Our company offers a wide range of air conditioner and heating services for commercial, residential, and industrial clients. Whether it’s routine maintenance, emergency repairs, air conditioner replacement from an existing system or a new air conditioner system installation, we’re here for you.

The Challenge

In the heart of Sydney's fast-growing areas in North West an apartment building with an original air conditioner specification contacted us for the standard split systems. This allows for accurate power consumption recording for accurate charging to each tenant. The issue with this design was that the outdoor units when installed on the balconies of the apartments, and in two towers, they would detract the premium appearance of this site.

The Solution

Using our City Multi VRF (Variable Refrigerant Flow), we designed an alternative system, which reduced the outdoor units needed down to 24 from 96, and they were to be installed on the rooftop. The AE-200 centralised controller has power monitoring, that enables the facility manager to compute power usage for each tenant. The Sub-zone controllers used (PAR-ZC401M) offer two control points, one in the living room and the other from the bedroom.

This state-of-the-art air con system not only offered individual power monitoring option but it doesn’t deviate from the original plan of this building’s architects. This VRF system uses less copper pipe than the standard system thus it reduced installation costs. Wi-Fi and Zone Control gave tenants complete control of their environment.

The Challenge

An upcoming residential building in Brisbane when completed would have 90 stories of which 88 levels are for residential apartments. Since it’s a landmark project, energy and cost efficient, reliable air conditioner system which can offer tenants year-round comfort was important for the client. Use of the typical air-cooled VRFs on this project might have required huge plant space and sizeable amounts of pipework for the refrigerant in risers that result in increased volumes of refrigerant. The client also needed an accurate way to allocate air conditioner power usage costs for each tenant.

The Solution

We used our Water Cooled VRF 2-pipe Heat condensing systems that offer concurrent heating and cooling using water as a heat rejection source which differs from the conventional air-cooled systems.

Since water is used in the condensing unit and it does not produce radiant heat into the nearby area, the Water Cooled VRF condenser units were built in small plant rooms for each level. This reduced floor space usage and provided more floor space for the tenants use. The Water Cooled VRF plant needed space to house a cooling tower, pump set-up and heat exchanger with only 2 pipes going up the risers.

Using our heat recovery system, we were able to offer more cost saving opportunities to our client since it uses less pipework as well as connection points as compared to the 3-pipe systems.

Since multiple apartments were to be served by two Water Cooled VRF condenser units for each level, the AE-200E central controller was used in breaking up the whole condensing unit power consumption against each indoor unit connected. This allowed for the accurate charging for each apartment for air conditioning use.

The Challenge

One of the oldest hotels in Brisbane had a major make-over and relaunched as a 30 storey Hotel. It’s previous set-up had hotel rooms on lower levels and upper levels were used for office space. Now that the entire building would be for hotel rooms with an existent chilled water system, it meant the whole system needed to be revamped completely to suit hotel use.

Since modifying the existent chilled water system meant putting the project above budget, a different solution was necessary. Also, the client wanted to let hotel guests control all facilities in their rooms using a smartphone.

The Solution

The option we went with was to use our Water Cooled VRF technology that utilises water for heat rejection which differs from the regular air-cooled systems.

Using the previous chiller’s system water circuit, with additional features from our VRF condensing units (additional cooling plant space wasn’t needed), condensing units were placed in small plant rooms that occupied minimal floor space thus offering more floor space for hotel use. Additionally, our 2-pipe condensing unit was used to provide simultaneous cooling and heating when needed for added comfort all year-round to hotel guests.

Also, to have our VRF systems working with smart devices to control hotel room facilities, our control engineers provided BACnet BMS adapters which were then programmed by the BMS Company. The MSB was also installed with our central controllers which permitted for central monitoring in case of faults.

The Challenge

The building location presented us with unique challenges since the building height was restricted, something that our mechanical engineers needed to overcome. The developers wished to maximise on room numbers considering the building’s height and footprint. Also, the client insisted on getting an air conditioner system with high COP that allowed each room to cool or heat when needed.

Additionally, they needed an integrated head-end that can allow common areas and all rooms to be monitored or controlled from one location. This control system was also to monitor C02 levels, control exhaust fans, fresh air fans, kitchen exhaust fans, and control the outside air pre-conditioner’s status depending on ambient temperatures.

The Solution

Our Heat Recovery VRF system was used since it fulfilled and even surpassed the specified requirements. With an existing chilled water system, the needed ceiling space restricted the construction to seven levels. The patented two-pipe condensing system used indoor units with a low profile, allowing the designer to reduce the ceiling space and in turn making room for the eighth level.

For each room temperature control, the TG2000 centralised controller was used and it allows for 2000 devices and indoor units to be controlled and monitored. Digital output and input interfaces were constructed to control fans as well as similar equipment. Furthermore, we installed analogue Input controllers for monitoring CO2 levels and ambient conditions thus meeting the control requirements.

Also, the VRF system allows for arranged installation that helped meet the hand over deadline since each floor was independently commissioned meaning, it was completed one after the other. Levels 1 to 3 were fully functional and occupied as the remaining floors were still being completed.