Service & Troubleshooting Guide For the Pellet & Corn Digital Control System Even Temp, Inc. P.O. Box 127 Waco, NE 68460 EMAIL: support@eventempinc.com WEB ADDRESS: www.stcroixheat.
Table of Contents Page Introduction to St. Croix Pellet Stoves..........................................................................9 Wood Pellets ..................................................................................................................10 Wood Pellet Manufacturing.......................................................................11 Why Pellets Burn .......................................................................................11 How pellets burn ...................
Ash Traps ............................................................................................ .......46 Heat Exchange Tubes ......................................................................... .......47 Heat Exchange Tube Scraper.............................................................. .......47 Heat Exchange Baffle ......................................................................... .......47 Hot Air Plenum ............................................................................
Pre-Burning at the Dealership......................................................................................67 Vacuum Check...................................................................................... 67-69 Direct Vent Installations and Battery Back-Ups.........................................69 Flame Pattern Interpretation and Characteristics........................................70 Data Table..................................................................................................
Trouble Shooting Flow Charts ............................................................................. .......98 Digital Control Board ......................................................................... ..... 98 Auger Motor - Electrical..................................................................... ..... 99 Auger Motor – Mechanical................................................................. ..... 99 Convection Fan .........................................................................
Fan/limit – Replacement....................................................................................... ...... ....6 Feed Rate Adjustment ........................................................................................... ..... ....6 SCF-050 Wiring Schematic................................................................................... ..... ....7 SCF-050 Parts Layout .......................................................................................... ...... ....
Rotation Motor Switch #2 – Electrical................................................................ ...... ..15 Gearmotors – Relay .............................................................................................. ..... ..15 Small Hopper Auger Motor ................................................................................. ...... ..16 Auger Motor – Mechanical .................................................................................. ...... ..
SCF-Revolution Parts Layout.............................................................................. …33-36 Ashby Insert Service Manual Addendum............................................................ ..... ....1 Ashby Control Board............................................................................................ ...... ....2 How to Swap out the Versa Grate and Multi-Fuel Burn Systems ................... ...... ....3 Removing the Versa Grate Burn System...................................
Introduction to St. Croix Pellet Stoves with the Versa Grate System. Models include: Afton Bay, Hastings, Prescott EXP, Prescott EXL and the York Insert. There are 2 pellet stove configurations that we offer; the Freestanding stove and Insert stove, all of which produce similar heat output BTU ratings. The unique method by which this fuel is burnt produces high efficiency ratings while maintaining an extremely low ash content level. St.
The stove operates using a top feed auger system; where the fuel is stored in a 40 to 90 pound hopper (depending on the model), then auger driven up through the auger tube and gravity dropped from the drop tube into the Burn Pot. The stove also operates using a Negative Pressure System, where exhaust gases are being expelled through the exhaust port at a faster rate than which fresh air can be delivered into the inlet port.
Why Pellets Burn Simply stated, wood is stored energy from the sun. This stored energy, when heated, breaks down into a gaseous state much like natural gas and carbon. When these gases and carbon are in the proper environment both of them will burn and produce heat. How Pellets Burn When wood is heated above approximately 500°F, part of it begins to break down into a gaseous state. These gases will burn when they are in the presence of oxygen and a temperature above approximately 1100°F.
The major product from burning wood is: 1) Heat. Since there is not 100% combustion of the wood pellet, there are two by-products, plus water, from burning pellets. These are: * Carbon monoxide and unburned gases (Exhaust gases) * Ash St. Croix stoves are designed to effectively handle the elimination of the by-products of combustion. St. Croix stoves are engineered to transfer a designed amount of the heat produced into the area around the stove.
St. Croix or any other pellet stove is not designed to run on just any pellet that is available. A minimum pellet quality is required. The residential pellet heating industry is just developing in some parts of the country. Pellets in these areas have been unavailable or may not meet the Pellet Fuel Institute (PFI) standards. Fortunately most pellets in most parts of the country are satisfactory.
Determining Acceptable Pellet Quality Some important questions in determining pellet quality are: 1) Have the pellets been tested against the PFI standard? 2) Does the pellet company use the same quality of raw material throughout the year? 3) How consistent is each sack and each load of pellets performing for the consumer? Assessing Visual Characteristics: 1) Volume per ton: Full pellets that vary in height probably vary in weight per cubic foot.
Assessing Performance Characteristics How pellets perform from the hopper to the ash tray is the true test of the quality of a pellet. The following are characteristics important in determining quality of a pellet. 1) Feed Rates: Pellets approximately ¼ inch in diameter, ½ inch long, free from fines, that have a slick coating and are dry and dense, feed faster and more evenly than pellets not having these characteristics.
