HearthStone Stowe DX 8322 User manual

Hearthstone Quality Home Heating Products, Inc. ®
Stowe DX
(Model 8322)
GAS-FIRED DIRECT-VENT HEATER
Owner's Manual
Installation & Operating
Instructions
Read This Manual in Its Entirety
Operate And Maintain This Gas Heater
According To This Instruction Manual.
SAVE THESE INSTRUCTIONS!
Stowe Model 8322
Manual: 6400-40449
R: 3 - 5/23/2011
WARNING: FOLLOW THE INFORMATION IN
THESE INSTRUCTIONS EXACTLY, IF NOT, A FIRE
OR EXPLOSION M AY RESULT C AUSING
PROPERTY DAMAGE, PERSONAL INJURY OR
LOSS OF LIFE.
WARNING: DO NOT STORE OR USE G ASOLINE
OR ANY OTHER FL AMMABLE VAPORS AND
LIQUIDS NEAR THIS O R ANY OTHER G AS
APPLIANCE.
WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch electrical switches; do not use the phone
in your building.
Immediately call your gas supplier from a phone
outside the structure. Follow your gas supplier’s
instructions.
If you cannot reach your gas supplier, call the fire
department or 911.
A qualified installer, service agency, or gas supplier must
perform installation and service of this app liance. In the
Commonwealth of M assachusetts, all installation of gas
lines and gas fittings must be performed by a licensed gas
fitter or licensed plumber.
AVERTISSEMENT: ASSUREZ-VOUS DE BIEN
SUIVRE LES INSTRUCTIONS DONNÉ D ANS
CETTE NOTICE POUR RÉ DUIRE AU MINIMUM LE
RISQUE D’INCENDIE OU POUR ÉVITER TOUT
DOMMAGE MATÉERIEL, TOUTE BLESSURE O U
LA MORT.
AVERTISSEMENT: NE P AS ENTRESPOSER NI
UTILISER D’ESSENCE NI D’AUTRE VAPERURS
OU LIQUIDES INFLAMMABLES DANS LE
VOISINAGE DE CET APPRAREIL OU DE TOUT
AUTRE APPAREIL.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:
Ne pas tenter d’allumer d’appareil.
Ne touchez à aucun interrupteur. Ne pas vous servir
des téléphones se trouvant dans le batiment où vous
vous trouvez.
Appelez immédiatement votre fournisseur de gaz
depuis un voisin. Suivez les instructions du
fournisseur.
Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le service dos incendies.
L’installation et service doit être exécuté par un qu alifié
installer, agence de service ou le fournisseur de gaz.

Intentionally Blank

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Information Sheet
Use this page to record all relevant information concerning the purchase, installation, and maintenance of your
Stowe Model 8322 Direct -Vent heater. This information will facilitate servicing, purchase of replacement parts,
and warranty claims (if necessary). Keep your original receipt in a safe place as proof of purchase.
Serial Number:
Fuel type: Natural Gas Liquid Propane
Sold by: Date of Purchase:
Address:
Phone:
E-mail Website:
Installed by: Date of Installation:
Address:
Phone:
E-mail Website:
Gas Supplier:
Address:
Phone:
E-mail Website:
Read this O wner’s Manual before installing, or operati ng your STO WE. Retain this man ual for future
reference.
SERVICE RECORD
Date Who Performed Work Work Performed Notes:
WHAT WHEN
Firebox Cleaning............. annually
Glass Cleaning................ as needed
Door Gasket.................... Replacement as needed
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Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
4
Table of Contents
INTRODUCTION ...........................................................................................................................................................5
SAFETY INFORMATION ................................................................................................................................................6
PROFLAME CONTROL SYSTEM & FEATURES................................................................................................................9
Stowe 8322 DX Model Overview................................................................................................................................ 9
Control Functions ..................................................................................................................................................... 11
SPECIFICATIONS.......................................................................................................................................................13
INSTALLATION PREPARATION....................................................................................................................................14
Codes ....................................................................................................................................................................... 14
Items Required for Installation .................................................................................................................................. 14
Packing List .............................................................................................................................................................. 14
Unpacking and Inspection ........................................................................................................................................ 15
CLEARANCES TO COMBUSTIBLES..............................................................................................................................17
Clearance to Combustibles....................................................................................................................................... 17
Hearth Requirement/Floor Protection ....................................................................................................................... 17
VENTING INFORMATION.............................................................................................................................................19
Venting Components ................................................................................................................................................ 19
Minimum Venting Installation Instructions ................................................................................................................ 22
ELECTRICAL SYSTEM INFORMATION ..........................................................................................................................25
GAS SUPPLY & CONNECTIONS..................................................................................................................................27
Gas Connections ...................................................................................................................................................... 28
HEAT WAVE BAFFLE, LOG SET, & SCREEN PLACEMENT............................................................................................29
Installation of the Heat Wave Baffle.......................................................................................................................... 29
Installation of the Log Set ......................................................................................................................................... 30
Removal of Log Set .................................................................................................................................................. 31
Completing the Installation ....................................................................................................................................... 31
LIGHTING & OPERATION ...........................................................................................................................................32
Lighting Instructions.................................................................................................................................................. 32
Initial Adjustments .................................................................................................................................................... 32
Daily Operation......................................................................................................................................................... 34
ROUTINE MAINTENANCE AND CARE...........................................................................................................................36
Cleaning ................................................................................................................................................................... 36
Monthly:.................................................................................................................................................................... 36
Annually:................................................................................................................................................................... 36
As Needed:............................................................................................................................................................... 37
PARTS LIST..............................................................................................................................................................38
TROUBLESHOOTING..................................................................................................................................................39
RATING LABEL .........................................................................................................................................................41

