Plumbing Africa August 2018 - Page 67

PROJECT 65 1 2 3 4 1. By Ilana Koegelenberg 2. The project was started in May 2013 and completed in July 2015. It was tackled by Michael Carter of Techbutler. CLIENT BRIEF The client’s brief was to provide a warm and clean environment in the house, with individual room control as well as a low-energy house. built hot water room. The two units, both using R410a refrigerant, a 16kW 500ℓ HPSU compact, and an 8kW 300ℓ HPSU compact unit, were installed in series to provide 800ℓ of hot water and 350m 2 of underfloor water heating. The larger 16kW unit has an electrical top-up element to heat the domestic hot water system from 50°C to the required 65°C. SYSTEM DESCRIPTION Two Rotex Gmbh HPSU integrated heat pumps for domestic hot water as well as underfloor water heating radiant units were installed in a purpose- The underfloor water heating was designed in accordance with the EN 1264 European Energy Saving Directive for underfloor water heating and a full piping layout was supplied by Rotex. www.plumbingafrica.co.za 3. 4. The two indoor thermal stores part of the HPSU units. The user-friendly interface sit uated on the indoor thermal stores allows for easy control. The in-wall distribution manifold hidden inside one of the closets in the house. The electrical distribution board for the heat pumps. Continued on page 67 >> August 2018 Volume 24 I Number 6