Pre-Delivery Check – Pellet Stoves with the Versa Grate system One of the easiest ways to prevent problems in the field is to inspect the unit before leaving to install the stove. Offer the customer the option of Pre-Burning the stove for them, to burn off the odors associated with the first burn. The following checklist is to be used to quickly inspect the stove: WARNING: Use caution when inspecting electrical connections to prevent contact with live circuits. 1.
Level 1 On Time 1.50 seconds Default setting Figure 2 j. k. Level 1 On Time 1.75 seconds Auger Trim Level 1 On Time 1.25 seconds Auger Trim Fan Button Adjusts Combustion fan on level 1 only. Figure 3 Figure 4 Figure 5 The Auger ON Time for level 1 is adjustable to fine-tune the stove. Once the stove is turned on the #1 LED should be on. See Figure 2 above - This has an ON Time of 1.5 seconds Press the Feed Trim button (button #5, see Figure 1) once and the #1 and #5 light will come on.
m. n. Press the Heat Advance button (button #1, see Figure 1) and advance the setting to level #5. The control board slowly ramps up by advancing to the next level and waiting for 2 minutes at each level until it reaches level 5. This allows the stove to start up smoothly with out overloading the burn pot. After each 2-minute delay you will hear the blowers pick up in speed. Press the Auger button and the auger will feed pellets until the button is released.
NOTE: If the stove has been brought in from a cold environment (an unheated warehouse), the reading you get may be lower than normal. The High Temp Lubrication used in the Combustion fan does not allow the fan to spin as easily as a fan at room temperature. Figure 6 Factors that Decrease the Draft Readings once the unit is installed.
Venting Guidelines Type of Installation Size Recommendation * * 1) Less then 10' Horizontal 2) 10' to 12' Horizontal 3" 4" Acceptable Recommended * 3) Over 12' Horizontal 4" Required NOTE: Horizontal installation with runs greater than 12' is NOT RECOMMENDED.
Flame Pattern Interpretation The most effective method by which to determine the proper ratio of combustion air to pellet fuel is to observe the flame pattern. This should only be observed after the stove has been operating at the desired Heat Adjust Selection for a period of time. Even though a Negative Air Pressure Gauge measures quite accurately; visual observation of the flame pattern tends to be a highly effective diagnostic tool as well.
Data Table The Cycle Time. equals the ON time & OFF Time combined and is based on an 11.5 second Cycle time. Heat Level Selection Auger ON (Seconds) Combustion Fan Voltage +/- 3 Volts Convection Fan Voltage +/- 3 Volts Pellet Fuel (Lbs./Hour) +/- 10% Start-Up Cycle 2 minutes 100 Volts OFF NA 1 1.5 90 Volts 83 Volts 1.25 Lbs. 2 2.5 98 Volts 90 Volts 2.00 Lbs. 3 3.5 105 volts 98 Volts 3.15 Lbs 4 4.5 111 volts 103 Volts 3.7 Lbs. 5 5.5 120 volts 120 Volts 4.5 Lbs.
Preventive Maintenance Preventive maintenance is important to maintain the life of any appliance you own. The same is true with the St. Croix stoves. This stove has been designed in such a way to minimize preventive maintenance, thus minimizing any corrective maintenance, while maintaining a very user-friendly pellet stove. Just like the owner of a car would perform preventive maintenance, the owner of a pellet stove must perform preventive maintenance to maximize its performance.
Breaking Down Troubleshooting Electrical Wiring/Component Failure When called to service a stove problem, it is best to get as much information from the customer as possible. Many problems can be isolated over the phone. This practice of asking the "right" questions will save you time and also instill customer confidence. This shows you are prepared to solve the problem in a timely manner. If the stove is still in use, but doesn’t seem to be burning correctly, some typical questions to ask include: 1. 2. 3.
Wiring Diagram St. Croix Stoves with Versa Grate System Figure 9 The Electrical Components listed in this Schematic are present in all models with the Versa Grate Burn System.
When diagnosing a problem in a stove the following four areas of the stove must be considered. a. b. c. d. Electrical Mechanical Air Flow Fuel Flow Electrical There are up to14 electrical components used in the Stoves designed with the Versa Grate Burn System. Please look at the parts breakdown in each models manuals for exact location of these parts. 1. Digital Control board – Check fuses first 2. Auger motor 3. Versa Grate Motor (also called a Versa Grate Motor) 4.
The Digital Control Board The buttons on the board function as follows: (Refer to Figure 10. The touch pad buttons are labeled with the White numbers 1 through 6) 1. The Advance Heat button will advance the setting between level 1 and 5. Once you reach level 5, it will drop back to level 1. Each level has a LED light to indicate where the board is set. 2. The On/Off button turns the stove on and also acts as the toggle switch to reset the board after the board switches to Diagnostic mode. 3.
