Wolf CGB-2-24 - Page 76

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37.Technicalinformation,air/uegas
routing
Tightnessteston
connectionsto
adjacentappliances
As part of the annual boiler test, the cascade damper on overpressure boiler systems
must be tested for tightness, to ensure no CO
2
can escape into the boiler room (risk
of poisoning or asphyxiation).
The check must be carried out with the appliance closed.
We recommend proceeding as follows:
Tightnesstestonconnectionstoadjacentappliances
- Select the mixer circuit via the right hand rotary selector. Press function key 3 and
usetherotaryselectortoselect"Standby",thenpresstoconrm.Repeatprocess
for "DHW".
- Then,ontherstCGB-2,understatusdisplay"Heatingappliance",
press quick start key 3 to activate the "Emissions test" è
CGB-2 starts.
- OperatetherstCGB-2foratleast5minutes.
- Check the CO
2
content in the air connectors on all other appliances.
- If the CO
2
value exceeds 0.2 % within 15 minutes, the leak must be found and
remedied.
- Subsequently close all test ports again. When doing so, ensure the caps are
seatedrmly.
TestingtherstCGB-2fortightness
- ShutdowntherstCGB-2viafunctionkey4è
Emissions test is disabled.
- On the second CGB-2, press quick start key 3 under status display "Heating
appliance" to enable the emissions test è CGB-2 starts.
- Operate the second CGB-2 for at least 5 minutes.
- Check the CO
2
contentintheairconnectorontherstCGB-2.
- If the CO
2
value exceeds 0.2 % within 15 minutes, the leak must be found and
remedied.
- Subsequently close all test ports again. When doing so, ensure the caps are
seatedrmly.
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