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Old 08-23-2020, 09:38 PM   #16
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Re: Heat Pump on Deck


RHVAC from Elite software. Does residential and light commercial. Definitely a poor mans Wrightsoft. Plug and play, easy to use with a little bit of practice. I've used it for grow facilities here up to 100 tons. Limited on commercial wall/roof sections in the library but it's really easy to design your own section and set a U value to it. I think they have a demo version on their website to play with.
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Old 08-24-2020, 05:24 AM   #17
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Re: Heat Pump on Deck


You'll need a min or 3" above drain pan, probably more like 6" depending on your normal snow accumulation level.


If the unit isn't raised above the pan, it will be just like setting it on the ground. within a few years, the cross over bends will begin to crush from ice build up. And you'll be closer to 9 to 10 SEER efficiency in cooling mode, and lower your heating COP and HSPF.
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Old 08-24-2020, 05:49 AM   #18
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Re: Heat Pump on Deck


Hi -

Thanks all.

"I am looking at Goodman 2 Ton 14 SEER Heat Pump Air Conditioner Condenser Model: GSZ140241. And the instruction says 2 1/2' elevation if design temperature is +15 and above...." A typo here - it is 2 1/2", not 2 1/2'.

As per 57Tinkerman's calculation and manual, it looks like that I should aim for 8" riser, not 2 1/2".

Thanks -

Jim
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Old 08-24-2020, 06:05 AM   #19
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Re: Heat Pump on Deck


Thanks beenthere. Definitely more than 3" above pan or drain pan after all the feedbacks here.

Thanks - -

Jim
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