A Closer Look – Why and When does the ON/OFF Light blink? It is important to understand how the LED lights function when the stove is in use. Let’s take a look at the ON/OFF light. The ON/OFF light indicates more than the fact that the stove is running. The light blinks when first turning the stove on until the room fan starts blowing warm air into the room. This means the “PROOF OF FIRE” switch has sensed a fire in the stove by monitoring the Exhaust temperatures.
CAUTION: Using the fan button in a direct vent situation more than one adjustment may cause the Vacuum Switch alarm to shut the stove down by reducing the fan speed which in turn reduces the vacuum in the stove. (Vacuum switch requires a minimum of .05” WC of negative pressure) REMEMBER: Any adjustments to the board by using the Trim buttons will be lost in the event there is a power failure or if the unit is unplugged. The Control Board does not have a Memory Function.
1. Vacuum Loss of vacuum may be causes by: a. Operator error or neglect Leaving the Main Door open too long Forgetting to close the Main Door Leaving the Ashpan Door open too long Forgetting to close the Ashpan Door Allowing the Chimney to get plugged. Allowing the Ash Traps to get plugged. If an owner calls in with a #2 diagnostic light flashing, first cover all items listed that may be caused by incorrect operation of the stove.
If the wires are plugged in, check the opposite ends that are plugged into the control board. Make sure the wires a fully pushed into the Molex connector that plugs into the control board. They may look OK, but in fact may not be making contact the pins from the control board. Push the Gray wires into the Molex connector to ensure they are seated properly. Check the Gray wires for continuity if needed with an OHM meter. • If all wires and connections are correct, check the vacuum switch.
When the stove shuts down, and the number 3 LED light is blinking, let’s look at the simplest solution first. The following 2 items are Operator error. • Open the hopper and see if the unit has run out of pellets. If the hopper is empty, fill the hopper and re-light the stove. • Open the Main Door of the unit and look in the burnpot. Are there unburned pellets in the burnpot? Unburned pellets in the pot usually means the stove is running on a low setting and the damper is wide open.
If nothing is found in the drop chute area, empty the hopper and visually inspect the opening to the auger. If nothing is found, the auger will have to be pulled from the hopper to see if the obstruction is farther up in the tube. If the Auger Motor does not appear to be running or trying to run, it may be a problem with the power to the motor. Check for intermittent Line voltage on the Yellow wire plugged into the auger Motor.
Attention: There is a difference in Diagnostic Lights between first Generation Digital Control Boards and second Generation Control Boards. First generation control boards do not have a separate Diagnostic light. If the High Limit trips the auger shuts off and eventually when the stove shuts down the #3 LED starts to flash. Second Generation Digital Control Boards have a Diagnostic code specifically for the High Limit Switch. The #2 and #3 LED lights flash at the same time.
If they are inserted properly, use an OHM meter and check both Orange wires for continuity. As a last resort the control board should be replaced. If this problem is intermittent, it most likely is not the control board. The Auger Motor Auger Motor - Located near the back-center of the stove and mounted to the Auger Shaft. This 2-RPM motor rotates the Auger Shaft, which in turn feeds the wood pellets into the Burn Pot.
The Versa Grate System Versa Grate Motor - Located in the back of the stove and mounted to the sheet metal base. This 1RPM motor drives a cam-rod system, which ultimately slides the Grate Bottom back and forth beneath the Main Grate Body. This particular motion agitates the air passing through the Self-Cleaning Grate to improve the combustion process and also help prevent clinkers from forming on the surface of the Shaker Plate. All of the St. Croix Pellet stoves have the Versa Grate System in them.
Components – York insert Figure 15 Remember: It is important when ordering replacement parts to look in the specific parts list for each model. Parts may vary slightly from model to model. Versa Grate Maintenance Part of the Yearly Maintenance is lubricating the moving parts that make up the Versa Grate system. We recommend using a High Temp Anti-Seize in paste form. This should be applied in the areas indicated in Figures 16 and 17 on Page 38.
Versa Grate Lubrication – All Freestanding models Figure 16 Versa Grate Lubrication – York Insert models Figure 17 Page 38
Versa Grate System – Troubleshooting In trouble- shooting this system we will be looking at the electrical and the mechanical part of the system. The Versa Grate System should be running at all times when the stove is turned on. The power is supplied to the versa grate motor through the Purple Wire in the Harness. • Electrical - As an electrical component, the troubleshooting of the Versa Grate Motor can be broken down to a defective gear motor, a defective control board, or issues related to the wiring.
Figure 18 Details of Freestanding stoves and Inserts vary slightly; see Figure 16 and 17 on Page 38 for differences.
