DAIKIN ROUND FLOW CASSETTE
18 000 BTU of cooling from a panel in the ceiling
The Daikin FCAG50B round flow cassette sits above the ceiling with only its 950 mm square panel showing, and sends air out through 360°. Daikin rates the system at 5.0 kW of cooling (about 17 100 Btu/h) and 6.0 kW of heating.
It comes as a complete system: the FCAG50B indoor unit, an RXM50A8 inverter outdoor unit, the white BYCQ140EW decoration panel and a Madoka wired controller, all running on R32.
This is the size most homes reach for when the living area is open-plan: big enough to carry a lounge, dining table and kitchen as one space, and quiet enough at 27 dBA on low fan to sit under in the evening.
Air from the centre of the room reaches the corners a wall unit leaves warm.
WHERE IT WORKS
Open-plan lounges, small offices and shops
In an open-plan living area a wall unit throws air from one end of the room, and the far end stays warm. A cassette centred over the space sends air out through all four sides of the panel, so the kitchen, the dining table and the lounge are cooled together.
The same holds for a small office of four to six desks, a boutique or a salon. Nothing goes on the walls, so glazing, joinery and display space stay clear.
As a rough guide the 18 000 BTU size suits around 30 to 45 m² with a standard ceiling. A double-volume ceiling, a lot of west-facing glass or a busy shop floor moves you up a size, so send us the room before you order.
CONTROL
Every flap set from a wired controller
Each of the four flaps can be fixed separately from the wired controller, so air can be kept off a desk, a till or a dining table without moving the unit. Five fan speeds plus auto, draught prevention and ceiling soiling prevention come built in.
A Madoka BRC1H52W7 wired controller is included. It adds a weekly timer, set-point limits and home-leave operation, which holds an empty home, office or shop at a set temperature.
A black panel, an auto-cleaning filter panel and panels with presence and floor sensors can be ordered instead of the standard white panel. Ask us for a quote.
OUTDOOR UNIT
An RXM inverter outdoor unit, rated A++
The 18 000 BTU system pairs the cassette with Daikin’s RXM50A8 outdoor unit, from the inverter family Daikin also uses on its wall splits. It runs on a normal single-phase household supply.
Daikin rates the pair at a seasonal efficiency of 6.54 (SEER, A++) in cooling, the highest cooling figure in the round flow range, and 4.30 (SCOP, A+) in heating.
As an inverter it slows down once the room reaches temperature instead of cycling on and off, which keeps the running cost and the noise down through a long summer afternoon.
INSTALLATION AND SERVICE
A built-in drain pump and a slim body
A drain pump is built in as standard and lifts condensate up to 675 mm, so the water can run to a drain well away from the unit.
The indoor unit is 204 mm tall and 840 mm square; below the ceiling, the panel is 950 mm square and 65 mm deep. Filters are reached from below by dropping the intake grille, and self-diagnosis points a technician to a fault.
A cassette has to be installed by a qualified installer who cuts the ceiling opening, hangs the unit from the slab and runs the piping, cabling and drain. Our installers cover the major South African cities and quote separately.
MADE FOR SOUTH AFRICAN POWER
Daikin South Africa stock
The system is supplied through Daikin South Africa for a 220–240 V single-phase supply, so the local Daikin warranty applies and parts come through Daikin’s South African network.
Auto-restart returns the system to its previous settings when the power comes back after load-shedding or an outage.
If you are unsure whether this is the right size, send us the room dimensions, ceiling height and how the space is used, and we will check it.
