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Buderus G115/28 with Honeywell Aquastat - Pres/Temp Gauge Hidden

Dan_15 Member Posts: 388
My installer setup my new G215/4 the same way. The honeywell aquastat is directly in front of the T&P guage making it a bit difficult to read. (Notice in the pic that the installer also did not pipe the relief valves to the ground; I had to call them back for that). I guess my installer missed class that day.


  • Jim Bosman
    Jim Bosman Member Posts: 1
    Buderus G115/28 with Honeywell Aquastat - Pres/Temp Gauge Hidden


    I am a homeowner in Massachusetts. Our new oil-fired Buderus boiler was installed yesterday, and the "temp/pressure gauge" is on the "supply manifold" at the rear of the boiler(from what I read in the manual, these items were part of a kit that came with the boiler). My question is, the supply manifold is veritcal and the gauge is facing front, and the aquastat is mounted on the top rear of the boiler, leaving just 1.25 inches of clearance between the glass of the gauge and the aquastat. With the aquastat being right in front of the gauge like this, it is impossible to read the gauge unless I remove the cover of the aquastat, and even then it is difficult to read the lower half (pressure) register. Was this gauge installed properly?


  • Joe@buderus_2
    Joe@buderus_2 Member Posts: 302

    It is recommended to install the gauge facing the left or right side of the boiler. The gauge facing towards the front does not have any impact on the preformance of the boiler, but as you mentioned, a little hard to read.
  • ScottMP
    ScottMP Member Posts: 5,884
    A smart contractor

    will add a short nipple and coupling to raise it up a little, past the relay.

    Right Chris ?


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  • Big Ed
    Big Ed Member Posts: 1,117

    I brought this up to G Blue myself. I feel it should be tapped in higher.Too close ....Belongs in front,....
  • J.C.A._3
    J.C.A._3 Member Posts: 2,981
    You mean like this?

    It is only slightly easier to see with a Logomatic control also. I like to be able to see the gauge while doing any testing (which seems to usually be at the front of the boiler doesn't it) Lets me know when things are getting too hot or when I'm about to go off on high limit. It also makes for a spiffy place for a LWCO! Chris
  • Big Ed
    Big Ed Member Posts: 1,117
    Another gripe but with the 2701

    The manual over ride switch. I would find it more usefull to have manual mode over ride the out door reset and some of the programs only, and not let the hot water run wild.... Am I missing something ? What is the purpose?

    Being the one who would be called Christmas Eve to fix it in the middle of a blizzard......I would like to have the option not to scold the home owner.....

    p.s. Buderus tech help line has been a blessing but we can't keep Joe on call 24/7 thanks again..
  • Joe@buderus_2
    Joe@buderus_2 Member Posts: 302

    The "Manual" switch by passes the logic of the R2107. I understand about the DHW getting to hot. As far as I'm aware there is no change planned for the R2107 when in the manual mode.

    With concern for bacteria growth and scalding, tempering valves may become code with the DHW tanks set at 140 degrees in the near future.
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