P68 Pellet Stove Owners Manual - Evergreen Home & Hearth

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will, stove, with, Stove, Pellet, burn, from, that, should, into, This, Fig., temperature, this, room, must, your, feed, venting, blower, unit, power, vent, when, draft, igniter, hopper, door, fuel, gasket

Transcript

R1
P68 Pellet Stove Owners Manual
Save theSe inStructiOnS.
installation & Operating Manual
r13“Ce manuel est disponible en Français sur demande”
SaFetY nOtice
PleaSe read thiS entire Manual beFOre YOu inStall and uSe YOur new rOOM heater. Failure
tO FOllOw inStructiOnS MaY reSult in PrOPertY daMage, bOdilY injurY, Or even death.
FOr uSe in the u.S. and canada. Suitable FOr inStallatiOn in MObile hOMeS.
iF thiS Pellet StOve iS nOt PrOPerlY inStalled, 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.
cOntact YOur lOcal authOritY (Such aS MuniciPal building dePartMent, Fire dePartMent, Fire
PreventiOn bureau, etc.) tO deterMine the need FOr a PerMit.
cette guide d'utiliSatiOn eSt diSPOnible en FrancaiS. chez vOtre cOnceSSiOnnaire de harMan
hOMe heating.
item # 3-90-00688
P68 Pellet Stove
T
he la be l s
ho w n he re is fo r re fe rr en ce o nl y. Fo r sp ec ifi
c in fo rm at io n on c le ar an ce s a
nd te st in g, c on su lt th e ac tu al la be l o
n th e re ar of th e P6
8
fu el h op pe r. *T
hi s ap pl ia nc e is a ls o ap pr ov ed fo r i
ns ta lla
tio
n in to a s ho p. pr ot ec tI oN d e so l fl oo r pr ot ec tI oN Ag en ce A
m ér
ica
in e p
ou r l
a p
ro te ct io n de l'e
nv iro
nn em en t Ce m od éle
es t d
isp
en sé p ar E
PA
ce rti
fic
at io n d'a
pr és
40
C
FR
60
.53
1 p
ar d èfi
ni tio
n [A
pp ar eil
á
bo is (A
) <
< R
at io ai r/c
om bu st ib le>
>]
Us eN VI
ro NM
eN tA l pr ot ec tI oN A
Ge Nc Y
Th is m od el is e xe m pt fr om E
PA
c er tifi
ca tio
n un de r 4
0
C
FR
6
0.
53
1
by d efi
ni tio
n [W
oo d H
ea te r (
A
) "
A
irto -F
ue l R
at io "]
H
ar m an P
68
P
el le t S
to ve La be l m
ea su re s: 4
-3
/8
"
hi gh X
1
0-
3/
4"
w id e "p re Ve Nt H
oU se fI re s" Ins
tal
l a
nd us e on ly in ac co rd an ce w ith
m an ufa
ctu
re r's
in sta
lla
tio
n an d o
pe ra tio
n ins
tru
cti
on s. Co nta
ct loc
al bu ild
ing
o r fi
re o ffic
ial
s a
bo ut re str
ict
ion
s a
nd in sp ec -
tio
n i
n y
ou r a
re a. W
AR
NI
NG
FO
R
MA
NU
FA
CT
UR
ED
H
OM
ES
: D
o n
ot ins
tal
l a
pp lia
nc e i
n a
sl ee pin
g ro om . A
n o
uts
ide
co mb us tio
n a
ir i
nle
t m
us t b
e p
ro vid
ed . T
he st ru ctu
ra l in
teg
rity
of the
m an ufa
ctu
re d h
om e fl
oo r, c
eil
ing
an d w
all
s m
us t b
e m
ain
tai
ne d. Re fer
to m an ufa
ctu
re r's
in str
uc tio
ns a nd lo ca l c
od es fo r p
re ca uti
on s r
eq uir
ed fo r pa ss ing
ch im ne y t
hr ou gh a co mb us tib
le wa ll o
r c
eil
ing
. In
sp ec t a
nd cl ea n e
xh au st ve nti
ng sy ste
m fre
qu en tly
in ac co rd an ce w ith
m an ufa
ctu
re r's
in str
uc tio
ns .
Us e a
3"
or 4"
di am ete
r t
yp e "
L"
or "P
L"
ve nti
ng sy ste
m. Do no t c
on ne ct thi
s u
nit
to a ch im ne y fl
ue se rvi
cin
g a
no the
r a
pp lia
nc e. fU el : W
OO
D
PE
LL
ET
FU
EL
O
R
UP
TO
50
%
C
OR
N
/ P
EL
LE
T M
IX
TU
RE
O
NL
Y.
Inp
ut Ra tin
g M
ax : 8
lb . fu
el/
hr.
U.
S.
E
lec
tric
al Ra tin
g: 11
5 V
AC
, 6
0 H
z, St ar t 4
.1
AM
PS
, R
un 1.
1 A
MP
S
Eu ro pe an E
lec
tric
al Ra tin
g: 24
0 V
AC
, 6
0 H
z, St ar t 2
.0
AM
PS
, R
un 1.
1 A
MP
S
Ro ute
po we r c
or d a
wa y f
ro m un it.
DA
NG
ER
: R
isk
of el ec tric
al sh oc k. Di sc on ne ct po we r s
up ply
be for
e s
er vic
ing
.
Fo r f
ur the
r in
str
uc tio
n, re fer
to ow ne r's
m an ua l. Re pla
ce gl as s o
nly
w ith
5m m ce ra mi c a
va ila
ble
fr om yo ur de ale
r. Ke ep vi ew ing
an d a
sh re mo va l d
oo rs tig
htl
y c
los
ed du rin
g o
pe ra tio
n. MO
DE
L:
"
P6
8"
R
oo m H
ea te r P
el le t F
ue l B
ur ni ng . A
ls o fo r u
se in M
ob ile
H
om es .
Th is p el le t b
ur ni ng a pp lia
nc e ha s be en te st ed a nd lis
te d fo r u
se in M
an uf ac tu re d H
om es in a cc or da nc e w ith
O
A
R
8
14
-2
3-
90
0
th ro ug h 81
4-
23
-9
09
Re po rt #/
Ra po rt # 1
35
-S
-1
3b -2
Te ste
d t
o /
Te sté
à:
AS
TM
E
15
09
, U
LC
-S
62
7-
00
,
an d U
LC
-C
14
82
-M
19
90
W
It Ho Ut sI de sH Ie ld s W
It H
sI de sH Ie ld s se r# -
DO
N
OT
R
EM
OV
E
TH
IS
L
AB
EL
/ N
E
PA
S
EN
LE
VE
R
CE
TT
E
ÉT
IQ
UE
TT
E
MA
DE
IN
U
SA
/ F
ab riq
ué au x É
.-U
.
Mo dé le:
"P
68
"
Ap pa re il d
e c
ha uff
ag e à
gr an ulé
s d
e b
ois
U
tili
sa ble
da ns de s m
ob ile
ho me s. Ce t ap pa re il d
e c
ha uff
ag e à
gr an ulé
s a
ét
é e
ss ay é e
t h
om olo
gu é p
ou r le
s m
ais
on s pr éfa
br iqu
ée
s, co nfo
rm ém
en t a
ux no rm es 81
4-
23
-9
00
à
81
4-
23
-9
09
de l'O
AR
.
P.
N
. 3
-9
0-
06
80
6
MI
NI
MU
M
cl eA rA Nc es to co MB
Us tI Bl es :
Ba ck W
all
To A
pp lia
nc e 2"
2
"
Si de W
all
To A
pp lia
nc e 20
"
1
2"
co rn er In st all
at io n W
all
s T
o A
pp lia
nc e 13
"
9"
fl oo r pr ot ec tI oN -
U
s cA NA
dA Si de s( A)
2
"
8"
Ba ck (B
)
0
"
0"
Fr on t( C)
6
"
18
"
Us e a no nco mb us tib
le flo
or p ro tec
tor
e xte
nd ing
un de r th
e u
nit
an d t
o t
he si de s, fro
nt,
an d b
ac k o
f u
nit
as sh ow n i
n F
loo
r P
ro tec
tio
n D
iag
ra m. M
ea su re fro
nt dis
tan
ce fr om th e s
ur fac
e o
f th
e g
las
s d
oo r. Re co mm en de d: No nco mb us tib
le flo
or p ro tec
tio
n ex te nd ing
b en ea th a ny h or izo
nt al se cti
on s of ve nti
ng , i
nc lud
ing
th e "T
" o
n the
b ac k wh en v en ting
ve rtic
all
y. "p re Ve Nt Io N
de s IN
ce Nd Ie s" Re sp ec ter
s cru
pu leu
se me nt les
in str
uc tio
ns d u co ns tru
cte
ur p ou r l
'in
sta
lla
tio
n et les
co ns ign
es d e fon
cti
on ne me nt.
R
es pe cte
r l
es rè gle
s d
e sé cu ritè
e n vig
ue ur d an s v
otr
e ré gio
n. AV
er tI ss eM eN t po Ur M
oB Il e Ho Me s: N
e p
as in sta
lle
r d
an s u
ne ch am br e. ll e
st im pe ra tif
de pr év
oir
un e p
ris
e d
'al
r e
xté
rie
ur.
L'
int
ég
rité
st ru ctu
ra le du pl an ch er,
du pl afo
nd et de s m
ur s d
oit
ét
re st ric
tem
en t p
ré se rvé
e. Se re po rte
r a
ux in str
uc tio
ns d u fab
ric
an t e
t a
ux ré gle
me nta
tio
ns s pé cifi
qu es lo ca les
co nc er na nt les
p ré ca uti
on s re qu ise
s lor
s de la tr av er sé e d'u
n mu r o
u d'u
n pla
fon
d. Co ntr
óle
r e
t n
ett
oy er fr éq
ue mm en t to
ut le sy ste
me d' ev ac ua tio
n d
es fu mé es co nfo
rm é-
me nt au x r
ec om ma nd ati
on s d
u c
on str
uc teu
r. U
tili
se r d
es tu ya ux <

pé cia
l g
ra nu lés
>>
de Ø
76
m m ou 1
02
m m. N
e pa s ra cc or de r c
e po éle
à
u n co nd uit
d e ch em iné
e dé jà uti
lis
é p
ou r u
n a
utr
e a
pp ar eil
.
FO
NC
TI
ON
NE
E
XC
LU
SI
VE
ME
NT
A
VE
C
DE
S
GR
AN
UL
ES
D
E
BO
IS
.
AS
TM
E
15
09
-U
LC
-C
14
82
-M
19
90
Ap pa re il d
e c
ha uff
ag e à
gr an ulé
ty pe (U
M)
84
-H
UD
. C
on so mm ati
on m ax im um : 3
.63
kg /h.
U.
S.
E
lec
tric
al Ra tin
g: 11
5 V
AC
, 6
0 H
z, St ar t 4
.1
AM
PS
, R
un 1.
1 A
MP
S
Ca ra cté
ris
tiq
ue s éle
ctr
iqu
es : 2
40
V
AC
, 6
0
Hz -In
ten
sit
é
au d ém
ar ra ge 2
.0A
-I
nte
ns ité
fon
cti
on ne me nt no rm al 1.1
A.
