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Greentherm T9800 SE(C) 160/199 Application Manual
06.2017 | Bosch Thermotechnology Corp.Data subject to change
4.3.1 Single T9800 with domestic hot water recirculation installation
Domestic
Hot Water
Domestic
Cold Water
NBT-23
Condensate
Neutralizer
)
(part# 7 738 005 514)
To drain or
pump
Gas
Legend
Full-port
ball valve
Thermostatic
mixing valve
Union
Check valve
Recirc pump
Aquastat
Potable
expansion
tank
Pressure
relief valve
Drip leg /
Sediment trap
see wiring detail
Section 4.3, page 11
DHW
Recirculation
Return
) as required by local code.
External Recirculation Pump:
Max pump amp draw: 5 amps
User defined recirc schedule set using built-in tankless controller
Pump is powered only during scheduled periods when inlet temperature
sensor is less than the set point temperature of the unit by a fixed
differential
See Section4.3, page 11 for specific temperature values
DISCLAIMER: This drawing is conceptual in nature, not to scale and for reference only. Additional functional, installation, and safety devices may be needed or
required. All work pertaining to the installation shall be in full compliance with all legal requirements, including national and local codes. Best installation practices
should be followed.
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