Goldsborough Building Heat Pumps

Goldman Plumbing carried out a major hot water upgrade at the Goldborough Apartments Building in Darling Harbour Sydney.

The objective of this project was to deliver an energy efficient hot water system, without compromising the reliability of hot water supply to the buildings 538 apartments.

The Engineers at Goldman Plumbing designed a system that primarily operates using heat pump technology. The heat pump installation is supported by a gas fired storage heat exchange system. Should this system be called upon it is designed to boost the heat pump system as required, whilst also having the capacity to supply the entire building with hot water.

A new natural gas connection was installed by Goldman Plumbing from the street gas main to the roof top plant room to run the gas boilers required for the backup system.

The primary heat pump system consisted of 6 x Toyesi 50 kW heat pumps each capable of 60℃ output. A new electrical switchboard was installed to supply power to the new heat pumps, circulation pumps and controllers.

The building’s existing hot water storage tanks were reused. These large volume copper storage tanks were drained, chemically cleaned and inspected for imperfections before being re-instated.

The secondary or back up heating water system consists of 6 x Aleabrax GFX180 storage heat exchangers coupled with 6 x Aleabrax A1K100 condensing natural gas boilers at 100kW each. UV disinfection, a chemical dosing pot and a custom built control panel were also installed to support this system.

Extensive modifications were made to the existing pipework and plant components to allow for the installation of the new systems. All redundant plant and equipment was removed from site.

This complex and logistically challenging project was completed on time and within budget, showcasing Goldman Plumbing’s ability in project delivery.