InterNACHI


Go Back   InterNACHI Inspection Forum > Specific Inspection Topics > Inspecting HVAC Systems

Notices

Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

Reply
 
LinkBack Thread Tools
  #16  
Old 9/2/07, 8:51 PM
Joe Funderburk, CMI's Avatar
Joe Funderburk, CMI Joe Funderburk, CMI is offline
InterNACHI Member
 
Join Date: Dec 2005
Location: Hickory Grove, SC
Posts: 7,708
Send a message via Yahoo to jfunderburk
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by badair
Vent should be installed down stream from the condensate p-trap.
That makes perfect sense. I didn't catch the location of it prior to the trap.



“The things that will destroy America are peace at any price,
prosperity at any cost, safety first instead of duty first,
the love of soft living, and the get-rich-quick theory of life.”
Theodore Roosevelt


Joe Funderburk, CMI
Alpha & Omega Home Inspections, LLC
Inspecting Upstate SC & Charlotte Metro, NC
NACHI ID: NACHI05120170
www.aohomeinspection.com


Reply With Quote
  #17  
Old 9/2/07, 9:39 PM
mthomas2 mthomas2 is offline
Active Poster
 
Join Date: Oct 2005
Location: Evanston, IL
Posts: 703
Please Note: mthomas2 is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Condensate drain blowing cold air

From a typical Lennox manual. Trap both the primary and secondary (if connected to a drain), cleanout(s) go after the trap:
Attached Thumbnails
condensate-drain-blowing-cold-air-cond-trap-lennox-diagram-b.gif  
Reply With Quote
  #18  
Old 9/2/07, 9:58 PM
Brian A. MacNeish Brian A. MacNeish is offline
Banned
 
Join Date: Apr 2007
Location: CANADA
Posts: 4,638
Please Note: Brian A. MacNeish is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by mthomas2
From a typical Lennox manual. Trap both the primary and secondary (if connected to a drain), cleanout(s) go after the trap:
Ah! Finally a good diagram of what should be done. Thank-you.
Reply With Quote
  #19  
Old 9/3/07, 12:23 AM
Brian E. Kelly's Avatar
Brian E. Kelly Brian E. Kelly is offline
InterNACHI Member
 
Join Date: Oct 2004
Location: Phoenix, AZ
Posts: 15,862
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by Brian A. MacNeish
Ah! Finally a good diagram of what should be done. Thank-you.
Barry's diagram is better.
Reply With Quote
  #20  
Old 9/3/07, 12:26 AM
Brian E. Kelly's Avatar
Brian E. Kelly Brian E. Kelly is offline
InterNACHI Member
 
Join Date: Oct 2004
Location: Phoenix, AZ
Posts: 15,862
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by badair
Vent should be installed down stream from the condensate p-trap.

In hot-humid attics it is also advisable to insulate the condensate drain lines to avoid condensate forming on the pipe exterior and dripping onto attic surfaces, insulation, wood, drywall...

Advisable to install overflow switch on the drain pans when located on second floor or in attic

Secondary drain should not be plugged or capped
Nice digrams Barry.
Reply With Quote
  #21  
Old 9/3/07, 3:14 AM
Barry Adair's Avatar
Barry Adair Barry Adair is offline
InterNACHI Member
 
Join Date: Aug 2004
Location: TEXAS
Posts: 3,843
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by bkelly2
Nice diagrams Barry.
you're welcome but

Thanks, goes to Jerry Mc and the guys over at IN

Michael's are what all of use should be using, information provided in the instruction/installation manuals that are supposed to be with the equipment, yeah right just like the set for the WH.

So, Michael did you ever get the name of your office screen-shot program?

Linda,
The vent downstream in theory and reality stops the air loss from the drainpipe due to the weir of the p-trap as far as cabinet leakage you are right a tech will be required to evaluate repair probably mastic sealant.



ADAIR INSPECTION
972-487-5634

Commercial-Residential-Construction-EIFS-Infrared Thermography
TREC # 4563
EDI: EIFS-MA TX # 39

2008 US Member of the Year

life is the random lottery of events followed by numerous narrow escapes accept the good
Reply With Quote
  #22  
Old 9/3/07, 4:08 AM
Barry Adair's Avatar
Barry Adair Barry Adair is offline
InterNACHI Member
 
Join Date: Aug 2004
Location: TEXAS
Posts: 3,843
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by dvalley
My air handler unit is in my attic and never sweats. I've just never seen insulation on a condensate line. Oh well.
Dave,

You need to get out more often

Come down here where from May-Oct attics range from 100°F-150°F with RH hovering around 50%-99.999% and you'll see every unit inspected is sweating like a $20.00 hooker on Harry Hines Blvd.




