3amp according to that documentation. I guess you mean disconnected and the valves switched off. I prefer to have them capped and the system filled if I'm switching it on for hot water only. Sometimes the valves don't operate fully. I wouldn't run it with no pressure in.
3amp according to that documentation. I guess you mean disconnected and the valves switched off. I prefer to have them capped and the system filled if I'm switching it on for hot water only. Sometimes the valves don't operate fully. I wouldn't run it with no pressure in.