HVAC - Direct Fired Make Up Air Unit

[@johntaylor3043]

To the point and informative, no fluff. Right on brother.

[@buildingmanager-marymother499]

Thank you for actually showing each component and explaining in detail. I've seen videos similar to this with no in-depth explanation.

[@keepthinking2666]

Old school dfnp-20 nice

[@herbertbaum6899]

Thank you for the video! Question: when and if the flame stops, is it whenbit reaches the set temp. Inside?

[@RagingOatmeal]

Ehh. I spend a full day changing filters on those exact units. Them things are crazy cool. Can’t wait to learn more about them

[@HVACKnowItAll]

awesome good shit

[@marcusmitchell95695]

Dope video brotha thank you 🙏

[@HVACKnowItAll]

thank you!

[@ryanwilson3049]

Thanks!

[@fredmeebley]

Good video, thanks for sharing.

[@HVACKnowItAll]

you know it!

[@vacuumboy6.0]

Very simple and robust design. Alot of this equipment is very simple if you are mechanicaly and electrically inclined 👍😀

[@HVACKnowItAll]

Yes for sure, thanks for the comment

[@JuanTodoli]

Cristal clear explanation Gary. Thanks for posting.

[@HVACKnowItAll]

Thank you and you're welcome

[@anilksingh650]

Thank you for making best info video then rest, I have similar one in my facility and today, it got flame failure error and I resetted twice, so I have to open Burner door and clean flame rod after that fire it again and it's worked after since, can you please make a video how to change damper actuator, please and thankyou, keep up the great work bro.

[@azhvacr2332]

Great video!👍🏼🤘🏼✌🏼

[@logancalgaryriverbug2815]

Hello Just a brief suggestion it is possible you air pressure differential switches are no set up correctlly unless you had the low jumped out. The reason I say this is normally the flame should drop out on low differential if the door is that wide open. Good video

[@HVACKnowItAll]

Thank you, the door was actually only open a few inches at the top just to stick the camera in. But yeah you are 100% correct.

[@dougshakell8003]

Code in Canada states filters are to be metal frame. If the cardboard gets wet or plugged they can be sucked into burner and set fire.

[@HVACKnowItAll]

What code book is this in?

[@yetanotheaverageguy]

How many BTUs does that burner make and what's the combined CFM of the exhaust fans? Looks like a clean burning flame for so much turbulence.

[@HVACKnowItAll]

Sorry, I don't actually have the cfm info, we didn't design or install the equipment. I can't recall the btu rating on that lol, sorry not much help am I.

[@ultimatecarguy]

great video I had a very basic understanding about how these units work. This was straight to the point and very informative.

[@HVACKnowItAll]

thanks buddy!

[@khaleel588]

This roof look so much similar to my previous work place. It this site in Mississauga?

[@totaltech8246]

#Dopeness

[@HVACKnowItAll]

#makeupdopeness

[@MrAniven]

Hipster music

[@scottvanruin6481]

Those burner eye windows are useless in those places, yes you can see flame sometimes but you can't see the full length of the burner, especially for setting low fire. Captiveaire does this, 👍, Engair junk does not amongst others.

[@jonminnella4157]

I know such a piss off thy should make a better system

[@jyphc1679]

I can’t ur voice because Background music

[@HVACKnowItAll]

I can hear my voice just fine...There a couple times when the wind is strong but that's life in HVAC

[@michaelmead5880]

Awesome video! I myself am a Contractor who works In Ontario, Canada. Where are you located and are you self employed? Good explaination of how everything works!

[@HVACKnowItAll]

Hey Michael, not self employed, most of my work is out of Mississauga

[@michaelmead5880]

@@HVACKnowItAll Right on! Good to see another competent Tech around. Are you mainly commercial service?

[@HVACKnowItAll]

@@michaelmead5880 yes pretty much

[@texture6]

At 00:38 it’s not an Economizers and at 01:15 the vertical filter position provide better static pressure since it’s in a vertical position and is more rigid.

[@HVACKnowItAll]

Who said it was an economizer?? The filters definitely have better structure in vertical position, what do you mean by "better" static pressure? If you mean lower, I haven't seen any evidence to support that even with a magnehelic attached.

[@ronpowdrell6608]

Texture6. On a make up air unit we don’t worry about static pressure cause there is very little duct work attached. Economizers are attached to a package unit to provide free cooling. It’s controlled by temperature/empathy control.

[@texture6]

Ron...Thank you I appreciate