It’s easy to adjust the temps using the controller that comes with it but it’s mostly made for only higher temperatures since these fans are meant for attic exhaust where it would only cut on when it gets to a set high point...in my case I wanted to constantly pull out the heat and not let it build up so I bypassed it.

Take a look at my post of my setup.  I'm using similar fan and it works great.  I got the red fan with higher cfm and bypassed the thermostat switch and its running 24/7 non stop for months now. 

Here a link to my posts.

https://bitcointalk.org/index.php?topic=2312465.msg29355077#msg29355077

I need to purchase one.  How much for shipping to South Carolina?

Got any more??...missed this and now perusing Bay Area coins thread and looking into it...

I'm in South Carolina.  Power is roughly 10 cents here for me.  I hope to grow a little bigger in 2018, possibly looking into GPU mining next as I better understand it.

The hot wall...



Inside the hot room and looking at the exhaust fans running.  Need to get those few loose cables tied up now that I see this.



Intake wall on the inside.  I use cheap filters that I change out each Sunday morning.



The worse looking rack of wires, but I've been busy with work.  Once I get some more machines to fill in the spaces I'll clean it up and label everything.  



My vertically mounted breaker panels.



The finished exhaust and intake wall.  I will probably need to separate the two with a partition especially once the warmer weather comes to prevent pulling in the hot air being exhausted.  Board temps are doing good staying in 33-46 range.

Forgot to update this post will add pictures soon.  Been mining about 2 months now.  Temperatures are very nice so far.

So got started on Sunday afternoon doing some work in my spare time.  Been a busy few weeks with acquiring another business and halloween etc.  But finally did some work on the mining room setup/project.

I'm trying to take photos as I go so maybe it will help other or give people ideas on what to do.  I'm learning as I go so I will make mistakes, but the feedback from the forum has been great and gives me perspective I may have overlooked.

I've posted some general photos of what has been done so far.

Few speed bumps I hit.

Home Depot screwed me up good.  I ordered some louvers vents for the exhaust section.  They sent me two in packaging with the right model numbers, but one of them was a different product inside the box.  So I was only able to get one aluminum vent mounted.  The other hole we blocked off temporarily until we get the replacement vent.

The fans were a bit larger so they had to go a good bit above the floor because of the space constraints.  I didn't want to remove the aluminum window framing as if and when I do expand I plan to restore this room back into the storage/office area it originally was.

The worst setback was me not knowing that my property has 3 phase power.  I had purchased 3 200amp Siemens single phase panels as that was what I am familiar/comfortable working with.  My electrician buddy who was going to mostly do all the work but let me help him, enlightened me that he could make it work since he did some sort of load test on the 200 amp source breaker to make sure it would trip out.  But then I would have to remember that two poles would give 220 and then the next would be a single phase which it didn't make sense to me and was confusing the hell out of me.  So I told him would it be better for me to have a 3 phase panel and he said ideally that is the best route to take.  He's aware of my skills, and that I would be okay, but I have various guys working at times and didn't want to risk someone getting hurt over trying to 'make things work'.  So we placed orders for Siemens three phase load centers.  (Almost double and some more than the single phase price).  So hopefully will received the new 3 phase panels this week.  Also he recommended that I only put two load centers at first and he would 'pre-run' the third panels wire but not tie it in.  Just have it wrapped up and put away so that it would be easier to add into the future without much work involved.

If I was do it again, I would stack the fans vertically not horizontally as it ate up a lot of the space.

Here some photos of what we did so far.

Removed the glass windows and the frame pieces holding the windows.  



Made a hole in the floor for conduits for the wire on the cold side.



One window boarded up.  Each window uses two sheets of plywood.



Both large windows boarded up



Prepping install of the exhaust fans.  Marked and working on cutting out.



First hole cut out for exhaust.



Holes cut out and fans mounted for exhaust and intake sides.



So fans are mounted minus one exhaust vent.  Returned the old one and picked up new on at the store today.  Plan to get some 'free' time and work for a while finishing things up.

Thanks for your input.  I do plan to make it as tight as I can.  Of course will try to seal it in air tight with some good sealant in areas that are hard to 'maneuver' around.

Yes the breaker panels will go on the cold side at the back wall.  There were some updates so now going to do only 2 200 amp panels instead.  See below as I will post updates on my adventure.  I hit a snag on the electrical portion, but already have solution and hope to remedy by Thursday this week.

The windows are completely removed and boarded up.  We installed fans.   See my updated posts following this one.

Looks like lots of fun.  I'm basically working on getting ready for the same thing.  I have 12 coming in about a month, and I've just recently committed to 7 more if all sellers come through. 

I was looking at how you did the PSU's.  Could you or would you recommend doing the same setup of 2x6 rack for PSU's in the front or over top of the D3's.  I just wonder how to do the same setup as you all stacked next to each other.  I guess once I get a few units in hand next week (hopefully) if deals come through then I can start playing Legos with them and build/stack them around lol.

