Cylinder runs empty ?!?!

[Old Account]

Customer: I have a non vented boiler system with a valiant Ecotech boiler and a NON valiant cylinder. The boiler has recently been serviced by valiant. The problem we have is that after half an hour the hot water runs out and then it takes another half an hour for it to get hot again.

Has anyone an idea of what it could be I am going there tomorrow and want to be prepared a little. Has anyone an idea what could be wrong or what should I be checking?

Tja k you guys !!!

 

[townfanjon]

Is this a trick question Ron ?lol

Assuming I have read it right

 

[Old Account]

Is this a trick question Ron ?lol

Assuming I have read it right

No I am on my way there now as he needs that sorted now. Perhaps you could tell me what’s the solution or am I being thick right now?

 

[Old Account]

Can’t imagine to rub out of hot water

 

[Old Account]

Is this a trick question Ron ?lol

Assuming I have read it right

Basically the customer is complaining that the unvented cylinder is running out of hot water in 30min which I think is not possible is it? Cylinder is about 150l. The temperature at the hot water was scalding as the boiler did 70c. I turned it down to 60c now at the boiler. But I do not know what to say about the 30min hot water issue

 

[Old Account]

Lol, they increased mains water pipe 25mm, outside installed home boost grundlos mains water pump 5bar pressure. 150 l cylinder and Vaillant ecotec plus 630. 3 storeby house, 2,5 bathrooms. Top one when filling big bathtub and then wondering why it’s empty

Dave I wasn’t sure about his question so I didn’t k ow where to start looking for. So I am sorry when I asked a silly question

 

[townfanjon]

They are using it pal , bet theres nothing wrong , a 150 cylinder in half hour , no chance

 

[Old Account]

They are using it pal , bet theres nothing wrong , a 150 cylinder in half hour , no chance

If there is no chance of emptying the 150 l what would be the answer to their question of running out of hot water after 30min?they will the top bathtub full and it’s cold afterwards.

 

[townfanjon]

No I think they are emptying it . Just calc how many lites/ min hot tap is supplying ,
eg 10 lt/min x30 = the answer lol

 

[sammathias]

Well the system is undersized for the demand then...