240 volt Dryer controls 120v booster fan?

[sw_ross]

If a booster fan was needed due to a long run of venting how would you control the booster fan by automatic method so when the dryer turns on the 120v booster fan kicks on?
Thanks!

 

[ptonsparky]

A small current switch that controls a relay big enough for your fan.
Try automation direct or other similar if you don’t have a source locally.

 

[readydave8]

Or a sail switch

 

[retirede]

Or a sail switch

The booster fan may never shut off once it starts.

 

[curt swartz]

All the booster fans I have had to run power to have just required a constant hot receptacle. They sense the air flow from the dryer to turn on/off.

 

[ptonsparky]

All the booster fans I have had to run power to have just required a constant hot receptacle. They sense the air flow from the dryer to turn on/off.

Even better!!

 

[MTW]

Example

Tjernlund Dryer Duct Booster® Fans - Tjernlund Products, Inc.

Model LB2 – No Clog Dryer Duct Booster® Dry your clothes faster and prevent lint build up with the new Dryer Duct Booster®. Clothes dryers are often installed in areas of homes where they cannot work effectively. This is because moist air cannot effectively exit the dryer and exhaust to the...

tjernlund.com

 

[kwired]

All the booster fans I have had to run power to have just required a constant hot receptacle. They sense the air flow from the dryer to turn on/off.

Pressure differential switch would work as well. We are talking ones that have settings in the inches of WC for the set point. Though lint build up could be potential problem for performance of both pressure and a sail switch, I would think it would be more of a problem for a sail switch.

 

[JohnE]

All the booster fans I have had to run power to have just required a constant hot receptacle. They sense the air flow from the dryer to turn on/off.

^^^This^^^

 

[hillbilly1]

Pressure differential switch would work as well. We are talking ones that have settings in the inches of WC for the set point. Though lint build up could be potential problem for performance of both pressure and a sail switch, I would think it would be more of a problem for a sail switch.

Home Depot had that problem with the ventilation proof switch in their tool rentals, which was a sail switch. Dust build up would weight down the sail switch. I Changed it to a pds like you mentioned, and didn’t have any more problems.

 

[Little Bill]

What is a sail switch?

 

[ptonsparky]

A micro switch with a sail on it. Wind blows against the sail and moves the switch.

 

[readydave8]

What is a sail switch?

a microswitch, lever moves by air flow

ETA: as ptonsparky would more quickly say