Water Quality - iHeat Roof Mount Solar Hot Water Systems Installation Manual

SECTION 1

Water Quality

Water in direct flow through iHeat Hot Water
system must meet the following requirements.
Additional Roof Support Requirement
Refer to the Technical Specifications section for the weight of the water heater. It is advisable that the
weight of the water heater be braced to a load bearing wall. The tank will need to span a minimum of
2 roof trusses no more than 900mm apart. If in any doubt of the construction or the condition of the
roof, obtain advice from a registered builder or structural engineer. The installer must ensure that the
structural integrity of the roof is not compromised by the installation of the solar water heater.
Selecting System Location
iHeat collectors should be installed as close as possible to True North. If True North is not an option,
the next most suitable direction is within 45 degrees either side of true north. If there is a necessity
to install iHeat close coupled in a direction outside the 45 degrees mentioned above, iHeat Hot Water
systems with derive sufficient solar contribution to comply with government requirements provided
the following conditions are observed:
• The direction of the iHeat Closed Coupled system is no more than 90° either side of
True North
• The pitch of the roof or surface upon which the iHeat Close Coupled system is installed
is no greater than 28°. Important: Hooping irons must be used for installs above 25° .
The inclination of the iHeat Close Coupled system should ideally be the same as the latitude angle of
the site.
Inclinations within 20° of the latitude angle of the site will only reduce efficiency by approximately 5%.
Most roofs within Australia have a slope of between 20° and 25° and provide an appropriately angled
mounting surface. To ensure operation of the system the inclination SHALL NOT be less than 10°. For
maximum performance the iHeat Close Coupled system should be located in a position clear from
shade all year round and free from obstructions.
City Latitude City
Adelaide 35° S
Alice Springs 24° S
Brisbane 27° S
Broken Hill 31° S
Installation Manual - Roof Mount Solar Hot Water - August 2017
Latitude
Cairns 17° S
Canberra 35° S
Darwin 12° S
Geraldton 28° S
Total hardness
Total dissolved solids
Electrical conductivity 850 μS/cm
Chloride
Magnesium
Sodium
pH
City Latitude
Hobart 42° S
Mildura 34° S
Melbourne 38° S
Perth 32° S
200 mg/litre or p.p.m
600 mg/litre or p.p.m
250 mg/litre or p.p.m
10 mg/litre or p.p.m
150 mg/litre or p.p.m
6.5 to Max 8.5.
City Latitude
Port Hedland 20° S
Rock Hampton 24° S
Sydney 34° S
Townsville 19° S
1300 829 118
i-heat.com.au