- Видео 49
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Dunham Service
Добавлен 12 июн 2022
Sharing HVAC knowledge with the world.
Attic Duct Air Flow Issue
This video explains how manual balancing dampers were added to a duct system. Adding these dampers allowed the system to be balanced to create a more even temperature throughout the home.
Просмотров: 59
Видео
Replacing A Boiler Zone Valve
Просмотров 210Год назад
This video show a walk through of the process of replacing a White-Rodgers 2-wire boiler zone valve.
How To Solder: Prepping A Boiler Zone Valve
Просмотров 359Год назад
This video is a demonstration of the soldering process on a boiler zone valve. This is in preparation for a repair that will be taking place.
Brazing A New Air Conditioner
Просмотров 884Год назад
This video shows that process for brazing the copper lines to an evaporator.
FAQ #1 What Does HVAC Mean?
Просмотров 15Год назад
This video explains what HVAC stands for with some examples.
Is Your Furnace Old? Should You Replace It?
Просмотров 109Год назад
This video is a walk around of a 1960s furnace and water heater, looking at its condition after a recent repair. We discuss factors to consider even looking at replacing a furnace.
Brazing Copper With No Fittings
Просмотров 779Год назад
This is an old walk-through of two different methods for swedging copper to allow for a solder or braze connection without a separate fitting. This is a must have skill for the HVAC technician in the field.
Copper Flaring
Просмотров 89Год назад
In this video I walk through two simple methods I use to create a quick and reliable flare connection for joining copper tubing.
Furnace Troubleshooting Walkthrough
Просмотров 157Год назад
Brief overview of a walk through of the troubleshooting procedure on an older furnace that was previously installed in our home.
Electrical Furnace Wiring
Просмотров 23Год назад
This video shows the prep work to a furnace before it is installed. The goal here is to reduce the time of installing the new furnace. This should save us around 20 minutes on site. #hvac #furnaces #homeheating #hvacmaintenance #hvacservice #electrical
Oxy-acetylene Torch Setup: Tips To Get Started
Просмотров 23 тыс.Год назад
Oxy-acetylene Torch Setup: Tips To Get Started
Hi, if I'm using non-refillable small gas tanks (propane or MAP gas) with oxygen, do I need pressure ajuster on it? We bought very simple brazing kit for bicycle store and by default no one selling kits with those ajuster on fuel tank (only on oxygen). But I can hear that when I close the fuel tank and release gas from hose that there is much more "hiss", so there much more gas going out, more that from oxy tank where I adjusted exit pressure to 10psi.
Use some flux and a little more heat. Your joints will look better.
You don't use flux to braze
That's the way I was taught 40 years ago and it's served me well for 4 decades. Tell me, if you don't use flux to braze, why do they make and sell brazing flux?
Awesome brother!
@7:51 exuse me not 10 lbs of pressure!!!! This guy!
Great vid. Easy instructions. And detailed
Copper fittings are amongst the cheapest fittings available, especially as compared to press fittings and fade or rotolock fittings… and FFS , as an Australian plumber who’s had the benefit of a reasonable English education, it’s not swaging pronounced “swedge-ing” it’s “swayg-ing” …like swayze..
Lol, you stood clear of the oxygen regulator valve when u opened the cylinder valve but when u opened the acetylene cylinder valve the regulator valve was pointing straight at your face. Nice safety video.
Acetylene is low pressure
I’m getting ready to buy one of these rigs from eBay or Amazon to melt gold and silver. When I go fill up these tanks will the company take them away from me and give me their crappy ones or will they just fill them up for me?
They take the tank and whatever is in your pockets. They will also need your ccv number and social security number.
You recommend those bits than hydraulic swage?
We actually have both in our trucks. Each have different applications the where they shine.
Nice! What is the chain actually for?
My heil 7000 furnace is not working. Wont even turn on. Can hear the click but does not turn on at all. Called the electrician he says nothing is wrong with the power going to the furnace. Do you think it could be the main board like yours? I looked for the fuse but in the older furnace like ours i dont see one. Please lmk
😂😂😂😂🎉🎉🎉❤❤😮😮
Paka
Good video thanks
I notice you had no flash back arresters
I can never get this to work. My flame is either too big/long to fit in tight spaces or too cold to braze copper or too hot and cuts holes in the copper.. i have the Bromic brazing kit. A work mate of mine was able to make a TINY flame which was able to perfectly melt and seal solder to copper in under 20 seconds
Please inform how many prices in this
A very helpful tip is to pour Ammonia onto the pipe before brazing.
👍🏾👍🏾👍🏾
👍🏾👍🏾✌🏾
when i braze in a new compressor, scroll copeland, i need to have nitrogen, its it correct that i put nitro on low side and blow out on the high side? Becuse the compressor have a rewerse seal on high side in compressor and can damage the seal?. correct? so its ok to flow nitrogen in to the compressor while braze?
