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#111530 12/27/06 01:05 PM
Joined: Jan 2005
Posts: 5,370
Likes: 1
Cat Servant
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]

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#111531 12/27/06 08:38 PM
Joined: Apr 2002
Posts: 7,333
Likes: 7
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 08:51 PM
Joined: Jan 2005
Posts: 5,370
Likes: 1
Cat Servant
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 06:40 AM
Joined: Dec 2000
Posts: 4,291

#111534 12/29/06 08:30 AM
Joined: Nov 2006
Posts: 348
ITO Offline
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 09:11 AM
Joined: Sep 2005
Posts: 97
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 08:20 PM
Joined: Apr 2002
Posts: 7,333
Likes: 7
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 11:13 AM
Joined: Feb 2004
Posts: 1,438
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 09:52 AM
Joined: Jul 2002
Posts: 8,432
Likes: 3
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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