Drolet ECO-35 User Manual

MODEL ECO-35

FREESTANDING

OWNER’S MANUAL

• Warning: If your appliance is not properly installed a house fire may result. For your safety, follow the
installation directions. Contact local building or fire officials about restrictions and installation inspection
requirements in your area.

• Please read this entire manual before installation and use of this pellet fuel-burning room heater. Failure
to follow these instructions could result in property damage, bodily injury, or even death.

• Save these instructions.

• Some surfaces become hot at higher feeding rates. To prevent potential burns, avoid contact with those

areas.

• This heating unit must serve as a supplementary heat source. An alternative heat source should be
available in the home if needed. The manufacturer cannot be responsible for additional heating costs
associated with the use of an alternative heat source.

• It is highly recommended that the user buys this product from a retailer who can provide installation and
maintenance advices.

Professional installation is highly recommended

Manufactured by:

Stove Builder International Inc.

Quebec City (Quebec)

CANADA

45266

INTRODUCTION

Thank you for purchasing the ECO-35 pellet stove. You are now prepared to burn wood in the most
efficient, convenient way possible. To achieve the safest, most efficient and most enjoyable
performance from your stove, you must do three things: 1) Install it properly; 2) Operate it correctly;
and 3) Maintain it regularly. The purpose of this manual is to help you do all three.

PLEASE read this entire manual before installation and use of this pellet fuel-burning room
heater. Failure to follow these instructions could result in property damage, bodily injury or
even death.

Keep this manual handy for future reference.

Your ECO-35 has been independently tested to ASTM E1509-04 Standard Specification for room
heaters, pellet fuel burning type 1, UL 2482-1998 and ULC-S627-00 Standard for Solid Fuel Room
Heaters, Oregon Administrative Rules for Mobile Homes (814-23-900 through 814-23-909) and
Installation as a Stove Heater. This pellet stove, when installed, must be electrically grounded in
accordance with local codes, or in the absence of local codes, with the National Electrical Code,

ANSI/NFPA 70 and CSA-C22.1.

This appliance is designed specifically for use only with pelletized wood. It is designed for residential
installation according to current national and local building codes as a freestanding room heater. It is
also approved as a mobile home heater which is designed for connection to an outside combustion air
source.

The stove will not operate using natural draft or without a power source for the blower systems and
fuel feed system and must not be burned with any type of coal.

This stove is designed to provide the optimum proportions of fuel and air to the fire in order to burn
free of smoke and soot. Any blockage of the air supply to or from the stove will seriously degrade its
performance and will be evidenced by a smoking exhaust and a sooting window. For best operation,
the ash content of the pellet fuel should be less than 1% and the calorific value approximately 8,200
BTU/LB. Avoid high ash content fuels because this will rapidly fill up the burn pot and eventually cut
off the combustion air supply.

Commercial and industrial installations of the ECO-35 should not be used since operational control is
often not well managed in these settings

REGISTER YOU WARRANTY ONLINE

To receive full warranty coverage, you will need to show evidence

of the date you purchased your unit. Keep your sales invoice.
We also recommend that you register your warranty online at

www.drolet.ca

Registering your warranty online will help us track rapidly the

information we need on your unit.

2

SAFETY PRECAUTIONS

• Do not operate your stove if you

smell smoke coming from it. Turn it off,
monitor it, and call your dealer. Do not unplug
it.

• Never use gasoline, gasoline-type

lantern fuel, kerosene, charcoal lighter fluid, or
similar liquids to start or “freshen up” a fire in
this stove. Keep all such liquids well away from
the stove while in use.

• Never block free airflow through the

open vents of the stove.

• Never try to repair or replace any

part of the stove unless instructions are given
in this manual. All other work should be done
by a trained technician.

• The stove will not operate during a

power outage. If an outage does occur, check
the stove for smoke spillage and open a
window if any smoke spills into the room.

• Disconnect the power cord before

performing any maintenance or repairs on the
stove.
NOTE: Turning the stove “off” does not
disconnect all power from the stove.

• Do not unplug the stove if you

suspect a malfunction. Turn the stove off,
periodically inspect it, and call your dealer.

• Keep foreign objects out of the hopper.

• Do not throw this manual away. This

manual has important operating and maintenance
instructions that you will need at a later time.
Always follow the instructions in this manual.

• Do not place clothing or other

flammable items on or near the stove.

• The viewing door must be closed and

latched during operation.

• Do not operate the stove if the flame

becomes dark and sooty or if the burnpot overfills
with pellets. Turn the stove off, periodically
inspect it, and call your dealer.

• Do not touch the hot surfaces of the

heater. Educate all children of the danger of a
high temperature stove. Young children should be
supervised when they are in the same room as
the stove.

• If the stove is installed in a room without

air conditioning, or in an area where direct
sunlight can shine on the unit, it is possible this
can cause the temperature of the stove to rise to
operational levels; one of the sensors could then
make the stove start on its own. It is
recommended that the stove be unplugged when
not in use for extended amounts of time (i.e.
during the summer months).

• Contact your local building officials to

obtain a permit and information on any
installation restrictions or inspection
requirements in your area. Notify your
insurance company of this stove as well.

• This unit must be properly installed to

prevent the possibility of a house fire. The
instructions must be strictly adhered to. Do not
use makeshift methods or compromise in the
installation.

• Allow the stove to cool before

carrying out any maintenance or cleaning.
Ashes must be disposed in a metal container
with a tight lid and placed on a non
combustible surface well away from the home
structure.

• This stove must be connected to a

standard 120 V., 60 Hz grounded electrical
outlet. Do not use an adapter plug or sever the
grounding plug. Do not route the electrical cord
underneath, in front of, or over the stove.

• The exhaust system should be

checked, at a minimum, at least twice a year
for any build up of soot or creosote.

• The exhaust system must be

completely airtight and properly installed. The
pellet vent joints must be sealed with RTV 500°F.
(260°C.) silicone sealant, and with UL-181-AP foil
tape.

• Your stove requires periodic

maintenance and cleaning. Failure to maintain
your stove may lead to smoke spillage in your
home.

• This stove is designed and approved for

pelletized wood fuel only. Any other type of fuel
burned in this heater will void the warranty and
safety listing.

• When installed in a mobile home, the

stove must be bolted to the floor, have outside air,
and NOT BE INSTALLED IN A BEDROOM (Per
H.U.D. requirements). Check with local building
officials.

• Stove Builder International Inc.

grants no warranty, implied or stated, for the
installation or maintenance of your stove, and
assumes no responsibility of any
consequential damage(s).

3

TABLE OF CONTENTS

INTRODUCTION..................................................................................................................................................2

SAFETY PRECAUTIONS....................................................................................................................................3

TABLE OF CONTENTS.......................................................................................................................................4

STOVE INSTALLATION ....................................................................................................................................6

ECO-35 FREESTANDING PELLET STOVE....................................................................................................6

CLEARANCES ...................................................................................................................................................6

COMBUSTION AIR SUPPLY ...........................................................................................................................7

WHEN OUTSIDE AIR IS NOT USED ..............................................................................................................7

VENTING............................................................................................................................................................7

EQUIVALENT VENT LENGHT (EVL)............................................................................................................8

INSTALLATION CONFIGURATIONS ............................................................................................................8

HORIZONTALLY THROUGH WALL .........................................................................................................8

VERTICALLY WITH NEW CHIMNEY SYSTEM.......................................................................................9

VERTICALLY INTO EXISTING CHIMNEY SYSTEM..............................................................................9

VERTICALLY INTO EXISTING MASONRY FIREPLACE .....................................................................10

INSTALLATION THROUGH SIDE OF MASONRY CHIMNEY .............................................................10

OPERATION .......................................................................................................................................................11

PROPER FUEL..................................................................................................................................................11

PRE-START-UP CHECK .................................................................................................................................11

BUILDING A FIRE...........................................................................................................................................11

LIGHTING PROCEDURE................................................................................................................................11

UNIT CONTROLS............................................................................................................................................12

MODE BUTTON...........................................................................................................................................12

FUEL FEED SWITCH ..................................................................................................................................12

NOISE REDUCER ........................................................................................................................................12

HEAT LEVEL ...............................................................................................................................................12

RESET ...........................................................................................................................................................12

OPENING DOOR..............................................................................................................................................12

CONVECTION BLOWERS (ROOM AIR FAN).............................................................................................12

COMBEXtm........................................................................................................................................................13

IF THE STOVE RUNS OUT OF PELLETS.....................................................................................................13

REFUELING .....................................................................................................................................................13

SHUTDOWN PROCEDURE............................................................................................................................13

