Radiators cold when heating is on - Offsite Heating, Pressure seems fine.

[bvrial]

Hi,

I tried to turn my heating on but my radiators are staying cold, I added more water to the system which raised the pressure but there was no change, i've made sure the radiators are bled and nothing has changed since last year when all of this was working.

I've attached some pictures of my setup I think all of the heating is done offsite and hot water is then pumped through this unit to be metered.

Does anyone know what the big red lever in the last picture does? when i turn it it sounds like water either starts or stops flowing.

Any help would be much appreciated.

Regards,
Callum

 

[ShaunCorbs]

Pressures too high bleed a rad into a tub until it's back down to 1.25 cold or 2.5 hot

Do you have hot water ?