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As a cancer survivor myself, I was told by my docs to "cover up". This is what was recommended, expensive but very effective:
http://www.sunprecautions.com/

J

Your problem will not be when one zone isn't calling but when JUST ONE is. I have this exact same setup in my home with 5 zones. It's an older (15 year old Carrier) 5 ton system. I tried everything...

Minimum airflow should be maintained at every point on the face of the heater. Since an electric duct heater maintains a constant BTU output while the heater is energized, minimum air velocity...

Looks better than most I've seen. When you outside of the USA, one can walk into a local Costco or Sams type store and purchase this type of equipment off the shelf, with 50' of tubing whether you...

Just this week we suggested de-commissioning a 1958 vintage Carrier 5H60 R-12 belt drive. The building has been vacant for several years and quite naturally anything copper has been re-purposed.

J

Most of the correspondence (email etc) I am seeing is now Daikin branded....


J

Just to clear some of the above information above, which is kinda true:

The Turbocor compressor was invented in 1993 in Australia, and the Turbocor business relocated to Montreal, Canada in 1999....

Mikey, take a peek at this.

http://shop.panopticslighting.com/refrigeration-lighting.aspx

and if strings is what you want:

http://www.solidapollo.com/

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That is what I am thinking. The solutions while a pain in the a$$ may get you a usable space. Lift the unit off the curb and put 2 layers of 5/8" gypsum board wall to wall in the curb with a coating...

This is not an equipment issue as much as it is a building design issue. Architects are using lighter and lighter construction and HVAC designers, in many cases are, not able to place units away from...

It is already Daikin-McQuay. From what I am hearing the McQuay brand is being dropped entirely.

Hearing rumors from some pretty good sources that the McQuay brand will no longer exist in the US come the end of August. It will now be Daikin across the board, and I am assuming that with the...

Yes, but most all would be custom manufactured units. What CFM range are you looking for?


J

I believe the ASHRAE guidelines are 50 CFM/person for a smoking environment. As Motoguy mentions a central exhaust fan that ramps up in relation to an economizer damper position would be the way I...

Here's more from another major player:

http://www.lg-vrf.com/

J

You need to verify what the manufacturers MIN RPM is for lubrication. If I remember correctly on a hermetic it will be about 1100 RPM. I know for a fact the old Carrier 5 Line open compressors had...

The independent studies I have seen, especially from the guys at St. Jude, focus more on filtration and dilution. They do however recommend uVc for cooling coils, drain pans and for inlet side of...

Try Miren Browser (in the app store free)

J

Interesting concept. There is already an Office Suite available ( http://www.libreoffice.org ) which includes a very nice database program.

J

The comfort level and evenness of the temperature is the same. My filters have been loading more quickly which makes me wonder how much crap was getting stuck in stud space return.

J

In my area, one word, leakage. Too many joints for the puzzle fitters to properly install. If properly thought out a central return on a single story home is just as effective as a return in every...

Their website has been weird all day, growing pains,

http:www.nest.com

I found the connections at one point, now can't seem to locate.

I've had no problem with ANY of my Google services....

J

I'll give it a 10 on the coolness factor scale

http://www.engadget.com/2011/10/25/ipod-fathers-unveil-their-next-project-the-nest-learning-thermo/
...

sorry JP, I am trying to watch that.

J

They ysed to but stopped in 2000 or so. They shut down J Bay at TR-1 in Syracuse stating they were not making any money on the large tonnage machines.

J

100 gallons in what time period? If that is flow in gallons per minute, then use this formula:

Total Heat (BTU/hr) = 500 x GPM x ∆t (water)

J

There is no difference in the compressors between the DD and BD models, just the drive system. There is/was a different oil sump for the Transicold refrigeration compressors used in buses, ships etc....

You could do the duty with an Aaon 100% MUA, takes more than 12½ Tons, this is an 18 ton unit

RN-018-3-0-EB09-000 Cooling Section
Total Capacity: 210.39 MBH
Sensible Capacity: 110.55 MBH
...

If you can see the bulb, any part of the bulb, from any angle then I would say you have a problem. If it is reflected tracer light (uVc is not visible) then maybe you're OK.

J

300', WOW !!

One of the problems here is exactly how much extra charge is going to be required and what that is going to do to the compressor. In line lengths such as this the size of the liquid...

Exposure hazard is very simple. uVc is EXTREMELY hazardous to biological DNA. It will cause severe burns, massive damage to unprotected eye tissue and depending on the dosage cause squamous cell,...

We supply the recovery machines, the techs are responsible for all of their other tools. That being said, if something happens and a tech is separated from all of his tools we do not expect him to...

We have done some uVc installs on older AHU's and measured the difference in pressure drop across the cooling coils as the nasties were "cleaned" out which translates directly to BHP savings. One can...

High Pressure Drop

For Example, a 5 ton System - R410a
125°F Sat Condensing Temp - 10° sub-cooling
45°F Sat Suction Temp - 10° superheat
6 elbows
75' line length or ~85' equivalent

Properly...

I would have to question where (physically) that one would put a uVc assembly in a ductless split fan coil.

J

I had one of these system in an apartment I rented about 20 years ago. The trick is simple, the OUTPUT Btuh of the gas burner has got to match the heating load of the space (doesn't matter if it is a...

Try a post here in the Free BSD forum. BSD is the Berkley Unix developed from the original Bell Labs code.

If there is not support for this card or a newer equivalent, I would be surprised....

Dectron, Deschamps, Seresco all make pool units.

The 35BC box is not a VVT box, it is a true VAV box (6" inlet) with the old Carrier "system powered" controls.

Just my $0.025, I'd change it out to a new box with a standalone analog electronic...

Usually not a huge problem, as long as you're not planning on running them underground.

J

Hi Scott, welcome.

While I have never done any actual "testing", the area I am in has an "epidemic" of non-insulated vertical closet type furnaces installed in the attic. Just from having lived...

Yes it does. Adding a de-superheater to a refrigerant circuit is equivalent to adding 15% more condenser capacity. Desuperheating lowers refrigerant temperature and pressure, reducing energy input to...

For filters, there is no min.

Nope, no recirc there :)

Think about it this way, with a smaller furnace it will run longer and when you hit the extreme temperatures warm air circulating will always "feel" more comfortable than a unit cycling, even if the...

I was watching the local news yesterday and they did a spot showing two enterprising folks ripping off condenser coils from some fairly large rooftop units. The video from the surveillance camera...

This may work. You're going to have almost 8 gallons stored in the loop which given some time should heat up.

Once you have a feel for what the loop temperature is going to be, to figure your...

absolutely !

J