Install the 90 degree elbows on the two increasers and then rotate the elbows so that they re aligned with one another.
Water heater flue pipe installation.
The common rule is that the horizontal part of the single wall vent pipe must be equal or shorter than 75 of it s total developed height.
Make the vent pipe section between the water heater and the chimney as short and as straight as possible.
Water heater venting basics.
Most residential water heaters cost 150 to 400 for either gas or electric plus 200 to 450 if you have a plumber install it.
More expensive gas water heaters with special venting systems also are available.
Installation costs and labor plumbers typically charge 45 to 65 an hour and can usually install a water heater in a day or in 6 8 hours.
Illustration above an unused chimney flue or masonry enclosure may be used as a passageway for the installation of the water heater vent pipe.
The duct may be metal or plastic depending on the type of vent system.
Always increase the size of the flue pipe as you go to the chimney and make sure that the flue always pitches upward to avoid trapping exhaust gases.
Venting through existing chimney.
The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces.
Power vented water heaters work the same as ordinary water heaters but the exhaust gases are blown out with a small fan instead of rising upwards through metal pipes.
Install an increaser on the flue base on the water heater.
Atmospheric venting refers to a system in which exhaust from the water heater naturally rises out of the appliance s combustion chamber then travels up through a standard chimney style flue.