Let me start off by saying I know doing this is to the a/c is so wrong. It's one
of those shake
your head and walk away laughing kind of things to me.
But in a few months almost the whole house will be gutted including the hvac.
Everything will be
scrapped then including both condensers. I just want a little a/c until then
I should mention that I do hvac for a living. It's my house and and the reason
for the over sized
condenser is it's only temporary, free, works and is just some old 5 ton
taking up space anyway.
A tractor smashed the crap out of my existing 3 ton condensing unit.
The condensing unit going in is 58,000 btu (builder grade)
My hvac is a older 3 ton gas/electric split system. (builder grade)
It will get hot here (Chino, california) 100f degree
I do not care about the efficency
I do not care about the performance
I do not care about the energy
I have no experience dealing with missmatched equipment problems
like this and was wondering if the existing evaporator section and low
refigerent charge will be enough for it to actually run without failing??
I do not care about your efficiency
I do not care about your performance
I do not care about the energy
I do not care if it works
I do not care if it fails
Perform you own experiment, write down every single detail and do NOT
report back to us.
If you get it to work even a little, it wont run for long with poor oil
return, low suction, over heated compressor, iced coil. Of course, you could
put a hot gas bypass on it and a cooling type TXV for the compressor, or
size a cap tube to allow enough gas bypass from the liquid line to cool the
compressor. Or, you can put an EPR on the unit to stop icing and use an oil
separator to get the oil back to the compressor, in which case you need to
cool the compressor once again.
Hmmmm, I guess the answer is ,,, what the heck, you guess what the answer
Oh, BTW, 400 cfm per ton, you have three tons x 400= 1200cfm. 5 tons 00
cfms. Whats your guess as to what will happen when you have 800 cfms less?
I once ran into a situation where someone put a 3-ton condenser on a
Of course the compressor was burt out.
To add to the problem the evaporator and blower wheel were both loaded
There are various ways you can downsize the condenser and make it work okay.
A 5-ton condenser on a 3-ton system, you will soon have a horrible mess
to clean up.
Get a used window/room jammer. Here is what a little half-ton can do in
104-F Heat Index!
I will bet that the 3-ton system was oversized for Chino in LA, CA.
Summer Outdoor Design Conditions 89-dry bulb, 70-wetr bulb, 39% RH.
Have a manual J done before you install a new system! - udarrell
WISDOM PRINCIPLE DIRECTED EMPOWERMENT COMMUNICATIONS -
THE REAL POLITICAL ISSUES and WISDOM BASED PEOPLE EMPOWERMENT
You should probably humor yourself then with some of the Trane factory
approved match ups. You might be suprised how wrong you can be
although the OP will certainly have quite a mess with what he seems to
From my prospective the tractor side swiping my equipment and dragging
away already caused the mess. I am just doing damage control.
I could be a jerk and just laugh and walk away because in a few months
that place will be torn down anyway. But sometimes without a/c at midnight
i t's still a oven and i'm not a jerk.
Oh BTW: "proposing"?
I was only looking for opinions about the least bad size metering device
because I do not know off the top of my head.
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