I'm predominantly in servicing but you can mix and match units as long as the specs.
You'd need to be using a Carrier heat pump air handler with the heat pump condenser.
The coil and the TXV in the air handler is what needs to match.
Will the air handler have back up electric heat ?
You need 7 wires from thermostat to air handler. I'd run 8 wires.
You need 5 wires from air handler to condenser. I'd run 6. You could also use 8 wire.
I can give you the exact diagram when you get your equipment finalized.
My second-floor condensing unit has the following inside of it:
[img]https://cimg1.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1079x1439/20230201_122439_16a4826e57b5d7298dfd251d38c539ad6f6353f8.jpg[/img]
[i]Interior of condenser #1[/i]
It's also using the largest amount of amperage of all three condensers: 11.25 ampere vs. 8.08 on the first-floor that's an acutal larger unit and 3.12 on the guest room's unit. I also noticed that it has a booster capacitor, so wondering if this is a sign that it's failing. Here's what the side sticker reads:
[img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1437x353/firstcondensorsticker_552e93f3eb03088f3e55798731321254d9f9e89e.png[/img]
It's faded but the RLA appears to be 26.9 and the LRA 145. Does that sound right? That's a ratio of 5.4:1 which seems in line with the other two condensers who have their stickers intact.
And here's a video of me testing the unit. I hope I got those cables right!
[url]https://youtube.com/shorts/XxV2HPW-ABU[/url]
Let me know what you can recommend, if anything.
Thanks!
01-29-23, 03:10 PM
