Enviro EF THERMO EF THERMO 28 Technical Manual Download Page 4

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Safety Warnings & Recommendations

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 surface, well away from all combustible materials pending final disposal. If the 

ashes are disposed of by burial in soil or otherwise locally dispensed, they 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 (3.3  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 800 
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.
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.
INSTALLATION:  Contact your local building or fire official to obtain a permit and any information on installation 

restrictions and inspection requirements for your area. 
It is recommended that the unit be secured into its position in order to avoid any displacement.
Be sure to maintain the structural integrity of your home when passing a vent through walls, ceilings, or roofs. 

It is recommended that the unit be secured into its position in order to avoid any displacement. This appliance 

must be installed on a floor with an adequate load bearing capacity. If an existing construction doesn’t meet these 

prerequisite suitable measures (e.g. load distributing plate) must be taken to achieve it.
DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING SYSTEM OF THIS UNIT.

DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
FRESH AIR: Outside Fresh Air intake is strongly recommended. Failure to install intake air may result in the unit 

smoking during power failures as well as improper combustion. Fresh Air must be connected to all units installed in 

“Air Tight Homes” or where required by local codes. 
Consider all large air moving devices when installing your unit and provide room air accordingly. NOTE: Extractor 

fans when operating in the same room or space as the appliance, may cause problems. Limited air for combustion 

may result in poor performance, smoking and other side effects of poor combustion. 
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  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

Summary of Contents for EF THERMO EF THERMO 28

Page 1: ... THIS MANUAL IS PRINTED ON RECYCLED PAPER 50 878 2008 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 ...

Page 2: ...bles 11 Alcove Clearances 11 Vent Termination Requirements 12 Water Line Schematic 13 Horizontal Through Wall Installation 14 Through Wall Installation 15 Inside Vertical Installation 16 Outside Vertical Installation 17 Thermostat Installed 18 Mobile Home Installation 18 Fresh Air Connections 18 Troubleshooting 19 Fuses 21 Control Board Functions 21 Wiring Diagram 22 Parts List 23 Parts Diagram Co...

Page 3: ... operate the stove again until you are certain the chimney and its lining have not been damaged IN THE EVENT OF A MALFUNCTION Turn the water heater feed OFF Push the ON OFF button located on the control panel Have the water heater inspected and serviced by a qualified service technician OPERATION The door and ash drawer must be kept closed when the unit is in operation to prevent fume spillage and...

Page 4: ...it be secured into its position in order to avoid any displacement This appliance must be installed on a floor with an adequate load bearing capacity If an existing construction doesn t meet these prerequisite suitable measures e g load distributing plate must be taken to achieve it DO NOT INSTALL A FLUE DAMPER IN THE EXHAUST VENTING SYSTEM OF THIS UNIT DO NOT CONNECT THIS UNIT TO A CHIMNEY FLUE S...

Page 5: ...e heating output to be determined by Lab Testing KW Water heating output to be determined by Lab Testing KW Nominal heating output 25 kW Heat output range 2 5 kW 25 kW Combustion period at QN 12 hours Setting range for the temperature controller 30 C 75 C Fuel type size water content Wood pellets 6 mm dia maximum 8 W C Hopper capacity 77 75 liters 55 Kg Hopper filing opening 440 mm x 320 mm Auxili...

Page 6: ...1 mm DEPTH 31 3 16 793 mm 6 152 4 mm in front of unit 37 3 8 94 9cm 25 7 16 64 6cm 25 1 4 64 1cm 7 11 16 19 5cm 3 1 4 8 2cm 7 1 8 18 1cm 9 5 8 24 4cm 13 13 16 35 1cm 5 1 5 12 9cm 21 1 16 53 5cm 18 3 8 46 7cm 9 3 4 24 7cm 10 3 8 26 4cm Over flow valve Hot water outlet Exhaust Fresh air intake Fill pipe Inlet pipe Figure 1 Figure 2 ...

