iHeat Roof Mount Solar Hot Water Systems Manuel d'installation - Page 11

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SECTION 2

Insulation of Hot and Cold arm assembly

Using the supplied solar rated and UV stable insulation, cover all exposed ¾ copper pipe and fittings

to ensure maximum efficiency.

Thermosiphon Arrestor Valve

The thermosiphon arrestor valve must be installed to prevent the system from over-heating. It shall

be installed with the flow direction towards the inlet of the panels.

Hot and Cold Water Connections

All plumbing connections must be performed by a licensed plumber in accordance with local authority

regulations.

Cold Water Connection

The cold water inlet connection to the solar storage tank is 3/4 FI. All pipes and valves must be

insulated

as per the current AS/NZ 3500.4 Section 8.2. The cold water inlet requires the following valve train

please refer to system diagram page for correct installation

•

Approved isolating/non return valve

•

500 kPa Pressure Reduction Valve (PRV) valve

•

700 kPa Expansion Control Valve (ECV)

Hot Water Connection

The hot water outlet from the solar tank is ¾ inch FI. All hot water pipes must be insulated by UV

stable & appropriately rated insulation.

Filling and commissioning the solar system

1. Turn on the cold water supply to the tank and open a hot water tap preferably laundry tap without

filter as existing sediment may partially block pre-existing water saving devices.

2. Leave tap open until all air is bled, then turn off hot water tap.

3. Activate PTR Valve (Pressure relief valve) to ensure system is fully bled of all air

4. Once the system is fully pressurised with water, thoroughly check all fittings, connections and

pipework for water leaks

Installation Manual - Roof Mount Solar Hot Water - August 2017

1300 829 118

i-heat.com.au