Fixing central heating/ Connecting stove

[clonman]

Hi, I've got a house here with a closed system central heating on a oil boiler. The house is two stories with an attic. Two questions:
1) One of the upstairs radiators is fed by the pipes which go up into the attic and then back down to the radiator. This radiator is not going hot when the heating is on. I'm assuming it's an airlock in the pipes up in the attic. Would putting vents on the pipes up in the attic solve the problem? or do the pipes need to be moved? would increasing the pressure on the system a bit help to drive the water up and over?

2)There is a range stove in the house with a back boiler which they want to connect up to the system to use the existing pumps. The idea is to split a nearby return pipe so that it runs through the stove and then back to the return of the boiler and then distributed out thus. Can anyone foresee any problems with this idea? Other than a vent on the pipes near/above the back boiler are there any other valves that should be put in place?
Thanks for any help.

 

[WHPES]

1, Automatic air vents at the highest points will fix this

2, No. don't mix the two. Make it into a seaparate system or (dare I say it) use a Dunsley Equaliser.

 

[Gray0689]

Hi, I've got a house here with a closed system central heating on a oil boiler. The house is two stories with an attic. Two questions:
1) One of the upstairs radiators is fed by the pipes which go up into the attic and then back down to the radiator. This radiator is not going hot when the heating is on. I'm assuming it's an airlock in the pipes up in the attic. Would putting vents on the pipes up in the attic solve the problem? or do the pipes need to be moved? would increasing the pressure on the system a bit help to drive the water up and over?

2)There is a range stove in the house with a back boiler which they want to connect up to the system to use the existing pumps. The idea is to split a nearby return pipe so that it runs through the stove and then back to the return of the boiler and then distributed out thus. Can anyone foresee any problems with this idea? Other than a vent on the pipes near/above the back boiler are there any other valves that should be put in place?
Thanks for any help.

You can't put a back boiler on a sealed system (it go boom)
Seriously it's very dangeres

 

[Dannypipe]

True that...it's a no, no.

 

[WHPES]

Yes missed that. Need to convert to open vented