{"action":"opened","issue":{"url":"https://api.github.com/repos/lo-co/handix/issues/22","repository_url":"https://api.github.com/repos/lo-co/handix","labels_url":"https://api.github.com/repos/lo-co/handix/issues/22/labels{/name}","comments_url":"https://api.github.com/repos/lo-co/handix/issues/22/comments","events_url":"https://api.github.com/repos/lo-co/handix/issues/22/events","html_url":"https://github.com/lo-co/handix/issues/22","id":170082128,"number":22,"title":"Primary volume fan should match plenum rate","user":{"login":"lo-co","id":9597736,"avatar_url":"https://avatars.githubusercontent.com/u/9597736?v=3","gravatar_id":"","url":"https://api.github.com/users/lo-co","html_url":"https://github.com/lo-co","followers_url":"https://api.github.com/users/lo-co/followers","following_url":"https://api.github.com/users/lo-co/following{/other_user}","gists_url":"https://api.github.com/users/lo-co/gists{/gist_id}","starred_url":"https://api.github.com/users/lo-co/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lo-co/subscriptions","organizations_url":"https://api.github.com/users/lo-co/orgs","repos_url":"https://api.github.com/users/lo-co/repos","events_url":"https://api.github.com/users/lo-co/events{/privacy}","received_events_url":"https://api.github.com/users/lo-co/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-08-09T04:58:21Z","updated_at":"2016-08-09T04:58:21Z","closed_at":null,"body":"From Dan:\r\n\r\n> The primary volume fan has about the same rated flow rate (54.7 CFM) as all 9 of the plenum fans (9X6 = 54 CFM). So, assuming that the PWM is fairly linear between 0 V =0% and 1 V = 100%, I suggest the following PWM control voltages as a function of plenum fans running.\r\n> \r\n> 0 fans (all off): 0V PWM control\r\n> 2 fans (bank 2): 0.219 V PWM control\r\n> 3 fans (bank 3): 0.329 V PWM control\r\n> 4 fans (bank 4): 0.439 V PWM control\r\n> 5 fans (bank 2 and 3): 0.548 V PWM control\r\n> 6 fans (bank 2 and 4): 0.658 V PWM control\r\n> 7 fans (bank 3 and 4): 0.768 V PWM control\r\n> 9 fans (all on): 0.987 V PWM control"}}
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