SAFETY FEATURES .......................................................................................................................................13

DAMPER OPERATION ...................................................................................................................................14

OPERATING THE STOVE USING A THERMOSTAT .................................................................................15

THERMOSTAT INSTALLATION...................................................................................................................15

MODES..............................................................................................................................................................15

OPERATING SAFETY PRECAUTIONS.........................................................................................................16

MAINTENANCE.................................................................................................................................................17

ASH REMOVAL...............................................................................................................................................17

ASH DISPOSAL................................................................................................................................................17

VACCUM USE..................................................................................................................................................18

CLEANING .......................................................................................................................................................18

BLOWERS AND PRESSURE SWITCH PROBE............................................................................................19

CHIMNEY CLEANING....................................................................................................................................19

RECOMMENDED MAINTENANCE SCHEDULE........................................................................................19

4

REMOVAL AND REPLACEMENT OF BROKEN DOOR GLASS...............................................................20

TROUBLESHOOTING ......................................................................................................................................20

STOVE SHUTS OFF AND SHOWS WARNING CODE “P”.........................................................................20

STOVE SHUTS OFF AND DISPLAYS WARNING CODE “E”....................................................................21

STOVE FEEDS PELLETS, BUT WILL NOT IGNITE AND SHOWS WARNING CODE “L” ...................22

STOVE FEEDS PELLETS, BUT WILL NOT IGNITE AND SHOWS WARNING CODE “I”.....................22

STOVE STOPS FEEDING PELLETS AND SHOWS WARNING CODE “O”.............................................22

STOVE STOPS FEEDING PELLETS AND SHOWS WARNING CODE “H”.............................................23

STOVE STOPS FEEDING PELLETS AND SHOWS WARNING CODE “d”..............................................23

SMOKE SMELL COMING BACK INTO THE HOME..................................................................................23

AUGER MOTOR STOPS FEEDING PELLETS AND COMES BACK ON ..................................................23

GLASS SOOTS UP VERY FAST....................................................................................................................24

FLAME IS LAZY, DARK, AND HAS BLACK TIPS.....................................................................................24

AFTER STOVE HAS BEEN ON FOR A WHILE, THE BURNPOT OVERFILLS .......................................24

WARNING CODES ..........................................................................................................................................25

SMOKE SMELL OR SOOT BUILD-UP..........................................................................................................25

ELECTRICAL DIAGRAM ................................................................................................................................26

ELECTRIC SHOCK..........................................................................................................................................26

REPLACEMENT PARTS ..................................................................................................................................27

APPENDIX A.......................................................................................................................................................28

APPENDIX B .......................................................................................................................................................29

DROLET LIMITED LIFETIME WARRANTY..............................................................................................30

5

STOVE INSTALLATION

ECO-35 FREESTANDING PELLET STOVE

Width: 22 1/4”
Height: 28 1/2”
Depth: 25 3/16”
Weight: 190 lbs.
Flue size: 3” or 4”
Hopper Capacity: Up to 35 lbs.
(This can vary slightly depending on pellet size, length, and diameter)
EPA status: exempt
Burn rate: 1.3 lbs to 4.1 lbs per hour
BTU range: 8,200 to 35000
Electrical consumption: 3.5 Amps lighting cycle

2.5 Amps. continuous duty
Control board fuses: Main: 7.5A-250V fastblow
Igniter: 5A-250V fastblow
Electrical requirement: 120VAC 15A
Approved installations: mobile home, conventional

PREPARATION

Factory packaging must be removed, and some minor assembly work is
required prior to installation :

• The black knobs must be attached to heat exchanger rods

• The coil handle must be attached to handle rod

CLEARANCES

The ECO-35 has been tested and listed for installation in regular and
mobile homes.(refer figure 1 & 2)

SIDE WALL

BACK WALL

2" *

6"

3"

Figure 1

Back wall installation

ADJACENT WALL

2"

3"

ADJACENT WALL

3"

FLOOR PROTECTION: minimum 6” in the front and 6” on each side. The
stove must be placed on a continuous (grouted joints) non-combustible
material such as ceramic tile, cement board, brick, 3/8” millboard or
equivalent, or other approved or listed material suited for floor protection.
NOTE: ceramic tile, or any tile, requires a continuous sheet beneath to
prevent the possibility of embers falling through to the combustible floor if
cracks or separation should occur in the finished surface, this would
include floor protection for Built-in raised hearths. Check local codes for
approved alternatives.

Clearances are measured from the sides, back and face (door opening) or
stove body (refer to fig. 3).

DO NOT USE MAKESHIFT MATERIALS OR COMPROMISES IN THE
INSTALLATION OF THIS UNIT.

INSTALL VENT WITH CLEARANCES SPECIFIED BY THE VENT
MANUFACTURER.

This heating unit must serve as a supplementary heat source. An alternative heat source
should be available in the home if needed. The manufacturer cannot be resp onsible for
additional heating costs associated with the use of an alternative heat sourc e.

It is highly recommended that the user buys this product from a retailer who can provide
installation and maintenance adv ices.

Figure 2

Corner installation

6"

Figure 3

Floor protection

2"

6"

6"

6

COMBUSTION AIR SUPPLY

For a mobile home installation the stove must be connected to an outside
source of combustion air. A 3” inside diameter metallic pipe, either flexible
or rigid, may be attached to the inlet at the stove’s rear (refer to figures 4, 5
& 6). A rodent guard (minimum ¼” wire mesh) must be used at the
terminus (refer to figure 5). All connections must be secured and airtight by
either using the appropriately sized hose clamp and/or UL-181-AP foil tape.

For mobile home installations only: No combustion air supply may
exceed 10 feet.

Sources of Outside Combustion Air

• A hole in the wall behind the stove.(Figure 5)

• A hole in floor near stove rear terminating only in a ventilated

crawl space.(Figure 6)

WHEN OUTSIDE AIR IS NOT USED

If outside air is not used, it is important that combustion air be easily
available to the air inlet. A closable outside air register can be used in
tightly insulated homes.

VENTING

The ECO-35 is certified for use with a vent certified to UL-103 or ULC
S629M and a chimney type vent certified to UL-641 or ULC-S-609-M89
and ULC/ORD C441-M90, with 3” or 4” inner diameter. In Canada, we
recommend that you use a listed pellet vent that meets the ULC S-609 ­M89 and ULC/ORD C441-M90 Standards. For the United States, we
recommend that you use a listed pellet vent that meets the UL-641, 7
edition Standard. This unit can be vented in an existing chimney with the
addition of a liner if the chimney is more than 4” in diameter. Class “A”
chimney is not required. Refer to the instructions provided by the vent or
chimney manufacturer, especially when passing through a wall, ceiling or
roof.

th

AIR

INTAKE

EXHAUST

Figure 4

Rear view

TRIM

COLLAR

Your venting system should have at least one foot of vertical rise for
each foot of horizontal run. The total vertical rise should ne ver be
less than 3 feet (see Appendix A).

This is a pressurized exhaust system. All vent connector joints must be
sealed with 500°F (260°C) RTV silicone sealant to ensure consistent
performance and avoid smoke spillage. All horizontal connector joints must
be sealed with UL-181-AP foil tape. We recommend that all vertical vent
connector joints be secured with a minimum of 3 screws.

DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING
ANOTHER APPLIANCE.

DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING
SYSTEM OF THIS UNIT.

INSTALL VENT AT CLEARANCES SPECIFIED BY THE VENT
MANUFACTURER.

WARNING: DO NOT INSTALL IN SLEEPING ROOM

CAUTION: THE STRUCTURAL INTEGRITY OF THE MANUFACTURED
HOME FLOOR, WALL, AND CEILING/ROOF MUST BE MAINTAINED

Figure 5

Fresh air supply

VENTILATED

CRAWL SPACE

Figure 6

Ventilated crawl space

RODENT

GUARD

7

W

EQUIVALENT VENT LENGHT (EVL)

The longer the run of pipe in your installation, the greater the restriction in
the system. Therefore, larger diameter pipe should be used.

• Use 4” pipe if you have more than 15 feet of Equivalent Vent Length
(EVL).

• Horizontal runs shall not exceed 10 feet of EVL.

• To calculate EVL, use the following conversions table:

Qty Type of pipe EVL equivalent(ft)

1 90° elbow or “T” 5

1 45° elbow 3

1 ft Horizontal pipe run 1

1 ft Vertical pipe run 0.5

NOTE: At altitudes above 3,000 feet, we suggest the use of 4” diameter
vent at an EVL of 7 feet or more.