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Introduction
Congratulations on you r purchase of the Stowe
Model 8322, Gas-Fired Direct-Vent heater. The
Stowe, by Hearth stone, incorporates the latest in
direct vent gas technol ogy, which will provide you
with clean, efficient heat for years t o come. The
enameled or painted cast iron give s the Stowe a
pleasing look that is maintained with minimum care.
The Stowe will provide y ou with years of practical
and convenient service. Howe ver, as with any gas
appliance, the unit mu st be prope rly and safely
installed and maintained by qualif ied service
personnel to ensure safe and trouble-free operation.
Stowe Model 8322 Features:
1. Proflame Control System
2. 5-piece log set
3. Heat Wave Baffle for maximum radiant heat
output.
4. Screen Kit
5. Platinum Bright Embers
6. The option to toggle back and forth between an
Intermittent (IPI) or Continuous (CPI) pilot mode.
a. The IPI mod e allows the most efficient
use of gas, burning the pilot only when
the thermostat calls for t he burner to
ignite.
b. The CPI mode runs the pilot
continuously keeping the firebox warmer
thus promoting better draft in colder
climates.
7. Battery backup for functionality during power
outages.
Control System Features:
1. Proflame GTMF System
a. Thermostatic Remote Control
i. Six (6) flame levels, adjustable
via the remote
ii. Six (6) blower speeds,
adjustable via the remote
b. Thermostatic mode to turn on/off based
upon room temperature.
c. “Smart” thermostatic mode to modulate
flame levels automatically as the unit
approaches the set point temperature.
d. Additional outlet controlled by the
remote.
2. “Child-safe” lock-out on remote control.
3. “Low Battery” indicator for Transmitter on remote
control
4. Integral Blower
Part # Description
8322-0010DX Deluxe Matte Black
8322-0020DX Deluxe Brown Enamel
Read this Owner’s Manual
Operate and maintain this ga s heater according to
the instructions in this manual. For your safety, and
years of trouble free o peration, read th is manual in
its entirety.
Heater Must Be Installed and Maintained By
Qualified Service Personnel
Verify the gas connections and venting systems
meet the req uirements of local, re gional or national
installation codes. Qualified service personnel must
inspect the gas heater before use, and at lea st
annually.
Manufactured & warranted by:
Hearthstone Quality Home heating Products, Inc.
317 Stafford Ave.
Morrisville, VT 05661
www.hearthstonestoves.com
[e-mail]
5

