It looks like you have the easy select board with Aux terminals that are normally for the EAC control but can be used to energize the coil of a fan relay.
The easiest way to do it is to use the thermostat G wire and C to activate the relay.
Connect the blower motor common to 120v common.
Connect the desired speed wire thru the relay.
On a G demand the blower will operate.
There is an ICM board that takes the commands and generates 24v outputs to the ECM.
You will have to check those 12 wires/pins to find which ones supply the 24v signal you need. Downloadable manual
There really isn't a basic wiring diagram. This is something custom as you are installing a different type motor that requires multiple relays to allow the furnace to control the blower. A quick easy way to get back in service is get your blower motor and a 24vac DPDT relay. Set the blower up for one speed now and work on building a multispeed system. You can post the wiring diagram from your furnace. Post the model number too.
ive got the psc motor with as close specs as possible
it has the appropriate capacitor in the box. i also have the
DPDT relay. the model number of the Bryant unit is
574BNW036090NB. i’ll find a wiring diagram online because the
diagram on the panel is old and faded. Gosh there must be hundreds of wires
all over. those guys on you tube just yank off most of them out and start from scratch.
Again , thank you for your help
thank you houston204 for all of this valuable
information. there is a gas/electric switch on the
thermostat. it’s on gas now. just need to get back up
on the roof and get the connections done when this
rain lets up.
Hello Builders!
I have a set of condensors outside my home that appear to use the 402a standard, so I'm really hoping I can just replace the compressors inside of them and not have to replace the condensing units or attic furnaces. The compressors seem to use a lot of electricity, are loud and I wouldn't be surprised if they're the ones built with the house in 2006. Anyways, here are some photos, let me know what you think:
[img]https://cimg8.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20230103_095503_f8737eee3e1e49ecc55eb5b65c8f6f9eb9452525.jpg[/img]
[img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20230103_095515_6749c6ecb2a88f8fed98c60077c01c932d3cb42b.jpg[/img]
[img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20221231_092652_feb4cb95681490eb4f5262da5b1f9637310644c7.jpg[/img]
[img]https://cimg5.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20221231_092726_42041f8f3eff356493de6a27e02c2cce9c78301a.jpg[/img]
[img]https://cimg7.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20221231_092755_29680b4624106fb16cc7953f680416f053761221.jpg[/img]
[i]The sticker faded! It's one of the larger ones in the photo above.[/i]
01-03-23, 07:26 AM
