INSTALLATION – SOLAR STORAGE TANK
19
SAFE TRAY
It is a requirement of the National Plumbing
Code AS/NZS
3500.4.2 that for new
installations all water heaters be installed in
a safe tray where in the event of a leak,
property may be damaged. Installation of
such trays must comply with Clause 4.4
and Sub-clauses
1 to
5 of the above
mentioned code.
MAINS WATER SUPPLY
Where the mains water supply exceeds that shown in the table below, an approved
pressure limiting valve is required and should be fitted as shown in the installation
diagram (refer to diagram on page 21).
Model
250, 315, 400 litre
Relief valve setting
1000 kPa
Expansion control valve setting *
850 kPa
Max. mains supply pressure
With expansion control valve
680 kPa
Without expansion control valve
800 kPa
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply, then the bottom of the
supply tank must be at least 1 m above both the solar collectors and the highest hot
water outlet. Take care to avoid air locks. The cold water supply line to the water
heater should be adequately sized and fitted with a full flow gate valve or ball valve.
HOT WATER DELIVERY
This water heater can deliver water at temperatures which can cause scalding. It is
necessary that a temperature limiting device, such as the Rheem Temp-Set, be
fitted between the water heater and the outlets in any ablution area, such as a
bathroom or ensuite, when this water heater is installed, to reduce the risk of
scalding. The installing plumber may have a legal obligation to ensure the
installation of this water heater meets the delivery water temperature requirements
of AS/NZS 3500.4.2 so that scalding water temperatures are not delivered to a
bathroom, ensuite or other ablution area (refer to diagram on page 21).
