Cold Water Connection; Hot Water Connection - iHeat Roof Mount Solar Hot Water Systems Installation Manual

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