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4.4 GAS CONNECTION
4.5 SIZING AND CONNECTION SUITABILITY
POWER CORD
GAS INLET SUPPLY
GAS VALVE
CAUTION
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WARNING
Conversion of this unit from natural gas to propane (LPG) or propane (LPG) to natural gas
cannot be done in the field. Contact your supplier to get the correct unit for your gas type.
!
Check the gas type label to make sure that the unit was built for the type of gas you will be using,
and that the gas inlet pressure is within the appropriate range. (Please refer to p.4.)
Gas pressure below this specified range for the water heater and/or insufficient gas volume will
adversely affect performance.
Inlet gas pressure must not exceed the maximum values; gas pressure above the specified range
will cause dangerous operating conditions and damage to the unit.
Until testing of the main gas line supply pressure is completed, ensure the gas line to the water
heater is disconnected to avoid any damage to the water heater.
Size the gas piping according to AS/NZS5601 installation code for the correct pipe sizing for the
water heater.
Always use approved connectors to connect the unit to the gas line. Always purge the gas line of
any debris before connecting to the water heater.
Install a manual gas shut-off valve between the water heater and the gas supply line.
The regulator is preset at the factory. It is computer controlled and is not to be adjusted by any
person other than a licensed professional.
When the gas connections are completed, perform a gas leak test either by applying soapy water
to all gas fittings and observing for bubbles or by using a gas leak detection device.
Turn off the electric power to the water heater and manual gas valve located on the outside of the
unit before beginning gas connection.
Confirm the position of the gas inlet. Do not connect water line to gas inlet.
NOTE: M20 UNIT SHOWN
IN EXAMPLE
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