Convection Fan Room Air Fan – In the York Insert the fan is located near the back right-hand-side of the stove under the hopper and mounted to the sheet metal Air Jacket. In all Freestanding models the fan is located, either in the back of the pedestal or behind the Belly Ash pan in the Leg models. Heat that is generated within the Heat Exchanger can easily be transferred into the room; through use of this fan.
Combustion Fan Exhaust Fan - Located near the back left hand side of the stove under the hopper and mounted on top of the exhaust manifold. This multi-functional fan is used to draw either inside, or in some cases outside, combustion air into the firebox area of the stove and then expel the exhaust gases out through the exhaust manifold and into the atmosphere. The Advance Heat button will run the Combustion Exhaust Fan at 5 variable speed settings; there are a total of 5 Heat selections available.
If the wire is inserted properly, carefully check for voltage on the pin-out on the control board. If no voltage is present on the control board, the control board is bad and needs to be replaced. Check both wires in the harness for continuity if needed with an OHM meter. (White and Blue wire) Igniter Cartridge Heater – A Hot Rod heating element used in the process of igniting the pellets during the start-up cycle.
Power Cord, Wiring Harness & Terminal Block These are items that are frequently overlooked when troubleshooting the stove. When Diagnosing electrical problems be sure to first check all wires for damage, make sure all connections are tight. Check all wires in the Molex plug at the control board. If all else fails check wires that appear to be in good condition for continuity. It may be a problem that you can’t see. Use a good quality digital Volt/Ohm meter to check for Continuity.
This is a Normally Closed switch located near the left-hand-side of the stove and mounted directly on the sheet metal Air Jacket. Under normal operating conditions the Air jacket temperature registers below 250°F and the High-Limit 250°F Disc will read Normally Closed; this condition supplies power to the Anger Motor.
Ash Door Location: The Ash Door is located in the front of Pedestal or in front of the Belly Pan on leg models. Purpose: The ash door provides access to the ash pan. It is latched with quick release latches or with knobs. The door must be tightly closed during operation. The ash door gaskets must fit tight against the front of the pedestal or belly pan to create Negative Pressure for the stove to operate properly.
Heat Exchange Tubes Location: The heat exchange tubes are located in the top of the firebox. The back ends of the tubes are over the hot air plenum. The front of the tubes extend through the front wall of the stove. There are 16 Heat Exchange tubes in the Freestanding models and 9 Heat Exchange tubes in the York Insert. Purpose: The heat exchange tubes transfer heat from the firebox into the room air that is blown through the tubes.
Auger Assembly Location: The auger is located in the bottom center of the hopper. See Figure 22 0n Page 51. Purpose: The auger is the mechanism that transports pellets from the hopper to the burn grate. The 2 RPM motor located at the back of the auger is controlled by the Digital Control Board and is cycled on and off at varying rates depending on the selected Heat Setting. The ON time increases and the OFF time decreases when the Heat Setting is advanced to a higher setting.
Air Flow Combustion Air / Exhaust Flow The flow of Combustion air (also called Exhaust Flow) through all freestanding St. Croix pellet stoves follows a path similar to the one shown in the example below.
Convection Air / Room Air Flow The flow of Convection air (also called Room Air) through all freestanding St. Croix pellet stoves follows a path similar to the one shown in the example below.
Fuel Flow - Pellets The flow of Pellets through all freestanding St. Croix pellet stoves, follows a path similar to the one shown in the example below. Versa Grate System Figure 22 Also shown in the diagram above is the Versa grate System, showing the location of the Shaft/Cage weldment, the Cam, the Spacer, the Shaker Plate and the Grate Weldment. Note the orientation of the Igniter Tube through the Front of the stove.
Troubleshooting Flow Charts Digital Control Board – Board seems dead Digital Control Board – Fan Self Test at Start-Up Page 52
Auger Motor - Electrical Remember: Checking for Voltage either at the Harness or directly at the Pin-Out of the control board can only be done when the Auger should be running. The auger runs for 2 minutes during the Start-Up Cycle or runs at a #1 level 5 minutes after the stove is first turned on. Hot-wiring the fan direct with a power cord is also a good way to check the Auger motor.
Auger Motor – Mechanical Versa Grate Motor – Electrical Page 54
Versa Grate Motor – Mechanical Convection fan Attention: The control board sends power to the Convection blower for the first 30 seconds after turning the stove on and then shuts it off. If in doubt, bypass the Proof of Fire Switch and wait 5 minutes to check for voltage coming from the control board. After waiting 5 minutes you should see the ON/OFF light quit blinking and stay on constant. At that point you should read approximately 80 volts.
