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circuit
A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by an overcurrent or short circuit. Its basic function is to interrupt current flow to protect equipment and to prevent the risk of fire. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliances, to large switchgear designed to protect high voltage circuits feeding an entire city. The generic function of a circuit breaker, or fuse, as an automatic means of removing power from a faulty system, is often abbreviated as OCPD (Over Current Protection Device).
I have a Vaillant eco plus 837, year installed 2008.
It works well. We have one large zone for the house with 13 rads running off it. We also have an UFH zone in the kitchen. Near the boiler I have 2 port valves which control this part of the system.
The boiler has been loosing pressure...
Hi,
I’m looking to find a replacement Collector circuit pump for a ground source heat pump. This is the pump on the brine circuit. The pump I have is no longer supported by the manufacture.
It’s a Wilo TOP-S25/7.5
Any recommendations would be very welcome.
I have recently had a new lpg valiant boiler fitted but a few weeks previous I had to have a new circuit board fitted to the old boiler, my question is would anyone be interested in buying the almost new one? It cost £280 but I would be happy to get £100 back I can post it.
Cheers Steve.
This morning woke up to no central heating, but the hot water had been on earlier in the morning.
I checked the programmer and it was indicating CH was on.
Went to the room thermostat and it didnt click when rotated, but then started clicking without any input.
I had a spare room thermostat...
Hi, I would really appreciate some advice on a proposed change to my central heating circuit. I am able to divert excess electricity from my recent solar PV installation to one (or two) hot water tanks and I would like to plumb in a small hot water tank in parallel with my central heating...
Hello,
I'm looking at installing a new central heating system with UHF on the ground floor and normal rads on the 1st Floor. The design was initially to have at its heart an Ideal System Boiler and a Telford Tempest 500l Indirect Cylinder but I'm considering changing/modifying this design to...
Hello,
I am new to the forum and certainly not a plumber so please forgive me if my questions are particularly stupid.
1) I am renovating a house and the heating system has been removed to be replaced from scratch.
To reduce costs I am attempting to do the first fix myself.
The plan is to send...
I just bought a Biasi 25c Combi boiler and I can't understand what the Main Circuit Drain Valve is for. It has a screw in plastic end so doesn't look like it's designed to attach a pipe to it to drain the CH system and even it did, it's higher off the ground than all the radiators so wouldn't...
Hi everyone,
In my house the boiler (standard heat only) is in the garage and the flow and return run in 28mm under the first floor bathroom and into the airing cupboard across the landing where the cylinder, pump and motorised valve are
I want to put the bathroom towel rail on the main...
Hi,
I have a Y Plan system with Glowworm HX system boiler vented system. The system as originally fitted has one radiator without TRV (Landing) but also has a gate valved controlled by-pass. The pump is controlled by an output from the boiler.
Many years ago I added an Honeywell ABV and this...
Hi. Just trying to get my head around how this relates to the temperature drop across the circuit. Not disputing that the two are related (obviously we measure temperature as that is easier) but I don't understand the process. This came up on another thread and I didn't want to sidetrack the...
The main circuit board has gone 3 times in the last 3 months after heavy rain. I have a maintenance contract with British Gas but they will not keep replacing the board FOC. How can I stop his happening? The boiler is 7 years old and I have not had this problem until recently so what will have...
Just been to a customer where on of our installers fitted a new viessmann heat only. They have an issue with the boiler not switching on. Talking to the customer over the phone the problem sounded like a blockage so I suggested a powerflush. Anyway after today's visit I found that he has a...
Hi, everyone - I hope someone can point out the obvious thing that I'm sure I've overlooked.
I have a DHW problem.
I have a 210 litre indirect cylinder (Megaflo) with secondary circulation.
There are 9 'drops' off the hot loop - all at the far end of the loop. Not all of the pipe run is...
Afternoon all.
After a bit of advice/guidance.
I'm currently refurbing my 1st-floor bathroom and the ancient plumbing system in the house whilst I'm at it.
It'll have a shower, toilet, basin and a standard size bath. I'm planning a secondary circuit (in copper) for hot water (22mm in and a...
Hi I have a thermostat shower which replaced the previous electric shower. I was checking my fuse box in the cupboard and the electric shower circuit breaker is down (off), does that mean it is safely turned off.
Just wanted clarity that if a circuit breaker is in the down position that means...
Hi, hope someone can help me find a solution to this problem please.
I have 3 wet, stainless steel, ladder towel rads fed from pressurised ch/hw system including ufh throughout(no other rads). House was built 2 years ago. We had a tablet salt water softener fitted 3 months after moving in...
Just about to remove a rad for plaster, but it’s on a UFH manifold.
Having not removed one on a UFH manifold before, wanted to check the process with minds more in the know.
Is the following about right?
• Close off rad circuit actuator/pin with decorating cap, to stop flow.
• Remove rad in...
Yesterday we had an "installer" come and try to install a new WB Greenstar 25 boiler while I was at work. When I got home, my wife said that it didn't work when he tried connecting it to the fused spur switch, so he then tried adding a three pin plug to it, but that kept tripping the the fuse...
Hello,
In my house I have UFH on the ground floor. It works in a very strange way. I am sure that it never heats up well because I have never had warm floor(I set 21 degree, that's low but I should feel it at least), but I also see some issues. All 6 circuits are for the same room and I do...
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