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Mine at present having issues: The vent pumping over when the motor is set in either 2 or 3. Does it matter where they are attached? Should they be attached below the Tee? if that is so can they both be attached on the Flow pipe from the boiler? Regards

My situation is not resolved yet though. Can one attacth a vent to the expension cistern & the feed from the expansion cistern to a vertically climbing 28mm HF from the boiler [before the Grundfos Domestic Circulator-Pump]? in that order? Will that stop over flowing with pump speed at 2 & 3...

Hi doitall, I am sorry to barge in this thread. Is it ok and if not please ask moderator to erase my post[I am sorry if it is wrong] Can the open vent, cold feed in that order be attached into vertically raising flow pipe [it is from the boiler end of the flow pipe]? If so should there be...

Matt, Yes the Vent to & the Feed from the expansion/feeder cisterna are marked correctly. If I could get him do it better because I have already paid a lot of money. Does he need to realign the Feed and the vent? The second post suggests to put 150mm apart but the Grundfos literature...

Thank you for your guidence and time matt1e. "to take out the bypass (its the wrong type anyway) cap off at the bottom tee, rotate the top tee 180 and connect the bathroom rad flow into it" I understand that bit to tell him. "when the boiler is in demand) fitted with lockshields and...

My old house with plumbing difficult to decipher. My plumber took on a difficult job. However I need your help to find where should be the Feed & Vent connected from Expansion cistern in my fully vented system boiler. Replaced with new boiler,DHW tank,Expansion Cistern,and Cold water Tank...

Photo taken from same level as the Grundfos

Would mind checking the photo as now I have taken one with same level as the pump. And in your view do you feel from the phot the "shaft" is correctly placed? Regards

Grundfos

Hi, Q1:The pump is installed in Horizontal plane I thought? Can you help me understand? What is Shaft? Q2 Is that plastic white one is the gate vale? Is that the one should be replaced with automatic bypass valve [Fig: 13 & 14]? Would you mind answering? Regards

Q1: I hope my installer will help us out. Q2: No Q3: No,It comes on at 5.30 a.m and hence causing an issue,I suppose. The noise is very obvious though. Does it matter that the Motor could not run on 3? Regards Thank you

A new boiler system [Boiler,Valves, DHW Tank, Grundfos Motor, Cold Water Feed tank, Feeder & expansion Cistern, Room Thermostat all replaced with new] installed and commissioned 3 days ago. Regular Open Vented boiler with one valve previously is now replaced with open vented boiler with S...

Hidcawkwell, Have any in your mind,I wonder? Why not share here of "different" that you have in mind? :( Regards

Hi kidgreen, He does not want to do that though I suggested that to him :oops: Regards

My present Regular Boiler (Open vented & Gravity fed], including the DHW tank,Cold Water Feeder Tank and the Expansion Cistern to be replaced.... The installer wanted to make it a better system so that I will be able to select CH alone, DHW heating alone or CH & DHW heating together but...

Thank you very much Tibbot and it is greatly appreciated. Regards :P :P

I do take your point. However 1. I am new to the forum [May be that cannot be an excuse] 2. You have raised a poignant point "Importance of installer quality over brand"- Individual like us hopefully come in contact with an installer [if he/she a very capable installer] once in a life time...

Hi Tibbot, Have I said anything that is upseting? I am sorry if I have but you seem to miss my question. If I am to only go by the Gas Safe Installer, What would be the point in having a forum like this and discussing? We idividuals have different expectations, some wants to know & some do...

My Safe Gas installer is not Viessmann registered.... So I would like to find out one similar in stature Reliability,Functionality and robustness.. What would be the most equivalant combi Vaillant that would be in the same bracket as ATAG Q38C & Viessmann Vitoden 200W with Vitotronic 200...