Enviro EP3 User manual

PLEASE KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
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SHERWOOD INDUSTRIES IS AN ENVIRONMENTALLY RESPONSIBLE COMPANY. THIS MANUAL IS PRINTED ON RECYCLED PAPER.
6
50-1070
PELLET STOVE
EF3
OWNER’S MANUAL
PLEASE READ THIS ENTIRE MANUAL BEFORE INSTALLATION
AND USE OF THIS PELLET BURNING ROOM HEATER. FAILURE TO
FOLLOW THESE INSTRUCTIONS COULD RESULT IN PROPERTY
DAMAGE, BODILY INJURY, OR EVEN DEATH.
Contact your building or fire officials about restrictions and
installation inspection requirements in your area.
Freestanding, Fireplace Insert,
and Built-In Heater

Table of Contents
2
Introduction..............................................................................................................3
Rating Label Location......................................................................................3
Pellet Quality..................................................................................................3
Important Safety Data....................................................................................4
Safety Warnings And Recommendations...........................................................4
Operating Instructions...............................................................................................7
Operating Your Pellet Stove - Timer..................................................................7
Turning Your Pellet Stove Off - Timer................................................................7
Stove Controls - Circuit Board..........................................................................8
Operating Your Pellet Stove - Circuit Board.......................................................9
Turning Your Pellet Stove Off - Circuit Board.....................................................9
Routine Cleaning and Maintenance...........................................................................10
Warranty.................................................................................................................13
Installation Data Sheet.............................................................................................14

3
Introduction
* This manual is designed for the home owner in conjunction with the technical manual. *
RATING LABEL LOCATION:
Freestanding: The rating label is located on the inside of the hopper lid.
Fireplace Insert and Built-In Heater: The rating label is located on the hopper cover.
PELLET QUALITY:
Pellet quality is important, please read the following:
Your enviro pellet stove has been designed to burn wood pellets only. Do not use any other
type of fuel, as this will void any warranties stated in this manual.
The performance of your pellet stove is greatly affected by the type and quality of wood
pellets being burned. As the heat output of various quality wood pellets differs, so will the
performance and heat output of the pellet stove.
CAUTION: It is important to select and use only pellets that are dry and free of dirt or any impurities
such as high salt content. Dirty fuel will adversely affect the operation and performance of the unit and
will void the warranty.
ASH: The ash content of the fuel and operation of your stove will directly determine the frequency of
cleaning. The use of high ash fuels may result in the stove needing to be cleaned daily. A low ash fuel
may allow longer intervals between cleaning.
CLINKERING: [clinkers are silica (sand) or other impurities in the fuel that will form a hard mass during
the burning process]. This hard mass will block the air flow through the Burn Pot Liner and affect the
performance of the stove. Any fuel, even approved types, may tend to clinker. Check the Burn-Pot Liner
daily to ensure that the holes are not blocked with clinkers. If they become blocked, remove the liner
(when the unit is cold) and clean/scrape the clinkers out. Clean the holes with a small pointed object if
required. Refer to the section Routine Cleaning and Maintenance.
PELLET FEED RATES: Due to different fuel densities and sizes, pellet feed rates may vary. This may
require an adjustment to the slider damper setting or to the auger feed trim setting on Low.
Since Sherwood Industries Ltd. has no control over the quality of pellets that you use, we assume no
liability for your choice in wood pellets.
Store pellets at least 36” (1 m) away from the pellet stove.

