Biasi Riva Advance Combi Installation & Operation Instructions page 23

9. Venting Cont.
G PVC boiler adapter - Part# RI-99909120
This kit is required to vent the Riva Advance Combi boiler using PVC/CPVC pipe. The kit
includes a boiler connection adapted for PVC/CPVC. When venting with PVC/CPVC this boiler
adapter is required in addition to one of the terminations on the following pages.
Canada: All PVC/CPVC pipe, fittings, and cement must be approved to ULC S636. Do
not mix pipe and joining compounds from different manufacturers as this can
result in an unsafe condition and void the certification.
Installation:
• Attach the collar (C) from the adapter kit to the top of the boiler using the supplied screws.
• Insert the boiler adapter (B) into the collar. Check that the exhaust gasket (D) is installed on
the outlet of the boiler first.
• Once the adapter is positioned in place, tighten the clamp on the collar and install the
supplied self tapping screw through the pre drilled hole on the collar.
• Insert the PVC adapters (A) into the boiler adapter (B).
• Slide the CPVC/PVC pipe into the PVC adapters (A), do not use any solvents or cement
on this connection. It is a gasket connection that requires no sealing. If polypropylene pipe
is being used, remove the PVC adapter A from the boiler adapter. Insert the polypropylene
pipe into the boiler adapter and use the PVC adapter in the end of the polypropylene pipe
to convert to PVC.
23 RIVA ADVANCE COMBI MANUAL
Figure 9.6
A
B
C
D