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Size of the exhaust vent pipe on a 75 gallon gas water heater? Is it the same size as on a 50 gallon water heater. Brand is GE, mfg 2008

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I believe it takes 4" vent pipe up to 100,000 BTU
BTUs are shown on label side of tank.
http://waterheatertimer.org/pdf/Gas-venting-specs.pdf

Does new water heater have power vent? What does manual say?
Are you experiencing vent problem now? When you light a match and put it under vent stack, does smoke immediately get pulled upward? Are furnace and waster heater connected to same venting. Is there dark exhaust stain around vent hood? Does exhaust vent back out of vent hood when furnace kicks on? Are flue pipes stained with rust and white coating? Are vent pipes vertical, or are there level runs? Are the pipes made of galvanized and screwed together with 3 screws at each joint?

Frankly I would double-triple-check any internet answer dealing with possible CO poisoning at your home.
1) Ask local plumber for specific code in your area.
2) Call gas company
3) Post question on pro water heater forum:
http://www.thetankatwaterheaterrescue.com/forums/forum3/
4) Read whole manual for new water heater before buying.
5) Contact manufacturer.

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Posted on Apr 01, 2011

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1 Answer

Can i use my old vent pipe i had for my old 40 gallon water heater


If you are installing new tankless in place of 40 gallon gas water heater, then you CANNOT use same vent pipe.
You must use larger diameter pipe that is specified by instruction sheet, and the pipe must be approved plastic or stainless steel to avoid corrosion.
The vent pipe must also have a condensate trap to catch acidic water that drips back down the vent pipe.
The reason is that tankless burn more gas than regular tank-type heater... because tankless must raise temperature quickly as water passes in a pipe.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Gene

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Rheem 50 gallon powerdirect vent waterheater keeps cycling


Take note of the barometric pressure when this happens.

Feb 10, 2014 | Rheem Water Heaters

1 Answer

Have 75 gallon gas water heater. Can I run 90 PVC off top power vent without vertical PVC first? Have Richmond unit.


1) I believe you can immediately elbow the PVC pipe.
There is a limit for how many elbows can be used between blower and termination, and limit is determined by diameter of PVC pipe.

2) Copy following link for venting resources and typical Rheem and Richmond power vent manuals, and diameter-elbow pdf from Bradford White.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#venting

3) Richmond is Rheem. Product manual will show specifications for venting.
Product warranty is voided if installation does not follow specifications shown in manual.

Feb 20, 2013 | Rheem Richmond 75 Gal Natural Gas 6 Year...

1 Answer

Need a blanket for Rheem Water Heater model #22VRP75.


You have 75 gallon gas water heater.
I install water heater insulation 3 ways:
1) Easiest: buy ready-made blanket from Lowes and use duct tape
2) Harder: wrap heater in ordinary fiberglass insulation and use tie wire
3) Hardest: Build a box out of blue styrafoam >> leaving room for air intake for gas water heater, and space around vent pipe

Instructions for gas water heater:
Do not cover TP valve.
No insulation is put over gas valve or air intake.
No insulation touches vent pipe.
Remember the gas water heater has to breathe air into the burner, and aftter combustion takes blace, hot gases escape so extra space is left around hot vent pipe to avoid fire.

Find age of Rheem: look at 3rd and 4th digit of serial number, for example 06 was manufactured in 2006.

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Feb 11, 2011 | Rheem Tank Water Heater G75-125, 75 Gallon

1 Answer

Rheem 50 gallon water tank. can not burn. CO senser is alarming


sounds like the flue is plugged up. or the venting at the bottom is plugged
CO is deadly, do not use if your CO sensor is going off.

you need to clean out the vents at the bottom of the heater, especially if this is a newer model water heater. if the vents are plugged the flame will light for a minute, but get really big and yellow, and then flame will go out.... not getting enough air

be sure to check the flue pipe, birds like to make nests, and will cause the flue gas to escape into the house instead of outside.

if you have problems, please call a pro, CO is deadly!

Jul 01, 2010 | Rheem 50 Gallon FVR NATGAS Water Heater...

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What is proper vent size for my hot water heater


go to 4 better to big than finding 3 was to small

Nov 19, 2009 | Water Heaters

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Loud blower on my new Rheem Power Vent 2 water heater


find out if it does the same noise with the venting disconnected

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Why does the pilot light blow out on the water


Your vent pipe needs a cap. You should be able to find one at your local building supply store; just tell them your problem, and they will find the right product and let you know how to best install it.

Oct 12, 2009 | Bosch AquaStar Indoor Natural Gas Tankless...

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Takes a long time to heat water. Brand new Ge 50 gallon water heater. Once heated it right temp,just a long time to heat it and then won't maintain hot water. Is gas line to small? 3/8 copper line. Thanks


If you are using a 3/8" copper line for your gas, get it replaced ASAP. It will fail. 1/2" Black Iron is required with natural gas. 50 gallons is a lot of water to heat. Look on the heater label for the recovery rate.

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