Te nir
le co rd on d' ali
me nta
tio
n à
l'é
ca rt du po èle
.
dA NG
er : R
isq
ue d' éle
ctr
oc uti
on . D
éb
ra nc he r l'
ap pa re il a
va nt tou
te int
er ve nti
on .
Ne re mp lac
er la v itre
q u'a
ve c un e vit
re c ér
am iqu
e 5m m de m ém
e qu ali
té dis
po nib
le au pr ès
de vo tre
re ve nd eu r. Po ur u ne in for
ma tio
n plu
s c
om plé
te,
se re po rte
r à
la n oti
ce d 'ut
ilis
ati
on . T
en ir la po rte
he rm éti
qu em en t c
los
e d
ur an t fo
nc tio
nn em en t. 2"
-5
cm W
It Ho Ut s Id e sH Ie ld s 20
"-
51
cm sa ns É
cr an s L
at ér
au x te st s r
éa
lis
és
p ar o MN
I
TE
ST
L
AB
OR
AT
OR
IE
S,
In c. Re po rt
13
5-
S-
13
b2
dI st AN
ce s MI
NI
MA
le s de se cU rI te :
sa ns Av ec É
cr an s É
cr an s La té ra ux L
at ér
au x Mu r a
rri
ér
e P
oé le 5
cm 5
cm Mu r ln
tér
al - P
oé le 51
cm 30
.5c
m In st all
at io n en an gl e Mu rAn gle
P
oé le dia
go na le 3
3c m 23
cm pr ot ec tI oN de so l -
U
s cA NA
dA
tés
(A
)
5
cm 20
cm De rri
ér
e( B)
0
cm 0
cm De va nt (C
)
1
5 c
m 4
6 c
m Ut ilis
er un e p
ro tec
tio
n d
e s
ol lnc
om bu sti
ble
dé pa ssa nt de l'a
pp ar eil
su r le
s c
ôté
s, l'a
rri
èr
e e
t le
de va nt co mm e i
nd iqu
é s
ur le sc hé ma . L
a m
es ur e d
oit
ét
re pr ise
á
pa rtir
de la vi tre
fr on tal
e. ll e
st re co mm an dé qu e la pr ote
cti
on d e so l s
'en
ten
de a u de ss ou s d
u tuy
au de fu mé e d
an s l
e c
as d' un e s
or tie
ho riz
on tal
e dir
ec te.
Da te o f M
an uf ac tu re / D
at e d
e f
ab ric
at io n: 20
10
2
01
1
20
12
J
AN
F
EB
M
AR
A
PR
M
AY
J
UN
J
UL
A
UG
S
EP
O
CT
N
OV
D
EC
Fa br iq ué p ar : H
ar m an H
om e H
ea tin
g 35
2 M
ou nt ain
H
ou se R
oa d, H
ali
fa x P
A
17
03
2
po rtl
an d or eg on U
sA te st ed an d li st ed B
y OM
NI
-T
es t L
ab or at or ies
, In
c. A
B
A
W
It Ho Ut s Id e sH Ie ld s 13
"
1
3"
3"min
3"
m in 33
cm 33
cm 8cm min
8c m m in sa ns É
cr an s L
at ér
au x c  P68 Pellet Stove
Please read this entire manual before you install
and use your new room heater. Failure to follow instructions may result in property damage,
bodily injury, or even death.
52 Mountain House Road
Halifax, PA 1702
Important Notes / Safety Concerns 5
Installation 6
Venting 8
Automatic Operation 15
Manual Operation 18
ESP Control 20
Low Draft Voltage Adjustment 21
Room Sensor 22
Maintenance 2
Trouble Shooting 28
Specifications 29
Options 29
Wiring Diagram 1
Power Failure / Back-up 
Warranty 
Service Parts Listing 5
table of contents
introduction
This label is located on the back of the unit.
Please copy the Serial Number for future reference.
Serial #:
The Award-Winning P68 Pellet Stove has the widest BTU range available, giving you 0 to 68,000 BTU when you
need it, automatically. The only thing you need to do is set your desired room temperature and fill the hopper.
With the P68 you will notice even heat throughout your home and a level of convenience you never thought
possible.
The P68 epitomizes the capability of Harman Pellet Stoves, taking advantage of Harman’s 20 years of pellet
stove design, technology and manufacturing. This 68,000 BTU stove has the highest output, smartest controls,
widest heating range, and minimal maintenance. The P68’s huge output is managed by a microprocessor that
senses the room temperature and the fire temperature with tiny thermister probes and then determines the
best feed rate. This improved and smarter control also has a diagnostic port for connecting an external display
showing live working data for easier troubleshooting.
The platinum combination is Harman’s Patented Feeder & Burn Pot, and ESP Control which have been developed
to their highest state. These features work together to allow amazing heat output with different fuel quality, ash
content and moisture.
protectIoN de sol
floor protectIoN
Agence Américaine pour la protection de l'environnement
Ce modéle est dispensé par EPA certification d'aprés 40 CFR 60.531 par dèfinition [Appareil á bois (A) << Ratio air/combustible>>]
Us eNVIroNMeNtAl protectIoN AGeNcY
This model is exempt from EPA certification under 40 CFR 60.531 by definition [Wood Heater (A) "Air-to-Fuel Ratio"]
Harm n P68 Pellet Stove
Label measures: 4-3/8" high X 10-3/4"wide
"preVeNt HoUse fIres"
Install and use only in accordance with manufacturer's installation and operation
instructions. Contact local building or fire officials about restrictions and inspection in your area.
WARNING FOR MANUFACTURED HOMES: Do not install appliance in a sleeping
room. An outside combustion air inlet must be provided. The structural integrity of
the manufactured home floor, ceiling and walls must be maintained.
Refer to manufacturer's instructions and local codes for precautions required for
passing chimney through a combustible wall or ceiling. Inspect and clean exhaust
venting system frequently in accordance with manufacturer's instructions.
Use a 3" or 4" diameter type "L" or "PL" venting system.
Do not connect this unit to a chimney flue servicing another appliance.
fUel: WOOD PELLET FUEL OR UP TO 50% CORN / PELLET MIXTURE ONLY.
Input Rating Max: 8 lb. fuel/hr.
U.S. Electrical Rating: 115 VAC, 60 Hz, Start 4.1 AMPS, Run 1.1 AMPS
European Electrical Rating: 240 VAC, 60 Hz, Start 2.0 AMPS, Run 1.1 AMPS
Route power cord away from unit.
DANGER: Risk of electrical shock. Disconnect power supply before servicing.
For further instruction, refer to owner's manual.
Replace glass only with 5mm ceramic available from your dealer.
Keep viewing and ash removal doors tightly closed during operation.
MODEL: "P68"
Room Heater Pellet Fuel Burning. Also for use in Mobile Homes.
This pellet burning appliance has been tested and
listed for use in Manufactured Homes in accordance
with OAR 814-23-900 through 814-23-909
Report #/ Raport # 135-S-13b-2
Tested to / Testé à:
ASTM E1509, ULC-S627-00,
and ULC-C1482-M1990 WItHoUt
sIde sHIelds
WItH
sIde sHIelds
ser# DO NOT REMOVE THIS LABEL / NE PAS ENLEVER CETTE ÉTIQUETTE MADE IN USA / Fabriqué aux É.-U.
Modéle: "P68"
Appareil de chauffage à granulés de bois Utilisable dans des mobile homes. Cet
appareil de chauffage à granulés a été essayé et homologué pour les maisons
préfabriquées, conformément aux normes 814-23-900 à 814-23-909 de l'OAR.
P.N. 3-90-06806
MINIMUM cleArANces
to coMBUstIBles:
Back Wall To Appliance 2" 2"
Side Wall To Appliance 20" 12"
corner Installation
Walls To Appliance 13" 9"
floor protectIoN - Us cANAdA
Sides (A) 2" 8"
Back (B) 0" 0"
Front (C) 6" 18"
Use a non-combustible floor protector extending
under the unit and to the sides, front, and back of unit
as shown in Floor Protection Diagram. Measure front
distance from the surface of the glass door.
Recommended: Non-combustible floor protection
extending beneath any horizontal sections of
venting, including the "T" on the back when venting vertically.
"preVeNtIoN des INceNdIes"
Respecter scrupuleusement les instructions du constructeur pour l'installation et les
consignes de fonctionnement. Respecter les règles de sécuritè en vigueur dans votre
région.
AVertIsseMeNt poUr MoBIle HoMes: Ne pas installer dans une chambre. ll est
imperatif de prévoir une prise d'alr extérieur. L'intégrité structurale du plancher, du plafond
et des murs doit étre strictement préservée.
Se reporter aux instructions du fabricant et aux réglementations spécifiques locales
concernant les précautions requises lors de la traversée d'un mur ou d'un plafond.
Contróler et nettoyer fréquemment tout le systeme d'evacuation des fumées conformément aux recommandations du constructeur. Utiliser des tuyaux <>
de Ø76 mm ou 102 mm. Ne pas raccorder ce poéle à un conduit de cheminée déjà
utilisé pour un autre appareil.
FONCTIONNE EXCLUSIVEMENT AVEC DES GRANULES DE BOIS.
ASTM E1509-ULC-C1482-M1990
Appareil de chauffage à granulé type (UM) 84-HUD. Consommation maximum: 3.63 kg/h.
U.S. Electrical Rating: 115 VAC, 60 Hz, Start 4.1 AMPS, Run 1.1 AMPS
Caractéristiques électriques: 240 VAC, 60 Hz-Intensité au démarrage 2.0A -Intensité
fonctionnement normal 1.1A. Tenir le cordon d'alimentation à l'écart du poèle.
dANGer: Risque d'électrocution. Débrancher l'appareil avant toute intervention.
Ne remplacer la vitre qu'avec une vitre céramique 5mm de méme qualité disponible
auprès de votre revendeur.
Pour une information plus compléte, se reporter à la notice d'utilisation. Tenir la porte
hermétiquement close durant fonctionnement.
2"-5cm
WItHoUt sIde sHIelds
20"-
51cm
sans Écrans Latéraux
tests réalisés par oMNI
TEST LABORATORIES, Inc.
Report № 135-S-13b-2
dIstANces MINIMAles de
secUrIte:
sans Avec
Écrans Écrans
Latéraux Latéraux
Mur arriére - Poéle 5cm 5cm
Mur lntéral - Poéle 51cm 30.5cm
Installation en angle
Mur- Angle Poéle diagonale 33cm 23cm
protectIoN de sol - Us cANAdA
Côtés (A) 5 cm 20 cm
Derriére (B) 0 cm 0 cm
Devant (C) 15 cm 46 cm
Utiliser une protection de sol lncombustible dépassant de l'appareil sur les côtés, l'arrière et le devant
comme indiqué sur le schéma. La mesure doit étre
prise á partir de la vitre frontale. ll est recommandé
que la protection de sol s'entende au dessous du
tuyau de fumée dans le cas d'une sortie horizontale
directe.
Date of Manufacture / Date de fabrication:
2010 2011 2012 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Fabriqué par: Harman Home Heating 352 Mountain House Road, Halifax PA 17032
portland
oregon UsA
tested and
listed By
OMNI-Test Laboratories, Inc.
