You re only going to need 12 in setback from the window door in the case of direct vent installation.
Tankless water heater clearance window.
Tankless water heater vent clearances if the unit is vented to the outside then it needs 12 inches of clearance from a door or window.
Sunday june 17 2018 an outdoor gas tankless water heater should not be located within an area extending twelve inches to the side and one foot above or below any door or the operable area of a window that can be opened per ansi a21 10 3.
Tankless water heaters should not be installed near dryer vents or intake air vents.
15 cm for water heaters less than or equal to 10 000 btuh 3 kw.
If the water heater is installed above the.
If the window does not open the tankless water heater clearance from a window requires a 12 inch setback.
Not installed in attic or other spaces where damage may result from a leaking water heater without an approved safe pan beneath the water heater with a minimum inch drain to an approved readily visible location.
B clearance to window or door that may be opened.
What is the minimum clearance to doors and windows for an outdoor tankless gas water heater.
A tankless water heater requires a 4 foot clearance from the side or below a door or window that opens unless the unit is directly vented to the outside.
Cpc 508 4 required access clearances to combustibles and vent termination location per manufacturer s instructions.
30 cm above anticipated snow level.
When your tankless water heater is mounted above a window or a door you need to allow it 12in of clearance.
30 cm above anticipated snow level.
Should the window remain closed at all times you can give a 12 in setback for the water heater.