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INSTALLATION – SOLAR STORAGE TANK
CLEARANCE REQUIREMENTS
Note: * If these horizontal distances cannot be achieved, AS/NZS 5601.1 states an equivalent horizontal
distance measured diagonally from the nearest discharge point of the flue terminal to the opening may be
deemed to comply. Check with the local regulator.
SAFE TRAY
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4
and all local codes and regulatory authority requirements. AS/NZS 3500.4 also has particular requirements
when a safe tray must be installed.
MAINS WATER SUPPLY
Where the mains water supply pressure 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 the
diagram
on page 39).
Model
Relief valve setting
Expansion control valve setting *
Max. mains supply pressure
With expansion control valve
Without expansion control valve
Min. mains supply pressure **
* Expansion control valve not supplied with the water heater.
** In-series gas booster only – solar storage tank has no minimum mains supply pressure requirements.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply and a minimum water supply pressure of 120 kPa
at the water heater cannot be achieved, then a pressure pump system must be installed to allow the in-series
gas booster to achieve its rated flow and performance. Care must be taken to avoid air locks. The cold water
line from the supply tank should be adequately sized and fitted with a full flow gate valve or ball valve.
Consideration must be given to any minimum water supply requirements of another type of in-series booster
water heater.
Notes:
It is not recommended to install the in-series gas booster with a low pressure water supply.
A minimum water supply pressure of 120 kPa is required to achieve the rated flow and performance of an
874820 or 874826 gas booster water heater.
If sludge or foreign matter is present in the water supply, it is recommended a suitable filter be incorporated
in the cold water line to the water heater.
The in-series gas booster is not suitable for connection to bore water or spring water unless a water
treatment device is fitted.
"Water Supplies"
Refer to
RHEEM 596160
on page 14 for further information on water chemistry.
160
1000 kPa
850 kPa
680 kPa
800 kPa
120 kPa
24
cold water connection
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