Rheem 311 Series Service Manual download pdf (Page 33)

CONNECTIONS – PLUMBING

GAS INLET

The gas connection is made through the grommet in the left hand side panel to

the gas control. The pipe work must be cleared of foreign matter before

connection and purged before attempting to light the water heater. An isolation

valve and disconnection union must be installed to allow servicing and removal

of the water heater.

Note: Refer to the Gas Installations Standard AS 5601 or AS/NZS 5601.1 for

the correct method of sizing the gas supply pipe to the water heater. The pipe

size selection must take into account the gas input of this water heater (refer to

table on page 28) as well as all of the other gas appliances in the premises.

Warning: Always isolate the water heater before pressure testing the gas

supply system. Disconnect the water heater after the isolating cock to prevent

the risk of serious damage to the gas control. The Rheem warranty does not

cover damage of any nature resulting from failure to observe this precaution.

Refer to rating label for gas types and pressures.

Caution: Care is necessary when tightening fittings into the gas valve. The gas

valve casting may crack if the fittings are over tightened. Cracked valve

castings are not covered under the Rheem warranty. Damaged valves must be

replaced.

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Rheem 311 Series Service Manual Page 33