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Safety Information
Your Stowe i s an attra ctive and extre mely efficient
heater, utilizing today’s best tech nologies. By
following a f ew simple safety pre cautions and by
performing minimal maintenance, the unit will remain
appealing while providing years of q uality
performance.
The installation must conf orm to local codes or, in
the absences of local codes, the current National
Fuel Gas Code, ANSI Z223.1 (NFPA 54) o r
CAN/CGA B149 Installation Code. (Installer
l’appareil selon les codes ou réglements locaux, ou,
en l’absence de tells réglements, selon les Codes
d’installation CAN/CGA B149.)
CAUTION: DO NOT USE THIS APPLIANCE IF ANY
PART WAS UNDER WATER. IMMEDIATELY CALL
A QUALIFIED SERVICE TECHNICIAN TO INSPECT
THE HEATER AND TO REPLACE ANY PART OF
THE CONTROL SYSTEM AND GAS CONTROL
THAT HAS BEEN UNDER WATER. (NE PAS SE
SERVIR DE CET APPAREIL S’IL A ÉTÉ PLONGÉ
DANS L’EAU, COMPLÉTEMENT OU EN PARTIE.
APPELER UN TECHNICIEN QUALIFIÉ POUR
INSPECTOR L’APPAREIL ET REMPLACER TOUTE
PARTIE DU SYSTÉME DE CONTRÔLE ET TOUTE
COMMANDE QUI ONT ÉTÉ PLUNGES DANS
L’LAU.)
During the first few hours of operation the appliance
may produce smoke and/or odor. This is no rmal
during the first several burns and also after l ong
periods when the stove is not burned. During these
initial burns, open a window(s) to assist in the
removal of the smoke/odor.
The appliance and its i ndividual shutoff valve mu st
be disconnected from the gas supply pi ping system
during any pressure testing of that system at test
pressures in excess of ½ psig. (3.5k Pa). The
appliance must be i solated from the gas supply
piping system by closin g its individual manu al
shutoff valve during any pressure testing of the gas
supply piping system at te st pressures equal to or
less than ½ psig (3.5k Pa).
Fire Hazard
Do not store or use gasoline or other flammable
vapors or liquids in the vicinity of this ap pliance.
Locate the Stowe out of traffic areas and away from
furniture, draperies, clothing, and flammable
material.
Vent Only to the Outside
Never vent the gas heater to other rooms or
buildings.
Service Caution
If you believe your Stowe is not, in any way,
performing properly, immediately discontinue
operation until the unit is inspected and approved by
qualified service personnel. Prior to servicing the
unit, turn the gas to the valve off, an d disconnect
any electrical source. Ensure the unit is cool prior to
servicing and cleaning. Replace any safety screen,
guard, or component removed during servicing prior
to operation. Use of any components not supplied by
Hearthstone on the stove voids all wa rranties. Do
not substitute components.
Proper Fuel
This gas heater is designed to burn natural gas (NG)
or with conversion, liquid p ropane (LP). Never burn
any fuel g as not inten ded for use with this u nit.
Never burn paper, wood, or other ma terials in thi s
appliance.
This heater is factory eq uipped to bu rn natural ga s
(NG). To burn propane (LP), you must purchase LP
conversion kit #97-56104.
This appliance is only for use with the type(s) of gas
indicated on the rating pl ate. This ap pliance is no t
convertible for use with other g ases, unless a
certified kit is used. Cet appareil doit être atilisé
uniquement avec les types de gas indiqués sur la
plaque signalétique. Ne pas l’utiliser avec d’autres
gas sauf si un kited conversion certifié est installé. )
WARNING: THIS GAS APPLIANCE MUST NOT BE
CONNECTED TO A CHIMNEY FLUE SERVING A
SEPARATE GAS OR SOLID-FUEL BURNING
APPLIANCE
WARNING: DO NOT OPER ATE THE APPLIANCE
WITH THE FRONT GL ASS REMOVED, CRACKED,
OR BROKEN. REPL ACEMENT OF GL ASS
SHOULD BE DONE BY A LICENSED OR
QUALIFIED SERVICE PERSON. ONLY OPEN
FRONT FOR ROUTINE SERVICE. DO NOT SL AM
FRONT OR STRIKE GLASS.
WARNING: HEARTHSTONE RECOMMENDS THAT
ONLY AN NFI CERTIFIED SERVICE TECHNICIAN
INSTALLS, AND REPAIRS THIS APPLIANCE. A
QUALIFIED SERVICE TECHNICIAN MUST
INSPECT THE APPLIANCE BEFORE USE, AND AT
LEAST ANNUALLY. MORE FREQUENT CLEANING
MAY BE REQUIRED DUE TO EXCESSIVE LINT
FROM CARPETING, BEDDING MATERIAL, PETS,
ETC. IT IS IMPERATIVE THAT THE CONTROL
COMPARTMENTS, BURNERS, AND CIRCULATING
AIR PASSAGES OF THE APPLIANCE ARE KEPT
CLEAN AND FREE OF OBSTRUCTIONS.
(S’ASSURER QUE LE BRÛLEUR ET LE
6

