Hi,
My dad has a Grant 26e external combination oil fired boiler with the water pressure provided directly by the mains water and he would like to upgrade a couple of his radiators to match the others, which (I assume) ultimately means draining down the system and changing the pipework (some of which is in the screed beneath the floorline).
I would therefore appreciate some views from professional plumbers on the following questions:
Regards
Jever
My dad has a Grant 26e external combination oil fired boiler with the water pressure provided directly by the mains water and he would like to upgrade a couple of his radiators to match the others, which (I assume) ultimately means draining down the system and changing the pipework (some of which is in the screed beneath the floorline).
I would therefore appreciate some views from professional plumbers on the following questions:
- Assuming we need to drain the system down to make the changes, is it normal with the heating system I mentioned to be able to switch of the mains supply to the heating circuit but leave the supplies to the taps still on? I have an old oil fired boiler with a live mains feed and can do this in my home, but I'm not sure my dad's system allows for this.
- Is it usual to have a drain off cock with such a system? We can't seem to locate it. What would a professional plumber do when they want to change the pipework on a system like this? I assume you drain down and do soldered joints, correct?
- If I can't get all of the water out of the system, I was thinking about making some of the joints in either brass compression or plastic push-fit fittings. Is it safe to use these sorts of fittings in the screed?
Regards
Jever