Solahart Streamline Gas Owner's Manual page 32

CONNECTIONS – PLUMBING
This water heater has either a plastic dip tube or fitting liner in
the inlet and outlet fittings (see diagram). These must be in
place for the water heater to function properly. Do not remove
or damage them by using heat nearby. They will be pushed
into the correct position as the fitting is screwed in.
The solar cold pipe connects to the DN15 pipe protruding
from the side of the air duct on the solar storage tank. Use the
compression fitting supplied. The solar hot pipe connects to
the raised inlet located above the cold water inlet and below
the hot water outlet (refer to "Assembly of Solar Hot and Solar
Cold Pipe Connections" diagram on page 28).
PIPE SIZES
To achieve true mains pressure operation, the cold water line to the water heater should be the same
size or bigger than the hot water line from the water heater.
The pipe sizing for hot water supply systems should be carried out by persons competent to do so,
choosing the most suitable pipe size for each individual application. Reference to the technical
specifications of the water heater and local regulatory authority requirements must be made.
RELIEF VALVE
The temperature pressure relief valve is shipped behind the front cover of the solar storage tank. This
valve must be fitted before the water heater is operated. Before fitting the relief valve, make sure the
probe has not been bent. Seal the thread with Teflon tape - never hemp. Make sure the tape does not
hang over the end of the thread.
Screw the valve into the correct opening (refer to the installation diagram on page 27) leaving the valve
outlet pointing downwards. Do not use a wrench on the valve body - use the spanner flats provided.
RELIEF VALVE DRAIN
A copper drain line must be fitted to the relief valve to carry the discharge clear of the water heater.
Connect the drain line to the relief valve using a disconnection union. The pipe work from the relief
valve to the drain should be as short as possible and fall all the way from the water heater with no
restrictions. It should have no more than three right angle bends in it. Use DN15 pipe.
The outlet of the drain line must be in such a position that flow out of the pipe can be easily seen (refer
to AS/NZS 3500.4) - but arranged so hot water discharge will not cause injury, damage or nuisance.
The drain line must discharge at an outlet or air break not more than 9 metres from the relief valve.
In locations where water pipes are prone to freezing, the drain line must be insulated and not exceed
300 mm in length. In this instance, the drain line is to discharge into a tundish through an air gap of
between 75 mm and 150 mm.
Warning: As the function of the temperature pressure relief valve on this water heater is to
discharge high temperature water under certain conditions, it is strongly recommended the pipe work
downstream of the relief valve be capable of carrying water exceeding 93°C. Failure to observe this
precaution may result in damage to pipe work and property.
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