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  1. FB4C models are R-410A Fan Coils designed for installation flexibility. These units are designed to meet the low air leak requirements currently in effect. A TXV is used on FB4C(S,Q)L. This valve is a bleed-through type and adjustable (if necessary). All FB4C fan coils use a multi-tap ECM motor for efficiency.

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  2. This installation guide contains explanations about the safety and standard operating. Before installation and maintenance of Fan coil units , please read safety and warnings and keep guide carefully for installation and maintenance process. Please give!

  3. Refer to the installation manual of the fan coil unit for details on installing the fan coil unit. Be careful not to deform the unit piping by using excessive force when connecting the piping. Deformation of the piping can cause malfunction of the unit. If air, moisture or dust gets in the water circuit, problems may occur.

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  4. the 42C,D,V unit fan coils. Refer to the unit wiring diagram installed on the blower housing or specific manufacturer liter-ature for any other type of factory-mounted controls. See drawings for unit configurations, dimensions, clearances, and pipe connections. Refer

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  5. Ensure that the location is convenient for wiring, piping and drainage. The indoor unit must be installed in such that is free from any obstacles in path of cool air discharge and warm air return, and must allow spreading of air throughout the room (near the center of the room).

  6. Hitachi technical and service documentation for Fan Coil Unit. Find installation and user manuals, catalogs, datasheets, brochures, and other PDF documents.

  7. The supply pipe can supply either hot or cold water to the unit. FWC06-07-08-09B7FV1B. 4-pipe fan coil units have two supply pipes and two return pipes. This allows either hot or cold water to enter the unit which makes it possible to heat and cool different areas of a building at the same time.

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