A
B
A
WItHoUt sIde sHIelds
13"
13"
3"m
in 3"min
33cm
33cm
8cm
m in 8cm min
sans Écrans Latéraux
c 5P68 Pellet Stove
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.
Mobile home installation should be done
in accordance with the Manufactured
home and Safety Standard (hud), cFr
3280, Part 24.
cautiOn
the Structural integritY OF the
MObile hOMe FlOOr, wall, and
ceiling/rOOF MuSt be Maintained.
cautiOn
KeeP cOMbuStible MaterialS
(Such aS graSS, leaveS, etc.) at leaSt
3 Feet awaY FrOM the Flue Outlet On
the OutSide OF the building.
iMPOrtant nOteS
installation and repair of this harman stove
should be done by a qualified service person.
we recommend that the stove be inspected
before use and at least annually by a qualified
service person. Periodic cleaning is required
throughout the heating season and at the end
of each winter for the stove to work efficiently.
See cleaning instructions on page 23.
Mobile/Manufactured home Standards
do not allow installation in rooms
designated For Sleeping.
warning
Fuel
The P68 is approved for use with wood pellets and for
a mixture of shelled corn and wood pellets. See the
corn mixture addendum on page 2 of this manual.
Store fuel in a dry area, well away from the
appliance.
Remember, corn is a food source and will attract bugs
and other pests. If using corn for burning, keep it in a
sealed container outside your home.
dO nOt cOnnect thiS unit tO anY air
diStributiOn Or duct SYSteM.
cautiOn
hOt while in OPeratiOn. KeeP
children, clOthing and Furniture
awaY. cOntact MaY cauSe SKin
burnS.
6 P68 Pellet Stove
assembly and installation
unpacking
The P68 is bolted (1/ x 1" hex head bolts) to the
skid to prevent movement during shipping.
To free the stove from the skid you must remove
the hold-down bolts in the rear of the pedestal
base.
installing rear cover panels
The rear cover panels are removed from the stove
to make it easier to get at the hold-down bolts.
The rear cover panels are packed inside the
hopper and should be installed on the stove as
shown. It is recommended that the rear covers
are installed after the unit is in place and the vent
pipe is installed.
Firebrick
Install the firebrick vertically on the angle bracket
above the burnpot.
Flame guide
Install the cast iron flame guide on top of the
burn pot. Make sure that the flame guide is fully
seated on the vertical sides of the burn pot and
that the back of the guide rests against the body
of the stove.
INSTALL EXHAUST VENT AT CLEARANCES
SPECIFIED BY THE VENTINg MANUFACTURER.
Most pellet vent requires a minimum of " of
clearance to combustible materials.
Rear Cover
Panels
Shipping Bolts
Note: These same holes
are used for securing the
stove in mobile home
installation.
8mm Spring Washer
-1-08558
1. Remove wood handle ( P.N. -0-0012 ), 6mm
spring washer ( P.N. -1-08558 ) and socket head
cap screw ¼-20 x 2-1/" ( P.N. -0-025202252 )
from hardware pack.
Wood Handle
-0-0012
SHCS 1/-20 x 2-1/
-0-025202252
door handle installation
2. Install spring washer and wood handle onto socket
head cap screw as shown in fig. 2 and thread onto
latch on front door.
. Tighten using a /16" hex key wrench.
Fig. 2
Fig. 1
7P68 Pellet Stove
installing
Place the stove on a noncombustible floor protector that extends a minimum of 6 inches (152mm) to the front, 2 inches to
the sides and flush with the rear of the hopper. (See Fig. 6.) The
minimum floor protector material is 20 gauge sheet metal. Other
floor protector materials are ceramic tile, stone, brick, etc.
Place the stove away from combustible walls at least as far
as shown in Figures , , and 5. Please note the difference in
side wall clearance with and without side shields.
Note that the clearances shown are minimum for safety but
do not leave much room for access when cleaning or servicing.
Please take this into account when placing the stove.
Connect the power cord to a 120 V.A.C. 60Hz grounded
receptacle. (A surge protector is recommended to protect the
circuit board.) If the voltage entering your home is below 116
volts your stove may not work properly. Also be sure that the
polarity of the outlet that the stove is plugged into is correct.
Prior to installing the flue pipe, connect a draft meter. (The
draft meter must have a minimum range of 0-.5") Record the
first reading. Connect flue pipe to stove and be sure all doors
and windows in the home are closed. Record the second draft
reading_______. If the second reading is more than .05" lower
than the first reading, check for possible restrictions or the need
for outside air (see page 9). For more information on the draft
test procedure, refer to Page 21.
Mobile home installation
When installing this unit in a mobile home, several requirements must be followed:
1. The unit must be bolted to the floor. This can be done with
1/" lag screws through the 2 holes in the base plate.
2. The unit must also be connected to outside air. See page
10.
. Floor protection and clearances must be followed as
shown.
. Unit must be grounded to the metal frame of the mobile
home.
cautiOn: this appliance must be vented to the outside.
Due to high temperatures, the stove should be placed out of
traffic and away from furniture and draperies.
Children and adults should be alerted to the hazards of high
surface temperatures and should stay away to avoid burns to
skin and/or clothing.
Young children should be carefully supervised when they are
in the same room as the stove.
Clothing and other flammable materials should not be placed
on or near this unit.
installation
9"-13"
9"-13"
9" With Side Shields
13" Without Side Shields
Floor Protection: Front and side requirements are
measured from the firebox opening. Floor Protector
minimum: 25" wide x 33" deep.
Fig. 3
Fig. 4
Fig. 6
2"
51mm
6"
152 mm
0"
(even with
hopper)
Fig. 5
20"
2"
25" minimum
2"

" m
in im um Mobile/Manufactured home Standards
do not allow installation in rooms
designated For Sleeping.
warning
36"
36"
8 P68 Pellet Stove
venting
requirements for terminating the venting
WARNINg: Venting terminals must not be recessed
into a wall or siding.
NOTE: Only PL vent pipe wall pass-throughs and
fire stops should be used when venting through combustible materials.
NOTE: Always take into consideration the effects
of the prevailing wind direction or other wind currents
that may cause flyash and/or smoke when placing the
termination vent.
in addition, the following must be observed:
A. The clearance above grade must be a minimum
of 18".1
B. The clearance to a window or door that may be
opened must be a minimum of 8" to the side, 8"
below the window/door, and 12" above the window/
door.1
( with outside air installed, 18” )
C. A 12" clearance to a permanently closed window is recommended to prevent condensation on
the window.
D. The vertical clearance to a ventilated soffit located above the terminal within a horizontal distance
of 2 feet (60 cm) from the center-line of the terminal
must be a minimum of 18".
E. The clearance to an unventilated soffit must be
a minimum of 12".
F. The clearance to an outside corner is 11" from
center of pipe.
g. The clearance to an inside corner is 12".
H. A vent must not be installed within 3 feet (90 cm)
above a gas meter/regulator assembly when measured
from the horizontal center-line of the regulator.1
I. The clearance to service regulator vent outlet
must be a minimum of 6 feet.1
J. The clearance to a non-mechanical air supply
inlet to the building or the combustion air inlet to any
other appliance must be a minimum of 8”.1
K. The clearance to a mechanical air supply inlet
must be a minimum of 10 feet.1
(with outside air installed, 6 feet )
L. The clearance above a paved sidewalk or a
paved driveway located on public property must be a
minimum of 7 feet.1,2
M. The clearance under a veranda, porch, deck or
balcony must be a minimum of 12 inches.1,3(See b.)
NOTE: The clearance to vegetation and other exterior combustibles such as mulch is 6” as measured
from the center of the outlet or cap. This 6” radius
continues to grade or a minimum of 7 feet below the
outlet.
1Certain Canadian and or Local codes or regulations may require different clearances.
2A vent shall not terminate directly above a sidewalk or paved driveway which is located between two
single family dwellings and serves both dwellings.
3Only permitted if veranda, porch, deck, or balcony
is fully open on a minimum of 2 sides beneath the
floor.
nOte: where passage through a wall, or partition
of combustible construction is desired, the
installation shall conform to can/cSa-b365. (if
in canada)
= Vent terminalv
9P68 Pellet Stove
venting
A combustion blower is used to extract the combustion gases from the firebox. This causes a negative
pressure in the firebox and a positive pressure in the
venting system as shown in Fig. 7. The longer the vent
pipe and more elbows used in the system, the greater
the flow resistance. Because of these facts we recommend using as few elbows as possible and 15 feet or
less of vent pipe. The maximum horizontal run should
not exceed 8". If more than 15 feet of pipe is needed,
the interior diameter should be increased from " to
4" because a larger pipe causes less flow resistance.
be sure to use approved pellet vent pipe wall and
ceiling pass-through fittings to go through combustible walls and ceilings. The use of a starting collar
is not always necessary. The first piece of pipe must
be fastened securely with at least 2 fasteners. The two
fasteners provided are a self drilling type, however,
due to material thickness, drilling a /2" pilot hole is
recommended.
venting
iMPOrtant nOtice
Approved Pellet Vent Pipe Such As, Type "L"
Or "PL", Must Be Used.
= Positive Static Pressure
= Negative Static Pressure
+
+
-
+
-
Fig. 7
vent Pipe
Pellet venting pipe (known as L or PL vent) is
constructed of two layers with air space between the
layers. This air space acts as an insulator and reduces
the outside surface temperature to allow a clearance
to combustibles of 1 to  inches. The sections of pipe
lock together to form an air tight seal in most cases.
However, in some cases a perfect seal is not achieved.
For this reason and the fact that the P68 operates with a
positive vent pressure we specify that the joints also
be sealed with high temp (rtv) silicone. Aluminum
tape can also be used for any joint that is 1ft. or more
from the outlet of the stove.
avoiding Smoke and Odors
negative Pressure, Shut-down, and Power
Failure:
To reduce the probability of back-drafting or burnback in the pellet burning appliance during power
failure or shut-down conditions, the stove must
be able to draft naturally without exhaust blower operation. Negative pressure in the house will resist this
natural draft if not accounted for in the pellet appliance
installation.
Heat rises in the house and leaks out at upper levels.
This air must be replaced with cold air from outdoors,
which flows into lower levels of the house. Vents and
chimneys into basements and lower levels of the house
can become the conduit for air supply, and reverse
under these conditions.
Outside air:
harman home heating and hearth & home technologies strongly recommend attaching outside air
in all installations, especially lower level and main
floor locations.
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.
dO nOt uSe MaKeShiFt cOMPrOMiSeS
when inStalling thiS aPPliance.
daMage and/Or injurY MaY reSult.
a chiMneY cOnnectOr MaY nOt PaSS
thrOugh and attic Or rOOF SPace,
clOSet Or SiMilar cOncealed SPace,
FlOOr , Or ceiling.
FOllOw vent ManuFacturer'S
guidelineS regarding clearanceS
and PrOPer attachMent.
10 P68 Pellet Stove
Outside air flex pipe
goes here.
Inlet Cover part#
1-10-08542
Flex pipe part#
1-00-08543 (25')
venting
Direct Vent Wall Passthrough Kit
(part #1-00-677077)
Per national building codes, consideration must be
given to combustion air supply to all combustion appliances. Failure to supply adequate combustion air for all
appliance demands, may lead to back-drafting of those
and other appliances.
