I definitely need to book a course , 2 days course

Hello Mr Staszak, regarding the bypass yes we install them on the system when we have a Hot Water Cylinder and Central Heating and if having a Combination Boiler with Central Heating and underfloor heating and there is already a bypass inside the boiler do we need to install an extra one outside? I would appreciate your answer. Thank you

Good day, How should the air be vented from the grundfos pump ups 25-60 180 that pumps the fluid down? Does the internal bleeder screw have a special adjustment method?

How about Vaillant 242-5 S.7 Heating mode - pump overrun error - stopped heating

If replacing a pump or pump head, what do the first numbers (i.e. "15" or "25") refer to? I know the second figure (i.e. "50", "60", etc.) refers to the head, and third figure (i.e. "130" or "180") refers to the distance between the 1" or 1½" BSP mounting points, but the first figure is a mystery. Someone said it was port size, but what is that - the internal or external diameter of the incoming pipe, or the smallest pipe diameter in the heating system (I, for instance, have 28mm OD pipe either side of my pump, reduced to 22mm OD for the circulator pipes, and 15mm OD branches to the rads.

Hi, wonder if you can advise me on an issue I am trying to get fixed, I’m not an engineer just a consumer. Here’s a brief outline (this btw is my 96 yr old mothers system)...New boiler installed end of 2016 Ideal Logic +15...early 2017 new Grundfos UPS3 pump fitted...since then I have had Ideal engineers out 3 times in last 2 years due to issues...on first 2 occasions they replaced most of the boiler internals Issues were varied like fault codes, noises etc), after the second visit had to have the pump replaced again same model (April this year) and recently they came out again as there is a loud knocking, popping noise coming from boiler. Sods law the day they came it was not making the noises but I played a video of the boiler/noises and they said immediately its not a fault with boiler but an issue with the water flow through system backing this up with the fact that the temp difference between inflow and outflow pipes was way over the acceptable level. They asked if they could have a look at the pump in airing cupboard and the tank in loft. Using magnets they showed areas that have a build up of sludge and they also said that the new pump had been installed upside down and this could cause issues as it is self ventilating. The boiler is serviced every year (by the company that installed the boiler and 2 pumps) and I accept that the system probably needs a pressure flush to clear this sludge but are they correct that the pump could also cause an issue the way it has been fitted? I ask only to try and clarify the position as I do not want to press this point to hard if in fact it makes no difference which way the pump is fitted. Many thanks for any advice you can offer.

why do you need to remove electrical pump cover to bled pump and in the real wold that screwdriver would not undo bled screw