The appliance has a working thermostat adjustable between 37ºC and 75ºC.
An over temperature cut-out is incorporated within the thermostat which is
designed to operate at 79-84ºC. Should this happen, press the reset button.
Important: Before resetting the over temperature cut-out or altering the
thermostat setting, isolate the electrical supply to the unit before
removing the electrical cover panel. Ensure that the cover panel is
replaced correctly and the retaining screws fitted before re-connecting
the electrical supply.
Commissioning
1. Check that all the requirements under “Installation Requirements” have
been met.
2. Check that all water and electrical connections are correct and tight
3. Check that the expansion vessel pressure is correct – refer to label on
vessel for correct pressure
4. Check that the drain valve on the inlet manifold is closed
5. Open hot water taps
6. Open the cold water supply valve and permit the heater to fill
7. Leave hot taps open until all air has been purged from the system and water
is flowing freely from all outlets
8. Check for leaks and rectify as necessary
9. Check the operation of both the T&P relief valve and the Expansion Relief
Valve to ensure free water flow through the discharge pipe by turning the
knob to the left and holding in the open position
10. Set the thermostat(s) to the desired temperature setting. A water
temperature of approx. 55ºC is recommended for economical operation
while minimising lime-scale deposits and thermal losses.
11. Switch on the electrical supply to the unit. The pilot light will illuminate to
indicate that the elements are operating.
12. During the heating cycle no water should escape to waste from either the
expansion relief or T&P relief valves
13. Allow the heater to reach the selected temperature when the pilot light will
extinguish. Check the water temperature and re-check water connections
adjusting as necessary
14. Pass these instructions to the person responsible for the building
management
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Zip Varipoint III Installation, Maintenance and User Instructions - August 2008
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