Discuss Making Extractor Fans smart with Shelly in the UK Electrical Forum area at ElectriciansForums.net

brettuk

DIY
Reaction score
0
Hey,

I'm looking to smartify my extractor fans in toilets/bathrooms for two reasons really
1) I currently leave the light on the let the fans run to bring humidity down, I'd rather it did this automatically
2) I want to smartify my lights, and I don't want the fans to be on permanently.

I've been looking at the Shelly 1's - Shelly 1 Open Source - Shelly Cloud - https://shelly.cloud/shelly1-open-source/ which look great and would be perfect for this IMO.

So I have two different types of extractor fans, Timed and Simple

The Timed extractor fans come on with the light, and then when the light is switched off run for a few minutes. They all have Isolation Switches next to the fan.

The wiring should be something like: Install shower extractor fan | Electrics - http://www.ultimatehandyman.co.uk/how-to/electrics/install-shower-extractor-fan

I propose to wire the Shelly in, post-isolation switch (but in the same enclosure) like this: View: https://Upload the image directly to the thread.com/a/ZwQUxT6


Because I'm proposing to replace the bulb with a Hue bulb in due course, the Switched Live will always be on, so in my diagram I've wired it in to live and ignored the Switched Live input on the Shelly (SW) Although I may decide to wire it into the SW pin, I haven't decided yet.

The Shelly will be POST isolator switch, so turning off the Isolator switch will still kill all power to the fan and the shelly.

Will this work as I expect?

The second type of fan is a simple on/off switch fan with no timer. I've had a look at it's wiring (see my link below) and from what I can tell the switched live and neutral are hooked into the fan, which makes sense. What I don't understand though is what the purpose of the yellow wire is that isn't hooked up - it doesn't appear to be earth, so I wonder if this is the Permie Live? If so I can use that to power the Shelly, I'd rather not have the Shelly on the switched live as then if someone accidentally turns off the switch, the Shelly will go offline.

The switch that controls this extractor fan is unlike the rest in the house - the rest in the house have the wires attached to the switch which is part of the casing. This switch has the switch attached to the internal housing, I haven't removed it as yet to take a closer look - but I'd be surprised if it had a neutral in it, the rest of the switches in the house don't have neutrals.

View: https://Upload the image directly to the thread.com/a/cY0i2z8


Thanks!
 
Hey,

I'm looking to smartify my extractor fans in toilets/bathrooms for two reasons really
1) I currently leave the light on the let the fans run to bring humidity down, I'd rather it did this automatically
2) I want to smartify my lights, and I don't want the fans to be on permanently.

I've been looking at the Shelly 1's - Shelly 1 Open Source - Shelly Cloud - https://shelly.cloud/shelly1-open-source/ which look great and would be perfect for this IMO.

So I have two different types of extractor fans, Timed and Simple

The Timed extractor fans come on with the light, and then when the light is switched off run for a few minutes. They all have Isolation Switches next to the fan.

The wiring should be something like: Install shower extractor fan | Electrics - http://www.ultimatehandyman.co.uk/how-to/electrics/install-shower-extractor-fan

I propose to wire the Shelly in, post-isolation switch (but in the same enclosure) like this: View: https://Upload the image directly to the thread.com/a/ZwQUxT6


Because I'm proposing to replace the bulb with a Hue bulb in due course, the Switched Live will always be on, so in my diagram I've wired it in to live and ignored the Switched Live input on the Shelly (SW) Although I may decide to wire it into the SW pin, I haven't decided yet.

The Shelly will be POST isolator switch, so turning off the Isolator switch will still kill all power to the fan and the shelly.

Will this work as I expect?

The second type of fan is a simple on/off switch fan with no timer. I've had a look at it's wiring (see my link below) and from what I can tell the switched live and neutral are hooked into the fan, which makes sense. What I don't understand though is what the purpose of the yellow wire is that isn't hooked up - it doesn't appear to be earth, so I wonder if this is the Permie Live? If so I can use that to power the Shelly, I'd rather not have the Shelly on the switched live as then if someone accidentally turns off the switch, the Shelly will go offline.

The switch that controls this extractor fan is unlike the rest in the house - the rest in the house have the wires attached to the switch which is part of the casing. This switch has the switch attached to the internal housing, I haven't removed it as yet to take a closer look - but I'd be surprised if it had a neutral in it, the rest of the switches in the house don't have neutrals.

View: https://Upload the image directly to the thread.com/a/cY0i2z8


Thanks!
Hey did you ever try this out? I'm currently in the same situation and would love to know if it worked.
 

Reply to Making Extractor Fans smart with Shelly in the UK Electrical Forum area at ElectriciansForums.net

Similar Threads

Hello, I'm swapping my extractor fan in the UK and I have bought a Turkish extractor fan stupidly and the connections you can see in the picture...
Replies
1
Views
323
Thinking a 240V AC relay activated by two independent light switches could be used to switch power to a shared inline extractor fan. The fan...
Replies
31
Views
1K
Hi Customer has an extractor fan that’s inside the shower cubicle high up on the wall. The extractor fan has no form of isolation and is wired...
Replies
8
Views
1K
1964 house old style wiring Need to wire a extractor fan up Is it possible to wire the extractor fan to report switch there's 2 red wires in the...
Replies
14
Views
925
Need to replace an old Vent-Axia extractor fan as the pull chord no longer works. I bought this -...
Replies
19
Views
1K

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock