IBC DC 33-124 - Page 55

3-5
STARTUP AND COMMISSIONING
DC SERIES COMBI BOILERS DC 23-84, DC 29-106, DC 33-124, DC 33-160
Figure 36: Blower and Gas Valve Assembly
Figure 37: Orice and O-ring
WARNING
Fan Outlet Orice (25mm)
must be installed in the DC
23-84 model. If the fan is
being replaced the orice
must be reinstalled in the new
fan.
WARNING
Each DC series boiler is
equipped with a Back Flow
Valve installed at the outlet
of the fan. Inspect the Back
Flow Valve annually.