Thanks for this excellent coverage of the differences between the two designs. It answered several questions for me and also provided insight how the systems deal with the problem of poor flame travel. Thanks!
With direct ignition gas valves, what tends to fail with those as they appear to be simple devices when taken apart. Is it the solenoid that allows gas to flow? Just curious. Thanks for your great instructional videos.
What causes failure are deposits on the flame sensing rod that impede the micro Amp DC signal from reaching the ignition module. Cleaning the flame rod is easy but usually defacto.
Another great video. Thank you again and Happy New Year. God bless. Is it typical or possible to operate as a service technician only or would you recommend learning the new construction or total system installation as well. Thank you again.
95% of what I do is service tech work. The 5% is doing new stuff like filling in during a staffing issue. Of the 95% maybe 5% is replacing a major component which is almost like a new install. I like doing the service side of things. I like the ramdomness of it and the whole figuring out the problem and solving it. The install side is really cookie cutter grunt work.. Some guys like that side because it's a little more cut and dry, they come in with a job to do and do it. I don't think the install side teaches you much of the troubleshooting side of it. You will become familiar with equipment and maybe get a basic understanding of things and helps teach you major component replacement. It would probably help in spotting possible issues caused by poor installation that a repair tech only might have missed. Being a tech would be helpful for installation, making you lay everything out to be service friendly for the future. I can't tell you how many times I've said what the hell was the installer thinking!". My long winded opinion is you should have experience in both as both relate to each other but you can do just one or the other. That how my work is set up. Installers install and techs do tech.
In some retirement communities particularly in southern New Jersey, I’ve seen them use a lot of oil filled electric baseboard heat. The advantage to those is the fact that they can be controlled individually or in small groups such as all in one room. This would allow you to heat only the room you want overnight and let the rest of the house cool down. The disadvantages to electric heat are that you need sufficient electric service coming into the house and naturally the increased cost of electricity. That’s just one mans opinion, wait for Craig to offer his. Good luck on your project.
First you had just a pilot light burning all the time. They made it intermittent to save gas and wear and tear on the pilot light sensor. Then they went to direct ignition.
@@Islamisthecultofsin lol. I didn't ask for a sequence of events. I get that. I asked why they bothered. They could have went right to direct ignition. The technology was there.
i can not find a single person with this problem 😂 my intermittent pilot flame is huge and its setting off the rollout switch. i saw yours its tiny. mines 3x that size and its tickling the top plate which is connected to a rollout switch. everything else is normal? ive tried cleaning it but not sure im getting it. i see no rollout in any other way whatsoever.
Hi do u have a lesson about non-programer thermostat .thanks I've bought on it does not work , it is a round type but it has 4 little switches when I check it it does not make sense It was $ 30 so why it only works with programer
The older technology was with thermocouples/thermopiles. When heated, the thermocouple would create it's own power by having a reaction from dissimilar metals. The newer systems, with flame rods, pass power from the rod through the flame to the ground. A rectifier in electronics normally converts AC current to DC. Like many use diodes to do it. The furnace amazingly uses flames to do so. The power is sent to the flame rod in AC. It then passes through the flame (converting from ac to dc) to the the metal/ground of the unit. Vala flame rectification! If there is no flame, poor ground, or if the rod is dirty, the power won't be sensed back at the control board. I was reading they were working on using the thermocouple technology for generating power in the future. Think about a metal roof of a house heating up in the sun. I guess techs will be up there cleaning it up with dollar bills when it stops working!
Thanks for this excellent coverage of the differences between the two designs. It answered several questions for me and also provided insight how the systems deal with the problem of poor flame travel. Thanks!
Glad it was helpful!
You do a great job at explaining things.
I appreciate that!
actually doing my course as a natural gas tech all your content is really helpful sir
Great short video! Happy new year!
Thanks! You too!
thanks craig for sharing!!!! HAPPY NEW YEARS.
Happy new year!
Great info. Thanks for sharing.
Glad it was helpful!
Very good👍
Thank you very much
Happy New Year 2021 !!
Happy new year!
Great video. Thanks
Glad you liked it!
great video
Thanks for the visit
Great explanation, thank you!
thank you for explanation
why my furnace cutoff after 10mn working?
Very helpful, thanks!
💯 thank you
You are so welcome
Do you know when you will have more pressure temperature chart in stock
They are now in stock, thanks!
With direct ignition gas valves, what tends to fail with those as they appear to be simple devices when taken apart. Is it the solenoid that allows gas to flow? Just curious. Thanks for your great instructional videos.