When the appliance is side-wall vented: The air intake is best located on the same exterior wall as the
exhaust vent outlet and located lower on the wall than
the exhaust vent outlet.
When the appliance is roof vented: The air intake is
best located on the exterior wall oriented towards the
prevailing wind direction during the heating season.
The outside air connection will supply the demands
of the pellet appliance, but consideration must be given
to the total house demand. House demand may consume some air needed for the stove, especially during
a power failure. It may be necessary to add additional
ventilation to the space in which the pellet appliance is
located. Consult with your local HVAC professional to
determine the ventilation demands for your house.
To install outside air use 2 /8" I.D. non-combustible
flex pipe. There is a break-away hole on the rear panel
of the P68 stove which must be removed before connecting the flex pipe. The pipe should be run outside
and terminate to the side or below the vent pipe outlet
so the flue outlet is more than 12" from the inlet cover.
The maximum length run of this pipe is 15 feet. If a
longer run is needed the size must be increased to ".
Inlet cover, part number 1-10-0852 should be used to
keep birds, rodents, etc.out of the pipe.
You may choose to use the optional Direct Vent Wall
Passthrough Kit (part #1-00-677077) which incorporates
the venting passthrough and outside air inlet into one
component.
Vent Configurations:
To reduce probability of reverse drafting during shut-down conditions, Hearth & Home Technologies
strongly recommends:
• Installing the pellet vent with a minimum vertical run of five feet, preferably terminating above the roof line.
• Installing the outside air intake at least four feet below the vent termination.
To prevent soot damage to exterior walls of the house and to prevent re-entry of soot or ash into the house:
• Maintain specified clearances to windows, doors, and air inlets, including air conditioners.
• Vents should not be placed below ventilated soffits. Run the vent above the roof.
• Avoid venting into alcove locations.
• Vents should not terminate under overhangs, decks or onto covered porches.
• Maintain minimum clearance of 12 inches from the vent termination to the exterior wall. If you see
deposits developing on the wall, you may need to extend this distance to accommodate your installation
conditions.
Hearth & Home Technologies assumes no responsibility for, nor does the warranty extend to,
smoke damage caused by reverse drafting of pellet appliances under shut-down or power failure
conditions.
11P68 Pellet Stove
#2 Preferred method
This method also provides excellent venting
for normal operation but requires the stove to be
installed farther from the wall. The vertical portion
of the vent should be three to five feet high and at
least three inches from a combustible wall. This
vertical section will provide natural draft in the event
of a power failure.
If the stove is installed below grade be sure the
vent termination is at least 18" above grade. The
outlet must also be 1 foot from the house/building.
Note: Do not place joints within wall passthroughs.
cautiOn
Keep combustible materials (such as grass,
leaves, etc.) at least 3 feet away from the flue
outlet on the outside of the building.
#1 Preferred method
This method provides excellent venting for
normal operation and allows the stove to be installed closest to the wall. Two inches from the wall
is safe; however, four inches allows better access
to remove the rear panel. The vertical portion of the
vent should be three to five feet high. This vertical
section will help provide natural draft in the event of
a power failure. note: do not place joints within
wall pass-throughs.
venting
Fig. 8 3 ft.to combustibles
Fig. 9 3 ft.to combustibles
3 ft.to combustibles
36" min
clearance to any
combustible
material
12" min. wall to outlet
3 ft.to combustibles
12 P68 Pellet Stove
#4 Installing into an existing
chimney
This method provides excellent venting for
normal operation. This method also provides
natural draft in the event of a power failure. If the
chimney condition is questionable* you may want
to install a liner as in method #7.
*The chimney should be inspected and cleaned
before installing your stove. If you discover that the
chimney does not have a clay tile liner or has cracks
or flaking of the tile liner you will need to install a
stainless steel liner within the chimney. In most cases
the inside diameter of this liner should be ". Either
flexible or rigid liner may be used for this purpose.
Refer to Method 6 & 7.
Be sure to design the venting so that it can be easily
cleaned.
#5 Installing into an existing
fireplace chimney
This method provides excellent venting for
normal operation. This method also provides natural
draft in the event of a power failure. If the chimney
condition is questionable* you may want to install a
liner as in method #6.
*The chimney should be inspected and cleaned
before installing your stove. If you discover that the
chimney does not have a clay tile liner or has cracks
or flaking of the tile liner you will need to install a
stainless steel liner within the chimney. In most cases
the inside diameter of this liner should be ". Either
flexible or rigid liner may be used for this purpose.
Refer to Fig. 6 & 7.
The chimney should be sealed at the damper
using a steel plate. Kaowool, mineral wool or an
equivalent non-combustible insulation is recommended to be installed on top of the sealing plate to
reduce the possibility of condensation. The connector pipe should extend through the smoke chamber
to the base or into the first flue tile.
Be sure to design the venting so that it can be
easily cleaned.
Fig. 10
Fig. 11
venting
1P68 Pellet Stove
#6 Installing into an existing fireplace
chimney
This method provides excellent venting for
normal operation. This method also provides natural
draft in the event of a power failure.
In some places in the US and Canada it is required that the vent pipe extend all the way to the
top of the chimney.
In this method a cap should also be installed
on the chimney to keep out rain. Be sure to use approved pellet vent pipe fittings. Seal pipe joints with
silicone or aluminum tape in addition to the sealing
system used by the manufacturer. Pipe size should
be increased to " using this method.
#7 Installing into an existing
chimney
This method provides excellent venting for
normal operation. This method also provides natural
draft in the event of a power failure.
In some places in the US and Canada it is required that the vent pipe extend all the way to the top
of the chimney. The pipe or liner inside the chimney
should be "diameter.
In this method a cap should also be installed
on the chimney to keep out rain.
Fig. 12
Fig. 13
venting
1 P68 Pellet Stove
#8 installing through the ceiling
Through the ceiling vent, follow PL vent
manufacturers recommendations when using wall
and ceiling pass throughs. note: do not place joints
within wall pass-throughs.
Fig. 14
PL vent manufacturer's
f i restop spacer and
support
(See Page 7 for
corner installation
clearances)
Minimum flue vent
configuration
It is recommended that outside
air be installed with this venting
configuration to reduce smoke
and creosote smell in the room
in the event of power failure.
M
in . a
bo ve g ro un d le ve l 18
"
Storm collar
Flashing
" min. " min.
12" min.
" min.
venting
Fig. 15
" min.
No insulation or
other combustible
m a t e r i a l s a r e
a l l o w e d w i t h i n
3" of the pel let
vent pipe. Unless
specified by the
pipe manufacturer
12" min. wall to outlet
36" min clearance to any
combustible material
Fig. 16
15P68 Pellet Stove
P68 AUTOMATIC IGNITION/OPERATION
room temperature Mode: This setting, see above,
will produce a room temperature of 70 degrees with the
distribution blower at medium speed.
The P68 is a fully automatic stove that features two
operating modes; Stove temperature Mode and room
temperature Mode. In Stove Temperature Mode, you
select a burn rate and the stove will remain at the same
burn rate regardless of the room temperature.
In the Room Temperature Mode the stove
constantly monitors the temperature in the room and
adjusts the size of the fire and the heat output of the stove
so that the room is kept at a constant temperature. Room
mode, in the AUTO position, has the added advantage of
turning the stove off if no heat is required and turning the
stove on again when the room temperature drops below
your desired room temperature.
room temperature Mode
Most consumers use the stove in the Room
Temperature Mode because it is the easiest and
most efficient method of keeping the room at a given
temperature. In the Room Temperature Mode, the Room
Sensing Probe constantly monitors room temperature. As
the weather changes outside and your home needs varying
amounts of heat to be at a desired temperature, the stove
will automatically increase size and heat output of the fire
so that a constant even temperature is maintained. If the
weather warms up and no heat is required the stove will
gradually shut down. When the house cools down the
stove will automatically bring the room temperature to the
precise temperature you desire.
In the Room Temperature Mode you can select
either auto or Manual modes for the igniter using the
igniter toggle switch. When the toggle switch is in the Auto
position the igniter located inside the burn pot is ready
to automatically light the fire when required. When the
toggle switch set to the Manual position the stove can
be lit manually with either a gel or a wax type fire starter.
(see lighting instructions on page 18.) With the igniter
toggle switch set in the Manual position the stove will
automatically adjust heat output, but the stove will not
automatically shut down if no heat is required. Instead it
will go to its lowest setting and remain there. The Manual
position on the igniter toggle switch lets you light the stove
manually, should the igniter fail for any reason. Secondly
if you are using the Harman battery back up system the
Manual setting will prevent the stove from turning off and
on during a power failure, which would drain the back up
battery, and possibly cause damage to the back-up or the
stove.
In the Room Temperature Mode, the distribution
blower speed can be increased or decreased by adjusting
the Room Temp/Off/Stove Temp dial between L and H.
As output of the stove increases, the speed of the blower
will increase automatically to insure that more heat is
transferred out into the room. The distribution blower will
shut off as the room reaches the set temperature, this will
prevent overheating of the room.
room temperature Mode
KeeP aPPliance dOOrS clOSed
while in OPeratiOn. Maintain all
SealS in gOOd cOnditiOn.
16 P68 Pellet Stove
Stove temperature Mode
In the Stove Temperature Mode and with the igniter
toggle switch in the Auto position, the stove will light
automatically and can be adjusted to the desired setting
using the same temperature control dial as is used in
the Room Temperature Mode. The heat output and fuel
consumption will remain constant regardless of room
temperature. The settings from 1 to 7 on the inner ring
of the dial provide for relative heat output settings with
1 being low and 7 being the maximum.
In Stove Temperature Mode, the stove will not
automatically shut off unless the stove runs out of fuel
or is turned off.
never pull the plug to shut down the stove. This will stop
the combustion blower and smoke will escape through
window and door gaskets.
When the igniter toggle switch is set to manual in this
mode, the distribution blower will not turn on with a
temperature dial setting from 1 to 5. The advantage of
this mode is to allow the operator to have a large viewing
fire without blowing extra heat into the room.
During manual operation, with the temperature dial
set at # or less, the distribution fan will not operate. A #
on the temperature dial and a #5 on the feed adjuster is
approximately 80% output. It is not necessary to operate
the distribution blower below this point. Therefore, the
control allows a higher burn rate ( a larger viewing fire)
without an excess of hot air blowing into the room.
An example of when to use the Manual Stove
Temperature Mode is if you want to watch a large fire
and the room is already up to temperature. The Stove
Temperature Mode allows you to have a larger fire and
a lower sound level, without the distribution blower.
nOte: during the use of this mode, if you keep
increasing the temperature dial setting to increase
the fire size, the distribution blower will automatically come on when the eSP temperature reaches
350o F, or 81% output.
Feed adjuster Knob
For most premium grade pellet fuels the Feed Adjuster
Knob should be set at . If higher ash fuels are used
the setting should be increased to 5 or 6. Also higher
settings are required if you would like to get the
maximum heat output from the stove. At the maximum
burn rate (with the temperature dial on 7/90° and the
feed adjuster at 6) there should be 1" or more of ash on
the front of the burn pot. If there is less than 1" of ash,
turn the feed adjuster knob down to a lower setting.
