Incorrect boiler installation ?

[Rilla]

I see what you mean by the position of the bypass being wrong though, I'm guessing it should be after the pump?

 

[Aire]

I've had a look and I believe its a three position valve (y plan?) so would this be ok? I am assuming if no demand for heat or water then the valve is in the middle and so there is a path back to the boiler in case of frost protection coming on?

If your on a 3 port then a bypass shouldn't be required. When there's no demand for heat the valve rests in the hot water position. The reason for a bypass is for s plan systems where once the boiler shuts off, the pump continues to over run to dissipate heat from the boiler. With zone valves theres no where for the heat to go so a bypass is fitted instead. In your case this shouldn't be an issue as during pump over run, the water will circulate the hot water circuit. The only reason I can think you may require a bypass, is if you have trvs on every radiator. In this situation, if your only calling for heat to the radiators and all trvs close, you'll have no where for the water to flow, so a bypass would still be required, but even then, it's still in the wrong place.

 

[Rilla]

Thanks Craig, theres a couple of radiators without trvs so it should be ok. Will the bypass cause any problems as I really don't want to have to call back the engineer again?

 

[Aire]

I see what you mean by the position of the bypass being wrong though, I'm guessing it should be after the pump?

Yes should be after the pump. Should have at least a 2m run of pipework.

 

[Aire]

Thanks Craig, theres a couple of radiators without trvs so it should be ok. Will the bypass cause any problems as I really don't want to have to call back the engineer again?

Not knowing if the engineer actually set it up and whether it will actually work in that position, I'm going to say it should be ok, but I'd still advise you get it removed.

 

[Aire]

Yes should be after the pump. Should have at least a 2m run of pipework.

Shouldn't it? @Harvest Fields

 

[Harvest Fields]

I’m on about the 2m of pipework. Normally it is straight off the pump.

 

[Aire]

I’m on about the 2m of pipework. Normally it is straight off the pump.

Is the 2m of pipework wrong? I don't fit many bypass's so don't want to be giving incorrect info.

 

[Harvest Fields]

Is the 2m of pipework wrong? I don't fit many bypass's so don't want to be giving incorrect info.

Don’t know specifics. Was always told as long as it is in between the pump and controls.