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-   -   Can you use a 1.5 ductless condenser to replace a 1.5 ton standard condenser (http://www.diychatroom.com/f17/can-you-use-1-5-ductless-condenser-replace-1-5-ton-standard-condenser-178017/)

wonderworm 04-24-2013 06:51 PM

Can you use a 1.5 ductless condenser to replace a 1.5 ton standard condenser
 
Anyone know if you can use the condenser from the below mini split ductless system and hook it up to a standard split system thermostat and air handler?
http://air-conditioners.comparical.c...tioner-MTU4OTM

http://www.ajmadison.com/cgi-bin/ajmadison/KFR18GW.html

Both are 220v.

Patrick Eubanks 04-24-2013 08:15 PM

No
 
A ductless is most of the time controlled via 120 Volt signals from the inside unit.

Ebierley 04-24-2013 08:32 PM

Most mini splits also meter at the outdoor unit and are designed to work wit a specific indoor coil and fan.

HVAC1000 04-24-2013 10:53 PM

no the communication systems are not compatible. why cant you buy a standard split condenser?

wonderworm 04-25-2013 10:28 AM

These are the possibilities I am thinking of.

1. Remove any smart wiring and take it down to just a fan, compressor, and contactor and then connect it to the air handler just like a standard 1.5 ton split condenser.

or

2. Just part out the compressor from it and use it to replace a failed compressor on the existing 1.5 ton condenser.

Marty S. 04-25-2013 12:25 PM

Just buy the right compessor

Ebierley 04-25-2013 07:05 PM

Quote:

Originally Posted by wonderworm (Post 1166943)
These are the possibilities I am thinking of.

1. Remove any smart wiring and take it down to just a fan, compressor, and contactor and then connect it to the air handler just like a standard 1.5 ton split condenser.

or

2. Just part out the compressor from it and use it to replace a failed compressor on the existing 1.5 ton condenser.

It won't work. Compressors are sized by e amount of refrigerant they pump. Mini splits work with very small charges relative to conventional systems so the compressors can't pump the refer needed for a conventional split system.

Doc Holliday 04-25-2013 10:16 PM

Quote:

Originally Posted by Ebierley (Post 1167281)
It won't work. Compressors are sized by e amount of refrigerant they pump. Mini splits work with very small charges relative to conventional systems so the compressors can't pump the refer needed for a conventional split system.

I was thinking more along the lines of it may work, installing a mini split compressor into a regular residential condenser, as I would have to think 1.5 tons means 1.5 tons.

but this is new to me so I'm simply guessing here on a great topic, one I've never encountered before. are the compressors the same?

HVAC1000 04-25-2013 11:11 PM

ya and a AAA battery is a AAA battery, but that doesnt mean cutting a AA battery in half and pairing it with a full AA is the same thing as a AAA.
Why can't you buy the right compressor?

Doc Holliday 04-25-2013 11:52 PM

well, that's the question at hand. Is a 1.5 ton mini split compressor able to handle the same btu's as a 1.5 ton residential compressor? This is a question I've never thought of before but am wanting to know. is it the same Copeland scroll? is 1.5 tons the same from one to the other? Anyone?

good topic.

HVAC1000 04-26-2013 12:26 AM

well most minisplts have a rotary vain compressor not a scroll. as for working, i think if you somehow got it all wired right and brazed together it would work and circulate the refrigerant but i dont think it would work at the same capacity and remove as much heat. the mini split compressor is designed to be 1.5 ton, but that is when it is used with the equipment it is installed on. using with other equipment would not work at the same tonnage

Doc Holliday 04-26-2013 12:38 AM

that's what I don't get. why is a 1.5 ton mini split compressor not compatible to a 1.5 ton residential/copeland scroll 1.5 ton compressor? why is 1.5 tons not the same as 1.5 tons?

explain.

Doc Holliday 04-26-2013 12:45 AM

you're not comparing apples to apples when talking about rotary vain/piston to scroll. regardless how they run, they achieve the same tonnage so why is a mini split's compressor not allowed to be the same as a "normal' residential's compressor?

I can put a rotolock (ingersoll rand/trane) in place of a scroll and vice versa from one to the other but what is the difference from mini split compressor to roto lock or scroll as we know it? only deficiency I see is the coil it serves.

Doc Holliday 04-26-2013 12:48 AM

1.5 ton rotoloc is the exact same as a 1.5 ton scroll. it pumps the exact same amount of refrigerant so what I'm left thinking is the coil of the 1.5 mini split condenser not equaling the coil (size) of a 1.5 ton regular condenser although even then I doubt it would be of any significance.

this is an experiment in the making.

Doc Holliday 04-26-2013 12:53 AM

Quote:

Originally Posted by Ebierley (Post 1167281)
It won't work. Compressors are sized by e amount of refrigerant they pump. Mini splits work with very small charges relative to conventional systems so the compressors can't pump the refer needed for a conventional split system.

who says? do you have any data you can post to back this up? he did say the mini split compressor ran off of 220 volts, same as a regular condenser/compressor? I'd be willing to bet they can more than adequately pump the refrigerant as it's not the amount they can pump, but the condenser coil size and how much it can condense.

Please post data. I'm ignorant to this cause, just debating but beware, we may get shut down for doing so. :wink:


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