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Old 03-11-2012, 05:43 PM   #1
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air conditioner for generator mod

Here is my mod for delaying the high fan for duo therm a/c .
You can also add in another for low fan if needed
This is for start up of the a/c when running low watt gennies.
This allows the compressor to start and the fan to delay so the peak wattage isn't all at once .
This is the delay module I bought from graingers $9.00 pt number 4e233
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Old 03-11-2012, 06:00 PM   #2
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What generator are you running and what is the BTU of the AC unit?

Sounds like a nice mod.
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Old 03-11-2012, 06:12 PM   #3
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heres the pics in order.
Click image for larger version

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Old 03-11-2012, 06:14 PM   #4
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I have a 7,000 watt gennie . But it still really bogs it down upon a/c start up . now it does not . even on those hot humid midwest summer it should be night and day difference .

its a 13,500 btu duo therm
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Old 03-11-2012, 06:18 PM   #5
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Would anyone like to see a video of how the delay works ? I could do it and put it on you tube if its really necessary
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Old 03-11-2012, 07:03 PM   #6
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I seen as well but was told by grainger tech this delay is
Used on compressors . Here's the link
ICM CONTROLS Relay,Time Delay - 4E233 - Grainger Industrial Supply
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Old 03-11-2012, 07:03 PM   #7
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7K watts and shes huffin a bit on ya? Yeesh I sure hope my twin 2K Hondas are up to the task for my 13.5K unit. This will be my first year with them.
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Old 03-11-2012, 07:07 PM   #8
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I see rated fan amps at 2
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Old 03-13-2012, 12:54 PM   #9
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after talking this over with shooted weve made adjustments to this to allow it to work within limits !
I will post pics again later but what it boiled down to was the delay on the actual HI blower input was to many amps for the delay module .
so I actually took the delay put of that circuit and installed in the 12v side of the fan blower input from the thermostat .
Now The delay works both on the high side and the low side .
The compressor turns on and starts running then the fan kicks on about 5 seconds later in either the hi or low setting depending on what its set at.

to jfm-jr yes it huffs a little bit but as I stated I have a 7k gennie to which i can run fridge on 110, hw on 110 as well as a tv or two not to mention the converter running . and when the a/c kicks on it takes a load to get it the a/c and fan running .
now the load is far less substantial all at one shot .
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Old 03-19-2012, 11:48 AM   #10
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Quote:
Originally Posted by f1100turbo View Post
after talking this over with shooted weve made adjustments to this to allow it to work within limits !
I will post pics again later but what it boiled down to was the delay on the actual HI blower input was to many amps for the delay module .
so I actually took the delay put of that circuit and installed in the 12v side of the fan blower input from the thermostat .
Now The delay works both on the high side and the low side .
The compressor turns on and starts running then the fan kicks on about 5 seconds later in either the hi or low setting depending on what its set at.

to jfm-jr yes it huffs a little bit but as I stated I have a 7k gennie to which i can run fridge on 110, hw on 110 as well as a tv or two not to mention the converter running . and when the a/c kicks on it takes a load to get it the a/c and fan running .
now the load is far less substantial all at one shot .

Would like to see how this was wired ot the low votage side, do we have pics? thank you
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