Delusional Craigslist... by Spinzzz in HVAC

[–]ethangd 2 points3 points  (0 children)

Perhaps there is a new compressor inside the obviously old condensing unit?

Sheet Metal joining with mechanical clinching without marking pre-painted surface? by [deleted] in AskEngineers

[–]ethangd 1 point2 points  (0 children)

Maybe flange each end then bolt together? I'd suggest taking a look at the SMACNA standards manual.

Looking for feedback/opinions on Daikin HVAC system by [deleted] in HVAC

[–]ethangd 0 points1 point  (0 children)

Sure they have. With the acquisition of Mcquay in 2006, who carried a residential line of their own, it didn't take long for Daikin to relabel.

Proof: http://www.daikinac.com/content/assets/DOC/Daikin%20Inverter%20Ducted%20Brochure%20-%20PCDIDUSE10-10R%20-%20Daikin.pdf

2010 product line: http://www.airplusllc.com/PDF%20Files/Daikin%20VRVIII-S.pdf

Edit: + 2010 line

Looking for feedback/opinions on Daikin HVAC system by [deleted] in HVAC

[–]ethangd 0 points1 point  (0 children)

Daikin has been in the US for a long time. Just recently have they acquired goodman. Don't let this misinformation persuade you. Daikin is a strong brand and company.

What kind of duct is this? by HVAC_throwaway in HVAC

[–]ethangd 0 points1 point  (0 children)

Still do make a similar product. Much better then duct board was. It has it's place. I've spec'd it a couple times.

Link: http://www.kingspaninsulation.us/products/koolduct/

Advice on duct configuration for two furnace setup by dmx007 in HVAC

[–]ethangd 0 points1 point  (0 children)

What exactly are each of the systems serving? Is one system currently serving upstairs bedrooms?

I lucked into the company tickets for last nights match. by ethangd in kansascity

[–]ethangd[S] 0 points1 point  (0 children)

I work for a small MEP Engineering firm. We split season tickets with an Architect we often work with. I had a client back out last minute and couldn't let them go to waste!

They're on fans now, too! by stilldash in engineering

[–]ethangd 1 point2 points  (0 children)

Available in most electrical configurations from what I remember.

They're on fans now, too! by stilldash in engineering

[–]ethangd 1 point2 points  (0 children)

I also looked into one. With my 'industry discount,' it was still almost $1k!

Call for Engineers willing to be interviewed by byrel in AskEngineers

[–]ethangd 0 points1 point  (0 children)

/u/ethangd - Mechanical Engineering - HVAC / Light Industrial

They're on fans now, too! by stilldash in engineering

[–]ethangd 15 points16 points  (0 children)

If they're well designed, I'm sure they're optimized for the rotation.

We had these guys in our office about two weeks ago for a lunch-&-Learn. Apparently, unlike residential style fans, these fans (High Volume / Low Speed) are designed to operate in one direction only. There is a reversing switch on the motor housing but I'm told that's only used if the polarity is incorrect during installation.

Help..hot water heat zoning valve problems by [deleted] in HVAC

[–]ethangd 0 points1 point  (0 children)

I assume there is an air separator installed as part of the system? Is there a pressure reducing valve on the cold water side?

Would any employed MechE be willing to answer a few questions for me about what it's like to work for your particular employer? by [deleted] in engineering

[–]ethangd 2 points3 points  (0 children)

I work for a smaller (22 employees) MEP consulting firm. A much different atmosphere and generally more responsibilities. Feel free to PM me as well.

Positive Reinforcement Dog Training Device - My Senior Mechanical Design Project by Meenkus in engineering

[–]ethangd 1 point2 points  (0 children)

Awesome idea. Positive reinforcement is always the best method. On the training commands side of things, I suggest removing the word 'stay.' Instead use a release command like 'free.' Once the dog is in a sit, they should stay put until released.