Panasonic whisper green fan/light with humidity sensor

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Eryals05

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I've just recently installed a whispergreen fan and I am now looking to install one at my own house but with the humidity sensor installed. I still want to control my fan with my fan timer which is a single pole switch but I also want the humidity sensor to work indepently, and not have to add a switch. I've read all the material and watched the installation videos. But I have an idea that may or may not work so I thought I'd run it by other people to see what they think. There are 2 signal wires in the fan and when the switch is open the fan runs in the humidity mode, so you need a constant feed to the fan. But like I said I also want to turn the fan on with a switch when in use, I mainly want the humidity sensor to work since people at my house like to turn the fan off after a shower for some reason. I did a little diagram of what I'm talking about. If anyone could give me some feedback that would be great.
 

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All you have to do is install a single pole switch on the red leads. When the switch is closed (on) the fan will run. When the switch is off the fan will be in automatic mode.

You don't really need a separate timer. The fans have optional timer modules but even without the timer module the fan will continue running ~20 after the manual switch is turned off.
 
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Right but I don't want to add another switch and I want to keep my fan timer. People at my house can't figure out how to turn the thing on or off as it is. So I pretty much wanna make it dummy proof so that when they decide to turn it on it runs, but then if they decide not to turn it on it'll run automatically. I want to keep the timer. Another issue is they'll use the timer while showering and then the time will run out, then they just leave the fan off. I want to keep the timer so the light will shut off and the fan will run with the humidity sensor




curt swartz said:
All you have to do is install a single pole switch on the red leads. When the switch is closed (on) the fan will run. When the switch is off the fan will be in automatic mode.

You don't really need a separate timer. The fans have optional timer modules but even without the timer module the fan will continue running ~20 after the manual switch is turned off.
Click to expand...
 
Eryals05 said:
Right but I don't want to add another switch and I want to keep my fan timer. People at my house can't figure out how to turn the thing on or off as it is. So I pretty much wanna make it dummy proof so that when they decide to turn it on it runs, but then if they decide not to turn it on it'll run automatically. I want to keep the timer. Another issue is they'll use the timer while showering and then the time will run out, then they just leave the fan off. I want to keep the timer so the light will shut off and the fan will run with the humidity sensor
Click to expand...

Without trying to be a pain, why is adding another switch a big deal? You could free up a spot in a multi gang box by using an over/under switch if you dont want to tear up drywall increasing the gang size (which may not be possible anyway)
 
I assume on your schematic "Fan/Switch" is your timer?

The fan needs unswitched power for its humidistat function. There's no need to use the NC relay contacts or have two different circuit paths to get power to the fan. Just run a single unswitched feed directly to the fan.

Cheers, Wayne
 
Mainly because it will never shut off. I want to keep the timer so it will shut off. Humidity isn't the only thing an exhaust fan is used for if you know what I mean



JFletcher said:
Without trying to be a pain, why is adding another switch a big deal? You
could free up a spot in a multi gang box by using an over/under switch if you dont want to tear up drywall increasing the gang size (which may not be possible anyway)
Click to expand...
 
Yes the fan switch is the timer. And if you look at it it powers the coil turning on the fan and light (which I forgot to put on there) so that when the switch is off the humidity sensor works but when the switch is on it powers the fan and the light. I understand what everyone is saying with adding another switch and everyrhing but humidity isn't the only thing a fan is used for. I want to be able to turn the fan on when I want and also have the humidity sensor work while the switch is off.



wwhitney said:
I assume on your schematic "Fan/Switch" is your timer?

The fan needs unswitched power for its humidistat function. There's no need to use the NC relay contacts or have two different circuit paths to get power to the fan. Just run a single unswitched feed directly to the fan.

Cheers, Wayne
Click to expand...
 
Why don't you install an occupancy sensor and set it to 20-30 minutes?

Which model do you have?
 
Eryals05 said:
And if you look at it it powers the coil turning on the fan and light (which I forgot to put on there) so that when the switch is off the humidity sensor works but when the switch is on it powers the fan and the light.
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Yes, doing that will require a relay, but you can simplify your wiring diagram and just feed the fan with a constant power source. The fan only runs when the two red wires are connected, so the relay is just needed to change the "switched hot" from the timer into a "switched connection" of the two red wires.

BTW, I have the identical set up at home to what you are trying to do and wired it as I just described. I used an RIB for simplicity.

Cheers, Wayne
 
I was planning on using a rib relay after thinking about it some more. Could you show me a wiring diagram of what you did or a picture?





wwhitney said:
Yes, doing that will require a relay, but you can simplify your wiring diagram and just feed the fan with a constant power source. The fan only runs when the two red wires are connected, so the relay is just needed to change the "switched hot" from the timer into a "switched connection" of the two red wires.

BTW, I have the identical set up at home to what you are trying to do and wired it as I just described. I used an RIB for simplicity.

Cheers, Wayne
Click to expand...
 
Eryals05 said:
I was planning on using a rib relay after thinking about it some more. Could you show me a wiring diagram of what you did or a picture?
Click to expand...
I'd have to look up the proper schematic symbols, so here's a simple text description:

Unswitched power -> Timer (providing switched power) -> Relay 120V coil (and to light if you want it on the same timer)

Unswitched power -> Fan

2 fan red wires -> NO contacts on the relay

I chose not to use an occupancy sensor, as I wanted to be able to run the fan longer after showering than after other uses. (I'm not using the humidistat module, I'm using the constant low speed module so the fan doubles as an exhaust-only fresh air supply for a tight house in a mild climate. In which case the red control wires trigger a "boost" mode to a higher speed.)

Cheers, Wayne
 
wwhitney said:
I'd have to look up the proper schematic symbols, so here's a simple text description:

Unswitched power -> Timer (providing switched power) -> Relay 120V coil (and to light if you want it on the same timer)

Unswitched power -> Fan

2 fan red wires -> NO contacts on the relay

I chose not to use an occupancy sensor, as I wanted to be able to run the fan longer after showering than after other uses. (I'm not using the humidistat module, I'm using the constant low speed module so the fan doubles as an exhaust-only fresh air supply for a tight house in a mild climate. In which case the red control wires trigger a "boost" mode to a higher speed.)

Cheers, Wayne
Click to expand...


thanks. of course after i asked for a diagram or picture i looked at a rib relay and it came to me what i need to do. thanks alot
 
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