Originally Posted By: bking This post was automatically imported from our archived forum.
Assume a 3600 SF house, 2-story, 40 gal. water heater in downstairs closet, exhaust venting ok, door to closet has 14 x 6 vents at top and bottom of the door. No signs of flame rollout or any problems.
Originally Posted By: cradan This post was automatically imported from our archived forum.
So, Todd…in the event of an overtemperature or overpressure event at the water heater, the “vertical” TPR discharge piping installation would look a little like Old Faithful above the roofline as you drove-by???
Originally Posted By: Mark Dudley This post was automatically imported from our archived forum.
The IRC requires 50 cu ft per 1000 btu/h for homes of ‘normal’ construction. Since the btu of the heater isn’t given, there’s no way to give a correct answer if there is enough combustion air from in the home or not.
If the home is of 'tight' construction then combustion air must be taken from outside.
But the vents are ok as long as the openings are at least 1/4"
Originally Posted By: tallen This post was automatically imported from our archived forum.
cradan wrote:
So, Todd...in the event of an overtemperature or overpressure event at the water heater, the "vertical" TPR discharge piping installation would look a little like Old Faithful above the roofline as you drove-by???
Originally Posted By: Daniel G. Stenabaugh This post was automatically imported from our archived forum.
I thought each opening, one at the bottom and one at the top of the enclosure needed to be a minimum of 100sq. in. regardless of the btu. At 6" x 14" this would not be adequate…
