AquaMAX G270VE Series - Manual (Page 33)

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Leave this guide with the householder or responsible officer upon
completion of the installation and after commissioning.
Warning: DO NOT leave this guide inside the water heater as it may
interfere with the safe operation of the water heater or ignite when the
water heater is turned on.
To Turn OFF the Water Heater
Sometimes it is necessary to turn off the water heater after installation and
commissioning. This may be required on a building site or where the
premises are vacant. To turn off the water heater refer to ‘Shut Down
Procedure’ on page 8.
Testing Inlet Gas Pressure
The inlet gas pressure (gas supply pressure) to the water heater must be
checked as part of the commissioning procedure. The inlet gas pressure
must be checked with all other gas appliances in the premises operating
(burners alight). The minimum gas pressure is 1.13 kPa for natural gas and
2.75 kPa (±5% tolerance) for propane gas. The maximum gas pressure is
3.5 kPa for both gas types.
If the gas pressure is below the minimum for the relevant gas type, it may
indicate the gas supply meter or the gas line to the water heater is
undersized.
If the gas pressure is above the maximum for the relevant gas type, a gas
regulator will need to be installed on the gas line to the water heater.
To check inlet gas pressure: