iHeat Roof Mount Solar Hot Water Systems Installation Manual - Page 5

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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

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

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