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    Very old Wall Furnace

    This is 40 year old wall furnace that has been condemned. My question is, if you guys look to the left of the gas valve, you can see a copper coil. Anybody have any idea what this may have been for?...
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    These are the "B" type double wall vents for wall...

    These are the "B" type double wall vents for wall furnaces. Some are clean, and others have a lot of soot on them. Most likely a combustion problem, but I sure would like to hear your opinion on it.
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    Furnace Vent

    I have been doing some basic maintenance work for property management companies. Went up on the roof to check the furnace vents. When you guys see a vent pipe that is all black of soot deposits, what...
  4. Well, what would be the worst case scenario? The...

    Well, what would be the worst case scenario? The controll board detects pressure switch problem and locks out the unit? Or the switch holding closed while the inducer isn' pulling sufficient draft?...
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    Yes, old furnace, no control board. And yes this...

    Yes, old furnace, no control board. And yes this is the diagram I'm looking at. The untimed load would be the gas valve and ignition? And continues and cooling fan would still be routed through the...
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    Wiring question

    I have a ICM 251 fan control. Delay on brake, delay on make. While controlling the fan in heating mode is fairly simple, my question is how to wire this to maintain continues fan and cooling mode fan...
  7. Pressure switch

    Just picked up few pressure switches at Johnstone yesterday. Cheep black plastic, made in Costa Rica.
    Fixing a York, 80% single stage furnace. The old pressure switch would close initially, but...
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    Truck lettering

    Back in 2005 I rear ended a car on the freeway while driving my beautifully lettered work truck. It was a set up. The car in front of me had the brake lights disabled. Another two cars driving on...
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    Furnace control board

    Do you guys have a good universal control board that you carry in a van, that works for some or most of the early models 80% furnaces?
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    rx11 Flush

    Have been using rx11 to flush my line sets. A lots of it, until it comes out clear and than some more. Insane amount of nitrogen to get it all out. Than puling deep vacuum, brake with N and puling...
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    Qbooks

    I have been using 2006 version Quickbooks Pro on my MacBook. Works fine for organizing your finances and keeping clean books. Stable, no major issues. Will upgrade soon to the newest version.
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    Flue damper

    Flue Damper shown in relation to the inducer. Makes a little sense. The importance of having a clean and non-obstructed HX being stressed at every level, this damper effectively reduces the flue gas...
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    Flue damper

    I have had the same problem on a Bryant 2 Ton Gas Pack, roof top unit. With new inducer, new rollout switch, gas pressure adjusted, the unit continued to cycle off on the rollout switch. The flame...
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    Has anyone actually know of someone who got...

    Has anyone actually know of someone who got caught venting and had to pay the fine?
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    Still learning....

    Thanks Flange, this is a good info! Heaterman, it's the
    Bryant 582ANW024040NAAD - fairly new unit, installed couple years ago by someone else. I went ahead and inspected the other units on the...
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    I should add, this is Bryant, 2 Ton cooling,...

    I should add, this is Bryant, 2 Ton cooling, 40000 BTU gas heating unit. I have seen the same restrictions on Carriers also.
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    Flue Gas Vent

    I work on RTU gas-electric packages. One kept going off on the FRS. The flame did not look right. New inducer, manifold pressure adjusted, still the same problem. I noticed a plate in the flue gas...
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    Sticky: So far I'm the only one in the Los Angeles area.

    So far I'm the only one in the Los Angeles area.
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    Home beer brewing - cooling project

    I would like to set up a cooling unit to draw the brew temp from 200+ deg. down to about 60 deg. I have a few water fountain units that I was going to use for parts. The heat exchange copper coils...
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    Another school project

    Hi guys! A question came up today in the class about a system pump down. Closing the high side service valve while running the system and trapping the ref in the condenser, before opening the system....
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    I'm a student my self, taking HVAC classes at...

    I'm a student my self, taking HVAC classes at community collage. The book we are using right now is Fundamentals of HVAC/R by Carter Stanfield and David Skaves. Very good book, over fifteen hundred...
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    I would like to get one of those heavy duty steel...

    I would like to get one of those heavy duty steel boxes and bolt it to the floor and keep all my tools in it. Than, they will probably steel the whole van!
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    Strait A!

    Hey guys,
    I just thought I would stop by and let you know I just finished the summer semester over at the El Camino Collage! This was my very first HVACR class on my way to become a Tech, and I...
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    Hi Guys, I have been considering Penn Foster for...

    Hi Guys,
    I have been considering Penn Foster for a while, but I have already read a lot of books and manuals on my own, so I went to our local community collage for some hands-on. The class is...
  25. Has anyone been to El Camino collage?

    Hi guys, hope everybody is well.
    Question for all the guys here in California, Los Angeles.
    Has anybody been to either El Camino Collage or Harbor Occupational Center in San Pedro for your HVAC...
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