If you are noticing that you get hot water in all of your other showers and from the rest of your faucets and appliances and you ve ruled out the rsl and a faulty hot water heater and you re still experiencing uncomfortably cold showers your shower mixing valve could be faulty.
Rinnai tankless water heater cold shower.
This is a common phenomenon with tankless water heaters.
360 technology is a built in pump and the circ logic technology needed all in one.
Select rinnai tankless water heaters can provide faster hot water by recirculating the water through your plumbing systems so hot water is always available whenever you need it.
Problems with tankless water heater temperature.
Tankless water heaters are not immune to problems.
When the need for hot water arises by turning on a shower washing machine dishwasher or faucet cold water flows into the rinnai tankless water heater from the inlet pipe at the bottom of the heater.
Circ logic technology allows you to purchase the pump separately for installation.
In all cases tankless water heaters must be property vented.
However a tankless heater takes some time to heat up the exchanger and during that time.
Your shower mixing valve is faulty.
The small tank water heater provides you with hot water while your tankless unit s heat exchanger warms up.
There is some water which remains stored in warm condition at the mouth of the faucet or other outlets which means when someone runs the tap or the shower he will receive some hot water instantly.
Turns cold when house demand is low.
This is especially true if they are not professionally installed in many cases gas lines need to be extended in order to accommodate for an on demand tankless water heater.
Rinnai heater puts out water which fluctuates temperatures from very hot to very cold but will not hold a moderate temperature throughout shower.
If you get that hot water cold water hot water surprise consult a professional to see if you should combine your tankless unit with a mini tank water heater.
In the case of successive showers using a tankless water heater you may notice that the second person taking bath in the same shower just after the first person has taken the shower will be exposed to warm water initially and then he will be blasted with cold water from the heater till it gets heated up again slowly.
As the name suggests the shower mixing valve is responsible for.
Several claim they didn t even touch the temp and that the shower started out hot then turned ice cold after abo.