Wolf FGB-28 - Page 83

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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".
- On the rst FGB, press and hold buttons 6 and 7 simultaneously for 5 seconds to
enable the emissions test mode for the boiler. è FGB- starts.
- Operate the rst FGB- for at least 5 minutes.
- On all other appliances, check the CO
2
content in the air connector:
- 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FGBfortightness
- Press reset button 4 to return the rst FGB into the previous operating mode è
emissions test mode is disabled. Press the operating mode button repeatedly until
the display shows "OFF". The boiler shuts down (standby mode).
- On the second FGB, press and hold buttons 6 and 7 simultaneously for 5 seconds
to enable the emissions test mode for the boiler. è FGB- starts.
- Operate the second FGB for at least 5 minutes.
- Check the CO
2
content in the air connector on the rst FGB.
- 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.
31.Technicalinformation,balancedue