ABOUT YOUR WATER HEATER
7
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
• Shut down the gas control (refer to “Close Down Procedure” on page 51).
• Close the gas isolation valve at the inlet to the gas control.
• Switch off the electrical supply at the isolating switch to the water heater
(refer to note below).
• Close the cold water isolation valve at the inlet to the water heater.
Note: If there is a risk of freezing conditions, the electrical supply to the solar
control unit should not be switched off unless the solar collectors are drained,
otherwise damage could result (refer to “Freeze Protection” on page 10).
TO TURN ON THE WATER HEATER
• Open the cold water isolation valve fully at the inlet to the water heater.
• If the solar collectors and solar hot and solar cold pipes have been drained,
it will be necessary to bleed the collector circuit (refer to “Bleeding the Solar
Collectors” on page 9).
• If the electrical supply to the water heater has been switched off, switch on
the electrical supply at the isolating switch. The isolating switch must be
switched on for the solar control unit to operate and solar gain to be
achieved.
• Open the gas isolation valve fully at the inlet to the gas control.
• Light the water heater (refer to “Lighting the Water Heater” on page 48).
• Ensure the timer is programmed (refer to “Timer Operation” on page 16).
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on page 34. The water heater must be
installed by an authorised person and the installation must comply with National
Standards AS/NZS 3500.4, AS/NZS 3000, AS 5601 and all local codes and
regulatory authority requirements. In New Zealand, the installation must
conform with the Code of Practice for installation of Gas Appliances NZS 5261
and the New Zealand Building Code. The timer is not weatherproof and must
be installed indoors.