Rheem 743 series Owner's Manual And Installation Instructions page 20

INSTALLATION
Typical under-bench installation
Mains Water Connection
COLD WATER INLET
The pipe work must be clear of foreign matter before connection and purged before
attempting to operate the boiling water unit. All olive compression fittings must use
brass or copper olives. Use thread sealing tape or approved thread sealant on all
fittings.
It is mandatory for a union isolation valve to be fitted on the cold water supply
line to the boiling water unit for removal for servicing.
The internal pressure limiting valve incorporates a dual non-return valve
therefore extra non-return valves are not required for installation.
A good quality Watermarked flexible inlet pipe must be installed between the union
isolation valve and inlet connector on the unit, suitably long enough to allow the
boiling water unit to be moved to the front of the cupboard so as to overhang the
cupboard front by 50mm.
Note: A non-Watermarked flexible inlet pipe will deteriorate and affect the water
quality entering the unit. Ensure that all flexible inlet pipes are Watermarked and
hydrolysis resistant. Note this is mandatory in Australia.
Connect the cold water supply to the fitting marked "Inlet" on the boiling water unit.
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Rheem New Zealand Ltd 743 Series BWU Document #: 318489B