Rheem 511161 Owner's Manual And Installation Instructions page 39

CYCLONIC OR HIGH WIND AREAS
For an installation of solar collectors on a pitched roof in a cyclonic or high wind area, a suitable With Pitch
frame (available for 2.0m
Distributor for details.
The installation of the solar collectors on a suitable frame, subject to the frame's design criteria not being
exceeded:

may be suitable for installation in geographic locations up to and within Wind Region D (With-Pitch frame
2
for 2.0m collectors only) or up to and within Wind Region C (Variable-Pitch frame), as defined in Volume 2
of the National Construction Code, AS 4055 and AS/NZS 1170.2, or equivalent locations, and

may provide an acceptable method of installation where it is necessary to satisfy the requirements of the
National Construction Code for high wind areas, or equivalent requirements.
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, or annealed copper tube.
Annealed copper tubing shall not be joined using olive compression fittings.
Note: When annealed copper pipe is used in the collector circuit, then a suitable length of bendable grade
or hard drawn copper pipe is to be brazed to the end of the collector circuit pipe work at the connection
points where a copper or brass olive and compression nut is used. This requirement is to ensure there is
minimum risk of pipe movement where the copper or brass olive and compression nut seal the connection
at the fitting, so leaks will not occur.

have a continuous fall from the solar collectors to the solar storage tank. Horizontal runs of pipe work are
acceptable and may be installed as part of an open circuit system.
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.
Particular care is to be taken when annealed copper tube is used to ensure this requirement is met.

not exceed the maximum recommended combined lengths as specified in the table.
Maximum recommended total combined pipe length (solar hot + solar cold)
Pipe Size
DN15
DN20
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.
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.
2
collector only) is required. Contact Rheem or your local Rheem Solar Water Heater
Cairns 17°S
Canberra 35°S
Darwin 12°S
Geraldton 28°S
and number of 90° bends
Pipe Length
40 metres
NR
INSTALLATION – SOLAR COLLECTOR(S)
Hobart 42°S
Mildura 34°S
Melbourne 38°S
Perth 32°S
1 or 2 Collector(s)
90° Bends
NR – not recommended.
39
Port Hedland 20°S
Rockhampton 24°S
Sydney 34°S
Townsville 19°S
20
NR