Harman® • PF-120 Installation Manual_R1 • 2014 -___ • 03/14
9
3-90-08121i
4
Termination Location and Vent Information
NOTE: Read and follow all of the vent pipe
manufacturers’ instructions on the proper installation
and support of the vent pipe. Adhere to all clearances.
NOTE: Use only 4” diameter “PL” venting system.
Be sure to inspect and clean exhaust venting system
regularly.
The minimum vent configuration is a 90° or Tee on a starter
collar and a 24” length horizontal through an exterior wall.
A cap or other bird screen on the end should direct the flue
gases down and away from the structure. Figure 4.1.
The maximum horizontal length is 18 feet. The minimum
termination height above the exterior grade is 18”. The
maximum total length of any configuration is 30 feet.
NOTE:
Cleanout Tee’s should always be used on the
transitions to horizontal pipe to allow easy access for
cleaning.
The venting configuration graph allows for (one) 90°. or Tee
fitting in any configuration.
If more 90’s, T’s, or 45’s are needed the total length must be
adjusted to allow for the added restriction.
Up to four (4) additional 90’s, Tee’s, or equivalent 45’s can be
added as long as the overall length is adjusted in accordance
with the values listed below.
(See the Venting Configuration Graph under Section B
“
Locating Your Appliance & Chimney”)
Each Vertical ----- 90° or T subtract 2.5 feet
Each Vertical ----- 45° subtract 1.5 feet
Each Horizontal - 90° or T subtract 5.0 feet
Each Horizontal - 45° subtract 2.5 feet
Any exterior venting (vent pipe exposed to outside
ambient temperatures) should be kept to a minimum,
due to potential condensation problems.
This is especially important in high humidity cold weather
climates, such as maritime areas, lake shores, and low river
valleys.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST
VENTING SYSTEM OF THIS UNIT.
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
INSTALL VENT wALL PASS-THROUGH AT CLEARANCES
SPECIFIED BY THE VENT MANUFACTURER.
NOTE: All installation clearances and restrictions must
be adhered to.
NOTE: Read and follow all of the vent pipe manufacturers’
instructions on the proper installation and support of the
vent pipe. Adhere to all clearances.
INSTALLATION IS TO BE PERFORMED BY A QUALIFIED
INSTALLER.
36”
4”
4” Type “PL”
Vent Pipe
This is the minimum venting configuration.
NOTE: This would only be allowed with non-combustible walls.
Figure 4.1
A. Vent Termination Minimum Clearances
KEEP COMBUSTIBLE MATERIALS SUCH AS GRASS,
LEAVES, ETC. AT LEAST 3 FEET AwAY FROM THE
POINT DIRECTLY UNDER THE VENT TERMINATION.
(BETwEEN THE VENT AND THE GROUND)
WARNING
!
KEEP COMBUSTIBLES AwAY FROM FLUE OUTLET.
CAUTION
!
WARNING
!
CHIMNEY AND FLUE PIPE MUST BE CLEAN AND IN
GOOD CONDITION.
