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#201295 - 05/26/11 10:44 AM how to by pass??
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
I am working with a portable AC unit that needs to keep a small computer room cool.
If the power goes out to the building the AC will shutoff and won't comeback ON automatically.

My question is: can i bypass (jumper) the main ON/OFF switch so once the power turns back ON the AC will do as well.

Or is there a better solution?

The cost of a single central AC just for that room is way too expensive for this small start up company.
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#201297 - 05/26/11 12:33 PM Re: how to by pass?? [Re: Niko]
LarryC Offline
Member

Registered: 07/05/04
Posts: 775
Loc: Winchester, NH, US
Is the on/off switch a momentary switch? If not, then leaving the switch in the on position should restart the unit when power returns.

Aside from the technical issues, do you really want to modify the equipment? I would think the LIABILITY INSURANCE would be rather significant if something did not go well.

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#201298 - 05/26/11 02:33 PM Re: how to by pass?? [Re: LarryC]
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
Originally Posted By: LarryC
Is the on/off switch a momentary switch? If not, then leaving the switch in the on position should restart the unit when power returns.

Aside from the technical issues, do you really want to modify the equipment? I would think the LIABILITY INSURANCE would be rather significant if something did not go well.


The switch is a momentary.
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#201299 - 05/26/11 04:45 PM Re: how to by pass?? [Re: Niko]
LarryC Offline
Member

Registered: 07/05/04
Posts: 775
Loc: Winchester, NH, US
Contact the manufacturer. There may be some sort of user menu where you can set the machine to start up after a restoration of power. The same idea but different application, as the sleep timer on a TV set.

Can the A/C be connected to a home automation system? If so, perhaps the connection point allows remote operation.

Does the A/C unit use a remote control? Perhaps the remote could be hacked?

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#201300 - 05/26/11 06:37 PM Re: how to by pass?? [Re: Niko]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
I think Larry's first response is the only real answer for you. See what the manufacturer says. You really want to be using the approved solution. I am sure you can jumper something out to make it go but that might be outside the scope of your insurance.
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#201302 - 05/26/11 09:06 PM Re: how to by pass?? [Re: Niko]
mbhydro Offline
Member

Registered: 02/21/03
Posts: 340
Loc: Winnipeg MB Canada
Small UPS depending on how long the power is going to be off?

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#201303 - 05/26/11 10:22 PM Re: how to by pass?? [Re: Niko]
jdevlin Offline
Member

Registered: 08/07/02
Posts: 402
Loc: welland ontario canada
Actually being a AC it need a large UPS.
Contact the manufacturer and see if they make an 'auto restart' kit.

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#201304 - 05/27/11 12:48 AM Re: how to by pass?? [Re: Niko]
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
I contacted the manufacturer they could not help me. The unit doesn't have an auto ON function. I think i will push them to go to a small central AC unit just for that room.

Too bad the building owner doesn't allow a wall mounted unit.

Thank you all for your replies.
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#201309 - 05/27/11 06:07 AM Re: how to by pass?? [Re: Niko]
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5300
Loc: Blue Collar Country
Are you samiliar with what is called a 'mini-split' system?

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#201310 - 05/27/11 10:44 AM Re: how to by pass?? [Re: Niko]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6786
Loc: Brick, NJ USA
Niko:
You said a 'small computer room'?

Is that room a 'IT' classified room? (Article 645)

I suggest that you check into that Article. As you said a 'small start-up' company, but your building dept may have issues with that 'room'.

It all depnds on what it is 'called' and by whom.

A seperate system works in an 'IT' room by Art 645, but there qre other requirements.
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John

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