The Kent chooses R32 multi-split HVAC system

By Pieter-Jacques Nel (MBA, BEng Mech) HVAC&R mechanical engineer: Metraclark

One of the largest commercial, industrial and retail property investment and development groups in South Africa, chose Sinclair’s R32 multi-split HVAC systems as the accompanying product to their environmentally conscious development, The Kent.

The exterior of the Kent. All images supplied by Metraclark.

As a leading global refrigeration technological company, Beijer Ref, takes pride in sourcing and distributing brands that not only offer highly efficient performance, but also embody sustainable technological solutions in line with reduced environmental impact initiatives. 

12kw single phase Sinclairmulti-split condenser (single condenser connecting to multiple indoor/ evaporator units).

Upholding ambitious sustainability targets would soon yield to the adoption of R32 as the next-generation refrigerant as part of Beijer Ref’s exhaustive portfolio offering. The advanced thermodynamic properties of R32 ensures efficient and effective heat transfer which does not only contribute to improved HVAC system performance (i.e. high coefficient of performance), but also reduces the overall footprint of the equipment which contributes towards long term energy savings. As a key differentiator, R32 boasts an ozone depletion potential of zero, and serves as a more environmentally friendly alternative with a global warming potential (GWP) of 675. These properties have proven R32 a practical and attractive option for air-conditioning and heat pump systems.

Recognising R32 future market potential, Sinclair, a wholly owned subsidiary of Beijer Ref, introduced R32 HVAC split, a multi-splits system, to the European market with phenomenal adoption. Metraclark, the largest wholesaler in Southern-Africa (subsidiary of Beijer Ref Africa) officially launched Sinclair as part of its main HVAC portfolio in February 2022

The Kent is a seven-storey residential building situated in La Lucia KwaZulu-Natal (Durban) area. It consists of eight ‘New-York styled’ apartments per floor, while the overall design encapsulates striking modern features while incorporating energy efficiency and sustainability as part of the design philosophy within every step of the build.

The unique topological layouts of each apartment demanded a modular HVAC solution which would ensure ease of final installation, while allowing for custom indoor unit selection based on the internal heat load requirement of each individual living area. With Durban historical temperatures souring up to 38 °C at a relative humidity of 80%, it was estimated that the entire building would require a total of 845kW worth of cooling towards ensuring seamless comfort of its occupants. Not only would Sinclair multi-split HVAC systems seamlessly marry the client’s energy performance requirements, but also facilitate ease of installation while occupying a minimal footprint.

Sinclair wired controller with wi-fi function for ducted split (controls the indoor units temperature set point).

9 000btu indoor ducted unit diffuser housing: return air extracted from the bottom grill and supplied through the front facing horizontal grill to ensure cooling comfort.

Primary HVAC contractor: Boris Badenhorst from Truholdings Group (www.truholdingsgroup.com).

Project Info

1. La Lucia, Durban North, KwaZulu-Natal.
2. https://kentlalucia.co.za/
3. Nine apartments per floor and seven floors for 63 apartments
   in total

1. 1. Type A 2 BED – 12kw Sinclair Multi Split CDU. 24000 &
      x2 9000BTU Duct        
   2. Type D 1 BED – 7.1kw Sinclair Multi Split CDU. 18000 &  9000BTU Duct
   3. Type B 2 BED – 8kw Sinclair Multi Split CDU. X3 9000BTU Duct 
   4. Type E 1 BED – 7.1kw Sinclair Multi Split CDU. 18000 &     9000BTU Duct              
   5. Type C 2 BED – 10.5kw Sinclair Multi Split CDU. 18000 & x2 9000BTU Du            
   6. Type F 1 BED – 6.1kw Sinclair Multi Split CDU. 12000 &     9000BTU Duct