Rheem Loline 271 Owner's Manual And Installation Instructions page 37

LATITUDE OF SOME AUSTRALIAN CITIES
Adelaide 35°S
Alice Springs 24°S
Brisbane 27°S
Broken Hill 31°S
PIPE LENGTHS
The solar hot and solar cold pipes between the solar storage tank and the solar collectors shall:

be of bendable grade or hard drawn copper tube.
Annealed or soft copper shall not to be used.

have a continuous fall from the solar collectors to the solar storage tank. Horizontal runs of pipe work are
acceptable and may be installed.
Care must be taken to ensure the pipe work maintains a continuous fall or horizontal runs over the life of
the installation. Pipe work should be fixed at regular intervals to assist in maintaining this requirement.

not exceed the maximum recommended combined lengths as specified in the table.
Maximum recommended total combined pipe length (solar cold + solar hot)
1 or 2 Collectors
Pipe Size
Pipe Length
DN15 40 metres
DN20 NR
For each additional 90° bend, reduce the maximum total pipe length by 0.5 metres.
For each additional metre of pipe length, reduce the number of 90° bends by two.
Note: One 90° elbow is equal to two 90° bends.
NR – not recommended.
Notes:

It is important to connect the solar cold and solar hot pipes to the correct connections at the solar collector
and at the solar storage tank.

The solar cold pipe connects to the bottom of the solar collector array and may connect to either the left
or right hand side. The solar hot pipe must connect to the top of the solar collector array diagonally
opposite to the solar cold pipe connection.

The hot sensor connection is at the solar hot outlet where the solar hot pipe connects to the solar collector.
The solar hot outlet and hot sensor connection is to be the highest point of the system.

"Warning: Plumber – Be Aware"
Refer to
It is essential for these requirements to be followed for the system to operate correctly and efficiently. Solar
pipe work which is oversized, or is too long, or does not have a continuous fall can result in a reduction in
performance or the system not operating effectively.
Cairns 17°S
Canberra 35°S
Darwin 12°S
Geraldton 28°S
and number of 90° bends
90° Bends Pipe Length
20 30 metres
NR 40 metres
on page 38.
INSTALLATION – SOLAR COLLECTORS
Hobart 42°S
Mildura 34°S
Melbourne 38°S
Perth 32°S
3 Collectors
90° Bends
20
20
37
Port Hedland 20°S
Rockhampton 24°S
Sydney 34°S
Townsville 19°S
4 Collectors
Pipe Length 90° Bends
15 metres 20
40 metres 20