Hi all, Have recently moved into a an old farm house and am trying to get the the cental heating working in all rooms. It's dam cold up hear in Scotland.
Basic problem is that 2 rads downstairs and two rads upstairs will not get hot. This leads me to my first system config question. There is a Thermostatically controlled rad in the kitchen next to the boiler (Boulter Camray Model 70/90 fitted 1991) The rad is fed from what looks like an auxiliary cct directly from the boiler, it does not seen to be supplied by the pump since the main outlet pipe goes directly to the pump in the kitchen attic. This rad gets slightly warm at the top (fed from the top) the rest of it is cold. Rad has been removed and flushed. There seems to be pressure when one or other of the taps is open but no flow when both are open. This is a sealed system pressurised at 1.5 bar by main supply to a pressure vessle. Does anybody know the reason for this auxilluary cct setup? Rad has been bled to no avail.
The 2 rads up stairs that refuse to get hot are doing my head in. Hot water getting to both rads if I close the outlet valves, open the inlet thermostats and bleed. If I close inlets and open outlets there is back pressure present when I bleed (Pump looks to push water to the inlets rather than pull the outlet). Open both valves, both rads an stone cold, no flow at all. I shut all other rads down except these two, closed the hot water loop and cranked up the pump to try and shift any airlocks. As you may have guessed, to no avail . The 4th rad down stairs is having the same problem. I have run out of ideas. Any further suggestion Final question is this; Just after the pump there is a 15mm pipe leading straight to the return to the boiler with a stop tap in line. Where should this tap be set for the normal operation of the system?
Thanks for your help, and hopefully, with your help I will start to feel my toes again!
Regards
Dave
Basic problem is that 2 rads downstairs and two rads upstairs will not get hot. This leads me to my first system config question. There is a Thermostatically controlled rad in the kitchen next to the boiler (Boulter Camray Model 70/90 fitted 1991) The rad is fed from what looks like an auxiliary cct directly from the boiler, it does not seen to be supplied by the pump since the main outlet pipe goes directly to the pump in the kitchen attic. This rad gets slightly warm at the top (fed from the top) the rest of it is cold. Rad has been removed and flushed. There seems to be pressure when one or other of the taps is open but no flow when both are open. This is a sealed system pressurised at 1.5 bar by main supply to a pressure vessle. Does anybody know the reason for this auxilluary cct setup? Rad has been bled to no avail.
The 2 rads up stairs that refuse to get hot are doing my head in. Hot water getting to both rads if I close the outlet valves, open the inlet thermostats and bleed. If I close inlets and open outlets there is back pressure present when I bleed (Pump looks to push water to the inlets rather than pull the outlet). Open both valves, both rads an stone cold, no flow at all. I shut all other rads down except these two, closed the hot water loop and cranked up the pump to try and shift any airlocks. As you may have guessed, to no avail . The 4th rad down stairs is having the same problem. I have run out of ideas. Any further suggestion Final question is this; Just after the pump there is a 15mm pipe leading straight to the return to the boiler with a stop tap in line. Where should this tap be set for the normal operation of the system?
Thanks for your help, and hopefully, with your help I will start to feel my toes again!
Regards
Dave