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> Humidistat Wiring, Help.
harmudge
post Nov 14 2006, 06:01 PM
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I am asking this question on behalf of a friend who does'nt have a P.C so hence no internet connection.

He bought a fan controller and humidistat for his grow space a while back but he does'nt think he has it wired up correctly. Pic's of equipment below.

The controller is controlling the fans O.K it's the humidistat he's having problems with.
He is using two fans, one as an extractor and one as an input. (Obviously) cool.gif

The humidistat is supposed to switch the fans on, when the RH go's above a set value that you dial in to the little box by way of the adjustable wheel.

He currently has both fans wired into the controller and the Humidistat is also wired into the controller as per the wiring diagram that came with the controller, but when you look at the wiring diagram for the humidistat it shows a fan wired into the humidistat box. Which one do you follow ???
Also on the humidistat there is only one hole, which is for the connection to the fan controller.

Is there anyone else out there using one of these, or are there any sparkys in the house that could help him out ???

Thanks in advance.


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harmudge
post Nov 15 2006, 10:01 AM
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No Sparky's around ??? cry.gif
No one else using this gear ??? cry.gif
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Scribb|e
post Nov 15 2006, 10:07 AM
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Could you re-phrase your question, maybe, or perhaps you might have the diagram(s) that you can post, or a link to them? yinyang.gif


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cf
post Nov 15 2006, 11:03 AM
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not too sure about your electrical problem but i thought i'd just tell you about my humidistat experience.

initially i had a humidistat wired into my board (along with a normal temperature stat) set so that if the humidity in the room rose above a certain level the fan would kick in.

what actually happened was that when the RH of the air outside the box was quite high the stat would never turn off as it was constantly pulling wet air in through the intakes and the humidistat picked this up and kept the fan on .
now i guess if you have an unlimited supply of dryish air hovering around your intake then its not going to be a problem but my humidistat set up only worked on nice dry summer days (i.e. not a lot rolleyes.gif )
putting the fan on a timer so that the air was exchanged on a cycle and allowing the light (lights on) or a heater (lights off) to heat the air and drop the RH solved the problem.


hope this helps

cf


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harmudge
post Nov 15 2006, 08:13 PM
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QUOTE(cf @ Nov 15 2006, 11:03 AM) [snapback]760944[/snapback]

not too sure about your electrical problem but i thought i'd just tell you about my humidistat experience.

initially i had a humidistat wired into my board (along with a normal temperature stat) set so that if the humidity in the room rose above a certain level the fan would kick in.

what actually happened was that when the RH of the air outside the box was quite high the stat would never turn off as it was constantly pulling wet air in through the intakes and the humidistat picked this up and kept the fan on .
now i guess if you have an unlimited supply of dryish air hovering around your intake then its not going to be a problem but my humidistat set up only worked on nice dry summer days (i.e. not a lot rolleyes.gif )
putting the fan on a timer so that the air was exchanged on a cycle and allowing the light (lights on) or a heater (lights off) to heat the air and drop the RH solved the problem.
hope this helps

cf


So the Humidistat is probably a waste of time, and probably better off without it.

Scribble,
thanks for the reply but cf has pretty much answered the question. "They are a waste of time & cash".
I will tell my mate, that's he's probably better off taking it down and flogging it on a well known auction site.

Cheers Guy's,

Harmudge.
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harmudge
post Nov 25 2006, 04:56 PM
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Humidistat question brought back to life, lol.gif.

My mate, who I asked the original question for has decided he still wants to try and get his Humidistat to work.

"No laughing now" at our pathetic effort to draw the wiring diagram as supplied with his Stat and Fan controller.
I know it's pathetic but what else can you expect from two grown men, rofl.gif

He has followed the first diagram, as supplied with the Fan Speed Controller.
The other diagram is what came with the Humidistat.

The problem to re-cap is -

There is power going to the Humidistat as the LED's are lighting up but do not switch the fans on, when the RH rises above the values set on the adjuster.

He only has one length of 3 core cable with the earth taped off running from the Humidistat to the Fan Controller.
He taped the earth off, as there is only a live and neutral contact on the Humidistat's circuit board along with the terminals marked on the Humidistat diagram - NO, NC & C.

Looking at the Humidistat diagram it looks like you need to connect a fan directly to the Humidistat but when you look at the Fan Controllers diagram it shows that both fans and the Humidistat should be wired into the Controller.

The fans are working fine with the Fan controller.

Anybody a sparky or duct fitter ??
Anyone any ideas ??

Diagram 1 - TW2 Fan Controller
Diagram 2 - Humidistat.
Attached File(s)
Attached File  TW2_Wiring_Diagram.bmp ( 341.14K ) Number of downloads: 37
 
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harmudge
post Nov 25 2006, 04:57 PM
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Humidistat wiring diagram.
Attached File(s)
Attached File  Humidistat_Wiring_Diagram.bmp ( 287.98K ) Number of downloads: 74
 
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harmudge
post Nov 25 2006, 07:43 PM
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Just been thinking long and hard and looking at his wiring diagrams again.

Looking at the HIG diagram, it looks like he is supposed to be running the power from the mains through the HIG first, and then into the fan controller??

Then I look at the TW2 diagram and you have the current running into the terminals on the far left of the diagram with the HIG running into the terminals on the far right??

So do you think that he is supposed to run the leccy from his mains to the Hig first then into the TW2 ??
But then will he still need to connect his HIG to the terminals on the far right of the TW2 ??

I think there is only one hole for getting cable through, so if he's got to do the above he wont have the space for all the cable to fit through the hole.

I saw peep's DIY jobs, and they seem to run into a junction box, do you think he could wire it up using a junction box or something.

"Someone out there has got have one of these, or has fitted them in work or even sells them". 34.gif 34.gif
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