SNZ AS/NZS 60335.2.21
Household and similar electrical appliances – Safety – Part 2.21: Particular requirements for storage water heaters
|Publication Date:||25 October 2013|
However immersion heater units intended to be retrofitted in a heat exchange closed water heater are prohibited unless:
- the immersion heater unit has been tested with the tank models and brands listed in the instructions of the immersion heater unit;
- the tank models and brands list the models of the immersion heater units that can be retrofitted.