Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-08-2012, 06:49 AM   #1
Member
 
Join Date: Aug 2012
Posts: 89
Rewards Points: 75
Default

furnace fan wiring improvement


Hi all,

Currently we have a multi speed direct drive fan in our furnace. And we have a heat pump for AC in the summer and light heating. When it's cold we use oil. The thermostat has a switch for fan auto or on. It works fine, and I believe it is wired for highest speed only for both setting.

I would like the system to work as follows:

in Auto mode when using AC: fan either off or high speed.
in Auto mode when using heat: fan either off or lower speed.

in On mode when not heating or AC: fan on lower speed.
in On mode when using AC: high speed.
in On mode when using heat: lower speed.

The reason for high speed on AC is because cold air is heavier than hot air...therefore requires more power to move it.

I'm not sure how many speeds the motor has at this time. I will investigate further.

Any other suggestions or ideas are welcome.

What would I need to buy? And a wiring diragram.
I don't mind having a manual switch to swith between summer and winter mode if necessary.

We have an Aube thermostat model TH146 (multistage) and the control module: CT280-2H1C
manual here: aubetech.com/manuel/2/69-2674_A.pdf

Thanks!
Terry

tls1 is offline   Reply With Quote
Old 08-08-2012, 06:55 AM   #2
HOTDAWG
 
Join Date: Aug 2012
Location: Canada
Posts: 104
Rewards Points: 75
Blog Entries: 1
Default

furnace fan wiring improvement


if you could post some pics that would help

Acomfort is offline   Reply With Quote
Old 08-08-2012, 05:19 PM   #3
Member
 
Join Date: Aug 2012
Posts: 89
Rewards Points: 75
Default

furnace fan wiring improvement


Here is the motor...

there is a BX cable with three wires going to the capacitor. I guess 2 for power and 1 ground. I guess I would need to replace that...
Attached Thumbnails
furnace fan wiring improvement-motor50.jpg  
tls1 is offline   Reply With Quote
Old 08-08-2012, 05:32 PM   #4
Member
 
Join Date: Aug 2012
Posts: 89
Rewards Points: 75
Default

furnace fan wiring improvement


I removed the cover on the wiring box next to the capacitor. It was difficult to see and I did not want to disturb anything.

I guess the white is power.

The black (hi), blue (med), red (lo) are the other power.
I could not see the black, The blue was not connected to anything. The red appeared to be connected to another red wire.

It cannot be running on low... this things blows harder than well... I cannot say it ... I will be kicked out...

I will have to turn off the power later and try again.

terry
tls1 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Furnace wiring raleighthings HVAC 48 12-18-2011 11:26 PM
Day & Night furnace wiring diagram Paul Dahlin HVAC 9 03-03-2011 09:08 PM
Problem with Lennox Pulse Furnace Wiring to Thermostat scalvin Electrical 4 12-30-2009 07:48 PM
Need Luxaire Forced Air Furnace Wiring Diagram misticvillage HVAC 7 04-15-2009 04:09 AM
Putting a new Motor in a Carrier Furnace... Wiring issues cbrent HVAC 3 10-08-2007 06:08 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.