Wood Stove
Use & Care Video
Owner's Manual
Installation and Operation
Model:
300i Woodburning Fireplace Insert
Contact your local dealer with questions on installation,
operation or service.
Please read this entire manual before you install and use your new wood burning insert. Failure to follow instructions
may result in property damage, bodily injury, or even death.
NOTICE
DO NOT DISCARD THIS MANUAL
• Important operating and • Read, understand and
maintenance instructions
included.
!
follow these instructions
for safe installation and
operation.
WARNING
Please read this entire manual before
installation and use of this wood-burning
room heater.
Failure to follow these instructions could
result in property damage, bodily injury
or even death.
• Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
• Do not overfire - If any external part starts to glow,
you are overfiring. Close air controls. Overfiring will
void your warranty.
• Comply with all minimum clearances to combustibles
as specified. Failure to comply may cause a house
fire.
!
CAUTION
CHECK BUILDING CODES PRIOR TO INSTALLATION.
• INSTALLATION MUST COMPLY WITH LOCAL, REGIONAL,
STATE AND NATIONAL CODES AND REGULATIONS.
• CONSULT LOCAL BUILDING, FIRE OFFICIALS OR
A U T H O R I T I E S H AV I N G J U R I S D I C T I O N A B O U T
RESTRICTIONS, INSTALLATION INSPECTION, AND
PERMITS.
• Leave this manual with
party responsible for use
and operation.
!
Do
Dis Not
car
d
WARNING
HOT SURFACES!
Glass and other surfaces
are hot during operation
AND cool down.
Hot, will cause burns.
• Do not touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room
as fireplace.
• Alert children and adults to hazards of high
temperatures.
High temperatures may ignite clothing or other
flammable materials.
• Keep clothing, furniture, draperies and other
flammable materials away.
!
CAUTION
TESTED AND APPROVED FOR USE WITH DRY,
SEASONED CORDWOOD ONLY. DO NOT BURN WET
OR GREEN WOOD. BURNING ANY OTHER TYPE OF
FUEL WILL VOID YOUR WARRANTY.
To obtain a French translation of this manual, please contact your dealer or visit www.harmanstoves.com
Pour obtenir une traduction française de ce manuel, s’il vous plaît contacter votre revendeur ou visitez www.harmanstoves.com
1
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Read this manual before operating this appliance.
Please retain this Owner’s Manual for future reference.
Read the Installation Manual before making any installation or finishing changes.
Congratulations, The Harman® 300i Woodburning Fireplace
Insert you have selected is designed to provide the utmost
in safety, reliability, and efficiency.
This owner’s manual should be retained for future reference.
We suggest that you keep it with your other important
documents and product manuals.
As the owner of a new Wood Insert, you’ll want to read and
carefully follow all of the instructions contained in this owner’s
manual. Pay special attention to all cautions and warnings.
Your new Harman® 300i Woodburning Fireplace Insert will
give you years of durable use and trouble-free enjoyment.
Welcome to the Harman® family!
Listing Label Information/Location
Serial Number
Model Name
MODEL / MODÈLE: “300i” Woodburning Fireplace Insert
Room Heater Solid Fuel Burning Type
Report #/Rapport #135-S-18-6, #135-S-18b-6.2
Tested to/Testé selon: UL 1482-2010, UL 737-2007, and ULC-S628-93, EPA Method 28
& 5G
Certified for U.S.A. and Canada/Certifié pour les états-Unis et le Canada
Not approved For Use in Mobile/Manufactured Homes
“PREVENT HOUSE FIRES” Install and use only in accordance with manufacturer’s
installation and operation instructions and local codes. In absence of local codes, installation
must meet minimum requirements of NFPA 211 in USA. Refer to manufacturer’s instructions
and local codes for precautions required for passing chimney through a combustible wall or
ceiling.
This wood heater needs periodic inspection and repair for proper operation. Consult the
owner’s manual for further information. It is against federal regulations to operate this wood
heater in a manner inconsistent with the operating instructions in the owner’s manual.
Flue connector pipe must be 6” diameter, minimum 24 MSG blue steel. Chimney must be
factory built 103HT or masonry construction. Contact Local Building or Fire Officials about
restrictions and installation inspection in your area.
DO NOT CONNECT THIS APPLIANCE TO A CHIMNEY SERVING ANOTHER APPLIANCE.
FOR USE WITH SOLID WOOD FUEL ONLy, DO NOT BURN COAL.
EPA Certified Emissions: 1.1 g/hr
Fuel Type: Cord Wood
DO NOT Overfire - If Heater or chimney connector glows, you are overfiring.
Electrical Rating 115 VAC, 60Hz, 1AMP Maximum
Route power cord away from unit.
OPERATE ONLy WITH DOORS CLOSED
Replace glass only with 5mm ceramic, available from your dealer.
Do not obstruct airflow under the appliance.
DANGER: Risk of Fire or Explosion - Do not burn garbage, gasoline, drain oil or other
flammable liquids.
WARNING: Risk of Fire, Do not operate with fuel loading or ash removal doors open.
Do not store fuel or combustibles within marked clearances. Inspect and clean
chimney and connector regularly - Under certain conditions of use, creosote buildup
may occur rapidly.
The Bypass Damper must be opened prior to opening any load or ash door.
Do not install a grate or otherwise elevate the fire.
Inches Millimeters
location
A Insert to combustible sidwall
29.6
762
b Insert side to face trime
13.6
345
C Insert top to (max) 12” Mantel
30
762
D Insert top to face trim
20
508
Serial No.
No de série:
008
BARCODE LABEL
Non approuvé pour utilisation dans portables / Manufactured Homes
“Empêcher MAISON incendies” Installer et utiliser uniquement en conformité avec installation et
d’utilisation les instructions du fabricant et les codes locaux. En l’absence de codes locaux, l’installation
doit satisfaire aux exigences minimales de la norme NFPA 211 aux Etats-Unis. Reportez-vous aux
instructions du fabricant et les codes locaux pour les précautions nécessaires pour faire passer la
cheminée à travers un mur ou un plafond combustible.
Ce poêle à bois doit inspection périodique et la réparation pour un fonctionnement correct. Consultez
le manuel du propriétaire pour plus d’informations. Ce est contre les règlements fédéraux pour faire
fonctionner ce poêle à bois d’une manière incompatible avec les instructions d’utilisation dans le
manuel du propriétaire.
Tuyau de raccordement de fumée doit être de 6 “de diamètre, en acier au minimum 24 MSG bleu.
Cheminée doit être construite l’usine 103HT ou la construction de maçonnerie. Contactez Immeuble
Local ou fonctionnaires incendie au sujet des restrictions et l’inspection d’installation dans votre région.
NE PAS brancher l’appareil à une cheminée desservant un autre APPAREIL.
Pour une utilisation avec Solid combustible bois Seulement, Ne pas brûler de charbon.
Émissions certifiés EPA: 1,1 g / h
Type de carburant: Cordon bois
NE SURCHAUFFEZ - Si le connecteur chauffe ou de la cheminée rougeoie, vous surchauffez.
Note électrique 115 VAC, 60Hz, 1AMP maximum
Route cordon électrique de l’appareil.
Fonctionner uniquement avec les portes fermées
Remplacer le verre seulement avec de la céramique 5mm, disponible chez votre revendeur.
Ne pas obstruer le flux d’air sous l’appareil.
DANGER: risque d’incendie ou d’explosion - Ne pas brûler de déchets, de l’essence, vidanger
l’huile ou d’autres liquides inflammables.
AVERTISSEMENT: Risque d’incendie, ne pas fonctionner avec chargement de combustible ou
d’enlèvement de cendres portes ouvertes.
Ne pas stocker carburants ou de combustibles dans les dégagements marqués. Inspectez
et cheminée propre et le connecteur régulièrement - Dans certaines conditions d’utilisation,
l’accumulation de créosote peut se produire rapidement.
Le Bypass amortisseur doit être ouvert avant d’ouvrir ne importe quelle porte de charge ou
de la cendre.
Ne pas installer une grille ou autrement surélever le feu.
DO NOT REMOVE THIS LABEL / Ne pas enlever cette étiquette
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIAL
ECARTS MINIMUM DE SÉCURITÉ
The model information regarding your specific stove can be found on the
rating plate usually located in the control area of the stove.
