Return to the Appliances Forum | Post a Follow-Up

 o
Question on Hood vent pipe installation

Posted by Skidkid (My Page) on
Sun, Oct 21, 12 at 19:41

I am about done with the kitchen remodel, only a couple of things left. I am about to install my new ModernAire hood, Fantech silencer, and Abbaka HyEx-14 blower and I have a question about the vent piping.

I have installed dryer vending and I know that it isn't screwed and the joints go in the direction of the airflow. In other words, the crimped end points toward the outside.

A quick read of various materials makes it appear that this type of pipe may be screwed and there is no mention of a direction for the joints. The silencer has slip on connections with rubber seals, same on both ends, and no apparent screw points.

The conflicting information leaves me uncertain if there is a directionality for the pipe and if it should be screwed at joints or not. Can someone give me a pointer on this?

I live in San Jose, CA if that makes much of a difference.


Follow-Up Postings:

 o
RE: Question on Hood vent pipe installation

I don't know what San Diego's particular requirements might be, but suggest the following.

Screws can ensure that ducting doesn't separate.

Rubber lined clamps such as go with the Fantech parts don't need screws.

The choice of having the duct section female ends at higher elevation than the male ends will help keep any grease accumulation from leaking out.

(If this were a commercial application, the ducting would have to be steel, welded at the connections, and provided with clean-outs.

kas


 o
RE: Question on Hood vent pipe installation

Thank you. Residential application but I am using steel 10" duct. Not much room for things to move around up there so I will strap things down and tape the joints with aluminum tape.

There is not much vertical pipe. The path is through the ceiling, then horizontal for ~5 ft to the silencer (horizontal as well), immediate 90 and less than 2 ft rise to the blower.


 o
RE: Question on Hood vent pipe installation

2 45* are better than 1 90* as far as air flow is concerned.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Appliances Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here