so do mean, the first stat allows the water to heat up to 90 then switched the pump on.
The water then flows through the heating system/hot water pipes and returns through a pipe that has another stat on it.
If the return water is below 45 degrees it turns pump off?
right heres what im thinking so far.....
Say we set the pipe stat on the flow to 60degrees, its should want to heat that water to a minimum of 60 and turn off when it reaches temperature.
This water then flows up through the radiators and comes back on the return pipe.
Bare with me i'm still...
what if i redesigned it?
Do you think it would work if i pulled out all the wiring ,started again by fitting new pipe stats to the flow/return pipes(both set at 60degrees).
and linking these into a 2 channel programmer/room stat/cyliner stat?, kinda like a conventional system without a valve?
yes dave i think i understand what you mean, i definetly think that the intended design of this sytem is one which these pipe stats or at least one of them regulates the temperature of the water in the pipes much like the stats that are built into modern day combis etc.
There are however, no...
im findinng it hard to explain the actual problem because i dont understand how the system works. I keep thinking about the pipe stats, ive never came across a stat that when you turn it up it clicks off.
the plot does thicken though, the woman says that the coal burner was replaced by a...
i imagine yes they are there to act as the boilers stat to regulate the water and stop it boiling like a big kettle. They both look the same. They are located under a kitchen worktop partially boxed in, not very good access, i have access to the junction box though
on a job doing a bathroom and the womans asked me to have a look at her heating system.
its a coal burner. ive never worked on one of these so im not sure how its supposed to work.
im very experienced with central heating systems in general though.
right so here it is.
main fuse supplies a pipe...
right so i got a wee job for a guy today. he and his wife have just moved over from canada and they have brought a small collection (5-6)
of lounge lamps. He wants me to convert them from the 2 pin plug to the 3 pin variety.
Can i rewire them and terminate an earth onto the metal casing, the...
could anyone reccomend a good book for a young electrician trying to get his head around heating systems?
Ive started to working for a compony that are heavily based in this area and i really need to sharpen my skills quickly.
Most jobs i go to these days i will be working on a system that ive...
trying to get another battery for this gun (it only came with one battery)
Seems like all dewalt replacement batteries i see are not the same shape as this one.
Any clues where i can pick one of these up? Its not fun having just one battery
yeah i know what you mean, seems to be a bit grey in this area, i think to be on the safe side i would go with the secondary circuit being the start of seperate circuit, its fused and it operates at a different voltage, thats my view anyway.
i just think that with the way the job market is...
yeah thanks darkwood, good noises from you. Truth be told this post doesnt actually refer to an ongoing job. Im goin over stuff that im not too sure about the now, trying to get clued up, qualified in febuary and im quickly finding that theres a lot of things i dont know about the trade. I'll...
hi again, i am getting confused with these volt drop calculations, can you help? heres what ive got so far:
Ib=50w/12V = 4.2A
max volt drop = 4% of 12 = 0.48V
run is 7 metres so:
mV/A/m = 480/29.4 = 16.33
table 4d2b of bs 7671 says a 4mm cable has 11mv/a/m
just seems a bit big?
am i missing...
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