condensate disposal (from tankless) - Plumbing Zone - Professional Plumbers Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!

Go Back   Plumbing Zone - Professional Plumbers Forum > Professional Plumbers Forum > Plumbing Code



Like Tree1Likes
  • 1 Post By klempner
Reply
 
Thread Tools Display Modes
Old 03-06-2017, 04:53 PM   #1
Member
 
Join Date: Mar 2011
Location: N Texas
Posts: 88

View klempner's Photo Album My Photos
Default condensate disposal (from tankless)

regarding condensate disposal from tankless WH, code says defer to manufacturer instructions. IFGC 307.2. manufacturer invariably says defer to administrative authority. administrative authority invariably says defer to manufacturer instructions. seems like unofficially, usually, ok to drain to pvc.
OpenSights likes this.
klempner is offline   Reply With Quote
The Following User Says Thank You to klempner For This Useful Post:
OpenSights (03-06-2017)
Sponsored Links
Advertisement
 
Old 03-06-2017, 08:21 PM   #2
Senior Member
 
Join Date: Feb 2015
Posts: 210

View The Dane's Photo Album My Photos
Default

We just run a hose over to a floor drain.


Sent from my iPhone using Tapatalk
The Dane is online now   Reply With Quote
Old 03-07-2017, 06:57 AM   #3
Senior Member
 
dhal22's Avatar
 
Join Date: Jul 2010
Posts: 2,519

View dhal22's Photo Album My Photos
Default

Cpvc/pvc line to a floor drain or condensate pump. Or discharge to outside with a neutralizer as an option.
dhal22 is offline   Reply With Quote
 
Old 03-07-2017, 09:59 AM   #4
GAN
Senior Member
 
GAN's Avatar
 
Join Date: Jul 2012
Location: St. Louis Metro
Posts: 1,074

View GAN's Photo Album My Photos
Default

In Illinois any relief or drain from a potable device must be received by a trapped and vented appurtenance via a fixed air gap, inside the structure.

AC condensation must either dump into a properly vented and trapped drain inside the structure via a fixed air gap or dump to the exterior on the ground as long as when to the exterior does not cause a slipping hazard.
__________________
Il. Lic.# 058-106725, Il. C.C.D.I. Lic. # XCO396
Remember valor, honor, independence, family & clan;
I do whenever I hear the ceol mor,
the "great music" of the Highland bagpipe. I swear upon the holy iron of my dirk that I will not forget.
GAN is offline   Reply With Quote
The Following User Says Thank You to GAN For This Useful Post:
plumbdrum (03-07-2017)
Old 03-08-2017, 07:07 AM   #5
Senior Member
 
plumbdrum's Avatar
 
Join Date: Nov 2013
Location: Ma
Posts: 2,836

View plumbdrum's Photo Album My Photos
Default condensate disposal (from tankless)

Quote:
Originally Posted by GAN View Post
In Illinois any relief or drain from a potable device must be received by a trapped and vented appurtenance via a fixed air gap, inside the structure.

AC condensation must either dump into a properly vented and trapped drain inside the structure via a fixed air gap or dump to the exterior on the ground as long as when to the exterior does not cause a slipping hazard.


I can understand the air gap for a relief valve, but my code for condensate from fuel appliances only kicks in when it get introduced to plumbing. In fact in our gas modifications to NFPA 54, condensate has been deleted from the code. Most times a hole gets drilled in the floor or pipe to a sump or outdoor. I know your going to say what if there is a failure in the heat exchanger and "could" although highly unlikely have a cross connection. My jurisdiction kicks in when it gets introduced to plumbing with a neutralizer and air gap or break.


Sent from my iPhone using Tapatalk
plumbdrum is online now   Reply With Quote
Old 03-08-2017, 02:17 PM   #6
Junior Member
 
Join Date: Mar 2017
Location: Boston, MA
Posts: 26

View loyale93's Photo Album My Photos
Default

Quote:
Originally Posted by The Dane View Post
We just run a hose over to a floor drain.


