New Baxi Avanta Exclusive Boiler Just Fitted ...No Hot Water to Upstairs Bath Tap

[TGNY]

Hi Be grateful for any help/advice.Just had the above fitted...CH works Fine ..all hot water to Downstairs works fine..But Hot water to Bath Hot tap starts hot then goes luke warm then cold ...Shower works fine and so does sink both in the same room...

We are Stumped...

Thanks

 

[lame plumber]

turn down the flow on the bath tap for a start and see if that helps

 

[SimonG]

Combi swap disease.

 

[Ermintrude]

Call back GSR who installed it.

 

[TGNY]

turn down the flow on the bath tap for a start and see if that helps

hi yes tried that..no difference im afraid...

 

[vern]

What Lame said, then stick a valve in and throttle back, it will have a 22mm supply or 3/4"

 

[Rickster123]

Baxi aventa. A rebadged remeha. I hope you've sent off your warrenty paperwork...

 

[Chalked]

If its fine downstairs it will be fine everywhere else. The boiler doesn't know where you are using the hot water.
your boiler will produce between 9-12 litres per min, fine for a small tap like a basin or sink. But on a bath tap the flow rate it too much, therefore the boiler can't produce enough. Your installer should have checked he flow rate and temperature at ALL outlets and adjusted to suit.

Other than fitting a valve under the bath to restrict flow the only means you have of controlling the temp at the bath tap is to turn the tap right down to restrict the flow to 9 litres per min. ( its not a lot!)

 

[doitmyself]

your boiler will produce between 9-12 litres per min

That's true of the smallest 28kW version; but there are also the 35kW and 39kW versions. The OP hasn't told us which one he has.

 

[SimonG]

That's true of the smallest 28kW version; but there are also the 35kW and 39kW versions. The OP hasn't told us which one he has.

The cheapest?

 

[buckley plumb]

could be drawing cold through the shower valve and blending-try turing the shower tep lever while ah hot tp is on .get plumber back to check

 

[TGNY]

If its fine downstairs it will be fine everywhere else. The boiler doesn't know where you are using the hot water.
your boiler will produce between 9-12 litres per min, fine for a small tap like a basin or sink. But on a bath tap the flow rate it too much, therefore the boiler can't produce enough. Your installer should have checked he flow rate and temperature at ALL outlets and adjusted to suit.

Other than fitting a valve under the bath to restrict flow the only means you have of controlling the temp at the bath tap is to turn the tap right down to restrict the flow to 9 litres per min. ( its not a lot!)

Thanks for all your help guys ...Reduced the flow a tad on stop tap on Boiler and it works a treat ...

 

[buckley plumb]

don't baxi put flow restrictors in the boilers - Worcester and glowworm do now

 

[Ermintrude]

External on 40kw

 

[TBServices]

Fit a flow restrictor valve on your bath tap supply.

 

[Ermintrude]

Or a combi save?

 

[TBServices]

Or a combi save?

Combisave will open up to full bore once it's up to temp though won't it?

 

[Ermintrude]

Advantage tbs.

Doh ! Take ages to respond aswell / hot to cold that is?

 

[TBServices]

I've fitted one and was quite impressed but once it got going it still let 16l/m through. Can adjust the valve to open at lower temps