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Andrew, the link shows a UPM3 Auto L25-70-130 is that a direct replacement for my Alpha (1.5" connections 5/6 mt head) It is certainly a cheaper option. Thanks

Please advise, I need to replace a 18 year old Alpha UFH manifold pump and see we are now on Alpha3 Are there enough benefits upgrading to an Alpha3 pump to warrant the extra money? My heating system has ten loops (total design flow pressure 3.52m head of water) Your comments appreciated

Thanks

Thanks gas guru How does it vent in the horizontal position? Just curious Paul

Come on lads & lasses in the know re; wilo pump a is it good value? b OK in the horizontal plane? (are there any lady heating engineers on this forum?)

I have a fall off in l/min flow of water in my UFH circuits which, I think, is a 18 Yr old Grundfos Alpha pump issue (circuits balance valves opening correctly, one zone (lounge) requires 2.4 l/min in two loops but cannot achieve more than 1.2 l/min on both circuits, no obvious air issue) I am...

My 17 year old Polyplumb UFH system is showing some reduction of flow across some of the ten loops (based on flow meter readings and getting one room in particular up to air temp) I am also finding little movement in flow between some of the balance valves being fully open / closed so I have...

Thanks oilhead, Do you have any info that would help me find this part?

I am looking for a syncron motor (type used in zone valves) that has a slightly longer gear shaft than the ones used in Honeywell valves. I have a actuator on my "boiler" diverter valve that is driven by above but I am struggling to find a replacement, I know there is motors out there as I have...

Thanks for your reply, the flow meter / valves are on a polyplumb manifold listed at around £13 ea so I will get some after the holiday period. The actuators are Honeywell Z100 BGE that are now replaced with an updated version MT4 230S-NC (£40 incl del) and there are not many listed on Google so...

Please advise, I am finding the following issues with some of the 10 circuits on my 17 year old UFH system: Of the ten circuits (seven zones) there are two actuators that are allowing flow (max 1 lt/min) on no demand and two flow valves that are showing restricted flow on demand (around 1<2...

I have seen some kitchen cupboards at the above measurements, the doors being 32x60mm tulip framed with 18mm MDF centres with standard hinges in a 32x60mm face frame. The concern for me is the lack of adjustment in the hinge. If I went down to a 22X60mm door frame out of popular with 12mm MDF...

With the doors being “inset” not overlaid And being32mm thickness I assumed euro was out of the question Would I be looking for a specific hinge Thanks Paul C

With the doors being “inset” not overlaid And being32mm thickness I assumed euro was out of the question Would I be

I am planning to build a set of wardrobes veneer faced cabinets with painted MDF framed doors inset in a painted face frame (shaker stile) I was thinking 32mm X 60mm wardrobe face frame and 32mm X 60mm door frame with 18mm inset MDF. (six cabinets at 650mm width X 2200mm Height X 600mm depth) My...

Please advise, With the UFH mixing valve set to give 45^ Flow temp To the manifold circuits am I right to expect this temprature To remain constant whatever the flow rate, if any, there is to those circuits? Thanks

One valve has settled down at 46* (the height of the spindle protruding the valve casing measures 5mm) and working ok. The other, with the valve set to minimum, is at 56* (spindle fully in and is 3mm from valve casing) The pump arrow is showing correct direction, pumping water to the "hot"...

Thanks for the response. The UFH kit was supplied by underfloorheating1.co.uk at Carcroft Doncaster I have not got the details of the TMV manufacture but there is a photo attached showing the System installed. I have checked the flow & return circuit and all seems ok. Looking at the attached...

I have a problem with a new installed UFH system as follows. One 46kW oil boiler heating two number 12 port manifolds plus DHW and rads and I am having difficulty controlling the TMV on both manifolds. Having set both manifold mixing valves to around 45* the TMVs don't hold that temp.they both...

Tony, with regards to the water side issues I think there is some useful info. in the threads above to work through. I would start a new thread in the electrical forum section explaining the action of the pump and appending the above wiring diagram. The electricians are always discussing CH...