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What does it do to upsize an indoor evap coil.
Example: 3 Ton condenser
4 Ton Evap coil
Does this increase the Seer rating?
Do you have to change the orifice size?
Thanks.
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Originally posted by vapor_rush
What does it do to upsize an indoor evap coil.
Example: 3 Ton condenser
4 Ton Evap coil
Does this increase the Seer rating?
In many cases yes, many higher SEER units have a larger indoor coil, provided the manufacturer lists the coil/outdoor unit as a match.
Do you have to change the orifice size?
Yes, if it has a fixed orifice metering device it must be sized to the outdoor unit
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1st, you need to look into that particular piece of equipments spec book to see if its matched.
I know on my personal system I have a 2 ton heat pump w/ a 3 ton coil because I can get around 15 1/4 SEER from it.
How tall are you Private???!!!!
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Increased SEER, decreased latent capacity meaning higher humidity. Not something to do in a humid climate though many manufacturers do it rather than use a TXV on "normal" sized coil.
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There have been many discussions about the pro's and con's of over and undersizing coils. Try the search feature above for hours of reading.
There is nothing more frightful than ignorance in action....Mark Twain
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Oversized indoor coil
BaldLoonie. So per the example
if I went with the 4 ton coil
with a 3 ton condenser with
a txv will this give a substantially
higher seer with out loosing
to much latent capacity?
When I first got into this trade
the guy I worked for did this
a lot. Minus the txv.He did not
no why he would go a half to one
ton over size on the indoor coil
just that thats what his dad
taught him to do.And they never
had any problems.He would use
a txv only if the whole system
scared him.Retro fit job big
house lousy ducting and it
had "alot of glass you know"
and with the hot afternoon sun
and all! I learned a lot from this
guy NOT because he was very good
OR knowledgeable.Bot because
he would take me to a job and
say "this is what I was thinking"
but do what you want to.Get
what you need from the supply
house.Then thereI would be
in front of the customer.....
Put a lot of pressure on me.
But I have a strong need to not
only be right.But right the first
time.That and I just hve to do
right by the customer.
41Gasman
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We oversize just a half of a ton I haven't looked into it but I was told that it wasn't good to oversize a hole ton but sometimes we do.This would be a good question for NormChris.
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Lennox 36HC coil /w/txv on Lennox Horizontal Gas Furnace with American Standard 12.0 S.E.E.R. CONDENSER
I drop my electric bill in summer 65.00 a month from
10.0 s.e.e.r lennox 36acb change -out 2003
'Life begins with the journey each day'
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Something else to keep in mind is to make sure you have a sufficient size blower in that furnace or else coil will freeze
## + years in the field never made you a know-it-all This industry is far more diverse than you are
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