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Search: Posts Made By: u3b3rg33k
Forum: Geothermal & Heat Pumps 07-11-18, 09:01 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
I've been thinking on a method of control for the...

I've been thinking on a method of control for the second fan, and I think perhaps a damper is a better idea. I found a place that makes custom sized aluminum zone dampers, which means i wouldn't...
Forum: Geothermal & Heat Pumps 07-01-18, 03:50 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
I like the nidec servo D1225C12B5AP and the rest...

I like the nidec servo D1225C12B5AP and the rest of the lineup. great bearings, good static pressure, very tolerable noise. I wasn't thinking down that route but it's worth a thought or two. only...
Forum: Geothermal & Heat Pumps 06-30-18, 01:41 AM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
I've been thinking of how to do a fan wall with...

I've been thinking of how to do a fan wall with computer fans - I need 250+cfm (factory spec) on the inside, and 500-800 cfm for the outdoor half. I think those numbers are going to be difficult to...
Forum: Geothermal & Heat Pumps 06-29-18, 06:28 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
it's already got a 3 speed fan. since it's not...

it's already got a 3 speed fan. since it's not ECM, I assume the low speed tap without the outdoor fan load will run at a higher RPM than before, so i likely won't want it faster than that. the...
Forum: Geothermal & Heat Pumps 06-29-18, 03:59 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
I've run into a minor hiccup - all of the...

I've run into a minor hiccup - all of the reasonably priced 12V fans I can find are brushed motors, which means shorter lifespan. anyone have a good idea for a long life fan that might fit at a...
Forum: Geothermal & Heat Pumps 06-17-18, 05:10 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
A little progress on disassembly: ...

A little progress on disassembly:
http://ecorenovator.org/forum/attachment.php?attachmentid=8249&d=1529269515

a picture of the heat strips:...
Forum: Geothermal & Heat Pumps 05-08-18, 11:42 AM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
so far the high power relays and control...

so far the high power relays and control board/thermostat are here. I have confirmed fan behavior (on while compressor/strips active) is as needed, so no additional logic for that needs to be built.
Forum: Geothermal & Heat Pumps 04-24-18, 04:34 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
That's quite possible - I'm doing this because I...

That's quite possible - I'm doing this because I want to repurpose something I own already, it's cheaper than buying a minisplit, or a traditional split system - and it won't require me to pull any...
Forum: Geothermal & Heat Pumps 04-20-18, 07:53 PM
Replies: 13
Views: 4,654
Posted By u3b3rg33k
windowshaker heat pump controls hacking

I have a happy little frigidaire FFRH0822R1 - that's an 8k cap tube window mounted heat pump.

it works great down to 40F, where it switches over to the 1kW strip heat, providing less heat, and...
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