Plumbing Connections - Rinnai RIN80E24 Owner's Manual

Pressure & Temperature Relief
Valve
The Pressure & Temperature Relief Valve
is supplied loose with the water heater.
Please refer to the specifications
table on page 6 for the valve ratings.
The PTR valve must be installed directly
into the top socket marked "RELIEF
VALVE". The drain line from this valve
must run in a continuously downward
direction in a frost-free ambient position
with the discharge end left open to
atmosphere permanently.
The PTR Valve is not intended to enable
connection of the water heater to
supplementary energy sources such as
solar panels or slow combustion stoves
(refer AS/NZS 3500.4 for guidance on
these types of installations).
Open the PTR Valve for approximately
10 seconds by lifting the lever on the
valve to ensure water is relieved to waste
through the relief drain pipe. Lower lever
gently and check that it closes correctly.
The PTR Valve must not be tampered
with or removed. The water heater must
not be operated unless this valve is
fitted and in working order.
The PTR Valve should be checked for
adequate performance or replaced at
intervals not exceeding 5 years, or less
in areas where local regulations apply.
Important: The PTR Valve and its
drain outlet pipe must not be sealed or
RIN0421 023335

Plumbing Connections

Rev. A
80L to 400L Electric Storage Water Heaters
blocked. It is normal for the PTR valve
to leak a small amount of water during
heating cycles.
Danger
Failure to operate the relief valve easing
lever at least once every six (6) months
may result in a problem with the water
heater and in some cases the tank may
explode.
Warning: A separate drain line must be
run for this relief valve. It is not permitted
to couple drain lines from relief valves
into a single common drain line.
Note: Brass plugs are supplied with
the water heater to plug off the unused
fittings. Ensure that a sealing material is
applied to the plugs to prevent leaking.
Cold Water Connection
An approved isolating valve, non
return valve, line strainer (optional but
recommended), and union must be
fitted between the supply main and
either of the RP¾/20 sockets marked
"Inlet" at the bottom of the water heater.
All fittings must be approved by the
relevant Authority. See the diagram on
page 4 for details.
Note for S.A. and W.A.: It is a state
requirement that a pressure relief valve
be fitted on the cold water supply line
between the non return valve and the
water heater. See the diagram on page
4 for details.
Owner's Manual
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