Expansion Tank; Underfl Oor Heating System (Plastic Pipes); Gas Supply Connection - Rinnai E75CN Installation & Servicing Instructions Manual

6.2

Expansion tank

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NOTICE
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NOTICE
6.3 Underfl oor heating system (plastic pipes)
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NOTICE
6.4

Gas supply connection

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DANGER
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WARNING
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DANGER
The E-Series boilers are equipped with an internal expansion tank.
The tank of the E75CN and E75CP is positioned inside the boiler casing. This
expansion tank has a pre-charge pressure of 14.5 PSI / 1 Bar and a capacity of 2.1
gallon / 8 litres.
The tank of the E110CN and E110CP is positioned directly beneath the boiler and
together with the casing forms a single entity with the boiler.
The casing can be removed by pulling forwards. The expansion tank has a pre-charge
pressure of 14.5 PSI / 1 Bar and a capacity of 3.1 gallon / 12 litres.
If a larger capacity expansion tank is needed for the installation a standard expansion
vessel should be fi tted additionally.
In that case choose an expansion tank volume, of which the summary 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. The extra 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.
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 warranty in the event of failure
to regard the regulations pertaining to plastic underfl oor heating pipes.
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 boilers are built to run on Natural Gas or Propane 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 or a green label with Propane 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: resume with chapter 6.4.1
Propane gas: resume with chapter 6.4.2
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