Less hot water since new boiler installed

InPsyDer

I live in an apartment block and our gas boiler was just replaced a couple of weeks ago.

Since then, the hot water seems to run out very quickly compared to previously. Used to get enough hot water for 2+ showers even just running the 1hr boost - now I have it set to heat up water for 1h40m and it's stone cold after 2 showers! I have turned the temp up to just below 70 on both the cylinder and boiler (used to be grand at 60!) - no improvement.

I can't understand how this could happen with a brand new boiler in place? Our management company uses the same plumbers for loads of jobs so they aren't cowboys or anything. Would be very grateful for any insights! I don't want to call the plumber about this (as he was a grumpy sort) without checking I'm not missing something obvious first!

Dtp1979

InPsyDer wrote: »

I live in an apartment block and our gas boiler was just replaced a couple of weeks ago.

Since then, the hot water seems to run out very quickly compared to previously. Used to get enough hot water for 2+ showers even just running the 1hr boost - now I have it set to heat up water for 1h40m and it's stone cold after 2 showers! I have turned the temp up to just below 70 on both the cylinder and boiler (used to be grand at 60!) - no improvement.

I can't understand how this could happen with a brand new boiler in place? Our management company uses the same plumbers for loads of jobs so they aren't cowboys or anything. Would be very grateful for any insights! I don't want to call the plumber about this (as he was a grumpy sort) without checking I'm not missing something obvious first!

Open the balance valve on the cylinder another half turn. Also check the cylinder stat is at 60

InPsyDer

Both cylinder and boiler are set at just under 70.

Dtp1979

InPsyDer wrote: »

Both cylinder and boiler are set at just under 70.

And the balance valve on the coil?

escortsaffair

Leaking; Low boiler pressure; No heating or hot water; Frozen ... fault, your engineer may recommend that you get a new boiler installed.

Dtp1979

escortsaffair wrote: »

Leaking; Low boiler pressure; No heating or hot water; Frozen ... fault, your engineer may recommend that you get a new boiler installed.

Wtf are you on about.

jimf

Dtp1979 wrote: »

Wtf are you on about.

he could be back
:p:p:p:p:p:p:p:p:p

Dtp1979

jimf wrote: »

he could be back
:p:p:p:p:p:p:p:p:p

God, who? There’s been so many

John.G

InPsyDer wrote: »

Both cylinder and boiler are set at just under 70.

Just feel the cylinder coil flow & return, you shouldn't be able to hold the flow and if the return is relatively cool then check the balancing valve as suggested above, (if fitted) and open it further, anything around one full turn from closed is generally more than adequate, fully open is ~ 4/5 full turns anticlockwise from fully shut.

InPsyDer

John.G wrote: »

check the balancing valve as suggested above, (if fitted) and open it further, anything around one full turn from closed is generally more than adequate, fully open is ~ 4/5 full turns anticlockwise from fully shut.

Sorry I'm not sure what a balancing valve is? Thanks!

John.G

If you look at the side of the hot water cylinder you will see two x 3/4" copper pipes, the bottom one will be approx a third the way up from the bottom, there should be a valve on this, normally with a wheel (its called a gate valve) then follow post #9.