Connections - Plumbing - Solahart Streamline Owner's Manual

All plumbing work must be carried out by a qualified person and in accordance with the requirements of the
Standard AS/NZS 3500.4, and all local codes and regulatory authority requirements. In New Zealand, the
installation must conform with Clause G12 of the New Zealand Building Code.
Note: The solar storage tank of a solar water heater should not be installed as part of a circulated hot water
flow and return system in a building. The benefits of solar gain will be significantly reduced and energy
gained from the sun lost through the pipe work. If a circulated flow and return system is required, it is
necessary to bypass the solar water heater and install a secondary water heater connected to the hot water
flow and return line and supplied from the solar water heater. Refer to
Return System"
on page 23.
CONNECTION SIZES
Hot water connection: Rp 3/4.
Cold water connection: Rp 3/4.
Solar hot (from collector) connection: DN15 compression fitting.
Solar cold (to collector) connection: DN15 compression fitting.
Temperature Pressure Relief valve connection: Rp 1/2.
Solar circuit pressure relief valve connection: G 1/2.
WATER INLET AND OUTLET
All pipe work must be cleared of foreign matter before
connection and purged before attempting to operate the
water heater. All olive compression fittings must use brass
or copper olives. Use thread sealing tape or approved
thread sealant on all fittings.
An isolation valve and non return valve must be installed
on the cold water line to the water heater. An acceptable
arrangement is shown in the diagram. Refer also to
Water Delivery" on page 22 and to
on page 20. The solar hot and solar cold pipe connections
are shown on page 34.
A disconnection union must always be provided at the cold
water inlet and hot water outlet on the water heater to
allow for disconnection of the water heater.
This solar storage tank 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.
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.
CONNECTIONS – PLUMBING
"Mains Water Supply"
32
"Circulated Hot Water Flow and
    
       
"Hot