I got 8 of the exact same.  Been looking for a few more to have as backup and to be ready for next expansion.  Took me a while to browse and learn what all I needed and takes time to get all these things in and getting time to do all the physical work as well and maintain normal life,work, etc.  But taking my time and learning all I can so I can be better prepared once I max this room out at this property.

https://www.ebay.com/itm/Genuine-HP-EO4501-Server-Power-Distribution-Module-228481-002/232449268221?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Also you are so correct on the price increase.  I was waiting for like two weeks for items to come back in stock and then when they finally did, price did significantly increase.  I guess with BTC increase its just increasing demand.

I do see your point on the AC.  I am likely to take your advice and forget about it.  If I do then that means I will be able to make my intake vents even closer to the ground.

As for power actually that is being installed this weekend.  Yes it is 3 200amp panels.  Having multiple Nema L6-30R installed as I am using 30 amp PDUs on 30 amp breakers.  And since I will have 220 I am using power supplies from parallel miner and some from bitmain.  That receptacle we see in the picture is what was prewired in the wall.  It will probably hang around but won't be powering much other than maybe a desktop to remote in on the same switch to do some monitoring etc.

I totally agree with you about putting a separation on the patio area between exhaust and intake fans.  I really liked the idea and will for sure implement something into the setup as such. 

Most definitely there will be final touches and cleanup, but we basically pulled off old things that were attached to the walls and left it as is for now until we build the separation on the inside of the intake/exhaust areas.  Then we are going to 'finish' it and of course will be putting in new LVT flooring or VCT tile depending on what we have in excess from leftover work we do in the property.  I've got a room full of this and that comes in handy with leftovers of various repair jobs we encounter.

The PTAC is a 15,000 BTU air conditioner that I was planning on putting into the slot.  I have lots of these units in spare (these units are normally used in motels/hotels for through the wall installations) and figured I'd just put one in that slot on the right window bottom as that is what is supposed to be for.   I'm not planning on running the AC but figured for the really hot humid days we occasionally get (I'm in South Carolina) I figured it couldn't hurt.  Since there is not additional investment of actually purchasing the unit, and its just sitting in the storage rooms on pallets figured I'd snag one for the 'mining room'.

The fans do have an adjustable controller option.  I'm not sure if I will use it yet.  Also they have a temperature module, and I was planning on bypassing it but I have a spare intake and exhaust fan in the plan as well, and was thinking I could keep the temperature module wired in them so they would only cut on if the temperature reached a certain threshold.

You are right though about having a little bit of redundancy especially with the amount of heat.

Alrighty.  So I've finally received all my materials this morning.  Was waiting on the fans to arrive.  So I'm starting the setup of my mining room for anticipated machines.  Already have 5 Avalon 741s on hand and want to get ready for the rest of the gear on its way.  There will be approximately 4840 cfm (22 @250cfm) of air exhaust by the machines.  (total of 22 machines bought and paid for so far, with possibly 5-10 more machines in the works soon)

Feel free to critique or recommend anything else.  I start this Friday putting the wall up to separate the room.

Room dimensions are 8'Long x 8' wide x 7' Height

The wall with the mining rack will have cutouts for the miners exhaust to fit into the exhaust room.



This is the fans I am using:



Here is the room as it sits right now.

outside window wall



inside window wall

https://i.imgur.com/YLkZalN.jpg

inside general area of room

I recently ordered from them and the whole process was pretty simple.  I am located in USA.  It took about 3 days after they sent me shipping information to receive them.  Everything was packaged well and so far so good. 

I liked how they accept credit cards which offer plenty protection.  But in my first experience with them I feel good about dealing with them in future.

Thanks for catching that.  Its been a long day for me, I shouldn't be on here but was doing some light browsing before bed.   Your correct he should be good with that fan. 

I have read in multiple places on this forum that each S9 puts out about 250cfm of air.  So if you got 10 of them you'll need to exhaust 2500 cfm of air.  If your fan is 5000 cfm, then you should be good.  I would consider two fans if I was you.  5000cfm for exhaust, and 5000 cfm for intake.   At least that is the setup I am trying to go for.

I am using 4 of these fans.  2 for intake 2 for exhaust.

http://www.homedepot.com/p/QuietCool-Professional-3013-CFM-Power-Gable-Mount-Attic-Fan-AFG-PRO-3-0/206047381

I'm no expert at electricity either, but wouldn't using 110v increase the number of amps required by each miner, in turn getting you faster to your threshold of amps in your breaker panel...for example if you run 10 machines that use 5 amps on 220v and 10 amps on 110v and your panel capacity is 100 amps.   so using 20% threshold rule you got 80 amps as a max (i might be wrong about this) then that means if you did 220v you could run 16 machines vs if you ran 110v you could run 8 machines.  I may be totally wrong but I'm sure someone will correct me if I am.

Just be careful with this.  These 220v lines are no joke, (heck that goes for all electricity). I see you've got it in a confined space and whatnot, but make sure no children or even adults messing around in the area.  You could probably get away with it at home or shed/outbuilding, but where I am in commercial spaces, I'd have to have it in conduit and plugs mounted on the wall.  My local fire marshal would have a field day if I tried this but then again I'm dealing with the public on a regular basis.