What causes failure are deposits on the flame sensing rod that impede the micro Amp DC signal from reaching the ignition module. Cleaning the flame rod is easy but usually defacto.
On the spark ignition is the small vale supposed to stay ignited even after the main burners are all lit and burning?
I hope I will learn more...
Is there a way to convert a LP fireplace with a pilot light to the intermittent pilot light system and change to an actual wall mounted thermostat?
Another great video. Thank you again and Happy New Year. God bless.
Is it typical or possible to operate as a service technician only or would you recommend learning the new construction or total system installation as well.
Thank you again.
95% of what I do is service tech work. The 5% is doing new stuff like filling in during a staffing issue. Of the 95% maybe 5% is replacing a major component which is almost like a new install. I like doing the service side of things. I like the ramdomness of it and the whole figuring out the problem and solving it. The install side is really cookie cutter grunt work.. Some guys like that side because it's a little more cut and dry, they come in with a job to do and do it. I don't think the install side teaches you much of the troubleshooting side of it. You will become familiar with equipment and maybe get a basic understanding of things and helps teach you major component replacement. It would probably help in spotting possible issues caused by poor installation that a repair tech only might have missed. Being a tech would be helpful for installation, making you lay everything out to be service friendly for the future. I can't tell you how many times I've said what the hell was the installer thinking!".
My long winded opinion is you should have experience in both as both relate to each other but you can do just one or the other. That how my work is set up. Installers install and techs do tech.
@@--harry_ thanks, that was excellent. Best answer I've seen so far, and the same question is asked all over the place.
Hi it's been confusing me. The intermittent pilot why use a pilot to fire the main burner. Why not direct fire the main burner instead.
What type of gas furnace would you buy if retired on limited income?
Goodman
In some retirement communities particularly in southern New Jersey, I’ve seen them use a lot of oil filled electric baseboard heat. The advantage to those is the fact that they can be controlled individually or in small groups such as all in one room. This would allow you to heat only the room you want overnight and let the rest of the house cool down.
The disadvantages to electric heat are that you need sufficient electric service coming into the house and naturally the increased cost of electricity.
That’s just one mans opinion, wait for Craig to offer his.
Good luck on your project.
Why did they even make an intermittent pilot furnace? As there any advantage over anything except constant pilot?
First you had just a pilot light burning all the time. They made it intermittent to save gas and wear and tear on the pilot light sensor. Then they went to direct ignition.
@@Islamisthecultofsin lol. I didn't ask for a sequence of events. I get that. I asked why they bothered. They could have went right to direct ignition. The technology was there.
@@engineclinic It was faster to modify what they had is why. The tech wasn't there yet. Politicians passed a law that said to do it now.
i can not find a single person with this problem 😂 my intermittent pilot flame is huge and its setting off the rollout switch. i saw yours its tiny. mines 3x that size and its tickling the top plate which is connected to a rollout switch. everything else is normal? ive tried cleaning it but not sure im getting it.
i see no rollout in any other way whatsoever.
The hole is probably too big. I'd get a furnace tech to look at it.
Hi do u have a lesson about non-programer thermostat .thanks
I've bought on it does not work , it is a round type but it has 4 little switches
when I check it it does not make sense
It was $ 30 so why it only works with programer
Microamps? How about milliamps?
Microamps is less than milliamps, my meter has a separate setting that I use to test for it.
👍👍
You lost me at ac to dc. Pulsating dc and flame rectification is used both smart valve and hsi.
Flame rectified Voltage changes thru the flame acting like a diode proving there a flame
Flame rectification is a ac voltage at a micro amp level that drops half of the sign wave. Making it a pulsating dc current.
The older technology was with thermocouples/thermopiles. When heated, the thermocouple would create it's own power by having a reaction from dissimilar metals. The newer systems, with flame rods, pass power from the rod through the flame to the ground. A rectifier in electronics normally converts AC current to DC. Like many use diodes to do it. The furnace amazingly uses flames to do so. The power is sent to the flame rod in AC. It then passes through the flame (converting from ac to dc) to the the metal/ground of the unit. Vala flame rectification! If there is no flame, poor ground, or if the rod is dirty, the power won't be sensed back at the control board.
I was reading they were working on using the thermocouple technology for generating power in the future. Think about a metal roof of a house heating up in the sun. I guess techs will be up there cleaning it up with dollar bills when it stops working!
Zzzz Zzzz