Does anyone know what temperature is normal for an EPH radiator?
Posted by SoftMost8202@reddit | AskUK | View on Reddit | 7 comments
I've moved into a new home and it has EPH radiators. The problem I'm having is that it doesn't appear to heat up properly unless the boiler temperature is at 55⁰ and the radiator is set to 35⁰ which i think is insanely high? In my previous house we used to have it on about 23⁰. Can anyone let me know if that's normal for EPH radiators or if it's likely there is an issue with my boiler/heater.
GordonLivingstone@reddit
EPH radiator valves would appear to be thermostatic valves of various types. If you can set yours to a temperature like 35 Deg C then they are likely the electronic type and are designed to keep the radiator on until the room reaches that temperature - then restrict or stop the water flow.
So, you should be setting them at 23 Deg C or whatever temperature you want the room to reach.
If you set them as high as 35 Deg C then the radiator should just stay hot - at whatever radiator water temperature is set on the boiler. Rather unlikely that the house will actually reach 35 Deg C in a UK winter. All the radiators should feel warm from top to bottom. If not, a valve might be stuck or the radiators might need bleeding.
If the radiators are warm but the house still doesn't get warm enough then you might just need to set the boiler temperature higher. 55 Deg C just may not be enough for your combination of house, radiator sizes and weather. Try 65.
whodunnit20@reddit
Has the property had a boiler service before you moved in? Should have been given paperwork if brought the house, if rented ask the landlord. Having someone service it will show up any problems if any, plus they are really good at helping you work the boiler and radiators correctly.
dannoutt@reddit
When you say 35 degrees at the rad do you mean you’re using a smart radiator valve and the TRV (on the side of the rad) is set to 35? That means it turns the radiator on and off when it hits that temperature. It could be a lot of things but if that’s the case it could be the pin is stuck and not opening flow to the radiator properly. Or the radiator has sludge in it, or needs balanced.
Motor_Initiative7952@reddit
55°C flow is quite low for most systems typically you’d expect \~65–75°C for standard radiators. If you’re only getting 35°C at the rad, either the boiler is set too low, the system needs balancing, or there’s air/sludge in the loop. I’d try bleeding the radiators first and checking the boiler settings before anything else.
SoftMost8202@reddit (OP)
Thanks for the advice! I'll try bleeding the radiators and then go from there.
Motor_Initiative7952@reddit
You're welcome anytime
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