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  1. Replies
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    In CA, new system has to pass air flow, tested by...

    In CA, new system has to pass air flow, tested by independent HERS rater. 350 CFM per ton minimum. You can do it with flex, if you have the room for it. Check your ductulator how big a flex you need...
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    We are spending more mastic than ever before,...

    We are spending more mastic than ever before, that's for sure. The loose fit of the sleeve wouldn't bother me a bit though. The extra air space between your pipe and the insulation will only increase...
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    That explains it. Bad thinks happen when painters...

    That explains it. Bad thinks happen when painters show up.
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    The Titule 24 is now beiing enforced here in CA....

    The Titule 24 is now beiing enforced here in CA. Your air flow gets tested on every install, and 350 CFM / Ton is the required minimum. A lots of guys had to re-think the way they are using the flex....
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    There is a JPL company here in CA, I think they...

    There is a JPL company here in CA, I think they are in Sacramento, or somewhere up north. They make the insulation sleeve. It's basically the flex duct, minus the inner core. I see it on their web...
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    You may say why not just use the flex and be done...

    You may say why not just use the flex and be done with it right? But they want sheet metal, I have to give them sheet metal.
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    Duct insulation question

    I have a job coming up that calls for some new duct. Round sheet metal (KD) pipe. I was thinking instead of wrapping it with insulation, what if I use a flex duct as an insulation? One size bigger...
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    Thats right! I only do Daikin, and the wall unit...

    Thats right! I only do Daikin, and the wall unit snaps in place and gets secured with extra screws. If they bump in to it, the plastic cover would brake, before the unit moves! That being said, the...
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    I found a few videos on the YouTube about system...

    I found a few videos on the YouTube about system clean up after burnout. What I got out of it, is that: flushing the evaporator coil with the expansion device left in, is pretty much pointless....
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    I'm sorry Techman, what is SGMI? ( I only had one...

    I'm sorry Techman, what is SGMI? ( I only had one coffee this morning, so bare with me please.)
    The line set is about 50 Ft, not underground, but I'm planing on putting an inverted P trap on the SL,...
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    This is a 5 Ton, big condenser, so I would like...

    This is a 5 Ton, big condenser, so I would like to save it if at all possible. Plus, the supply house already agreed to replace the compressor under warranty. Thank you guys for your help! I have...
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    System Flush question

    Hi guys! I'm looking at 5 Ton R22 Goodman split. It had a compressor burnout at 4 years of age. After the burnout, no system cleaning has been done. New compressor has been installed with new large...
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    If I end up building the AH, it will have no heat...

    If I end up building the AH, it will have no heat strips. Here in LA, heat pumps don't go in to defrost. It just does no get that cold here.
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    The closet has a raised floor, and the return is...

    The closet has a raised floor, and the return is under the floor. Combustion air comes in through the wall vents.
    I did talked to the home owner about possibly dropping the floor of the closet. But...
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    Thanks Bill, that's not a bad idea. Slab coil may...

    Thanks Bill, that's not a bad idea. Slab coil may actually fit inside the plenum. If I can find one the right size.
    I sense you and the other guys are not fond of the idea of using the furnace to...
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    There is the supply plenum, but most of it is...

    There is the supply plenum, but most of it is bearied inside the ceiling, only about 4" is sticking out. I would have to do some exploratory surgery, just to find out how big the plenum really is....
  17. You have a Silicone Nitrite Ignitor, controlled...

    You have a Silicone Nitrite Ignitor, controlled by a adaptive learning routine. You can ohm out the igniter, 10.9-19.7 Ohm would be a heathy reading for a cold Ignitor. Do make sure the voltage is...
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    I have to retract on that, if the ICC detects LPC...

    I have to retract on that, if the ICC detects LPC fault when it gets the Y signal, it will not start the compressor. I think you already figured it out, it got to be the board. Let us know when you...
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    It will be a heat pump. I would use a "A" coil...

    It will be a heat pump. I would use a "A" coil with heat pump TXV and match it with a heat pump condensing unit. Should work right?
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    The ICC ignors the LPC for 90 sec. at start up,...

    The ICC ignors the LPC for 90 sec. at start up, so that's probably one thing you don't need to worry about.
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    Custom Air Handler

    I have a project, to add a cooling to an existing gas furnace heating sys. The furnace is located in a closet, with floor to ceiling clearance of 48". My original plan was, to get rid of the furnace...
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    Of all the noises the furnace makes, the spark is...

    Of all the noises the furnace makes, the spark is the least audible. I thing the governing issue here is the production cost. If they can gat a good deal on a train load of spark modules, they will...
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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?...
  24. Thread: Furnace Vent

    by Airczech
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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.
  25. Thread: Furnace Vent

    by Airczech
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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...
  26. 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...
  29. 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...
  33. Thread: Qwick Books

    by Airczech
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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?
  37. Thread: Flue Gas Vent

    by Airczech
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    623

    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...
  38. Thread: Flue Gas Vent

    by Airczech
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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.
  39. Thread: Flue Gas Vent

    by Airczech
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    623

    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!
  45. Thread: Strait A!

    by Airczech
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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...
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    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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    Well, you certainly came to the right place. I'm...

    Well, you certainly came to the right place. I'm an A/C student my self, and this forum is absolutely amazing! The amount of information that's hiding under each and every folder is insane! I always...
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    Hey guys, maybe now is the time to go out and...

    Hey guys, maybe now is the time to go out and sell some EAC systems! Guaranteed to kill every virus and bacteria in the house. And since the flue is a Mexican bug, I prescribe a shot of Tequila!
  50. Thread: Turn signals

    by Airczech
    Replies
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    1,961

    Back in the good old days, we used to go camping...

    Back in the good old days, we used to go camping a lot and I decided to install a CB radio in my truck. Thinking how great it will be to talk to all the nice folks on the road while driving. Little...
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