Sunamp pressure

[ashleyhyper]

Hi, 

 

I have a sunamp and been using it for about a year. 

The pressure is pretty low on the outlet. I have isolated everything and just have mains water going straight to the inlet which is about 4bar, then I have a temporary tap connected directly to the outlet which when turned on is at a low pressure.

 

I have very hard water and have only got around to fitting a water softener (not connected for the above test). The pipework going in and out of the sunamp are ok and not blocked but just wondering what internals of the sunamp could effect pressure or be effected by hard water within a year. Is there anything on the sunamp itself I can check to see if it's blocked or effected by limescale or perhaps is it worth running some descaler through the system? 

 

Any help appreciated :)

[Nickfromwales]

3 hours ago, ashleyhyper said:

Hi, 

 

I have a sunamp and been using it for about a year. 

The pressure is pretty low on the outlet. I have isolated everything and just have mains water going straight to the inlet which is about 4bar, then I have a temporary tap connected directly to the outlet which when turned on is at a low pressure.

 

I have very hard water and have only got around to fitting a water softener (not connected for the above test). The pipework going in and out of the sunamp are ok and not blocked but just wondering what internals of the sunamp could effect pressure or be effected by hard water within a year. Is there anything on the sunamp itself I can check to see if it's blocked or effected by limescale or perhaps is it worth running some descaler through the system? 

 

Any help appreciated

Hi. These suffer massively if there is untreated hard water, due to the multiples of small bore pipes running through the heat exchanger.

 

Which model is it, and how many pipe connections do you have, and size? Have you tried running water backwards through to clear out any other possible debris? Are you checking from the immediate outlet, or from the output of a blending valve?

 

You may be out of warranty if you have belayed getting the water softener in from the point of installation, tbh.

[ashleyhyper]

Thanks for the reply. 

Do you think it's safe to run some kind of descaling solution through it? And would it make a difference? 

 

It's the thermino 210e. Mains is 25mm mdpe then to 22mm copper straight into the sunamp, then I'm connected directly onto 22mm outlet on sunamp for testing. 

 

Haven't tried running water backwards, good idea.