Specifications

25
INSTALLATION – SOLAR STORAGE TANK
SOLAR WATER HEATER STORAGE TANK LOCATION
The solar storage tank is suitable for either outdoor or indoor installation. If an in-series gas booster is
mounted to the solar storage tank, then the installation must be outdoors. Whether located outdoor or indoor,
the solar storage tank should be installed close to the most frequently used outlet and its position chosen
with safety and service in mind.
Consideration must also be given to the position of the solar storage
tank in relation to the solar collector(s). There are limitations on the
maximum length of the solar hot and solar cold pipes between the
solar storage tank and the solar collector(s). Refer to “Solar
Collector Location” on page 37 and to “Pipe Lengths” on page 39.
Clearance must be allowed for servicing of the solar storage tank.
The solar storage tank must be accessible without the use of a
ladder or scaffold. Make sure the temperature pressure relief valve
lever is accessible and the front cover, thermostat and booster
heating unit can be removed for service.
You must be able to read the information on the rating plate. If
possible leave headroom of one water heater height so the anode
can be inspected or replaced. Remember you may have to remove
the entire solar storage tank later for servicing.
It is recommended the solar storage tank be installed at ground or
floor level and must stand vertically upright. The base of the water
heater is made of corrosion resistant material, and it may be placed
directly in contact with the supporting surface. It is not necessary to
allow for free air circulation under the base of the water heater.
Note: The water heater should not be placed in direct contact with a
concrete surface that is less than two months old and not fully cured
as this may attack the metal coating of the water heater base. A
moisture barrier should be used between the two surfaces in this
instance.
Remember all local authorities have regulations about putting water heaters into roof spaces.
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 diagram on
page 42).
Model
160
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
Min. mains supply pressure
200 kPa
* Expansion control valve not supplied with the water heater.