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FAQs

Showing questions from all categories

What dimension is my flue?

  • HD16i - 60/100
  • All other products - 80/125

Link to this question: https://www.rinnaiuk.com/resources/faqs/what-dimension-my-flue

What is the maximum length of the flue run?

  • HD16i - 10m when increased to 80/125
  • Non condensing 13m
  • Condensing 15m
  • Space heaters 7m

Link to this question: https://www.rinnaiuk.com/resources/faqs/what-maximum-length-flue-run

What flue can my appliance use?

Rinnai approved only.

Link to this question: https://www.rinnaiuk.com/resources/faqs/what-flue-can-my-appliance-use

Can I utilise a common flue?

Common flue is only available for condensing appliances and only Rinnai approved common flue systems are permitted. Please contact Rinnai UK for more details.

Link to this question: https://www.rinnaiuk.com/resources/faqs/can-i-utilise-common-flue

Can I install Rinnai products with renewables?

Yes, Rinnai water heaters can be utilised. Contact Rinnai UK for more information.

Link to this question: https://www.rinnaiuk.com/resources/faqs/can-i-install-rinnai-products-renewables

Why won't this space heater fire up (engineer)?

Unplug the plug with the red white and blue cables that is located at the top of the PCB towards the left side.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-wont-space-heater-fire-engineer

Why is the filter light flashing?

Clean lint filter on appliance.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-filter-light-flashing

Why won't the appliance fire up?

Child lock may be on.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-wont-appliance-fire

What warranties come with heaters?

Silver case - 5 Year parts, 1 labour
White case - 3 Year parts, 1 labour

Link to this question: https://www.rinnaiuk.com/resources/faqs/what-warranties-come-heaters

Why can't I find the analyser test point?

Most Rinnai units do not require a test point. Due to the burner technology utilised in the majority of the heaters there is no requirement to conduct combustion analysis. We recommend you check the gas pressures are correct as per MFI's.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-cant-i-find-analyser-test-point

What appliance do I have?

You can find out what appliance you have by looking at the data badge on the left hand side of the appliance. This begins with 'REU'.

Link to this question: https://www.rinnaiuk.com/resources/faqs/what-appliance-do-i-have

How often should my appliance be serviced?

Rinnai UK recommend all appliances are serviced annually.

Link to this question: https://www.rinnaiuk.com/resources/faqs/how-often-should-my-appliance-be-serviced

Where is my nearest service agent for Rinnai appliances?

Provide contact details or website of agents.

Link to this question: https://www.rinnaiuk.com/resources/faqs/where-my-nearest-service-agent-rinnai-appliances

Why will the appliance only fire up when the tap is open (on a hot water recirculation system)?

Possible problem with the recir pump or a passing non-return/check valve. System investigation is required.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-will-appliance-only-fire-when-tap-open-hot-water-recirculation-system

Why is my water not as hot as normal?

This could be the result of a passing TMV on the system. System investigation is required.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-my-water-not-hot-normal

Why is the appliance making banging and clattering noises?

This could be a result of Lime scale build up or incorrect burner pressures set. Check gas pressures as per MFI's, remove heat exchanger thermistor and look for scale deposits. If scale present, flush heat exchanger for 24 hour period with a light acidic solution like white vinegar.

Link to this question: https://www.rinnaiuk.com/resources/faqs/why-appliance-making-banging-and-clattering-noises