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Agree to disagree.

As I said, not knowing fan data, I gave possibilities.

If the airflow to the fan is restricted, the open door would/may provide design cfm due to reduced TSP.
Perfect world is to know design TSP...

Without fan test data, here's a guess of the engineers intent...

Opening the fan access door is a quick way to find out two possibilities...
1) if the upstream (to the fan) ahu dampers, ra fans,...

I don't remember any without correct answers. But they do have different test versions.

I liked the one that asked if more OA or RA would flow thru an AHU which listed pressure drops thru the OA...

I'd be interested to know where you took your Practical.
Sounds a lot different than the one I took in Philadelphia.
8 Hours of Proctored fun.

Passed mine a while back when the written was done...

Gotta have a thick skin around here sometimes.
I've done it...I think everyone who doesn't walk on water around here has also.
Welcome.

33 RPM kicks but

I applaud you on your obvious IT savvy which is beyond mine.
I can only say that bacnet mstp has proven reliable and we have never had any catastrophic failures on any of our jobs.
It...

Respectfully...
Dedicated bacnet mstp comms do not require any routing in our architecture. Thats the reliability factor required in a Class 1Div1/2 Lab environment. Of course there are better...

Our opinion is why have another unnecessary layer of control when all can be accomplished with the Jace.
And if the point count is excessive, we utilize dumb I/O like Neptronics to bring points in...

Depends on the Rev.
We use Jaces for direct I/O control with great success.
We have many sites. One has about 20 Jaces, most using NDIO on
Class1, Div 1/2 Environments.
We have standardized our...

I am also.

Apologies for the late reply...been crazy busy.
Yeah, the Camara had to go when the wife went. It was fun while it lasted...the Camaro I mean...Lol

I have had no luck using USB to DB9 converters when trying to connect to an SM2 Card. I even used BlackBox which I think writes the best Drivers. One trick you may try is to load PCTool, then shut it...

You've Got Mail.

Been a while but...
After connecting to the Card, find the "Archive Button" in the Pulldown Menu's. It'll create a text file (look for the path on the archive screen). This will give you all of the...

Anybody using a Balancing Software they like?
If so, please leave a Link or Name for it.
TIA,

Does anyone know of a quality supplier of replacement Bundles?
We have an old (R-22) 40 Ton Chiller that has collapsed waterside baffles.
Otherwise the Chiller is fine. OEM is not possible.
TIA...

Have some Jace 6's, IO34's, IO16's that got wet from a major Building Flood that
dripped water into the Jaces thru Panel conduit.
All had power but no Status and unable to Communicate to. One was...

Thanks for the reply.
Unfortunately this will be used by "Non-Technical People", so it must be all in one.
So far the Shortridge #ADM-850L is the best I can come up with.
Clunky, but NIST...

But it has to have a display that shows 4 places to the right of the Decimal Point.
Like providing a reading of 0.0045"w.c.
Anybody know of such an animal?

You can simulate XP in Win 7.

I'm still trying to determine what the leaks are caused by.
Cracks are not acid-related...but are vibration/Manufacturing-related.

Leaks are on one circuit of the 2-circuited condenser coil. One circuit leaks, you have to replace both.
What kind of leaks did you have? Cracks at the Tube Sheets?

I'll find out.
Thanks for the quick reply.

We have a site with two Aaon unit model RN060-8 that has dual circuited coil that are getting non-repairable leaks in the coils that are necessitating coil replacements before half way thru the...

We have done a couple Staefa (Legacy...not Talon) jobs with Smart Cards and have experienced no Integer problems.

Sounds like something loosened up and is banging against your mobile home's support structure.
Crawl underneath while it's making the noise and see if you can locate it. If it's obviously something...

I have an old Laptop that needs replaced.
I am looking at a Sager with an SSD running Win 7 Ultimate (Win7 or XP) and an HDD for storage.
Question: Can I run my Legacy Software without violating...

Maybe right on the verge of dying...like a flashlight going dim...keeps surging above and beyond the battery pass/fail voltage?

Not trying to be a Smart*ss, but why not change the battery?

Been a while...but I'm back...like a bad penny.

Question: How often do you replace your PM Contract Jace Batteries?

The Manual says every 3 years, but later on says every year if Jace ambient...

Good News, I am not going insane.
As explained to me yesterday by a Support Tech from ComfortSite:

I am a "Customer" who pays for ComfortSite, not a Corporate Client. So I cannot have access to...

Ok, to hopefully prove I am not going (more) insane, attached is a pic of what I see when I open the Tech Support Tab...no software updates and tools.

I just was at the ComfortSite/Tech Support, and there is no Software Updates for Summit SP's.
I also checked Trane Tools and couldn't find it there either.
Any ideas where I may look for the SP10,...

Thanks for the heads up, but no 3D Graphics at this Site.
I have never ran into them.
What's the File Extension on them?

Thanks!!!

And the service pack will encompass all updates since the base v17 so you only need to run the newest release service pack rather than all of the previous ones combined.[/QUOTE]

Thanks for the...

I have a site that has a desktop PC running Summit V17.00.0074, SP 4

The Customer requested I load another Summit Software, V17.00.0046.
I was able to load this version on a Laptop and get it...

And you've got mail.
Sorry for not answering the other requests...been buried doing other things.
Not enough time to visit here regularly, but I'll try.

You've got mail.

The job got handed over to another Tech.
But I'd still love to have anything that will help us with the CCN.
Sorry for the late reply. this will be my record...2 years to reply!
Thanks.

I saw mostly Copelands when I was in Refrig a while ago.
I'd imagine without the Reservoir setup, a lot of valve plates would get eaten up...especially after power outages.
I always thought the...

As I remember, didn't all those old Hill and Hussman racks have the Temprite oil separator, reservoir and also oil floats on each Copeland compressor...and sometimes oil equalizer lines also?
The...

Cool Concept.

I did confine my explanation to comfort cooling as in DX. So I didn't cover Low Temp Apps.
As far as the order of unloading...I was referencing the HGBP as the first active step of unloading. Then...

Wouldn't low head pressure be a concern at low outdoor temps (say just above Economizer Changeover) running all 3 fans with one Compressor?

What replacement motors and blades do you suggest?

All good stuff so far.

Question: Does the rack have a discharge oil separator?
I remember the Temprite Separator screens would get partially
clogged and the oil...

Here's what I have done for years.
First, when you have HGBP, you must have Condenser Fan Control to prevent low Head Pressure. That's because some of your Discharge gas is going to the Evaporator...

Good idea.
I was thinking, depending on how the Header/Suction Lines are piped...that he could come out of the bottom of the Header and run the 1/4" line up to just above the top of the Header, then...