Here is an example on how to calculate the EVL of your installation. (See
Figure 8)

(3 x 4’ of vertical length = 12’ x 0.5 = 6 EVL) + (1 x elbow or "T" = 5 EVL) +
(2 x 1’ of horizontal length = 2 EVL)

Total EVL = (6 + 5 +2) = 13. So 3” diameter vent is acceptable.

INSTALLATION CONFIGURATIONS

HORIZONTALLY THROUGH WALL

(refer to Figure 7 & 8)

NOTE: Follow Vent chimney manufacturer’s instructions.

1. Position stove, adhering to clearances shown in Figures 1 & 2.

2. Locate position of hole in wall; directly behind stove exhaust vent
(refer to figure 4).

3. Always maintain 3” clearance from combustible materials.

4. Install Vent wall thimble per Vent manufacturer’s instructions.

5. Attach enough piping to penetrate and extend at least 6” beyond
exterior walls. An 8-foot vertical pipe run is suggested where possible
to reduce the possibility of smoke spillage in the event of a loss of
negative pressure.

6. Attach cap and seal outside wall thimbles with non-hardening
waterproof mastic.

Termination should not be located so that hot exhaust gases can ignite
trees, shrubs, or grasses or be a hazard to children. Exhaust gases can
reach temperatures of 500ºF and cause serious burns if touched.

90 DEGREE ELBOW

FOLLOW CHIMNEY OR
VENT MANUFACTURER'S
INSTRUCTIONS

WALL

THIMBLE

45 DEGREE ELBO

TERMINATION
COLLAR

WALL
STRAP

CLEAN OUT
TEE

Figure 7

Venting through wall

VERTICAL ROOF VENT

VERTICAL LENGTH 4' EVL = 4 X 0.5' = 2'

FOLLOW CHIMNEY OR
VENT MANUFACTURER'S
INSTRUCTIONS

1' HORIZONTAL RUN EVL = 1'

WALL

THIMBLE

1' HORIZONTAL RUN EVL = 1'

VERTICAL LENGTH 4' EVL = 4 X 0.5' = 2'

WALL
STRAP

VERTICAL LENGTH4' EVL = 4 X 0.5' = 2'

CLEAN OUT
TEE

90° ELBOW "T" LEE = 5'

Figure 8

Venting trough wall

Locate terminations: a) not less than 3 feet above any forced air inlet
located within 10 feet; b) not less than 4 feet below or horizontally from,
or one foot above, any door, window or gravity air inlet into any building;
c) not less than two feet from an adjacent building and not less than 7 feet
above grade when located adjacent to a public walkway. Mobile home
installations must use a spark arrester. Other restrictions may apply, such
as the need to maintain a minimum distance to a gas meter. US and
Canadian Standards may vary. Consult the vent manufacturer’s
instructions.

8

VERTICALLY WITH NEW CHIMNEY SYSTEM

(Refer to Figure 9 & 10 for basement installation)

NOTE: Follow Vent chimney manufacturer’s instructions.
OPTION: To achieve a center vertical installation, a 45º elbow and a

clean-out tee can be used to offset the pipe from the exhaust outlet to the
rear center of the stove.

OPTION: Install Vent elbow in place of clean-out tee. Locate stove. Drop
plumb bob to center of tee outlet, mark point on ceiling. Install ceiling
support and Vent pipe per Vent manufacturer’s instructions.

1. Always maintain 3” clearance from combustible materials. When
passing through additional floors or ceilings, always install firestop
spacer.

2. After lining up for hole in roof, cut either around or square hole in roof,
always 3” larger all the way around pipe. Install upper edge and sides
of flashing under roofing materials, nail to the roof along upper edge.
Do not nail lower edge. Seal nail heads with non-hardening waterproof
mastic.

3. Apply non-hardening, waterproof mastic where the storm collar will
meet the vent. Slide storm collar down until it sits on the flashing.
Seal and install cap. Mobile home installations must use a spark
arrester.

VERTICALLY INTO EXISTING CHIMNEY SYSTEM

As an alternative, 3” or 4” Vent can be run inside existing chimney to
termination(Figure 11). This is the preferred method.

Follow guidelines for equivalent vent length.

Figure 9

Venting through roof

FOLLOW CHIMNEY OR
VENT MANUFACTURER'S
INSTRUCTIONS

WALL

THIMBLE

FOR BASEMENT INSTALLATION

A 4" PIPE IS RECOMMANDED

WALL
STRAP

CLEAN OUT
TEE

CLEAN OUT
TEE

Venting through existing chimney

Figure 11

Figure 10

Basement installation

9

VERTICALLY INTO EXISTING MASONRY FIREPLACE

NOTE: Follow Vent chimney manufacturer’s instructions.

1. Have the masonry chimney inspected by a qualified chimney sweep
or installer to determine its structural condition.

2. You will need a pipe length equal to the chimney height from the
hearth plus 18 inches.

3. Install a blanking plate and the chimney pipe, and if used the outside
air pipe, as shown in Figure 12.

4. Attach the DuraVent adapter, a section of pipe and clean out tee,
making sure the clean out tee is centered in the chimney flue area.
Use RTV, metallic tape, and a minimum of three self-taping screws at
all joint connections to ensure a tight seal.

5. Position the stove, adhering to the clearances in Figures 1 & 2.

6. Measure and build chimney top plate. Cut out holes for chimney pipe,
and if used the outside air pipe. Install and seal with non-hardening
mastic to prevent water leakage. Install vent cap.

INSTALLATION THROUGH SIDE OF MASONRY CHIMNEY

NOTE: Follow Vent chimney manufacturer’s instructions.

1. Position the stove, adhering to the clearances in Figures 1 & 2. Mark
the center of the hole where the pipe is to pierce the masonry
chimney.

2. It will be necessary to break out the masonry around the location of
the pipe center mark. Use a 4-inch diameter hole for 3-inch pipe and
5-inch diameter hole for 4-inch pipe.

3. Measure and build chimney top plate. Cut out holes for chimney pipe,
and if used the outside air pipe.

4. Install the tee on the bottom of the vertical pipe system and lower it
down the chimney until the center branch of the tee is level with the
center of the hole in the masonry, as shown in Figure 13.

5. Install and seal the top plate from step 3 with non-hardening mastic.
Slip the storm collar over the pipe, and while holding the pipe at the
proper elevation, affix the collar with a minimum of three ¼” stainless
steel sheet metal screws. Seal all joints and seams around the collar.

6. Connect the horizontal pipe by pushing it through the hole in the
masonry and lining it up with the branch in the tee. Push the pipe into
the tee while twisting it to lock it into the tee.

7. If desired, once the horizontal pipe is in place, the space between the
pipe and masonry may be filled with high-temperature grout.

Install the trim collar. An adjustable pipe length and adapter may be
needed to finish the connection to the stove.

FOLLOW CHIMNEY OR
VENT MANUFACTURER'S
INSTRUCTIONS

Venting through masonry

FOLLOW CHIMNEY OR
VENT MANUFACTURER'S
INSTRUCTIONS

WALL

THIMBLE

Venting through side of

3"

Figure 12

chimney

3"

OPTIONAL

OUTSIDE AIR

Figure 13

masonry chimney

VERTICAL ROOF VENT

18"

TOP PLATE

BLANKING PLATE

OPTIONAL
OUTSIDE AIR

CLEAN OUT
TEE

VERTICAL ROOF VENT

18"

TOP PLATE

CLEAN OUT
TEE

10

OPERATION

PROPER FUEL

THIS STOVE IS APPROVED FOR BURNING PELLETIZED WOOD FUEL ONLY! Factory-approve d pellets are those ¼” or 5/16” in diameter and not
over 1” long. Longer or thicker pellets sometimes bridge the auger flights, which prevents proper pellet feed. Burning w ood in forms other than pellets
is not permitted. It will violate the building codes for which the sto ve has been approved and will void all warranties. The design incorporates

automatic feed of the pellet fuel into the fire at a carefully prescribed rate. Any additional fuel introduced by hand will not increase heat output but may
seriously impair the stoves performance by generating considerable smoke. Do not burn wet pellets. The stove’s performance depends heavily on th e
quality of your pellet fuel.
Avoid pellet brands that display these characteristics:

a. Excess Fines – “Fines” is a term describing crushed pellets or loose material that looks like sawdust or sand. Pellets can be screened before being

placed in hopper to remove most fines.

b. Binders – Some pellets are produced with materials to hold them together, or “bind” them.
c. High ash content – Poor quality pellets will often create smoke and dirty glass. They will create a need for more frequent maintenance. You will

have to empty the burn pot plus vacuum the entire system more often. Poor quality pellets could damage the auger. DROLET cannot accept
responsibility for damage due to poor quality pellets. The pellet ash content should be less than 1%. The pellet grade and ash content should be
indicated on the bag by the pellet manufacturer.