Sent from my iPhone using Tapatalk
This. In MA, a hose or PVC is perfectly acceptable.
loyale93 is offline   Reply With Quote
Old 03-09-2017, 08:38 AM   #7
GAN
Senior Member
 
GAN's Avatar
 
Join Date: Jul 2012
Location: St. Louis Metro
Posts: 1,074

View GAN's Photo Album My Photos
Default

Quote:
Originally Posted by plumbdrum View Post
I can understand the air gap for a relief valve, but my code for condensate from fuel appliances only kicks in when it get introduced to plumbing. In fact in our gas modifications to NFPA 54, condensate has been deleted from the code. Most times a hole gets drilled in the floor or pipe to a sump or outdoor. I know your going to say what if there is a failure in the heat exchanger and "could" although highly unlikely have a cross connection. My jurisdiction kicks in when it gets introduced to plumbing with a neutralizer and air gap or break.


Sent from my iPhone using Tapatalk
I will take a step back. If the tank-less has a double wall exchanger it's much safer and I agree a fixed air gap not really critical.

Not so much heat exchanger failure, but on a furnace AC condensation drain, with no fixed air gap or drilled into a FD grate, contamination with bacterial growth back up the AC drain and into the air exchanger, then dispersed around the home,

Legionella & HVAC systems >>>> https://www.osha.gov/dts/osta/otm/le...ires/hvac.html
__________________
Il. Lic.# 058-106725, Il. C.C.D.I. Lic. # XCO396
Remember valor, honor, independence, family & clan;
I do whenever I hear the ceol mor,
the "great music" of the Highland bagpipe. I swear upon the holy iron of my dirk that I will not forget.
GAN is offline   Reply With Quote
Old 03-09-2017, 08:56 AM   #8
Senior Member
 
plumbdrum's Avatar
 
Join Date: Nov 2013
Location: Ma
Posts: 2,836

View plumbdrum's Photo Album My Photos
Default condensate disposal (from tankless)

Quote:
Originally Posted by GAN View Post
I will take a step back. If the tank-less has a double wall exchanger it's much safer and I agree a fixed air gap not really critical.

Not so much heat exchanger failure, but on a furnace AC condensation drain, with no fixed air gap or drilled into a FD grate, contamination with bacterial growth back up the AC drain and into the air exchanger, then dispersed around the home,

Legionella & HVAC systems >>>> https://www.osha.gov/dts/osta/otm/le...ires/hvac.html


They are talking about humidifiers for the most part, a condensate drain from a fuel burning category 4 appliance would not have this problem, besides if it did back up and get into a cracked heat exchanger , legionnaires disease is the least of your worries.


Sent from my iPhone using Tapatalk
plumbdrum is online now   Reply With Quote
Old 03-19-2017, 08:38 PM   #9
Junior Member
 
Join Date: Feb 2017
Location: Arkansas
Posts: 12

View hanzkunzel's Photo Album My Photos
Default

When it comes to the Tankless Condensate drainage I stick with PVC as well. You can put a Neutralizer and drop in copper afterwards but do not use copper or other metals with it as it'll eat through it. You can drop into a metal drain if there is other stuff dumping into it at a somewhat regular basis like a laundry drain or floor drain. If you have an option to pop it outside that is definitely the best. My favorite deal on Tankless units is to install a Tankless pan under the unit. Then just dump everything into it and pop one 1in PVC drain out of the building. Then you don't have to worry about a mess ever especially when performing flushes and filter cleanings.
hanzkunzel is offline   Reply With Quote
Old 03-20-2017, 05:15 PM   #10
Member
 
Join Date: Mar 2011
Location: N Texas
Posts: 88

View klempner's Photo Album My Photos
Default

"or dump to the exterior on the ground as long as when to the exterior does not cause a slipping hazard."

so no harm to plants, I presume?
klempner is offline   Reply With Quote
Reply

Thread Tools
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
10 Reasons to Get a Garbage Disposal rayneplumbing Commercial Plumbing 20 08-31-2016 09:17 PM
Tankless Water Heaters kimo Residential Plumbing 20 03-03-2016 04:13 PM
Question about water supply for tankless heater GrtLksPlbr General Plumbing Discussion 27 12-01-2015 11:59 AM
ACT D'MAND on tankless wookie Residential Plumbing 1 10-23-2015 07:44 PM
help with disposal working with new sink depth dougbohr General Plumbing Discussion 7 10-05-2015 08:19 PM


All times are GMT -4. The time now is 03:33 PM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | ElectricianTalk.com | HVACSite.com | PaintTalk.com | RoofingTalk.com
 

Search Engine Optimization by vBSEO 3.6.1