texas

I dont have any specific data but it is powerful when its working. Re the valve pump pressure. I have a car tyre inflator? Will this give a reading? What are your opinions on putting the Dab System up there? Do you think a loft can handle the weight? As ever many thanks for your time

Hi It wouldn’t let me send a video but I’ve added some pics I am not sure how to work out where the outlet goes? And I can’t see any valve or guage on top of the tank. as an aside the horizontal tank I believe is my immersion tank. Is it also where my regular hot water is stored when I don’t use the immersion (which I almost never do) thanks

The circumference is 169 cm The height is 150 cm I turned off the pump Opened 2 taps to drain about 15 mins of water and it was lacking pressure. The 2 analogue dials didnt move. I think they are broken. I then left taps running and turned pump on at 15.12 I then after 1 minute turned taps off. at 15.49 ie 37 mins later it reached 2.2 and turned off. I will attach a video to try to explain what is up there regarding any valve top (which i cant see) and a question regarding where my hot water is stored. Thanks

ok thanks will do this today. cheers

"I would get that pump looked at for a start. If that was operating as designed then it should have no problem in achieving 3.0bar could give a 71% increase in the accumulator output, refilling time for a 175L accumulator should still only be 11 ninutes or so." Thanks for this i have opened the spreadsheet and note you have some numbers in yellow. Are these numbers i can change? I am not sure what i am supposed to do with these. If you could explain i would be very grateful Sorry for coming across a bit thick i just have limited understanding of this world. But am super grateful for all your knowledge. Thanks

"As suggested upthread, measure the diameter and height and calculate the apparent volume of yr cylinder, though I am surprised there is not a capacity label/rating plate somewhere on it." Do you want me to measure the diameter/circumference of the bit vertical tank? and when you say height do you mean the height of the actual tank or a guide to how far from the ground floor the tank is? "A simple answer may be to fit aeration-type shower heads - by drawing air into the water flow these are supposed to give the sensation of a bigger shower while using less water. They are alleged to work though I haven't tried them myself." Thanks i will look into this.

"This is probably very similar to your pump, your pump has a higher closed valve head of 3.98bar. It should really have no problem in reaching a cut out SP of 3.0bar when the demand finishes, as long as the inlet pressure is > than 0.7bar. How long is it running for before it cuts out at 2.2bar?" Hi do you want me to time how long it takes it to get to 2.2 bar from a standing start? Do you suggest i turn the pump off and allow all the water pressure to be exhausted then turn the pump on and time it? "You might also measure the accumulator circumference with a tape, can then get a good idea of its capacity at 6ft? high." Which bit is this? Is this the tall vertical tank you want me to measure the circumference of?

Is it these? NB I’m not running the taps I just want to be sure it’s these you talk about before I run the taps and monitor,

Thank you for all the above responses. I am a little unsure on a couple of points but will come back to the parts i can find out Regarding the parts i don't understand "it is illegal to create a negative pressure on the incoming cold main supply. A prosecutable offence, no less" What does this mean. What am i doing or suggesting to do that could lead to this? Or am i already doing it? "Its important that the precharge pressure (air end pressure with no pressure at the water end) is set to just slightly less than the minimum required pressure, if, for example, the minimum required pressure is 1.5bar, then the precharge pressure should be set to 1.3bar, if the pump SP pressure is set to its design?" How do i modifythe precharge pressure? Is this not hte factory set "Factory pre charge 1.4 bar" that is written on my tank? When you talk about minimum required pressure what do you mean by this? As in minimum that i need to have a nice shower or is it something more technical in terms of what my pump or tank need to run correctly? If so how do i find this please? pressure of 3.0bar then the available water vol per 100L of accumulator capacity is 34.5L, if the precharge pressure, for whatever reason is set to only 0.5bar then the available water vol in falling from 3.0bar to 1.5bar is only 22.5L, important to bear this in mind. You have the pump SP at 2.2bar , assuming the precharge pressure is 1.3bar then the available water vol in falling from 2.2bar to 1.5bar is 28L (per 100L of accmulator vol), I would definitely suggest checking that precharge pressure and set it slightly below your required minimum pressure and reducing the diff to 0.8 bar, as you suggested" Im a bit lost above i dont really follow what you are saying but appreciate this is important so is it possible you could explain a bit more please. "Can you also post the pump inlet and outlet pressures with a big demand. Also the the indexed setting in the window of that ABV?, automatic bypass valve, located between the two pressure gauges." I think you want me to run a lot of water as in a lot of taps to be open at the same time? If so i will do this. But before i do what measures do you want me to show. Is it these 3 things? ive attached 3 pics in the follow up to this post. I am not sure if they are accurate as one seems to be stuck on 1.4 whenever i look at it. If it is not these can you let me know. Once i know ill run the taps to capacity and post. Thank you all for such detailed help. I really appreciate it.