DISPLAY BOARD

PRE-START-UP CHECK

Remove burn pot, making sure it is clean and none of the air holes are plugged. Clean the firebox, and then reinstall burn pot. Clean door glass if
necessary (a dry cloth or paper towel is usually sufficient). Never use abrasive cleaners on the glass or door. Check fuel in the hopper, and refill if
necessary.

BUILDING A FIRE

Never use a grate or other means of supporting the fuel. Use only the DROLET approved burn pot.
NOTE: During the first few fires, your stove will emit an odor and a small amount of fumes as the high temperature paint cures or becomes seasoned to

the metal. Maintaining smaller fires will minimize this. Avoid placing items on stovetop during this period because paint could be affected. Make sure the
room is well-ventilated. Open windows. Odors and fumes released during this process are unpleasant but they are not toxic.

LIGHTING PROCEDURE

a. Fill hopper and clean burn pot.

b. Press on-off button

selected. After 2 minutes, when the display turns itself off, the thermostat button will be displayed at 50% of its brightness.

c. If the flame is too low in the burn or the stove have difficulty to light. Adjust the air supply toward the minimum setting for start-up. In some

situations, it may be necessary to have the damper completely closed for ignition to take place. After there is a flame, the damper can then be
adjusted for the desired feed setting.

d. Adjust feed rate to desired setting by pressing the desired level on the gradient 1 to 6.
If the fire doesn’t start within 30 minutes, refer to troubleshooting section.

To select the thermostat mode, press . It will blink every 5 seconds to indicate the mode as been

11

UNIT CONTROLS

The blowers and automatic fuel supply are controlled from the panel on the ECO-35. The control panel functions are as follows:
Note:

1- To display the available functions, just touch the control board at any place
2- Select the desired function
*The display will turn itself off after 2 minutes.

MODE BUTTON

• When the on-off button is pressed, the stove will automatically ignite. The heat level must be selected manually to adjust the stove’s heat output to
the desired level. If the thermostat mode is selected, the stove will automatically modulate between the lowest heat level and the heat level
selected to keep the room temperature at the thermostat’s setting. If the set room temperatu re is achieved while the stove has been running at t he
lowest heat level for more than 45 minutes, the unit will automatically shut off and will start another ignition cycle only when the thermostat calls for
heat again(stove have to cool down completely prier to ignite). No fire starter is necessary to ignite the unit. The auger will feed fuel f or 4 minutes
and the electronic igniters will stay on for 10 minutes. If the unit doesn’t ignite within 15 minutes, the stove will wait for 5 minutes and will start a

second ignition cycle. If ignition fails a second time, a warning message

• The Heat Level may be selected during the ignition cycle and can be modified in heating mode. However, the unit will only feed fuel at the desired
heat level setting when the heat sensor located into the stove will receive a signal indicating that the unit has been fully ignited. This may take
anywhere between 10 and 15 minutes.

FUEL FEED SWITCH

• By activating this function, the stove start to feed for 1 minute and the display start to blink. You can stop the distribution by touching the sign a
second time or by starting the stove.

CAUTION: THIS FUNCTION CAN ONLY BE OPERATED WHEN THE STOVE IS IN “OFF” POSITION. THE FUEL FEED SWITCH IS USED TO
PRIME THE AUGER WHEN THE AUGER IS EMPTY.

NOISE REDUCER

• The convection blowers speed varies directly with the fuel feed rate. A dimmed display indicates that the blowers are in low noise mode.

• When the “NOISE REDUCER” button is pushed, the convection blowers will switch to their lowest speed. The convection blowers will remain at

their lowest speed unless the stove reaches a certain temperature. If this occurs, the convection blowers will go back to their highest setting to cool
down the stove. The low noise button will have to be pressed again for the convection blowers to go back to their lowest speed. Please note th at
the difference in noise level may not be noticeable on units manufactured after 2006. Those units already use two ultra-quiet tubeaxial convection
blowers that produce a very low noise even at full speed.

will appear on control panel.

HEAT LEVEL

• By pressing the gradient, you can set the pellet feed rate and hence the heat output of your stove. The levels of heat output will change and each
gradient will indicate the level from 1 to 6.

RESET

The reset button has to be used to clear any warning on the control and restart your stove. This button is only available when you get a warning
code on the display.

OPENING DOOR

The door should be open only for maintenance purposes.

CONVECTION BLOWERS (ROOM AIR FAN)

Upon starting your stove, the convection blowers will not come on until the stove’s heat exchanger warms up. This usually takes about 10 to 15 minutes
from start-up. Speed will vary with the selected feed rate, except if the noise reducer mode has been activated.

12

COMBEXtm
Your stove uses a unique patented technology called COMBEX. As opposed to most other pellet stoves, which use only an

exhaust blower, your ECO-35 uses a motor on which are mounted two housings with impeller blades. One housing serves for
combustion, and the other for exhaust. This is why we refer to the combustion/exhaust blower throughout this manual. The
COMBEX system balances combustion air and uptake to provide clean, w o rry-free combustion which is less dependent on the
leak-tightness of the device and the quality of the combustible.

IF THE STOVE RUNS OUT OF PELLETS

The fire goes out and the auger motor and blowers will run until the stove cools down. This will take a few minutes.

After the stove’s components stop running, a warning message will appear

.

To restart, press

, refill the hopper , and press until pellets begin to fall into the burn pot. Press to start the unit.

DAMPER CONTROL

The damper control on the stove’s in the right hand side panel. This control is necessary due to the varied burn characteristics of individual installations
and different pellet brands. It allows you to improve the efficiency of your stove. Providing correct combustion air will reduce the frequency of cleaning
your glass door and prevent the rapid build-up of creosote inside your stove and chimney.

You should adjust the damper based on the fire’s appearance. A low, reddish, dirt y fire can be improved by increasing the air supply using the damp er
control. A “blow torch” fire can be improved by reducing the air supply Figure 14.

Through trial and error, you will find the best setting. Consult your dealer if you need help.

REFUELING

We recommend that you not let the hopper drop below 1/4 full. If the reload lid stays for open more than 3 minutes, a warning will appear. To

restart, press

KEEP HOPPER LID CLOSED AT ALL TIMES EXCEPT WHEN REFILLING. THE HOPPER MAY BE FILLED WHILE THE STOVE IS OPERATING.
DO NOT OVERFILL HOPPER. DO NOT TOUCH THE UNIT WITH THE PELLET BAG. HOT SURFACE MAY MELT THE BAG.

button, and then press .

SHUTDOWN PROCEDURE

Turning your stove off is a matter of pressing
fallen to a preset level. The stove cannot restart until it has shut down completely.

on the control panel. The blowers will continue to operate until internal firebox temperatures have

SAFETY FEATURES

a. Your stove is equipped with a re-settable high temperature switch (also called heat sensor or heat switch). The switch has a reset button on its

backside. Like a circuit breaker, once tripped, the reset button will have to be pushed before you can restart the stove. The high temp erature
switch is there to protect the stove from overheating in case of an evacuation problem, a control board problem, a blower problem, or any other
problem causing the unit to overheat. The manufacturer recommends that you call your dealer if this occurs as it may indicate a more serious
problem. A service call may be required.

NOTE: If an overheating situation occurs, the high temperature switch (called the L-250 manual reset) will automatically shut down the auger
(fuel feed system) and a warning code

b. If the combustion blower fails, an air pressure switch will automatically shut down the auger and a warning message

safety feature is to prevent the unit from burning fuel when the combustion/exhaust blower has failed, therefore preventing combustion fumes
from spilling into the room.

will appear.

will appear. This

13

c. If the temperature in the auger rises be yond a cert ain acceptable level, two high tem perature s witches located under and above auger housing

will stop the fuel feed system and a warning

CODE BEFORE RESETING TO RESET

H1, H2, H3
OR H4

*** After 3 attempts, reset is no longer possible, call SBI technical support.

DAMPER OPERATION

Heat exchanger and/or exhaust system
is/are clogged. Refer to the owner’s manual
for maintenance procedures.

will appear.

Press simultaneously for 2 seconds

.

and

N

E

P

O

STOVE

C

L

O

E

S

Figure 14

Damper operation

14

OPERATING THE STOVE USING A THERMOSTAT

A thermostat may help you maintain a constant house temperature
automatically. A millivolt thermostat or 24 Volt thermostat is required. A
fixed wall mount or hand held model can be used. The control panel can be
set up two ways to operate your stove in thermostatic mode.