Combustion fan When in doubt Hot-Wire the fan to a direct source of power to see if fan runs using a cord with a ¼” insulated Male connector and ¼” insulated Female connector. Igniter Attention: The control board sends power to the blowers for the first 30 seconds after turning the stove on and then the convection fan shuts off. At this point the stove will go into the start-up cycle and the auger feeds pellets for 2 minutes and the Igniter comes on.
Vacuum Switch Loss of vacuum may be causes by Operator error or neglect Leaving the Main Door open too long Forgetting to close the Main Door Leaving the Ashpan Door open too long Forgetting to close the Ashpan Door Allowing the Chimney to get plugged. If an owner calls in with a #2 diagnostic light flashing, first cover all items listed that may be caused by incorrect operation of the stove. Quiz the owner about their habits in regards to the Periodic maintenance.
High Limit Switch The High Limit Switch shuts the stove down in an Over-Temp situation. This usually involves the room air fan. The fan may be defective or the fan may need cleaning. If the squirrel cages become dirty they can’t move enough air to keep the stove cool enough when running on the higher settings. If the High Limit trips more than once a closer look should be given to this area of the stove.
Proof of Fire Switch Page 59
Section B St. Croix Stoves with the Multi-Fuel Burn System – Models include: Auburn, Greenfield and Lancaster. There are 2 Multi-Fuel stove configurations that we offer; the Freestanding stove and Insert stove, all of which produce similar heat output BTU ratings. St. Croix Stoves with the Multi-Fuel Burn System are approved to burn Corn, Pellets, Cherry Pits, Wheat, Rye and Distiller’s Grain Pellets.
Multi-Fuel stoves are typically an automated controlled heating appliance, where extensive supervision generally is not necessary during operation, but even so, it's wise to be educated on various combustion characteristics that may cause potential safety hazards; such as a situation where excessive smoke and black soot may adhere to the viewing glass surface, this is a sign of either too many pellets or not enough air to create the correct combustion ratio.
PELLETS - Contact your dealer for more information on PFI approved wood pellet fuels. St. Croix Multi-Fuel stoves come equipped with a burn pot installed that has removable side shields. When burning pellets or any other fuels mixed with pellets, the side shields must be removed. Failure to remove the side shields will prevent fuel from spilling into the Ash Pan in the event the pot overloads. See figure 1 showing the removal of the side shields.
WHEAT - No Standard exists for Wheat used as Fuel. Inspect fuel before buying. Wheat is a small grain and burns in a similar manner as corn. It forms a clinker in the Burn Pot that tends to stick to the sides of the pot. The clinker may need to be pushed into the Ash Pan using a long narrow screwdriver. Slide the Screwdriver through the fingers of the Coal Rake to push the Clinker. Since Wheat is a small lightweight grain, more residue will blow out of the Burn Pot as it burns.
Products of Combustion a. b. c. d. The main product of combustion is heat. This is what we are looking for. Water in the form of condensation. This should be closely watched. Flue gases. Flue temperatures will vary between 200 and 450 degrees. Clinker & Ash residue. Clinkers The Patent Pending Burn System of a St. Croix Multi-Fuel stove will burn up all the available fuel leaving only the clinker residue in the pot. This will cause the pot to eventually fill up.
Pre-Delivery Check – Multi-Fuel Stoves One of the easiest ways to prevent problems in the field is to inspect the unit before leaving to install the stove. Offer the customer the option to Pre-Burn the stove for them to burn off the odors associated with the first burn. The following checklist is to be used to quickly inspect the stove: WARNING: Use caution when inspecting electrical connections to prevent contact with live circuits. 1.
Level 1 On Time 1.50 seconds Default setting Figure 3 Level 1 On Time 1.75 seconds Auger Trim Level 1 On Time 1.25 seconds Auger Trim Draft Trim Button Adjusts Combustion fan on level 1 only. Figure 4 Figure 5 Figure 6 g. The Auger ON Time for level 1 is adjustable to fine-tune the stove. Once the stove is turned on the #1 LED should be on. See Figure 3 above - This has an ON Time of 1.5 seconds h. Press the Feed Trim button (button #5, see Figure 2) once and the #1 and #5 light will come on.
m. Press the Heat Advance button (button #1, see Figure 2) and advance the setting to level #5. The control board slowly ramps up by advancing to the next level and waiting for 5 minutes at each level until it reaches level 5. This allows the stove to start up smoothly with out overloading the burn pot. After each 5-minute delay you will hear the blowers pick up in speed. n. Press the Auger button and the auger will feed pellets until the button is released.
NOTE: If the stove has been brought in from a cold environment (an unheated warehouse), the reading you get may be lower than normal. This is due to the High Temp Lubrication used in the Combustion fan not allowing the fan to spin as easily as a fan at room temperature.
g) Back pressure on the stove caused by wind direction and velocity directly into the exhaust termination point. h) Increasing the number of elbows in the inlet pipe run. See guidelines on the next page for the venting configurations of a Multi-Fuel stove.
