Connecting extractor fan to controller

[trecital]

Hi, I want to connect an extractor fan to a controller with humidity sensor and run-on timer.

The connection diagram that came with the unit has me a bit confused. The live and neutral connections are obvious,
but the connector for the fan is marked as NO, NC and C, which I understand to mean Normally Open, Normally Closed and Common.
However, that still leaves me blank on how to connect the two wires from the fan!!

Any help would be great.

The control unit is by S&P, called HYGRO 2. Photos of connections and wiring diagram below.




Thanks.

 

[Top Cat]

Hi trecital

From your first post i see that you are a DIYer. I do not want to sound patronising but this is a pretty simple circuit so if you don't know what to do i would get someone in to do it professionally.

As it is a humidity sensor i presume it is for a bathroom. This is classed as a special location so any work needs to be notified to building control.

 

[trecital]

Thanks for the reply Top Cat. Yes, it is a simple circuit. Just not familiar with the labelling of NO, NC and C. I understand their basic meaning, but don't understand their meaning in this particular situation. I'm used to dealing with live, neutral and earth, and household wiring in general.
The location is not classed as a special location. It's just somewhere that I want to control the humidity by simple air extraction.

 

[J&M Electrical]

Very simple to connect up. An electrician would have it done in 5 minutes and possibly only charge you £15.

 

[Knobhead]

Neither drawing is correct. Get an electrician that knows what he’s doing.

It’s not your fault about the drawings.

 

[snowhead]

Assuming the fan is within sight of the controller;

Source live thro' D-P switch to L (in controller)
Loop L to C.
From N.O to fan L. (assuming make on rise, if not, from N.C)
Source N thro' D-P switch to N (in controller)
Loop N to fan N.

Don't forget earth if required.