I have a hallway double radiator in a tight space at the foot of the stairs behind the front door, set a long way off the wall hanging on the longer side of the offset wall brackets. It also has vertical 15mm tails coming out of the floor some 120mm away from the wall which frequently get kicked because they stick out into the floor space. This must have been driven by a floor joist positioned 70mm parallel to the wall and right in the way of where pipes would normally come up vertically to the radiator.
The radiator has already been removed for decorating so the 15mm tails are easily accessed and beneath the floor they go to a 15mm to 8mm microbore compression reducing joint that is easily accessible, the pipework from there onwards underfloor is 8mm.
PLAN >> So I now want to get the radiator back on the shorter side of the brackets gaining about 18mm. Also to move the tails to sit inside the space between the wall and the joist. They would need to be remade with a dog-leg bend to reach the radiator, but it should all look neater and be less of an obstacle. My plan would be to remake the section of 15mm tail and just swap it over at that same joint.
However >> I have had problems with air in this Vaillant Thermo compact based sealed heating system. But the faulty pressure gauge and auto-vent valve have been replaced and the problem resolved via a good heating engineer. So I don’t want to now have to drain down the whole system to do what is hopefully a simple task and potentially introduce more air lock problems!
Question >> Can I get everything ready with new threaded nuts and olive in place and swap them over with loss of just some water, or am I risking disaster? No I don’t have access to a freezing kit or know how/ if I can isolate and minimise any water loss. Should I let just some water out of the drain valve to ease the pressure and make it easier to work with?
Would I just be introducing lots of air into the system and be better off draining the whole thing anyway? After all this is downstairs and if it doesn’t go to plan there could be a lot of water?
Please advise the best route.
Many thanks.
The radiator has already been removed for decorating so the 15mm tails are easily accessed and beneath the floor they go to a 15mm to 8mm microbore compression reducing joint that is easily accessible, the pipework from there onwards underfloor is 8mm.
PLAN >> So I now want to get the radiator back on the shorter side of the brackets gaining about 18mm. Also to move the tails to sit inside the space between the wall and the joist. They would need to be remade with a dog-leg bend to reach the radiator, but it should all look neater and be less of an obstacle. My plan would be to remake the section of 15mm tail and just swap it over at that same joint.
However >> I have had problems with air in this Vaillant Thermo compact based sealed heating system. But the faulty pressure gauge and auto-vent valve have been replaced and the problem resolved via a good heating engineer. So I don’t want to now have to drain down the whole system to do what is hopefully a simple task and potentially introduce more air lock problems!
Question >> Can I get everything ready with new threaded nuts and olive in place and swap them over with loss of just some water, or am I risking disaster? No I don’t have access to a freezing kit or know how/ if I can isolate and minimise any water loss. Should I let just some water out of the drain valve to ease the pressure and make it easier to work with?
Would I just be introducing lots of air into the system and be better off draining the whole thing anyway? After all this is downstairs and if it doesn’t go to plan there could be a lot of water?
Please advise the best route.
Many thanks.