ADAIR INSPECTION
972-487-5634

Commercial-Residential-Construction-EIFS-Infrared Thermography
TREC # 4563
EDI: EIFS-MA TX # 39

2008 US Member of the Year

life is the random lottery of events followed by numerous narrow escapes accept the good

Last edited by badair; 4/28/08 at 9:01 AM..
Reply With Quote
  #23  
Old 9/3/07, 7:22 AM
David P. Valley's Avatar
David P. Valley David P. Valley is offline
InterNACHI Member
 
Join Date: Jun 2003
Location: METHUEN, MA
Posts: 8,684
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by badair
Dave,

You need to get out more often

Come down here where from May-Oct attics range from 100°F-150°F with RH hovering around 50%-99.999% and you'll see every unit inspected is sweating like a $20.00 hooker on Harry Hines Blvd.
Ohh, I get out enough, it's just that our condensation lines simply do not sweat. Must be an outside weather thing.

I'll tell you what, send me a flight ticket to Texas and show me a thing or two! I'll be waiting by my mailbox for the ticket. Ohh, by the way, my son says that he's like to tag along also. So, two tickets will work.

Thanks Barry. I'm looking forward to tagging along with you.
Reply With Quote
  #24  
Old 9/3/07, 9:50 AM
mthomas2 mthomas2 is offline
Active Poster
 
Join Date: Oct 2005
Location: Evanston, IL
Posts: 703
Please Note: mthomas2 is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Condensate drain blowing cold air

Berry:

The one I really like is Snagit:

http://www.pcmag.com/article2/0,1895,1936101,00.asp
http://www.techsmith.com/screen-capt...KgoogleStmhome

though if you just want to do simple screen capture something like MWSnap works fine.

Last edited by mthomas2; 9/3/07 at 11:12 AM..
Reply With Quote
  #25  
Old 9/3/07, 10:13 AM
Barry Adair's Avatar
Barry Adair Barry Adair is offline
InterNACHI Member
 
Join Date: Aug 2004
Location: TEXAS
Posts: 3,843
Default Re: Condensate drain blowing cold air

David,
Step away from the mailbox.
Too late in the season to get the full monty.
Start looking for your ticket in April next year.
It would almost be worth it if you're willing to take all of the attics for a summer.

Michael,
Thanks for the links and other info I have gleaned from you over the years.



ADAIR INSPECTION
972-487-5634

Commercial-Residential-Construction-EIFS-Infrared Thermography
TREC # 4563
EDI: EIFS-MA TX # 39

2008 US Member of the Year

life is the random lottery of events followed by numerous narrow escapes accept the good
Reply With Quote
  #26  
Old 9/3/07, 1:38 PM
David P. Valley's Avatar
David P. Valley David P. Valley is offline
InterNACHI Member
 
Join Date: Jun 2003
Location: METHUEN, MA
Posts: 8,684
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by badair
David,
Step away from the mailbox.
Too late in the season to get the full monty.
Start looking for your ticket in April next year.
It would almost be worth it if you're willing to take all of the attics for a summer.
Thanks anyways.

If your looking for a great screen capture program without purchasing a single bit of software, it's right on your computer, if you're using Windows.
  • The first step is to create the windows that you want to capture and leave it right up on the screen.
  • Just to the right of your keyboard, you should see three groups of keys. The lower set of keys usually is a group of arrow keys. Above that is usually a set of some six keys that are labeled "Insert," "Home," "Page Up," etc. Above that should be three keys that have rather odd labels - like Pause/Break and ScrLk. One of those keys should be labeled PrtScrn/SysRq. Pressing Alt and PrintScreen at the same time places an image of the frontmost window on the clipboard. Pressing PrintScreen by itself places an image of the entire desktop on the clipboard.
  • If you press PrtScrn/SysRq, nothing will appear to have happened. However, your computer just took a snapshot of its screen and stored that picture on its clipboard, much as it stores information that you cut and paste.
  • Open MS-Paint. (From Start/Run, issue the command "mspaint".) Create a new empty image, and use Edit/Paste to bring in the screenshot you just took. (If the screenshot is smaller than the default Paint canvas, you will end up with white areas. Start over: create a new empty image, change its dimensions to 1x1, and Paste again. The canvas will grow for the Paste, but it doesn't shrink.)
  • Use MS-Paint to Save As, using PNG as the file format (it is superior to all the rest).
  • You're done...Now go get your screen capture in the file you just saved it in.
Reply With Quote
  #27  
Old 9/3/07, 7:30 PM
jlybolt jlybolt is offline
Active Poster
 
Join Date: Feb 2005
Location: Conroe, TX
Posts: 305
Please Note: jlybolt is a non-member guest and is in no way affiliated with InterNACHI or its members.
Default Re: Condensate drain blowing cold air

Dont see anything wrong with this setup in the picture. Done this way all the time here in Texas. Common to see primary condensate draining to bathroom sink. - yes
Texas SOP requires the primary drain line to be insulated. If not it has to be written up as in need of repair. Different parts of the country different requirements.