The Safety/ Certification label is attached by a chain under the ash
lip. The label includes the appliance serial number and important
safety information. Record the number here for future reference.
Serial #: 008_______________________
Purchase Date: _____________________
Non-combustible floor protector / La protection de sol doit
être constituée de matériau incombustible
Inches Millimeters
location
Window opening to front
18
450
Window opening to side
8
200
Floor Protection must be a minimum R= 2.02
See Manufacturer’s instructions for additional floor protection
guidelines.
Made in U.S.A. of US and imported parts. / Fabriqué
aux États-Unis-d’Amérique par des pièces d’origine
américaine et pièces importées.
C
B
A
US ENVIRONMENTAL PROTECTION AGENCY
Certified to comply with 2015 particulate emission
standards. Not approved for sale after May 15, 2020.
Certifié conforme aux normes 2015 d’émission de
particules. Non approuvé pour la vente après le 15 mai 2020.
8” / 200 mm
18” / 450 mm
8” / 200 mm
D
Floor Protector / Protecteur de plancher
CAUTION:
HOT wHIle IN OperATION. DO NOT TOUCH.
Keep CHIlDreN AND ClOTHINg AwAy. CONTACT mAy CAUse sKIN
bUrNs. see NAmeplATe AND INsTrUCTIONs. Keep fUrNIsHINgs
AND OTHer COmbUsTIble mATerIAls A CONsIDerAble DIsTANCe
AwAy frOm THIs ApplIANCe.
ATTeNTION:
CHAUD lOrs DU fONCTIONNemeNT. Ne
TOUCHeZ pAs l’AppAreIl.gArDeZ les eNfANTs eT les VÊTemeNTs ÉlOIgNÉs.
TOUT CONTACT peUT eNTrAÎNer Des brÛlUres De lA peAU. rÉfÉreZ-VOUs À
lA plAQUe sIgNAlÉTIQUe eT AU mODe D’emplOI. gArDeZ le mObIlIer eT les
AUTres mATÉrIAUX COmbUsTIbles bIeN À l’ÉCArT De l’AppAreIl.
Date of Manufacture / Date de fabrication:
2015 2016 2017 JAN feb mAr Apr mAy JUN JUl AUg sep OCT NOV DeC
P.N. 3-90-300100
Manufactured by / Fabriqué par: Hearth and Home Technologies 352 Mountain House Road, Halifax PA 17032
Rev D
LAbEL tICkEt
ECO:
CLASS:
PARt # / REv: 3-90-300100_RevD
ADHESIvE:
468
ORIgInAtOR: Spidle
MAtERIAL:
MEtAL
DAtE: 04/15
Ink:
LAbEL SIzE:
6.75 in. x 10.5 in.
bLACk
OvERCOAt:
LOCAtIOn:
(1) Hole Size = .25
Corner Radius = .25
352 Mountain House Road
Halifax, PA 17032
2
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Table of Contents
Product Specifications and Safety Information. . . . . . . . . . 4
Fire Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Component Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Appliance Dimensions Diagram. . . . . . . . . . . . . . . . . . . . . . 6
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Floor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Masonry Fireplace Requirements . . . . . . . . . . . . . . . . . . 8-9
Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flue Liner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Slide Assist Rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Handle Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Distribution Blower Installation. . . . . . . . . . . . . . . . . . . . . . 12
Surround Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Draft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Andirons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Paint Curing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
The Combustion Process. . . . . . . . . . . . . . . . . . . . . . . 14-15
Damper Bypass Operation. . . . . . . . . . . . . . . . . . . . . . . . . 15
Air Control Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 15-16
Overfiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Building & Maintaining a Fire. . . . . . . . . . . . . . . . . . . . . . . 17
Blower Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Surface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fire chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chimney System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
18
18
18
18
18
19
19
21
25
27
 = Contains updated information
! Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Used to address practices not related to personal injury.
3
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
Harman 300i Wood Insert
Product Specific and Safety Information
MODEL:
300i Woodburning Fireplace Insert
EPA Certification Number:
686
LABORATORY:
OMNI Test Laboratories, Inc
EPA Certified Emissions:
1.1 g/hr
REPORT NO.
135-S-18b-6.2
*LHV Tested Efficiency:
83.3%
TYPE:
Solid Fuel Room Heater / Wood
Burning Type
**HHV tested Efficiency:
77%
STANDARD(s):
UL 1482-2010, UL 737-2007,
ULC-S628-93, EPA Method 28 & 5G
***EPA BTU Output:
11,200 - 34,900
****Peak BTU/Hour Output:
72,100
ELECTRICAL
RATING:
115 VAC, 60 Hz
The 300i Wood Fireplace Insert is Certified
to comply with 2015 particulate emission
standards. Not approved for sale after May
15, 2020.
Other Important Information
Vent Size:
6 Inch (152 mm)
Firebox Size:
3.0 cu. ft.
Max. Wood Length:
20" Maximum
Ideal Wood Lenght:
18"
Fuel
Seasoned Cordwood
(20% moisture)
*Heating capacity is a guideline and may differ based
on climate, building construction and condition, as well
as other variables.
*Weighted average LHV (Low Heating Value) efficiency
using Douglas Fir dimensional lumber and data collected
during EPA emission test.
Illustrations Not To Scale
**Weighted average HHV (High Heating Value) efficiency
using Douglas Fir dimensional lumber and data collected
during EPA emission test.
NOT FOR USE IN MOBILE HOMES.
FOR USE IN THE U.S. AND CANADA
SAFETY NOTICE: IF THIS WOOD INSERT IS NOT
PROPERLY INSTALLED, A HOUSE FIRE MAY RESULT.
FOR YOUR SAFETY, FOLLOW THE INSTALLATION
DIRECTIONS. CONTACT LOCAL BUILDING OR FIRE
OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION
INSPECTION REQUIREMENTS IN YOUR AREA.
This wood heater needs periodic inspection and repair for
proper operation. It is against federal regulations to operate
this wood heater in a manner inconsistent with operating
instructions in this manual.
!
WARNING
DO NOT BURN GARBAGE OR FLAMMABLE FLUIDS
SUCH AS GASOLINE, NAPTHA, OR ENGINE OIL.
!
WARNING
THIS WOOD HEATER HAS A MANUFACTURER-SET
MINIMUM LOW BURN RATE THAT MUST NOT BE
ALTERED. IT IS AGAINST FEDERAL REGULATIONS
TO ALTER THIS SETTING OR OTHERWISE OPERATE
THIS WOOD HEATER IN A MANNER INCONSISTENT
WITH OPERATING INSTRUCTIONS IN THIS MANUAL.
4
***A range of BTU outputs based on EPA Default Efficiency
and the burn rates from the low and high EPA tests, using
Douglas Fir dimensional lumber.
****A peak BTU out of the appliance calculated using the
maximum first hour burn rate from the High EPA Test and
the BTU content of cord wood (8600) times the efficiency.
This wood heater needs periodic inspection and repair for
proper operation. It is against federal regulations to operate
this wood heater in a manner inconsistent with operating
instructions in this manual.
!
WARNING
B U R N I N G C O L O R E D PA P E R , C A R D B O A R D ,
SOLVENTS, TRASH AND GARBAGE OR ALTERING
THE STOVE FOR HIGHER HEAT OUTPUT MAY CAUSE
DAMAGE TO THE STOVE AND COULD RESULT IN
A HOUSE FIRE. USE ONLY APPROVED FUELS AND
FOLLOW ONLY THESE OPERATION GUIDELINES.
!
WARNING
NEVER USE GASOLINE, GASOLINE-TYPE LANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID, OR
SIMILAR LIQUIDS TO START OR 'FRESHEN UP' A FIRE
IN THIS HEATER. KEEP ALL SUCH LIQUIDS WELL
AWAY FROM THE HEATER, WHILE IN USE.
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Fire Safety
Maintain the designated clearances to combustibles.
Insulation must not touch the chimney. You must maintain
the designated air space around the chimney. This space
around a chimney is necessary to allow natural heat
removal from the area. Insulation in this space will cause a
heat buildup, which may ignite wood framing.
NOTE: Clearances may only be reduced by means
approved by the regulatory authority having jurisdiction.
