coleman coil

**lioni hvac** · 08-13-2011, 07:05 PM

help?? Just installed new coleman 2 ton 410a a/c with horizontal coil with txv with a 60,000 btu 80 % heater in attic. Only half of coil getting cold. Can not get subcooling or a good split. I changed txv 2 times. Also replaced freon 3 times. no change???

**MM#7** · 08-13-2011, 07:09 PM

Originally Posted by lioni hvac

help?? Just installed new coleman 2 ton 410a a/c with horizontal coil with txv with a 60,000 btu 80 % heater in attic. Only half of coil getting cold. Can not get subcooling or a good split. I changed txv 2 times. Also replaced freon 3 times. no change???

curious, coming off the furnace, do you have a nice transition duct the longer the transition duct the better,

so it spreads out the airflow so it catches the whole coil?

**lioni hvac** · 08-13-2011, 07:11 PM

coil is on furnace

**lioni hvac** · 08-13-2011, 07:15 PM

I did the same system last week it works fine.

**MM#7** · 08-13-2011, 07:17 PM

Originally Posted by lioni hvac

coil is on furnace

yeah i got that, but the coil is horizontal, correct? which means its lying on its side, did the other coil have a a-coil or a horizontal coil. what was wrong with the old coil? was this a easy swap, or did you modify the duct coming off furnace! how much space is from the furnace top to the horizontal coil.1 ft. or is the coil jammed up against the furnace and did you just fill in the gaps with tape/metal, trying too get a mental picture here!

**MM#7** · 08-13-2011, 07:18 PM

Originally Posted by lioni hvac

I did the same system last week it works fine.

ok maybe one of the pros has a suggestion, good luck!

**lioni hvac** · 08-13-2011, 07:22 PM

case coil system laying on its side a coil

**MM#7** · 08-13-2011, 07:30 PM

Originally Posted by lioni hvac

case coil system laying on its side a coil

how long have you been doing this type of work, do you have a co. or work for some one?

**lioni hvac** · 08-13-2011, 07:33 PM

company 15 years first time this happen to me and my friends

**Keith73** · 08-13-2011, 07:35 PM

Reuse lineset? Purge lineset? Evacuation to what micron level? Feed tubes freezing one side only? What is the superheat and subcool values? Airflow measured?

More information and maybe a few pics may help.

**lioni hvac** · 08-13-2011, 07:49 PM

Yes reuse lineset, yes purge linset, Evacuation good. I pulled blower motor wire and ran a/c All feed tubes froze. Subcooling 3, airflow good my spilt is 10

**lioni hvac** · 08-13-2011, 07:52 PM

Also feed tubes does not freeze with system not running.

**gregp** · 08-13-2011, 10:51 PM

Originally Posted by lioni hvac

Yes reuse lineset, yes purge linset, Evacuation good. I pulled blower motor wire and ran a/c All feed tubes froze. Subcooling 3, airflow good my spilt is 10

readings correct? You only have 3 degree subcool?

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