Can anybody tell me what measurement i should have for my open vent pipe into the f&e (central heating not hot water storage). i have hot water discharging and this pipe is very low.
Thanks
Thanks
Central Heating open vent height calculation
- Thread starter givemestrength
- Start date
Generally, the minimum is considered 450, but a bit more wouldn't hurt.
Apart from that, chances are that the problem is not lack of height, but sludge in the system, faulty pump replacement, or a design fault in the piping.
Apart from that, chances are that the problem is not lack of height, but sludge in the system, faulty pump replacement, or a design fault in the piping.
mmmm. vent barely makes it over top of cistern and the end is in the water. Was thinking of reducing pump speed as well. Any other suggestions?
Just over the top is no good. Cut the bend off, and stick a metre or so of straight 22mm in; your can solder or use compression joints.
You can try setting the pump lower, but you will have to keep an eye on the boiler to make sure lowest setting will shift all the heat.
You can try setting the pump lower, but you will have to keep an eye on the boiler to make sure lowest setting will shift all the heat.
Thanks for replys will try to extend the vent first. Pump positioning is ok and system heats up real quick so i think sludge not a big problem.
The pump maybe, but where's the cold feed and vent connect.
C
cmother1
Hmmm... sounds like a design fault. The best layout I've found is
Boiler->Vent->Closely followed by Cold Fill->Motorised Valves->Rads&H/W->Returns to Boiler. If you put an air disperser on the vent you'll also have no problems with air in the system.
The fatal configuration is putting the vent after the pump
Boiler->Vent->Closely followed by Cold Fill->Motorised Valves->Rads&H/W->Returns to Boiler. If you put an air disperser on the vent you'll also have no problems with air in the system.
The fatal configuration is putting the vent after the pump
C
cmother1
Oh yeah - good point. Sorry about that should have read -
Boiler->Vent->Closely followed by Cold Fill->PUMP->Motorised Valve(s)->Rads&H/W->Returns to Boiler
So many bits these modern systems.... hard to remember at my age...
Boiler->Vent->Closely followed by Cold Fill->PUMP->Motorised Valve(s)->Rads&H/W->Returns to Boiler
So many bits these modern systems.... hard to remember at my age...
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
