wireless stat help

studentspark · 6 Jun 2011

Need advice on wiring this wire less stat to boiler.

never done this before, could someone tell me it this is right

From fused spur 3 amp

Live to L on receiver
Neutral to N on receiver
Earth to Earth

from receiver to boiler

Neutral to N on boiler
Com to L on boiler
3 on receiver to 4 on boiler
Earth to Earth

Many thanks

Wireless stat Drayton TP5000

http://www.heatingcontrolsonline.co.uk/instructions/TP5000si.pdf

See page 6

Is going to control a Vailant boiler ecotec plus 824 for heating and hot water

See page 27

http://www.vaillant.co.uk/stepone2/data/downloads/d7/42/00/ecoTEC_installation_and_servicing.pdf

EFLImpudence · 6 Jun 2011

studentspark said:
From fused spur 3 amp
Live to L on receiver
Neutral to N on receiver
Earth to Earth

Am having trouble with your link - will keep looking.

from receiver to boiler
Neutral to N on boiler
Com to L on boiler
3 on receiver to 4 on boiler
Earth to Earth

NO Do not alter the supply to the boiler

studentspark · 6 Jun 2011

no supply to boiler yet, plumber has just put it up.

EFLImpudence · 6 Jun 2011

studentspark said:
From fused spur 3 amp
Live to L on receiver
Neutral to N on receiver
Earth to Earth

YES

from receiver to boiler

Firstly to confirm I have found correct unit-
Do you have terminals N L 1 2 3 4.
If so - there are two ways to do it.

1.One wire from Stat to Boiler
Link L to 2 on Stat
One wire from terminal 3 on Stat to terminal 4 on page 26 of boiler manual (and remove link between 3 & 4)
Plus earth at Stat

I would favour option 2 because if boiler is off no voltage even when Stat calling for heat.

2. Two wires from Stat to Boiler.
One wire from terminal 2 on Stat to terminal 3 on page 26 of boiler manual (and remove link between 3 & 4) and
One wire from terminal 3 on Stat to terminal 4 on page 26 of boiler manual
Plus earth at boiler

echoes · 6 Jun 2011

Figure 4.18 on page 29 explains it all.

From fused spur 3 amp
Live to L on receiver
Neutral to N on receiver
Earth to Earth

that's right, but the rest is not.
As EFLI said, don't change the boiler power supply, which should not be connected to any of the stat terminals.

Since your programmable stat combines a clock and thermostat, connect 3 on boiler to 2 (COM) on receiver, 4 on boiler to 3 on receiver (ZONE 1 ON)

Remove link in boiler between 3 & 4.

Also do NOT link 2 on receiver to L, as per page 6 of the stat instructions.

EDIT. Too late again - must read manuals faster. Same as above ^^^

studentspark · 6 Jun 2011

Thanks for taking time to help me here

Yes the stat is LN1234

So I dont send the power to the boiler via the stat controls. OK that makes sense as you want a permanent supply for fan cooling heat exchange
. correct ?

So the boiler has two perm supplies? main power and perm live?

But would I send live and Neutral to the power supply for the boiler via the L and N on the stat, basically looping from the FCU via the stat?

Sorry to be so dim on this , really dont want to blow the PCB

So on stat 2 is perm live and 3 is switch live?

EFLImpudence · 6 Jun 2011

studentspark said:
So I dont send the power to the boiler via the stat controls. OK that makes sense as you want a permanent supply for fan cooling heat exchange

That's correct

So the boiler has to perm supplies? main power and perm live?

Yes totally separate from Stat supply.

But would I send live and Neutral to the power supply for the boiler via the L and N on the stat, basically looping from the FCU via the stat?

Better to do it from load side of FCU.

So on stat 2 is perm live and 3 is switch live?

Yes - well in this case. Better to call 2 common.

echoes · 6 Jun 2011

You take a permanent L, N & E from FCU to the boiler's perm L,N & E, and also to the stat's L,N & E. Loop via the stat receiver if you like or via a wiring centre. (Mine is looped via the boiler

)

The stat terminals 2 & 3 are just a switch, and just replace the link between 3 & 4 on the boiler - connecting 3 & 4 fires the boiler. Hence why you should not link any stat switch terminal to permanemt L.

studentspark · 6 Jun 2011

Many thanks and last question

So you would have two feeds coming from the fcu

One for the boiler and one for the stat ?

EFLImpudence · 6 Jun 2011

I would

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

wireless stat help

Similar threads