I have got an old Servowarm boiler (elite 50) and the pump went on it.

I have replaced the pump and have noticed that a bi-metallic strip was
broken in the timeclock( beleived to be old horstmann emerald)

I have got an electrician to install a new Drayton LP241 programmer
along with a seperate timer for the pump overrun.

All works fine except that from the boiler control drayton show 3 wires
coming from the control to the programmer (Live Neutral and earth) but
mine has 4 wires from the control (Live Neutral Earth and a Red wire)

My electrician has wired the Blue to Blue on Programmer terminal, Earth
to the earth and the red to position 4 on the terminal block but the
live is not connected.

Can anyone tell me if this is correct and if not which wires go where?

I have no room stat or auto valve for hot water.

Each radiator has a stat and the CH/Hot water valve is manual.

Thanks




--
Nigel Hewer

In an earlier contribution to this discussion,
Nigel Hewer wrote:

I have got an old Servowarm boiler (elite 50) and the pump went on it.

I have replaced the pump and have noticed that a bi-metallic strip was
broken in the timeclock( beleived to be old horstmann emerald)

I have got an electrician to install a new Drayton LP241 programmer
along with a seperate timer for the pump overrun.

All works fine except that from the boiler control drayton show 3
wires coming from the control to the programmer (Live Neutral and
earth) but mine has 4 wires from the control (Live Neutral Earth and
a Red wire)

My electrician has wired the Blue to Blue on Programmer terminal,
Earth to the earth and the red to position 4 on the terminal block
but the live is not connected.

Can anyone tell me if this is correct and if not which wires go where?

I have no room stat or auto valve for hot water.

Each radiator has a stat and the CH/Hot water valve is manual.

Thanks

If the boiler provides pump over-run, it needs a permanent live in addition
to the switched live. The boiler only fires when the switched live is on,
but uses the permanent live to power the pump during the over-run period
when switched live is off.

If you are controlling pump over-run with a separate timer rather than
letting the boiler do it, the boiler won't need a permanent live - but your
over-run timer *will*.
--
Cheers,
Roger
______
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On Wed, 6 Dec 2006 20:11:33 +0000, Nigel Hewer
wrote:


I have got an old Servowarm boiler (elite 50) and the pump went on it.

I have replaced the pump and have noticed that a bi-metallic strip was
broken in the timeclock( beleived to be old horstmann emerald)

I have got an electrician to install a new Drayton LP241 programmer
along with a seperate timer for the pump overrun.

All works fine except that from the boiler control drayton show 3 wires
coming from the control to the programmer (Live Neutral and earth) but
mine has 4 wires from the control (Live Neutral Earth and a Red wire)

My electrician has wired the Blue to Blue on Programmer terminal, Earth
to the earth and the red to position 4 on the terminal block but the
live is not connected.

Can anyone tell me if this is correct and if not which wires go where?

Shouldnt the electrician know whats right or wrong??

In an earlier contribution to this discussion,
Psst wrote:

On Wed, 6 Dec 2006 20:11:33 +0000, Nigel Hewer
wrote:


I have got an old Servowarm boiler (elite 50) and the pump went on
it.

I have replaced the pump and have noticed that a bi-metallic strip
was broken in the timeclock( beleived to be old horstmann emerald)

I have got an electrician to install a new Drayton LP241 programmer
along with a seperate timer for the pump overrun.

All works fine except that from the boiler control drayton show 3
wires coming from the control to the programmer (Live Neutral and
earth) but mine has 4 wires from the control (Live Neutral Earth and
a Red wire)

My electrician has wired the Blue to Blue on Programmer terminal,
Earth to the earth and the red to position 4 on the terminal block
but the live is not connected.

Can anyone tell me if this is correct and if not which wires go
where?

Shouldnt the electrician know whats right or wrong??

I admire your faith! g
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!