At least 1m flame resistant layer must be laid at the end of air duct internal surface.

7. Electrical wiring

7.1 Warning

An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in fixed wiring.

The appliance shall be installed in accordance with national wiring regulations.

An all-pole disconnection device which has at least 3mm separation distance in all pole and
a residual current device (RCD) with the rating of above 10mA shall be incorporated in the
fixed wiring according to the national rule.

The appliance shall be installed in accordance with national wiring regulations.

7.2 Wiring provision


The units are internally wired at the factory according to generally accepted electrical
technology.
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MCAC-RTT6S-201701