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
COMPARTIMENT DES COMMANDES SONT
PROPRES. VOIR LES INSTRUCTIONS
D’INSTALLATION ET D’UTILISATION QUI
ACCOMPAGNENT L’APPAREIL.)
Hot Surfaces
Certain exposed surfaces of the Sto we will reach
high temperatures during normal operation.
Clearances to combustibles must be maintained, as
specified in the “Clearances To Combustibles”
section of this manual.
DUE TO HIGH TEMPER ATURES THE APPLIANCE
SHOULD BE LOCATED OUT OF TR AFFIC AND
AWAY FROM FURNITURE, DRA PERIES,
CLOTHING AND FLAMMABLE MATERIALS. EN
RAISON DES TEMPÉRATURES ÉLEVÉES,
L’APPAREIL DEVRAIT ÊTRE INSTALLÉ DANS UN
ENDROIT OÙ IL Y A PEU DE CIRCULATION ET
LOIN DU MOBILIER ET DES TENTURES
CHILDREN AND ADULTS SHOULD BE ALERTED
TO THE HAZARDS OF HIGH SURFACE
TEMPERATURES AND SHOULD ST AY AWAY TO
AVOID BURNS TO SKIN O R CLOTHING IGNITION.
LES ENFANTS ET LES ADULTES DEVRAIENT
ÊTRE INFORMÉS DES DANGERS QUE POSENT
LES TEMPÉRATURES DE SURFACE ÉLEVÉES ET
SE TENIR À DISTANCE AFIN D’ÉVITER DES
BRÛLURES OU QUE LEURS VÊTEMENTS NE
S’ENFLAMMENT.
CAREFULLY SUPERVISE YOUNG CHILDREN
WHEN THEY A RE IN THE S AME ROOM AS THE
APPLIANCE. TODDLERS, YOUNG CHILDREN,
AND OTHERS M AY BE SUSCEPTIBLE TO
ACCIDENTAL CONTACT BURNS. A PHYSICAL
BARRIER IS RECOMMENDED IF THERE ARE AT
RISK INDIVIDUALS IN THE HOUSE. TO RESTRICT
ACCESS TO A FIREPLACE OR STOVE , INSTALL
AN ADJUSTABLE SAFETY GATE TO KEEP
TODDLERS, YOUNG CHIL DREN, AND OTHER AT
RISK INDIVIDUALS OUT OF THE ROOM AND
AWAY FROM HOT SURF ACES. LES JEUNES
ENFANTS DEVRAIENT ÊTRE SURVEILLÉS
ÉTROITEMENT LORSQU’ILS SE TROUVENT
DANS LA MÊME PIÈCE QUE L’APPAREIL. LES
TOUT PETITS, LES JEUNES ENFANTS OU LES
ADULTES PEUVENT SUBIR DES BRÛLURES
S’ILS VIENNENT EN CONTACT AVEC LA
SURFACE CHAUDE. IL EST RECOMMANDÉ
D’INSTALLER UNE BARRIÈRE PHYSIQUE SI DES
PERSONNES À RISQUES HABITENT LA MAISON.
POUR EMPÊCHER L’ACCÈS À UN FOYER OU À
UN POÊLE, INSTALLEZ UNE BARRIÈRE DE
SÉCURITÉ; CETTE MESURE EMPÊCHERA LES
TOUT PETITS, LES JEUNES ENFANTS ET TOUTE
AUTRE PERSONNE À RISQUE D’AVOIR ACCÈS À
LA PIÈCE ET AUX SURFACES CHAUDES.
CLOTHING OR OTHER FLA MMABLE MATERIAL
SHOULD NOT BE PL ACED ON OR NE AR THE
APPLIANCE. ON NE DEVRAIT PAS PLACER DE
VÊTEMENTS NI D’AUTRES MATIÈRES
INFLAMMABLES SUR L’APPAREIL NI À
PROXIMITÉ.
CLEAN THE AREA AROUND, UNDER, AND BEHIND THE
UNIT ON A REGULAR BASIS TO PREVENT THE
ACCUMULATION OF DUST AND LINT.
Ceramic Logs, Burner, & Baffle
If the decorative cera mic log, burner, or baffle
material supplied with the Stowe i s damaged or
parts are missing, they must be replaced with th e
same, or approved Hearthstone replacement parts.
These components affect the com bustion quality
and safety of the heater. Do not repl ace ceramic
logs, the bu rner, or baffle with unapproved ceramic
components or any other material.
We recommend you always wear gloves and safety
goggles while handling the ceramic log set, Heat
Wave baffle, and burner materials.
Electrical Hazard
If present, any three-prong grounded plug must be
plugged directly into a properly grounded three-
prong receptacle. Do n ot cut o r remove the
grounding prong from any plug or otherwise attempt
to circumvent the grounding protection provided with
the unit. The Stowe must be electrically grounded in
accordance with local codes, or in the absence of
local codes, with the Nation al Electrical Code,
ANSI.NFPA 70 in the U.S. or CSA C22.1 Canadian
Electrical Code in Canada.
Do Not Light Pilot or Burner by Hand
The pilot lig ht on this ga s heater i s lit by using an
electronic ignition module as described elsewhere in
this manual. Never attempt to light the pilot or main
burner by hand with a match or lighter.
Mobile Home Installations
This appliance may be installed a s an aftermarket
appliance in a permanently located, manufactured
(mobile) home, where not prohibited by local codes.
(Cet appareil peut être installé dans un maison
préfabriquée (mobile) déjá installée á demeure si les
réglements locaux le permettent.
7

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
8

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Proflame Control System & Features
NOTE: OPEN DOOR UNDER THE ASH LIP AND REMOVE MODESTY PANEL FOR ACCESS TO ELECTRICAL
AND GAS CONNECTIONS.
Stowe 8322 DX Model Overview
Proflame GTMF System
Figure 1 – Proflame GTMF System (Remote color may vary)
The Proflame GTMF i s a modular remote control
system that directs the functions of Stowe DX. T he
Proflame GTMF System i s configured to control the
on/off main burner operation, its flam e levels, and
provides Manual and Smart thermostatic control of
the hearth appliance. The system controls two
remotely actuated 120V/60Hz power outlets. The Fan
outlet controls the fan spe ed through six levels, and
the Auxiliary outlet either on or off. There i s also an
additional constantly powered 120V/60Hz outlet. The
system has battery backup p ower for burne r
operation and control during power outages (see
page 25 for specifications).
emote Transmitter
d with a thermostatic
R
The Stowe DX come s equippe
remote control tran smitter. The easy to read LCD
display shows all functional abilities as well as a
childproof lockout and l ow battery indicator. It
displays room temperature readout, set temperature
readout and function status. The remote transmitter is
powered by three 1.5 volt AAA batteries. A Mode Key
is provided to index between the features and a
Thermostat Key is u sed to turn on/off or in dex
through thermostat functions.
9

