Trane XV18 heat pump: How low does it modulate?
Anybody know how low the Train XV18 heat pumps can modulate, in both cooling mode and heating mode?
I’m specifically interested in the 2-ton model.
Also, anybody know the max heating capacity at 17 F?
The info is very easy to find for Carrier variable speed heat pumps, but I can’t find anything from Trane itself detailing the specs of Trane’s variable speed heat pumps.
Thanks.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Replies
NEEP's database doesn't list the 2- tonner, but the max capacity of the 3-ton 4TWV8036A1 is pretty much the same as it's AHRI rated numbers @ +17F. So just assume the AHRI rating is it's max capacity, give or take.
With the 3 tonner, depending on which air handler, at +17F you get :
minimum rated maximum
16,040 26,800 26,900
16,700 26,800 26,900
16,370 26,600 26,700
At +47F it has wider range. At that temp depending on air handler option you get:
minimum rated maximum
8,500 33,200 33,400
8,500 33,000 33,100
8,400 32,800 32,900
At +5 F the modulation range is narrower still
minimum maximum
16,894 20,420
17,640 21,040
17,194 20,600
I suspect it's a similar story with the 2-tonners.
On the mass.gov website they have more info on the 2 tonner. It's AHRI rated output @ +17F is 16,800 BTU/hr (so it's max is probably less than 17K), and the max output @ +5F is 13,000 BTU/hr.
https://www.mass.gov/files/documents/2018/02/07/Eligible%20Small%20ASHP%20-%20Clean.xlsx
There's nothing about it's minimum modulated output, but on the NEEP spreadsheet both the 3 ton & 4 ton units can modulate down to between 1/4-1/3 of the "rated" output at 47F. The AHRI rated output of the 4TWV8024A1 at +47F is 20,000 BTU/hr so it's minimum @ 47F is probably between 5000-7000 BTU/hr.
http://www.neep.org/sites/default/files/ColdClimateAir-SourceHeatPumpSpecificationProductListing-Updated6.22.18_0.xlsx
I had this saved for the model that is one step higher than the XV18 https://www.greenbuildingadvisor.com/sites/default/files/Trane%20XV20i%20air-source%20heat%20pump.jpg