4
IMPORTANT SAFETY DATA:
Please read this entire Owner’s Manual before installing or operating your ENVIRO Pellet
Stove. Failure to follow these instructions may result in property damage, bodily injury
or even death. Contact your local building or fire official to obtain a permit and any information on
installation restrictions and inspection requirements for your area.
To prevent the possibility of a fire, ensure that the appliance is properly installed by adhering to the
installation instructions. An ENVIRO dealer will be happy to assist you in obtaining information with
regards to your local building codes and installation restrictions.
The stove’s exhaust system works with negative combustion chamber pressure and a slightly positive
chimney pressure. It is very important to ensure that the exhaust system be sealed and airtight. The ash
pan and viewing door must be locked securely for proper and safe operation of the pellet stove.
Do not burn with insufficient combustion air. A periodic check is recommended to ensure proper
combustion air is admitted to the combustion chamber. Setting the proper combustion air is achieved by
adjusting the slider damper located on the left side of the stove.
Minor soot or creosote may accumulate when the stove is operated under incorrect conditions such as an
extremely rich burn (black tipped, lazy orange flames).
If you have any questions with regard to your stove or the above-mentioned information, please feel free
to contact your local dealer for further clarification and comments.
SAFETY WARNINGS AND RECOMMENDATIONS:
Caution: Do not connect to any air distribution duct or system.
Do not burn garbage or flammable fluids such as gasoline, naptha or engine oil.
Unit hot while in operation. Keep children, clothing and furniture away. Contact
may cause skin burns.
FUEL: This pellet stove is designed and approved to only burn wood pellet fuel with up to 3% ash
content. Dirty fuel will adversely affect the operation and performance of the unit and may void the
warranty. Check with your dealer for fuel recommendations.
THE USE OF CORDWOOD IS PROHIBITED BY LAW.
SOOT: Operation of the stove with insufficient combustion air will result in the formation of soot which
will collect on the glass, the heat exchanger, the exhaust vent system, and may stain the outside of the
house. This is a dangerous situation and is inefficient. Frequently check your stove and adjust the slider/
damper as needed to ensure proper combustion. See: “SLIDER/DAMPER SETTING”.
CLEANING: There will be some build up of fly ash and small amounts of creosote in the exhaust. This
will vary due to the ash content of the fuel used and the operation of the stove. It is advisable to inspect
and clean the exhaust vent semi-annually or every two tons of pellets.
Introduction

5
Introduction
ASHES: Disposed ashes should be placed in a metal container with a tight-fitting lid. The closed
container of ashes should be on a non-combustible floor on the ground, well away from all combustible
materials pending final disposal. The ashes should be retained in the closed container until all cinders
have thoroughly cooled before disposing of them.
ELECTRICAL: The use of a surge protected power bar is recommended. The unit must be
grounded. The grounded electrical cord should be connected to a standard 220-240 volts (2.26-2.46
Amps), 50 hertz electrical outlet and also must be accessible. If this power cord should become damaged,
a replacement power cord must be purchased from the manufacturer or a qualified ENVIRO dealer. Be
careful that the electrical cord is not trapped under the appliance and that it is clear of any hot surfaces
or sharp edges. This unit’s maximum power requirement is 520 watts.
GLASS: Do not abuse the glass by striking or slamming the door. Do not attempt to operate the stove
with broken glass. The stove uses ceramic glass. Replacement glass must be purchased from an ENVIRO
dealer. Do not attempt to open the door and clean the glass while the unit is in operation or if glass is
hot. To clean the glass, use a soft cotton cloth and mild window cleaner, gas or wood stove glass cleaner,
or take a damp paper towel and dip into the fly ash. This is a very mild abrasive and will not damage the
glass.
FLAMMABLE LIQUIDS: Never use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter
fluid, or similar liquids to start or “freshen up” a fire in the heater. Keep all such liquids well away from
the heater while it is in use.
SMOKE DETECTOR: Smoke detectors should be installed and maintained in the structure when
installing and operating a pellet burning appliance.
OPERATION: The ash pan and door must be closed securely for proper and safe operation of the pellet
stove. Also ensure all gaskets on the door are checked and replaced when necessary.
KEEP ASH PAN FREE OF RAW FUEL.
DO NOT PLACE UNBURNED OR NEW PELLET FUEL IN ASH PAN. A fire in the ash pan may occur.
If you have any questions with regards to your stove or the above-mentioned information, please feel
free to contact your local dealer for further clarification and comments.
SINCE SHERWOOD INDUSTRIES LTD. HAS NO CONTROL OVER THE INSTALLATION OF
YOUR STOVE, SHERWOOD INDUSTRIES LTD. GRANTS NO WARRANTY IMPLIED OR STATED
FOR THE INSTALLATION OR MAINTENANCE OF YOUR STOVE. THEREFORE, SHERWOOD
INDUSTRIES LTD. ASSUMES NO RESPONSIBILITY FOR ANY CONSEQUENTIAL DAMAGE(S).
SAVE THIS INSTRUCTION MANUAL FOR FUTURE REFERENCE

