Can Someone Explain my system

[Demarcation]

Ok, so below are two images, one lays out the pipe work and the other the electrics, With the pipework, there is some that i cant see so i just labled the ends. (in loft have since discovered two tanks are joint at base)

My problem is that when my controller calls for central heating, it only works if the hot water is also being called.

I want it to work independantly as well.

Hopefully i have provided enough info.

Horstmann C27 Controller
Worcester GREENSTAR 15Ri Boiler
Drayton Mid Position Actuator - BGMUSP-23



View attachment 22931

View attachment 22932

 

[Chalked]

With that set up you should be able to control seperately. Check the back of the programmer for a gravity/ fully pumped switch.

 

[stevetheplumber]

cant open the pictures

 

[PlumbBobBob]

cant open the pictures

neither can i

 

[mountainman]

Me neither!

 

[joni os]

Plus 3 above.

 

[plumben]

Pictures not working for me

 

[Chalked]

I can't see them, but he has a three way valve, so will be fully pumped.

 

[Roger Welton]

Can't see pics either but my guess would be the 3 port not making the 2nd microswitch.

 

[Demarcation]

The images were working i will re-upload them

 

[Demarcation]

Ok, i switched the controller to gravity feed mode and now the heating works because anytime the heating comes on it also turns the hot water circuit on as well and heats the tank.

catch appears to be when the tank reaches temp the call to the boiler stops and teh central heating stops......

i cant seem to have only teh heating on...any ideas


looks to me to be an electrical problem, any idea how to re-wire?

 

[AlexGas]

looks to me to be an electrical problem, any idea how to re-wire?

I’d say, if you are not sure what you are doing, get a professional in to sort out your wiring.

 

[doitmyself]

Are you sure it's a mid-position valve, not a diverter valve? (Post pic of valve label if not sure)

If it is a mid-position, there should two wires linked to the valve grey wire: one from the cylinder stat SAT terminal, the other from the Programmer terminal 1.

The prog switch will need to be in the P(umped) position - when the wiring has been sorted

 

[Demarcation]

Its defiantly a Drayton Mid Position Actuator - Model number : BGMUSP-23

Installation guide at draytoncontrols.co.uk/WorkArea/DownloadAsset.aspx?id=10510

 

[Demarcation]

I’d say, if you are not sure what you are doing, get a professional in to sort out your wiring.

Happy to wire, I'm perfectly competent, and any advice I get here I will verify myself the configuration and make sure I'm happy with it first.

I have a good idea what the solution to the problem might be but I'm looking for experienced people to guide me and I can just say 'that makes sense'

 

[gmartine]

How long have you had this problem?

 

[Demarcation]

Are you sure it's a mid-position valve, not a diverter valve? (Post pic of valve label if not sure)

If it is a mid-position, there should two wires linked to the valve grey wire: one from the cylinder stat SAT terminal, the other from the Programmer terminal 1.

The prog switch will need to be in the P(umped) position - when the wiring has been sorted

Ok, so when H/W is Off that makes the grey live on the actuator, that wouldnt call the boiler and pump to run??? or would it?? See new purple cable in attached




- PROPOSED PURPLE CABLE NOT YET DONE

 

[Demarcation]

How long have you had this problem?

I moved in recently, took rads stright off wall, and have just reconnected them. I got a new controller to replace an old pottermon mini minder, that only had two time zones over 24 hours and ran both HW and CH together.....now i'm trying to edit it to allow CH seperate from HW

 

[gmartine]

I'm not completely sure of the forum rules about assisting amateurs to undertake their own wiring. Still I suspected you were a DIY'er from the onset because they all seem to think they're competent, good luck.

 

[Dotty]

Competence is measured. Not assumed.

You need a competent person with a minimum of part P to rewire your system.

Please call one in. Thank you.

Thread closed