I have an OSO 210l indirect series 20 water tank. In the last 6-12 months it has developed some symptoms
1) When the hot water is really hot, it affects the pressure from the cold water. This can be particularly seen if I flush a toilet, where the cold drops to practically nothing while the hot remains high pressure. While you would expect some drop on the cold, the drop has become much more severe
2) The pressure from the hot water is initially stronger then reduces down after flowing for about 60 seconds or so to match the cold pressure
There is no leaking to the tundish right now although I have had to recreate the air bubble every 6 months or so to prevent a cold dripping.
My first thoughts are the pressure reducing valve and pressure relief valve. I have opened the pressure relief valve and there was quite a build up of green calcium debris in there. This seems to have improved things.
For the life of me I simply cannot get the pressure reducing valve cartridge open. Here is a picture of it. You see it has a massive 50mm nut at the bottom. I have used the tool I have also pictured here to try and undo it. I have used all the force I can muster and it will not budge (the tool is not slipping) and I am trying to undo it in an anti-clockwise direction (i.e rotating the handles of the tool from the left side to the right). Am I trying to open this the wrong way? I am probably being an idiot with this part.
1) When the hot water is really hot, it affects the pressure from the cold water. This can be particularly seen if I flush a toilet, where the cold drops to practically nothing while the hot remains high pressure. While you would expect some drop on the cold, the drop has become much more severe
2) The pressure from the hot water is initially stronger then reduces down after flowing for about 60 seconds or so to match the cold pressure
There is no leaking to the tundish right now although I have had to recreate the air bubble every 6 months or so to prevent a cold dripping.
My first thoughts are the pressure reducing valve and pressure relief valve. I have opened the pressure relief valve and there was quite a build up of green calcium debris in there. This seems to have improved things.
For the life of me I simply cannot get the pressure reducing valve cartridge open. Here is a picture of it. You see it has a massive 50mm nut at the bottom. I have used the tool I have also pictured here to try and undo it. I have used all the force I can muster and it will not budge (the tool is not slipping) and I am trying to undo it in an anti-clockwise direction (i.e rotating the handles of the tool from the left side to the right). Am I trying to open this the wrong way? I am probably being an idiot with this part.