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The 4-way cassette type fan coil unit serves as a terminal device for central air conditioning systems. Designed for ceiling installation, the unit body fits within suspended ceiling cavities, preserving usable floor space. The front panel features a slim, streamlined profile that integrates with various interior ceiling designs. This model operates on a natural gravity drainage principle, eliminating the need for a built-in water pump and associated control circuit board. The unit supports both 2-pipe and 4-pipe system configurations, making it suitable for different commercial and industrial project requirements.
The unit discharges conditioned air through four separate outlet directions, distributing airflow across the room perimeter. This delivery pattern reduces temperature variations between different zones within a single space. Air guide vanes on each outlet receive flocked surface treatment, a design element that minimizes condensation water dripping during cooling operation. The vanes direct airflow along ceiling surfaces before descending into occupied zones.
This cassette fan coil unit relies on gravity for condensate removal rather than a mechanical drain pump. The drainage system requires a minimum 100mm vertical drop from the unit drain outlet to the main drain line. Without a water pump and associated PCB components, the drainage system contains fewer parts susceptible to wear. Condensate flows directly through the drain pan outlet via gravitational force.
Operation is managed through a wired wall controller, which adjusts fan speed and mode settings. The unit chassis includes a dedicated fresh air intake connection, allowing outdoor air to be introduced into the conditioned space. This feature supports ventilation requirements in occupied commercial buildings without requiring separate ductwork modifications.
Parameter | Specification |
|---|---|
Unit Type | 4-Way Cassette Fan Coil Unit |
Drainage Method | Natural Gravity Drain |
Required Drain Drop | 100mm minimum |
System Compatibility | 2-Pipe / 4-Pipe (optional) |
Control Type | Wired Controller |
Fresh Air Intake | Supported (dedicated connection) |
Air Guide Vanes | Flocked surface treatment |
Installation Type | Ceiling Recessed (cassette) |
This fan coil model installs in various commercial and institutional settings. Hotel guest rooms and corridors benefit from the low-profile ceiling design and quiet operational profile. Office buildings and open-plan workspaces use the four-directional output to cover larger floor areas. Hospital wards and outpatient areas require consistent temperature distribution that multi-directional airflow provides. Retail spaces, shopping malls, and research institutions also deploy this unit type for climate control. The recessed cassette format works in spaces with suspended ceiling systems and standard ceiling heights.
Installation requires sufficient ceiling cavity depth to accommodate the unit chassis. The 100mm drain drop requirement must be verified during the planning phase to ensure proper condensate flow. Routine maintenance involves accessing the unit through the removable front panel, allowing filter cleaning and drain pan inspection. Because the drainage system contains no pump mechanism, maintenance procedures focus on drain line patency and pan cleanliness rather than mechanical component servicing.
A 2-pipe system uses a single supply and return line for either chilled or hot water, switching between cooling and heating modes seasonally. A 4-pipe system provides separate chilled water and hot water circuits simultaneously, allowing individual zones to cool or heat independently based on demand.
Natural gravity drainage operates without a mechanical pump, reducing the number of electrical and moving components within the unit. It requires proper slope and vertical drop in the drain piping. Pump-assisted units can drain against gravity but include additional components that may require servicing over time.
Yes, the unit includes a designated fresh air intake port on the chassis. Outdoor air ductwork connects to this port, introducing ventilation air into the supply airstream. The volume of fresh air depends on duct design and external static pressure considerations.
