Pipestats

Zapata123

Hi Ian

Thanks for your reply which I understand and agree with.

These are the settings I will use ie 5 and 15 C for frost and pipestat respectively

Cheers

Zapata123

Out of interest/ curiosity why do Honeywell recommend 25C as the setting for their pipestat . Most posters suggest about 10 to 15 degrees !!

Thanks

AndyPK

The pipe stat setting doesn't matter very much.

At long as it is significantly above 1 and you take into account its tolerance (which is quite a bit on these) it will do the job fine (with little difference to economy)

Zapata123

Thanks Andy

What do you mean by”significantly above 1”. What/ which 1
Thanks

AndyPK

1 degree C

Zapata123

Thanks Andy,

I know the tolerance ( differential ) from Honeywell, which is 10C, so my 15C , from an earlier post should be OK.

All a bit of a black art. !!!

Zapata123

Anyone have any ideas why Honeywell reccomend 25C for the pipestat setting temp. This figure will be 45C or so at boiler , plus the pipestat differential giving 55C. No wonder post on other forums complain of being toasted

Thanks

AndyPK

Outgoing maybe 45
But you are pumping cold water back in so it needs to ensure some warmth is kept in the boiler.

Zapata123

Hi Andy
If the pipestat closes at 25C ( fitted on cold return near boiler) , then the water will be at 25-ish everywhere in the parts that are in the garage. So I don’t see this any different to a cold start on a hot summer morning
What am I missing?

Regards