Forum: Geothermal & Heat Pumps
02-15-22, 11:03 PM
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Replies: 3
Views: 35,197
Add vacuum pumps to the list of r290 hazards
Just had a vacuum pump blow up in front of me. I’m guessing it was from r290 bubbles in the oil. Not sure how bad it is because I refuse to look down but there’s a lot of blood and the wife won’t...
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Forum: Geothermal & Heat Pumps
02-13-22, 06:19 PM
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Replies: 0
Views: 8,432
Compressor sizes
I’m beginning to wonder if I received a mislabeled scroll compressor. This thing is huge! If I put my 2 ton rotary compressor up next to the scroll it’s easily double it’s size snd the scroll takes a...
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Forum: Geothermal & Heat Pumps
02-11-22, 10:30 PM
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Replies: 5
Views: 16,310
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Forum: Geothermal & Heat Pumps
01-13-22, 08:33 PM
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Replies: 8
Views: 14,045
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Forum: Geothermal & Heat Pumps
01-03-22, 11:34 PM
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Replies: 8
Views: 14,045
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Forum: Geothermal & Heat Pumps
12-29-21, 02:04 AM
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Replies: 8
Views: 14,045
Any VFD/motor driver experts in the house?
So i have a handful of BLDC Compressors that are absolutely useless to me because I haven’t figured out an off the shelf way to drive them. I’ve burned up a Teco L510 3hp and a cheap huanyang 12a vfd...
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Forum: Geothermal & Heat Pumps
12-21-21, 02:08 PM
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Replies: 2
Views: 9,909
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Forum: Geothermal & Heat Pumps
12-19-21, 07:53 PM
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Replies: 2
Views: 9,909
How long of a vacuum until braze safely with r290
Every time I release all the r290 to fix a leak I pull a vacuum for 30 minutes or so and hope it’s safe to apply the torch to. Every time though it feels as though I’m just getting lucky that it...
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Forum: Geothermal & Heat Pumps
12-19-21, 04:36 AM
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Replies: 0
Views: 7,681
(Tandem compressor)water heater update.
Here’s the gist of it:
-1x 10k btu r22 rotary comp in tandem with a 5k btu R32 rotary. (Yes I know ,diff oils , but at-least I scaled the suction line flow washer in size relative to Copelands...
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Forum: Geothermal & Heat Pumps
12-17-21, 01:00 AM
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Replies: 8
Views: 14,793
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Forum: Geothermal & Heat Pumps
12-17-21, 12:55 AM
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Replies: 8
Views: 14,793
I do have one on hand actually , but I believe...
I do have one on hand actually , but I believe these rotary compressors have one built onto them from the factory. I don’t think I’ll mess with the txv as per your guidance. Getting the ports on the...
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Forum: Geothermal & Heat Pumps
12-17-21, 12:50 AM
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Replies: 5
Views: 16,310
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Forum: Geothermal & Heat Pumps
12-10-21, 02:28 AM
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Replies: 8
Views: 14,793
Thank you,
Should be up in the next couple...
Thank you,
Should be up in the next couple days and I’ll post my metrics. In the mean time is there a trick to having my pictures appear larger and not sideways ? I’ve fiddled with it a bit and...
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Forum: Geothermal & Heat Pumps
12-09-21, 09:52 AM
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Replies: 8
Views: 14,793
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Forum: Geothermal & Heat Pumps
12-09-21, 01:23 AM
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Replies: 8
Views: 14,793
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Forum: Geothermal & Heat Pumps
12-09-21, 12:50 AM
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Replies: 8
Views: 14,793
As for details on the build… well. I must admit...
As for details on the build… well. I must admit that it makes no sense to do it the way I did. I’ve essentially reversed the advancements In HVAC technology back to the 90’s by doing away with the...
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Forum: Geothermal & Heat Pumps
12-09-21, 12:21 AM
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Replies: 8
Views: 14,793
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Forum: Geothermal & Heat Pumps
12-07-21, 11:56 PM
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Replies: 5
Views: 16,310
GMCC Inverter Rotary Compressors
Greetings,
Long time lurker and decided to register finally. Awesome forum. Finally a place for like minded individuals. The folks on HVAC talk and the various HVAC Facebook groups are a...
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