To provide reasonable fire safety, the following should be
given serious consideration:
1. Install at least one smoke detector on each floor of your
home. Detectors should be located away from the heating
appliance and close to sleeping areas. Follow the smoke
detector manufacturer's placement and installation
instructions, and be sure to maintain regularly.
Carbon monoxide, referred to as CO, is a colorless, odorless
gas that is produced during combustion of wood and other
fuels. CO fumes are toxic and can be fatal.
The 300i Fireplace Woodburning Insert is a natural draft
system which relies on a properly designed chimney to
remove CO and other combustion by-products from the stove.
Even though this stove is designed to be as safe as possible,
it is important that you install a CO detector. This is true for
oil, gas, or coal burning products as well.
CO is not specifically heavier or lighter than air. Therefore,
it is best to install the detector at table top level rather than
on the ceiling like a smoke detector.
CO detectors are very sensitive and may sound an alarm
for fumes other than CO or CO from sources other than the
stove such as car or lawn mower exhaust.
2. A conveniently located Class A fire extinguisher to
contend with small fires resulting from burning embers.
If the alarm sounds
3. A practiced evacuation plan, consisting of at least two
escape routes.
2. Make sure the stove doors and lid are closed and latched.
4. A plan to deal with a chimney fire as follows:
In the event of a chimney fire:
a. Evacuate the house immediately.
b. Notify Fire Department.
c. Never apply water to a suspected chimney fire.
Serious damage could occur.
Installation and service of this
appliance should be performed by
qualified personnel. Hearth & Home
Technologies recommends HHT
Factory Trained or NFI Certified
professionals.
5
1.Increase ventilation by opening windows or doors.
3.Check stove for smoking or puffing condition. Open bypass and increase air-flow to firebox, if needed.
4.Check chimney for possible blockage or down-draft.
5.Check for false alarm.
SAFETY NOTICE: IF THIS APPLIANCE IS NOT PROPERLY
INSTALLED, OPERATED AND MAINTAINED, A HOUSE
FIRE MAY RESULT. FOR YOUR SAFETY, FOLLOW
INSTALLATION DIRECTIONS. CONTACT LOCAL
BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS
AND INSTALLATION INSPECTION REQUIREMENTS IN
YOUR AREA.
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Component Locations
Surround Top
Flue pipe adapter
Viewing Glass
Door Latch
Air Control Lever
Bypass Damper
Control
Andirons
Surround Side
17-5/8"
447mm
Appliance Dimension Diagram
Dimensions are actual appliance dimensions. Use for reference only.
28"
711mm
23-3/4"
603mm
41" / 1042mm
30"
762mm
5-1/8"
129mm
28-1/2"
724mm
12-1/2"
318mm
17-5/8"
447mm
12-1/2"
318mm
40" / 1016mm
6
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Installation
Fireplace/Opening Requirements; Masonry fireplace
ONLY.
Dimension
Inches
Millimeters
A Minimum Width
28-1/2
724
B Minimum Depth
18
457
C Minimum Height*
24
610
D Minimum Hearth Height**
6
152
12-1/2
318
E Minimum Hearth Depth
Floor protection in front of the raised hearth must be a
minimum 3/8" (9.5mm) of 0.84k material. An R value of 0.45
or higher is also acceptable. The standards call for floor
protection to extend a minimum of 18" (457mm) in front of
the appliance door opening, and 8" (200mm) to each side.
NO ADDITIONAL FLOOR PROTECTION REQUIRED.
25-1/2"- 648mm
*HEIGHT MEASUREMENT DOES NOT ACCOUNT FOR FLOOR
PROTECTION MATERIAL WHICH MAY BE NECESSARY.
**FLOOR PROTECTION REQUIREMENTS CHANGE WITH
HEARTH HEIGHT BELOW 6" (152MM).
18"- 457mm
C
B
A
E
D
ADDITIONAL FLOOR PROTECTION IS REQUIRED.
TOP VIEW
25-1/2" - 648mm
8"
200mm
18" (457mm)
8"
200mm
Floor Protection requirements;
18"- 457mm
FLOOR PROTECTION
Raised Hearth 6" (152mm) or higherThe depth of the masonry hearth must measure a minimum
of 12-1/2" (318mm) from the face of the fireplace opening,
to support the insert body. Depending on the overall depth of
the hearth, additional floor protection may be necessary. If
the depth of the hearth measures 25-1/2" (648mm) or more,
from the fireplace facing, no additional floor protection is
needed. If the hearth depth is less than 25-1/2" (648mm),
floor protection must be installed.
7
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Flush Hearth or Raised Hearths Less Than 6" (152mm) -
Masonry Fireplace Requirements
The masonry hearth must measure a minimum of 121/2" (318mm) from the face of the fireplace opening. The
insert may not overhang the masonry hearth. For raised
hearths less than 6" (152mm) in height, floor protection
meeting a minimum 2.02 R-value, must be installed in front
of the masonry hearth and may not exceed the height of the
masonry. If the masonry hearth is flush with the combustible
floor, floor protection must be placed under the insert,
extending to the required distance. It is not permissible
to place a floor protector in front of the insert base, as it
will block the air inlets and create a safety hazard. Floor
protection for these examples must be a minimum of R=
2.02
1.The chimney must be at least 15 feet high but not more
than 33 feet high.
25-1/2" / 648mm
18"- 457mm
2.This room heater must be connected to; 1) a chimney
complying with the requirements for Type HT in the
Standard For Chimneys, Factory Built, Residential Type,
and Building Heating Appliance, UL103 or 2) a code
approved masonry chimney with a flue liner.
3.The entire fireplace and chimney must be clean and in
good condition. Any damage must be repaired before
installing the insert. A stainless steel liner must be installed
if the tile liner of the masonry chimney is damaged.
4.The fireplace and chimney must meet local building codes.
THE FIREPLACE FLUE DAMPER MUST BE REMOVED
OR LOCKED IN THE OPEN POSITION.
Masonry Direct Connect Installation
This method is less expensive than a full re-line. However,
you'll need to check with your local codes to be sure that this
is an acceptable installation method, as most municipalities
require a full liner. Hearth & Home Technologies also
recommends the installation of a full liner.
The connector pipe must be made of stainless steel and be
rated for use with solid fuel burning appliances.
A steel block-off plate (not supplied) is used to seal off the
damper opening and allow the chimney connector to pass
through and extend beyond the first flue tile.
Kaowool, mineral wool or other non-combustible insulation
is recommended above the plate to reduce the possibility of
condensation.
Less Than 6" (152mm)
A chimney cap is recommended to prevent the insulation
from being exposed to rain or moisture.
An external chimney can be no more than two times the
cross sectional area of the appliance flue outlet, or 56
square inches. If larger, an approved chimney liner of 6" or
7" diameter must be installed. Likewise, an internal chimney
can be no more than three times the cross sectional area of
the appliance flue outlet, or 84 square inches. If it is larger,
an approved chimney liner of 6", 7", or 8" diameter must be
installed.
R = 2.02
FLOOR PROTECTION MUST
EXTEND UNDER THE INSERT.
NEVER BLOCK THE AIR
INLETS AT THE FRONT OF
THE INSERT BASE.
Masonry Positive Connect Installation
18"- 457mm
Floor Protector / Protecteur De Sol
This method is recommended, especially if the existing
liner is damaged beyond repair, or for chimneys that have
historically had low draft or smoke spillage problems. This
stainless steel liner, listed to UL-1777, can be rigid or
flexible with a chimney cap and top sealing plate or flashing
installed. Do not mix and match chimney components. Use
only materials or components from the same manufacturer,
that are designed to be used in conjunction with each other.
Follow manufacturer's guidelines for attaching and securing
each venting component.
DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT
OR SYSTEM
8
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
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For Installation In Masonry Fireplace Only
For direct connect and positive connect installations, ensure
that the liner is securely connected to the insert flue collar.
Harman 300i Wood Insert
Clearances
Clearance is the empty space required between the insert
and the nearest combustible surface or object, such as
walls, ceilings, floors, or furniture. Clearance distances may
only be reduced by methods listed in the standard CAN/
CSA B365 (Canada) or NFPA 211 (USA). Contact your
local building authority prior to attempting any clearance
reduction.
From the front of the insert, the clearance to combustible
materials such as furniture, curtains or fuel is; 48" (1215mm)
in the U.S. and 60" (1525mm) in Canada.
