Safety Valve; Low Water Cut Off; Boiler Expansion Tank; Underfl Oor Heating System (Plastic Pipes) - Rinnai E50C Installation & Servicing Instructions Manual

6.1.3
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NOTICE
6.1.4
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NOTICE
6.2
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NOTICE
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NOTICE
6.3
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NOTICE
6.4
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DANGER
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WARNING
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DANGER
20

Safety valve

An ASME 30 psi pressure relief valve is included with the boiler and must be
fi tted before any shut off valve in the system.

Low water cut off

The Rinnai E50C boiler has a factory installed pressure switch type Low Water
Cut Off (LWCO). Check your local codes to see if a Low Water Cut Off is required
(LWCO) and if this device conforms to local code.
The Low water cut off is not serviceable.

Boiler expansion tank

Choose an expansion tank volume, of which is geared to the installation's water
capacity. The pre-charge pressure depends on the installation height above the
expansion tank. Fit the expansion tank into the return pipe as close as possible to
the boiler return connection. The expansion tank should be sourced locally. Please
refer to the expansion tank manufacturer for further information.
Fill the expansion tank to a minimum of 14.5 psi.
The boiler cannot be used with an open type expansion tank.
Underfl oor heating system (plastic pipes)
When using oxygen-permeable pipes, e. g. for underfl oor heating systems, the system
must be separated using plate heat exchangers.
No recourse can be made to the terms of the limited warranty in the event of
failure to observe the regulations pertaining to plastic underfl oor heating pipes.

Gas supply connection

Only work on gas lines if you are licensed for such work.
If these instructions are not followed exactly, a fi re or explosion may result
causing property damage, personal injury or death.
Rinnai wall mounted E boilers are built to run on Natural Gas. The gas type the
boiler is suitable for is indicated on the packaging and on the boiler by a blue
label with Natural Gas and on the identifi cation plate on the boiler.
First check the identifi cation plate on the boiler for the suitable gas type.
Do not use the boiler for another type of gas than indicated on the identifi cation
plate of the boiler. This will cause improper functioning and can damage the
boiler.
Natural gas:
When propane gas is desired, the boiler can be converted to propane gas by means
of a conversion kit. Rinnai Part number:803000014.
resume with chapter 6.4.1