warm air unit and combi

[diditrain]

Hi all, after some help if anyone has any experience.
Has anyone ever connected up a johnson and starley warm air unit that is also linked to a Worcester combi boiler, as i am struggling to get my head around it?
The warm air unit is to have a thermista-stat stat connected to it and the combi is going to be fitted with an integral timeclock only.

The link between the two is basically the flow and return pipework

http://i777.photobucket.com/albums/yy57/screamingskull/waunit003_zpscd37a044.jpg

 

[Farmelectrics]

cant help myself but phone up there tech department

 

[davesparks]

Ok, so what do you want to know?

 

[diditrain]

Ended up just using a normal mains voltage roomstat and just ignored the thermista-stat connections.
When you connect a thermista-stat it gives you a 230v output on what they refer to as the high voltage terminals. I was concerned about bringing a 230v switched live back from the timeclock and how it would interact with the thermista-stat which gets connected to what they refer to as the low voltage terminal block.
If you get my drift

 

[davesparks]

I hope the thermista stat you are talking about isn't vital to the correct operation or even a safety feature then if you have just ignored it!

 

[diditrain]

No it states in the manual how it works with or without a thermista-stat fitted