Have cleaned shower head & water flow is normal, but cannot adjust temperature, which is very hot. Water pressure fine - recently checked when boiler was serviced. Cannot find my shower in your list of products. Please help
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Re: shower too hot
I'm Harvey the Master Plumber.
Your question seems to be how to adjust the temperature of a shower valve?
I'm going to assume this is a single handle faucet. Most are adjustable under the handle. This is the responsibility of the installer but sometimes they forget and you can't get them back. Anyway this requires a little mechanical ability and a few tools.
First be sure to turn off the water to the faucet, then remove the handle (allen wrench or small screw driver). Most have a temp. adjustment ring right there. Simply pull out, rotate and replace. With some you have to remove the sleeve or bonnet under the handle to expose the adjustment fitting. Reasemble and turn on. It is not uncommon to have to do this two or three times before the customer is happy with the setting. The adjustment fittings usually don't have tenp. setting numbers to go by so it might take a few tries.
Feel free contact me again! Please give me a rating here at fixya.com before you sign off Thank you, Harvey your Master Plumber
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It *may* not be a problem with the water heater itself necessarily. When you say "keep adjusting the water temperature when you're taking a shower" I presume you're talking about turning the shower hot/cold knob(s) and not the temp thermostat on the water heater itself.
If so, when it starts to run colder, turn the knob all the way to full hot. Is the water then very hot? If so, the water heater is working fine & doing its job, and the problem is likely to be in the shower faucet mixing valve itself. Sometimes a faulty one will expand the inner seals/cartridge as hot water flows thru it, and starts to (wrongly) restrict the hot water flow, thus causing the constant need to "turn the dial up a notch".
when he soldered the connections on these pipes.. he may have partially blocked the flow with solder inside..if its restricted up to 50% then its a hell of a pressure loss..hot water is always lower in pressure anyway..also take the shower head and dunk in a clr solution it may have calcium deposits inside the small plastic orafices in it..
These unit is design to operate at a specific flow rate and cannot be ajusted if you need to have a warm shower you will need to get a bath remote where you can turn down the temp whenever you need without disrupting the flow rate
I had the EXACT same problem (installed my tankless last winter and worked fine, now this summer it fluctuates, have to turn the shower completely off and then on again to get any hot water and then it only lasts for a couple of minutes!) Argh - it is frustrating!
Here's what I found: the demand for hot water is lower during the summer (hot) months because the "cold" water coming in is already quite warm. You don't need as much hot water to make the shower temp comfortable. SO, my tankless was shutting off due to low flow demand. I've removed the flow restrictor from my shower head and it helped alot but didn't completely solve the prob. Next step is what has been recommended to me by several people but is much more expensive - change the pressure valve on your shower to a temperature valve. Or just wait til winter and it should work ok again :)
Try exchanging the Delta head with one of the other shower heads you are happy with if you haven't already done so. No change in the flow means it's not in the head, and change means it is.
If it is in the head, since you are on a well and not a municiple water supply, you might consider removing the factory install flow controll device located just below the threaded area that mounts to the shower arm. These inserts can be a real bugger on some heads and each one is a little different than the last. The trusty nail often works well.
Your body sprays, I believe, are factory fixed at something like 2.2 gpm and non adjustable.
Also consider for a moment a garden hose with trigger spray head on it. When you squeeze the trigger the water will shoot out a certain maximum distance. If you were to take an ice pick and poke a hole in the hose, that maximum distance will be slightly reduced. The more holes in the hose the less the maximim distance. Correspondingly, the more holes you poke the less distance each hole will squirt because you have the same pressure and volume of water but more exit points.
A monitor has a flow rate of about 6 gpm at 85 psi which is pretty average for shower valves. If your other showers have only one exit point(i.e. one head) and the R1824 has 3 with the same pressure and volume, the garden hose illustration can also explain the volume change as well.
Test: take the shower head off, then run water. If the water can be adjusted to the desired level (hot/cold mix), then the problem is probably in the shower head. Contact the manufacturer of the shower head. If you cannot maintain a good mix, the problem may be in the valve behind the wall or a total house pressure problem---time to get out your wallet and call a plumber.
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,,
more than likely you have some debris near the shower head
take an adjustible wrench( crescent or channel lock wrap a rag around the eustaceon( chrome tube coming out of shower wall srap around tube to protect the chrome hold it firmly with vicegrips or channel locks, take adjustible wrench or chanel locks and remove the chrome nut holding the shower head on to the eustaceon(turn counter cockwise be careful not to drop the tools that wil damage the tile or fiberglass
after removing showerhead
turn on shower to force and debris out and place shwoer head into stream of water to clean out any deposits the head may have some type of screen to strain the water
this should work if the flow has not incresed then there is a need to adjust the flow valve at the control
to reinstall the shower head reverse procedure
if you have any teflon tape wrap it around the threaded portion of the eustaceon