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9. Connections to the middle and bottom of the Solar Tank
•
The middle Solar tank connection (Point G)
Solar hot water in - has a non-return valve fitted.
Connection is made via 15mm W62 brass fitting.
•
Please note the purge valve which must be
used to remove all the air from the solar
collectors and the system during the initial fill
with water. Failure to bleed air from this point
will prevent the solar return water from operating
the non return valve. All air must be expelled at
this point and only water be present, otherwise
the solar water will not circulate between the
solar collectors and the tank.
WARNING –
water expelled from this point can be
extremely hot and precautions must be
taken.
•
The Solar tank temperature receptacle (Point U)
is where the sensor cable from the Solar Control
unit (front ‘TANK’ socket marked blue) is placed.
Push the sensor head in as far as it will go. This
is the point where the tank temperature is
measured .
•
The mains cold water in at the bottom of the
Solar tank connection (H) is made by screwing
the complete assembly into the tank.
Connection to the pipe is made via the W63
bent brass fitting.
•
The solar recycle connection (solar flow) is
connected from Point P on the tank to the inlet
to the solar pump (Point D).
G
U
H
P
U
10. The completed Solar Hot Water Tank assembly
•
The Tank and Solar control kit must be
positioned close together
•
The Solar tank must sit on firm and level ground
•
If the solar tank is to be installed inside a
building, then solar tank must sit within a ‘safe
tray’ which meets the drainage requirements of
AS/NZS 3500.4
Electric Boost:
Solar hot water is piped directly to the domestic
hot water taps (via a Tempering valve). An
electrical connection must be made from the
Solar Hot Water tank to a dedicated electrical
heater supply to provide a ‘boost’ at times when
necessary. (connected to a dedicated electrical
supply for this purpose - (point O)
Electrical cable entry is via an entry provided
to the side of the access cover
Gas Boost:
A separate Gas Boost heater must be installed
on the hot water outlet from the solar tank. For
maximum operational efficiency the Gas Boost
heater (incorporating the Solar Transfer Valve
(STV) should be mounted as close as possible to
the solar tank to minimise the effect of ‘dead leg’
water (water that goes cold in the pipes between
the Tank and Gas Boost heater) from
unnecessarily activating the Gas boost heater.
A Tempering valve is also required to be fitted,
prior to the hot water going to the domestic hot
water taps.
Electrical connection for Boost (Point O)
Cable
Entry
point
Part/n EST315
Safe
Tray
