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Old 11-13-2008, 08:28 AM   #31
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New Cased Coil - Install to Furnace - PICTURES!!


I think it looks good for my first install of a furnace. I do have a lot of experience with HVAC but its on automobiles.

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Old 11-13-2008, 10:25 AM   #32
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Originally Posted by hartkem View Post
I think it looks good for my first install of a furnace. I do have a lot of experience with HVAC but its on automobiles.

Ok, look, I'm not trying to bust your efforts, but those cinder blocs are going to transmit noise and probably wear a hole in your drain pan.

The sheet metal has to be 26 gauge minimum. You should have that furnace SUSPENDED from the roof with threaded rod connected a length of squared metal stock. If you really want a quiet install add another piece of square metal stock and have it sitting on thick springs.
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Old 11-13-2008, 03:38 PM   #33
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I can't tell for sure but it looks like the drip leg is b4 the gas cock. If so move it to the outlet side of the gas cock. Like hvaclover said 26g min. Also don't forget to insulate. Just remenber if you are going to insulate the inside of the duct you are going to lose 2in on the width and length. Be sure to compensate for a larger supply and return by 2in. Also make sure you put canvas connectors on the suply and return. If you chose to leave the blocks in place (not recomended)(see hvaclover's recomendation)at least put isolation pads between the block and furnace.
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Old 11-13-2008, 04:15 PM   #34
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Sorry I couldn't reply to your message says I need 20 posts. But I know what you mean
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Old 11-15-2008, 05:49 PM   #35
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I understand you are concerned about the cinder blocks making noise but what you can't see is that the drain pan is sitting on top of a 3/4 in piece of plywood which is sitting on top a 2 inch thick piece of foam insulation to dampen the noise. I also put 1/4 thick isolation pads on top of the cinder blocks between the blocks and the furnace.
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Old 11-15-2008, 06:28 PM   #36
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Originally Posted by hartkem View Post
I understand you are concerned about the cinder blocks making noise but what you can't see is that the drain pan is sitting on top of a 3/4 in piece of plywood which is sitting on top a 2 inch thick piece of foam insulation to dampen the noise. I also put 1/4 thick isolation pads on top of the cinder blocks between the blocks and the furnace.


Is there a reason why you need the furnace raised so high? Normally, one would use pressure treated wood in the pan (4x4 or two 2x4's nailed together) with isolator pads between the furnace and wood. In your case, I would cut them the entire length of the furnace and coil and run them parallel to the unit. I would then use 8 isolator pads. Put a pad at each corner of the furnace and at each corner of the coil.

For added stability, you can use 3 pieces of wood.

1. 4x4 cut the entire length of the furnace and coil
2. 4x4 cut the length of the furnace
3. 4x4 cut the length of the coil

Piece number one is used as the back support. You will then stagger piece two and three as the front support. The only reason you do this is because the furnace is deeper than the coil.

Last edited by bluefitness; 11-15-2008 at 06:36 PM.
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Old 11-15-2008, 07:09 PM   #37
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When you move the drip leg after the shut off valve, connect your flex line to the top of the drip leg.

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Old 11-15-2008, 09:06 PM   #38
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Thanks for showing me how to hook up the drip leg.


The install manual says the furnace needs to be off the ground a minimum of 6 inches. This is because the trap for the condensate drain must be moved from inside the furnace to the bottom when used in a horizontal configuration
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Old 11-16-2008, 08:48 AM   #39
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Originally Posted by hartkem View Post
Thanks for showing me how to hook up the drip leg.


The install manual says the furnace needs to be off the ground a minimum of 6 inches. This is because the trap for the condensate drain must be moved from inside the furnace to the bottom when used in a horizontal configuration
I would still take the blocks out. It will wear a hole through the pan. There are a lot of ways to get that clearance. I think a few people have mentioned it.
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Old 11-18-2008, 02:45 AM   #40
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ok i give up what the hell is that

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