||Thread Tools||Display Modes|
|12-22-2009, 07:46 AM||#1|
Join Date: Jul 2008
Posts: 233Rewards Points: 150
does a hotwater tank need chimney
can you vent a water tank out a window and bend up 90 degrees to above the roof with flue pipe? or does it have to go into a chimney? regular natural gas one.
|12-22-2009, 08:09 AM||#2|
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248Rewards Points: 2,000
You can't go out windows with wood stoves or appliance exhaust
It's possible if you removed the top 1/2 of the window & built a fireproof panel it would be allowed
You would need to check with your local Building Dept
|12-22-2009, 02:07 PM||#3|
Join Date: Mar 2009
Posts: 11,292Rewards Points: 4,650
B vents less than 12” in diameter, terminate 2’ above any vertical surfaces within 8’. (G2427.6.5 #1)
B vents with vent caps 12” in size or smaller shall terminate a minimum of 12” from roofs when 6/12 or
flatter. See Tbl. 8-A for other. (G2427.6.5)
Vent clearances to combustibles per manufacturer’s listing or performance standards. (M1803.3.4,
Single wall vents cannot penetrate a wall, floor or ceiling without a listed pass through assembly.
Vent terminations installed per the manufacturer’s listing. (M1804.2.1)
Venting systems terminate not less than 4’ below or 4’ horizontally from, and not less than 1’ above a door,
an operable window or a gravity air inlet into a building, nor less than 3’ above any forced air intake within
10’, nor within 12” of grade. (M1804.2.6 & G2427.8 )
Vent terminal not mounted directly above or within 3’ horizontally of a gas meter or oil tank. (M1804.2.6)
Vent terminal no closer than 3’ to an interior corner formed by (2) perpendicular walls. (M1804.2.6)
Power exhaust terminals not located within 10’ of property line and adjacent buildings. (M1804.2.6)
Where vents extending into an attic pass through insulated assemblies, an insulation shield of 26 gage
sleeve not less than 2 inches above the insulation, secured in place and maintain required clearances to
Venting supported per manufacturer’s listing. (M1803.3 & G2427.5.7)
Vent connector joints are fastened with sheet metal screws or rivets. (M1803.3)
Vent and chimney connectors installed within the same space that the appliance is located. (M1803.3)
Check with local B.D. before you close off part of a window or run it outside to " bend up 90 degrees to above the roof ".
Be safe, Gary
If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent.
17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?
|12-22-2009, 03:09 PM||#4|
An old Tradesmen
Join Date: Oct 2008
Posts: 32,951Rewards Points: 7,268
Becareful of running B vent for too long of a distance outside.
Some water heaters won't produce enough heat quick enough to keep from condensating inside the B vent(usually ones fired around 26,000 BTUs).
|Thread||Thread Starter||Forum||Replies||Last Post|
|gas hot water tank vent & chimney flue||trees||HVAC||11||10-16-2009 09:23 AM|
|Can't get water from Hotwater tank drain.||merle||Plumbing||9||03-14-2009 09:42 AM|
|Toilet||jpark||Plumbing||18||01-05-2009 07:12 AM|
|Nightmare water tank job||Marvin Gardens||Plumbing||6||11-04-2008 11:09 AM|
|Looks like leaking around the chimney - roofer says it is the chimney itself||Salvatorparadise||Roofing/Siding||6||03-07-2008 03:12 PM|