D2 Mechanical
D2.01 Heating and Cooling
Heating and Cooling Considerations Checklist:
Section Summary
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All condenser units be located, subject to HCA approval in order of preference: (1) Roof plant deck (2) Basement Car park / Under croft carpark. (3) Apartment balconies All condenser locations to be confirmed with HCA. Reverse-cycle split system air conditioning to living areas (Victoria, South Australia, West Australia & Tasmania). Design consideration for screening of condensers to create non-climbing safety barrier measures on balconies. Provide ceiling fans to bedrooms (ensure ceilings facilitate safe installations). Electric panel heaters to bedrooms. (South Australia, Victoria & Tasmania). Consider condenser locations and where possible do not locate adjacent to bedrooms. The specification of the split systems should be either Mitsubishi or Daikin. Ensure any tundish locations are co-ordinated fully and concealed within joinery if connecting into kitchen or bathroom wastes.
Provide heating cooling and ventilation systems suitable for the required function in the geographic location of the project. Provide systems that maximise life expectancy and consider balance of quality, cost, ongoing, maintenance and minimise energy consumption. Many of our residents prefer operable windows and cross ventilation where possible as it is more cost e ective and therefore a high priority for HCA dwellings. All areas of the Development not served adequately by means of natural ventilation must be provided with mechanical ventilation equipment that achieves in excess of the minimum fresh air and change of air requirements of the Building Code of Australia and relevant Australian Standards.
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Table 06: Heats and Cooling Design Criteria Checklist
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Ambient Conditions *
Summer 34.5 DB, 22°C WB
Full solar load No solar load
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Winter 2°C
80% RH
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Internal Conditions
Cooling 24°C DB+/- 2°C Heating 22°C DB nominal
50%RH normal
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Condensate pumps are not acceptable.
Heat Load
To be determined based on room use and extent of lights.
All reverse-cycle split systems must have a minimum warranty period of 5 years.
Ventilation air quantity
Outside air and exhaust quantities to be in accordance with requirements of Australian Standard AS1668.2-2012 and NCC.
High Density Heating and Cooling Considerations Checklist:
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Where multistorey developments only provide split systems for heating and cooling HCA will accept this so long as natural cross ventilation opportunities are maximised in lieu of relying on mechanical ventilation and all operable windows must have flyscreens.
Apartment outside air ventilation airflow rates will be in accordance with NCC requirements
Apartment outside air ventilation requirements will be meet via openable windows and not by mechanical ventilation systems.
Low Density Heating & Cooling Considerations Checklist:
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Ensure condenser units are concealed from view. If condensers are located at roof level, consider screening to obscure direct line of sight.
The Architect is to ensure opening sizes satisfy the minimum NCC ventilation requirements.
SDA Heating-Cooling Considerations Checklist:
Noise
Maximum permissible noise levels will be in accordance with relevant Aust. Standard, NCC and project Acoustic Consultant.
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Reverse-cycle split system air conditioning to living areas and bedrooms. Heating-cooling system is compatible with assistive technologies used for automation (Bluetooth, Wifi and/or Z-Wave compatibility).
Glazing
Glass type and characteristics will be as per ESD consultant advice.
Building Envelope
Building envelope characteristics will be as per ESD consultant advice.
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* Design conditions to be taken from AIRAH (Australian Institute of Refrigeration Air Conditioning and Heating) comfort design Manual for conditions at Projects locality.
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