Joined on November 25, 2010
Last Post on February 27, 2014
@ February 27, 2014 6:39 AM in multiple furnaces going off on flu limetHow about your temp rise? Is it right according to the nameplate?
@ February 26, 2014 7:38 PM in Proper AFG head?So you fire the thing up, I guess you would check for smoke, do a combustion analysis. What numbers would send up the red flag to you that you may have the wrong nozzle?
@ February 26, 2014 7:06 AM in Proper AFG head?So your saying if you install a new furnace, the nozzle that comes with that new burner may not work? that doesn't make sense.
@ February 24, 2014 5:01 PM in Proper AFG head?From what I read it seems that the nozzle size is determined by the manufacturer, so why would anybody try to change the nozzle that the manufacturer recommends?
@ February 21, 2014 9:02 AM in Oil furnace won't light!!This is one of the other things that scares me about getting into oil. I assume its pretty rare that you get one that is that soaked like Rrey said? Icesailor if i understand you right, You turn it on and then off quickly so that if there is a build up of oil it will light and be contained in the chamber and burn off? Or I like Rreys way also by manually lighting it and letting it burn.
@ February 21, 2014 8:52 AM in water in tankLike I said im a gas guy looking to get into oil. To me it seems like oil is easier to troubleshoot than gas? What's your opinion? The only thing that scares me is if something like that would happen, what would I do? I'm pretty much a one man show, so if I get stuck on something I don't have anyone to go to, its all on me.
@ February 21, 2014 8:45 AM in changing a garber filterCould you explain a little more in detail how the soot vac works?
@ February 20, 2014 7:46 PM in Oil furnace won't light!!Icesailor, what is the procedure when you know a homeowner has pushed the reset 20 times and the chamber is filled with oil?
@ February 20, 2014 7:40 PM in water in tankI more of a gas guy looking to get back into some oil work. I know sometime tanks get water in them which eventually could get to the burner and cause problems.
My question is how does the water get in there?
How do you know you have water in there?
How would you fix that problem to get the peoples heat going again?
@ February 20, 2014 7:35 PM in changing a garber filterHow would you fix or replace a bad valve if there is nothing before it to stop the oil?
@ January 26, 2014 6:50 PM in water in furnaceIt's in the basement, so it's not in a cold area. Also the combustion intake is on the top right side of the furnace where the leak is on the bottom left, so it's not close.
@ January 23, 2014 2:00 PM in water in furnacecustomer had no heat on a very cold snowy night here in the northeast the other day, but it started working erratically, and was working when I got there the following morning. I checked and cleaned all the drain hoses and trap. I checked the gas pressure, pressure switch pressures, and did a combustion test on it, everything was fine. The combustion inlet pipe is kind of low to the ground and I think a snow drift might have temporarily blocked it causing the erratic heat operation. Inside the furnace it was wet, not on the bottom where the blower is, but up in the burner compartment in the front of the heat exchanger where the drain hoses come out of the secondary heat exchanger. Nothing was obviously leaking, no stains of water or anything, but the tray was wet and it was rusted like it has been wet before. Any ideas? Can't be the secondary heat exchanger or I would probably see water on the bottom? This is a Ruud 90% about 10 years old.
@ January 12, 2014 1:34 PM in what to doSo a weighted barometric damper would work? Do you do this on your equipment ? I don't know what you mean by this " block off the integral draft hood or remove the external draft hood " Could you explain please? On n induced draft system there is no draft hood, unless your talking about an older furnace with no inducer motor.
@ January 12, 2014 10:25 AM in what to doallot of times when checking drafts on furnaces, I find the draft pressure to be higher than it should be. I know ideally we are looking for about a ,-04" draft on a conventional induced draft 80% furnace, but what would you do if the draft was higher? What if the draft was anywhere from - .05 - .15? If you check the sizing of the flue is right, if the gas pressure is right, how do you correct this? Could you put a barometric damper in the flue and adjust it with that? I'm just curious to see what you guys would do if this was your job? Obviously the furnace would work more efficiently if you could slow the combustion gases down where they should be so that more heat is extracted from them. What would you do?
@ January 7, 2014 9:53 PM in Am Stand flame flutter. blowing cold airRoscoe I'm very familiar with American Standard equipment and the gas valve on that unit definately has a place on it to check gas pressure. As everybody has said, first obvious thing is to make sure the gas pressure is right. I once had a customer call me with a similiar problem on his furnace which was also American Standard, and the problem was the holes in the outlet ports of the gas burners were plugged up. I'm assuming this has been checked by the first guy you had there, but you never know.
@ January 7, 2014 9:18 PM in 90% furnacesto help me understand this better, maybe by answering this question would help me. What would happen if that hose wasn't there? I'm assuming it would affect the manifold pressure a little?
@ January 6, 2014 7:54 PM in 90% furnacesusually have a hose going from the burner box then teed, one side going to the pressure switch, then the other one going in to the manifold side of the gas valve. Could anyone tell me what exactly this hose is doing? I know it has something to do with gas valve regulator, but I don't understand it. It is a low pressure, much lower than the lowest pressure the gas valve is sending to the manifold. Thanks
@ January 5, 2014 9:36 AM in Trane xe 90I agree you definately need someone who knows what they are doing. If your furnace is running to hot and going off on limit, that means your not getting rid of the heat it is trying to deliver to your house quick enough. Did anyone do a temp rise across the furnace, it should be between 40 - 70 degrees? Is the evaporator coil blocked up? I get this once in awhile especially with customers who have allot of dogs or cats, the hair builds up over time and restricts the air flow. It dont think your having any problems with the rollout limits because they have to be manually reset.
@ January 5, 2014 9:22 AM in prolem with lennox pulse furnaceI'm all about and take pride in keeping a customers furnace well maintained and running as efficiently and safely as long as possible. But unless this is your own furnace and you want to try and keep it as long as possible, I would advise the customer that it is time for a new one. I'm sure if you keep at it, eventually you will find the problem and fix it, but how many times back and forth to this customers house will it take? How many times are the neighbors of this person going to see your truck coming back and forth to this customers house and saying " what's going on over there" does this guy know what he is doing? And little do they know you are going crazy to try and save this dinasaur of a furnace. Then the homeowner themselves must not be to happy with their heat going on and off. Its time my friend, you did your best, your in business to make money. You did what you could for the Pulse, and the customer, now its time for it to go.
@ December 18, 2013 6:48 AM in combustion testThe furnace l was talking about was an American Standard furnace. It was a 90% with a positive draft. It had the option t be direct vented, but the installer chose to take the air from the basement. So there is a 3" pvc for vent pipe, and the fresh inlet is open. Like I said the 0xygen was high, and everything else was ok. What would you do?
The other questions I asked were hypotheticals. I wanted to know how a high td across a furnace would effect combustion readings, and then how a high or low draft would effect readings? I would think a low draft would effect the readings the same way as high td across furnace would because they both cause the unit to run hotter than usual
@ December 13, 2013 6:31 PM in combustion test- if your 0xygen and excess air is high say around 10.2 and 82% air, what would you do to correct that? I had a 90% furnace the other day that had these readings. co was low, gas pressure was good. if there is to much air, how would you decrease it if everything is fixed. This furnace was taking air from the basement for combustion.
- How does excess heat effect your readings? What would a furnace with a high temperature rise do to your combustion readings?
- how would a high draft effect your readiings?
Thanks in advance.