Fan timer with "stay on" option
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Posted by Lacustral on July 31, 2007, 10:59 am
Please log in for more thread options Is there a fan timer that has an option to just leave it on? I'm planning to get a bathroom fan, but I also want to be able to just leave it on, to use it to clear air out of the house generally. The fan wouldn't be more than about 2 amps. I'm sure it's also possible to set up a circuit to bypass a timer that doesn't have a "stay on" switch. How would one do that? I want a quiet fan timer. Someone told me of a timer which goes up to 12 hours, but they said it makes noise. So something electronic, maybe. Something quiet that goes up to 12 hours would be fine, as long as it also lets you leave the fan on for only a few minutes. Such a thing wouldn't have to be a *fan* timer specifically, any timer that has a "stay on" option that is good up to 2 amps or so would work. Thanks Laura | |||||||||||||||||||||||||
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Posted by Arfa Daily on July 31, 2007, 3:31 pm
Please log in for more thread options I don't know whereabouts you are, but here in the UK, such an item is commonly available as a shower extractor fan with a built in light http://www.screwfix.com/app/sfd/cat/pro.jsp?id=25652&cm_re=SEARCHPROMO-_-SHOWER%20EXTRACTOR%20FAN-_-25652&ts=10039 It is hooked into the normal lighting circuit, and as long as the light is on, the fan runs. When you switch off the light, the fan continues to run up to an adjustable time of 20 minutes Arfa | |||||||||||||||||||||||||
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Posted by Lacustral on July 31, 2007, 9:43 pm
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Arfa Daily (arfa.daily@ntlworld.com) wrote: >I don't know whereabouts you are, but here in the UK, such an item is
>commonly available as a shower extractor fan with a built in light >http://www.screwfix.com/app/sfd/cat/pro.jsp?id=25652&cm_re=SEARCHPROMO-_-SHOWER%20EXTRACTOR%20FAN-_-25652&ts=10039
>It is hooked into the normal lighting circuit, and as long as the light is
>on, the fan runs. When you switch off the light, the fan continues to run up >to an adjustable time of 20 minutes >Arfa That's interesting. I don't want to leave a light on when the fan is running, but I wasn't going to have a light hooked up to the fan anyway. Sounds like I could use such a switch on a fan, without a light, and leave the switch on if I want ventilation overnight, say. I wouldn't care if, when I go turn the fan off, it keeps on running for a few minutes after I switch it off. Thanks. You may have come up with a creative solution that the fan company tech support didn't. I live in the USA. Laura >> Is there a fan timer that has an option to just leave it on? I'm planning
>> to get a bathroom fan, but I also want to be able to just leave it on, to >> use it to clear air out of the house generally. The fan wouldn't be more >> than about 2 amps. >> >> I'm sure it's also possible to set up a circuit to bypass a timer that >> doesn't have a "stay on" switch. How would one do that? >> >> I want a quiet fan timer. Someone told me of a timer which goes up to >> 12 hours, but they said it makes noise. So something electronic, maybe. >> Something quiet that goes up to 12 hours would be fine, as long as it >> also lets you leave the fan on for only a few minutes. >> >> Such a thing wouldn't have to be a *fan* timer specifically, any timer >> that has a "stay on" option that is good up to 2 amps or so would work. >> >> Thanks >> Laura >> | |||||||||||||||||||||||||
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Posted by Arfa Daily on August 1, 2007, 4:37 am
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> Arfa Daily (arfa.daily@ntlworld.com) wrote:
> > >>I don't know whereabouts you are, but here in the UK, such an item is
>>commonly available as a shower extractor fan with a built in light >
>>http://www.screwfix.com/app/sfd/cat/pro.jsp?id=25652&cm_re=SEARCHPROMO-_-SHOWER%20EXTRACTOR%20FAN-_-25652&ts=10039
>
>>It is hooked into the normal lighting circuit, and as long as the light is
>>on, the fan runs. When you switch off the light, the fan continues to run >>up >>to an adjustable time of 20 minutes >>Arfa >
> That's interesting. I don't want to leave a light on when the fan is > running, but I wasn't going to have a light hooked up to the fan anyway. > Sounds like I could use such a switch on a fan, without a light, and > leave the switch on if I want ventilation overnight, say. I wouldn't care > if, when I go turn the fan off, it keeps on running for a few minutes > after I switch it off. > > Thanks. You may have come up with a creative solution that the fan > company tech support didn't. > > I live in the USA. > > Laura There's no reason that you could not run this particular fitting without the lamp installed. It employs a switch mode power supply, which doesn't care much whether it's got the combined load of both the fan and lamp, or just the lamp on it. I'm sure a similar unit would be available through Home Depot or wherever. Arfa | |||||||||||||||||||||||||
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Posted by Jasen Betts on August 1, 2007, 4:14 am
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> Is there a fan timer that has an option to just leave it on? I'm planning
> to get a bathroom fan, but I also want to be able to just leave it on, to > use it to clear air out of the house generally. The fan wouldn't be more > than about 2 amps. > > I'm sure it's also possible to set up a circuit to bypass a timer that > doesn't have a "stay on" switch. How would one do that? wire an ordinary switch in parallel with the timers contacts > I want a quiet fan timer. Someone told me of a timer which goes up to
> 12 hours, but they said it makes noise. So something electronic, maybe. > Something quiet that goes up to 12 hours would be fine, as long as it > also lets you leave the fan on for only a few minutes. the cheapest timers are clockwork and do 'tick', but probably make less noise than the fan - they're quiet enough to use in classrooms etc... > Such a thing wouldn't have to be a *fan* timer specifically, any timer
> that has a "stay on" option that is good up to 2 amps or so would work. I've also seen timers used to control lights and heating Bye. Jasen | |||||||||||||||||||||||||
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> to get a bathroom fan, but I also want to be able to just leave it on, to
> use it to clear air out of the house generally. The fan wouldn't be more
> than about 2 amps.
>
> I'm sure it's also possible to set up a circuit to bypass a timer that
> doesn't have a "stay on" switch. How would one do that?
>
> I want a quiet fan timer. Someone told me of a timer which goes up to
> 12 hours, but they said it makes noise. So something electronic, maybe.
> Something quiet that goes up to 12 hours would be fine, as long as it
> also lets you leave the fan on for only a few minutes.
>
> Such a thing wouldn't have to be a *fan* timer specifically, any timer
> that has a "stay on" option that is good up to 2 amps or so would work.
>
> Thanks
> Laura
>