need opinion on new changeout.

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08-19-2012, 10:08 AM
gesellman

need opinion on new changeout.

I recently installed a new system at my fathers house in Florida. Its working good but Im not sure if I got it at its maximum efficiency.
I installed an AEPF30361BA variable speed air handler with a GSX13O36 condenser. R410a. The air handler is an 06, but I changed out the evap for a 410a direct replacement from Goodman since the old one was r-22 only.

I have set the blower speed dip switches for 3.5 ton blower speed with minus 15% trim.

Piston size .070 (Came with condenser)

Outdoor ambient: 88f
indoor 78f
furthest supply 53f
sh 5.4
sc 9.9
press 140.3 / 363.9

any suggestions welcome.
08-19-2012, 10:20 AM
jimj

Whats your IDWB temp?
08-19-2012, 10:58 AM
gesellman

I am sorry, I dont have a a tool to check for wet bulb...
08-19-2012, 11:13 AM
jimj

OK. How about Relative Humidity?
08-19-2012, 11:43 AM
gesellman

Its 82% outside as per google for this area. But I cant measure it inside either. Any way I can make a wetbulb thermometer myself? I heard a regular thermometer wrapped with wet cotton in the retunr box.
08-19-2012, 11:47 AM
just_opinion

Quote:

Originally Posted by gesellman

I recently installed a new system at my fathers house in Florida. Its working good but Im not sure if I got it at its maximum efficiency.
I installed an AEPF30361BA variable speed air handler with a GSX13O36 condenser. R410a. The air handler is an 06, but I changed out the evap for a 410a direct replacement from Goodman since the old one was r-22 only.

I have set the blower speed dip switches for 3.5 ton blower speed with minus 15% trim.

Piston size .070 (Came with condenser)

Outdoor ambient: 88f
indoor 78f
furthest supply 53f
sh 5.4
sc 9.9
press 140.3 / 363.9

any suggestions welcome.

Is that a 25 degrees DT?
It is your DAD. Put a TXV.

Quote:

Originally Posted by gesellman

I am sorry, I dont have a a tool to check for wet bulb...

You have a thermometer. Now you need is the clean white shoe string. Insert the thermometer into the shoe string. Wet it. Leave it on the table and watch the temp rise until it stops. (the pint when it goes up & down. NOW you got wet bulb.

Again --- It is your DAD. Put a TXV.
08-19-2012, 03:28 PM
gravity

any variable speed should have a TXV
08-19-2012, 05:25 PM
Saturatedpsi

With the ID and OD temp values, I'd estimate the target superheat between 15˚ and 20˚. Saturated temps look good, so you only need to remove a little refrigerant to adjust the superheat up a bit.