Page 3715 - Week 12 - Thursday, 13 October 1994
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Policy No. P11 recommends at Clause 6.1 that the thermal environment be maintained within the range 20 C - 24 C for sedentary work and 16 C - 30 C for manual work, while recognising that a degree of flexibility should be exercised in interpreting this recommendation and that individual tolerance of conditions outside the optimal and preferred range will vary according to individual preferences and acclimatisation.
The air conditioning system has been designed to meet the following design conditions, based on the universally accepted standards of the American Society for Heating Refrigeration and Air conditioning Engineers (ASHRAE standards):
Outside design conditions assumed -
Summer 34°C
Winter 0.5°C
Inside comfort design conditions -
Summer 24°C +l- 2°C and 50% relative humidity +/- 20%
Winter 21°C +l- 2°C and 30% relative humidity minimum.
The conditions experienced to which Mr Cornwell refers arise from minor plant failures and system adjustments which are common during the early operational phase of such systems.
The contract conditions are such that H P Horn Pty Ltd are obliged to rectify defects arising from the contract work for a period of 12 months from completion. The company is undertaking their obligations in this regard.
The purpose of this arrangement is to run the air conditioning system through all seasonal cycles and for adjustments to be made to control systems to suit the seasons so that the system is thoroughly proven before the Government takes over the responsibility for maintenance.
With reference to the other parts of the question:
(a) Temperature control can be individually set for any particular zone,
which relates to each separate air handling plant; and
(b) while windows in the building can be opened, it is not recommended
that they be opened while the air conditioning system is operating. The
building management system can be programmed to close down the
individual zone air conditioning system.
3715
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