Operating Instructions
AUTOMATIC SAFETY FEATURES:
Your pellet Stove has the following safety features:
A. The stove will shut off when the fire goes out and the exhaust temperature drops below 120°F
(49°C).
B. The stove has a high temperature safety switch. If the temperature on the hopper reaches 200°F
(93°C), the auger will automatically stop and the stove will shut down when the exhaust temperature
cools. If this happens, call your local dealer to reset the 200°F (93°C) high limit switch. ALSO FIND
THE REASONS WHY THE UNIT OVERHEATED.
C. The unit has a convection fan control over-ride. This function causes the convection fan to reach its full
speed when the temperature at the back of the firebox reaches 160°F (71°C). This is a normal safety
feature of your unit. To compensate for the fan cycling action that may occur, turn up the blower
control proportionately to the heat output.
D. If the power goes out, the unit will stop running. When the power comes back on, the stove will not
restart unless the exhaust temperature is still above 120°F (49 °C).
SLIDER/DAMPER SETTING:
This is used to regulate the airflow through the pellet stove.
Circuit Board Model: A Qualified Service Technician or Installer should set the Slider Damper.
SPECIAL NOTES:
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 
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Figure 2: Slider /
damper positions.
Pellet quality is a major factor in how the Pellet stove will operate. If the pellets have
a high moisture content or ash content the fire will be less efficient and has a higher
possibility of the fire building up and creating clinkers (hard ash build-up).
If the fire should happen to go out and the Dial-A-Fire has been set on the lowest
setting, the Slider Damper should be pushed in slightly, decreasing the air in the
firebox or the Dial-A-Fire and Auger Trim can be turned up slightly.
If, after long periods of burning, the fire builds up and overflows the burn pot or
there is a build up of clinkers, this would be a sign that the pellet quality is poor,
this requires more primary air, the slider damper must be pulled out to compensate.
Pulling the slider damper out gives the fire more air.
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The easiest way to make sure that an efficient
flame is achieved is to understand the
characteristics of the fire.
• A tall, lazy flame with dark orange tips,
requires more air – Open slider (pull out)
slightly.
• A short, brisk flame, like a blowtorch, has too
much air – Close slider (push in) slightly.
• If the flame is in the middle of these two
characteristics with a bright yellow/orange,
active flame with no black tips then the air is
set for proper operation.
Figure 1: Efficient Flame.

Operating Instructions
Figure 3: Dial-A-Fire control panel.
1. Check and fill hopper with pellets.
2. Make sure unit is plugged into a working outlet.
3. Switch the power “ON” by pushing the start-up switch once
only.
4. Turn knob “B” to the 12 o’clock position. (Lower grade
pellets may need a higher setting on the feed rate).
NOTE: Unit will take longer to light if the hopper has been
completely emptied or is the first fire up.
5. Wait until the fire is established, then turn “Knob B” to the
desired heat output. The stove may not be able to burn in the
BLUE ZONE if poor quality wood pellets are being used. Adjust
the slider-damper to the appropriate setting (see “SLIDER/
DAMPER SETTING” section.
6. If the stove should shut off after fifteen (15) minutes and
there is still a fire in the firebox – press the start-up switch
once more. If the fire went out, return to step 2 and re-light
the stove.
KNOB “A”: Fan Controller. By adjusting the knob you will vary
the rate of airflow into the room by varying the speed of the convection blower. When you first start the
stove, it should be placed in the “OFF” position in order to heat the unit as quickly as possible. Once the
room has come up to temperature, the control may be set to a comfortable level. *Note: The convection
blower may cycle to high automatically depending on the setting of knobs “A” and “B”. This is a normal
safety feature of the unit.
SPECIAL NOTES: The flashing green light corresponds to the auger feed rate.
The scale on the Dial A Fire knob represents a range, not exact times. Wood pellets of differing quality
may affect the performance of the stove. If the stove has trouble operating at the ends of its’ range,
turn the heat output knob back slightly.
KNOB “B”: Dial a Fire Heat Output Knob. This knob controls the amount of heat output. The dial has a
scale with the blue zone representing the coolest setting of the stove, and the red zone representing
the hottest setting. The scale on knob “B” represents a range, not exact at times or fuel quantities.
Wood pellets of differing quality may affect the performance of the stove. If the stove has trouble
operating at either end of its range, turn the heat output knob back slightly.
TURNING YOUR PELLET STOVE OFF - TIMER:
To turn your stove off, simply turn the HEAT OUTPUT knob (“Knob B”) counter-clockwise until the knob
clicks to the “OFF” position. This will stop the feed of pellets. The blowers will continue to run and cool
the stove. When cool enough, the stove will shut down. DO NOT unplug unit while combustion
fan is operating. This may lead to smoke escaping from the stove.
7
Circuit Board Only: The combustion blower determines the adjustment of air from high fire to low fire.
The combustion exhaust blower is a variable speed blower controlled by the heat output. When the heat
output is turned down the blower speed will slow, decreasing the airflow through the firebox. As the heat
output knob is turned up, the blower speed increases drawing more air through the firebox.
OPERATING YOUR PELLET STOVE - TIMER:

