User manual

Installation & Servicing Instructions Rinnai E-Series

NOTICE

6.1.3 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.

6.1.4 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.

6.2 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.

6.3 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.

6.4 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: resume with chapter 6.4.1

When propane gas is desired, the boiler can be converted to propane gas by means

of a conversion kit. Rinnai Part number:803000014.

NOTICE

DANGER

WARNING

NOTICE