Clyde Quay

The Challenge

To provide heating and cooling as well as ventilation to a complex which consists of 76 high end apartments, a gymnasium, business centre, theatre, and several high end retail tenancies/restaurants.

The Solution

Due to Clyde Quay Wharfs’ highly corrosive environment careful consideration was given to products that could withstand the exposure to sea salt. It made perfect sense for the consultant to specify Mitsubishi Electric’s “BS” marine grade protection to the outdoor units. This protection is applied during the outdoor units manufacturing process to ensure all components are 100% protected before the outdoor unit is assembled.

In order to maximise apartment size an underground car park was built, which partly sits below the mean sea level of Wellington harbour. The entire site is split into eight cores which is air conditioned by nine R2 series simultaneous heating and cooling VRF systems.

Tempered fresh air for code compliance is supplied to the apartments via nine EPI air handling units complete with DX refrigerant coils. These are then connected to nine Y series City Multi outdoor units which provide efficient reverse cycle pre-heating or pre-cooling of the air.

The apartments are individually owned, vary in floor size, and have different aspects to the sun, so it was essential that accurate power proportioning of the common outdoor units was monitored for each tenant. A Mitsubishi Electric AG150A central controller complete with three expansion controllers and a TG2000A PC was installed. Not only does this automatically proportion the power of the outdoors for each tenant, but also gives the building manager site wide control over the air conditioning, and a common place where filter signs or faults can be monitored.