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Rinnai MC91Q2A HOT WATER SYSTEM HOW TO USE

HOW TO SET THE HOT WATER TO USE IN BOTH BATHROOMS

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

  • 234 Answers

SOURCE: I have a Rinnai system. Good cold water pressure, little hot.

What type of pipes are install on this heater?

Posted on Mar 13, 2009

gary1121
  • 332 Answers

SOURCE: I need the manual for a Rinnai Infinity 26 hot water system

you can get it off the rinnai web site they have a spot on there to get the internet manuel,, but from what you are saying you may need to adjust the thermostat, or the temp, remember even though you will have endless hot water it still takes the smae amount of timed for the hot water to get to your faucet,, not only that make sure your shower heads aren't holding back to much water pressure, if you don't have enough water going thru the unit it will not stay lit, if will come on and go off, judt to dstisfy the unit,, make sure the filter is clear, on the cold side there is a cap screw if you take it off there is a screen in side you just pull it out and clean it and reinstal it,,

Posted on Jun 27, 2009

  • 3 Answers

SOURCE: Our Rinnai tankless water heater is producing water as hot as pre

Power outage will reset Rinnai unit to that temperature. Read manual for more info.

Posted on Jan 26, 2010

pappapumpdaf
  • 635 Answers

SOURCE: We used to have hot extremely hot water in both

Your check-valve has most likely failed at the switch.
The flow check valve works by opening when you turn the water tap. When it opens it closes a switch which turns on your heating elements. When this switch fails you will still have water flow, but no heat. Titan has parts for this but you will need to call their service Dept.
7cd99f4.gif
or call
Toll free support pesonnel hours (EST): Monday-Friday: 9:00am - 5:00pm
toll_free.gif
They also have an online support operator during normal business hours here
http://www.titanheater.com/livehelp/livehelp.php?department=2

Posted on Mar 24, 2010

Testimonial: "Thank you so Much!!"

senor8
  • 73 Answers

SOURCE: Rinnai Infinity 26 hot water system set to 55

If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :

-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve

The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.

Posted on Aug 01, 2010

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1 Answer

Just replaced all my hoses did everything i needed to work on a heater and all went well until I turned on my breaker and the top of the tank where the wires are connected started to smoke


it definitely needs to dry out when dry you need to test the components --thermostat--the element [s] --if damaged repair or replace most reasons hot water heaters are replaced is because the tank leaks or rusts out --the components are easily replaceable and inexpensive

Oct 28, 2016 | Water Water Heaters

1 Answer

In temperature screen at 49 degrees to back to front t's appear and boiler stops


PDF]Operation and Installation Manual Outdoor Tankless Water ...

https://www.rinnai.us/.../U287-1932(00)_Outdoor_...

Rinnai America Corp.Temperature controlled continuous flow gas hot water system. .... This water heaterwill attempt to provide hot water at the temperature setting even when the ...

Hot water system temperatures and the code ' Plumbing ...

plumbingengineer.com/content/hot-water-system-temperatures-and-code
Feb 1, 2015 - There have also been incidents where the circulating pump stopped ...before it connects back to the cold water inlet to the water heater. .... Is there a maximum temperature limit for domestic water heaters? ... a means to limit the maximum setting at the valve to 120°F (49°C) or ... Some do and some don't.

[PDF]User's Operation Manual - contents - Navien


Dec 25, 2015 | Water Heaters

1 Answer

Why does the water temp delivered from two Visu-temp valves in back to back bathrooms turn lukewarm after about 4 minutes.


personally I would change the temp setting to hotter water .isn't that why we have a cold water valve also to mix you will use less hot in the long run

Jan 15, 2015 | Water Water Heaters

1 Answer

Why does the water temp, delivered from two Visu-temp valves in back to back bathrooms, turn lukewarm in less than 5 minutes.


check the inlet tubes in the water heater suspect you will find it broke near the top of tank

Jan 15, 2015 | Water Water Heaters

1 Answer

Getting really hot water to the kitchen but only tepid hot water into the bathroom and ensuite. Do not need to put on the cold tap at all in the bathrooms but you can't hold your hand under the tap in...