THERMOSTAT INSTALLATION

• Unplug the stove from the power outlet.

• Connect two thermostat wires to the terminal block located on the

lower right side of the back of the stove. To do so, loosen the two
screws and insert the wires in the terminals. Tighten the two screws.
(See Figure 15)

• If you are using a wireless wall thermostat or a hand held thermostatic
remote control, you can locate the receiver behind the stove’s back
panel, on the right end side, just below the terminal block. Most
receivers are already equipped with quick-connect terminals. Simply
unplug the PC board wires connected to the back of the terminal block
and connect them directly with the receiver’s terminals. Location of
the thermostat is very important to obtain the best comfort and
efficiency from you ECO-35. The thermostat should be mounted 50
inch from the floor on a wall located 15 to 20 feet from the stove. You
should avoid an installation directly in front of the stove to avoid
cycling.(See Figure 16)

MODES

THERMOSTATIC MODE

THERMOSTAT
WIRE TERMINAL

Figure 15

Thermostat terminal

• To use this mode, the thermostat button
upon starting the stove. The heat setting is then selected using the
“Heat Level” selector. When set in thermostatic mode, the stove will
automatically run at the heat level selected until the set room
temperature is reached. When that occurs, the stove will switch to
heat setting #1 (lowest) until the thermostat calls for heat again. The
convection blowers will also slow to its lowest speed. When the
thermostat calls for heat again, the stove will increase its feed rate to
match the heat setting selected.

• N.B.: If the room temperature remains stable and the thermostat
does not call for heat during at least 45 minutes, the stove will shut
down. When the thermostat calls for heat again, the stove will start an
ignition cycle. Once the ignition cycle is completed, the stove will
increase its feed rate to match the heat setting selected.

NOTE: When in thermostatic mode:

• You should not operate the manual control or play with the
temperature setting.

• YOUR THERMOSTAT SHOULD BE INSTALLED BY AN
AUTHORIZED DEALER OR SERVICE PERSON.

must be pushed

SHOULD BE AVOIDED

D = MINIMUM DISTANCE 15 FEET

Figure 16

Thermostat location

15

OPERATING SAFETY PRECAUTIONS

PLEASE READ THIS!

a. If you notice a smoldering fire (burnpot full but no visible flame) AND a heavy smoke buildup in firebox,

immediately TURN OFF the stove, but DO NOT unplug it. Do not open the door, change the damper setting or
tamper with any controls on the stove. Wait until smoke inside the firebox clears and blowers shut down. Do as

instructed in “PRE-START-UP CHECK” and “LIGHTHING PROCEDURE“, then attempt to restart the fire. If the
problem persists, contact your dealer. Please note that smoke build-up during ignition may occur. Smoke can
accumulate in the firebox for a few seconds just before the igniter is hot enough to fire-up the pellets in the burn pot.
This is normal. As soon there is fire in the burn pot, smoke will disappear.

b. DO NOT STORE OR USE FLAMMABLE LIQUIDS, ESPECIALLY GASOLINE, IN THE VICINITY OF YOUR

DROLET STOVE. NEVER USE A GAS OR PROPANE TORCH, GASOLINE, GASOLINE-TYPE LANTERN FUEL,
KEROSENE, CHARCOAL LIGHTER FLUID OR SIMILAR FLUIDS TO START OR “FRESHEN UP” A FIRE IN
THIS HEATER.

c. WARNING: DO NOT OVERFIRE THIS STOVE. This may cause serious damage to your stove and void your

warranty. It also may create a fire hazard in your home. IF ANY EXTERNAL PART OF THE UNIT BEGINS TO

GLOW, YOU ARE OVERFIRING. Immediately press the
YOUR STOVE. If you leave your house and your stove is not connected to a thermostat or a fresh air supply, do not
leave it at the maximum setting. If the ambient air in a confined room becomes to hot, the stove may overheat
and the thermal protection on the combustion/exhaust motor may be activated, causing the motor to stop.

d. KEEP ALL HOUSEHOLD COMBUSTIBLES, SUCH AS FURNITURE, DRAPES, TOYS, ETC. AT LEAST THREE

FEET FROM THE STOVE.

e. Maintain proper ventilation. It is important that adequate oxygen be supplied to the fire for the combustion process.

Modern houses are often so well insulated that it may become necessary to open a window slightly or install an
outside air vent to provide sufficient combustion air.

f. Since heating with solid fuel is potentially hazardous, even with a well made and thoroughly tested stove, it would be

wise to install strategically placed smoke detectors and have a fire extinguisher in a convenient location, near an exit.

g. Do not open the stove door when operating unless necessary. This will create a dirty, inefficient burn and could allow

smoke spillage or sparks to escape.
h. Stove must not be operated by young children or someone unfamiliar with stove’s operation.
i. Do not service or clean this appliance without disconnecting the power cord.
j. Do not abuse the door glass by striking, slamming or similar trauma. Do not operate the stove with the glass removed,

cracked or broken.
k. High ambient temperature in summer time may cause the heat sensors on the stove to activate the blowers,

disconnect the stove when not used for extended periods.

switch on the control panel. DO NOT UNPLUG

16

MAINTENANCE

FAILURE TO CLEAN AND MAINTAIN THIS UNIT AS INDICATED CAN
RESULT IN POOR PERFORMANCE AND SAFETY HAZARDS. NEVER
CLEAN WHEN HOT.
NOTE: Inspect burn pot periodically to see th at holes ha ve not become
plugged. If so, clean thoroughly.

ASH REMOVAL

The ECO-35 has an ash bin located below the firebox To remove ashes:

a. Make sure fire is out and the firebox is cool.
b. Open the door and remove the baffle from the firebox. Slide each side

of the baffle toward the center to remove(Figure 20). Close the door.

c. With the door closed, clean heat exchanger tubes by activating the

cleaning rod back and forth.(Figure 18)

d. Open the door and remove the burn pot by grasping it and pulling

straight out. Scrape the burn pot with a scraper if necessary. Make sure
that the burn pot holes are not plugged. Empty ashes from the burn pot
into the ash drawer through the opening at the bottom of the firebox.
Put the burn pot back in place. Make sure it is level and pushed all the
way in. Make sure the burn pot gasket is in place be fore putting

the burn pot back. Absence of this can cause ignition problem.

e. Sweep the ashes in the firebox into the ash drawer through the opening

at the bottom of the firebox or vacuum to remove ashes.
WARNING: Make sure ashes are cool to the touch

before using a vacuum. See “VACUUM USE”.

f. Periodically remove and empty the ash drawer (see Figure 19)in the

pedestal below the ash lip. Dispose of ashes properly.

g. Put the ash drawer back into place, making sure the ash plug is into

place and maintain a good seal. A air leak will affect the combustion.

BAFFLE

MAIN

WALL

Baffle & exhaust access panel

CLEANING

ROD

Figure 17

ASH DISPOSAL

Ashes should be placed in a metal container with a tight-fitting lid. The
closed container or ashes should be placed on a non-combustible surface or
on the ground, well away from all combustible materials pending final
disposal. If ashes are disposed of by soil burial or otherwise locally
dispersed, they should be retained in the closed container until all cinders
have thoroughly cooled.

Cleaning rod

Figure 18

Figure 19

Ash drawer

17

VACCUM USE

If a vacuum is used to clean your stove, we suggest using a vacuum designed for
ashes.

Some regular vacuums and shop vacs leak ash into the room. Your vacuum or shop
vac may have a special filter or bag available to eliminate this leakage.

CLEANING

a. Heat Exchange Tubes – Your ECO-35 stove is designed with a built-in

heat exchanger tube cleaner. This should be used weekly to remove
accumulated ash on the tubes. Slide the cleaning rod back and forth two
or three times from front to back (refer to figure 18). When finished, push
the cleaning rod back in.

b. Baffle: Remove the baffle and scrape off ashes. Slide both sides toward

the center to remove the baffle(Figure 20) Use a vacuum is necessary. In
some cases, you will need to remove creosote on the baffle, which can
accumulate rapidly under certain conditions. A small wire brush can be
used. It is important to remove this creosote because it is highly
combustible and could cause premature corrosion.

