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Old 14-03-2018, 08:27   #1
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house central AC compressor and a coil for boat ac

currently have 3 marine ac units seem to use a lot of amps to run them and trip breakers often, boat is 70 motor sailor 1200 +- square feet


is it possible and how to use a house compressor on radar arch, and a central A coil, or possibly zone to 3 current zoned units
I have seen some ac units on radar arches wondering if better way to go?
thinking this would use less power and be more efficient?
any input from those who cool this way
pros and cons pleas
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Old 14-03-2018, 08:55   #2
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Re: house central AC compressor and a coil for boat ac

Do you have 240 volts ac avaliable?
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Old 14-03-2018, 09:02   #3
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Re: house central AC compressor and a coil for boat ac

yes have 220
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Old 14-03-2018, 09:24   #4
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Re: house central AC compressor and a coil for boat ac

A 3 ton condenser from trane or carrier will need a 30 amp circuit and about 24 amps to run. It weights about 250 pounds an is made of painted mild steel. It will not enjoy the salt air environment. Plus you need the A coil and a big fan to move the airflow.

Really it's not a great idea.

BUT.... Dankin does make a 3 ton marine ac unit with water condenser.

Plus they have multi zone systems called multi-split. You might be able to put one together using dankin units and multiple bulkhead mounted fan units.
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Old 14-03-2018, 09:37   #5
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Re: house central AC compressor and a coil for boat ac

i have a extra trane condenser and A coil
the top of radar arch is about 18 feet in height so not to much spray would get up there. and weight would not be a problem.
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Old 14-03-2018, 09:45   #6
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Re: house central AC compressor and a coil for boat ac

Why don't you call Flagship Marine they make some very well built stainless air cooled units that may work for you.
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Old 14-03-2018, 09:48   #7
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Re: house central AC compressor and a coil for boat ac

Ductless mini split????

They run smooth and quiet off 12v variable speed compressors and are up to 30 seer.



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Old 14-03-2018, 13:54   #8
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Re: house central AC compressor and a coil for boat ac

Yes they work on boats but are considered throwaways by the commercial operators. Plus you have Freon Lines running through out the boat.
I would look to see why you are tripping breakers , make sure all connections are clean and tight and that you have adequate water flow. This is because as the high pressure goes up on the compressor which is usually caused by low water flow, the compressor draws more amperage possibly causing your breaker tripping.
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Old 14-03-2018, 14:24   #9
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Re: house central AC compressor and a coil for boat ac

Quote:
Originally Posted by VBsail View Post
Ductless mini split????

They run smooth and quiet off 12v variable speed compressors and are up to 30 seer.



Came here to say this.

Ive seen traditional household units run on commercial boats and no they don't hold up long but seems like they hold up long enough to make it worthwhile.
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Old 15-03-2018, 08:06   #10
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Re: house central AC compressor and a coil for boat ac

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Originally Posted by VBsail View Post
Ductless mini split????

They run smooth and quiet off 12v variable speed compressors and are up to 30 seer.



Are you saying that you by-pass the AC wiring and go direct to your 12V source?
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Old 15-03-2018, 09:52   #11
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Re: house central AC compressor and a coil for boat ac

Quote:
Originally Posted by sailorchic34 View Post
A 3 ton condenser from trane or carrier will need a 30 amp circuit and about 24 amps to run. It weights about 250 pounds an is made of painted mild steel. It will not enjoy the salt air environment. Plus you need the A coil and a big fan to move the airflow.

Really it's not a great idea.

BUT.... Dankin does make a 3 ton marine ac unit with water condenser.

Plus they have multi zone systems called multi-split. You might be able to put one together using dankin units and multiple bulkhead mounted fan units.
Everyone tries to reinvent the wheel.
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Old 15-03-2018, 10:54   #12
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Re: house central AC compressor and a coil for boat ac

Call Ocean Breeze in Stuart, Fl. and talk to Joe (owner). They can make just about anything you want.
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Old 15-03-2018, 11:45   #13
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Re: house central AC compressor and a coil for boat ac

Quote:
Originally Posted by freedom12 View Post
currently have 3 marine ac units seem to use a lot of amps to run them and trip breakers often, boat is 70 motor sailor 1200 +- square feet
Marine A/C units generally use less power for the same amount of cold, compared to house ones.

Quote:
is it possible and how to use a house compressor on radar arch, and a central A coil, or possibly zone to 3 current zoned units
Why would you want to do that? Are you trying to save money? Or use parts you have lying around?

Quote:
I have seen some ac units on radar arches wondering if better way to go?
thinking this would use less power and be more efficient?
any input from those who cool this way
pros and cons pleas

Larger
Noisier
Requires more ductwork which uses up space
Will use more power
Not made of marine grade components

Pros: probably cheaper, doesn't require a water loop.
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Old 15-03-2018, 11:49   #14
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Re: house central AC compressor and a coil for boat ac

If you have hydronic heating, I think chilled water system is the best system. It's common on ships. Your compressor unit is in the engine room or any convenient space. No noisy units on deck. It's water cooled so much more efficient than air cooled in hot climates. If you have heaters like mine that are marine versions of a car heater, the same water lines can be used instead of freon lines run to units. Instead of going thru the boiler, the water is diverted to the chilled water unit.
Self-Contained Water Cooled - Flagship Marine
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Old 15-03-2018, 12:41   #15
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Re: house central AC compressor and a coil for boat ac

It takes smaller air handlers to put out the same amount of BTU's as for cooling. They may not be big enough.
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