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Receiver
The Receiver accepts commands via radio frequency
from the Re mote to operate the a ppliance. The
Receiver is powered (6V DC) by the Fan Cont rol
Module and uses four 1.5 volt AA type batteries fo r
backup during power outages. The Receiver’s slider
switch is set to o ne of three positions: ON (Manu al
Override), REMOTE (Re mote Control) or OFF. The
ON selection turns the valve on (to high) if the
Remote becomes inoperative.
Fan Control Module
The Fan Control Module (FCM) is the main power
supply for the entire system when 120v AC is
available. The FCM is p art of the blower a ssembly
(packaged separately). The FCM provides two 120V
remotely controlled outlets, and one constantly
powered outlet. The F CM allows the remote to
control the fan unit throug h 6 spee ds and turns the
auxiliary outlet on and off. This modul e also powers
the Receiver and Ignition Module with 6v DC, making
the batteries in the Receiver a backup power source
expanding the life of the b atteries. When 120V power
is not available the FCM will not operate.
The FCM is equipped with a three-prong (grounding)
plug for protection against shock hazard and should
be plugged directly into a properly grounded three-
prong receptacle. Do not cut or remove the grounding
prong from the plug.
Proflame DFC Ignition Module
This is the comman d center for the a ppliance. The
DFC Module allows the pilot to run in th e Intermittent
(IPI) mode or the Constant (CPI) mode. It signals the
burner to light or shut do wn and provides the ignitor
with the ele ctricity needed for sparki ng. The DF C
Module is powered by the FCM when 120V power is
available or by the batteries in the Receiver during a
power outage.
SIT Modulating Gas Valve
The remote transmitter can modulate t he valve and
the flame to 6 different settings between hig h and
low. You ca n modulate the flame via the remot e
yourself or by setting the remote control to the Smart
Thermostat modulation mode. Smart mode mea ns
that as the room temperature approaches the limit set
for shut down the valve will automatically gradually
step down the flame hei ght. The rev erse happens
when the ro om cools - the valve will automatically
gradually increase the flame height.
Pilot Assembly
The pilot assembly con sists of a pilot hood, sensor
rod, and ignitor. The ignitor sends a spark to the pilot
hood which ignites the gas and lights the pilot. With
the pilot lit th e sensor rod is e ngulfed by the flame,
flame rectification occurs and the a ppliance remains
lit. If the se nsor does not stay engulfed by the flame
the main burner will not li ght and the pilot will shut
down.
10

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Control Functions
Pilot Mode
Continuous Pilot (CPI): Running the Stowe 8322 in CPI mode will keep your pilot running even when the
thermostat does not call for heat and when the burner is not lit. This i s an advantage in cold climates or under
windy conditions. The “standing pilot” help s to ke ep the venting warm a nd generate some draft within the
system. The standing pilot also keeps the firebox warm – greatly minimizing, or eliminating condensation
formation on the glass during startup. The ignitor will automatically spark whenever the pilot mode is switched to
CPI, regardless of the position of the receiver switch.
Intermittent Pilot (IPI): Using the IPI mode i s a m ore efficient use of fuel a s the pil ot only ignites when the
thermostat calls for heat.
Figure 2 – Pilot Mode Switch
Remote Receiver
The Receiver is normally powered by the Fan Control Module or by four 1.5V AA batteries during a power
outage. The Receiver switch can be set to three different positions:
On: Manual override allowing the valve to function and ignite the burner without the remote transmitter. The
ignitor will spark automatically.
Remote: Remote Transmitter controls all functions of components.
Off: Turns off the stove. If CPI mode is selected, pilot will remain lit.
PRG: Used to synchronize the Transmitter and Receiver initially, and after each battery change (see page 37).
Figure 3 – Receiver Detail
11

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Remote Transmitter
Figure 4 – Remote Transmitter Function Keys (remote color may differ from shown)
ON/OFF Key: Controls the main burner, blower, and
the modulation of both.
Thermostat Key: This is the function that sets either
the Manual or Smart thermostatic control.
UP/Down Arrow Key: Adjusts the thermostat
temperature range, flame settings, and fan speed.
Mode Key: Toggles through the component to be
controlled (burner, blower or auxiliary outlet)
The transmitter features a user-friendly layout with a
Blue LCD Screen for easier viewing.
Figure 5 - GTMF Remote Transmitter Display Data
12

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Specifications
LISTED: Gas-Fired Direct-Vent Fireplace Heater
Model: Stowe DX Direct-Vent Gas Fireplace
Heater (8322)
Testing Agency: Intertek Testing Services
NA, Inc. (ITS)
Tested to: ANSI Z21.88-2009, CSA 2.33
2009, CAN/CGA2.17-M91
Certified for Canada, CSA P.4.1
Approved for Mobile Home Installation (see
page 7)
Certified for use by:
Board of State Examiners of Plumbers & Gasfitters
100 Cambridge Street, Room 1511
Boston, MA 02202
www.mass.gov
Figure 6 -Model 8322 Dimensions
Specification NG LP
INPUT RATING (Btu/hr) 0-2000 ft 25,000 25,000
INPUT RATING (Btu/hr) 2000-4500 ft 24,200 24,800
ORIFICE SIZE (DMS) 0-2000 ft 41 53
ORIFICE SIZE (DMS) 2000-4500 ft 42 54
MANIFOLD PRESSURE - LO SETTING (in. W.c./kpa) 1.6/0.4 6.4/1.59
MANIFOLD PRESSURE - HI SETTING (in. W.c./kpa) 3.5/0.87 10.0/2.48
INLET PRESSURE - MINIMUM (in.w.c./kpa) 5.0/1.24 12.0/2.99
INLET PRESSURE – MAXIMUM (in. w.c./kpa) 7.0/1.74 13/3.22
MINIMUM INPUT RATING LO SETTING (btu/hr) 18,000 21,600
MAXIMUM OUTPUT (btu/hr) 0-2000 ft 17,350 19,100
13

