Native BACnet

SysCoil speaks BACnet natively at the cassette controller — no gateway required to integrate with a commercial BMS. Modbus and KNX also supported via standard interface modules. The lowest-friction commercial controls integration in the CleverBloom cooling range.

Zone thermostat

A wall-mounted thermostat per zone reads room temperature and sets cassette fan speed and flow demand. One thermostat can drive multiple cassettes serving the same open-plan zone. Wireless and wired options available depending on the building's controls strategy.

Heat / cool changeover

Reads the heat pump's heat-or-cool changeover signal automatically. In heating, fans assist warm-water output. In cooling, fans assist chilled-water output and the condensate pump activates. One installer-set parameter, no per-season operator intervention.

Fan-speed modulation

EC fans modulate continuously from 0% to 100%. Output tracks room demand linearly — no on/off cycling, no temperature swings, no fan noise unless the room genuinely needs it. Output gives the room what it asks for, at the lowest fan speed that meets demand.

Dehumidify mode

A standalone mode that prioritises moisture removal over temperature reduction. Useful in shoulder seasons when the air is muggy but not hot. Fans run at low speed, chilled water continues to circulate, condensate is captured. Standard inclusion on SysCoil's commercial controller.

Occupancy & CO₂ integration

Optional inputs from occupancy sensors and CO₂ sensors let the cassette ramp up output when a room fills (conference room before a session start) and back down when occupancy drops. Particularly useful for venues with intermittent high-occupancy events.

Schedule programming

Time-of-day temperature programmes per zone. Office floors at 21°C from 8am to 6pm, setback to 18°C overnight. Hotel rooms at 22°C during occupied periods, 18°C during housekeeping mode. Holiday mode drops everything to frost protection.

Condensate alarm

If the condensate pump fails or the drain backs up, an alarm fires before water overflows the tray. The cassette shuts down cooling mode automatically and notifies the BMS — fail-safe protection against ceiling damage in floors below.

Coordinated multi-cassette zoning

Open-plan rooms with multiple cassettes can run in lock-step (single setpoint, all modulate together) or as separate zones (different setpoints for different areas of the same room). Configured at design stage based on the room's thermal patterns.

1 · SysCoil cassette chassis

Galvanised-steel chassis housing the heat exchanger, fan bank, and condensate tray. Typical 600 × 600 mm footprint to match suspended-ceiling grids, with larger 1,200 × 600 mm and 1,200 × 1,200 mm options for higher outputs. Slim 220 mm chassis depth installs in a 240 mm ceiling void while leaving 20 mm service clearance.

2 · Flush grille

Powder-coated aluminium grille sitting flush with the ceiling soffit. One side forms the perforated return air intake while four-way supply slots surround the perimeter. Finished in a standard RAL colour or supplied in bespoke finishes for premium interiors.

3 · Heat exchanger coil

Copper-tube, aluminium-fin heat exchanger sized to the cassette output. Two-row coils serve 2–3 kW units, while three-row versions cover 5–8 kW capacities. A stainless-steel condensate tray sits beneath the coil.

4 · EC fan bank

Brushless electronically commutated fans with continuous 0–100% modulation. Powered directly from a 230 V supply with integrated control electronics. Mounted inside the chassis, drawing return air through the grille and supplying conditioned air through the outlet slots with lower noise than equivalent AC fans.

5 · Condensate tray & pump

Stainless-steel tray captures condensation from the cooling coil. A low-noise condensate pump lifts water up to 3 m vertically and 10 m horizontally to the nearest drain. Float-switch protection activates if the drain backs up.

6 · Native controller

Integrated controller supporting BACnet, Modbus, and KNX communication. Accepts standard 0–10 V or dry-contact thermostat inputs and can operate as a native node on a commercial BMS without proprietary gateways or protocols.

5-year warranty

Systemair UK covers the SysCoil cassette, heat exchanger, chassis, powder-coated finish, and EC fan motors for five years from commissioning. Warranty can be extended to ten years with documented annual servicing. Parts and labour are included.

2-year pump & controller warranty

The condensate pump and onboard controller are covered separately for two years. Both are designed as easily replaceable service items, accessible through the grille opening and typically swapped in under thirty minutes using genuine replacement parts.

25-year design life

Engineered for demanding commercial environments with an expected service life of around twenty-five years. The robust chassis and heat-exchanger assembly are designed for continuous institutional use, supported by long-term parts availability.

Annual filter cleaning

The washable return-air filter should be removed, vacuumed, washed, dried, and reinstalled once a year. Routine cleaning maintains airflow, protects the heat exchanger from dust build-up, and is typically completed in around ten minutes per cassette.

Annual condensate flush

Flush the condensate tray and drain with a mild cleaning solution before each cooling season to prevent biofilm and blockages. Regular maintenance reduces the risk of overflow and helps ensure reliable operation throughout summer.

Heating-system protection

A magnetic filter and corrosion inhibitor are recommended to protect the heat exchanger from sludge and mixed-metal corrosion. These measures help preserve efficiency, extend equipment life, and support long-term warranty conditions on retrofit systems.