If some taps have really hot and others luke warm, then you might have defective mixing valve, check valve, or crossover on single handled faucet.
http://waterheatertimer.org/Crossover.html

Crossover can also cause stacking event. Stacking could be part of puzzle.
http://waterheatertimer.org/Stacking.html

Once crossover or check valve or mixing valve problem is solved, if you have really hot water to some taps, then turn down thermostat to avoid scalding.
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html

Add a comment for more help.

Jun 13, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

How do I turn it on? I press the "on" button and


The manual says:
http://www.coinwash.com/temp/rinnai.pdf

"For the name of the Authorized Distributor or Installer nearest you, please contact your local HVAC dealer or gas service technician, visit the Rinnai website (www.rinnai.us), call Rinnai at1-800-621-9419 or write to Rinnai, 103 International Drive, Peachtree City, Georgia 30269"

Manual says that the remote is for setting temperature.
When you turn on hot water spigot, tankless water heater will heat the water to the set point temperature.
If water heater is not set up to use remote, then tankless unit will heat to 140 degrees F.
"With the MCC-45-4US remote control installed the water temperature is adjustable from 96
to 180°F. The water temperature cannot be set to a temperature other than 140°F
without the use of the MCC-45-4US remote control unit. If you require a temperature
other than 140°F you must install the MCC-45-4US remote control unit."

"Error messages are displayed on the remote control units, simplifying service calls."

Page 9 of manual shows hot to set temperature using remote.
Water taps must be shut off to set temperature.
Circulating pump must be turned off.
"Simply press the H or C button until desired temperature is displayed"
"green in-use indicator will display"

If your unit is not working, the manual says to contact local plumber.
Fixya has specialists who will talk to you by phone about your problem for a fee.

Dec 18, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

My kids just bought an older home w/a rinnai continuum nc-45-4us. right now their house phone isn't installed, so they can't phone, but they can't turn on hot water. any suggestions


Run through the basic checks
  • Power lead from the heater plugged in a socket turned on.
  • Gas on to house
  • All valves below heater in on position.
  • If they have controllers in the house turn on (key pads marked with Rinnai logo in kitchen or bathrooms usually)
There is a turbine that spins in the heater when a hot tap is run. If the heater has been sat for some time not operating the turbine might have stuck. Run the hot tap and keep it running, using a hammer give the centre pipe connection under the heater a firm hit a few times(not too hard). This might unstick the turbine.

Sep 21, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

Rinnai Infinity 26 hot water system set to 55 degrees with remote temp adjuster. Water only luke warm for showers. Burnner working, water & gas pressure ok. Any thoughts ... Stephen


If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :

-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve

The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.

Jul 09, 2010 | Rinnai Digital Remote Water Heater Control...

2 Answers

We used to have hot extremely hot water in both bathrooms. One day, the water became warm and ultimately cold in one of the bathrooms. Now, the water is also freezing in the bathroom where the water used...


Your check-valve has most likely failed at the switch.
The flow check valve works by opening when you turn the water tap. When it opens it closes a switch which turns on your heating elements. When this switch fails you will still have water flow, but no heat. Titan has parts for this but you will need to call their service Dept.
7cd99f4.gif
or call
Toll free support pesonnel hours (EST): Monday-Friday: 9:00am - 5:00pm
toll_free.gif
They also have an online support operator during normal business hours here
http://www.titanheater.com/livehelp/livehelp.php?department=2

Mar 24, 2010 | TitanNet TITANTANKLESS. COM PRESENTS THE...

1 Answer

Water heather does not com on when water is truned on wide open


when to local dist. got owners manuel which after installing 4 of these uints the person impersonating a plumber took with him. easy to understand tbl shooting. resolved tbl. thanks

Jan 05, 2010 | Noritz Commerical Tankless Water Heater...

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