Question about Rinnai Heating & Cooling

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Is there a way to use a remote thermostat on a REH-20 fb-p rinnai heater?

Just want to know if you can install a remote thermostat on this heater?

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  • Contributor
  • 33 Answers

No you may find yourself in trouble with your insurance co if you alter the manufacturers appliance which has approved by a regulating body

Posted on Feb 02, 2015

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

The Marv
  • 72 Answers

SOURCE: Heater goes off

Possibly A bad thermocoupler. It is the part that looks like a stiff solid copper wire with on end sticking in the flame of the pilot light and is a safety feature if the pilot goes out it starts to cool and the resistance changes back you the module and the module shuts the gas off. I have seen these go intermediately faulty in waterheaters and do just what you described.

Posted on Jan 08, 2007

Therinnaiguy
  • 1420 Answers

SOURCE: Rinnai 1004 - Temp on thermostat reads 10 deg cooler than actual, keeps running

Behind the unit near the floor level, is a yellow wire with a black bulb at the end. This is the actual sensor for returning air. If there is cool air infiltrating the area where it is located, it will keep the unit running until the return air reaches temperature. You could also have a bad sensor but highly unlikely. Make sure there is no air infiltration influencing the sensor. Also, you can unclip the sensor and pull out a few more inches of wire to locate it higher up away from the floor. Tie it up with a wire tie.

Rinnai it testing a remote thermostat but as of yet, there is no plans to offer one.

Posted on Nov 26, 2007

Therinnaiguy
  • 1420 Answers

SOURCE: I need an installation manual for a Rinnai

go to rinnai.us and look under Library.

Posted on Dec 13, 2009

SOURCE: Pilot light will not stay lite?

For some reason it seems the safety protection is activated? Perhaps a faulty thermocouple? Usually that anyway. Or electronics have failed.

Posted on Jan 27, 2010

  • 30 Answers

SOURCE: converting Rinnai REH-25-N to LP

Typically, an unvented heater or gas log cannot be converted, mostly for safety reasons and it is usually cost prohibitive. Some newer heaters come with both Natural Gas and Propane components and have to be set up one way or the either.
It would be better to sell your old heater and get one with the proper gas type.

Posted on Mar 04, 2010

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1 Answer

Pilot lite will not stay on when I release the igniter pressure knob REH-18-N wall heater!


IS there gas? YES ok. So if you can get the pilot lit, but when you let up on the button it goes out. Few things to check. On some heaters the manf. install a safety switch to drop the pilot out if its not venting or if its over heating.

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1 Answer

Can model no. REH-20-P be changed to natural gas?


Since it's a Rinnai Vent-Free LP Gas Heater .. No, it can not be converted to Natural Gas. No Vent-free Gas Heating Appliance can be converted from one gas type to another. It's not just Rinnai.

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1 Answer

Need pilot light assembly for Rinnai gas heater model #REH-25-P


Unfortunately, Rinnai only sells repair parts through their authorized dealers. Contact the dealer you purchased it from. If you are not the original owner of the home/heater, you can go to Rinnai's website and search for a dealer near you. http://www.rinnai.us/direct-vent-wall-furnaces/

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Father-in-law has a Rinnai REH-20D-N model and needs two parts: CP-80037-31 and REH19D-20. Where can I get parts?????


Rinnai, the manufacturer can help you. Go to http://www.rinnai.us/ for more info and contact information.

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1 Answer

I have a mod. REH-18-N 005843 ventless heater (gas) can I change it to porpane? How safe is in a reck room area?


you will need a conversion kit from natural gas to LPG. For room sizing you will need to look in the manual

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1 Answer

Need an igniter


My local Ace Hardeware carries many ignitors - otherwise a Rinnai dealer will have one.

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Converting Rinnai REH-25-N to LP


Typically, an unvented heater or gas log cannot be converted, mostly for safety reasons and it is usually cost prohibitive. Some newer heaters come with both Natural Gas and Propane components and have to be set up one way or the either.
It would be better to sell your old heater and get one with the proper gas type.

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