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Do the above behave like my Honeywell ones in that when opened manually they do not close the microswitch to start the boiler?. This facility is normally used when filling the system.

Posting this here even though I'm not in the UK, it might get a bigger audience! I recently installed a BYRON DBY-223548S wireless door bell (CR2032 button battery) with two "chimers", one is mains powered, the other is powered by 3 AA batteries. I have one installed in the house, it doesn't...

Reading a fair amount lately re these EV granny charging cable plugtops/sockets etc going on fire and wondered how much heat is generated in the fuse itself, not a lot if my tests are to be believed, tests were done on a DC circuit with a battery so maybe more heat generated under AC...

The left hand valve gland nut is impossible to move, is this now just a form of O ring seal?, the right hand valve gland nut (~ 3 year old spare) is quite easy to move and presumably the gland can be topped up like it always could be?. The older one (both 3/4") has a reduced bore of 15.1mm but...

Can someone please confirm that the Boiler Thermostat Range on this boiler is 65C/75C?

Friends new Grant Vortex System Boiler has this AAV? installed, it has a red plastic "cap" on the top which can be turned, is this just a means of shutting off the vent manually?

Just saw this on Boards.ie. https://www.boards.ie/discussion/2058426095/100-000-circulation-pumps-being-recalled

Son in Law sent me on these photos ~ 10 years ago when the Ivar UFH system was being installed in a extension, its worked perfectly since with a oil fired boiler either on its own or with the existing Rads, TMV set to 30C. I can't access it just now, see below. I only came across them recently...

A plumbing friend of mine has been asked to look at installing a Grant 36kW Combi in a system with 12 double rads and asked me to have a look at the MIs and give my opinion of whether the installed 14L EV is big enough to accomodate these 12 rads. I don't know the rad sizes but probably safe...

Often seen posted on various websites re above running out of hot DHW rapidly, and ditto with Gas fired Combis. Oil fired combis have stored primary water which I suppose is a must since they don't modulate and would result in the DHW running hot & cold due to the boiler cycling if the DHW...

Does anyone have any views /experience on/of the above re unstable HW outlet temperatures even with a perfectly operating thermostat which is the same length as the heating element. My views. With this top mounted immersion you will only heat the full immersion length of the cylinder from a...

Neighbour called me to have a look at his boiler which required a top up only a week or so after its first service, both the (Baxi) boiler and the filter were installed around a year ago. I removed a panel to gain access to the filter and found a constant drip from under the lid, so isolated it...

After exactly 20 years of running a Firebird 90S boiler fitted with a Riello G5X burner & a RBL 530 SE control box I'm beginning to wonder whether I have a control box problem or if the logic itself isn't logical. I have never ever got a combustion failure lockout. I have solar thermal water...

I have a 2008 Belling 90E cooker which uses MP-V01-SVC simmerstats, original manufacturer, Invensys. These have a relativey short life of ~ 2/2.5 years. I never see any complaints re this short life as this type of simmerstat must be widely used, wonder is this a fairly typical lifespan?, only 2...

The Hi Limit Stat on this is open circuit and apparently is non resettable?, I'm told its screwed into the immersion element, can it be removed without draining down. Apoligies for bad photo.

Generally, UVCs are installed with the PRV set to 3.0bar and the EV precharge pressure set slightly lower at 2.8bar. I have read of some of these operating "noisly" when drawing off HW or the EV refilling if the dynamic pressure is only 1.5bar/2bar ish, some have got the EV precharge pressure...

My nearly 20 year old burner has decided to act up, (first time, ever), it fires up fine and runs no problem until later in the day when it develops this very short cycling, the flame seems to go out, (NO Lockout) fan continues to run and it refires again about 5/6 secs later, runs for another...

Can someone explain or throw some light on the above, this boiler's hydraulic settings can be set to several modes, constant speed, dp constant pressure (between 100mbar & 400mbar) and dT Temperature Spread (between 10C & 20C). This boiler is having problems in running in either dP or dT modes...

If someone is using WC either with a Boiler or a Heat Pump in a house with UFH only can you please post the WC curve or curves in use.

In view of recent threads re getting boilers to automatically achieve flow/return dTs of up to 20C maybe this will give some idea of how reasonable boiler efficiencies might be obtained by simply adjusting the boiler setpoint temperature with respect to the OAT, (Outside Air Temperature) on...