In broad layman’s terms, any gas appliance that is not stock standard – as in a small boiler or an infinity, a heater, or any appliance that is purpose built and not listed on the Energy safety website as an approved appliance – requires sign off from a Worksafe endorsed “APPROVED PRACTIONER”. This person has been endorsed by Worksafe as having the necessary technical expertise and competence to inspect test and certify the safety of certain gas appliances.
It is important for safety and insurance purposes that this is done correctly by a suitably endorsed “APPROVED PRACTIONER“ (not just a certifying gas fitter).
We are Approved Practitioners.
Gas appliances in NZ need to be constructed in accordance with NZS5266.
One means of compliance with this code and the one most commonly used is AS3814