*When replacing the baffle, make sure that the ope n side of the baf fle
is located on the left.

c. Chamber walls: Periodically, you must vacuum the ashes that may have

accumulated on the main walls of the combustion chamber. START BY
REMOVING THE DECORATIVE MASONRY-LIKE PANELS, WHICH ARE
SIMPLY HELD BY CLIPS. The use of a vacuum is necessary. There is
also a cleaning outlet located behind the left side panel of the combustion
chamber. Remove this panel using a screw driver. Loosen the adjustment
screws then remove the securing screws(Figure 21). Slide the wall toward
right(Figure 22), tilt it (Figure 23) then remove it from the combustion
chamber. Scrape off ashes. You will notice a small rectangular cleaning
outlet. Inspect behind this outlet (see Figure 24) Insert the vacuum tip
through the cleaning outlet and clean thoroughly. REPEAT THIS
OPERATION AT LEAST ONCE PER TON OF PELLETS BURNED UNTIL
YOU ARE FAMILIAR WITH HOW ASHES ACCUMULATE WITH YOUR
OPERATING PRACTICES.

d. Convection blowers - Clean the blower’s protective wire mesh regularly

as dust and hair build-ups on the mesh will reduce the efficiency of the
blowers and may cause the stove to overheat.

Figure 20

Baffle removal

SECURING

SCREWS

ADJUTMENT

SCREWS

Figure 21

Figure 23

Figure 22

Figure 24

18

BLOWERS AND PRESSURE SWITCH PROBE

DANGER: RISK OF ELECTRIC SHOCK. DISCONNECT POWER BEFORE
SERVICING UNIT.

• Blower Cleaning – Over a period of time, ashes or dust may collect on the
blades of both the combustion/exhaust blower and convection blower.
Periodically, the blowers should be cleaned as the ash and dust can
impede performance. The combustion/exhaust blower can be accessed by
opening the left, right, and back panels.(Figure 25) To clean the blades in
the combustion housing, insert the vacuum tip through the air inlet damper
opening located on the side of the combustion housing. Clean thoroughly.
To clean the blades in the exhaust housing, use a screw driver to remove
the cleaning access panel located on the side of the metal box covering the
housing. Insert the vacuum tip through the cleaning outlet and clean the
blades thoroughly.

• Pressure switch probe cleaning - Ashes may accumulate on inside tip of
the pressure switch probe connector. Use a mesh pad or wire brush to
clean the connector and blow inside the tube to make sure it’s free of
obstruction.

NOTE: When cleaning, be careful not to bend fan blades. Some stove owners lightly spray an
anti-creosote chemical on the fire to help reduce creosote formation within the stove.

PROBE CONNECTOR

Figure 25

Exhaust blower cleaning

CHIMNEY CLEANING

a. Creosote Formation – When any wood is burned slowly, it produces tar and other organic vapours, which combine with expelled moisture to form

creosote. The creosote vapours condense in the relatively cool chimney flue or a newly started fire or from a slow-burning fire. As a result, creosote
residue accumulates on the flue lining. When ignited, this creosote makes an extremely hot fire, which may damage the chimney or even destroy
the house. Despite their high efficiency, pellet stoves can accumulate creosote under certain conditions.

b. Fly Ash – This accumulates in the horizontal portion of an exhaust run. Though non-combustible, it may impede the normal exhaust flow. It should

therefore be periodically removed.

c. Inspection and Removal – The chimney connector and chimney should be inspected annually or per ton to determine if a creosote or fly ash build-

up has occurred. If creosote has accumulated, it should be removed to reduce the risk of a chimney fire. Inspect the system at the stove connection
and at the chimney top. Cooler surfaces tend to build creosote deposits quicker, so it is important to check the chimney from the top as well as from
the bottom.

The creosote should be removed with a brush specifically designed for the type of chimney in use. A qualified chimney sweep can perform this service. It
is also recommended that before each heating season the entire system be professionally inspected, cleaned and, if necessary, repaired.

To clean the chimney, disconnect the vent from the stove.

RECOMMENDED MAINTENANCE SCHEDULE

Use this as a guide under average-use conditions.

Components Daily

Burn Pot Empty Empty / Brush
Glass Wipe Clean

Heat Exchanger Tubes

Baffle Empty and brush
Convection Blower

Filters
Ashe Drawer Empty
Combustion Chamber Vacuum Vacuum / Brush
Left-hand Channel Vacuum
Exhaust Blower Vacuum
Pressure Switch Tap Brush
Venting System Inspect Sweep
Gaskets Inspect
Hopper Empty / Vacuum

Activate cleaning

rod every time you

load the stove

Vacuum

Weekly
or after

+/- 10 bags

Activate cleaning rod

and vacuum

Twice a year

or after

+/- 25 bags

Annually

or

per ton of pellets

Gasket around door and door glass should be inspected and repaired or replaced when necessary (see
“REPLACEMENT PARTS”).

19

REMOVAL AND REPLACEMENT OF BROKEN DOOR GLASS

While wearing leather gloves (or any other gloves suitable for handling broken glass), carefully remove any loose pieces of glass from the door frame.
Dispose of all broken glass properly. Return the damaged glass to your DROLET Dealer for replacement. It is critical that you replace the glass with a
genuine one supplied by your dealer.

TROUBLESHOOTING

When your stove acts up, your first reaction may be to call for help. This guide may save you time and money by enabling you to resolve simple
problems yourself. Problems can be caused by: 1) poor fuel; 2) poor operation or maintenance; 3) poor installation; 4) component failure; 5) factory
defect. You can usually solve problems related to 1 and 2. Your dealer can solve problems related to 3, 4 and 5. Refer to ELECTRICAL DIAGRAM and
REPLACEMENT PARTS section to help identify and locate stove parts.

Should you need to contact your dealer or the manufacturer, please photocopy and fill out the form in Appendix
B. Try to answer as many questions as you can. Have it handy when you call. This will help you obtain a much
faster service.

STOVE SHUTS OFF AND SHOWS WARNING CODE
“P”

Possible Causes: Possible Remedies: (Unplug stove first when possible)

1. Airflow pressure switch hose or hose connector tip are blocked.

2. The air inlet, burn pot, interior combustion air chambers, combustion
blower, or exhaust pipe are blocked with ash or foreign material.

3. Vent pipe is incorrectly installed.

4. The pressure switch connections are faulty.

5. The pressure switch wires are pulled loose from the connectors on
the wiring harness.

6. Combustion/exhaust blower failure.

7. Control board is not sending power to the combustion/exhaust blower.

8. Control board not sending power to pressure switch.

9. Airflow pressure switch has failed (very rare).

Pull out air hose from the airflow switch and blow through it. If air flows
freely, the hose and tube are fine. If air will not flow throw the hose, use a
thin wire to clear the blockage. If the problem occurs again shortly after ,
you may have to remove accumulation on the pressure switch probe
located inside of exhaust blower housing(refer to maintenance section)

Follow all cleaning procedures in the maintenance section of the owner’s
manual.

Check to make sure vent pipe installation meets the criteria in the owner’s manual
as well as the pipe manufacturer’s recommendations.

Check the connectors attached to the pressure switch.

Check to see whether the wires are loose at the connectors.

This blower must turn on when you start the unit. If it does not, make sure there is
power on the connections. If the power is connected, the motor is probably
defective; if there is no power, see #7.

If there is no power going to the combustion blower, check all connections. If all
wires are properly connected, you have a defective control board.

There should be 120-volt going through the pressure switch when the
stove is on. You will need a technician to perform this test.

To test the airflow pressure switch, you need to disconnect the air hose from the
blower casing. With the other end still attached to the switch, very gently suck on
the loose end of the hose (you may want to completely disconnect the hose from
the stove and the switch first and make sure it is clear). If you hear a click, the
switch is working. BE CAREFUL: TOO MUCH SUCTION CAN DAMAGE
THE SWITCH.

20

STOVE SHUTS OFF AND DISPLAYS WARNING CODE “E”
Possible Causes: Possible Remedies: (Unplug stove first when possible)

1. The hopper is empty.

2. The burn pot holes are blocked.

3. The air damper is open too much for the low feed setting.

4. The air inlet, interior chambers, or exhaust system is partly blocked.

5. The auger motor has failed.

6. The auger shaft is jammed.

7. The thermistor heat sensor has malfunctioned.

Refill the hopper.

Remove the burn pot and clean it thoroughly.

If the stove is on the low setting, you may need to close the damper all the way.
Slide the air supply control toward the minimum setting.

Follow all cleaning procedures in the maintenance section of the owner’s
manual.

Remove the auger motor from the auger shaft and try to run the motor separately by
pressing the fuel feed button on the control board. If the motor turns, the shaft is
jammed on something. If the motor does not turn, the motor is defective or there is a
faulty connection with the control board. To remove the auger motor, take the rear
panel off the stove body. Loosen the two screws holding the motor to the auger
shaft.

