no zone valves just a TRV !

[gravytrain]

hi
i went to a property yesterday, as part of my inspection i discovered that the heating system had no zone valves or 3 port valve just a TRV in the flow to the hot water cylinder which was connected by a wire to a metal sensor on the hot water cylinder.

there was also no controls for the boiler/heating/hot water just on and off !

customer had to turn off all the rads in the summer in order to have hot water.

anyone seen something like this before.

thanks

 

[Barry98]

only bbc watchdog

 

[SimonG]

http://www.ukplumbersforums.co.uk/c...-system-boiler-pumping-over-pump-banging.html

 

[mark_mc]

seen it before, get it a lot on older propertys with no controls trv senses the temperture at hot water cylinder and then closes down, very bad design and doesnt really dont anythings.

 

[Blackcatgas]

hi
i went to a property yesterday, as part of my inspection i discovered that the heating system had no zone valves or 3 port valve just a TRV in the flow to the hot water cylinder which was connected by a wire to a metal sensor on the hot water cylinder.

there was also no controls for the boiler/heating/hot water just on and off !

customer had to turn off all the rads in the summer in order to have hot water.

anyone seen something like this before.



Yes welcome to 1979.
Edit... "Cytrol" valve.

 

[diamondgas]

Nice post 'SimonG' .*S*
gravytrain, old fashioned way of controlling the hot water temp! they either shut of the flow and reiighed on the boiler stat keep an eyte on the boiler temp, or they diverted the circulation to bi-pass the cylinder! Nothing to worry about unless conected to something modern!

 

[gravytrain]

hi, its not one of those. looks like a drayton trv. hardwired to a metal sensor clamped onto the HWC

 

[SimonG]

Aye the one in the thread is slightly different to the ones I've seen. Look like 2 port valve with trv head. Last one I saw converted to S plan, they where running hot water continuously for half a cylinder of hot water. Now complain waters too hot!

 

[stani]

1979+++27 year old and the world at my feet
2011++++59 year old and the world around my waist!

 

[Billy Bob Bob]

as said by others and bcg its a cyltrol valve,no they dont work very well but they were a step up in controls ,well outdated, highly unlikely to work but nothing inheritinaly dangerous about it ,just advise your set ups "poieerneering"but just like one pipe systems installers soon realized they dont work,then quote for conversion to y or s plan