Page 7: ...efer to Figure 5 and 6 for the following safety devices See next page to remove cabinet sides 7 Pressure relief valve Low pressure switch Water temperature limit switch Water thermostat WARNING DO NOT TAMPER REMOVE OR BYPASS THE FOLLOWING SAFETY DEVICES DOING SO COULD RESULT IN PROPERTY DAMAGE BODILY INJURY OR EVEN DEATH Low Pressure Switch Located behind right cabinet side Water Temperature Limit...

Page 8: ...of the appliance see Figure 7 2 Remove the ash drawer cover see Figure 8 3 Remove the four 4 screws two on each side under the ash drawer holding the cabinet sides on see Figure 9 4 Slide cabinet side forward and out 5 Replace cabinet sides by using the reverse of the method used to remove them 6 Replace the ash pan cover Figure 9 Figure 8 Figure 7 ...

Page 9: ...electrical outlet Removing Your New Stove From the Pallet To remove your new stove from its pallet you must remove both cabinet sides This is done by the following steps refer to Figures 7 8 and 9 in the section Specifications Safety Devices 1 Loosen the three 3 screws from both sides on the back of the appliance 2 Remove the ash pan cover 3 Remove the four 4 screws two 2 on each side next to the ...

Page 10: ... tank from the box located in the hopper 2 Loosen the four 4 screws pointed out in Figure 12 Lift the back grill up and remove it from the unit 3 Apply thread sealant to the fitting point out in Figure 13 then tighten the expansion tank onto the fitting Figure 12 Figure 13 Installation More Air Less Air Figure 10 Figure 11 ...

Page 11: ...nt at clearances specified by the vent manufacturer 30 75cm 48 120cm 36 90cm Figure 15 Figure 14 11 This unit can be installed on a combustible floor due to the built in pedestal hearth pad for example linoleum hardwood flooring If combustible flooring is underneath the unit 6 inches 153 mm on either side and to the front must be protected by non combustible material If this unit is to be installe...

Page 12: ...cessed into walls or siding Installation Vent Termination Requirements IT IS RECOMMENDED THAT YOUR PELLET STOVE BE INSTALLED BY AN AUTHORIZED DEALER INSTALLER Table 2 Use in conjunction with Figure 16 for allowable exterior vent termination locations Letter Minimum Clearance Description A 61cm 24 in Above grass top of plants wood or any other combustible materials B 122 cm 48 in Beside below any d...

Page 13: ... Thermo 28 Pump Expansion Tank Check Valve Pressure Regulator Valve Radiator Radiator Hot Water Tank Heater Pressure Relief Valve Figure 17 The heating system for this unit must be engineered to accommodate the output of the unit All pipes must be installed by a licensed plumber ...

Page 14: ...back leaving a minimum of 1 2 5 cm clearance from the back of the stove to the wall Seal the vent pipe to the thimble with high temperature silicone 12 The pipe must extend at least 12 30 5 cm away from the building If necessary bring another length of pipe PL type to the outside of the home to connect to the first section Do not forget to place high temperature silicone around the pipe that passe...

Page 15: ...6 150mm Floor Protection Wall thimble manufactured by pellet vent manufacturer Fresh Air Intake 6 15 2cm 1 2 5cm Wall Thimble 12 30 5cm Non combustible Floor Protection Fresh Air Intake Rodent Mesh Cap 45 Elbow Existing Floor combustible Figure 18 Figure 19 ...

Page 16: ...vent is installed vertically it will be 3 76 mm away from a combustible wall 4 Locate the center of the fresh air intake pipe on the unit Match that center with the same point on the wall and cut a hole about 1 5 8 41 mm in diameter 5 Install the fresh air intake pipe 6 Install the tee with clean out 7 Install the pellet vent upward from there When you reach the ceiling make sure that the vent goe...

