Boiler wiring!! Help

[R1nutty]

Hi
I recently posted a thread about using a sundial wiring center a plumber supplied for the job.
In the end I thought id use it for an s plan.
everything works fine, valves open and close as should and boiler fires, all ok.
however both the cylinder stat and the room stat call for heat (both honeywell) call for heat when the
time clock is off? Almost like they bypass the clock.I've got my head scratching. Time clock is a horseman h21xl.
any help would be appreciated.

cheers

 

[Octopus]

Hi
I recently posted a thread about using a sundial wiring center a plumber supplied for the job.
In the end I thought id use it for an s plan.
everything works fine, valves open and close as should and boiler fires, all ok.
however both the cylinder stat and the room stat call for heat (both honeywell) call for heat when the
time clock is off? Almost like they bypass the clock.I've got my head scratching. Time clock is a horseman h21xl.
any help would be appreciated.

cheers

This doesn't make complete sense, but would suggest a cable or 2 in the wrong place.

Sure if the room stat and/or the tank stat call for heat, and the timer is set not to run, then nothing should happen.

 

[R1nutty]

Yeah not sure what wires to move though, if I'd used connector block method it would be more straight forward , but checked everything in Sundial and all seems right.

 

[ImpededLoop]

It sounds like the two stats have permanent live feeds rather than switched feeds from the two channels on the time clock.

 

[telectrix]

what he said. ^^^^. with the time clock off for both heat and hot water, check if you have 240V at the stat/s. if so, then this needs to be altered so that the stats only receive 240V when time clock is ON.

 

[Leesparkykent]

Have you cut the correct links in the wiring centre if it's the circuit board type? Link 1 for programmer and not basic time clock, link 2&4 and link 3 if the boiler is wired for pump over run.

these links require cutting for an s-plan.

if it's not the above check the programmer is wired correct hw on=1, ch on=4 with a link from L-2,2-5.

 

[R1nutty]

Hi I cut link 2 & 4.
do I need to cut link 1 aswell then?

 

[R1nutty]

All wiring in programmer check and correct, maybe it's just link 1 I need to cut as well then

 

[Leesparkykent]

Hi I cut link 2 & 4.
do I need to cut link 1 aswell then?

Yes you do need to cut link 1 if using a programmer.

in the lid of the wiring centre it will say if using programmer (not basic time clock) cut link 1.

 

[Geordie Spark]

Yes you do need to cut link 1 if using a programmer.

in the lid of the wiring centre it will say if using programmer (not basic time clock) cut link 1.

A case of RTFM then??

 

[Leesparkykent]

A case of RTFM then??

It took me a couple of seconds to work out what RTFM meant then lol

 

[telectrix]

refer to friggin' masochism?

 

[Geordie Spark]

It took me a couple of seconds to work out what RTFM meant then lol

Y'see .. I told you if you stayed long enough you'd learn something! :sailor:

 

[telectrix]

Y'see .. I told you if you stayed long enough you'd learn something! :sailor:

what happened to IYCFIWAMHIWAH.

 

[Geordie Spark]

what happened to IYCFIWAMHIWAH.

Too many letters.

It confused me.