Remove the auger shaft from the auger housing. Start by emptying the hopper. Take
the rear panel off the stove body. Then take the auger motor off by removing the
screws that hold the motor to the auger shaft. Once the motor is out, remove the four
screws on the steel plate that holds the auger shaft to the auger housing. Then rotate
the bottom end of the auger shaft down towards you until you can pull the shaft
down out of the stove. After you have removed the shaft, inspect it for bent flights,
burrs, or broken welds. Remove any foreign material that may have caused the jam.
Also, check the auger housing for signs of damage such as burrs, rough spots, or
grooves cut into the metal that could have caused a jam. Clean the auger housing
thoroughly to remove all pellet dust.

The thermistor is a heat sensor located on the exhaust housing. Its function
is to tell the control board that the unit has ignited properly by measuring the
heat in the exhaust. The pellet stove will not start feeding pellets at the
desired heat setting until it has received a signal from the thermistor heat
sensor. If the thermistor heat sensor is bad, the unit will stop after the
ignition cycle. If this situation occurs, call your dealer or technician.

21

STOVE FEEDS PELLETS, BUT WILL NOT IGNITE AND
SHOWS WARNING CODE “L”

Possible Causes: Possible Remedies:

1. Air damper open too far for ignition.

2. Blockage in igniter tube or inlet for igniter tube.

3. Defective igniter element.

4. The thermistor heat sensor has malfunctioned.

5. The control board is not sending power to the igniter.

6. The burn pot gaskets are missing or have to be replaced

Adjust the air supply to the minimum setting for startup. In some situations, it may
be necessary to have the damper completely closed for ignition to take place. Once
there is a flame, the damper can be adjusted to the desired feed setting.

Remove the burn pot and clean it thoroughly. Make sure that all openings are clear.
Find the place where the igniter tube comes out of the burn pot housing. It is a small
tube located on the back of the burn pot housing. Make sure it is clear. Make sure
there is no debris around the igniter element or inside the igniter tube.

Supply power directly to the igniter element. Watch the tip of the igniter from the
front of the stove. After about 2 minutes, the tip should glow. If it does not, the
element is defective and must be replaced. You may need a technician to perform
this test.

The thermistor is a heat sensor attached to the exhaust housing. Its function is to
tell the control board that the unit has ignited properly by measuring the temperature
in the exhaust. The stove will not feed pellets at the desired heat setting until it
has received a signal from the thermistor heat sensor. If the thermistor heat sensor
is bad, the unit will go out and stop after the ignition cycle. If this situation occurs,
call your dealer or technician.

Check the voltage going to the igniter during ignition. It should be a full current. If
the voltage is lower than full current, check the wiring. If the wiring is functional and
properly connected, the board is defective. You will need a technician to perform
this test.

Burn pot gaskets are located in the metal ring at the bottom of the burn pot. These
gaskets prevent heat lost from the igniters to get a fastest ignition.

STOVE FEEDS PELLETS, BUT WILL NOT IGNITE
AND SHOWS WARNING CODE “I”

Possible Causes: Possible Remedies:

1. The igniter fuse on the control board has blown.

Remove the control board and check at the back to see if the F3 fuse is good,; if
not replace it with a 5 Amp 250V fuse. Plug the stove back and try to run the
unit.

STOVE STOPS FEEDING PELLETS AND SHOWS
WARNING CODE “O”

Possible Causes: Possible Remedies:

1. The L-250 manual reset high temperature switch has tripped.

Using the owner’s manual, locate the L-250 high temperature switch.
There is a red button on it. Press the red button. If you hear a click, the
high limit had tripped. Reset the stove. The stove should now function
normally. YOU NEED TO INSPECT YOUR UNIT AT THIS POINT. The F­250 high temperature switch will trip if the unit overheats. There might be
a problem with another component or the installation, causing the stove to
overheat. Make sure that the convection blowers work. If one of the
convection blowers has failed, this can cause the unit to overheat. Clean
any dust off of the windings and blades of the convection blower. Call
your dealer or a technician if you get this code again.

22

STOVE STOPS FEEDING PELLETS AND SHOWS
WARNING CODE “H”

Possible Causes: Possible Remedies:

1. One of the two L-250 automatic high temperature switch has
tripped.

T

he L-250 automatic high temperature switches are located on
the top and bottom of the auger housing They send a signal to the
control board if the auger housing overheats. Wait until the
stove cools down AND THEN INSPECT YOUR UNIT.
Improper installation, poor maintenance, or a defective or
missing component may be causing the stove to overheat. Reset
the stove and restart it. Call a technician if you get this code
again.

*See procedure below to restart the stove.

CODE BEFORE RESETING TO RESET

H1, H2, H3
OR H4

Heat exchanger and/or exhaust system
is/are clogged. Refer to the owner’s manual

Press simultaneously for 2 seconds the reset

for maintenance procedures.

icons .

*** After 3 attempts, reset is no longer possible. Call SBI technical support.

and

STOVE STOPS FEEDING PELLETS AND SHOWS
WARNING CODE “d”

Possible Causes: Possible Remedies:

1. The hopper lid has stayed open for more than 3 minutes

As a security measure, the auger will stop turning and feeding pellets as
soon as the hopper lid opens. It will resume normal operation as soon as
the hopper lid is closed. However, if the hopper lid stays open for more
than 3 minutes, the unit will stop and a code “d” will appear on the control
board. Close the hopper lid. Reset the unit and start it again.

SMOKE SMELL COMING BACK INTO THE HOME

Possible Causes: Possible Remedies:

1. There is a leak in the vent pipe system.

2. The gasket on the combustion/exhaust blower housing has
gone bad.

Inspect all vent pipe connections. Make sure they are sealed with RTV
silicone that has a temperature rating on 500
with UL-181-AP foil tape.

Inspect the gasket on the combustion/exhaust blower housing to make
sure it is in good shape and replace if necessary.

AUGER MOTOR STOPS FEEDING PELLETS AND COMES BACK ON

Possible Causes: Possible Remedies:

1. The auger motor is overheating
and tripping the internal
temperature shutoff (thermal
protector).

Start by emptying the hopper. Follow procedure described in warning code “E” section #6.

o

F or higher. Also, seal joints

23

THE STOVE IS RUNNING BUT DISPLAYS WARNING CODE
Possibles Causes: Possibles Remedies:
Warning generated by a power failure while the stove was running.

The stove will restart on the initial setting once it cools off.
Note: For a short power failure (less than 5 seconds), the stove will continue to function at
the selected speed.

The control board does not display any information.

Possible Causes: Possible Remedies :

1. A fuse on the control board has blown.

Remove the control board. Check if the F2 fuse on the back of it appears
to be bad. Replace it with a 7.5 Amp 250 Volt fuse. Plug the stove back in
and try to run the unit.

GLASS SOOTS UP VERY FAST
FLAME IS LAZY, DARK, AND HAS BLACK TIPS
AFTER STOVE HAS BEEN ON FOR A WHILE, THE BURNPOT OVERFILLS

Possible Causes: Possible Remedies:

1. Stove or vent pipe is clogged, which restricts airflow through the burn pot.

2. Vent pipe installed improperly.

3. The air damper is too far closed for a higher setting.

4. Burn pot holes are blocked.

5. Blockage in air intake pipe.

6. Combustion/exhaust blower is not spinning fast enough.

7. Bad pellets
(Applies to “GLASS SOOTS UP AT A VERY FAST RATE” Only)

Follow all cleaning procedure in the maintenance section of the owner’s
manual.

Check to make sure the vent pipe has been installed according to the
instructions in the owne r’s manual.

Slide the air supply to a higher setting and try to burn the unit again.

Remove the burn pot and clean it thoroughly.

Visually inspect the air intake pipe that leads into the burn pot for foreign
material.

Test the RPM on the blower (separately – bypassing the control board) after the
blades have been cleaned. The RPM should be approximately 3000 RPM. You
will need a technician to perform this test.

The brand or the batch of pellets used may be of poor quality. If possible, try a
different brand of pellets. You might also want to try a brand that is made from
a different type of wood (softwood vs. hardwood). Different woods have
different characteristics that affect the combustion. Your pellets may also be too
humid. Make sure you store your fuel properly, in a dry ventilated area.

24

WARNING CODES

MESSAGE CORRESPONDING WARNING

Pressure switch error.

L-250 automatic high temperature switches, located under and above the auger.

L-250 manual reset high temperature switch, located beside convection blower.

Hopper is empty

Lighting error.

Hopper lid stayed open more than 3 minutes.

