First spiral duct installation

[cholden324]

These are pictures of my first experience with spiral duct. There's not a lot of it but I still like the way it turned out. The biggest challenge was getting it straight and level.

The return duct was also a challenge. That big transition was really hard to install. It was bigger than I pictured when I measured all the duct up and ordered it. It's been a while ago, so I'm not exactly sure of the measurements, but I think it was somewhere around 48" on the long side of the return duct.

This job was a lot of fun. It was a complete new install so we hung the air handler and duct, ran the lineset and set a new condenser. I kind of wish that I had taken pictures of that too.

[qwerty hvac]

Looks good. Nice and strait. Did and engineer design it or was it design build?

[cholden324]

It was design build. Basically they showed me the space, and said "make something that will heat and cool this place."

[BaldLoonie]

What size equipment? Looks like a lot of work that came out beautifully.

[cholden324]

It was either 090 or 120. I can't remember for sure...it's been a while ago.

[Octopus]

Did you have fun cuttung that stuff? Looks great!

[bm4branes]

Sweet.
Why did you do the R/A duct the way you did? Ease of filter change? I like it regardless of reason. Laser levels/ plumb bobs make my jobs go better and quicker.

[cholden324]

The reason for running the return duct so far was primarily, ease of access to filters. This unit was in an industrial plant where they were very stringent on safety rules and cleanliness. Since the filters would need to be changed possibly once a week, I tried to put them in a place where a guy could change them from a 6' stepladder (no harness needed, safer). Also I tried to center the filters over the overhead door for aesthetics.

Yes, the laser level did come in handy.

[dodge]

It looks like you have two suction lines? do you or am I seeing things

[cholden324]

The evap coil was designed with two 1-1/8" outlets for suction and two 3/8" inlets for liquid. I had to install a 1-1/8" X 1-1/8" X 1-3/8" tee in the suction line because the rest of the lineset had to be 1-3/8". Likewise, the liquid line had a 3/8" X 3/8" X 1/2" tee.

[Lash]

Thats not a flat-s cleat on the 48" side... is it?

[cholden324]

No, I used rigid s lock but I turned the rigid side to the inside of the duct. I like the way it looks and I think its easier to seal. I don't usually do it on the supply duct (for obvious reasons) and I always try to make sure my return duct is large enough.

Wow, good eyes.

[stanbyyourword]

looks clean and professional, maybe split takeoff on supply air instead of flat? shouldnt matter much , nice job stan