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Installation Preparation
Codes
Adhere to all local codes or, i n their absence, the
latest edition of THE NATIONAL FUEL GAS CODE
ANSI Z223.1 (NFPA 54) or CAN/CGA B149 (Installer
l’appareil selon les codes ou règlements locaux, ou,
en l’absence de tels règlements, selon les Codes
d’installation CAN/CGA-B149.)
Installation Codes can be obtained from:
AMERICAN NATIONAL STANDARDS
INSTITUTE, INC.
1430 BROADWAY
NEW YORK, NY 10018
www.ansi.org
NATIONAL FIRE PROTECTION ASSOCIATION,
INC.
BATTERY MARCH PARK
QUINCY, MA 02269
www.nfpa.org
The appliance when installed must be electrically
connected and grounded in accord ance with lo cal
codes or, in the ab sence of local code s, with t he
current NFPA 70-Natio nal Electrical Code or CS A
C22.1-Canadian Electric Code.
A manufactured home (mobile) OEM installation must
conform to the Manufactured Home Construction and
Safety Standard, Title 2 4 CFR, Part 3280 (U.S.) o r
Standard for Manufactured Home Installation,
ANSI/NCBCS A225.1 o r Standard for Gas Equipped
Recreational Vehicles and mobile Housing, CSA
Z240.4.CAN/SCA Z240 MH (Canada). This appliance
is only for use with the type(s) of gas indicated on the
rating plate. You must p urchase a conversion kit for
this appliance to burn propane. Cet appareil peut être
installé comme du matériel d’origine dans une
maison préfabriquée (É.-U. seulement) ou mobile et
doit être installé selon les instructions du fabricant et
conformément à la norme Manufactured Home
Construction and Safety
Standard, Title 24 CFR, Part 3280 aux États-Unis ou
à la norme CAN/CSA-Z240 Série MM, Maisons
mobiles au Canada. Cet appareil doit être utilisé
uniquement avec les types de gaz indiqué s sur la
plaque signalétique.
This appliance is equipped for use at 0 to 2000 fe et
(0-610 meters) altitude. (Cet appareil est equipè pour
des altitudes compries entre 0 et 2000 pieds (0-610
m) seulement.)
Items Required for Installation
External regulator (for propane (LP) only)
LP conversion kit (not included, for propane
only))
Piping which complies with local codes
Pipe sealant approved for use with
propane (LP) (resistant to sulfur compounds).
Manual shutoff valve
Sediment trap (see page 27)
120 volt, 15 Amp electrical service
Pipe wrench
Phillips head screwdriver
7/16-inch wrench
3/16” hex wrench
Other parts as required by local code
Safety Glasses
Gloves
Packing List
1- Stowe 8322 DX Gas-Fired Heater
1- Owner’s Packet Envelope (manual, warranty card)
1- Heat Wave Baffle (box on pallet)
5- Decorative Ceramic Logs (in separate box)
1- Enamel Touch-up Paint (in firebox)
1- Blower Assembly (installed on stove)
1- Accessory Box (on pallet) containing:
1- Remote Control w/batteries
1- 1 Package of four AA Batteries
1- Bag of Platinum Bright Embers
Note: Vent kits and components are supplied
separately. Failure to use the venting
components approved by Hearthstone for this
appliance will void your warranty.
14

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Unpacking and Inspection
Hearthstone packages your Stowe to withstand
normal shipment without damage. However, damage
can still occur during transit. Take care to inspect for
damage when unpacking and installing the unit.
DO NOT INST ALL, OR PUT INTO SERVICE, A
DAMAGED OR INCOMPLETE HEATER.
Remove the shrink-wrap and other packaging
materials taking care not to damag e the stove’s
finish. Inspect the Sto we for vi sible or concealed
damage. The unit shoul d be square and true. The
sheet metal parts should be smooth and free of
bends and dents. Any enameled cast iron should be
free of chips or cracks. If visible or concealed
damage is fo und or suspected, contact your deale r
for instructions.
Always use gloves and eye protection when handling
the decorative ceramic fire log s, burner, and Heat
Wave baffle. Use ca re when handling these parts as
they are fragile and subject to damage and breakage
if handled roughly.
See the fi rebox access instructions on page 16.
Unpack and inspect the logs for damage. Inspect the
ceramic burner. Open the other boxes and inspect
the components. If log, burne r, baffle, or any othe r
component damage is encountered, contact your
dealer for a replacement. Otherwise, set the logs and
other components aside until called for during the
installation.
Dismounting from Pallet
With the accessory boxes removed and set a side,
remove the four lag screws that fasten the unit to the
pallet. Take care not to mar or chip the stove’s finish.
Have someone help lift the stove off the pallet, taking
care to avoid damaging components mounted under
the stove.
INSTALLER: Leave this manual with the appliance.
INSTALLATEUR : Laissez cette notice avec
l’appareil
CONSUMER: Retain t his manual for future
reference.
CONSOMMATEUR : Conservez cette notice
pour consultation ultérieure
15

