Biasi Riva Plus Installation & Operation Instructions page 23

Wall hung gas boiler for central heating supply

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9. Venting Cont.

Standard Vertical-roof kit (Exhaust & intake outside)

This kit allows vertical termination of the ﬂ ue pipe through the roof. The kit is 1.2 min

length. Extension pieces (Co--axial) are also available which allows the ﬂ ue system to

be extended to a total overall maximum permissible length.

Optional 45° and 90° elbows can be used to offset the ﬂ ue route.

Each additional elbow reduces the overall acceptable length of the ﬂ ue system as fol-

lows:

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.

RIVA PLUS MANUAL

Figure 8.4 (vertical pipe  3.1 /  4.9 in)

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