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jfls49 12-08-2012 03:16 PM

Ideas for anchoring condensor unit
 
3 Attachment(s)
I'm noticing the condensor unit is tippy and might need some anchoring down. We get occasional heavy winds and I'm not comfortable leaving it as is. I'm afraid it is going to rock back and forth, maybe even fall off a leg if the wind gets blowing hard enough. For sure it can't be good for it.

The pad is an E Lite Equipment pad and made of plastic, and hollow underneath. Not very solid for this application if you ask me.

A couple of ideas i'm kicking around is to support the unit with some wood, pull the pad out and slide a 24 x 24 concrete paver back under it with liquid nails applied to all surfaces. the other idea is to replace it with some pressure treated wood 6 x6 and 4x4.

I'm open to any suggestions how I can anchor this down better?

PS, Yes the lineset is already brazed in place, I realize I have to keep the heat pump unit at the same height.

Thanks in advance...

joecaption 12-08-2012 03:28 PM

May be tippy because the pad under it is not level and it sure looks like there was not enough fill around it to keep it from washing out.

sublime2 12-08-2012 03:34 PM

1 Attachment(s)
Get a roll of this,
Attachment 61672
And secure it to the wall.

joecaption 12-08-2012 03:41 PM

Go back and add your location to your profile.

It was installed to close to the house. Should have been out behind the drip ole of the roof.

hvac benny 12-08-2012 05:06 PM

Those pads are alright for flat surfaces, but I always preferred to poor a concrete pad if there was any slope at all. Most hvac contractors won't go to the trouble, though, as you need to form and poor the concrete a few days before setting the unit down on it, and can't drill into it for 7 days (if my memory serves me). I don't think those pads will stand up to being drilled into for anchors. I think it would take a hell of a wind to blow the unit over, although those columns you have under it change its centre of gravity.

jfls49 12-08-2012 05:46 PM

I doublechecked to see what is under it, stuck my fingers under that corner where there isn't much dirt. Its hollow and feels like plastic.

This pad appears to be some kind of plastic decorative cover that sets over a poured concrete pad.

Quote:

Originally Posted by hvac benny (Post 1069087)
Those pads are alright for flat surfaces, but I always preferred to poor a concrete pad if there was any slope at all. Most hvac contractors won't go to the trouble, though, as you need to form and poor the concrete a few days before setting the unit down on it, and can't drill into it for 7 days (if my memory serves me). I don't think those pads will stand up to being drilled into for anchors. I think it would take a hell of a wind to blow the unit over, although those columns you have under it change its centre of gravity.


jfls49 12-08-2012 06:09 PM

It was moved out about 18" from the wall. The picture makes it look alot closer.

Quote:

Originally Posted by joecaption (Post 1069044)
Go back and add your location to your profile.

It was installed to close to the house. Should have been out behind the drip ole of the roof.


Doc Holliday 12-08-2012 06:15 PM

You can't anchor to a plastic pad, not to mention anchoring is not going to solve the ground shifting. You need concrete or you need to level the ground under the unit, pack it down.

jfls49 12-08-2012 06:22 PM

Can you elaborate? Do I wrap it around the top of the unit securing it at two places to the wall? Would you drill new holes or existing screws that hold the unit together?

Quote:

Originally Posted by sublime2 (Post 1069036)
Get a roll of this,
Attachment 61672
And secure it to the wall.


jfls49 12-08-2012 06:24 PM

Supporting the unit and sliding a concrete paver in there while it is in operation is going to be the hardest part.

Quote:

Originally Posted by Doc Holliday (Post 1069121)
You can't anchor to a plastic pad, not to mention anchoring is not going to solve the ground shifting. You need concrete or you need to level the ground under the unit, pack it down.


Fairview 12-08-2012 07:30 PM

Level the pad and mud jack until all the cavity underneath the plastic is full.

jfls49 12-08-2012 07:34 PM

Mud Jacking?

Whats wrong with using one of these?


http://www.homedepot.com/catalog/pro...53433c_300.jpg



Quote:

Originally Posted by Fairview (Post 1069151)
Level the pad and mud jack until all the cavity underneath the plastic is full.


COLDIRON 12-09-2012 06:31 AM

Jack the unit up remove the pad, go to a Stone/Masonry yard and pick up a precast pad and a couple bags of stone, put stone down and level, position new pad over stone and lower unit down on new pad, no need to anchor unit. Not a easy thing to do dealing with all that bulk weight.
Be careful of them refrigerant lines and wiring.

sublime2 12-09-2012 07:06 AM

Quote:

Originally Posted by jfls49 (Post 1069125)
Can you elaborate? Do I wrap it around the top of the unit securing it at two places to the wall? Would you drill new holes or existing screws that hold the unit together?

Your concern is to secure the unit from rocking/ moving in high winds.
Run the strap,maybe 2 straps around top and bottom of the unit and secure to the wall with some tapcon screws.
Ever need to service unit,remove screws and your good to go.

COLDIRON 12-09-2012 08:01 AM

Don't use that strapping it looks like crap, you wouldn't like the look and you will have to drill into your house. Have never seen anything like that in the field. If you really think you have to anchor it down you can go right through the inside of the unit down through the 4 legs into the concrete pad after the pad is changed and the unit is back level and in place. You really shouldn't have to anchor it.


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