Wolf COB-2 - Check that the Flue Cascade Dampers Are Free of Leaks

Commissioning
3066501_201910 WOLF GmbH | 55
6.8.3 Checkthattheuecascadedampersarefreeofleaks
DANGER
Escapeofuegases!
Risk of asphyxiation or severe to life-threatening poisoning.
► The ue cascade dampers must be checked for leaks once a year in positive pressure systems.
1
2
Fig. 6.7 Flue cascade
q Check for leaks on adjacent appliances w Check rst heat generator for leaks
Check for leaks on adjacent appliances (1)
► Switch the second, third and fourth heat generator to standby:
– Select the heating circuit status page in the BM-2 programming unit.
– Select the rotary selector icon and switch to Standby.
✔ The heat generators will switch to standby mode.
► Press the emissions test quick start button to turn the rst COB-2 on.
✔ COB-2 turns on.
► Wait for at least 5 minutes.
► Measure the CO
2
level for the second, third and fourth heat generator:
– Remove cap from inlet air test port.
– Insert test probe 2 cm.
– Measure CO
2
value.
CO
2
value exceeds 0.2% in the rst 15 minutes, there is a leak in the ue system.
► Find and x the leak.
► Measure the CO
2
level again.
CO
2
level remains below 0.2%, no leak in the ue system:
► End emissions test mode
✔ The heat generator shuts down.
► Close the test ports. When doing so, ensure the caps are seated rmly!
Checkrstheatgeneratorforleaks(2)
► Press the emissions test quick start button to turn the second COB-2 on.
✔ COB-2 turns on.
► Wait for at least 5 minutes.
► Measure the CO
2
level for the rst heat generator:
– Remove cap from inlet air test port.
– Insert test probe 2 cm.
– Measure CO
2
value.
CO
2
value exceeds 0.2% in the rst 15 minutes, there is a leak in the ue system.