Tile Liner
The clearance from the top of the insert to a 12" (305mm)
mantel is 30" (762mm), and to facing trim, 1-1/2" (38mm)
thick, is 20" (508mm).
The clearance from the side of the insert to facing trim,
1-1/2" (38mm) thick, is 13-5/8" (345mm) and from the insert
to a side wall is 29-5/8" (752mm).
Steel Plate
Mantel
Facing trim (1-1/2"/38mm
maximum)
30" (762mm)
20" (508mm)
13-5/8" (345mm)
Sealing Plate
Chimney Cap
29-5/8" (752mm)
!
WARNING
DO NOT INSTALL IN SLEEPING ROOM.
!
WARNING
DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE
SERVING ANOTHER APPLIANCE.
!
CAUTION
MAKESHIFT
COMPROMISES
MADE
DURING
INSTALLATION OR ALTERING ANY SUPPLIED PART
OR COMPONENT MAY PRESENT A SAFETY HAZARD
AND ARE EXCLUDED FROM THE PRODUCT
WARRANTY COVERAGES.
9
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
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For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Flue Liner
When installing the insert, you'll need to connect the flue liner
to the insert collar with a minimum of three fasteners. The
flue adapter is removable for ease of installation in tighter
fireplaces.
Remove the flue collar from the insert by loosening the two
bolts in the top. Attach the flue collar to the liner using three
sheet metal screws. There are two lines etched into the top
of the flue collar bracket. These lines should line up with the
front of the fireplace opening. Keep the height of the bracket
at approximately 24" from the floor. While sliding the insert
into the fireplace, guide the flue collar bracket onto the top of
the insert. The bracket will pull itself into position as the stove
body comes back. The bend on the front of the flue bracket,
and the hooks on the rear will secure the flue collar tightly to
the insert. When the flue is in its proper position, install the
two bolts down through the bracket to secure it.
Holes are provided for
securing pipe with a
minimum of three (3)
fasteners
This bend on the front will
hold down on the collar
when in place under the
lip.
The hooks on back will
hold down on the collar
when in place.
Etched lines mark the face of
the fireplace opening.
Two bolts secure the flue adapter to the
insert.
10
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Slide-Assist Rollers
Handle Installation
The insert bottom is equipped with rollers to aid in moving.
There are two stationary rollers toward the rear of the
appliance, and one engaging roller in the front. To engage
the front roller for movement, you'll first need to remove the
lower base cover. As shown above, the cover is installed
with a screw at each end of it. Remove these screws using
a 5/16 socket or driver. Slide the cover toward the front and
set aside.
The door latch handle and the damper handle are left off for
shipping, and will need to be installed. Both handles and their
bolts are packaged in the hardware bag. The shorter bolt
(2-1/4") will be used for the damper handle, and the longer
bolt (2-1/2") is for the door handle. Insert the bolt through the
open end of the handle, then thread the bolt into the latch
or the damper drive arm. Tighten only hand tight to prevent
cracking of the wooden knob.
To engage the roller; begin by lifting the roller up and forward
in its brackets. This will get the roller in its ready position.
Lift the front of the insert body approximately 1/4 inch. If
needed, the front leveling bolts can be tightened in to lift the
insert. With the body raised, pull the roller down and hold it
forward to lock it in the down position. You will need to hold
the roller into place while the insert is lowered.
Once the insert is in place, lift the front of the body
approximately 1/4" and the roller will disengage when you
lower the body. It is up to you if you want to raise the roller
and lock it in to the disengaged position.
Lower
Base Cover
Leveling bolt
Front Roller
Roller
Ready position
Locked position
11
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
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For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Distribution Blowers
The blowers are already mounted to the insert for installer
convenience. Each blower is secured to the insert body with
(6) screws, as shown.
First, make a determination of which side you'll want the
power cord coming from. On the determined side, install the
short ground wire with ring terminal to the ash lip below and
behind the blower, using the green screw and tooth washer
from the hardware kit.
Notice the high temperature insulated wire pair that runs
across the back of the air chamber beneath the insert,
and attaches to each blower. This is what links the two
blowers together. On the side that you want the power cord,
remove the knockout from the surround panel and insert
the power cord connectors through it. Pull the insulated wire
connections from the blower motor and in their place, hook
up the two female connectors from the cord. Next, attach
the two male connectors from the cord to the insulated
wire ends that were removed from the blower. Plug the
green wire from the power cord into the short green wire
that you installed. Secure the excess cord wires behind the
surround using the wire ties and install the cord clamp into
the knockout hole in the surround.
NOTE: DO NOT CONNECT TO ANY AIR DISTRIBUTION
DUCT OR SYSTEM
Cord
Knockout
300i Fireplace Insert
Blower Wiring Diagram
Blower
Blower
Hi-Temp Wire
(White)
Black
5 Female
Disconnects
2 Female
Disconnects
White
Green
Hi-Temp Wire
(White)
Grounded to
Stove Body
3-90-300141
12
Power
Cord
6 Inch Green
Ground Wire
3 Male
Disconnects
Speed
Control
120 V AC / 60 Hz, 110 Watt , 1.0 Amp Maximum
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Surround Installation
Standard Surround #1-00-300130
Oversize Surround #1-00-300134
Custom Surround #1-00-300130-SPL
The surround is made up of six (6) pieces;
• Left Side
• Right Side
• Top
• Top cap
• (2) Support brackets
Begin by installing the support brackets on each end of the
top panel as shown. Notice the bottom hole is the one that
is threaded.
Harman 300i Wood Insert
Place the top cap down onto the top, aligning the two
(2) studs with the holes in the top panel. Secure from
underneath with two (2) nuts.
Install the side panels as shown below using (2) buttonhead screws at the top, and (1) self-tapping (Tek) screw at
the bottom.
The bottom hole is Threaded
Next, install the top panel by inserting the four (4) studs
through the holes in the fin on the insert. Secure with the
provided nuts and a 11/32" nut driver.
13
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
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Harman 300i Wood Insert
Operation
!
Draft
Before you install and operate your 300i woodburning
insert, please read the entire contents of this
manual. Pay particular attention to the explanation
of draft and its effect on insert performance in
the Installation section. By following the installation and
operating guidelines, you will ensure proper draft and gain
maximum efficiency and enjoyment from your insert.
Fuel
Your insert burns wood very efficiently. Here are some
guidelines concerning log size and moisture content that will
help you obtain the best performance.
Select hardwoods if possible, as they are heavier and contain
more heating capacity (BTU’s) per load than do softwoods.
Wood should be split and stored under cover for “seasoning",
a year is recommended. Your insert is not an incinerator-do
not burn garbage, painted or treated wood, plastic, or other
debris.
Keep the area around the insert free from clutter. Keep
all combustibles, including fuel, beyond the code-required
clearance distance (48" or 1215mm in the U.S., 1525mm or
60" in Canada). Never store fuel in front of the insert where
it could interfere with door operation, safe loading, and ash
removal.
Doors
Your insert has a large glass-paneled door for loading and
fire viewing. To open the glass door, lift the handle upward
and pull open; to close the door, push the door closed, and
press down on the handle to latch.
The door must be closed while the insert is in normal
operation, and the gaskets routinely examined for wear and
replaced when necessary. Good door seals are important for
maintaining control of the insert. Operating the insert with the
door inadequately sealed, could create a serious over-firing
condition (discussed later in this section).
The glass used in your insert is manufactured to exact
standards to withstand the high heat of the fire. Like all glass,
it must be treated with common sense and care. Never abuse
the glass by slamming the door shut or striking the glass with
a heavy object. Do not clean the glass while it is hot. If the
glass is broken or damaged, do not operate the insert until
it has been replaced (See instructions in the Maintenance
section.)
!
WARNING
WARNING
FIREPLACE STOVES EQUIPPED WITH DOORS
SHOULD BE OPERATED ONLY WITH THE DOOR(S)
FULLY OPEN, WITH THE SCREEN IN PLACE, OR
FULLY CLOSED. IF DOORS ARE LEFT PARTLY OPEN,
GAS AND FLAME MAY BE DRAWN OUT OF THE
FIREPLACE STOVE OPENING, CREATING RISKS
FROM BOTH FIRE AND SMOKE.
