Bosch 520PN Applications Manual page 38

Applications Manual
3 6 | THERM/GREENTHERM Tankless Water Heaters
Common venting with vertical or horizontal termination
Schematic shows both vertical and horizontal
setup. 45° and 90° elbows can be used as needed.
The vent pipe must over its full length be sloped
toward the water heaters and low points are not
permitted.
Data subject to change Bosch Thermotechnology Corp.