Page 17: ...outside of the house 11 Install PL vent upward from the tee Make sure that you install support brackets to keep the vent straight and secure 12 Secure the flashing as you go through the roof 13 Ensure that the rain cap is approximately 36 914 mm above the roof 6 15cm 2 5cm Flashing Rain Cap 36 91cm Non combustible floor protection Existing floor combustible Type L Vent Fresh air intake Tee with cl...

Page 18: ... as well as in Air Tight homes When connecting to an outside fresh air source do not use plastic combustible pipe Only 2 5 cm ID steel aluminum or copper pipe should be used It is recommended when you are installing a fresh air system to keep the number of bends in the pipe to a minimum Figure 23 This control board can be placed into two different modes When the jumper J9 is not jumped then the co...

Page 19: ...tove will not operate when hot Check the hopper for fuel Incorrect air damper setting Excessive air may consume the fire too quickly before the next drop of fuel leaving completely unburned fuel in the burn pot liner Insufficient air will cause build up further restricting the air flow through the Burn Pot Liner This in turn will cause the fuel to burn cold and very slowly Fuel may build up and sm...

Page 20: ...trol of the unit When the unit s system light becomes solid then control of the unit is given back to the operator If there is no control of the Heat Level button make sure the thermostat is calling for heat Call your local dealer for service 8 The stove will not shut off If the unit will not shut off ensure that the thermostat if equipped is turned down below the room temperature thermostat mode ...

Page 21: ...osest fuse to the outside edge of the circuit board controls If fuse F2 has blown then there was a electrical overload problem with one of the following parts ignitor auger motor high limit switch or exhaust blower Control Board Functions 1 3 4 5 6 2 9 8 7 1 WATER TEMPERATURE DIAL Read in degrees Celsius 2 AUGER TRIM 3 CONVECTION BLOWER CONTROL 4 AUGER PULSE LIGHT This light flashes in conjunction...

Page 22: ...RANGE ORANGE BLACK BROWN BLACK BLACK IGNITOR PURPLE BLACK HOT COMMON POWER CORD LIGHT BLUE GROUND VACUUM SWITCH COMBUSTION BLOWER 120 F 49 C EXHAUST TEMPERATURE SENSOR SENSOR CONVECTION BLOWER AUGER MOTOR 200 F 93 C HIGH LIMIT WATER TEMPERATURE SENSOR LOWER PRESSURE SENSOR WHITE BLACK RED RED RED 120 F 49 C WATER THERMOSTAT CONNECT OPTIONAL WALL THERMOSTAT HERE Pump PURPLE WHITE 22 ...

Page 23: ... Thermostat 50 1028 14 Water High Limit Manual Reset 50 1029 15 Expansion Tank 50 1030 16 Shut Off Air Bleeder 50 1031 17 Pressure Relief Valve 50 1032 18 Hopper Lid 50 1042 19 Top 50 1043 20 Cab Side Right 50 1044 21 Cab Side Left 50 1045 22 Louver Set Of 4 50 1046 23 Door Trim 50 1049 24 Ash Pan Cover 50 1050 25 Ash Pan 50 1051 26 Door Complete 50 1052 27 Door Handle 50 1053 28 Door Hinge Bracke...

Page 24: ...Parts Diagram Components 11 9 14 15 13 12 10 5 1 3 2 37 8 1 EF Thermo 28 Components April 2008 17 32 33 7 38 24 ...

Page 25: ...25 Parts Diagram Body 21 19 20 22 34 24 31 29 26 28 27 30 23 25 4 6 EF Thermo 28 Steel Components April 2008 16 18 35 36 ...

Page 26: ...____ MODEL ___________________________________ SERIAL NUMBER ___________________________ DATE OF PURCHASE _____________ dd mm yyyy DATE OF INSTALLATION ___________ dd mm yyyy MAGNEHELIC AT INSTALL ___________________ INSTALLER S SIGNATURE _________________________________________ NAME OF INSTALLER _________________________________________ ADDRESS _________________________________________ _________...

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