Andirons
The andirons keep the fuel from coming in direct contact with
the glass, and keep hot coals and embers from spilling out
while reloading. Never build a fire directly against the glass.
Always keep the fuel load behind the andirons.
Do not use a grate or otherwise elevate the fire. Build the fire
directly on the insert's brick floor.
Paint Curing
As you begin to operate your insert at higher temperatures,
you will notice a “hot” or unpleasant smell; this is just the
paint going through the curing process, and will disappear
after a few fires.
!
CAUTION
HOT WHILE IN OPERATION, KEEP CHILDREN,
CLOTHING AND FURNITURE AWAY. CONTACT MAY
CAUSE SKIN BURNS.
The Combustion Process
Combustion in the Harman 300i Wood Insert is precisely
controlled and is best explained in two parts.
During a wood fire, combustion air enters at the bottom front
of the stove where it travels upward through channels at either
side of the front door. From the manifold located above the
front door, it is directed into the firebox as a sheet of air flowing
between the glass and the wood. This concept helps to keep
the glass clean, while providing the oxygen needed to sustain
burning. This is what is known as "Primary Combustion".
Additional air enters at the bottom rear of the stove body.
Some of this air enters through holes in the rear bricks where
it invigorates the fire at the rear of the firebox. The remaining
air is delivered into the "Firedome" combustion package
where it combines with the heated exhaust gases. This reburning of the smoke is known as "Secondary Combustion".
Never build a fire directly against the glass. Always
keep the fuel load behind the andirons.
14
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
During combustion, the burning of wood proceeds through
several stages. The initial or evaporation stage is where
the moisture in the wood is driven off in the form of steam.
A second stage is where the volatile gases contained in the
wood are released and burned. This represents most of
the wood's heating capacity. The final stage is the charcoal
stage where the charcoal burns the remaining heat content
in the wood fuel. Ash remains after the burning is complete.
Within the primary firebox, two or more of these stages of
combustion are occurring at once.
Air Control
The air control slide is located on the ash lip below the firebox
door. Using this lever you will be able to vary the amount of
air delivered to the fire, creating a range of heat outputs. The
low heat output setting is with the control located all the way
to the left. The high setting is with the control located all the
way to the right. There are notches cut into the ash lip to
provide reference points for consistent adjustments. Do not,
under any circumstances, alter the configuration or operation
of the air control slide.
Minimum Burn Rate - air control fully to the left.
Medium-Low Burn Rate - air control at or below the first
notch.
Air Control Shown In The
Medium-Low Position.
Damper Bypass Handle
Two important controls - the damper bypass handle and the
air control lever regulate the operation and output of the stove.
To open the front loading door, you must open the damper
bypass, or smoke will spill into the room. In this mode of
operation the combustion gases go directly from the main
combustion chamber to the flue collar and exit into the
chimney.
Lift upward on the damper handle to open the bypass damper
and push down to close it.
NOTE: The bypass damper must be open for smokeless
loading.
Damper Open
15
Damper Closed
Air Control Shown In The
Medium-High Position.
Air Control shown in the full
open position which is to be
used only for start-up and
refueling
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Medium-High Burn Rate - air control set between the second
and third notch. This setting may be used to burn wood that is
damp in order to keep it burning, but will consume seasoned,
dry wood very fast.
Always remember to open the bypass damper when you are
loading, this allows the exhaust gases to pass directly into
the flue outlet and reduces the chance of smoke spillage
into the room.
High Burn Rate - air control fully to the right. This setting is
for refueling and starting a fire. Continuous burning at this
setting will cause premature failure of consumable parts such
as the "FireDome and/or the firebricks. If continuous burning
at maximum setting is needed, the appliance is too small for
the space you are heating, or the wood fuel is too wet.
Reloading: Once you have prepared and maintained a thick
charcoal bed, and the secondary combustion is established,
you should be able to reload the stove at any time by simply
opening the bypass damper, then the load door, add fuel and
close the door then the damper. Depending on coal bed size,
load size and moisture content of fuel, you may need to burn
for a short period with the damper open and an increased
air control setting.
Note: At minimum burn rates the glass may get dirty but
will clean itself off again at higher burn rates.
Contact may cause skin burns.
Overfiring
Avoid overfiring your insert. Overfiring is a potentially
hazardous situation which can lead to overheating of
combustible materials, damage to the insert, and in extreme
cases, cause a fire. Overfiring is caused by:
1. Too much air flowing through the insert too quickly.
2. You may have positioned the primary air control lever too
far to the right.
3. You may have, inadvertently, left the damper open.
4.Not keeping up with routine maintenance, such as
checking door gaskets for wear.
Overfiring results in excessive fuel consumption, and may
cause parts of the insert to glow red. If you notice signs of
overfiring, reduce the air supply to the fire, and review the
Maintenance section in this manual.
Never leave the insert unattended with the door open.
Overfiring may result.
In the event of a chimney fire, call your local fire department;
make sure everyone is safely out of the house. Reduce the
air intake of the insert as much as possible using the air
control lever; close the bypass damper to further restrict air
flow. Do not throw water on the fire; this can cause insert
damage and create an even more dangerous situation. Have
your chimney professionally cleaned and inspected before
resuming burning in your insert.
16
Removing Ashes: Do not allow ashes to accumulate more
than 2" - 3" in depth. Excessive ash buildup can restrict air
flow through the firebox. This will prevent proper venting of
exhaust gases.
Ashes should be placed in a steel container with a tight
fitting lid. The container of ashes should be moved outside
immediately, and placed on a noncombustible floor or
the ground, well away from all combustible materials,
pending final disposal. If the ashes are disposed of by
burial in soil or otherwise locally dispersed, they should
be retained in the closed container until all cinders have
completely cooled. Other waste shall not be placed in
this container.
Never use the ash disposal container for other trash. Wood
ash can be added to your garden or compost
Before opening the door for ash removal, open the bypass
damper. Using a fire rake, scrape the hot coals to one side
of the firebox and the ashes to the other. Scoop the ashes
out into the metal container as described above. Once the
majority of ashes are removed, spread the hot coals back
out across the bottom of the firebox and add the appropriate
sized fuel to retain the fire. Close the door before taking the
ashes outside for safe disposal.
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
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Harman 300i Wood Insert
Building and Maintaining the Fire
Begin with the bypass damper open, and the air control
lever at the maximum setting, all the way to the right.
Start with a bed of crumpled paper and kindling sized
about finger width; place several 1" - 2" (25mm - 50mm)
split pieces of dry wood on top of the kindling, followed by a
few 2" - 3" (50mm - 80mm) split pieces. Lay the wood in a
crossed pattern to allow maximum air flow. Ignite the paper
and close the loading door. Allow this start-up fire to burn for
a few minutes, keeping the bypass damper open. Add about
five more pieces of wood in the 2" - 3" (50mm - 80mm) size
range, making sure that the fuel bed is all the way across
the firebox and staggered to allow airflow. Close the door
and allow this fuel to burn a few minutes.
Add increasingly larger pieces of wood to the fire until you
have a thick bed of hot embers, approximately 2" - 3" deep
at the back, and at least an inch deep at the front. You must
have this charcoal bed established before you close the
bypass damper.
Providing you have the charcoal bed described above,
close the bypass damper by pushing downward on the
handle. This will begin the highly efficient mode of operation
where the exhaust gases get re-burned in the secondary
combustion package. If you cannot achieve a charcoal bed
within the first 15 to 20 minutes, your wood is likely too wet,
and you may need to burn the fire longer and/or hotter to
compensate for the extra energy needed to drive out the
moisture.
If, after five minutes of burning with the damper closed,
smoke is visible coming from the chimney, you probably
do not have the proper coal bed. Open the bypass damper
and continue with the process until a significant coal bed is
formed.
!
Blower Operation
To regulate the speed of the convection blowers, adjust from
low to high by turning the knob located on the blower cord.
The blower speed should be matched to the air control lever
setting.
When the air setting is low, the blower should always be at
the minimum setting. At higher settings, above the first air
slide indicator notch, the blower may be set to your desired
comfort level. Be sure that the blower cord does not run under,
over, above or in front of the insert.
The following guidelines for air settings can be used for wood
burning; as you become familiar with your insert, you will
know which settings best heat your home.
