Vent Termination
Uncategorized February 28th. 2011, 7:44amVent Termination
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 Rheem Horizontal Vent Termination Kit RTG20210 NEW  US $86.98
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 Rheem Vertical Vent Termination Kit RTG20211 NEW US $126.98
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 Tankless Water Heater Rain Cap Vertical Vent Termination Noritz RC4 US $39.99
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 NORITZ VT3 SH TANKLESS WATER HEATER STAINLESS STEEL HOODED 3 VENT TERMINATION US $104.99
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 NORITZ VT5 SL TANKLESS WATER HEATER STAINLESS STEEL LOUVERED 5 VENT TERMINATION US $109.99
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 NORITZ VT5 SH TANKLESS WATER HEATER STAINLESS STEEL HOODED 5 VENT TERMINATION US $114.99
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 Rheem 90 Degree Termination Elbow with Vent Screen RTG20002F NEW US $46.98
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 duravent Dura Vent Termination Horizontal Cap 46DVA HC US $90.00
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 Noritz VT4 TS 8 N Vent Direct Vent Short Termination US $314.95
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 Noritz VT4 TL 8 N Vent Direct Vent Long Termination US $234.95
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 Noritz VT4 S45 Tankless Water Heater 45 Degree 4 Vent Termination US $39.00
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 Noritz VT4 S 4 Birdscreen Horizontal Vent Termination US $24.95
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 Noritz VT5 S 5 Birdscreen Horizontal Vent Termination US $29.95
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 Rheem Sweet Termination Direct Vent Kit RTG20060 NEW US $106.98
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 Tankless Water Heater Rain Cap Vertical Vent Termination Noritz RC3 US $29.99
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 Noritz VT4 SH 4 Horizontal Hood Vent Termination US $104.95
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 TAKAGI TK TV05 VENT BOX OUTSIDE WALL TERMINATION KIT US $89.00
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 Tankless Water Heater Horizontal Vent Termination Noritz VT4 S Bird Screen US $23.99
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 Rinnai 223182 Standard 21 Non Condensing Horizontal Termination Vent Kit 223182 US $80.00
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 Noritz VT4 SL 4 Louvre Horizontal Vent Termination US $95.00
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 Noritz VT4 TS 5 Sealed Combustion Short Vent Termination 35 51 US $265.00
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 Rinnai Raised Horizontal Termination Vent Kit Snorkel US $365.00
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 NORITZ RC4 TANKLESS WATER HEATER STAINLESS STEEL 4 VENT RAIN HOOD TERMINATION US $69.99
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 Noritz VT4 TL 27 Sealed Combustion Long Vent Termination Water Heater US $229.00
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 Takagi 2SVEPWCF0401 Z Vent Coupling Termination 4 US $18.99
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 Noritz VT4 TL 8 Tankless Water Heater N Vent Direct Vent Long Termination US $189.00
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 Noritz RC4 Tankless Water Heater Rain Cap Vertical Vent Termination US $54.00
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 Noritz VT4 SH Horizontal 4 Hood Vent Termination Tankless Water Heater US $95.00
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 Noritz VT4 TL 5 Tankless Water Heater N Vent Direct Vent Long Termination US $189.00
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 NORITZ VT4 SH TANKLESS WATER HEATER STAINLESS STEEL HOODED 4 VENT TERMINATION US $119.99
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 NORITZ RC3 TANKLESS WATER HEATER STAINLESS STEEL 3 VENT RAIN HOOD TERMINATION US $59.99
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 NORITZ VT4 SL TANKLESS WATER HEATER STAINLESS STEEL LOUVERED 4 VENT TERMINATION US $99.99
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 Rinnai Roof Discharge Termination Vent Pipe 184118 S US $82.00
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Enviro Gas Fireplace wont stay lit?
I recently added an expansion to my home. I got a used Enviro gas EG33 insert fireplace to go in the bedroom. I had it framed according to the instructions, venting comes out the back of the unit 45's and about 20 inches to the termination cap, about 3/4" rise from unit to term cap. My problem is this, I light the unit and it will burn for about 10-15 seconds and just shuts down, pilot goes out and all. Now if I lift the burps plate(its what I call it, its a plate across the top so if you get an large combustion it opens a touch to release pressure) the unit will remain lit and burn just fine, which lead me to believe it was a venting issue. I pulled all the venting out and double checked, it looks great.. At a major loss of what to try next. Helppp
Yes I check the valve and thermostat, also the thermopile and Thermo coupler, all checked out perfect.
check gas valve and the thermastat
Roof Leaks ~ Clues to the Source from Interior Damage
The location of stains showing water damage on the inside of the home can help reveal the problem area on the roof surface. This will make finding the point of entry easier and thus enable one to make repairs in less time.
Stains at ceiling to wall joints on an outside wall can indicate water getting in through the overhanging eaves of the house. Water and especially blowing rain can penetrate these areas for several reasons:
Water seeping in under the bottom edge of the roofing material will eventually cause the wood in this area to rot. Gutters may hide this damage and even contribute to it if they are not cleaned regularly. Water intrusion at this point can cause the decking material and surrounding wood to rot.
Water then can penetrate to the interior ceiling and wall. Plumbing vent stacks placed within these exterior walls and extending up through the roof surface can also be the cause of a leak in this area. The lead or neoprene flashings used to seal these vent stacks could be damaged or not sealed properly.
Tree trunks and branches resting against the roof can cause these areas to retain moisture contributing to wood rot, as well as directly damage the roof by having constant contact with it.
If no apparent damage is found in this area of the roof, the leak could be originating from other penetrations directly up the roof line from this area. The point of entry could be other plumbing vent stacks, exhaust vents, attic vents, etc.
Everywhere there is drainage for water inside the home, there will be a vent pipe attached to that drain line and vented through the roof. This fresh air is necessary for the water to drain properly. If water stains are evident on ceilings or walls in a bathroom, laundry room or kitchen, it could mean the leak is originating at one of the vent stacks.
If a single venting pipe is coming from the drain line and runs through the roof it is usually 1-1/2" or 2" in diameter. If the pipe coming through the roof is 3", it probably means more than one vent line has been combined and then extended to the outside.
Building codes require bathrooms to have either a window which opens, or a mechanical exhaust fan installed to reduce moisture in the room. The exhaust duct for this fan is either rigid or flexible and will exit to the outside through the roof deck or an exterior wall.
The bathroom exhaust, like the plumbing vent stack, does not necessarily run straight up from the source through the roof deck. They may however be located in the general vicinity. Therefore, a stain on a bathroom ceiling could very well be caused by a leak at the exhaust vent for that bathroom. Exterior vents for bathroom fans are usually 4" across on each side and square or rectangular in shape.
The clothes dryer also has an exhaust which will vent either through the roof or an exterior wall. If it penetrates the roof deck and there is staining on the ceiling in the laundry room, the source of the leak could be from this external vent.
The range above the stove top in the kitchen will usually have either an internal filtering system or it will also vent through the roof surface. Stains on the ceiling in this area could mean the leak source originates at this eternal vent. The duct from this exhaust fan is rigid and will run almost straight up through the roof.
On the roof this vent is usually larger than the bathroom exhaust vent caps. A range vent will terminate into a square vent on the roof which usually measures 10" across on each side.
As you can see, the location of stains on the inside of the home indicating a roof leak gives clues as to the point of entry on the roof. Knowledge of plumbing and ventilating systems in the home and the ways in which these are exhausted to the outdoors, also give helpful information toward isolating the point of entry of a roof leak.
Mike Beeghly
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About the Author
The author has over 20 years experience in the Roofing and Home Construction Industries.
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