AquaMAX G270VE Series - Manual (Page 26)

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Natural Gas Models: Remove yellow warning label from gas control after
connecting gas supply line.
Propane Gas Models: A gas regulator is supplied with the water heater
and must be installed externally between the gas isolation valve and jacket
of the water heater. Refer to gas flow directional arrow on regulator body to
ensure it is installed in the correct orientation. The regulator has been
factory preset to obtain a burner pressure of approximately 2.7kPa.
Warning: Always isolate the water heater before pressure testing the
gas supply system. Disconnect water heater after isolating valve to prevent
the risk of serious damage to the gas control. The Aquamax warranty does
not cover damage of any nature resulting from failure to observe this
precaution. Refer to water heaters rating label for gas pressures.
Warning: Care is necessary when tightening fittings into gas control as
the gas control casting may crack if fittings are over tightened. Cracked
control castings are not covered under the Aquamax warranty. A damaged
gas control must be replaced.
Water Inlet & Outlet Connections
An approved isolation valve and non return valve must be installed in the
supply line to the water heater.
A pressure limiting valve and expansion control valve may also be required
(for PLV requirements refer to ‘Water Supplies’ on page 23 and for ECV
requirements refer to ‘Expansion Control Valve’ on page 26).
A disconnection union must always be provided at the cold water inlet and
hot water outlet of the water heater to allow for water heater disconnection.