Rheem Electric Domestic Water Heater - Manual (Page 23)

CONNECTIONS – PLUMBING
CONNECTION SIZES
Rheemglas, Optima RheemPlus
• Hot water connection: RP ¾/20 G ¾ B
• Cold water connection: RP ¾/20 G ¾ B
• Relief valve connection: RP ½/15 RP ½/15
All plumbing work must be carried out by a qualified person and in accordance
with the Plumbing Standard AS/NZS 3500.4 and local authority requirements.
WATER INLET AND OUTLET
All pipe work must be cleared of foreign matter before connection and purged
before attempting to operate the water heater. All olive compression fittings
must use brass or copper olives. Use thread sealing tape or approved thread
sealant on all fittings.
An isolation valve and non-return
valve must be installed on the cold
water line to the water heater. An
acceptable arrangement is shown in
the diagram. Refer also to
“Hot
Water Delivery” on page 17 and to
“Mains Water Supply” on page 16.
A disconnection union must always
be provided at the cold water inlet
and hot water outlet on the water
heater to allow for disconnection of
the water heater.
This water heater has either a
plastic dip tube or fitting liner in the
inlet and outlet fittings (see
diagram). These must be in place
for the water heater to function
properly. Do not remove or damage
them by using heat nearby. They
will be pushed into the correct
position as the fitting is screwed in.
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