P68 AUTOMATIC IGNITION/OPERATION
Shut down Procedure
The best way to shut down the stove is simply let it run
out of pellets. The stove will shut down automatically.
Alternatively, you can turn the Mode Selector to “off”.
This will cause the fire to gradually die down and go out.
The fire will not go out immediately and may take more
than an hour to fully shut down.
If the stove is left to run out of fuel, you may get a 6
blink status light. If this happens simply reset the control
board by turning the mode selector to OFF and back
ON.
The setting above will produce continuous maximum heat
output with the distribution blower at full speed.
Stove temperature Mode
The setting above will produce continuous medium heat
output with the distribution blower at low speed.
17P68 Pellet Stove
nOtice:
Be Sure there is no fuel or other combustibles
in the ash pan prior to lighting.
igniter Switch to"autO"(up position)
Make sure the unit is plugged into a 120 VAC, 60
HZ electrical source. The power light should be the
only light lit.
1. turn Mode Selector to "OFF".
2. Fill hopper with pellets.1
. clean burn pot with scraper, if necessary.5
. if starting after an empty hopper, turn Feed
adjuster to "teSt" (for one 60 second cycle).2
This will feed pellets into the auger tube and also
allow you to check the motors for operation.
nOte: the auger motor will not operate with the
hopper lid, view door, or ash pan door open.3
5. turn Feed adjuster to #4.4
6. Flip the igniter Switch up into the "AUTO"
position.
7. turn the temperature dial to desired room
temperature.
8. turn Mode Selector to Room Temperature or
Stove Temperature.
9. Fill hopper with pellets and remove ashes as
required.6
P68 autOMatic Start uP
helpful hints
1. Fines are small pieces of broken pellets (sawdust). Fines do not
flow easily and often build up on the hopper funnel bottom angles.
You can push these fines into the feeder opening and then fill the
hopper with pellets. As the system works, they will be burned. Or
you can clean them out before filling the hopper.
2. The "TEST" cycle will operate the feeder motor for exactly one
minute. Turning to "TEST" again and again may purge too much
fuel into the burn pot causing excessive smoke on start-up.
3. The firebox low pressure switch and the hopper lid position switch
will not allow the auger motor or the igniter element to operate if the
hopper, view door or the ash pan door are open.
4. Adjust Feed Rate. If this is your first fire or you are trying different
pellets, set the feed adjuster to #4, Fig. 17. This is a conservative
number and will probably need to be increased. After you know a
feed rate setting that works well, use that setting. Remember, if your
feed rate is too high you may waste fuel.
5. This is usually a weekly maintenance procedure. Cleaning the
burn pot with the scraper with a small amount of new fuel in the
bottom is not a problem. First, scrape the ashes on the front of the
burn pot into the ash pan. Then, scrape the top surface of the burn
pot downward into the base of the burn pot. When the stove is ignited
these scrapings will be pushed out by the feeder and burned.
6. The ash pan can hold the ashes from approximately 1 ton of
premium fuel. This means the ashes will only need to be emptied
a few times a year.
7. Setting the feed adjuster # for maximum burn: With the unit
burning in "AUTO", turn to "Stove Mode" and put the fan on "H".
Set the Temperature Dial to #7. Allow the unit to burn for about 30
minutes and check ash on front of burn pot. Fig. 18. If the ash line
is larger than 1", turn the feed adjuster from #4 to #5. Allow another
30 minutes of burn time and check again. If , at #6 setting, a 1" or
less ash bed is not obtainable, it is not a problem. The 1" ash bed
is only at maximum burn rate and at most normal settings the ash
bed will be larger.
Fig. 17
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".
warning
OnlY uSe wOOd Pellet Fuel. dO nOt burn
garbage in StOve.
SeeHint #7.
Fig. 18
1"Flame Guide
Starting First Fire
18 P68 Pellet Stove
The P68 Pellet Stove is capable of manual operation. This also allows the operator
to manually control operation during an emergency (i.e. igniter failure, or when using
certain generators or other auxilliary power source.)
The unit can be switched between "AUTO" and "MANUAL" at any time during
operation.
igniter Switch to "Manual"
room temperature Mode
The fire will have to be lit with starting gel and a
match, or started automatically, see "Automatic Operation" on Page 15. Turn to "Manual" position after the
ignition cycle begins.
The difference between "AUTO" Room Temperature Mode and "Manual" Room Temperature Mode is
that the fire will not go out as the room temperature
goes above the control board setting. The unit can only
go to low burn and will remain there until it runs out
of fuel or until more heat is needed and the feed rate
increases. Feed rate adjustments and dial settings are
the same as "AUTO" settings. The blower will shut off
completely if the temperature on the ESP is too low.
igniter Switch to "Manual"
Stove temperature Mode
The advantage of this mode is to allow the operator to have a large viewing fire without blowing extra
heat into the room.
During operation, with the temperature dial set at
# or less, the distribution fan will not operate. A # on
the temperature dial and a #5 on the feed adjuster is
approximately 80% output. It is not necessary to operate the distribution blower below this point. This control
setting allows a higher burn rate (a larger viewing fire)
without an excess of hot air blowing into the room.
An example of when to use the Manual Stove
Temperature Mode is if you want to watch a large fire
and the room is already up to temperature. The Stove
Temperature Mode allows you to have a larger fire and
a lower sound level, without the distribution blower.
nOte: during the use of this mode, if you keep
increasing the temperature dial setting to increase
the fire size, the distribution blower will automatically come on when the eSP temperature reaches
350o F, or 81% output.
P68 Manual ignitiOn/OPeratiOn
This setting will produce a large viewing fire
without a distribution blower operating.
Manual Stove temperature Mode
Room Temperature Mode: This
setting, see below, will produce a
room temperature of 70 degrees
with the distribution blower at
medium speed.
19P68 Pellet Stove
P68 Manual Start uP
igniter Switch to"Manual"
(down position)
Make sure the unit is plugged into a 120
VAC, 60 HZ electrical source. The power light
should be the only light lit.
1. turn Feed adjuSter to desired feed rate.
No.  is good for most pellets.
2. turn the MOde SelectOr to “OFF” and
then to the desired mode. This will reset control and start the combustion motor.
3. turn the teMPerature dial to the desired
setting.
4. clean burn pot with scraper if necessary.5
5. Fill burn pot with pellets, only level with front
edge. (Do Not Over Fill).
6. add starting gel on top of the pellets. Stir gel
into pellets for fast lighting.
7. light starting gel with a match, and close the
door. Operation will begin when the fire reaches
the proper temperature.
nOte: the auger motor will not operate with the
hopper lid, view door, or ash pan door open.3
8. Fill hopper with pellets and remove ashes
as required.1, 6
"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".
warning
helpful hints
1. Fines are small pieces of broken pellets (sawdust). Fines do not
flow easily and often build up on the hopper funnel bottom angles.
You can push these fines into the feeder opening and then fill the
hopper with pellets. As the system works, they will be burned. Or
you can clean them out before filling the hopper.As the system
works, they will be burned.
2. The "TEST" cycle will operate the feeder motor for exactly one
minute. Turning to "TEST" again and again may purge too much
fuel into the burn pot causing excessive smoke on start-up.
3. The firebox low pressure switch and the hopper lid position switch
will not allow the auger motor or the igniter element to operate if the
hopper, view door or the ash pan door are open.
4. Adjust Feed Rate. If this is your first fire or you are trying different
pellets, set the feed adjuster to #4, Fig. 19. This is a conservative
number and will probably need to be increased. After you know a
feed rate setting that works well, use that setting. Remember, if your
feed rate is too high you may waste fuel.
5. This is usually a weekly maintenance procedure. Cleaning the
burn pot with the scraper with a small amount of new fuel in the
bottom is not a problem. First, scrape the ashes on the front of the
burn pot into the ash pan. Then, scrape the top surface of the burn
pot downward into the base of the burn pot. When the stove is ignited
these scrapings will be pushed out by the feeder and burned.
6. The ash pan can hold the ashes from approximately 1 ton of
premium fuel. This means the ashes will only need to be emptied
a few times a year.
7. Setting the feed adjuster # for maximum burn: With the unit
burning in "AUTO", turn to "Stove Mode" and put the fan on "H".
Set the Temperature Dial to #7. Allow the unit to burn for about 30
minutes and check ash on front of burn pot. Fig. 21. If the ash line
is larger than 1", turn the feed adjuster from #3 to #4. Allow another
30 minutes of burn time and check again. If , at #6 setting, a 1" or
less ash bed is not obtainable, it is not a problem. The 1" ash bed
is only at maximum burn rate and at most normal settings the ash
bed will be larger.
Fig. 20
Fig. 19
Fig. 21
1"
See Hint #7.
warning
OnlY uSe wOOd Pellet Fuel. dO nOt burn
garbage in StOve.
Starting First Fire
nOtice:
Be Sure there is no fuel or other combustibles
in the ash pan prior to lighting.
20 P68 Pellet Stove
P68 autOMatic ignitiOn eSP cOntrOl
Feed adjuster
Sets the maximum
feed rate
Test
Runs all motors at full
speed for one minute to
check operation. After
two minutes the stove
will go to minimum burn
and the blowers will
alternate from high to
low every minute to
remind you that you are
still in "Test Mode".
Igniter switch
Set to appropriate
Start-Up mode.
Distr ibut ion Blower
s p e e d a d j u s t m e n t
range.
L = low
H = high
V a r i a b l e s p e e d
anywhere between L
and H; although as the
stove temp. goes up ,
so does the low end of
the scale.
Temp dial
Allows you to adjust the room temperature in Room
Temp Mode using the outer scale marked in degrees
Fahrenheit. It also allows you to adjust the stove
temperature while in Stove Temp Mode using the inner
scale marked from 1 to 7.
Mode Selector
Allows you to choose between
Room Temp Mode, Stove Temp
Mode, or OFF. Also allows you
to vary the distribution blower
speed by turning the knob to
the high or low side of each
mode.
Power Light
Indicates power to the
control.
Indicates power to the
feed motor.
Indicates power to the
igniter
Indicates power to
combustion blower
Status Light
Will be lit in either stove
or room temp mode
when pointer is not
within off position band
except after normal shut
down. Blinks to indicate
errors listed below.
Indicates power to
distribution blower.
Status light error messages:
3 blinks: Indicates an incomplete ESP circuit, or that
the ESP (Exhaust Sensing Probe) Has gone out of
range a specific number of times. If the stove seems
to be functioning properly. Perform a manual reset*.
If the code persists, contact your dealer.
4 blinks: Can occur only in Room Temp Mode and
indicates Room Sensing Probe failed or not installed.
If a Room Sensing Probe is then installed, the status
light will automatically reset.
5 blinks (in igniter auto. Mode Only): Indicates that
the unit has failed to light within the 6 minute start
cycle. To reset - Turn Mode Selector to "OFF", then
turn to either mode again.
6 blinks : Indicates that the control has calculated
poor or incomplete combustion occurring for more
than 50 minutes.
A six blink status may be set if the stove is allowed
to run out of pellets. To reset, turn mode selector to
"OFF" then back on to the desired mode. If the unit
was not out of pellets, see Troubleshooting section,
Page 28, for more details.