Flame Pattern Interpretation and Burn Characteristics The most effective method by which to determine the proper ratio of combustion air to fuel is to observe the flame pattern. This should only be observed after the stove has been operating at the desired Heat Adjust Selection for a period of time. Even though a Negative Air Pressure Gauge measures quite accurately, visual observation of the flame pattern and burn characteristics inside the burn pot tend to be a highly effective diagnostic tools as well.
Data Table Based on the default 11.5 second Cycle Time. Cycle time equals the ON time & OFF Time combined. Heat Level Selection Auger ON (Seconds) Combustion Fan Voltage +/- 3 Volts Convection Fan Voltage +/- 3 Volts Corn Fuel (Lbs./Hour) +/- 10% Start-Up Cycle Off for the first 5 minutes 100 Volts OFF NA 1 1.5 90 Volts 83 Volts 1.7 Lbs. 2 2.0 98 Volts 90 Volts 2.25 Lbs. 3 2.5 105 volts 98 Volts 3.1 Lbs 4 3.0 111 volts 103 Volts 3.7 Lbs. 5 3.5 120 volts 120 Volts 4.25 Lbs.
Preventive Maintenance Preventive maintenance is important to give you trouble free operation of any product you own. The same is true with the St. Croix Multi-Fuel stove. This stove has been designed in such a way to minimize preventive maintenance, thus minimizing any corrective maintenance, while maintaining a very user friendly stove. Just like the owner of a car would perform preventive maintenance, the owner of a Multi-Fuel stove would perform preventive maintenance to maximize its performance.
2 – Pull out Slide Bottom to drop the Ash, Clinker and remaining residue into the ash pan. Figure 11 3 – Push in the Slide Bottom.
4 – Pull out the “Coal Rake” and drop the hot coals in the Burn Pot. Figure 13 c) d) e) f) Clean the window. Clean/polish the plated surfaces with a soft cloth and a mild glass cleaner. Inspect the flame for a sharp, white/yellow flame. Clean ash off of the heat exchangers by pulling the Tube Scraper in and out. Periodic Maintenance (as needed) - Performed by Customer or Service Tech a) Clear the burn grate holes. b) Clean out the ash traps in the lower corners of the back wall of the firebox.
Trouble Shooting Corn Stoves Electrical Wiring/Component Failure When called to service a stove problem it is best to get as much information from the customer as possible, many problems can be isolated over the phone. This practice of asking the "right" questions will save you time and also instill customer confidence, in being prepared to solve his problem in a timely manner. If the stove is still in use, but doesn’t seem to be burning correctly, some typical questions to ask include: 1. 2. 3. 4. 5. 6. 7.
Wiring Diagram – all St. Croix Corn Stoves Figure 14 The Electrical Components listed in this Schematic are present in all Multi-Fuel models with the exception of the Versa Grate motor and the Igniter.
When diagnosing a problem in a stove the following four areas of the stove must be considered. a) b) c) d) Electrical Mechanical Air Flow Fuel Flow Electrical There are 12 electrical components in a St. Croix Corn stove. See Figure 15 on Page 78. 1. 2. 3. 4. 5. 6. 7. 8.
The Digital Control Board The buttons on the board function as follows: (Refer to Figure 15. The touch pad buttons are labeled with the white numbers 1 through 6) 1. The heat advance button (1) will advance the setting between level 1 and 5. Once you reach level 5, it will drop back to level 1. Each level has a LED light to indicate where the board is set. 2. The On/Off button (2) turns the stove on and also acts as the toggle switch to reset the board after the board switches to Diagnostic mode. 3.
A Closer Look It is important to understand how the LED lights function when the stove is in use. Let’s take a look at the ON/OFF light. The ON/OFF light indicates more than the fact that the stove is running. The light blinks when first turning the stove on until the room fan starts blowing warm air into the room. This means the “PROOF OF FIRE” switch has sensed a fire in the stove by monitoring the Exhaust temperatures.
Diagnostic Features The control board offers a certain level of diagnostics to help in trouble shooting the stove. The two areas that are diagnosed by sensors in the stove are: 1. 2. 3. Vacuum – Sensed in the Firebox and Ash pan area of the stove. Heat – Proof of Fire sensed in the Exhaust Temperatures of the stove. High Limit – Over Temp situation sensed in the Firebox.
1. Vacuum Loss of vacuum may be causes by: a. Operator error or neglect Leaving the Main Door open too long Forgetting to close the Main Door Leaving the Ash pan Door open too long Forgetting to close the Ash pan Door Allowing the Chimney to get plugged. If an owner calls in with a #2 diagnostic light flashing, first cover all items listed above that may be caused by incorrect operation of the stove. Quiz the owner about their habits in regards to the Periodic maintenance.