I've attached the pics above. The manual dial is the pressure of the water coming in. I think its showing 1.4 at the moment but it can fluctuate. I have shown a pic of a tank called an aquasystem I have no idea if this is linked to the situation but have added it anyhow. I play about with the numbers and as thing stand i have not had an error for a while using the following ( i forget what they were on before i wish i had noted them down) SP 2.2 Dif 1.5 LPR 0.5 PR2.8 PRT 180 Npn 2 going on what you have suggested above i feel maybe i reduce the Dif to 0.8 or something? I believe you are correct in that it works on the cold water. You say 174 litres. I am not sure if this is correct. How do i check this? You say set the set point high i am concerned this may lead to it trying to achieve this and over heating? You ask me regarding the pressure and if its static or flow reading. The readings vary but at the moment static ( as in no water flowing) is 1.4 when ive just ran the tap the 1.4 stays the same. I am not sure if this is what you are asking me though. Regarding the 1.1 (it was on the day i posted initially but today it is 1.4) that is the reading i have in the attic. I am not sure how to test it downstairs? "Check what suction head the pump is designed to achieve" how do i check this please? Regarding the DAB i am concerned that 500 litres of water will weigh a lot would a loft be able to support that size of tank weight? google implies it would weight around 500kg! seems a lot. We have nowhere really other than the loft to store this product due to the layout of our house. Any help with the above would be gratefully received.

Thank you for such an amazingly detailed response. I am going to send a photo of what i have and will come back regarding the points you have made. Thanks

Hi i am not sure if anyone can please help. I have low pressure coming into the house around 1.1 bar. We have 3 story terrace. The boiler and the Stuart turner accumulator and mainsboost are in the loft. When it works it is great. We get really powerful showers. Only one person can shower at the same time though. It will also lose pressure after about 10 mins of a shower. This is ok in parts. However it has so many alarms go off and i have to go up and restart the MJ2 accumulator. It is frustrating. A few questions. There are numerous settings. I have tired to fiddle about with them but its a bit trial and error. The settings are as follows and also next to them the factory preset "set point" 3 bar "Diff pressure" 0.5 bar "Low pressure" 0.2 bar "High pressure" 4.5 bar "Pump run timer" 180 mins "Pump number" NPM2 (do not tamper) "CRE Setting" 0 Do you know what i should have these above on ideally? I am not sure what "Low pressure" means does it means it kicks in if it goes below that? Does it mean it alarms if it goes below that? I get LPR low pressure cut out PRT (pump run time) and HNT High temp cut out alarms. I am a bit fed up of it. Does any one have any tips. My tank is pretty big its a vertical tank about 6ft tall. Any tips on settings to make it work better would be gratefully recieved. Also I have done some googling and have seen this DAB ESYBOX and ESYTANK Cold Water Booster Set and Tank | Complete Pump Supplies Do you think this is any better and will fix my problems? The person on the phone implied it will give me 3 times as much pressure and as such i will be able to have multi showers on the go at the same time. I am not sure if i am being sold a bit of an expensive dream. Many thanks in advance

Thanks SteveoElliot Sounds a long process to find your leak. Hopefully ill get there with mine. Many thanks all of you

Hi thanks SteamyTea the guys are around again now. Ive asked them to look at the area you suggested

Hi MarkC when you say render do you mean the bit I’ve circled? ive never liked that part but every respective person that has gone up there dismisses that area as an issue. But I don’t like the look of it.