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Installation
Vent Configurations
Vent configurations can include vertical sections, horizontal sections, elbows, flex and/or rigid vent
sections. The maximum length of any vent run is 80'. Follow the rules outlined below to determine your
specific vent options. All venting is to be 5" inner and 8" outer sizing. Because this appliance intended to
only be installed with a power vent termination, vertical and horizontal runs can be calculated in the
same man
ne
r.
Flexible venting does not flow quite as well as rigid pipe, so a factor needs to be applied, making the total
allowable vent run shorter than rigid pipe.
* Not for rigid elbows used in between flex sections
Venting Calculation
Rigid Vent
Flex Venting
Maximum Vent Run - Rigid
80' total length
60' total length
90 degree elbow
subtract 10' each
* subtract 5' each
45 degree elbows
subtract 5' each
* subtract 2' each
Down sections
subtract 2' for every 1' down
subtract 2' for every 1' down
Flex Venting (if mixed with rigid)
Subtract 1.3' for every 1'
section
Section 6: Venting
Summary of Contents for MILAN II
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