• Check all wiring connections related to the Vacuum system first. Check the 2 Gray wires that are plugged into the vacuum switch. If the wires are plugged in, check the opposite ends that are plugged into the control board. Make sure the wires a fully pushed into the Molex connector that plugs into the control board. They may look OK, but in fact may not be making contact the pins from the control board. Push the 2 Gray wires into the Molex connector to ensure they are seated properly.
When the stove shuts down and the number 3 LED light is blinking let’s look at the simplest solution first. The following 2 items are Operator error. • Open the hopper and see if the unit has run out of fuel. If the hopper is empty, fill the hopper and re-light the stove. • Open the Main Door of the unit and look in the burnpot. Is there unburned fuel in the burnpot? Unburned fuel in the pot usually means the stove is running on a low setting and the damper is wide open.
If nothing is found in the drop chute area, empty the hopper and visually inspect the opening to the auger. If nothing is found, the auger will have to be pulled from the hopper to see if the obstruction is farther up in the tube. If the Auger Motor does not appear to be running or trying to run, it may be a problem with the power to the motor. Check for intermittent Line voltage on the Yellow wire plugged into the auger Motor.
d. If the blower is running and the stove has been in use for some time, check the blower for a build-up of dust, lint or pet hair. When the squirrel cage gets dirty, it can’t move the proper amount of air and the stove could overheat and shut down. If the switch has been reset and the auger does not come on the next time you start the stove, remove the 2 Orange wires from the switch and check the switch for continuity. Replace if it’s defective.
closed. If it takes significantly longer than 5 seconds, if it doesn’t click at all and never closes, or if the switch is constantly closed and never opens, replace the switch. If the switch is not defective, unplug the 2 Brown wires from the switch and jump them together. Turn the stove on and wait 5 minutes. After five minutes you should see 2 things: 1. The room fan comes on. 2. The ON/OFF light will quit blinking and be ON constantly.
• Check for power on the Auger motor circuit. Check all wiring connections to the Auger Motor. The auger Motor has 2 Red wires. One wire is plugged into the Terminal block; this is where all the Common connections are made. The other wire is plugged into a Yellow wire, which is the Hot connection to the motor. The Yellow wire will send an intermittent line voltage signal to the Auger motor. Check the Yellow wire for voltage.
Hot Wire the fan, using a power cord with a ¼” Male and ¼” Female spade connector at this time to see if the fan is defective. If the fan runs, continue trouble shooting the fan circuit in the stove. If there isn’t any voltage on the Pink wire, check to make sure the Pink wire is inserted properly into the Molex connector that plugs into the control board. The wire may appear to be inserted properly, but sometimes is not connected to the pin on the control board.
Check the wiring connections to the fan. The White wire from the fan connects to a White wire in the Harness that connects to the Terminal Block in the back of the stove and the Black wire from the fan is connected to the Blue wire in the wiring harness. There is a 3rd wire coming from the Combustion fan that is not used in the models with the digital control board. This is a Brown wire and it is tied back in the harness. If all connections are tight, check for Voltage at the Blue wire.
Safety Features - The remaining electrical components make up the sensors that monitor the stoves for concerns that require the stove to be shut down. Vacuum Switch Vacuum Switch – Normally Open, Set Point .05” WC negative Pressure. To troubleshoot the Vacuum switch refer to the section covering the diagnostic features of the Control Board covering the #2 LED diagnostic light. This switch senses the vacuum (Negative Pressure) in the Firebox and Ash pan area.
The Room Air Fan, the Combustion Fan and the Versa Grate Motor continue to run until the Proof of Fire Switch measures temperatures below 90 degrees in the exhaust system and the P.O.F. switch drops out. At this time the #3 Diagnostic LED light will start blinking with a First Generation Digital Control Board and the #2 and #3 LED light flashes with a Second Generation Control Board. (First Generation Control Boards do not have the Thermostat Slide Switch on the front of the board .
Ash Door Location: The Ash Door is located in the front of Pedestal or in front of the Belly Pan on leg models. Purpose: The ash door provides access to the ash pan. It is latched with quick release latches. The door must be tightly closed during operation. The ash door gaskets must fit tight against the front of the pedestal or belly pan to create Negative Pressure for the stove to operate properly.
Heat Exchange Tubes Location: The heat exchange tubes are located in the top of the firebox. The back ends of the tubes are over the hot air plenum. The front of the tubes extend through the front wall of the stove. There are 16 Heat Exchange tubes in the Multi Fuel stoves Purpose: The heat exchange tubes transfer heat from the firebox into the room air that is blown through the tubes. Heat Exchange Tube Scraper Location: Above the door, extending through the Hot Air opening.
