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 Phil Your Own Question
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

I have a gb 142-45 buderus gas fired high effiency

Customer Question

hello i have a gb 142-45 buderus gas fired high effiency boiler. I had to replace storage tank due to warranty issues.evrything works fine however getting 165 degree water at taps. set bc-10 controller to 120 yet temp is not coming down. have checked resistances on supply/returnhot water temp sensors as follows supply 4.3 ohms,return 4.6 ohms and hwtem 5.25. what is causing this?
Submitted: 1 year ago.
Category: HVAC
Expert:  Rick replied 1 year ago.
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.This is an issue with the tank sensor/aquastat no the supply and/or return sensors. What you you have for a tank temp control? where is it connected?