No "CH Off" or "HW Off" wired in on the

[westyrugby]

Hello,

Never knew about this site until I decided to fit my own kitchen - now feels like I have never been off it.

Have a gravity hot water/pumped central heating system. Had a horstmann Tiara 425 programmer (interlocked) which has decided to retire itself. Have purchased a Drayton LP722 to replace it as it has more options.

Tiara wiring: (2 & 5 looped from live for mains voltage systems)
EARTH Not Wired (Earthed straight to socket casing)
NEUTRAL Wired
LIVE Wired
1.HW ON Wired
2.SPARE From Live
3.HW OFF
4.CH ON Wired
5.SPARE From 2
6.CH OFF

On the Drayton LP722 this equates to:
(assuming the links that are in the SPARE terminals of the tiara are not needed)

NUETRAL Same as tiara
LIVE Same as Tiara
1. HW OFF
2. CH OFF
3. HW ON 1 from Tiara
4. CH ON 4 from tiara

Seems simple but am I ok to proceed with no HW OFF or CH OFF as per the Tiara. Most forum posts seem to indicate you do not need a CH OFF but cannot find anything about the HW Off (or does the programmer have this built in or something)

Thanks in advance

 

[seco services]

wrong post

 

[Terrywookfit]

is it s plan or y plan system ?

I think the clue is "Gravity hot water"

Youy do not need an off!

 

[seco services]

is it s plan or y plan system ?

I think the clue is "Gravity hot water"

Youy do not need an off!

i was in the wrong place anyway.

like you say gravity hw

 

[westyrugby]

Cheers.

Seems blindingly obvious now but at the time!!!!!!

WR