I'm planning some improvements to my Grandad's central heating as part of his utility room improvements. He currently has a simple floorstanding gas boiler with a seperate pump and programmer. I want to replace the programmer but want to know what sort of system he has.
Going to upstairs is an un-pumped pair of pipes at 22-25mm. I suspect these go to the cylinder, but I see no other pipes that go upstairs, so is it possible these pipes also feed the rads? There is a pumped pair that go to the downstairs rads.
The programmer is an old Honeywell with a small display and three sliders to select the mode, and on/twice/once/off for CH and HW. And there is a cable from this to the pump and to the boiler. There appears to be no other valves and controls, apart from a roomstat.
Should there be a cylinder stat? Or is there some other way that the system regulates the cylinder temp? Is it possible the upstairs rads are on the same circuit as the cylinder, unpumped?
Any advice would be appreciated so I can understand this better, and perhaps buy them a new programmer. The thermostat is more modern and doesnt need replacing.
Thanks.
Going to upstairs is an un-pumped pair of pipes at 22-25mm. I suspect these go to the cylinder, but I see no other pipes that go upstairs, so is it possible these pipes also feed the rads? There is a pumped pair that go to the downstairs rads.
The programmer is an old Honeywell with a small display and three sliders to select the mode, and on/twice/once/off for CH and HW. And there is a cable from this to the pump and to the boiler. There appears to be no other valves and controls, apart from a roomstat.
Should there be a cylinder stat? Or is there some other way that the system regulates the cylinder temp? Is it possible the upstairs rads are on the same circuit as the cylinder, unpumped?
Any advice would be appreciated so I can understand this better, and perhaps buy them a new programmer. The thermostat is more modern and doesnt need replacing.
Thanks.