WARNING
B U R N I N G C O L O R E D PA P E R , C A R D B O A R D ,
SOLVENTS, TRASH AND GARBAGE OR ALTERING
THE STOVE FOR HIGHER HEAT OUTPUT MAY CAUSE
DAMAGE TO THE STOVE AND COULD RESULT IN
A HOUSE FIRE. USE ONLY APPROVED FUELS AND
FOLLOW ONLY THESE OPERATION GUIDELINES.
!
WARNING
DO NOT USE CHEMICALS OR FLUIDS TO START
THE FIRE.
NEVER USE GASOLINE, GASOLINE-TYPE LANTERN
FUEL, KEROSENE, CHARCOAL LIGHTER FLUID, OR
SIMILAR LIQUIDS TO START OR “FRESHEN UP” A
FIRE IN THIS HEATER. KEEP ALL SUCH LIQUIDS
WELL AWAY FROM THE HEATER WHILE IT IS IN USE.
DO NOT INSTALL A GRATE TO SUPPORT OR
OTHERWISE RAISE THE FIRE FROM THE FLOOR OF
THE FIREBOX.
17
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Maintenance
Like all fine equipment, your insert requires some routine
maintenance and inspection. Follow the guidelines in this
section to guarantee safe and efficient operation.
Surface
The insert’s exterior surface should be dusted periodically
with a soft cloth. For more thorough cleaning, wait until
the insert is cool before using a damp cloth to clean any
blemishes.
The Door
If the door needs to be cleaned, wait until the insert is
completely cool, then use a sponge, soap and water to gently
remove dirt and stains. Before relighting the insert, remove
all soap residue and wipe dry.
Controls
To avoid a rust buildup on the inner surfaces of the controls,
work the controls back and forth several times during the
summer, or any prolonged period when you are not using
your insert.
The Fire Chamber
The inside of the fire chamber should be examined for
damage to the refractory lining material, or bricks. If any of
these parts have been damaged, replace them only with
Harman supplied replacement parts.
The ramp brick must be removed to allow vacuum access
for cleaning the front portion of the combustion package.
Always use caution when refueling or when vacuuming the
firebox and combustion package. Some users have damaged
their combustion package with vacuum cleaner tools, and
fire pokers.
!
To replace the glass panel, you will need to remove the door.
To do this, open the door, lift it straight up and place it face
down on a flat surface.
Carefully remove damaged glass, gasket material, and hold
down clips (set aside).
Referring to the diagram, note how the various components of
the door system fit together. Lay the load door face down on
the flat surface. Install the self adhesive 1/4"” gasket material
around the front face of the glass. Note: This glass has a
special IR coating on one side. This coating must be to
the outside of the insert. The coated side has a label on it.
Do not remove the label before installing the glass. Remove
label before burning the unit. If the label has been removed,
you can determine which side has the coating by using an
OHM meter. The side with the coating will show resistance.
Set the glass panel and gasket gently onto the door. Install
the hold down clips and tighten with bolts as shown. Reinstall
door on insert.
Hold Down
Clips and Bolts
Glass Gasket
CAUTION
When cleaning in the rear of the firebox, near the
entrance to the FireDome. Do not poke cleaning tools
into the throat of the FireDome as this may cause
damage to the refractory material.
Glass - Cleaning
Sometimes it will be necessary to clean accumulated ash
from the glass surface; allowing this ash to remain on the
glass for long periods can result in “etching” due to the acidity
of the ash. Any creosote which accumulates on the glass
should burn off during your hot fires.
Never clean the glass while it is hot, and do not use abrasive
substances. Wash the surface with cool water, and rinse
thoroughly. You may wish to use a nonabrasive cleaner
specifically designed for use on stove glass. In any case,
dry thoroughly before relighting your insert.
18
Glass - Replacement
The viewing glass is a specially designed 5mm ceramic
material. If the insert’s glass is cracked or broken, you must
replace it before operating your insert. Remove pieces
carefully. Replace the glass only with Harman supplied
replacement glass, part # 3-40-06932; do not use substitutes.
Glass
Door
!
CAUTION
Handle glass with care.
When cleaning door glass;
• Avoid striking, scratching, or slamming glass.
• Do NOT Clean Glass When Hot.
• Do NOT use abrasive cleaners.
• Inspect gasket, replace if necessary.
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Gaskets
Gaskets are used at strategic positions for controlling the
path that incoming and outgoing air and gases take through
the insert. You must check these gaskets from time to time,
and replace them when necessary. You can test the seal
by closing the component onto a piece of paper. When
closed, the paper should not pull out of the seal without
resistance. The gaskets are made of fiberglass of different
sizes (obtainable from your Harman dealer) and are fixed in
place with a high temperature gasket cement. To change a
gasket, first remove the worn fiberglass and clean the area
with a wire brush. Also clean any other surfaces that come
into contact with the gasket. Place a small bead of cement
in the area under the gasket, then press new gasket material
into the channel; do not overlap the ends. Seat the gasket
firmly by applying pressure when possible; for example, after
changing the door gasket, close the door. Allow the cement
to dry before using your insert.
Gaskets are located on the door and between the damper
and the damper frame.
Door Latch
After a period of time, you may find that the front door does
not close as firmly as when your insert was new. This is
mostly due to a natural compression of the gaskets. To adjust
the latch, loosen the two bolts, and bump the retainer back.
Adjust as necessary to achieve a good seal.
Chimney System
Creosote Formation And Need For Removal
When wood is burned slowly, it produces tar and other
organic vapors, which combine with expelled moisture to
form creosote. The creosote vapors condense in the relatively
cool chimney flue of a slow burning fire. As a result, creosote
accumulates on the flue lining. When ignited, this creosote
makes an extremely hot fire.
The FireDome Combustion system cuts creosote to almost
nothing when properly burned with dry seasoned wood.
IMPORTANT NOTE
The only suitable method for removing creosote from
the venting system is a chimney brush. Creosote
sweeping logs, powders and other products have the
potential to damage the Firedome combustion system,
and are not recommended for use in Harman wood
stoves. Use of chemical creosote removal products
will void the warranty of the Firedome combustion
system.
19
The chimney connector and chimney should be inspected
at least once every 2 months during the heating season to
determine if a creosote buildup has occurred. Checking your
chimney and chimney connector more frequently, especially
while you are getting used to your insert, is recommended. To
inspect this system, let the insert cool. Using a flashlight and
mirror, check the interior of the chimney connector, and the
chimney itself. If creosote has accumulated (3mm or more)
it should be removed to reduce the risk of a chimney fire.
To clean deposits from the surface of the connector, open
the bypass damper to prevent debris from falling into the
FireDome, and clean using the appropriate brush. When
cleaning the stainless steel connector, it is recommended to
use a non-metal brush.
To clean the chimney, use a specially designed brush sized
to fit your particular flue opening, or call an established
chimney cleaning service. It is recommended that you have
your chimney professionally cleaned and inspected annually.
Any cracks or damage should be repaired before further use
of the insert.
Occasionally, it will be necessary to remove the insert to
inspect the appliance and the fireplace. To remove the insert,
you will first need to remove the two bolts that secure the
flue adapter to the top of the insert. Slide the insert out of the
fireplace for inspection. Have any cracks or damage repaired
before further use of the insert.
Do not burn any fuel other than wood, such as charcoal,
which can cause increased carbon monoxide production or
overfiring. Never use highly volatile substances in your insert,
such as gasoline, which could cause an explosion.
When solid fuels are burned completely, they produce
water and carbon dioxide. However, in long slow burns, a
substantial amount of carbon monoxide may be produced.
If allowed to build up, carbon monoxide (which is odorless)
can prove fatally poisonous. Proper ventilation and draft will
prevent this from happening. If you smell smoke, increase
the air control lever setting, and thoroughly ventilate your
dwelling. During future burns, be careful not to overload
the insert with fuel, so you will not be tempted to constantly
operate at a low air control setting.
Other causes of poor draft are icing, exhaust fans, and room
air starvation, which may occur in tightly constructed homes.
If your insert is sluggish and you get an occasional odor,
check these possibilities and increase the air flow in your
home. Dryer vents and other appliances operating in close
proximity to the insert may also create negative pressure.
Proper Ventilation
Always provide a source of fresh air to the room when the
insert is operating.
Blowers
The blowers on your insert require very little maintenance.
