|
Plumbing Inspections Contains discussions about plumbing. |
![]() |
|
Thread Tools |
#1
|
||||
|
||||
![]()
Can a WH with a draft hood be used as a direct vent?
I am under the impression with, direct vented WH, that the intake and exhaust must be with in the same air pressure zone. That would means the intake and exhaust must be on the outside. The inspection I did had a new gas water heater from HD. I believe that the homeowner replaced it, with a non direct vent rated water heater. Don Peterson, CMI Peterson Home Services FLHI# 00433 |
#2
|
||||
|
||||
![]()
A direct vent water heater should not have a draft hood.
Here's an installation manual from State... Attachment 7929 Last edited by dvalley; 10/7/07 at 4:42 PM.. |
#3
|
||||
|
||||
![]()
Which Manufacturer of water Heater ?
Bradford White specs...... http://www.bradfordwhite.com/specmanparts_res_gas.asp Joe Hagarty mrdryervent@gmail.com Cell: (484) 883-7018 InterNACHI Boulder, Colorado National President / NACHI (2003-2004) NACHI Education Committee Member Certified CMI Master Inspector Instructor PA NACHI Certified Inspector # 01102902 PA Licensed Radon Inspector # 2080 PA Licensed Pesticide Applicator # 700884 Delaware Licensed Home Inspector # H4-071 |
#4
|
||||
|
||||
![]()
Typical Direct Vent installation
http://intexinspections.com/dvti.png Here's a image for your reference files - Harvested and edited from the pdf file listed above |
#5
|
||||
|
||||
![]() Quote:
Did the "homeowner" replace it or was this done by a pro? I hope the homeowner did not do it and use the old existing venting system. ![]() ![]() The term draft hood to me (is the upsidedown bowl shaped) hood open to the atmosphere. Natural draft is the method. Should that be used for a "direct vent" not per MFG instructions I would think defeats the purpose of the appliance working as intended. The other posts are very very helpful . I like the Dave Valley "Button"... ![]() ![]() Happy Safe Holidays to all... ![]() |
#6
|
||||
|
||||
![]()
The draft hood is the "upside down bowl"
The HW tank is a GE from Home Depot It is installed using the old wall vent terminal and only utilizing the center exhaust port to the wall vent terminal. They used Aluminum 4" single wall for the exhaust and blocked off the intake portion of the comb wall vent. Don Peterson, CMI Peterson Home Services FLHI# 00433 |
#7
|
||||
|
||||
![]() Quote:
![]() I would call it out and recommend a "qualified professional" to evaluate that. Probably just cost the warranty and created an unsafe install in my opinion. Nothing like defeating the purpose of a direct vent appliance and altering the performance characteristics. So where is this thing getting combustion air from? The Draft hood??? ![]() |
#8
|
||||
|
||||
![]() Quote:
|
#9
|
||||
|
||||
![]() Quote:
|
#10
|
||||
|
||||
![]() Quote:
![]() This is actually my own water heater. I had a Propane fired one and when Natural Gas became available in my area it was cheaper to buy a new water heater than convert the one I had. The propane one did not have a draft hood but it was a different brand. Your post made me go look at mine and take the picture. One of my favorite things about being an HI is there always seems to be something new or something I didn't know about before. |
![]() |
Thread Tools | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Gas and oil hot water tank and Boiler Share Vents | hvanderbeek | Miscellaneous Discussion for Inspectors | 8 | 1/25/07 5:22 PM |
Fireplace / Direct Vent problem | srowe | Inspecting HVAC Systems | 5 | 2/16/06 1:57 PM |