Pipe Connections - Biasi Riva Combi Installation & Operation Instructions

This kit allows vertical termination of the flue pipe through the roof. The kit is 1.2 min
length. Extension pieces (Co--axial) are also available which allows the flue system to be
extended to a total overall maximum permissible length.
Optional 45° and 90° elbows can be used to offset the flue route.
Each additional elbow reduces the overall acceptable length of the flue system as follows:
45° reduce length by 1.6 ft.
90° reduce length by 3.2 ft.
Installation:
•
Drill hole through the outside roof.
•
Cut the pipe as necessary.
•
Slide the intake and exhaust pipes through the hole.
•
Slide one rubber wall trim piece on the pipe from inside and one from outside.
•
Connect exhaust (inner) pipe to concentric elbow.
•
Connect intake (outer) pipe to concentric elbow.
•
Secure elbow to boiler using gasket and four screws provided.
•
Secure end cap on the intake pipe outside the house.

10. Pipe Connections

The Riva boiler is supplied with a 3/4" stainless steel gas pipe (A in figure 10.1), 4 - 3/4"
copper pipe (C,D,J,K in figure 10.1), 2 - 1/2" copper pipe (E,H in figure 10.1), located in a
RIVA COMBI MANUAL - REV B
Figure 9.8 (vertical pipe Φ 3.1 / Φ 4.9 in)
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