Harman®  •  P42i Pellet Insert Installation Manual  •  2023 -___  •  08/236 8742-901D
A
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Design and Installation Considerations
1. Appliance Location
NOTICE: Check building codes prior to installation.
• InstallationMUSTcomplywithlocal,regional,stateand
national codes and regulations.
• Consult insurance carrier, local building inspector, re
ocialsorauthoritieshavingjurisdictionoverrestrictions,
installation inspection and permits.
Itisagoodideatoplanyourinstallationonpaper,usingexact
measurementsfor clearances andoorprotection, before
actually beginning the installation
Considerationmustbegivento:
• Safety,convenience,tracow
•  Placement of the chimney and chimney connector. 
• If you are not using an existing chimney, place the
appliance where there will be a clear passage for a 
factory-builtlistedchimneythroughtheceilingandroof.
• Installing an optional outside air kit would aect the
location of the vent termination.
Suitable replaces for installation:
• MasonryFireplace
• ExistingFactoryBuiltWoodBurningFireplace
• Harman®ZeroClearanceCabinet-Part#1-00-574323
EXCEPTION:Masonryorsteel,includingthedamperplate,
may be removed from the smoke shelf and adjacent damper 
frame if necessary to accommodate a chimney liner,
Marginal Location:
•  Below peak
Location NOT recommended:
•  Not the highest point of the roof
•  Wind loading possible
Multi-level Roofs
Windward 
Leeward
Recommended:
Outside Air Intake
on windward side
NOT recommended:
Outside Air Intake
on leeward side
Recommended Location:
•  Above peak
Recommended:
•  Insulated exterior chase 
in cooler climates
Recommended Location:
•  Above peak
•  Inside heated space
Location NOT recommended:
•  Too close to tree
•  Below adjacent structure
•  Lower roof line
•  Avoid outside wall
Marginal Location:
•  Wind loading possible
Figure 2.1
2 2 
Getting Started 
provided that their removal will not weaken the structure of 
the replace and chimney, and will not reduce protection
for combustible materials to less than that required by the 
National Building Code.
Sincepelletexhaust cancontainash,sootorsparks,you
mustconsiderthelocationof:
• Windows
• AirIntakes
•  Air Conditioner
• Overhangs,sots,porchroofs,adjacentwalls
• Landscaping,vegetation
When locating vent and venting termination, vent above 
roof line when possible.
Warning! Risk of Fire Damaged parts could impair safe 
operation. Do NOT install damaged, incomplete or substitute 
components.
NOTICE: Locating the appliance in a location of considerable 
air movement can cause intermittent smoke spillage from 
appliance. Do not locate appliance near:
•  Frequently open doors
•  Central heat outlets or returns
Installation and service of this
appliance should be performed by 
qualiedpersonnel.Hearth&Home
Technologies recommends HHT
Factory Trained or NFI Certied
professionals.