Inverted polarity in power outlet.(Will not keep the stove from operating)

Power outage

Igniter fuse is burnt out

SMOKE SMELL OR SOOT BUILD-UP

Because it is a wood-burning device, your ECO-35 may emit a faint wood-burning odor. If this increases beyond normal, or if you notice an unusual soot
build-up on walls or furniture, check your exhaust system carefully for leaks. All joints should be properly sealed. Also clean your stove, following
instructions in “MAINTENANCE”. If problem persists, contact your dealer.

25

ELECTRICAL DIAGRAM

THERMISTOR

AIR FLOW
PRESSURE

SWITCH

N.O.

L-250

RESET

N.C.

L-250

N.C.

THERMOSTAT

TERMINALS

N.O.

L2(LINE COMMON)
L1(LINE H OT)
L1(LINE NO CONNECTED)
FRAM E GROUND

HOPPER LID

SWITCH

N.O.

L-250

N.C.

CONTROL

BOARD

DISPLAY BOARD

COMBUSTION/EXHAUST

BLOWER

AUGER

MOTOR

IGNITER

F-160

N.O.

CONVECTION

BLOWER

Figure 26

Electrical diagram

CONVECTION

BLOWER

PRESSURE

SWITCH

THERMISTOR

CLEANING
ACCESS
PANEL

CONVECTION

BLOWER

FRESH AIR

INTAKE

POWER

CORD

THERMOSTAT

TERMINAL

AUGER
MOTOR

CONVECTION

BLOWER

EXHAUST

EXHAUST/COMBUSTION
BLOWER

Figure 27

Components left side

ELECTRIC SHOCK

In order to verify the grounding and polarity of the power outlet, the control board sends a low voltage impulse to the stove’s frame.
If the polarity is wrong or if the outlet is not properly grounded, you may feel an electric shock when you touch the stove; this low voltage impulse is
harmless and connecting your stove to a grounded outlet with the right polarity will keep this from happening and protect your electronics against
damages from power surge.

Figure 28

Components rear

HIGH TEMPERATURE

SWITCH L-250

AUTOMATIC

HIGH TEMPERATURE

SWITCH L-250

MANUAL RESET

Components right side

Figure 29

HIGH TEMPERATURE

SWITCH F-160

AIR SUPPLY
CONTROL

IGNITER

26

REPLACEMENT PARTS

Contact an Authorized DROLET Dealer to obtain any of these parts. Never use substitute materials.
Use of non-approved parts can result in poor performance and safety hazards.

ITEM PART #

Airflow Pressure Switch 44029
Air Switch Hose 49004
Auger Motor 44038
Burn Pot SE49045
Burn pot gasket(2 requires) 21045
Control Board(Touch screen) 44022
PC Board 44102
Combustion/Exhaust Blower Assembly SE44101
Convection Blower 44100
Door Gasket AC06100
Hot Rod Igniter 44030
Thermistor 44095
F-160 Convection blower heat sensor 44058
L-250 Automatic High Temp. Switch 44059
L-250 Manual Reset High Temp. Switch 44041
Window Gasket (7’) AC06400
Convection blower gasket 21177
Combustion/Exhaust blower gasket 21109
Auger 24017
Loading lid switch 44098
Loading lid handle 30527
Baffle

27

)

Possible Vertical
vent length (feet)

APPENDIX A

HORIZONTAL AND VERTICAL VENT CHART

If you plot your venting
system configuration on
this chart, your wall or
roof termination should be
within the grid.

Possible Horizontal
vent length (feet

Let’s imagine an installation consisting of a horizontal vent coming out at the back of the stove on a total distance of 8 feet.
This horizontal run is followed by a Tee and a 6-foot vertical rise. This type installation is not acceptable. As you can see,
the vent termination is clearly outside the allowed configuration zone on the chart. The venting system does not have at
least one foot of vertical rise for each foot of horizontal run.

Instead, if the installation consisted of a horizontal vent coming out at the back of the stove on a total distance of 4 feet,
followed by a Tee and a 6-foot vertical rise, it would be acceptable. The installation would end be within the allowable
configuration zone on the chart since it would have at least one foot of vertical rise for each foot of horizontal run.
Furthermore, the total vertical rise would be at least 3-foot high.

28

APPENDIX B

INSPECTION AND REPAIR FORM

Fabriquant de poêle international inc.

Stove Builder International Inc.

1700, rue Léon-Harmel, Québec (Québec) G1N 4R9

Phone : [phone] Fax : [phone]

E-mail : [e-mail] Web site : www.drolet.ca

CUSTOMER

Name
Address
City
Province / State
Country
Home telephone
Work telephone
Purchase date
Model number
Serial number
Installation da te
Installator name
Installator telephone
Type of pellets
Thermostat
Outside air Yes  No 
Ignition gasket / 2 magniglass

Yes

Yes





No

No





CLEANING

PART

Exchanger
Baffle
Left interior channel
Hopper
Evacuation blower
Blower blades
Pressure system
Burn pot
Convection blower filter
Evacuation system
Gaskets

DAILY

YES NO

YES NO

+/- 10 bags +/- 25 bags

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO

YES NO YES NO

YES NO

+/- 50 bags

Use 4” pipe if you have more than 15
feet of Equivalent Vent Length (EVL).

YES NO

the more restriction there is in

Therefore, larger diameter pipe

INSTALLATION DIAGRAM

DRAW YOUR INSTALLATION

1 SQUARE = 1 F00T

Installatio n

Equivalent vent lenght calculation table

int.



ext.

Equivalent vent lenght (EVL)

Qty Type of pipe

1

1
1 feet
1 feet

T or 90°

45° elbow

Horiz. Lenght

EVL

5 feet
3 feet
1 feet

0.5 feetVert. Lenght

The longer the run of pipe in

your installation,

the system.

should be used.



DESCRIPTION OF THE PROBLEMINDICATE APPLIANCE CODE

29

DROLET LIMITED LIFETIME WARRANTY

The warranty of the manufacturer extends only to the original consumer purchaser and is not transferable. This warranty covers br and
new products only, which have not been altered, modified nor repaired since shipment from factory. Proof of purchase (dated bill of
sale), model name and serial number must be supplied when making any warranty claim to your DROLET dealer.

This warranty applies to normal residential use only. Damages caused by misuse, abuse, improper installation, lack of
maintenance, negligence or accident during transportation are not covered by this warranty.

This warranty does not cover any scratch, corrosio n, wa rping, or discoloration caused by over firi n g, abr asi ves or chemical cleaners.
Any defect or damage caused by the use of unauthorized parts or others than original parts void this warranty. An authorized qualified
technician must perform the installation in accordance with the instructions supplied with this product and all local and national
building codes. Any service call related to an improper installation is not covered by this warranty.

The manufacturer may require that defective products be returned or that digital pictures be provided to support the claim. Returned
products are to be shipped prepaid to the manufacturer for investigation. If a product is found to be defective, the manufacturer will
repair or replace such defect and reasonable transportation fees will be refunded. Repair work covered by the warranty, executed at the
purchaser’s domicile by an authorized qualified technician requires the prior approval of the manufacturer. Labour cost and repair
work to the account of the manufacturer are based on predetermined rate schedule and must not exceed the wholesale price of the
replacement part. All labour and freight costs covered by this warranty are limited according to the table below.

The manufacturer at its discretion may decide to repair or replace any part or unit after inspection and investigation of the defect. The
manufacturer may, at its discretion, fully discharge all obligations with respect to this warranty by refunding the wholesale price of
any warranted but defective parts The manufacturer shall in no event be responsible for any special, indirect, consequential damages
of any nature, which are in excess of the original purchase price of the product.

DESCRIPTION

Combustion chamber (welds only), heat exchanger, auger, and
castings.

Plating (defective manufacture) – subject to limitations above Lifetime n/a
Convection blower, combustion blower, auger motor, and PC board 2 years 1 year
Stainless steel baffle and parts 5 years 3 years
Carbon steel baffle and parts 2 years 1 year
Ceramic glass (thermal breakage only*) 2 years n/a
Heat sensors, switches, and igniter. 1 year 1 year
Paint (peeling), ceramic logs, gaskets, and masonry-like panels 1 year n/a

*Pictures required

Shall your unit or a components be defective, contact immediately your DROLET dealer. Prior to your call make sure you have the
following information necessary to your warranty claim treatment:

• Your name, address and telephone number;

• Bill of sale and dealer’s name;

Before shipping your unit or defective component to our plant, you must obtain from your DROLET dealer an Authorization
Number. Any merchandise shipped to our plant without authorization will be refused automatically and returned to sender.

• Serial number and model name as indicated on
the nameplate fixed to the back of your unit;

• Nature of the defect and any relevant information.

WARRANTY APPLICATION

PARTS LABOUR

Lifetime 5 years

30