Measurement Guide

Application Manual Greentherm T9800/9900 SE/SEO/SEi | 19
Bosch Thermotechnology Corp. | 12.2019
Data subject to change
4.5 Multi-Unit Cascading
Cascading up to 24 appliances is possible with the Greentherm 9000 models, using
the accessory Intelligent Cascading Kit 7709003962.
Legend
Full-port
ball valve
Union
Check valve
Potable
expansion
tank
Pressure
relief valve
Intelligent Cascading Kit
(part# 7 709 003 962)
To drain
or pump
Gas
NBT-23
Condensate
Neutralizer )
(part# 7 738 005 514
)
Cold
Water
Supply
Hot
Water
Supply
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.
Appliance controlled recirculation cannot be activated simultaneously
with cascading. If cascading mode is activated and you activate
recirculation, the cascading mode will turn off, and vice-versa.
Both direct return and reverse return piping are acceptable plumbing
design options.