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#111530 - 12/27/06 02:05 PM HVAC -or is it HACK?  
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
The following pic shows the power and control of the HVAC in a commercial establishment.

The cord & plug supplies a flying tangle of wire nuts; these supply a furnace, swamp cooler, and line voltage thermostat.

[Linked Image]

2017 / 2014 NEC & Related Books and Study Guides

#111531 - 12/27/06 09:38 PM Re: HVAC -or is it HACK?  
HotLine1  Offline

Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
This northern city guy needs to know what a 'swamp cooler' is??

Even not knowing, it can't be wired even close to right!


#111532 - 12/27/06 09:51 PM Re: HVAC -or is it HACK?  
renosteinke  Offline
Cat Servant
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
A swamp cooler is used in dry areas for cooling. It has three main elements: a fan, a pump, and a screen. The fan blows dry air through the screen, while the pump keeps the screen wet. The water, as it evaporates, cools the air quite a bit.

How much it can cool the air depends entirely upon the relative humidity of the air. In that respect, a swamp cooler installation is different from air conditioning ... you need to have a constant flow of fresh air through the house. No closed windows here!

A swamp cooler typically will only draw a few amps.

#111533 - 12/29/06 07:40 AM Re: HVAC -or is it HACK?  
electure  Offline

Joined: Dec 2000
Posts: 4,262
Fullerton, CA USA

#111534 - 12/29/06 09:30 AM Re: HVAC -or is it HACK?  
ITO  Offline
Joined: Nov 2006
Posts: 348
Swamp coolers work great in West Texas where it is dry.

They dont work at all in Central Texas.

Its all about the Humidity,

101° Rx = + /_\

#111535 - 12/29/06 10:11 AM Re: HVAC -or is it HACK?  
johno12345  Offline
Joined: Sep 2005
Posts: 96
United Kingdom
We had an evaporative cooler in an office at work once. They had all the doors and windows open. It set the fire alarm off. When the Fire Brigade turned up, we went into the room and it was somewhat like a sauna, everything was wet, the ceiling, the fire detector. The Fire Brigade were quite bemused and slightly miffed. It lasted a few months in a larger office before it started producing an awful stench so it went in the bin.

I think it is too humid for them over here.

We got inverter A/C and I dont know how we ever coped before.

I took my time, I hurried up, The choice was mine, I didn't think enough

#111536 - 12/29/06 09:20 PM Re: HVAC -or is it HACK?  
HotLine1  Offline

Joined: Apr 2002
Posts: 6,872
Brick, NJ USA
Thank you, but that's not a 'Jersey thing'. We have to remove humidity; not add it.

Happy & Safe New Year to all.



#111537 - 12/30/06 12:13 PM Re: HVAC -or is it HACK?  
Lostazhell  Offline
Joined: Feb 2004
Posts: 1,431
Bakersfield, CA (Originally Or...
My father-in-laws prehistoric house has one of these swamp things stuck into the side of it, with the squirrel cage blowing straight into the living room... He had it just plugged into an extension cord, which plugged into an old floor outlet, until I showed him the extension cord was melting [Linked Image] I hardwired a circuit in and fed a swamp control with 12/4 MC into the living room.

Amusingly, one day I went by there and turned it on to cool the house down, and this thing started blowing bubbles into the living room [Linked Image] [Linked Image] It did that for about a month and hasn't ever since

#111538 - 12/31/06 10:52 AM Re: HVAC -or is it HACK?  
Trumpy  Offline

Joined: Jul 2002
Posts: 8,223
SI,New Zealand
Swamp Cooler is another name for an Evaporative cooler.
I remember working on them as an EC, you had to have a mask on while draining the water out.
Legionnaires disease is rife in any Evap cooler that is not well maintained, not to mention mosquitos laying eggs in them.
There was a local McDonalds was shut down because of a problem with an Evap unit here, water was like sludge when we cleaned it out.
It was in the Kiddie castle thingee.
One other reason why I won't eat there. [Linked Image]

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