COMMUNITY FORUM

dbier

07:25PM | 10/20/98
Bvelectrical
I'm going to install a duct booster vent fan to help better pull/push
heated/cooled air to my slightly remote family room. The manufactorer of
the duct booster fan also sells a sensor that suppossedly will sense air
movement (i.e. will know when the furnace blower is on) and will turn
the booster fan on and off accordingly. However, I don't really trust
that the company's sensor will work well plus it has to be adjusted
differently (i.e. temperature settings) for heating versus air
conditioning (besides, the sensor isn't cheap). I would much prefer
wiring the booster fan directly to the furnace blower or
controller/limit switch so that whenever the main blower comes on the
booster fan also comes on. I'm very comfortable working with electricity
and have considered using my volt meter to locate a 120V hot line going
to the blower and tapping it for the low draw booster blower. I'd like
some advice on what I'm attempting to do. Is there a better way? Any
advice/thoughts are welcome.

strangedog

12:23PM | 09/25/02
Member Since: 09/24/02
2 lifetime posts
Solution is mine. Safe and flame retardant.

Items needed to do this job.

$24 Interface X10 To Dry Contact or Low Voltage Inputs
$12 X10 Appliance Module
Priced at smarthome.com
2 conductor wire
wire strippers
MultiTester (or the oweners manual for your thermostat)

Remove the theromstat from the wall. Find the contact that closes on your thermostat when the heat (or AC) comes on. You can use a multitester to test continuity. Attach the wires from the thermostat to the contact closure module. Set the device code and plug it in. Plug the blower into the appliance module, set the same code and plug it in. If you have problems there are a lot of X-10 troubleshooting guide in the web.

There is usually a safe way to solve these kinds of problems, sometimes you just need to look a little deeper.

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