Bosch Greentherm T9900 SE/i 199 - Water Valves Calibration; Gas Type

Operation instructions
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
52
ML Model
▶ Touch the symbol .
Display shows appliance model.
– Indoor
▶ Touch the symbol to exit.
▶ Touch symbols or to scroll through other menus.
TP Type
▶ Touch the symbol .
Display shows appliance model.
– Residential
▶ Touch the symbol to exit.
AB Region Selection
▶ Touch the symbol .
Display shows following menu.
– Europe
– North America
A4 Demonstration
Simulates in the display, the appliance is functioning.
(Only available when burner is not working)
6.7 Water valves calibration
Water valve calibration must be done when main water valve or
bypass valve is replaced. Also required when electronic control
unit is replaced.
The water valve calibration process takes several minutes.
▶ Do not interfere with the appliance.
Only possible after access Technical Settings menu (
section 6.6).
6.7.1 MF main water valve auto calibration
▶ Open one hot water tap.
Before moving to the next step:
▶ make sure there is water flow.
▶ Access menu PA.
▶ Touch symbol OK.
▶ Touch symbols or to select MF main valve.
▶ Touch symbol OK.
The appliance will start the auto calibration of main valve.
Water flow will shut-off.
▶ Wait until indication of calibration completed appears on
the screen.
▶ Touch the symbol to return to main menu.
6.7.2 BP bypass valve auto calibration
▶ Open one hot water tap.
Flow rate between 0.80 GPM and 1.80 GPM is required.
It's possible to confirm this value by entering BP bypass
water valve menu.
▶ Access menu PA.
▶ Touch symbol OK.
▶ Touch symbols or to select BP bypass water
valve.
▶ Touch symbol OK.
The appliance will start the auto calibration of the bypass
valve.
The display shows the flow rate.
▶ You should adjust the flow rate at the beginning of the
calibration process.
▶ Wait for the indication that the calibration is completed to
appear on the screen.
▶ Touch the symbol to return to main menu.
6.8 Gas type
Only possible after access Technical Settings menu.
▶ Access to menu P7 Gas Type.
Display shows appliance gas type.
▶ Use the symbols or to confirm gas type.
WARNING:
The gas type conversion must only be carried out by a qualified
contractor.