Daikin FCAG50B specifications
| System | FCAG50B indoor unit, RXM50A8 outdoor unit, BYCQ140EW panel, Madoka BRC1H52W7 controller |
| Cooling capacity | 5.0 kW (about 17 100 Btu/h) |
| Heating capacity | 6.0 kW |
| Seasonal efficiency | SEER 6.54 (A++), SCOP 4.30 (A+) |
| Indoor unit (H × W × D) | 204 × 840 × 840 mm |
| Decoration panel | 950 × 950 mm, 65 mm deep, white |
| Indoor airflow (high, cooling) | 14.6 m³/min |
| Indoor sound pressure (cooling, low / high) | 27 / 31 dBA |
| Air discharge | 360°, four individually controllable flaps, five fan speeds plus auto |
| Drain | Built-in drain pump, 675 mm lift |
| Outdoor unit | RXM50A8, inverter |
| Functions | Draught prevention, ceiling soiling prevention, dry programme, home-leave operation, auto changeover, auto-restart, self-diagnosis |
| Options | Black or auto-cleaning panel, presence and floor sensor panel, Onecta Wi-Fi adaptor, fresh-air intake |
Figures from Daikin’s published data for the FCAG50B with the RXM50A8 outdoor unit. Nominal cooling at 35 °C outside and 27 °C indoors.
How the 18 000 BTU cassette sits against the alternatives
If the 18 000 is borderline for the room, the Daikin round flow cassette 20 000 BTU adds 0.7 kW on the same body. For a single bedroom or study, the Daikin round flow cassette 12 000 BTU is enough.
Where there is no ceiling void, the Daikin Perfera 18 000 BTU wall split is quieter on its lowest fan setting and has Onecta app control built in, and the Daikin Sensira 18 000 BTU is the simpler wall split and costs considerably less. Both throw air from one wall rather than from the centre of the room.
To cool several rooms from one outdoor unit, look at a Daikin multi-split system.
Questions we are asked about the 18 000 BTU cassette
A little under the name. Daikin rates the FCAG50B system at 5.0 kW of cooling, about 17 100 Btu/h. The trade sells the 50 class as 18 000 BTU and every brand rounds the same way, so where you can, compare systems in kW.
As a rough guide, around 30 to 45 m² with a standard ceiling: an open-plan lounge and kitchen, a small office or a shop. A double-volume ceiling or a lot of west-facing glass moves you up a size, so send us the room and how it is used and we will check it.
The indoor unit is 204 mm tall and 840 mm square, so the ceiling void has to be deeper than 204 mm, with room for the hanger rods, piping and drain. Daikin’s installation manual gives the exact clearances, and the installer checks the ceiling on site. Below the ceiling, the panel is 950 mm square and 65 mm deep.
Yes. In a home with a flat ceiling and a void deep enough for the unit, a cassette centred over the room cools more evenly than a wall unit and keeps the walls clear. At 27 dBA on low fan it is quiet enough for a bedroom or living area.
Yes. The system includes the white BYCQ140EW decoration panel and a Madoka BRC1H52W7 wired controller. A black panel, an auto-cleaning filter panel and panels with presence and floor sensors can be ordered instead; ask us for a quote.
The Madoka controller on the wall handles everything day to day. For control away from home, Daikin offers an Onecta Wi-Fi adaptor for the round flow cassette as an extra. Ask us and we will quote the right adaptor for your system.
A drain pump is built in and lifts the water up to 675 mm, so the installer can run the drain to a suitable point rather than relying on a fall from the unit.
Yes. Auto-restart returns it to its previous settings when the power comes back.
No. A cassette has to be installed by a qualified installer, who cuts the ceiling opening, hangs the unit from the slab and runs the piping, cabling and drain. Our installers cover the major South African cities and quote separately.
This is Daikin South Africa stock, so Daikin South Africa’s local warranty applies. If anything goes wrong, you deal with us: we log the claim with Daikin South Africa and follow it up on your behalf.
Why Buy From EcoHub
Daikin Sales Partner (DSP)
We are an official Daikin Sales Partner. Winners of Daikin’s 2024 Summer Campaign, we joined Daikin in Japan in September 2025 for its Osaka Expo seminar and a visit to the Shiga Plant.
Installed by our installers
Experienced installers in all major South African cities, because a Daikin only performs as well as it is installed.
One point of contact
If anything goes wrong, you deal with us. We log and follow up warranty claims with Daikin South Africa on your behalf.
Genuine Daikin South Africa stock
Supplied through Daikin South Africa, so the full local warranty applies.
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