As long as the nitrogen will flow without building pressure on the low side. I try to follow the normal refrigerant cycle for nitrogen flow.
Awesome demonstration
Thank you! Cheers!
Wow can we say overheat.
Overheat
Good job! Thanks
Question do you know if i can leave my torch setup in my shed without insulation or is that to cold
My torches ride in my service truck and the back isn’t heated. Never had any issues with them not working. Toughest thing is in cold weather it’s just takes a little longer to warm the metal up you’re working on.
@@dunhamservice literally a thanks man!
@@dunhamservice I'm happy got my torch running
Good to hear youre flowing nitrogen. I think sometimes shady companies dont do this for future service calls. Great video sir
Thanks 👍
Hi Matt. For this copper pipe brazing, using induction brazing will be less polite, less fail, less over burn , fast precise. I have many videos for copper pipe brazing in my channel. But, have to admit, if for personal use, flame brazing is money saving than induction 😂
Good job, I've been working with Oxy torches for over 50 years, I learned flame shut off procedures in High School Metal Shop class, Acetylene is turned off first then the Oxygen. This sequence prevents flame flashback into the Acetylene hose. I remember my metal shop teacher intentionally inducing a flashback into to the Acetylene line, the tip popped and started whistling indicating that the flame was sucking air through the tip and traveling up the hose, the teacher immediatley shut off the Acetylene at the tank. There were a lot of nervous kids during that demonstration. Remember kids, if you want to see your next birthday shut off the Acetylene first then the Oxygen. Good video.
What a lasting impact.
What about for propane? Same gas first I shut off?
@@iliketurtles2993 Yes, gas first for propane as well. It is possible to get flashback up into the O2 line but shutting off the gas first extinguishes the flame to prevent O2 flashback.
Please for the love of service flow nitrogen on refrigerant lines, boys! Great video! I call that newbie maneuver you showed “painting the solder” lol. I see it once every training class covering soldering. Also, typically the first thing I do when I pull out a stick is bend a 90 into one or both sides for easier maneuvering around the joint, especially when there are more times than not where I can’t access 360* around the line as you stated.
Thank you for the great comment!
Best video on RUclips explaining oxy acetylene correct practice steps
Thank you for the kind words!
Was a commercial/ industrial HVAC tech for 22 years. Slightly different view than residential guys. My opinion is to inform them of the cost savings vs the cost of replacement. If it's safe then no true need to replace. I also was not a salesman in any way. Unless a unit specific part was no longer available or the cost of part outweigh the cost of replacement, we would repair. Again, I understand that commercial/industrial is a different beast.
That is a good perspective to have. We try to ensure the customer has the information they need and all their questions have been answered, then allow them to make the call. This old Williamston will be plugging away for several more years.
Looks great. Is it better to apply silver stick to bottom or top first?
I usually work up because heat rises.
Follow the heat
If you read the manual for that victor set it says 5 psi for oxygen and 5 psi for acetylene. Maybe follow the manufacturer instead of some jackass on youtube. No way in hell you need 7/10 on a baby brazing tip
Ran 7/10 for years with no issue on this set as well as many others. The important thing is getting to a neutral flame. 5/5 probably would work just fine. I’m usually running a triple tip when doing work, so you are pushing a little more fuel than this 0 currently on this setup.
Got a link to brazing video?
ruclips.net/video/5FEhaceHhWI/видео.htmlsi=VclNRXSr1x6mqk5w
Enjoyed video.
Glad to hear it!
Just saying, your picture that comes up on RUclips advertising this episode shows the flame from the torch pointing right at the tank and regulator assemblies. Not a good look. I'd change it.
That is a great catch, RUclips just grabbed an image from the video. This was one of our first videos before we knew about custom thumbnails.
@11:48, it looks like hes trying to make a tictoc video titled, "we torch an oxygen tank for likes".
If it’s over 15 it’s not gonna blow up it will start drawing out that acetone and it will come out of the tip
If cylinders are tipped more than 15 degrees the acetone can be drawn out with the acetylene and the flame will sputter. Without the acetone creating a composition in the tank, acetylene will explode at over 15 psi. Here is a link to an article discussing the specific of acetylene storage and usage. ehrs.upenn.edu/sites/default/files/2018-02/Acetylene%20Fact%20Sheet.pdf
Amazing what comes out of these vents!
Glad you enjoyed it!
I'm not that smart but ok for a fact nothing gets clean that ez
Right tools make all the difference!
#1 cause of house fires right here folks! get your shit cleaned. always surprises me how some people can go years and let all that lint back up like that.
So very true!
Good video Matt. I thought your video was very informative and easy to understand. RUclips can definitely be a tough slog. I learned quite a bit about video editing when Covid forced us to teach virtually. I’ve got a channel that’s been mildly successful so if you have any questions, don’t hesitate to ask.
Thank you for the feedback!