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Type: Posts; User: hvacnut

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  1. Replies
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    The condensing temperature determines the head...

    The condensing temperature determines the head pressure. The hotter the cooling medium the higher the condensing temperature and therefore head pressure and vice versa. The compressor's job is to...
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    4,012

    Be sure to check the air intake and vent pipes...

    Be sure to check the air intake and vent pipes for partial blockage. Also, the reason not to use sand paper is that small particles of sand will get embedded in the sensor and then the flame will...
  3. Thread: "Leak Sealant"

    by hvacnut
    Replies
    52
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    8,406

    This is the first year I've used leak sealant. I...

    This is the first year I've used leak sealant. I was very skeptical about using it since I remember quite a few years ago that a similar product would plug systems up. That product would plug up the...
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    Thanks again for all the suggestions and advice....

    Thanks again for all the suggestions and advice.

    markj, I think you're right and for what it would cost the customer to have the burners replaced it's not worth it for him. I did suggest he pitch...
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    Guys, thanks for all the great advice and...

    Guys, thanks for all the great advice and suggestions! To answer some questions:

    - Yes, I have checked and adjusted the manifold pressure to 11 iwc and I tried adjusting the air shutters first all...
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    I worked on a 1984 Lennox LP furnace in which all...

    I worked on a 1984 Lennox LP furnace in which all of the heat exchanger sections were plugged with soot which was causing flame rollout and burned a limit control wire in half. I cleaned all of the...
  7. Johnson G60QHL-1 control on old Lennox furnace

    MikeJ,
    Yes, I am still using the original funky shaped Johnson valve. I checked the gas pressure and it was a little low (3.3 IWC) and increased it to 3.5 IWC. I also checked the pilot line...
  8. Johnson G60QHL-1 control on old Lennox furnace

    rimek,
    Yes I cleaned the pilot hood with a wire brush. I also cleaned the burner, the pilot line and the brass line fittings. I also clipped a wire onto the base of the pilot burner and clipped...
  9. I've got this Johnson G60QHL-1 control on an old...

    I've got this Johnson G60QHL-1 control on an old Lennox intermittent pilot natural gas furnace. It will light the pilot then start sparking again for about 3 seconds, wait a second, then starts...
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    696

    I currently have liability insurance with a Farm...

    I currently have liability insurance with a Farm Bureau brokerage named Colony Group. I pay about $1100 for two million of liability. I am in my second year of business. So far, I am claim free. I...
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    I am looking for load calculation software. Can...

    I am looking for load calculation software. Can anyone recommend a good package as well as some to stay away from?

    Thanks in advance!
  12. Replies
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    I have encountered several people now that have...

    I have encountered several people now that have bought their furnace and/or air conditioner from a web site and want me to install it. In every case the brand has been Goodman, which is one of the...
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