Heating Programmer

[gordy13]

Hi all

does any one know where i can source a cheap Programmer. It is an INVENSYS SM1. Plumbcentre sell them for £60 but as always i want to save some cash (before xmas!). Second user is not a problem.

Thanks
Gordy13

 

[Diyisfun]

Ebay..not bad place to start

 

[gordy13]

Cheers mate, already tried but they aint got the model i am after. I would prefer to use the same as it is a simple swap. If i had the knowledge i would buy the cheapest peice of kit i could find as i am probably moving in the next few months.

 

[bster]

why does it have to be the same model?

 

[gordy13]

I am not too confident with wiring (when i was younger i would have a go at anything) As the backplate and wiring is already there it is a simple plug onto the backplate. The controller has 6 prongs which simly push onto the backplate.

 

[Ratter]

I'm only an amateur but I'm pretty sure that those backplates are standard and lots of programmers are interchangable with the same 6 prongs.

You ought to be able to get something from a shed for more like £30. The larger B & Q's have a good display of them.

 

[gordy13]

Thanks for that advice mate, i have looked at the wiritn and it looks like there are: common connection for N, common for L, and earth. What i dont understand is there is a red wire connected to the backplate (on its own) which appears to come from the boiler. I reckon i am going to go to a supplier and get them to take me through the itstallation process step by step. If i can save £30 it is worth the effort. (i sound like i am Scottish. LOL).

 

[bster]

i have the wiring for this programmer in front of me

from terminal N, L, 1,2,3,4

N, L, Com, OFF, ON, Spare. (link L and Com for 240v switching)

maybe someone can recommend a suitable programmer from this info and tell you how to wire it. Might help if you state what type of system it is switching.

 

[Ratter]

The programmer is basically just a timed switch or switches, so as well as the LNE coming in, there will be switched live output - often separate wires for HW and CH, sometimes combined. This will go off to the boiler and room and or cylinder thermostats.

 

[gordy13]

No problem, the programmer operates an Ideal mini combo boiler. One day timer for heating only.

I have spotted a Siemens in wickes for £28 which looks similar.I will go and have a look tommorow. Thanks for the help and i will let you know how i get on. I am sure if i have any problems i will get through it with help on here.

Thanks again

Gordon

 

[bster]

if its for a combi then its simple
A 1 channel programmer or programmable room stat will do the trick, piece of potatoes to fit as well.

 

[gordy13]

Hi All

fixed
Got a seimens LCD programmer, had to alter 2 wires on the backplate then muck about with the times/selection ect and bingo.

Thanks for your help.

Gordon