1) Source: Moritz, A.R. and Henriques, F.C., Jr. (1947).
Studies of thermal injury. II. The relative importance of
time and surface temperature in the causation of
cutaneous burns, Am J of Pathol, 23, 695-720.
Approximate time-temperature relationship until
there is a risk of scalding
This product can expose you to chemicals including lead, which
is know to the State of California to cause cancer and birth
defects or other reproductive harm. For more information go to
BOSCH water heater complies with the State of California Lead
Greentherm T9800 SEO residential models
– maximum temperature 120 °F (49 °C)
High power segmented burner with low NOx emissions.
Modulating gas valve.
Modulating water valve.
Active bypass water valve for quick response to changing
Burner power segmentation with modulation range from
High quality materials for long working life
Copper heat exchanger.
Stainless Steel 316L condensing heat exchanger
Compact space saver: mounts on a wall with a supplied
Easy minimum to achieve low output power.
Easily removable one-piece cover.
On/Off and Temperature remote control.
Program button (Selectable temperature default).
Failure codes for easy diagnostics and repair.
Real-time diagnostics for troubleshooting/informational
1) Can be programmed to achieve 140 °F (60 °C)
Note: The freeze prevention kit is designed to provide
protection for the water heater down to approximately -4 °F
(-20 °C) for short term conditions only when protected
from direct wind exposure. It will not protect the appliance in
areas where the temperature is routinely expected to be below
freezing. Drain the water heater in the event of power outage in
- The freeze prevention kit will not protect plumbing outside the
appliance from freezing. Precautions should be taken.
Accessories (Bosch part #)
BOSCH is constantly improving its products, therefore
specifications are subject to change without prior notice.
Greentherm T9800 SEO 160/199 | SECO 199 – 6 720 817 281 (2018/12)
Built in freeze protection.
Integrated siphon to limit condensate freezing in external
Neutralizer Kit (7738001483)
Aquastat kit (7736504584)
Recirculation pump kit (7736504585)
Tank loading NTC (7736504583)
Wired remote control (7736504946)
Wired remote control with WiFi (7736504945)