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Old 03-18-14, 08:21 PM   #12
jeff5may
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Join Date: Jan 2010
Location: elizabethtown, ky, USA
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Ok, so I "turn and burn" tested the unit overnight to make sure it worked. I put it in the basement and rigged the cold air outlet to the dryer vent. It ran flawlessly on high cool all night. When I checked on it the morning after, the basement was a toasty 80 degF! The built in thermostat said 79. I put it on low cool and the thing ran until around 10 AM. The basement temp had dropped to 75. I shut it off for a few minutes to dismantle the dryer vent rig (wife had to use dryer).

I decided to do some measurements on the unit for fun. It sat on a kitchen island with its cover removed, just churning basement air. The temp was 73 degF.

First, fan only power: Low = 128W, 135VA; Med = 134W, 140VA; Hi = 140W, 153 VA.

Next, I took readings of everything at all 3 cool speeds (Waiting for everything to settle first. What I found was strange.

Power: Hi = 1115W, 1164VA; Med = 1075W, 1115VA; Low = 800W, 850VA
CoolAirOut: Hi =43.3 degF Med =41.2 degF Low = 43.5 degF
SuctionLine: Hi =44.0 degF Med =40.5 degF Low = 36.8 degF
DischargeLine: Hi =116 degF Med =115 degF Low = 111 degF
CondenserSat: Hi =96.3 degF Med =96.6 degF Low = 93.5 degF
LiquidLine: Hi =83.8 degF Med =82.2 degF Low = 76.2 degF

It looks as if the mfr went to great lengths to make the unit blow the same temperature air, regardless of speed. If so, BTU output would only depend on fan speed. The published SEER value would be good only at one fan speed and one temperature. Otherwise, it would roam all over the place!
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