Tankless Water Heater Vent Pipe Slope

Select either an adapter of three inch or an adapter of four inches depending on what water heater model you decide.

Tankless water heater vent pipe slope.

This configuration allows tankless units to fit in smaller spaces. If you plan to install this. The condensate should not drain through a heater but the trap. Your vent should slope slightly downhill from the water heater s heat exchanger or be constructed with a condensate drain near the exhaust outlet.

In fact tankless water heaters save up to 16 square feet of space. Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust. Illustrations of proper gas fired water heater venting using type b double wall vent pipe through a roof above or through a chimney below include details for the flue vent connector such as the requirement of a minimum vent connector upwards slope of 1 4 per foot of horizontal run. Tankless water heaters are vented in two ways.

Direct vent and power vent. This video is to help understand the proper type of venting to use when installing a rinnai tankless water heater you can find this venting on rinnai s websi. Blockages prior to connecting it to the water heater or boiler unit. This may limit some people on the placement of the tank since it needs a larger area to be able to get the proper ventilation for the air intake.

The standard galvanized vent from your old storage tank heater would quickly rust away if your tankless heater vented through it. This takes in the air from the surroundings so it uses the inside air to vent with an exhaust leading out of the house. What is the slope supposed to be on a connector vent pipe of a hot water heater nat gas. All emission of liquid or gas water heaters which are tankless needs vent pipes made of stainless steel and approved by ul.

Also it is recommended to install vent screens to prevent foreign objects from entering the terminal. 1 foot rise minimum. Horizontal vent pipe runs must be supported every 4 feet 1 2 m minimum. Downhill slope or condensate drain.

A power vent has the intake on the actual body of the tankless heater and not through a pipe or vent. 1 4 inch per foot slope also is there suppose to be a a minimum rise of vent pipe above the draft hood before an elbow. If you have a condensing tankless water heater slope the venting per foot and toward the heater. The common vent system covered in this manual is approved only for direct venting applications.