Rinnai Smart Cylinder MP indoor stainless steel: Owner & installer guide: 20430-C 03-17 | 15
Storage and delivery temperatures
Storage temperature: Biosafe operation
To meet the New Zealand Building Code requirement
1
to disinfect water for legionella bacteria,
the system will perform heating above 60 °C whenever risk conditions (<60 °C for 21 days) are
detected.
The access cover to the element and thermostat must only be removed by an electrician
or other suitably qualified tradesperson.
Sanitary fixtures delivery temperature
Water temperatures over 55
°
C can cause severe scalds. Local regulations must be considered
regarding temperature limitations of hot water supplied to areas used primarily for personal
hygiene. The temperature is limited to 45
°
C for early childhood centres, schools, nursing
homes or similar facilities and 55
°
C for all other buildings. To comply with these requirements, a
temperature limiting device, such as a tempering or thermostatic mixing valve will be required
on all installations.
Pipe work
It is the installer’s responsibility to adequately size the distribution pipe work in a property to
ensure sufficient performance from all outlet fittings. Water pipe sizing should be performed
in accordance with AS/NZS 3500.4 and/or G12/AS1. Pipe sizing and valve selection must be
performed to allow for the water supply pressure.
A drain off tap or line must be fitted to the inlet of the water heater.
All hot water pipe work should be insulated with polythene foam or equivalent insulation to
optimise performance and energy efficiency.
To prevent damage to the water heater when attaching pipe clips or saddles to the jacket, it is
recommended that self drilling screws with a maximum length of 12 mm are used. If drilling is
required take extreme care not to penetrate the inner cylinder.
WARNING
1
Clause G12.3.9, Acceptable solution G12/AS1 6.14.3
