Draining radiators on a communal heating system
Hi all,
I have a small plumbing job to do for which I need to drain the radiators in my property. There are only two radiators, that are fed by a communal boiler, and pass through an immersion heater. I have already identified the isolation valves for the primary flow and the return to my property. I don't have access to the communal boiler, or the specifications for it, and the building manager hasn't responded to my e-mails in months.
What I need to know is, how do I isolate my radiator system from the communal boiler in order to drain the radiators and work on the pipes, and then safely open the flow again once the work is done?
I have no pressure gauge in my property, is pressure something I need to worry about? Or is it as simple as turning off the flow and return to my property, draining the radiators, doing the work, and then turning them on again and bleeding the radiators until they refill?
I'd be very grateful to anyone that can help with this query.
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