Draining the radiator system.....I have this system in the garage and if i screw the red button at the top above the gauge it drains water outside do i need to anything else like switch the mains off?
I am assuming that is the pressure relief valve you do NOT want to be drain your system like that. You should look for a radiator with a drain valve on it which you can connect a hose to.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local