Pipe mount the circulation pump, with valves attached,
at a suitable location in the solar collector flow pipe
as outlined in “Installation of Circulation Pump” of
these instructions. Please refer to the manufacturer’s
instructions for the circulation pump installation details.
Run the circulation pump power cable to the electronic
controller and connect it to the pump terminals specified
in the manufacturer’s instructions for the electronic
controller.
Fit the solar collector return pipe and insulation
between the water outlet of the last solar collector and
the connection marked “solar return” on the hot water
storage tank. Cover the cold temperature sensor with
thermal paste for improved heat conduction. Fit a tee
and sensor immersion sleeve to the cold water inlet of
the tank and insert the cold temperature sensor. Tighten
the gland nut until the sensor cable is sealed firmly.
Run the cold temperature sensor lead to the temperature
differential controller and connect it to the cold
temperature sensor terminals as in the manufacturer’s
instructions for the temperature differential controller.
Ensure the cold temperature sensor lead is not in contact
with the hot water pipes at any point and fasten to
framework with cable ties as necessary.
Connect 15mm copper tube drain lines to the drain
outlets of the ECV and P&TR valves. Drain lines must be
open to atmosphere and slope continuously down to a
visible drain point, preferably over a drain. Drain lines
must be less than 9 metres long, free of restrictions and
other valves and positioned to prevent freezing.
Fit the mains water supply pipe from the mains water
supply to the cold water inlet of the hot water storage
tank and purge before final connection to remove air and
swarf. Fit the hot water supply pipe from the hot water
outlet of the hot water storage tank to the pipe supplying
hot water to the building. A temperature limiting device is
required as outlined in “Water Pipes, Valves and Fittings”
within this section of these instructions.
Connect the power supply wires from the switch board,
as outlined in “Electricity Supply” within this section of
these instructions, directly to the terminal block and
earth tab connections inside the electrical cover of the
hot water storage tank. Use a flexible 20mm conduit and
connect with a 20mm terminator.
The electricity supply for single element heaters can
be either off-peak, extended off-peak or continuous
depending on tariffs available from the local electricity
supply authority. The thermostat should be set at 60°C
in accordance with Australian Standards.
Please refer to the manufacturer’s instructions for the
electric boosted hot water storage tank wiring diag.
& connection details. The installation of the electric
boosted Stratco Solarcore
TM
hot water system is now
complete. Follow the commissioning procedure carefully
to ensure the electric boosted solar hot water heating
system functions correctly.
Thermostats for electric boosted Stratco Solarcore
TM
hot
water heating systems are preset to 60°C in accordance
with plumbing regulations. A temperature limiting
device, such as thermostatic mixing or tempering valves,
must be fitted to limit the hot water temperature to 45°C
or 50°C where the hot water is supplied to areas used for
personal hygiene such as bathrooms and ensuites.
Please refer to AS/NZS3500.4 for temperature limits
for facilities such as child minding centres, schools and
nursing homes.
IMPORTANT NOTE
A hot water non-return valve must be fitted as shown in
Figures 29 & 30 to prevent hot water flowing to the cold
inlet of the tempering valve during stagnation conditions.
Failure to fit this non-return valve can result in excessive
tank noise or scalding when a hot tap is opened during
stagnation conditions.
Installation Procedure
Position and install the solar collectors as outlined
in “Solar Collector Position & Orientation” of these
instructions.
Position and install the electronic controller as outlined in
“Installation of Electronic Controller” of these instructions.
Please refer to the manufacturer’s instructions for the
electronic controller installation and wiring connection
details. Failure to follow the manufacturer’s instructions
may cause failure of the electronic controller and will
void the warranty.
Position the hot water storage tank (and safe tray if
required) as outlined in “Installation of Electric Boosted
Storage Tank” of these instructions. Please refer to the
manufacturer’s instructions for the hot water storage tank
installation details. Failure to follow the manufacturer’s
instructions may cause failure of the hot water storage
tank and will void the warranty.
Fit the Pressure & Temperature Relief (P&TR) valve to
the connection marked “P&TR valve” near the top of the
tank as shown in Figure 30. Use Teflon thread tape and
ensure the tape does not protrude past the end of the
thread to prevent risk of valve blockage. Tighten the
P&TR valve using the spanner flats and leave the valve
outlet pointing down.
Fit the pressure limiting valve (where required), non-
return/isolating valve/strainer, expansion control valve
and pipe tee to the cold water inlet connection at the
bottom of the hot water storage tank. A pressure limiting
valve is required if the water supply pressure exceeds the
specifications for the hot water storage tanks in “Electric
Boosted Vitreous Enamel Storage Tank” .
Fit the solar collector flow pipe and insulation between
the cold water supply pipe tee and the water inlet of the
first solar collector. Fit the non-return valve and flow
regulator to the outlet of the circulation pump.
