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In our area the OSHA director is big on 70E. If/when OSHA comes on site if you don't have a plan in effect. You will get a fine. Also every person working on electrical at the time of walk throught...

I had to set up a study and training for 70E. Had a company come in, like was said earlier its interesting in what is a class 0 and what is a class 2.

Our training is set up for next week....

No wouldn't extend. But got 6 hours of overtime and 4 hours back on PTO. Only was there for a couple of hours, wife wasn't happy but will be when the next pay check comes in.

On vacation this week get called in for no heat. No one on can seam to figure out why this one RTU can not supply enough heat. Checked on BAS system and see unit is only running at .25 pressure set...

Thermo Scientific and NorLake scientific refrigeration products

thermoscientific or Masy out of Massachusetts. Masy makes custom units.

We have both and have had good luck with both of them.
Thermoscientific are smaller units around 36 Cu. Ft. and running at...

Drazen

I've answer in red.

- did you take look at your cooling coil construction? do they have condensate sinks bellow them or not? Yes coil total size is 10 x 12 feet. 4 circuits each being...

superfittertech

That kind of was my feeling at being, that Preheat was for a load, to make more stages come on. Good point about the coil. The 1st stage right now is top of coil getting cooling...

Hey guys I lower static pressure to 1.25 and as of now. About 4 hours DAT has been with 1/2 degree of 55 since. Before I would be lucky if I could hold + or - 4 degrees. The engineer isn't happy, but...

Delta T.

thanks. As for "do you have critical temp/humidity control requirements within all of these labs? "

As of right now no we don't. I couldn't get it with the way the control system...

Behappy,

After looking at the specs again this morning. That was something I was thinking also. Why static so much higher then design. That's one of the reason for putting the design info up....

ChrisTechMech

Thank you. I like the idea of doing the enthalphy chart.

ChrisTechMech you stated" One other thing, a pre-heat coil will not "remove moisture"". This is the issue I'm having...

DeltaT

Thank you for you info. I read original specs, and talked to manufacture before I posted. That's why I'm asking for help here. Lot smarter people on this site then me.

*The design...

CNAY20
There are reheats at about 70% of the vav boxes. The only heat in unit is a snow melt and a preheat before the DX coil. Sorry I haven't been able to check dp/wp.

A little more info:...

Hey guys question about heating air before cooling. I've got two energy labs machines each at 200 ton DX cooling, with snow melt and pre-heat coils running 100% outside air. In central New England....

Go to Mass Department of Public Safety web site under oil burner it now gives you some study guide info.

Make sure you read understand and know 527 CMR 4.00

From the Web site:
The...

Printer2 you are right that is how our system is set up.

At the hospital that I used to work at we had that same set up that you are talking about.

The hallways are about .05 positive to...

In the facility that I work at the rooms are negative to the hallways. The suites and packing area hallways are postive to the rest of the building areas also. all the filted air goes in to the...

At least the bag in bag out filters are on the roof and easy to get at. Ours are up about 10 feet in the air above the drop ceiling.

Is the red wire a fire alarm wire?
Call them back and tell them pull the wires in the right way. Must be the old "looks good from my house"

Still looks the same as the one I learned on way back when. Those old black meters would take a beating. I miss those meters.

For me. It's tipping over. :oops: The 250 we have in our plant area seem to loose a little bit over a years time to evaporation.Takes a couple of years before they need a top off.

I got this bag for a great deal from my electrical supply house 2 or so years ago. I used it for about a month and hated it. I didn't like the way tools fit in the outer pockets, always checking...

Here is a link to the web page for the mark 2.

http://www.dwyer-inst.com/Products/Product.cfm?Group_ID=260[/URL]

I hope this works never did a link before. If not just do a copy and paste.
...

Anyone in Massachusetts or southern New hampshire know anything about a company called New England cooling towers? Their office is around Lowell. Any info would be helpfully..