Last edited by jlybolt; 9/3/07 at 9:57 PM..
Reply With Quote
  #28  
Old 9/3/07, 9:08 PM
Larry D. Kage Larry D. Kage is offline
InterNACHI Member
 
Join Date: Jul 2004
Location: Lake Ann (Traverse City), MI
Posts: 8,482
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by dvalley
Thanks anyways.

If your looking for a great screen capture program without purchasing a single bit of software, it's right on your computer, if you're using Windows.
  • The first step is to create the windows that you want to capture and leave it right up on the screen.
  • Just to the right of your keyboard, you should see three groups of keys. The lower set of keys usually is a group of arrow keys. Above that is usually a set of some six keys that are labeled "Insert," "Home," "Page Up," etc. Above that should be three keys that have rather odd labels - like Pause/Break and ScrLk. One of those keys should be labeled PrtScrn/SysRq. Pressing Alt and PrintScreen at the same time places an image of the frontmost window on the clipboard. Pressing PrintScreen by itself places an image of the entire desktop on the clipboard.
  • If you press PrtScrn/SysRq, nothing will appear to have happened. However, your computer just took a snapshot of its screen and stored that picture on its clipboard, much as it stores information that you cut and paste.
  • Open MS-Paint. (From Start/Run, issue the command "mspaint".) Create a new empty image, and use Edit/Paste to bring in the screenshot you just took. (If the screenshot is smaller than the default Paint canvas, you will end up with white areas. Start over: create a new empty image, change its dimensions to 1x1, and Paste again. The canvas will grow for the Paste, but it doesn't shrink.)
  • Use MS-Paint to Save As, using PNG as the file format (it is superior to all the rest).
  • You're done...Now go get your screen capture in the file you just saved it in.
Thanks, David.



InterNachi Awards Portal: http://co.nachi.org/inachiawards/

____________________________________________
"An Education, not just an Inspection"

Larry Kage, CMI
Lake Ann (Traverse City), Michigan 49650
231 929 3525


Professional Inspector serving the Traverse City, Michigan area and beyond.
Reply With Quote
  #29  
Old 9/4/07, 11:11 PM
kweiss's Avatar
kweiss kweiss is offline
InterNACHI Member
 
Join Date: Apr 2004
Location: Rowlett, TX
Posts: 1,060
Default Re: Condensate drain blowing cold air

What about the ones with no trap.

I am seeing more and more of these. Around here they are all connecting to the drain at a vanity drain above the sink trap. I generally call it out and have several times had builders state that it isn't needed due to the fact that the sink drain is trapped.
Reply With Quote
  #30  
Old 9/4/07, 11:58 PM
Charley L. Bottger's Avatar
Charley L. Bottger Charley L. Bottger is offline
InterNACHI Member
 
Join Date: Apr 2004
Location: Marland, OK
Posts: 3,875
Default Re: Condensate drain blowing cold air

Quote:
Originally Posted by kweiss
What about the ones with no trap.

I am seeing more and more of these. Around here they are all connecting to the drain at a vanity drain above the sink trap. I generally call it out and have several times had builders state that it isn't needed due to the fact that the sink drain is trapped.
My biggest concern has always been can sewer gas get into the air stream of the furnace. With a wet trap or continous flow; as some would say it would not concern me.



Freedom Express Inspections LLC
CMOR Thermography Certified Level III #8486
freedomexpressinspections.com
www.oklahomathermalinfraredimaging.com
freedomexpress495@att.net
NACHI Member
Okla. State DEQ Environmental Phase One Certified
Master HVAC Mechanic (Retired)
Certified Universal Freon by 40CFR 82 Sub-part F
State License # 130
Serving the States of Okla, Texas, Kansas, Missouri , Arkansas and New Mexico with Commercial Inspections,Thermal Imaging
Reply With Quote
Reply

Thread Tools

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
near correct condensate drain bking Inspecting HVAC Systems 2 9/19/07 2:51 PM
Drain only for HVAC condensate? psiposs Plumbing Inspections 6 6/5/07 1:39 AM
If the primary condensate drain fails... jfunderburk Inspecting HVAC Systems 2 3/6/07 3:47 PM
condensate drain lprinzi Inspecting HVAC Systems 3 8/11/06 6:57 PM


All times are GMT -4. The time now is 1:48 PM.


Popular Sections

:

All Sections

Inspection News

InterNACHI Membership

Inspection Standards

Inspection Education

InterNACHI Inspectors

Inspection Links

 

 

 

NACHI.ORG Statistics

 

 

no new posts