Masport Piccolo Installation Instructions Manual page 42

VENTING ARRANGEMENTS
Horizontal Terminations for All Venting Systems
The shaded areas in the diagram below show all allowable
combinations of vertical runs with horizontal terminations.
Maximum one 90° elbow (two 45° elbows equal one 90°
elbow).
Vent Restrictor Position
To set the Vent restriction as indicated in the diagram, simply
loosen the screws and push the vent restrictor plate to the
correct position.
Vent Restrictor is located inside fire at top of firebox
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The shaded area in the diagram below shows all allowable combinations
of straight vertical and offset to vertical runs with vertical terminations.
Maximum two 45° elbows.
If the vent is ENCLOSED in a chase (min. size 229mm x 229mm) maintain a 40mm
clearance to combustibles.