* Manual reset- disconnect power cord for a few
seconds and reconnect. If error still occurs call your
Dealer.
Dealer Diagnostic Port
For dealer maintenance
only. Requires special DDM
monitor supplied to Harman
Dealers exclusively.
21P68 Pellet Stove
These units are pre-tested at the factory with exactly
120 Volts A.C., 60 Hz. They are checked and adjusted
for firebox tightness, gasket leakage, motor operation
and igniter operation. The P68 is then factory set at a
mid-point adjustment and in most cases will not need any
adjustments. nOte: the factory low draft setting may
not be correct for the unit's permanent installation
conditions.
The control board on the P68 is equipped with a low
draft adjustment port. Located on the control face just
to the right of the igniter light. This voltage adjustment
is provided to allow the unit to be adjusted for the
household voltage where the unit is going to be in
permanent operation. nOte: the line voltage varies
from area to area and often home to home.
The low draft voltage should be adjusted to achieve
the most efficient burn on low burn or "maintenance".
This voltage adjustment allows the installer to change
the low voltage set point approximately 10 volts. This
adjustment should be done by the installer during set
up because a draft meter reading is required to insure
proper set up.
If the unit is not adjusted properly, it does not cause
a safety concern. If the unit is adjusted too high, only
effiency is lost. If the unit is adjusted too low, the low
draft pressure switch will not allow the feed motor or the
igniter to operate.
C o m b u s t i o n
Motor Speed
Control
Low draft only
set point.
The small straight
screwdriver slot is
plastic; therefore,
the unit can be
adjusted while in
operation.
Fig.22
Fig. 2
A simple draft test should be performed after
completing the flue pipe installation. To record the results
for future reference:
1. Plug unit into a 120VAC, 60 HZ outlet.
2. Close the hopper lid, front view door, and the ash pan.
Neither pellets or a fire are required for this test.
. With the mode selector in the "OFF" position, turn
the feed adjuster to "TEST".
. Record the high draft_____in W.C. (Normal is -.50
to -.60) The control will be on the High Draft for a total
of 2 minutes.
5. After 2 minutes, the combustion motor will go down to
low draft and the distribution blower will go on high. Allow
approximately 15 seconds to pass for the combustion
motor to slow before checking the low draft.
6. If the low draft is between -.5 and -.5, record the
reading _____ in W.C. If the reading is higher, slowly
turn the set screw counter-clockwise until the draft
lowers. If the reading is lower, very slowly turn the set
screw clockwise until the draft increases.
nOte: the test mode alternates from high to low
draft every 60 seconds. if more time is needed
for draft adjustment, wait until the next low draft
cycle.
nOte: in some cases, the draft may not go as low
as -.35 to -.45 even with the set screw completely
counter-clockwise. ideally, you should just set it as
low as possible.
low draft voltage adjustment
Draft Meter bolt
hole location
On a P68 the
draft test hole is under
the left rear corner of
the firebox.
P68 low draft voltage adjustment
22 P68 Pellet Stove
The room sensor is a small temperature sensor on the end of a 60" gray wire. This sensor is
installed much like a standard wall thermostat. Because it is so small, it can be hidden along the trim
of a doorway or even up the leg of a coffee table.
There is a remote room sensor port on the rear of
the unit for easy external connection. Use standard
18-2 thermostat wire to extend the distance to the
desired location (50' maximum). The room sensor
should be installed in the location where you want
to control the temperature.
In most installations locating the room sensor
behind the stove near the distribution fan works well
because the sensor monitors the room air being
drawn into the distribution fan.
NOTE: Distances of more than 25 feet from
the unit or in another room are not recommended.
The room sensor is essential for the P68's excellent
efficiency.
NOTE: it is recommended that the room
sensor be installed, even if only installed on the
rear of the unit as a return air sensor.
Fig. 2
room Sensor installation
Fig. 25
room Sensor and rear Shield installation
rear Shields
5/16" Hex Head
Screws (3 on
each side)5/16" Hex Head
Screws (3 on
each side)
The rear insulated shields are split in the middle for
easy removal. Each shield has () 5/16" hex head
screws. Two (2) that only need to be loosened, and
one (1) that needs to be completely removed, to
allow the shield to slide away from the unit. nOte:
it is not recommended that the unit be operated
with the shields removed, due to the hot and
moving parts which they protect.
Room
Sensor
Port
2P68 Pellet Stove
Scraping the burn pot:
Whenever adding fuel to the hopper, take the time
and scrape the grate surface of the burnpot, using the
scraper tool provided. This can be done while a fire is
burning. Wearing heat resistant gloves, open the firebox
door. Scrape any accumulated ashes from in front of the
fire, into the ash pan. Now, scrape under the fire, in a
downward direction, to loosen any carbon deposits. Do
not scrape the fire out of the pot. Whatever you loosen
will be pushed out with the flow of new fuel into the pot.
(Fig.)
removing ashes:
After approximately 1 ton of pellets has been burned,
it will be necessary to empty the ash pan.
ashes should be placed in a metal container
with a tight fitting lid. The closed container of ashes
should be placed on a noncombustible floor or on
the ground, well away from all combustible materials, pending final disposal. If ashes are disposed of
by burial in soil or otherwise locally dispersed, they
should be retained in the closed container until all
cinders have thoroughly cooled.
It is recommended that the stove is cold and shut
down when removing ash pan.
1. Pull on latch handle and remove ash pan. Use ash
pan handle to carry and dispose of ashes.
2. Slide the ash pan back into the stove and latch the
door by pushing down on the latch handle.
cleaning:
The stove should be shut-down and thoroughly
cleaned after each ton of pellets consumed. The cleaner
the stove, the more efficient it will be.
note: Fuel with higher ash and moisture content will
require more frequent cleanings.
1. Shut down stove and disconnect power cord to
insure that all motors are stopped.
2. Clean heat exchanger with scraper as shown in fig 27.
3. Brush or scrape the inside of the stove to remove fly
ash.
4. Scrape burnpot with flat end of scraper provided with
the stove. Inspect the holes on the burnpot surface.
See Fig. .
5. Open burn pot clean-out. Clean fly ash from burn pot
and replace cover.
6. Remove ash pan.
Scraper
Blower Cover
Latch
Blower
Wheel
Flue
Outlet
Heat Exchanger Fins
Fig 27
Maintenance
Combustion
Blower Cover
Blower Cover
Latch
Fig 26
cleaning the door glass
• Always use a soft cloth and glass cleaner (such as Windex, or a mixture of vinegar & water) to clean the glass.
• Do not use razor blades or any other hard object to scrape the glass.
Whenever wood is burned, there is a potential for
creosote formation. The venting system should be
inspected periodically during the heating season to
determine if a creosote buildup has occurred. If a
significant layer of creosote has accumulated (3 mm
or more), it should be removed to reduce the risk of a
chimney or venting system fire.
2 P68 Pellet Stove
Exposed blower wheel
and flue opening, NOTE:
ESP probe is visible.
Blower cover
removed.
ESP
probe
7. Remove combustion blower cover by turning the
blower cover latch vertical, see Fig.26. Sliding the
cover out of the slot on the left.This will expose the
combustion blower wheel and flue outlet, Fig.27.
8. Clean the combustion blower wheel with a brush and
a vacuum cleaner. Note: Do not use a household
vacuum to clean the stove. We recommend that you
use a shop vacuum that is equipped with a fine dust
filter called a HEPA filter or a vacuum specially made
for fly ash and soot. using a vacuum which is not
equipped with a fine dust filter may clog and disperse fly ash and soot into the room.
NOTE: THE STOVE MUST BE COMPLETELY OUT
BEFORE YOU VACUUM THE STOVE. LIVE PEL-
LETS, IF SUCKED INTO THE VACUUM WILL LIgHT
THE VACUUM ON FIRE AND MAY ULTIMATELY
CAUSE A HOUSE FIRE.
9. Use a brush to clean the flue, being careful not to
damage the ESP probe, see Fig. 30. The flue goes
straight through into the vent pipe (Fig.27) therefore,
the vent pipe can also be cleaned to some extent
through the flue outlet.
10. Reinstall blower cover and relatch.
11.Slide ash pan into stove and latch the door.
Fig. 30
Fig. 31
Fig. 33
Be careful not to
damage ESP probe
when cleaning with
brush.
Soot and Fly ash
Formation and Need for Removal- The products of
combustion will contain small particles of fly ash.The fly
ash will collect in the exhaust venting system and restrict
the flow of the flue gases. Incomplete combustion, such
as occurs during startup, shutdown, or incorrect operation of the room heater will lead to some soot formation
which will collect in the exhaust venting system. The
stove should be cleaned after each ton of pellets (50
bags) and the venting system inspected and cleaned
yearly, after each heating season.
Maintenance
Burn pot
Clean-out
plate
Latch "open "with blower
cover partly removed. Burn
pot clean-out is open.
Latch "closed "with blower
cover in place. Burn pot
clean-out is closed.
Fig. 29Fig. 28
ESP
Probe
25P68 Pellet Stove
burn Pot cleaning and Maintenance
1. Scrape the top holed surface and sides of the burn
pot.(Fig ) It is not necessary to completely remove all
material from the burn pot. The excess will be pushed
out during the next use.
2. Loosen the (2) wing thumb screws on the lower front
angle of the burn pot. (Fig. )
. Lift off the clean-out cover (Fig.5) to open the bottom
clean-out chamber. (Fig.6)
. Clean ash buildup from inside the chamber while
cover is off. Use the scraper to tap on the top front
edge of the burn pot. This will help knock pieces of
ash, loosened by the scraping process, down through
the holes. It also helps knock scale off of the igniter
element.
Figure 36
The igniter is made to be removable for service
by insulated male/female wire connectors. These
connections between the hot leads (the wires inside
the burn pot) and the cold leads (the wires from the
control board) are always pulled to the inside rear of
the feeder body. (not coiled inside the burn pot.)
It is very important that these connections are
to the inside rear of the feeder body. Also, the extra
wire of the igniter wire service loop must be pulled out
through the rear of the feeder and tied up so that it will
not be caught and/or damaged by any moving parts.
WaRNINg
use caution when cleaning burn pot clean-out
chamber. do not damage the high temperature
igniter wires.
Fig. 36
DaNgER
Disconnect the power to the unit before
removing cover.
Igniter Element
Igniter hot lead wires
(high temperature)
Viewed from below through the ash pan opening.
note: the hot lead/cold lead connection
must always be pulled to the rear of the
feeder body before operation.
P68 Maintenance - burn Pot
Fig. 34
Loosen wing screws
Fig. 35
26 P68 Pellet Stove
Your new Harman Stove viewing door gasket has
been factory set, however over a period of time some
minor adjustment may be necessary. The easiest way
to check the adjustment of the door gasket is to take
a small piece of paper or a dollar bill (when the stove
is not burning) and open the door, place the paper
between the face of stove body and the gasket at the
top center of the door, close the door. You should have
a slight amount of resistance when you try to pull the
paper out. Repeat this process on the bottom center
of the door. If the paper is loose then some adjustment
is necessary.