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Firebox Access
1. Remove the grill and top of the stove (lift off). Set
carefully aside on a soft surface.
Figure 7 – Grille Removal
Figure 8 –Top Removal
2. Release the front panel by disengaging the two
spring clips at its top – tilt the front toward you
slightly and li ft it up out of the bottom slots and
set aside on a soft surface.
Figure 9 – Front Panel Retaining Clip Detail
Figure 10 – Front Panel Removal Detail
3. Reinstall by reversing the previous steps.
16

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Clearances to Combustibles
Note: Ensure clearances are in accordanc e
with local installation codes and the
requirements of th e gas supplier.
Dégagement conforme aux codes
d’installation locaux et aux exigences du
foumisseunde gaz.
Clearance to Combustibles
Due to high surface temperatures, locate the unit out
of traffic areas an d away from f urniture and
draperies. Do not place clothing and other
flammable material on or near the h eater. When
positioning the u nit always maintain adequate
clearances around air openings into the combustion
chamber and allow fo r adequate ventilation.
Minimum clearances to combustibles must be
maintained as shown in Figures 11 - 14.
Note: The rear clearance to co mbustibles is
determined by either the unit’s or th e vent pipe’s
minimum clearance, depending on whether the
installation calls for vertical rise within the room or a
rear exit, through-the-wall vent pipe.
Ensure you consider the need for access to the gas
control valve access door on the front o f the unit as
well as full access for peri odic cleaning and
servicing. Also consider clearance for the blowe r
assembly if present, or planned in the future.
CAUTION: THESE CLE ARANCES REPRESENT
MINIMUM DISTANCES IN ALL CASES, WHICH,
THROUGH TESTING IN AN INDEPENDENT
LABORATORY TO ANSI AND CSA STANDARDS,
WILL PREVENT FIRE OR SPONT ANEOUS
COMBUSTION. WE DO NOT CON TROL THE
COMBUSTIBLE MATERIALS EXPOSED TO HE AT
BY THIS PRODUCT; THEREFORE, AN
ASSESSMENT MUST B E MADE BY THE
INSTALLER TO PREVENT CONSEQUENTI AL
DAMAGE OF WALLS AND FLOORING.
Hearth Requirement/Floor
Protection
You can place the Stowe directly o n any n on-
combustible surface or on a wo od floor. Wh en
placing the Stowe on any other type of comb ustible
surface you must install a panel ma de of metal,
wood, stone, or glass u nder the a ppliance. The
panel must extending the full width and depth of the
appliance. Installations must meet all local codes.
Figure 11 - Minimum Wall Clearances
Figure 12 - Horizontal Vent Mantle Clearance
17

