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Bill Kibbel

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Posts posted by Bill Kibbel

  1. Circulator Layout

    in HVAC Forum

    Posted

    I think it works because the pumps push the water in the right direction so it does not have a reason to short circuit. Does this explanation make any sense?

    Kinda. It only works when there are two closely spaced tees, no more than 4 pipe diameters apart.

  7. TPRV for Williamson oil boiler?

    in HVAC Forum

    Posted

    The air vent is at the correct tapping. This same tapping can be used for the water fill and pipe to non-diaphragm type expansion tank.

    The PRV tapping is at the rear of the boiler (the side facing the drywall) near the top. There should be a hole in the jacket at that location. When I get home, I'll look for the diagram of the near boiler piping for this boiler.

  11. Glimpse Into US Drone Rules?

    in Tools & Equipment

    Posted

    I climb most roofs so this will be used mostly for large commercial work - like taking an aerial photo to label HVAC and other roof mounted equipment locations. It'll also be handy for cathedral towers that don't have access from the interior.

    I'm probably still going to get the certificate. I get the occasional jobs that require federal security checks. If I whip out a spy copter I should have the clearance and credential.

    I was just wondering about the exam. The referenced documents for test prep seem over the top for hovering a chunk of plastic.

  17. Connecting furnace/water heater single B vent flue

    in HVAC Forum

    Posted

    You can combine 2 vent connectors into a common vent connector, provided it is sized and installed correctly.

    What's shown in the picture, with the WH vent connector shoved into a hole cut in the side of a wye, is just really wrong. The slope of the 2 vent connectors doesn't look right from this angle. I'd like to see the rest of the vent system to see what else was done.

    • Thanks 1

  20. Septic System Distances

    in Plumbing Forum

    Posted

    I don't know the specific requirements for your area. Your county should have an ordinance regulating on-site systems that is readily available.

    I would think that since a conveyance line is not defined as a component of a dispersal system area, there would be no restriction.

  22. Is this "Fair"?

    in Inspector Rants!

    Posted

    Had 2 medical specialist doctors misdiagnose a life-threatening ailment of a family member. Finally found one that correctly treated the cause. Should I post on the internet that the medical profession "is an industry that needs more regulations, more lawsuits, more punishments, and more "licenses" removed from it's practitioners"? Look at the cost of health care and the amount of really good experts that have quit their practice over the major increases in their insurance cost. Following your solution would likely result in the cost of each inspection to increase exponentially.

    Yes, based on the information you posted, the first inspector missed some important information that should have been reported.

    Yes, you posted here (twice) to slam our profession and blow off steam. If you really only wanted help from us, what you posted would have been quite different.

  23. Is this "Fair"?

    in Inspector Rants!

    Posted

    Did you select ACME based on a discount price? You will typically find that those with extensive experience will cost 2-3 times more in this profession. At yesterdays inspection, I was informed our price for the buyer's inspection was $700 more than what the seller's paid for their pre-listing inspection. Today's buyer informed me our fee was $450 higher than the fees quoted by the other 2 firms he contacted.

    Sorry you had to have this experience. You feel better now that you come here and bash all of us based on one experience with a really lousy inspector? Please link the posts here that show regular contributors here are anything like what you allege.

  24. B vent inside home

    in HVAC Forum

    Posted

    Which is frustrating when 3 of the four major manufacturers require it, but the 4th doesn't. It means that I have to figure out the brand before I write up the issue. Woof!

    Or, you can state most of the major manufacturers require it and what Rob says above.

  25. B vent inside home

    in HVAC Forum

    Posted

    I can't find anything in the IRC or the manufacturers' instructions to prohibit it. (I checked Metal Fab, Amerivent, and Duravent.)

    I researched this years ago for expert witness work. Here's 3 from instruction PDFs on my laptop. I'm sure I have more at the office desktop.

    Selkirk: "Gas vents which extend through any story above that on which the connected appliance is located are to be provided with enclosures having a fire resistance rating equal to or greater than that of the floor or roof assemblies through which they pass."

    Hart & Cooley: "Portions of gas vents that may pass through accessible spaces must be enclosed to prevent personal contact with and possible damage to the vent. The enclosure also may have to meet fire resistance rating provisions."

    Duravent: "Any portion of the vent which passes through an occupied area must be enclosed, to prevent accidental damage to the system, as well as burns."

    Commentary: "Physical protection of the vent system is required to prevent damage to the vent and to prevent combustibles from coming into contact with or being placed too close to the vents. Such protection is typically provided by enclosing the vent in chases, shafts or cavities in the building construction. Physical protection is not required in the room or space where the vent originates."

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