Testing For Gas Leaks; Check The Operating Characteristics Of The Wall Mounted Gas Condensing Boiler; Final Steps; Inform The User - Bosch Condens 5000W Installation And Maintenance Instructions Manual

8.11

Testing for gas leaks

NOTICE:
Damage to wall mounted gas condensing boiler due to short-circuit.
▶ When using leak detection spray, cover the plug and cables.
▶ Start the flue gas inspector mode ( Chapter 7.3).
▶ As soon as the burner is on, check all gas-carrying components using
an approved gas leak detection spray.
▶ Check rubber gasket [1] at the ignition unit and the monitoring
electrode for tightness.
Fig. 50 Inspecting the gas path
▶ Determine the cause of a possible leak.
▶ Exit flue gas inspector mode.
8.12 Check the operating characteristics of the wall
mounted gas condensing boiler
▶ Freeze the connected control and check whether the wall mounted
gas condensing boiler starts burning after several minutes to support
the boiler operation.
▶ If applicable: open a DHW tap and check the DHW temperature and
DHW volume.
8.13

Final steps

▶ Fitting the casing.
▶ Complete the commissioning report.
8.14

Inform the user

▶ Familiarise the user with the heating system and operation of the wall
mounted gas condensing boiler.
▶ Explain to the user how the heating system must be filled.
▶ Point out to the user that he must not carry out conversions, repairs
or maintenance himself.
▶ Fill out the commissioning report to confirm commissioning
( Chapter 8.15).
▶ Hand the technical documentation to the user.
8.15

Commissioning report

▶ Sign all completed commissioning work and enter the date.
Condens 5000W – 6720813952 (2019/02)
1
0010010037-001
Commissioning steps
1. Filling and venting the heating
system.
• Expansion vessel pre-
charge pressure(observe
the installation instructions
for the expansion vessel)
• Heating system fill pressure
2. Check gas type against the data
plate.
3. Vent the gas line.
4. Check the combustion air/flue
gas connection.
5. Adjusting the wall mounted gas
condensing boiler:
• Adjust the output
• Adjust the flow temperature
• Setting pump run-on time
6. Measure the gas supply
pressure.
7. Measure gas/air ratio.
8. Measure the CO content.
2
9. Check the gas tightness.
10. Check the flue gas tightness.
11. Check the function of the wall
mounted gas condensing
boiler.
12. Fitting the casing.
13. Instruct the user, hand over
technical documentation.
Confirm professional commissioning:
Table 12 Commissioning report
9

Shutdown

9.1

Standard shutdown

▶ Take the wall mounted gas condensing boiler out of operation via the
ON/OFF switch.
▶ Close gas isolation valve.
▶ Close the service valves.
9.2

Shutting down when there is a risk of frost

If the wall mounted gas condensing boiler stays on:
▶ Set the pump overrun time to 24 hours ( Chapter 7.2 "Setup
menu").
▶ Make sure that a sufficient flow is possible at all radiators.
If the wall mounted gas condensing boiler is switched off:
▶ Take the wall mounted gas condensing boiler out of operation via the
ON/OFF switch.
▶ Close gas isolation valve.
▶ Drain the entire heating system.
▶ If installed, drain the entire potable water system.
Shutdown
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8.13 
8.14 
Company stamp/
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