Auger Trim Auger Trim Auger Trim
2 Seconds
"ON"
3 Seconds
"ON"
Factory Setting
4 Seconds
"ON"
8
AUGER TRIM
FAN
MANUAL FEED
ON/OFF
HEAT LEVEL
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3. AUGER PULSE LIGHT: This light will flash in
conjunction with the auger.
4. MANUAL AUGER FEED: If the unit runs out
of fuel, this button can be used to “prime the
auger system”. This button will turn off after 60
seconds and then must be released and pressed
again.
5. SYSTEM LIGHT: Responsible for signaling
the state of the control board. When the light
is flashing during start-up, the stove is in an
automatic start mode. When the light is solid,
the Heat Level Setting can be altered.
6. ON/OFF BUTTON: Used to turn the unit ON
and OFF.
7. HEAT OUTPUT INDICATOR: Shows the
present heat output setting.
8. HEAT LEVEL ADJUSTMENT: When pressed,
will change the heat setting of the unit from low
to high.
Operating Instructions
STOVE CONTROLS - CIRCUIT BOARD:
1. AUGER TRIM: Used to change feed rates on LOW ONLY for poorer quality fuels. Push the Auger
Trim button until the number 1 and 5 lights appear on the Heat Level Indicator. This will increase the
feed rate to 4 seconds ON time Auger pulse. This is done only on LOW to allow the burning of poor
quality fuels. Push the button until the number 1 and 4 lights appear, this will reduce the Auger On
time to 2 second. This setting is for high-grade fuel only. Push the button until just the number 1
light is on, this is for a three (3) second on time (standard setting).
2. CONVECTION BLOWER CONTROL: Used to turn the convection blower ON/OFF. If the Blower
is left off, and the sensor located on the air jacket reaches 160 °F (71 °C), the Convection blower
will automatically come on HI speed to cool the unit. Leave the convection blower ON for peak
efficiency
Figure 4: Circuit board control panel.
Figure 5: Auger trim and heat level indicator.

9
Operating Instructions
OPERATING YOUR PELLET STOVE - CIRCUIT BOARD:
PRE-BURN INSTRUCTIONS: The burn pot liner holes must be clear and the liner installed properly
against the ignitor tube for proper operation. Check the hopper for enough pellets to start the unit.
DO NOT OPERATE THE UNIT WITH THE DOOR OR ASH PAN AJAR
MANUAL MODE:
To START: Press the ON / OFF button. The stove will turn on. The system light will flash. The Auger
Light will flash with each pulse of the auger (the Auger Feed Rate is pre-programmed during start-up).
The Heat Level Indicator will show the Heat Level that the stove will run at after start-up.
If this is the first time the unit has been started or the unit has run out of fuel, the auger will need to
be primed. Press the Manual Auger Feed button until fuel starts to drop into the Burn Pot Liner (see
“OPERATING INSTRUCTIONS; STOVE CONTROLS - CIRCUIT BOARD”).
To OPERATE: When a fire has been established, the System Light will turn solid, the Auger Light will
continue to flash to the corresponding Heat Level setting. The Heat Level button can now be pressed to
change the desired Heat Level Output setting.
The convection blower (room air blower) will turn on. The speed of this blower is controlled by the setting
of the heat level output indicator. The convection blower can be turned OFF by depressing the convection
blower control button. When the air jacket reaches 160 °F (71 °C) the convection blower will come ON
High, cooling the unit. For the best efficiency and to prevent cycling, the convection blower should be
left on at all times.
When operating on LOW HEAT LEVEL, the feed rate can be adjusted, using the auger trim, for different
quality fuels. These settings can be used if the fire keeps going out on low (poor quality fuel). Or if the
low setting is too hot for the room (see “OPERATING INSTRUCTIONS; STOVE CONTROLS - CIRCUIT BOARD”).
THERMOSTAT / SWITCH MODE:
INITIAL START-UP: See above
OPERATION - HI / LOW mode: When the thermostat contacts are closed the stove settings are
adjustable as per Manual Mode (see above). When the thermostat contacts open, the circuit board will
take control of the settings. The stove will drop down to a low burn until the thermostat contacts close
again. This low burn setting can be adjusted for different fuel qualities (see “OPERATING INSTRUCTIONS;
STOVE CONTROLS - CIRCUIT BOARD”). The stove will come back to the previous HEAT LEVEL setting when the
thermostat contacts close again.
OPERATION – ON / OFF mode: When the thermostat contacts close, the unit will light automatically.
Once up to temperature, the stove operates the same as in manual mode (see above). When the
thermostat contacts open, the unit automatically begins its shutdown routine. The stove will re-light
when the thermostat contacts close again.
TURNING YOUR PELLET STOVE OFF - CIRCUIT BOARD:
•MANUAL and HI / LOW mode: To turn the unit OFF, simply press the ON / OFF button. This will stop the
feed of pellets. The blowers will continue to operate and cool the stove down. When cool enough, the
stove will turn off.
•ON / OFF mode: To turn the unit OFF, turn the thermostat down or off.
DO NOT unplug unit while Combustion fan is operating.
This may lead to smoke escaping from the stove.

