DIY Doctor

Main navigation


My hot water seems too hot with indirect system

Postby Inexperienced » Mon Jul 19, 2021 11:20 pm

My hot water temperature seems too hot. It’s an indirect cylinder. I have ended up lowering my cylinder thermostat to 40, but this still feels like it’s burning - this doesn’t seem normal. Someone has suggested it’s generally hotter given the time of year? My cylinder is approx 1m high, and the thermostat is approx 220mm from the base (so roughly 1/4 up as advised). The immersion heater isn’t turned on. My setup is 2 Myson power extra valves. Any help is appreciated and I have access to a multimeter. Thanks.
Inexperienced
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Mon Jul 19, 2021 11:10 pm


Sponsor

Simply Build It

Postby stoneyboy » Thu Jul 22, 2021 9:55 pm

Hi inexperienced
With the system on for hot water try reducing the thermostat temperature - you may be lucky and hear it click. Turn it up and down to check. Once you have determined where it turns on and off check the motorised valve and see if it is working. This should help you isolate the problem.
Regards S
stoneyboy
Rank: Project Manager
Posts: 5078
Joined: Wed Dec 10, 2008 6:44 pm


Postby Inexperienced » Sat Jul 24, 2021 7:18 pm

Hello Stoneyboy,

Many thanks for replying. So I’ve tried what you suggested, I can hear it click on and off, and there’s a led on the valve - this illuminates on and goes out when off, so I’m guessing both are working as they should? Immersion double checked and off. Hot water still seems too hot.
Inexperienced
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Mon Jul 19, 2021 11:10 pm


Postby stoneyboy » Sun Jul 25, 2021 9:37 pm

Hi inexperienced.
Next try turning the thermostat lower to around 25 degrees or even a bit lower. If your water still gets too hot feel the pipes either side of the motorised valve. If both are hot all the time when the HW is on then the valve is sticking partly open.
Regards S
stoneyboy
Rank: Project Manager
Posts: 5078
Joined: Wed Dec 10, 2008 6:44 pm



Display posts from previous
Sort by
Order by



  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!


 
  • Related Topics