why is my shower not running enough hot water?

[liam2523]

i have just had a thermostatic shower mixer installed (pw1239) even with the controls set to maximum heat i cannot get enough hot water for a shower. there is some hot coming through but it seems to be over powered by the cold. i have a baxi 105he combi boiler, the shower valve can be used with a combi as i have checked the manual. i only have this one shower in the house and the boiler is upstairs. all other taps in the house are fine. i have also tried turning the hot water up on the boiler but this hasn't worked either. any ideas?

 

[gasmick2]

Hi it sounds like you need an in line pressure reducing valve in the cold feed to the shower the hot pressure is reduced after its been through the boiler plate heat exchanger so it can be heated so you need to equal the pressure to the shower inputs to the same each side that should make a difference you can get a double in line valve the gives an equilibrium of pressure out of hot and cold and is pre set

 

[ajs heating]

pw1239

thats a funny thermostic mixer

 

[liam2523]

why?

 

[Slugbabydotcom]

Hi it sounds like you need an in line pressure reducing valve in the cold feed to the shower the hot pressure is reduced after its been through the boiler plate heat exchanger so it can be heated so you need to equal the pressure to the shower inputs to the same each side that should make a difference you can get a double in line valve the gives an equilibrium of pressure out of hot and cold and is pre set

Ok you can take a breath now . Are you going for the record of the longest sentence to be posted on DIYnot?

 

[stardanny]

Some thermostatic shower mixer has a lockshield manual control behind temb knob. I used to fit mira shower mixer for OAP home and I preset temp for safely. I don't know what shower mixer you got. Can you tell me what model is it?

 

[Timmyturtle]

Also some have a restrictor that goes inline at the shower for the cold,to restrict cold flow