Domestic hot water 150F , set at 110 on thermostat
Hello,
Recently had my hydronic heating system with combiboiler repaired/fixed.
The water coming out from faucet and shower is 140-150.
The thermostat next to the boiler tank is set at 110 (before was 130, but I thought that would decrease the temp)
Any fix? Set at 100 My boiler Entire system, yes I know the expansion tank should be hung with an air scoop, the tech \"mickey moused " the setup 😞 Is there any easy way to chnage that gauge
Kobefan: Quick, permanent fix is a tempering/mixing valve. installed on water heater line to faucets and showers prevents dangerous over/high temperature water.
Most have dial adjustments to automatically that mix cold water with hot to limit temperature to say 120F.
Doug and I don't always agree with each other but I do here.
Here's your problem. You have what looks like a boiler that supplies DHW and heating hot water. You only want 120-130f for DHW but the boiler needs to raise the temperature to supply heating hot water. That is a common problem when the boiler supplies the DHW. Many people will have a separate storage tank installed that will supply correct temperature DHW regardless of boiler temperature.
The other method is to use a tempering valve like Doug mentioned. It takes the boiler water and automatically mixes it with incoming cold water to maintain the set temperature.
What am I missing here. Where is the DHW tank or flat plate. Where is the DHW coming from?
Show pictures where the DHW is coming from. A tank aquastat should keep the DHW closer than what you are claiming. I am in agreement of the mixing valve but still concerned where DHW is actually coming from.
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[color=#333333]I just bought an apartment and the builder had hydronic radiant installed throughout. 95% of the apartment is 4" white oak; two bathrooms are tile. The boiler is the Navient [url=https://www.navieninc.com/products/npe-150s/downloads]NPE-150S.[/url][/color]
[color=#333333]Whats a good temperature to set the boiler at? I believe its currently at 130F, which I think is a little high for wood flooring? Additionally, someone in the building told me the installer (no clue who), said we shouldn't set the thermostat above 70F. In my mind, why does that matter? Isn't it the temp coming from the boiler thats more important for not messing up the wood?[/color]
01-24-23, 05:43 PM
