Specification

Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances | BTC 748008303 B | 12.2019
Bosch Thermotechnology Corp.
Watertown, MA • Londonderry, NH • Ft. Lauderdale, FL
Tel: [phone] Fax: [phone] www.boschheatingandcooling.com
Engineering Submittal Sheet
Bosch Greentherm T9800 SEO 160/199
Gas Tankless Water Heater
Engineering Specifi cations
INSTALLATION
All aspects of installation of Water Heater system shall be in
strict accordance with manufacturer’s instructions.
The Water Heater shall be installed in outdoor applications in
accordance with manufacturer’s instructions.
Water Heater will include a barometric pressure sensor that
will be used to determine the altitude of installation and
automatically implement combustion adjustments.
Water Heater will have bottom mounted water connections.
Water Heater shall include an ASME approved temperature/
pressure relief valve with a setting of 150 psig. Water Heater shall
require a minimum gas pressure of 3.5" W.C. of natural gas.
MODE OF OPERATION
The outlet water temperature shall be shall be fi eld adjustable
between 100°F and 140°F.
Water Heater shall be capable of maintaining the outlet
temperature within an accuracy of ±2°F. This shall be accomplished
by modulation of fi ring rate and the use of the active bypass valve.
WARRANTY
The water heater shall carry a limited warranty subject to the
manufacturer’s warranty terms.
The warranty terms are available on Bosch website:
https://www.bosch-climate.us/products-bosch-thermotechnology/
gas-tankless-water-heaters/
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Performance Data
Unit T9800 SEO 160 T9800 SEO 199
Maximum fl ow rate at a 35 °F (19.4 °C) rise GPM (l/min)
9.0 (34.0) 11.2 (42.4)
Maximum fl ow rate at a 45 °F (25 °C) rise GPM (l/min) 7.0 (26.7) 8.7 (32.9)
Maximum fl ow rate at a 55 °F (30.6 °C) rise GPM (l/min) 5.8 (21.9) 7.2 (27.5)
Maximum fl ow rate at a 75 °F (41.7 °C) rise GPM (l/min) 4.2 (15.9) 5.2 (19.7)
Maximum fl ow rate at a 90 °F (50 °C) rise GPM (l/min) 3.5 (13.2) 4.4 (16.6)
Maximum gas input¹ BTU/hr (kW) 160 000 (46.64) 199,000 (58.3)
Minimum input² BTU/hr (kW) 9,000 (2.6) 9,000 (2.6)
Maximum output BTU/hr (kW) 157 608 (46.2) 197,010 (57.7)
Thermal effi ciency (Effi ciency in %) %
> 99% > 99%
¹) Input rating is based on sea level operation and need not be
changed for operation up to 2000 ft (610 m) elevation. For
operation at elevations above 2000 ft (610 m), input rating is
automatically reduced at the rate of 4 percent (US) or 10 percent
(Canada) for each 1000 ft (305 m) above sea level.