Hotter water wanted from cylinder

[Mottie]

One picture shows three valves. I’m lost now but does that mean that there are three circuits? Hot water, downstairs and upstairs heating maybe? I’ll have to leave it to the experts now but I just can’t see where you would adjust the hot water temperature on the hot water cylinder. Or how you would have the water heated by the boiler but not have the heating in the summer.

 

[Sabatinitennis]

Hope these are clearer.

 

[Sabatinitennis]

Hope this is clearer.

 

[Sabatinitennis]

And this one too.

 

[Madrab]

Yup, you have a convoluted S plan.

As suggested the single channel programmer in the same cupboard as the cylinder will control one of the 2 port valves that are on the vertical on the back wall that is connected to the cylinder and will then switch the boiler when the programmer is calling for hot water (possibly wired through the cylinder stat too). The other 2 port valve beside it will be connected to the rads and will be controlled by the programmable room thermostat, that will also switch the boiler when calling for room heat.

The 3rd 2 port valve in the forefront will be a safety valve that can be either controlled by the stat on the cylinder and or the same single channel programmer in the cupboard, which is a fail safe to protect the cylinder from overheat if the primary valve fails.

 

[Sabatinitennis]

Wow...these systems are complex and smart.
One last question.....where on the cylinder is the thermostat ....as I can't see one??!!

 

[Madrab]

5 of 5 is the cover of the unvented controls. There will be a thermal control in there that's used to increase the temp but honestly you really don't want to be in playing with that.

 

[Sabatinitennis]

Ok. Many thanks. Advice has been v. good.

 

[Madrab]

Get the unvented serviced, along with the boiler if it needs it and ask the qualifed engineer if he can check the setting and ensure it's set to 60Deg.

 

[Madrab]

Hover over the posts that were helpful and press the Thanks that pops up bottom right of them

 

[Sabatinitennis]

My newish shower is as good as behind the water cylinder, but in a different room obviously, yet the control needs to be turned to its farthest (hottest) setting for the water to be acceptably warm.
I've attached a photo of the boiler.... although the accompanying book suggests that turning the control on the right adjusts the temperature of the flow (??).
What do I need to adjust?

 

[flameport]

What do I need to adjust?

On the boiler - probably nothing.

How hot is the water from the hot taps?

 

[Sabatinitennis]

Tap water seems ok.

 

[Sabatinitennis]

A pal suggested a faulty shower ....not sure about that though. Cylinder and boiler are just feet apart.

 

[terryplumb]

What shower do you have. If taps give hot enough water ,but shower doesn't ,the issue is the shower.