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Rinnai HWS max water temp???

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  1. #1
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    Default Rinnai HWS max water temp???

    Hi,

    I have an exterior Infinity 26 continous HWS with a max temp of 50 degrees. It has only 2 controllers (bathroom & laundry/kitchen) and Im wondering if I can adjust the kitchen so that max temp is 55 degrees.

    There is no mention of max temp on the front of the HWS. Do I need to call a plumber or can I change it myself somehow?

  2. #2
    1K Club Member Master Splinter's Avatar
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    Default

    See if this matches
    http://www.rinnaisales.co.nz/tradesm...e_info/678.pdf

    If not, google "Rinnai dip switch"
    DIY electrical wiring to AS/NZS3000 - details here - http://goo.gl/9d33T (PDF file)

  3. #3
    1K Club Member jago's Avatar
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    The regs say that the outlet must regulated so that it does not exceed 50c and I would be reluctant to fiddle with it, or at least change it before selling renting etc.

  4. #4
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    Quote Originally Posted by jago View Post
    The regs say that the outlet must regulated so that it does not exceed 50c and I would be reluctant to fiddle with it, or at least change it before selling renting etc.
    I rang Rinnai today and gave them the model/serial number and it seems my model is one that can be adjusted so I just have to get a plumber out, either mine or theirs, yay!

  5. #5
    1K Club Member jago's Avatar
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    Good news but the point I was making is the code specifies a max of 50c to stop scalds and if you knowingly adjust above this, you have a system that is not upto code and liability becomes yours for accidents.

  6. #6
    gasfixeruperer
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    Rinnai installation instructions now advise that it is possible to turn the temperature up to a max of 55 degrees to cope with the typical heat loss through the pipes so that you indeed do get 50 degrees at the tap. The instructions state " Installer please read to avoid customer complaints".

    If you dont have these instructions to DIY then get a proper service agent or gas specialist to make the adjustments. They should also have a thermometer to check the temp at the tap. Some plumbers may know what they are doing but most have probably never seen the insides of a Rinnai. Good luck

  7. #7
    1K Club Member jago's Avatar
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    Cool Peeeeda that makes sense

  8. #8
    Old Chippy - 4K Club Member
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    In any case even with instantaneous you can install tempering devices with higher ranges at different outlets and run the HWS at a higher temp (but that's a costly choice to retrofit - best to set at the 55 - will be less than that at most if not all outlets (depending on ambient temps around pipework and level of pipe insulation).
    Advice from me on this forum is general and for guidance based on information given by the member posing the question. Not to be used in place of professional advice from people appropriately qualified in the relevant field. All structural work must be approved and constructed to the BCA or other relevant standards by suitably licensed persons. The person doing the work and reading my advice accepts responsibility for ensuring the work done accords with the applicable law.

  9. #9
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    Default Rinnai Infinity

    The outlet temp of Continuous flow HWS can be adjusted by setting the dip switches, but I am not going to divulge how!!!

    Because it is illegal in NSW to deliver hot water to a bath room at a temp greater than 50 deg C

    If the heater is set to deliver hot water above 50 Deg a tempering valve must by law, be installed on the supply line to all bath room fixtures.

    If hotter supply is required at other fixtures, two hot water delivery lines need to be installed one from the outlet of the tempering valve to bath rooms and a second direct supply to kitchen and laundry.

    IMO this is a job for a licenced plumber only, not for the DIY expert. Incorrect installation can result in serious burns to the end user.

    Hence the legislation to control Hot water installation.

    G

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