You should, however, keep the air inlets and the motors and
fan blades free of dust and pet hair.
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
Harman 300i Wood Insert
Firebox
•Frequency: As necessary / Yearly
•By: User
Cleaning the firebox and internal heat exchange surfaces is
recommended to maintain thermal efficiency. Depending on
the quality and quantity of fuel being used, you may want to
perform this cleaning monthly.
Be sure to clean these areas thoroughly at the end of the
heating season.
Brush and vacuum all internal surfaces at the end of the
heating season. Ashes will draw moisture and may promote
rust formation.
Blower- If installed
•Frequency: As necessary / Yearly
•By: User
The fan on the blower will collect pet hair and other debris
over time. Any accumulation must be removed to maintain
proper operation.
To clean blower;
• Disconnect Power Cord Before Servicing.
• Remove the (3) Tek Screws that hold the blowers in place.
• You will find it easiest to use an air hose and blow the
debris from the blower housing. Alternately, with some
minor disassembly, you can use a vacuum and/or brush
to clean the blower wheel.
• Reinstall the blower and tighten the four bolts securely.
•
Carefully vacuum the ash and debris from around the
sides and top of the Firedome combustion package.
Ash Build-Up
Inspect and Vaccum
both rear corners.
Chimney / Chimney Connector
•Frequency: As necessary / Yearly
•By: Qualified Service Technician / Chimey Sweep
Disassemble the chimney connector and take it outdoors
for inspection and cleaning. Replace weak sections of
connector.
Inspect chimney for signs of deterioration. Repairs to a
masonry chimney should be made by a professional mason.
Replace damaged sections of prefabricated chimney. Your
local dealer or chimney sweep can help determine when
replacement is necessary.
Thoroughly clean the chimney.
Note: When cleaning the chimney connector above the
appliance, keep the bypass damper in the open position.
This will keep any loosened material from falling into the
Firedome Plus combustion chamber.
FireDome Technology
•Frequency: Yearly
•By: Qualified Service Technician / Chimney Sweep
Inspect and clean ash accumilation from around the
Firedome Combustion System being careful not to damage
the Firedome.
• Remove chimney connector from unit and pull unit
away from fireplace opening.
20
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
300i
Service Parts
Beginning Manufacturing Date: Sept. 2010
Ending Manufacturing Date: Active
Wood Insert
1-70-300100-1 (Black),
Ending Manufacturing Date: June 2011
1-70-300100-2 (Charcoal), 1-70-300100-3 (Goldenre))
11
6
10
5
9
8
12
1
7
4
3
2
13
27
26
25
22
23
24
14
16
15
21
17
18
19
20
Part number list on following page.
21
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
08/16
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
300i
Service Parts
Beginning Manufacturing Date: Sept. 2010
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor. Hearth and Home Technologies does not sell directly to consumers. Provide
Stocked
at Depot
model number and serial number when requesting service parts from your dealer or distributor.
ITEM
DESCRIPTION
COMMENTS
PART NUMBER
1
Rear Air Jacket
2-00-300103W
2
Combustion Package Cover
2-00-06922L
3
Damper Frame Assembly
Gasket, 3/8 4 Strand White
30 Ft
1-10-249106
Y
1-00-00888
Y
Damper w/Adjuster
1-10-249107
Damper Shaft Retainers & Hardware
1-00-249145
Y
Pre 008700287
1-00-249142
Y
Post 008700287
1-00-250153
Adjuster w/Hardware
Y
4
Damper Linkage
1-10-249146
5
Damper Shaft Cover
1-10-06918W
6
Flue Plate
1-10-300122W
Y
7
Linkage Kit
1-00-300101
Y
8
Damper Arm Cover
2-00-300121P
9
Left Rear Side
2-00-300104B
10
Left Blower Bracket
Screw -HWH TEKS 10 X 3/4
2-00-300106-1B
Pkg of 100
3-30-5004-100
Y
11
Blower Left Side
3-21-55416
Y
12
Left Side Shield
2-00-300123P
Y
3-30-5004-100
Y
Screw -HWH TEKS 10 X 3/4
Pkg of 100
#13 Load Door Hardware Pack
13
Load Door Latch Assembly
Includes Screws, Steel Sleeve Bushing, Latch Adjuster Plate, Reverse Lock Nut
14
Andiron And Extension Kit w/Hardware
15
Airslide Cover
1 Set
Black
16
Standard Wing
Hardware Pack
17
Lower Base Cover
1-00-06903
2-00-05222-1
Y
1-00-300132
Y
1-00-300130-1
No longer available
1-00-300130-2
No longer available
1-00-300130-3
1-00-300
Y
2-00-300125P
Additional service part numbers appear on following page.
22
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
300i
Service Parts
Beginning Manufacturing Date: Sept. 2010
Ending Manufacturing Date: Active
#18 Airslide Assembly
21.3
#21 Firebox Assembly
18.1
21.2
21.1
21.4
21.12
18.2
18.3
21.5
21.6
21.11
21.7
21.10
21.9
21.8
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor. Hearth and Home Technologies does not sell directly to consumers. Provide
model number and serial number when requesting service parts from your dealer or distributor.
ITEM
DESCRIPTION
COMMENTS
PART NUMBER
18.1
Airslide Adjuster
1-10-300102W
18.2
Airslide Rod Bracket
2-00-06963B
18.3
Airslide Weldment
1-10-06950W
Door Assembly w/Glass
1-10-06920A
19
Ball Spring Bracket
2-00-06714
Cast Door, Painted
4-00-06920P
Y
1-00-06932
Y
Glass Clips
Pkg of 4
2-00-05202-4
Y
Glass Clip Bolts
Pkg of 100
3-30-3021-100
Glass with Gasket
Latch Adjuster
2-00-06713D
Gasket, (Glass) 1/4 Round Black PSA
Gasket, (Door) 3/8 4 Strand White
20
Stocked
at Depot
Wooden Handle w/Bolt
1-00-2312
Y
30 Ft
1-00-00888
Y
2 Sets
1-00-00247
Y
1-00-249119
Y
15 Ft
Door Handle Assembly
1-00-249153
Y
1-10-249117A
Y
10 Ft
1-00-11862
Y
2 Sets
1-00-06945
Y
Brick Insulation
Qty 2 req
3-40-06944
Y
21.5
Brick 12 x 6 x1-/4
Qty 4 req
3-40-86125
Y
21.6
Left Side Brick
3-40-00103
Y
21.7
Logo Brick
21.1
SS Brick Clip Set
21.2
Left Plate Assembly w/Gasket
Set of 2
21.3
Side Brick Brackets
21.4
Gasket, 1/4 " Round White Rope
21.8
Brick, 9" x 4 1/2" x1 1/4"
3-40-00101
Y
Set of 7
1-00-900450125
Y
414 Pcs
3-40-900450-414
21.9
Shoe Brick Gasket
3-44-06951
Y
21.10
Shoe Brick
3-40-00100
Y
21.11
Right Side Brick
3-40-00104
Y
21.12
Right Plate Assembly w/Gasket
1-10-249118A
Y
Gasket, 1/4 " Round White Rope
10 Ft
1-00-11862
Y
Srew-HCS5/16-18 X 1-1/4
Pkg of 50
3-30-1129-50
Y
Additional service part numbers appear on following page.
23
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
300i
Service Parts
Beginning Manufacturing Date: Sept. 2010
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor. Hearth and Home Technologies does not sell directly to consumers. Provide
model number and serial number when requesting service parts from your dealer or distributor.
ITEM
22
DESCRIPTION
COMMENTS
Right Side Shield
Screw -HWH TEKS 10 X 3/4
Pkg of 100
PART NUMBER
2-00-300124P
Y
3-30-5004-100
Y
Y
23
Power Cord w/ VSC
3-20-300140
24
Right Blower Bracket
2-00-300106-2B
Screw -HWH TEKS 10 X 3/4
Pkg of 100
3-30-5004-100
Y
25
Right Rear Side
2-00-300105B
26
Blower, Right Side
3-21-32080
Y
27
Package with Cap and Gaskets
1-00-06999
Y
2-00-06996B
Y
3-44-2500202-4
Y
3-44-06999
Y
Package Cap
Gasket, Brick Air
Pkg of 4
Gacket Set, Complete
Ball Spring Plunger
Pkg of 3
3-31-5500-3
Cast Weld on Door Hinge
Qty 2 req
3-00-773813
Disconnect, Female
Pkg of 25
1-00-00959
Labels, Caution & Danger
10 ea.