10
Routine Cleaning and Maintenance
NOTE: Do not use abrasive cleaners to clean the surface or any part of the stove.
The following should be inspected periodically to ensure that the appliance is operating at its optimum
and giving you excellent heat value:
2-3 Days / Weekly Bi-Annually or 2 Tons of Fuel
Burn Pot and Liner Exhaust Vent
Ash Pan Fresh air Intake Tube
Inside Firebox Blower Mechanisms
Door Glass Heat exchanger tubes
Heat exchanger tubes Behind firebox liners
Ash pan & Door gaskets All Hinges
Door Latch Post Season Clean-up
BURN POT AND LINER (2-3 days)
This is the ‘pot’ where the pellets are burned. The burn pot and liner should be inspected every two to
three days, to ensure proper air flow through the liner. Failure to keep the liner clean may cause
a build up of fuel past the burn pot liner and up the drop tube. This will cause the auger to
jam and may result in pellets burning in the drop tube and hopper.
Ensure the unit is cold before cleaning. To remove the burn pot and burn pot liner, open the door using
the door handle provided, located on the left-hand side of the stove. Swing the door open. Lift the
liner from the burn pot. Lift the burn pot from the firebox by gently lifting the front of the burn pot up
first, then sliding the assembly from the air intake tube and the ignitor cartridge. Using a metal scraper,
remove material that has accumulated or is clogging the liner’s holes. Then dispose of the scrapped ashes
from the liner and from inside the burn pot. Place the burn pot back into the stove, making sure that the
pipes are properly inserted into the burn pot and the front tabs are placed in the firebox. Place the liner
back into the burn-pot making sure that the ignitor hole in the liner is aligned with the ignitor tube. Push
the liner up against the ignitor tube.
● If, after long periods of burning, the fire continually
builds up and overflows the burn pot or there is a build up
of clinkers, this is an indication that the pellet fuel quality
is poor or the stove may need cleaning. Check the stove
for ash build up (clean if required) and adjust the slider /
damper to produce the proper clean combustion.
INSIDE FIREBOX (2-3 days)
For bi-weekly clean out, ash may be removed from behind the steel plates by rotating the circular cover
to allow vacuuming behind the plates.
ASH PAN AND DOOR GASKETS (weekly)
After extended use the gasket may come loose. To repair or replace this, glue the gasket on, using high-
temperature fiberglass gasket glue available from your local ENVIRO dealer. This is important to maintain
an airtight assembly.
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TOOLS REQUIRED TO CLEAN UNIT
• Torx T-20 Screwdriver
• 5/16” Wrench or Socket,
• Brush,
• Soft Cloth
• Vacuum with fine filter bag
The following list of components should be
inspected and maintained routinely to ensure
that the appliance is operating at its optimum
and giving you excellent heat value:
Figure 6: Burn pot with liner.