The Ceiling cassette units make each served area an independent controlled temperature zone to suit diverse requirements.

Construction

Cases are constructed of galvanized sheet steel with integral fan mounting rails for added strength. Fire resistant insulation is fitted internally to provide both thermal and acoustic insulation. The RAL9010 fascia is constructed of high-impact polystyrene.

Coils

Constructed with seamless copper tubes and headers. The tubes are mechanically expanded into corrugated aluminum fin material for a permanent primary to secondary surface bond. Coils are tested at 25 bar and recommended for maximum operating at 16bar. Coils include manual air vent and water purge valve.

Fan

The backward-curved centrifugal fan is statically and dynamically balanced for quiet operation. Fan impellers are made from fire-retardant plastic for lightweight and corrosion-resistant operation.

EC motor

The unit is using EC motor include driven controls PCB, a constant torque, permanent magnet, EC motor with preliminary 3-speed setting that allow for precise air balancing.

Filtration

Reusable wire framed filters are fitted and may be vacuum cleaned. G4 efficiency HAF filter is as optional.

Condensate pump

A condensate pump is fitted to carry water out of the unit. The pump is fixed to a mounting bracket. The pump can be withdrawn from the bottom after removing the front panel. A float switch is fitted to stop the cooling action, should the pump become blocked or fail.

Louver

Louver vanes are manufactured from ABS to prevent condensation from forming, automatic adjustable and driven by stepping motors on unit.
Fresh air
The fresh air system for cassette unit allows up to 15% of unit airflow (maximum air flow per connection is 100m3/h) as fresh air intake (per connection). Maximum 2 fresh air connections per unit are allowed.

Complete function microprocessor control (iFCU-EC-S1)

The main design features include:
~ 2-pipe,2-pipewithboosterelectricheat,2-pipewithprimaryelectricheat,4-pipewith6wayvalveinstalled.
~ Cool,Heat,Auto,DehumidifierandFanmodes.
~ Sleep,Auto-Fan,DailyTimer,Auto-Restartwithmemoryfunctions.
~ Userfriendlyremotecontrolhandset.
~ Heatandcooltemperatureprotectionsandsafetycutout.
~ 2-wayand3-wayon/offormodulatingvalvecontrol.
~ Wiredwallpadcontroller(optional)
~ Manualcontrolpanelincabinet.
~ Auxiliaryswitchforcoolingandheatingsignal.
~ Occupancy(remoteon/off)contacts/economymodecontacts.
~ OpenModbuscommunicationprotocol.
Variable water flow system
The water flow through the fan coil is controlled by a temperature difference between the flow and return pipework – referred to as Δt, to ensure the correct heat transfer from the water to the air. Constant Δt keep the unit running efficiency and consequently the whole life running costs of the system.

Limited function microprocessor control (iFCU-ECMD-W1)

A 230VAC signal from the thermostat which working power is from R and C or from indoor room to terminal H/M/L supplies power to limited PCB. When any of H/M/L is powered ON or 0~10Vdc input is more than 2.5 Vdc, the stepping motor is working and open the louver at maximum position. When all of H/M/L is powered OFF and 0~10Vdc input is 0 Vdc, the stepping motor will close the louver. The condensate pump will run continuously, as long as coil temperature is less than 15°C. Alarm notification and zone control function are available. 40VA 24vac transformer is equipped with unit, which is used to supply 24Vac power to thermostat and modulating valve.