1-00-200408541
Pre 008700510
3-42-1990
Post 008700510
3-42-19905
Touch up Paint- Black
Touch up Paint - Charcoal
No longer available
3-42-6201
Touch up Paint - Goldenre
No longer available
3-42-6230
Wire, Hi-temp
24
Stocked
at Depot
12 Ft
Y
1-00-94733
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Hearth & Home Technologies
LIMITED LIFETIME WARRANTY
Hearth & Home Technologies, on behalf of its hearth brands (”HHT”), extends the following warranty for HHT
gas, wood, pellet, coal and electric hearth appliances that are purchased from an HHT authorized dealer.
WARRANTY COVERAGE:
HHT warrants to the original owner of the HHT appliance at the site of installation, and to any transferee taking ownership
of the appliance at the site of installation within two years following the date of original purchase, that the HHT appliance
will be free from defects in materials and workmanship at the time of manufacture. After installation, if covered components manufactured by HHT are found to be defective in materials or workmanship during the applicable warranty period,
HHT will, at its option, repair or replace the covered components. HHT, at its own discretion, may fully discharge all of its
obligations under such warranties by replacing the product itself or refunding the verified purchase price of the product
itself. The maximum amount recoverable under this warranty is limited to the purchase price of the product. This warranty
is subject to conditions, exclusions and limitations as described below.
WARRANTY PERIOD:
Warranty coverage begins on the date of original purchase. In the case of new home construction, warranty coverage
begins on the date of first occupancy of the dwelling or six months after the sale of the product by an independent,
authorized HHT dealer/ distributor, whichever occurs earlier. The warranty shall commence no later than 24 months
following the date of product shipment from HHT, regardless of the installation or occupancy date. The warranty period for
parts and labor for covered components is produced in the following table.
The term “Limited Lifetime” in the table below is defined as: 20 years from the beginning date of warranty coverage for
gas appliances, and 10 years from the beginning date of warranty coverage for wood, pellet, and coal appliances. These
time periods reflect the minimum expected useful lives of the designated components under normal operating conditions.
Warranty Period
Parts
Labor
1 Year
2 years
HHT Manufactured Appliances and Venting
Gas
X
X
Wood
X
X
X
3 years
Pellet
EPA
Wood
Coal
X
X
X
X
X
X
X
X
X
Components Covered
Electric Venting
X
X
All parts and material except as
covered by Conditions,
Exclusions, and Limitations
listed
Igniters, electronic components,
and glass
Factory-installed blowers
Molded refractory panels
X
Firepots and burnpots
5 years
1 year
7 years
3 years
10
years
1 year
X
Limited
3 years
Lifetime
X
X
X
X
X
90 Days
X
X
X
X
X
X
X
X
Castings and baffles
X
X
Manifold tubes,
HHT chimney and termination
Burners, logs and refractory
Firebox and heat exchanger
X
X
All replacement parts
beyond warranty period
See conditions, exclusions, and limitations on next page.
4021-645F 02-18-13
25
Page 1 of 2
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
WARRANTY CONDITIONS:
•
•
•
•
•
This warranty only covers HHT appliances that are purchased through an HHT authorized dealer or distributor. A list of
HHT authorized dealers is available on the HHT branded websites.
This warranty is only valid while the HHT appliance remains at the site of original installation.
This warranty is only valid in the country in which the HHT authorized dealer or distributor that sold the appliance
resides.
Contact your installing dealer for warranty service. If the installing dealer is unable to provide necessary parts, contact
the nearest HHT authorized dealer or supplier. Additional service fees may apply if you are seeking warranty service
from a dealer other than the dealer from whom you originally purchased the product.
Check with your dealer in advance for any costs to you when arranging a warranty call. Travel and shipping charges
for parts are not covered by this warranty.
WARRANTY EXCLUSIONS:
This warranty does not cover the following:
• Changes in surface finishes as a result of normal use. As a heating appliance, some changes in color of interior and
exterior surface finishes may occur. This is not a flaw and is not covered under warranty.
• Damage to printed, plated, or enameled surfaces caused by fingerprints, accidents, misuse, scratches, melted items,
or other external sources and residues left on the plated surfaces from the use of abrasive cleaners or polishes.
• Repair or replacement of parts that are subject to normal wear and tear during the warranty period. These parts
include: paint, wood, pellet and coal gaskets, firebricks, grates, flame guides, batteries and the discoloration of glass.
• Minor expansion, contraction, or movement of certain parts causing noise. These conditions are normal and complaints related to this noise are not covered by this warranty.
• Damages resulting from: (1) failure to install, operate, or maintain the appliance in accordance with the installation
instructions, operating instructions, and listing agent identification label furnished with the appliance; (2) failure to
install the appliance in accordance with local building codes; (3) shipping or improper handling; (4) improper operation, abuse, misuse, continued operation with damaged, corroded or failed components, accident, or improperly/
incorrectly performed repairs; (5) environmental conditions, inadequate ventilation, negative pressure, or drafting
caused by tightly sealed constructions, insufficient make-up air supply, or handling devices such as exhaust fans or
forced air furnaces or other such causes; (6) use of fuels other than those specified in the operating instructions; (7)
installation or use of components not supplied with the appliance or any other components not expressly authorized
and approved by HHT; (8) modification of the appliance not expressly authorized and approved by HHT in writing;
and/or (9) interruptions or fluctuations of electrical power supply to the appliance.
• Non-HHT venting components, hearth components or other accessories used in conjunction with the appliance.
• Any part of a pre-existing fireplace system in which an insert or a decorative gas appliance is installed.
• HHT’s obligation under this warranty does not extend to the appliance’s capability to heat the desired space. Information is provided to assist the consumer and the dealer in selecting the proper appliance for the application. Consideration must be given to appliance location and configuration, environmental conditions, insulation and air tightness of
the structure.
This warranty is void if:
•
•
•
The appliance has been over-fired or operated in atmospheres contaminated by chlorine, fluorine, or other damaging
chemicals. Over-firing can be identified by, but not limited to, warped plates or tubes, rust colored cast iron, bubbling,
cracking and discoloration of steel or enamel finishes.
The appliance is subjected to prolonged periods of dampness or condensation.
There is any damage to the appliance or other components due to water or weather damage which is the result of, but
not limited to, improper chimney or venting installation.
LIMITATIONS OF LIABILITY:
•
The owner’s exclusive remedy and HHT’s sole obligation under this warranty, under any other warranty, express or
implied, or in contract, tort or otherwise, shall be limited to replacement, repair, or refund, as specified above. In no
event will HHT be liable for any incidental or consequential damages caused by defects in the appliance. Some states
do not allow exclusions or limitation of incidental or consequential damages, so these limitations may not apply to you.
This warranty gives you specific rights; you may also have other rights, which vary from state to state. EXCEPT TO
THE EXTENT PROVIDED BY LAW, HHT MAKES NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY
SPECIFIED HEREIN. THE DURATION OF ANY IMPLIED WARRANTY IS LIMITED TO DURATION OF THE
EXPRESSED WARRANTY SPECIFIED ABOVE.
4021-645F 02-18-13
26
Page 2 of 2
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
Harman 300i Wood Insert
27
Harman® • 300i Wood Insert Owner’s Manual_R18 • 2010 - ___ • 05/17
3-90-300101
For Installation In Masonry Fireplace Only
Harman 300i Wood Insert
Contact Information
a brand of
Hearth & Home Technologies
352 Mountain House Road, Halifax, PA 17032
www.harmanstoves.com
Please contact your Harman® dealer with any questions or concerns.
For the location of your nearest Harman® dealer,
please visit www.harmanstoves.com.
- NOTES ________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
NOTICE
DO NOT DISCARD THIS MANUAL
• Important operating
and maintenance
instructions included.
• Read, understand and follow
these instructions for safe
installation and operation.
• Leave this manual with
party responsible for use
and operation.
Printed in U.S.A.
28
Harman® • 300i Wood Insert Owner’s Manual_R17 • 2010 - ___ • 01/17
3-90-300101
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