To adjust the door, the stove must be turned off and
cold. Open the door, loosen the 2 bolts shown (see
Fig. 7) and bump the latch adjuster (Fig. 8) toward
the back of stove, snug bolts and test for proper seal
as described above. Once the proper seal is attained,
open the door and finish tightening the bolts. If proper
adjustment cannot be accomplished, then a new
gasket should be installed.
Over a period of time the gasket will wear out and
a new gasket will have to be installed. To install a new
gasket you must remove the old gasket. After the
gasket is removed the gasket channel should be free
of all loose particles. The gasket cement used to hold
the gasket in place is RTV (HIgH TEMPERATURE)
silicone. Put a bead of RTV silicone in the bottom of
the gasket channel, then install the new gasket and
close the door. Allow to dry for several hours before
lighting the stove. After the RTV silicone has cured, the
door will have to be adjusted for proper sealing. If you
have just replaced the door gasket, the latch adjuster
must be pulled towards the front of the stove. Follow
the procedure mentioned above.
door hinge retainers:
Some stoves have experienced the door pins working
up and out of the load door hinges during normal
opening and closing of the door. To stop this from
occurring, there are two /8” retainer clips that are in
the hardware pack sent with the stove. They are to be
installed onto the load door hinge pins after the trim
has been installed and the door is mounted onto the
stove body and ready for use.
To remove the load door for any service or to change
the trim, the retainer clips must be removed and may
be damaged. Replacements can be ordered through
your Harman Dealer (Part #3-31-94807031) or a 3/8”
retainer clip may be purchased at your local hardware
store.
P68 Maintenance - gasket adjustment
Fig. 37
Latch Adjuster
Bolts
Fig. 38
The 3/8" retainer
clips will go on
each hinge pin,
below the hinge.
27P68 Pellet Stove
The glass in your Harman stove is a special ceramic glass.
Do not abuse the glass by striking or
slamming the door.
Never burn the appliance if the door
glass is cracked or broken.
Replace only with Harman supplied
glass.
Soot and/or fly-ash may accumulate on the
viewing glass, and will ocassionally need to
be cleaned. Clean the glass with a soft cloth
and mild glass cleaner. Do not clean the
glass when hot, and avoid the use of abrasive cleaners.
glass replacement
Carefully remove all remaining glass and
gasket materials prior to replacing the glass.
Lay the door face down on a flat surface.
Remove the glass retainers and screws.
Apply the gasket material to the face of the
new glass. Lay the glass into the door, making sure that the glass is contained within
the channels and raised areas of the door
itself. Lay the glass retainers into position and install the screws. Tighten each screw evenly to avoid making
any stress points.


• Retainers and screws
glass
Adhesive gasket
Door Frame
P68 Maintenance
Pellet fines may accumulate in the feeder body over
a period of time; therefore, a yearly inspection and
cleaning of this must be performed.
To clean out fines:
1. Remove right rear cover panel.
2. Remove wing nuts and feeder cover on the right
side of the feeder.
3. Use a vacuum cleaner to remove all fines.
. Reinstall feed cover, wing nuts, and right rear
cover panel.
Pellet Fines may build up in this area
5/16" Hex Head
Screws (2 on
each side)
5/16" Hex Head
Screws (2 on
each side)
28 P68 Pellet Stove
StOve dOeS nOt Feed
1. No fuel in hopper.
2. Firebox draft may be too low for sensing switch in
feeder circuit to operate. check for closed doors,
loose or missing gasket on doors or hopper lid.
. Hopper lid must contact the lid position switch.
. Feed motor will not run until the ESP control
senses a certain temperature. Maybe you did not
put enough fuel or starting gel in the burn pot before
manually lighting the fire.
5. Restriction in the hopper or feeder. Remove all
fuel and examine. Clear the obstruction.
6. Feed motor has failed.
PartiallY burned PelletS
1. Feed rate too high.
2. Poor air to fuel mixture. (Check burn pot cleanout cover and air intake).
. Burn pot or heat exchanger tubes may need to
be cleaned.
. Combination of all the above.
5. #6 status blink: A 6 blink control board status
indication is caused by poor or incomplete combustion. The circuit board has the ability to track the
combustion through feed settings and ESP temperatures. When the control board has calculated
poor or incomplete combustion, it will shut down
the unit as a safety feature. (Poor or incomplete
combustion is a contributor of creosote which may
cause a chimney fire)
A 6 blink status may be caused by several
things:
1. Blocked or partially blocked flue.
2. Blocked or partially blocked inlet air.
a. Backdraft damper on the inlet pipe may be
stuck closed.
b. If outside air is installed, the inlet cover may
be blocked.
3. The air chamber under the burnpot may be filled
with fines and small bits of ash.
4. The holes in the burnpot may be getting filled
with ash or carbon buildup.
5. Combustion blower fan blades may need
cleaned.
6. Fuel restrictions as noted above.
SMOKe SMell
Seal the vent pipe joints and connection to stove
with silicone. The exhaust vent is the only part of
the system that is under positive pressure.
Fire haS gOne Out- check for status light.
1. No fuel in hopper.
2. Draft is too low, blocked flue.
3. Something is restricting fuel flow.
. Hopper lid not closed properly.
5. Feed motor or combustion blower has failed.
SMOKe iS viSible cOMing Out OF vent
1. Air-fuel ratio is too rich.
A. Feed rate too high.
B. Draft too low caused by a gasket leak.
lOw heat OutPut
1. Feed rate too low
2. Draft too low because of gasket leak.
. Poor quality or damp pellets
. Combination of 1 and 2.
P68 trouble-Shooting
cleaning burn Pot
Whenever your stove is not burning, take the
opportunity to scrape the burn pot to remove carbon
buildup. A vacuum cleaner is handy to remove the
residue. be sure the stove is cold if you use a
vacuum.
Carbon buildup can be scraped loose with the
fire burning using the special tool provided with your
stove. Scrape the floor and sides of the burn pot. The
carbon will be pushed out by the incoming fuel. Always
wear gloves to do this.
removing ashes
Turn the Temp Dial to number 1 approximately
0 minutes before removing ashes. This will result in
a cooler stove and ash pan.
Maximum Feed Adjuster settings are not needed
in most cases. Operating in the normal range (#)
is recommended when maximum heat output is not
required. The ESP prevents the stove from being
over-fired.
Keep the stove free of dust and dirt.
helpful hints
Fuel
Pellet fuels are put into  categories in terms of
ash content. Premium at 1% or less, Standard at %
or less and all others at % or more.
The P68 is capable of burning all  categories
of pellets due to a patented feeder and burn pot system.
It should be noted, however, that higher ash
content will require more frequent ash removal, scraping of the burn pot, and may provide less BTU's per
pound. Normally, standard and high ash pellets cost
less than premium pellets and can be cost effective
when burned in the P68.
The moisture content of pellets must not exceed
8%. Corn should be 15% or less. Higher moisture will
rob BTU's and may not burn properly.
Pellet fuel should not be stored within the stove
installation clearances or within the space required for
charging and ash removal. See Page 7.
29P68 Pellet Stove
weight 290 lbs.
blower 135 cfm
Feed Rate approx. 1lb. to 8 lbs per hr
hopper capacity 76 lbs
Fuel wood Pellets
Flue Size 3 inch
Outside Air Size 2 3/8" I.D. inch
Fuse rating 6 amp
Specifications
Options
Floor Protector
The P68 Steel Floor Protector measures 25 inches
wide by  inches deep. It is made of 20 gauge
steel. This is the minimum size for floor protection
with this unit.
Part# 1-00-06727
20 gauge steel
floor protector "
25"
Hopper Extension
The hopper extension allows you to put more pellet fuel
in the hopper and extends burn time on one load of
pellets. The hopper extension adds room for 60 pounds
to the existing hopper capacity. The extension seals to
the unit hopper with three latches. Some models will
require a knockout
be removed from
the un i t hopper
prior to installing
the extension. (See
next page)
Part #1-00-0866
0 P68 Pellet Stove
Side heat Shields
Side heat shields are available to reduce the clearance
to combustible materials.
Part #1-00-06716
OPtiOnS
direct vent wall Passthrough Kit
The Direct Vent Wall Passthrough
K i t ( p a r t # 1 - 0 0 - 6 7 7 0 7 7 )
incorporates safe venting passage
through a wall, and provides
attachment to outside air in one
component.
decorative tile/grey Slate Options
The decorative slate tiles measure 11.938" x 5.938". The
tile frame, which is part of the trim kit, is not necessary
to hold the tile or slate in place on the stove. The tile
can be adhered to the recessed area of the ash door
using high temp silicone. There are  slate choices. See
dealer for samples.
The Brushed Stainless deer cutout, pictured below, is
another option available. This cutout reveals the color
of the stove through the cut out shapes.
5.
93
8"
11.938"
frame tile/slate
On the rear of the stove hopper there is a
hole to fasten the hopper extension into place.
On some units, this hole will need to be
opened. You will notice a small uncut area on
rear of the knockout. Push downward with a
screwdriver or like tool until the knockout is
rotated as far back to the inside of the hopper
as possible. This will allow the swell latch of the
hopper extension to fully expand to the bottom
side of the hole for a proper seal.
Special note for Hopper Extension Installation.
trim Kit
Part #1-00-06717 Available in gold, Nickel or Brushed
Stainless. Includes the door trim, ash door frame, and
the ash lip. (Decorative tile or slate not necessary)
1P68 Pellet Stove
P68 wiring diagram
FE
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la ck o n w h it e ad h es iv e. Pa rt n u m b er 3
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R
ev B
Harman pellet burning, free-standing stoves and inserts have been tested to ASTM E1509 for burning shelled corn
in a mixture with wood pellets. The listing approves up to a 50% corn and 50% pellet mixture. Different mixtures of
corn will have distinctively different burn characteristics depending upon moisture content and variety. The operator
should closely monitor the stove’s operation when burning a new corn/pellet mixture or a different variety of corn,
and make any necessary adjustments to feed rate. Since corn is typically higher in ash and moisture content, cleaning
and ash removal will be needed more frequently.
Operation in Stove Temp mode
Set feed adjuster to # 3. Set temperature knob to #3, Turn mode selector knob onto “Stove Temp” mode. After the fire
has lit, watch that the fuel does not feed too fast that it pushes the red glowing fuel bed off of the burn pot grate. If it
does, lower the feed adjuster setting or use a lower percentage of corn in the mixture. After the stove has burned for
10 minutes and the entire fuel bed is burning, the feed adjuster and temperature knobs may be adjusted for higher
heat output if desired. Maximum feed has been reached when the fire bed is about ½ to 1 inch from the end of the
burn pot. Settings will vary with different types, moisture levels and mix ratios of corn. If you are having difficulty burning a 50% corn / 50% wood pellet mixture, try a lower percentage of corn.
Operation in Room Temp mode
Set feed adjuster to # 2 or # 3. Set temperature knob to desired amount. Turn mode selector knob onto “Room Temp”
mode. After the fire has lit, watch that the fuel does not feed too fast that it pushes the red glowing fuel bed off of the
burn pot grate. After the stove has burned for 10 minutes and the entire fuel bed is burning, the feed adjuster may be
set to a higher output level if desired. Maximum feed has been reached when the fire bed is about ½ to 1 inch from
the end of the burn pot. It is recommended that after burning at the desired settings, turn the stove off and allow it to
cool, then turn it back on in “Room Temp” mode and watch the stove restart and verify correct operation. Settings will
vary with different types, moisture levels and mix ratios of corn. If you are having difficulty burning a 50% corn 50%
wood pellet mixture, try a lower percentage of corn.
