How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Andrew Smith Your Own Question

Andrew Smith
Andrew Smith, HVAC Technician
Category: HVAC
Satisfied Customers: 3586
Experience:  Heating and Controls engineer
46681511
Type Your HVAC Question Here...
Andrew Smith is online now

We have just had a Vokera Eccel 25 combi boiler fitted by a

Customer Question

We have just had a Vokera Eccel 25 combi boiler fitted by a registered plumber, the old system was a conventional boiler on a C plan. Prior to new boiler being fitted I replaced several radiators downstairs and one upstairs all of which got hot off the old boiler even though one of the new TRV's seems to be on the return rather than the flow. After the boiler was replaced one radiator in particular downstairs barely got warm, the plumber who fitted the new boiler suggested that I turn all radiators off to see if it would force heating around, I did this however it has now made it worse as both feed and return pipes are cold so needless to say so is the radiator. It has now been suggested by the boiler installer that we remove the TRV on this radiator as there is a larger radiator in the same room and is within 6 metres of this so will prevent the TRV working - does all this make sense and is there something apparent that seems wrong with possibly an easy(ish) fix?
Submitted: 2 years ago.
Category: HVAC
Expert:  Andrew Smith replied 2 years ago.
***** ***** : Firstly, does the radiator work if you take the TRV off?
JACUSTOMER-jmkpcqe7- :

No it still doesn't work.

JACUSTOMER-jmkpcqe7- :

I think that this is the worse £20.00 I have spent and feel ripped off!!

***** ***** : It looks like the pump is not powerful enough?
***** ***** : Can you turn all of the radiators off and then leave the head still off the radiator and let me know if it heats?
JACUSTOMER-jmkpcqe7- :

Tried that and it made it worse, what little bit of heat we had disappeared and the radiator remains cold, not even any heat in the flow pipe which comes from the room above.

***** ***** : I wonder if the pipework is wrong?
***** ***** : Has it ever worked properly?
***** ***** : Hi?
JACUSTOMER-jmkpcqe7- :

Yes all radiators worked fine until new boiler was fitted, could it be that the system has an air lock?

***** ***** : To see is it has then turn off one valve fully and bleed into a tub
***** ***** : Then do the other
***** ***** : You should be able to pull the hot water to the leg of the radiator on each valve.
***** ***** : Then turn both valves back on
***** ***** : If one leg gets hot and the other goes cold then you have circulation through the radiator
***** ***** : If they both stay hot and go grdually
***** ***** : gradually colder then you have no circulation through the radiator

What Customers are Saying:

 
 
 
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy
< Previous | Next >
  • You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future. Jimmy
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • theplumber717

    theplumber717

    HVAC Technician

    Satisfied Customers:

    153
    Lic plumbing and heating contractor, 28 years exp
< Last | Next >
  • http://ww2.justanswer.com/uploads/TH/theplumber717/2011-11-24_34039_DSCF7012.64x64.JPG theplumber717's Avatar

    theplumber717

    HVAC Technician

    Satisfied Customers:

    153
    Lic plumbing and heating contractor, 28 years exp
  • http://ww2.justanswer.com/uploads/BI/billyjr1961/2013-9-27_11122_ATT1351123267229photo.64x64.JPG Billy's Avatar

    Billy

    HVAC Technician

    Satisfied Customers:

    9124
    Journeyman Heating/Cooling Technician.
  • http://ww2.justanswer.com/uploads/AI/airheatman/2013-7-7_172444_RuudUnits.64x64.jpg Airheatman's Avatar

    Airheatman

    HVAC Technician

    Satisfied Customers:

    1834
    Furnace, A/C and heat pump specialist.
  • /img/opt/shirt.png Brian's Avatar

    Brian

    HVAC Technician

    Satisfied Customers:

    53
    OFTEC registered oil heating engineer and plumber.
  • http://ww2.justanswer.com/uploads/PL/Plumberpro/2014-6-23_6520_image.64x64.jpg Plumberpro's Avatar

    Plumberpro

    Plumber

    Satisfied Customers:

    40
    Fully qualified plumbing , heating and gas engineer 20 years experience
  • http://ww2.justanswer.com/uploads/MA/MarkAYng/2011-1-15_16358_Markcameo2008b.64x64.jpg MarkAYng's Avatar

    MarkAYng

    Handyman

    Satisfied Customers:

    0
    Knowledgeable in home, electrical and small appliance repair.
 
 
 

Related HVAC Questions