Service Mode; Gas Supply With Propane Gas; Setting The Device; Access To The Pressure Test Ports - Bosch Therm 4000 S Installation And Operating Instructions Manual

7.2

Service mode

To call up the service mode
▶ Press the , and
hold them down for 3 seconds.
Fig. 19 Service mode
The display shows "P2".
Service mode is activated.
7.3

Gas supply with propane gas

▶ Call up Service mode ( Section 7.2).
The display shows "P2".
▶ Press until the display shows "P7".
▶ Press the key.
The display shows "30".
▶ Press the key, until the display shows "31".
▶ Press the key.
The setting for propane gas is completed.
7.4

Setting the device

When setting, always start with "P1" and
then continue with "P2".

7.4.1 Access to the pressure test ports

▶ Remove the casing of the device (see 25).
Therm 4000 S – 6 720 815 298 (2017/05)
keys simultaneously and
Gas regulating (only for approved contractors)
A
Fig. 20
[A] Test port for air pressure in the casing
[B] Test port for gas pressure in the burner

7.4.2 Setting the maximum gas volume (parameter P1)

▶ Switch the device in with the ON/OFF key.
▶ Release the sealing screw on the test port [B].
▶ Connect the pressure gauge to the test port ("+").
▶ Release the sealing screw on the test port [A].
▶ Connect the pressure gauge ("-") to the test port [A].
▶ Release the sealing screw on the test port [B].
▶ Connect the pressure gauge ("+") to the test port [B].
▶ Press until the display shows "P1".
▶ Press the key.
The display shows "E".
▶ Press until the display shows "L1".
▶ Press the key.
The maximum gas volume can be set at the device.
▶ Open one hot water tap.
▶ Press or , until the pressure gauge displays the
value given in Tab. 17.
If the value cannot be reached:
▶ Adjust the burner pressure (Section
7.4.4) and repeat the setting
procedure.
▶ Hold down for 3 seconds.
The value flashes as confirmation.
▶ Press the key.
The display shows "L1".
▶ Close the hot water tap.
▶ Press until the display shows "E".
+
-
6720804089-11.1V
B
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