PENSOTTI PCH 18 Instruction Manual page 25

The standard flue components above are suitable for horizontal and vertical applications.
Maximum permissible equivalent flue lengths are;
Horizontal: 8 meters / 26 feet
Vertical: 8 meters / 26 feet
Any additional turns in the flue system must be taken into consideration.
Each elbow decreases the equivalent length as shown.
45° Elbow equals
90° Elbow equals
Horizontal venting systems: The 2/4 to 3.15/5 test port adapter and the first 90° elbow
are not included in the total equivalent length of the vent system.
Vertical venting systems: The vent termination is not included in the total equivalent
length of the vent system.
Horizontal venting systems must be sloped back towards the boiler at approximately ¼‟‟
per linear foot of vent.
Horizontal vent termination: must terminate a minimum of 7" from the face of the outside wall in
which it is installed.
Minimum distance between any two horizontal concentric vent terminations is 20" measured
from the inner edge of each termination.
Pitched Vertical Termination
INSTALLATION INSTRUCTIONS
.5 meters / 1.64 feet
.8 meters / 2.6 feet
21
Flat Vertical Termination