Changes to Maintenance Schedule
Wood pellets average around 6% moisture content or less. Corn will be 14 or 15% moisture. With more moisture in
the fuel, more maintenance will be incurred. Burn pot scraping may need to be done once per day. The ash pan will fill
more quickly and may need emptied weekly. Most importantly, remove the burn pot cleanout cover weekly to clean
the air passage and the igniter element. Excessive buildup on the igniter may lead to shortened igniter life.
Venting Consideration: Check with your venting manufacturer regarding possible exclusions when a mixture of corn
and pellets is burned.
Addendum for Burning Corn and Pellet Fuel Mixture
Loosen these two wing screws for access
to clean the air passage and igniter.
* For P38+ model, follow Stove Temp instructions. Keep feed rate on #3 or
above when using a wall thermostat.
2 P68 Pellet Stove
P68 Pellet Stove
addendum
Minimizing Smoke During Loss of Power using battery back-up
harmanTM strongly recommends installing battery back-up to minimize entry of smoke into the
room in the event of power loss.
Your pellet/biomass burning appliance relies on a combustion blower to remove exhaust. A power failure
will cause the combustion blower to stop. This may lead to exhaust seeping into the room. Vertical rise in
the venting may provide natural draft. It is, however, no guarantee against leakage.
there are two harmanTM approved battery back-up options for your appliance:
uninterruptible Power Supply (uPS) UPS battery back-ups are available online or at computer and
office equipment stores. Your HarmanTM appliance with Rev E or later software available beginning in
November 2010 may be plugged directly into a HarmanTM approved UPS:
The APC (American Power Conversion) model #BE750G and the TrippLite model
INTERNET750U are tested and approved. Other brands or models may not be compatible.
When power is lost, a fully charged UPS will power a safe, combustion blower only shut-down. Your
appliance will pulse the blower every few seconds to clear exhaust until the fire is out. nOte: the uPS
provides safe shut-down only. it is not intended for continued operation.
Your appliance will recognize when power is restored. What happens depends on ESP temperature and
whether it is equipped with automatic ignition:
in “automatic” setting, units equipped with automatic ignition will respond to the set point and
ESP temperature and resume normal operation.
in “Manual” setting or for units without automatic ignition:
If the ESP is cool, the appliance will remain shut down.
If the fire is out and the ESP is still warm, the feeder may restart. Since the fire is out, the
ESP temperature will not rise. The unit will then shut-down, and may flash a six-blink status
error. (See ESP error codes)
If the fire is still burning, it will resume normal operation.
Contact your dealer if you have questions about UPS compatibility with your appliance.
harman Surefire 512h battery back-up The 512H connects to a 12 volt deep cycle battery that will run
your appliance for up to eight (8) hours. It includes a trickle charge feature that keeps your battery
charged when power is available. nOte: if the power is out for longer than battery life, smoke
leakage may still occur unless your stove has been safely shut down.
cautiOn! always keep appliance doors and hopper lid closed and latched during
operation and during power failures to minimize risk of smoke or burn-back.
cautiOn! use only harmantM approved battery back-up devices. Other products may not
operate properly, can create unsafe conditions or damage your appliance.
 P68 Pellet Stove
5P68 Pellet Stove
Service Parts
09/10
P68 Pellet
Part number list on following page.
1-70-00688-1 (black), 1-70-00688-2 (charcoal), 1-70-00688-3 (goldenfi re), 1-70-00688-4 (Metallic blue),
1-70-00688-5 (honey glo), 1-70-00688-10 (Mojave red), 1-70-00688-12 (Forest green)
1 25
2 & 3
4
5
8
6
7
9
10
11
12
13
16
15
14
17
18
19
20
21
22
24 23
beginning Manufacturing date: n/a
ending Manufacturing date: activeSteel Pellet Stove
Service Parts
09/10
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at depot
iteM description cOMMentS Part nuMber
1 Hopper Assembly
Pre 008280309 1-10-06709 Y
008280309 thru
00828286- Order
both parts
1-10-07907S
1-00-22108
Post 008274286 1-10-07907S
Hopper Switch Post 00828286 -20-22108 Y
2 Feeder Assembly Pre 008280309 1-10-07806
2.1 Air Intake Damper Assembly 1-10-0666W
2.2 Air Intake Weldment 1-10-0661
2. Feeder Weldment 1-10-677150 Y
2. Slide Plate Assembly 1-10-0807 Y
2.5 Pusher Arm Assembly 1-10-06719 Y
2.6 Feed Cover and gasket 2 Sets 1-00-677152 Y
2.7 Auger Assembly -50-0065 Y
2.8 Cam Bearing -1-01 Y
2.9 Bearing Flange w/Hardware 1-00-005 Y
2.10 Bracket, gear Motor Pkg of 2 1-00-015 Y
2.11 Gear Motor, 4 RPM 3-20-60906 Y
2.12 Cast Cam Block -00-0015 Y
Feeder Repair Kit 1-00-677150 Y
gasket, Feeder, Air Intake Pkg of 6 --7222-6 Y
Additional service parts on following page.
P68 Pellet
#2 Pre Serial number 008280309 Feeder assembly
beginning Manufacturing date: n/a
ending Manufacturing date: active
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.1
2.2
Service Parts
09/10
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at depot
iteM description cOMMentS Part nuMber
3 Feeder Assembly Post 008280309 1-10-07906A
.1 Pellet Feeder Gear Motor, 6RPM 3-20-09302 Y
.2 UL Feeder Cam -1-01 Y
. 9MM Silicone Tube 1-00-511427 Y
. Pellet Air Intake Assembly 1-10-06810A
.5 gasket Feeder Air Intake Pkg of 6 --7222-6 Y
.6 UL Feeder Air Intake 1-10-72222
.7 gasket Ultra Air Intake Pkg of 10 --677160-10 Y
.8 Ultra Feeder Weldment 1-10-7212 Y
3.9 UL Feeder Pusher Arm 1-10-677187W Y
.10 Fines Defl ector no longer available 2-00-67718-10
.11 gasket, UL Feeder Cover 1-00-677122 Y
.12 Slide Plate Assembly 1-10-677121A Y
.1 UL Feeder Auger Assembly -50-00565 Y
.1 Bearing Flange w/Hardware 1-00-005 Y
.15 UL Feeder gear Motor Bracket w/grommet 1-00-2706 Y
.16 UL Feeder Cam Block -00-67715 Y
gasket, Hopper Throat --677185
Additional service parts on following page.
Service Parts diagram
P68 Pellet
3.7
3.5
3.4
3.3
3.2
3.1
3.16 3.15
3.8
3.9
3.10
3.11
3.12
3.13
3.14
#3 Post Serial number 008280309 Feeder assembly
beginning Manufacturing date: n/a
ending Manufacturing date: active
Service Parts
09/10
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement parts for
your appliance please provide model number and serial number. All parts listed in this manual may
be ordered from an authorized dealer.
Stocked
at depot
iteM description cOMMentS Part nuMber
 Flue Tail Pipe -00-2727 Y
5 Auger Motor Cover 2-00-0670P Y
6 Auger Motor Shield 2-00-0667P Y
7 Differential Switch -20-6866 Y
8 Distribution Blower -21-2267 Y
9 Combustion Motor 3-21-08639 Y
10 Rear Cover Left 2-00-0668-1P Y
11 Rear Cover Right 2-00-0668-2P Y
12
Door Latch Assembly
1-00-0671 Ycontains: latch adjustment, ShcS(1/4-20 X 1), nut (Fhn 1/4 X
20z5), jam nut (hX jam 1/4-20z) Steel bushing,
1 Comb Intake Weldment 1-10-08516S Y
1 Retainer Assembly 1-10-085S Y
15 Ash Pan 1-10-05800 Y
16 Ash Door Assembly 1-10-0672S
17 Bolt on Hinge 2-00-06952B
18 Cast Door Frame -00-06718P
19 glass Panel -0-00688 Y
20
Door Handle Assembly
1-00-249119 Y
contains: handle, 6 mm washer, ShcS, handle, dowel, Plunger, SSS, bhcs
Ball Plunger, 5/16 X 1/2 Black Pkg of  -1-5500-
Front Door Latch 3-00-249119 Y
Wooden Handle , Load Door Pkg of 2 1-00-00249 Y
21 Burn Pot Weldment 1-10-0672 Y
Flame guide -00-0000 Y
Clean Out Cover 2 Sets 1-00-0662 Y
Thumb Screw Pkg of 10 -1-782108-10 Y
22 Fire Brick 4-1/2 x 9 x 1-1/4” Pkg of 7 1-00-900450125 Y
2 Hopper Heat Shield 2-00-06715B
2 Feeder Opening Cover 2-00-77826L
25 Circuit Board 1-00-05886 Y
Circuit Board Plate-Studded w/label 1-10-0827
Knob, Contol Board/D-Shaft 25 Sets 1-00-015605 Y
Additional service parts on following page.
beginning Manufacturing date: n/a
ending Manufacturing date: active
P68 Pellet
Service Parts
09/10
IMPORTANT: THIS IS DATED INFORMATION. When requesting service or replacement
parts for your appliance please provide model number and serial number. All parts listed
in this manual may be ordered from an authorized dealer.
Stocked
at depot
iteM description cOMMentS Part nuMber
Arrow Burn Pot Scraper Pkg of 10 2-00-77850-10
Cradle Assembly
Igniter Holder, Cradle, & Flat Bottom  Sets 1-00-06620 Y
Fan Blade, 5" Double Paddle (Combustion Blower) -20-502221 Y
Fuse, 6 Amp Pkg of 5 3-20-49447-5 Y
gasket, 1/" Rope Black W/PSA Per Inch (glass) 1-00-212 Y
gasket, /8" Rope White LD Per Inch (Ash or Load Door) 1-00-00888 Y
gasket, Burn Pot/Tailpipe Pkg of 5 1-00-0781 Y
gasket, Overfi re Air Burn Pot --7211 Y
gasket, Hopper 1-00-0028 Y
Glass Clip Pkg of 4 1-00-249140
Hopper Lid and Hinge 1-10-09109 Y
Igniter -20-677200 Y
Latch Ball Spring Bracket 2-00-0671
Latch, Swell/Hopper 3-31-199110 Y
Hopper Muffl er and Fittings 1 set 1-00-18186618 Y
Outside Air Vent 1-10-09542
Room Sensor 3-20-00906 Y
Thermister Probe (ESP Probe)
Pre 008280309 1-00-00744 Y
Post 008280309 3-20-00844 Y
Thermostat Extension -20-00607 Y
Wiring Harness -20-08727
P68 Pellet
beginning Manufacturing date: n/a
ending Manufacturing date: active
1P68 Pellet Stove
Service & Maintenance log
date Of Service Performed by description Of Service
2 P68 Pellet Stove
Service & Maintenance log
date Of Service Performed by description Of Service
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