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I paid $30 for an answer and found I was charged for the wrong answer! How can I make sure the answer I get is correct? I asked 1 question and 3 statements were made all incorrect! See below, Hi; I have a hot water heating system When I tested the standing pilot safety shutoff it took 78 seconds to shutoff. This seems a little long. Is it within the specs? Expert: Billy 1961 replied, Hello, 78 seconds is indeed too long. Most direct vent units are 30-60 seconds with 30 seconds desired. What is the boiler make model? Billy 1961 Just Answer mentor Wrong, I found All direct vent appliances are 30 seconds max! And my boiler is a B vented unit! what boiler is direct vent? none! ANSI and CGA safety test standards for gas B vent appliances permit the thermocouple dropout time to be as long as three minutes. The permissible dropout time for direct vent appliances is 30 seconds. The 30-second dropout is in the ANSI Z21.50 CGA 2.22 standard The 30 second provision apply only to direct vent appliances, like fireplaces etc. The allowed dropout time for non-direct vent appliances ,B vent appliances in both standards remains at three minutes. Compliance with the 30-second dropout requirement requires millivolt controls that use both a thermocouple and a thermopile. The lower mass of the thermocouple controlling the pilot safety electromagnet allows faster cooling after loss of the pilot flame than a thermopile, thereby reaching dropout sooner.

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  • 2 more comments 
  • KD Grayson Heating,Air conditioning & Refrigeration

    1 he did not know it was 30 not 60 ever!

  • KD Grayson Heating,Air conditioning & Refrigeration

    1 He said 30 to 60, it is never 60.

  • KD Grayson Heating,Air conditioning & Refrigeration

    He called a boiler a direct vent appliance, and he knew nothing about how the 30 second requirement is made possible by using both a thermocouple and pilot generator, the less mass of the thermocouple being able to cool faster

  • KD Grayson Heating,Air conditioning & Refrigeration

    I know this
    question has been posed here a couple of times,

    Answered by:Billy

    HVAC Technician

    I know this has
    been posed here a couple of times,but I'm still
    unclear. I am replacing my Honeywell S86H with a Honeywell S8610U3009 for my Burnham
    Gas Boiler. On the new module (S8610U) there is a terminal connection marked
    TH-W which is not present on my old module (S86H). I was told to take the 24V
    cable and split it so that it goes into both the 24V terminal, and the TH-W
    terminal on the new module.

    Is this the
    correct? does it make a difference which cable (red or white) goes in to the
    24V(GND) terminal and 24V terminal?

    Any help on this
    matter will be greatly appreciated!



    Billy replied.

    The red and white
    you that the "y" splice to feed 24v and TH-W?Accepted


    Billy replied 2
    days and 1 hours ago.

    Customer replied.

    Well the red and
    white are two wires that go to the 25V(1) and 25V(2) terminals on myS86H.

    I assume that
    they need to go to the 24V(grnd) and 24V terminals with one of them
    "y" spliced to go to the TH-W terminal as well. I am just not sure
    which one to splice.

    Accepted Answer


    Billy replied.

    White is common
    and the one to splice.


    If the S86H
    "old module" had a

    vent damper
    connector but

    a vent damper was

    installed, or if
    it did not

    have a vent


    the 25V(2)or 24V

    from the old
    module to the

    TH-W terminal on



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  • 83 Answers

What are you asking ? Billy gave you a correct answer he says 30 seconds is desirable
Plus I only see one answer not three
Second I would not sign up anywhere that I have to pay for any info

Posted on Oct 20, 2013

Testimonial: "Billy 1961 replied, Hello, 78 seconds is indeed too long. Most direct vent units are 30-60 seconds with 30 seconds desired. What is the boiler make model? Billy 1961 Calling a boiler a direct vent appliance and not knowing the 30 second requirement or how it is achieved! and charging $30 for that?"

  • KD Grayson Heating,Air conditioning & Refrigeration

    I think it preferable when payying $30 for expertise, to get 1 correct answer to one question, not 3 assertions all factually in error.



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SOURCE: Furnace runs about 1 minute, then total shutdown

that sensor as you call it is a thermacouple it produces a small current which lets the gas valve know it is ok to open . if the pilot is not clean and correct it will not let main valve open. if your pilot is good then you have bad gas valve. you may have low gas pressure this can also do what you are describing

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SOURCE: pilot flame moves off thermocouple when main flame

You must get the dust out of the ODS chamber that builds up during warmer months. If you go monkeying with the flap it will quit altogether. I use a simple squirt of rustbuster into the pilot, let it dry and all is well once more. You can get rustbuster at ace hardware for $2

Posted on Nov 10, 2009

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