Coral first past the post with Daikin’s ‘invisible’ air conditioning

Coral Hatfield

Non-food retail


Coral’s new 78m2 betting shop in the pedestrianised Town Centre of Hatfield, Hertfordshire, had no suitable outdoor location for a conventional air conditioning condensing unit. It was typical of many retail locations where a VRV system is needed for comfort cooling and heating – but cannot be accommodated due to space limitations, architectural considerations or planning constraints. Daikin’s VRV i-series was the perfect heating and cooling solution because it overcomes these problems by mounting all components indoors with only a grille visible outside – and even that can be hidden from public view.


The ‘invisible’ i-series splits the ‘outdoor’ unit in two – a small-footprint compressor unit just 701mm high and needing 600x554mm of floorspace, so it can be located in a store room or back office, and a separate heat exchanger unit, typically mounted in a ceiling void and venting to the exterior through a grille. The i-series system can be connected to a maximum of 10 indoor units from the VRV IV range  as well as air handling units and Biddle air curtains.  The i-series is faster and more cost-effective to install – and easy to service as all components are easily reached.

Coral_Kit list.jpg

VRV i-series condenser

Roundflow cassette (with self-cleaning décor panel)

Wall-mounted fan coil


Coral’s 5hp i-series has nominal capacity of 14kW in heating and cooling, COP of 3.8 and EER of 3.20. Both the heat exchanger unit and the compressor unit operate at just 47dBa, so they cause minimal disturbance indoors. The compressor serves a wall-mounted fan coil unit in the staff area while in the customer area there are two self-cleaning Roundflow cassettes. These have an automatic daily cleaning cycle to prevent dust accumulations on décor panels. Trialled over a year at a Coral branch in Wolverhampton, the self-cleaning panel led to 49% operating cost savings.

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