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Figure 13 - Snorkel Termination Mantle
Clearance
The corner clearance for the Stowe 8322 i s 4”,
measured from the ed ge of the top castings, to the
adjacent wall.
Figure 14 - Corner Clearance
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Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
Venting Information
Venting Components
Starter collar is installed by Hearthstone.
Use the follo wing instructions along with the pip e
manufacturer’s instructions to complete the
installation. Do not mix vent comp onents from
different manufacturers within the same venting
system.
Approved Venting Manufacturers
The Stowe Direct Vent (8322) is approved for
installation only with the ventin g components
provided by manufactures listed on this page.
Simpson Dura-Vent, Inc.
P.O. Box 1510
Vacaville, CA 95696-1510 800-835-4429
American Metal Products (AmeriVent)
8601 Hacks Cross Rd.
Olive Branch, MS 38654 800-423-4270
Selkirk Corporation
1301 W. President George Bush Hwy, Suite 330
Richardson, TX 75080-1139 800-992-8368
Security Chimneys International Ltd (Secure Vent)
2125 Monterey, Laval, Quebec
Canada, H7L 3T6 450-973-9999
ICC, Inc.
400 J-F Kennedy, St. Jerome, Quebec
Canada, J7Y 4B7 450-565-6336
Metal-Fab, Inc.
P.O. Box 1138
Wichita, Kansas 67201 316-943-2351
Venting Terminations
The Stowe cannot b e vented jointly with any othe r
solid fuel or gas appliance. It must be vented directly
to the outsi de of the building using a pro per
termination as li sted in this ma nual. After
determining the venting configuration for your stove,
select the vent system that will best accommodate
your installation.
CAUTION: ENSURE ALL STOVE AND
TERMINATION CAP CLEARANCES ARE
OBSERVED PER THIS OWNER’S MANUAL.
CAUTION: ENSURE THE RE IS NO WIRING OR
PLUMBING IN THE CHOSEN LOCATION.
CAUTION: DO NOT RECESS VENTING
TERMINALS INTO A WALL OR SIDING.
Approved Venting Configurations
WARNING: IN HIGH WIND AREAS AND
PARTICULARLY COLD C LIMATES IT M AY BE
NECESSARY TO HE AT YOUR VENT SYSTEM
WITH THE PI LOT PRIOR TO IGNITION OF THE
MAIN BURNER. IN THE SE INSTANCES IT IS
RECOMMENDED THAT YOU LEAVE THE PILOT
RUNNING FOR 5 MINUTE S PRIOR TO IGNITING
THE MAIN BURNER. THIS WILL ALLOW FOR
PROPER START UP AND IGNITION OF ALL
PORTS ON THE BURNER.
There are three types of venting configurations
approved for use with this appliance:
Vertical Venting/Vertical Termination
Vertical Venting/Horizontal Termination
Horizontal Venting/ Snorkel Termination
Pipe Clearances to combustibles:
1" to vertical runs
1" below and to the side of horizontal runs
2" from the top of horizontal runs
Vertical Venting and Termination
The Stowe 8 322 is a pproved for venting vertically
through a roof or ceiling. When installing a vertical
vent and/or vertical terminations you must adhere to
the following requirements:
When terminating vertically you mu st have at
least 10’ of vertical pipe.
Always maintain a minimum of 1” clearance from
all sides of t he vent system to any combustible
material.
A listed fire stop is required at a ny floor
penetration. The ope ning must be framed in
according to the ve nting manufacturer’s
instructions.
Steep roofs, nearby trees, or p redominantly
strong windy conditions can promote poor draft
or down draft condition s. In this event, an
increase to t he height of the vent may improve
performance.
A maximum of two 90 ⁰ or four 45 ⁰ elbows may
be used in vertical terminations. (This includes
the one 45⁰ elbow off the stove outlet)
Whenever possible use 45⁰ elbows instead of
90⁰ elbows as they offer l ess restriction to the
flue gases.
Vertical terminations may require additional
restriction in order to p erform as intended.
Please refer to Figures 1 9 - 2 1 to a djust your
vent restrictor accordingly
19

Hearthstone Quality Home Heating Products, Inc. Stowe DX Model 8322
All termination caps must be no less than 18”
(457mm) horizontally from any roof or vertical
surface. See Figure 15.
The termination must fall within the chart in
Figure 21.
The maximum vertical run is 35’
The vent/air intake term ination clearances above
the high side of an angled roof are as follows:
Roof Pitch Feet Meters
Flat to 6/12 1 0.3
7/12 to 9/12 2 0.6
10/12 to 12/12 4 1.2
13/12 to 16/12 6 1.8
17/12 to 21/12 8 2.4
Figure 15 - Termination Cap clearances
Prefabricated & Fireplace Chimney
Installations
The Stowe 8322 is approved for use with direct vent
chimney conversion kits in masonry or prefabricated
solid fuel listed chimneys. The follo wing installation
requirements must be followed:
The termination must fall within the chart shown
in Figure 21.
In a ma sonry chimney, a fireclay liner or listed
steel liner, must be present the entire length of
the chimney.
The maximum length of vent is 35’.
The liner must have an inside dimension or
diameter 6” or greater.
Prefabricated chimneys must be UL103 or ULC
S-629 listed and have a minim um INSIDE
diameter of 6”. Prefabricated chimneys must be
listed for the specific manufacturer’s conversion
kit.
The use of a n existing chi mney as a n air inta ke is
not listed under the ANSI Z21.88-1999-CSA 2.33-
M99 test methods; this i nstallation has been tested
and approved by Intertek Testing Services with an
appropriate test. The code auth ority having
jurisdiction must be consulted prior to proceeding
with this installation method.
Horizontal Termination
The termination must fall within the area shown
in Figures 15 & 16.
A minimum of 9" rise i s required either directly
off the heater or with the use of a minimum of a
14” snorkel.
Use a vinyl sidi ng Stand-Off when installing
against vinyl siding. The termination cap must
not be recessed into the wall or siding. Do not fill
air spaces with any type of insulation material.
A minimum 10” X10” square hole is n ecessary
for proper pipe clearance through a wall,
provided the vent is po sitioned to ma intain 2”
minimum clearance at the top. A 1” minimum
clearance must be maint ained to co mbustible
materials around the other sides.
All horizontal terminations must also comply with
the clearance specifications to adjacent
structures outlined in Figures 15 & 16.
Horizontal sections require a 1/4" rise e very 12"
of horizontal run.
NOTE: For each 90 0 elbow after 2, remove 5' from
the allowable horizontal run. For Canadian
installations: remove 4' from the allowable
horizontal run.
At minimum vertical rise, maximum horizontal
run is 10’. (If a 14” snorkel termination is used a
maximum horizontal run of 10’ is also
applicable.)
WARNING: FAILURE TO USE ONLY P ARTS
SPECIFICALLY APPROVED FOR USE WITH THIS
APPLIANCE MAY RESULT IN PROPERTY
DAMAGE OR PERSONAL INJURY.
20