Air Plenum – Warm Air Plenum Location: The warm air plenum carries room air from the convection fan, past the hot air plenum where it picks up heat. The room air is then delivered through the heat tubes into the room. See Figure 21 on Page 96. Purpose: The warm air plenum is located behind the hot air plenum and is part of the Heat Exchange System. Auger Assembly Location: The auger is located in the bottom center of the hopper. See Figure 22 on Page 97.
Clinker Removal System – Slide-Out Bottom Location: Purpose: The Slide-Out Bottom is located below the Burn Pot and the lower rod is used to pull the slide open to drop the clinker. See figure 22 on page 97. See Figures 10 through 13 on Pages 72 through 74 for more information on dropping the clinker Once the Burn Pot has filled with clinker residue the clinker can be dropped out through the bottom of the pot.
Convection Air / Room Air Flow The flow of Convection air (also called Room Air) through all St. Croix Multi-Fuel stoves follows a path similar to the one shown in the example below.
Fuel Flow – Multi-Fuel Stoves The flow of Corn through all freestanding St. Croix Corn stoves, follows a path similar to the one shown in the example below.
Troubleshooting Flow Charts Digital Control Board – Board seems dead Digital Control Board – Fan Self Test at Start-Up Page 98
Auger Motor - Electrical Remember: Checking for Voltage either at the Harness or directly at the Pin-Out of the control board can only be done when the Auger should be running. The auger runs for 2 minutes during the Start-Up Cycle or runs at a #1 level 5 minutes after the stove is first turned on. Hot-wiring the fan direct with a power cord is also a good way to check the Auger motor.
Convection Fan Attention: The control board sends power to the Convection blower for the first 30 seconds after turning the stove on and then shuts it off. If in doubt, bypass the Proof of Fire Switch and wait 5 minutes to check for voltage coming from the control board. After waiting 5 minutes you should see the ON/OFF light quit blinking and stay on constant. At that point you should read approximately 80 volts.
Vacuum Switch Loss of vacuum may be causes by Operator error or neglect Leaving the Main Door open too long Forgetting to close the Main Door Leaving the Ashpan Door open too long Forgetting to close the Ashpan Door Allowing the Chimney to get plugged. If an owner calls in with a #2 diagnostic light flashing, first cover all items listed that may be caused by incorrect operation of the stove. Quiz the owner about their habits in regards to the Periodic maintenance.
High Limit Switch The High Limit Switch shuts the stove down in an Over-Temp situation. This usually involves the room air fan. The fan may be defective or the fan may need cleaning. If the squirrel cages become dirty they can’t move enough air to keep the stove cool enough when running on the higher settings. If the High Limit trips more than once a closer look should be given to this area of the stove.
Proof of Fire Switch Page 103
Afton Bay - Part Numbers Page 104
CAUTION: The electrical components of the stove are not owner serviceable. Call your dealer for proper diagnosis of electrical problems and service to those components.
Page 106
# 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 PART NUMBER 80P53669-R 80P52887-R 80P52232-R 80P53667-R 80P20168-R 80P20038-R 80P20001-R 80P52629-R 80P52628-R 80P65021-R 80P53773-R 80P53723-R 80P20131-R 80P20026-R 80P53724-R 80P52796-R 80P20035-R 80P20024-R 80P20027-R 80P20034-R 80P20183-R 80P53681-R 80P53785-R 80P22348-R 80P52658-R 80P30045-R 80P52630-R 80P20278-R 80P52957-R 80P20245-R 80P50858-R 80P53666-R 80P20248-R 80P30191-R DESCRIPTION CONVECTI
Hastings Cast iron Parts When installing the stove it is best to remove the castings to make it easier to handle. This makes the stove approximately 200 Lbs. lighter.
Page 109
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 PART NUMBER 80P53670-R 80P20038-R 80P20001-R 80P52628-R 80P52629-R 80P52632-R 80P30045-R 80P52630-R 80P20278-R 80P20245-R 80P52232-R 80P20168-R 80P53650-R 80P52887-R 80P52957-R 80P30191-R 80P20248-R 80P52658-R 80P53785-R 80P53681-R 80P20183-R 80P52944-R 80P52375-R 80P20022-R 80P52357-R DESCRIPTION CONVECTION FAN ASSEMBLY PROOF OF FIRE SWITCH COMBUSTION FAN VACUUM SWITCH MANUAL RESET HIGH LIMIT CONTROL BOARD T-STAT WIRE TERMINAL WIRING TER
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 80P20132-R 80P52947-R 80P53773-R 80P53677-R 80P52773-P 80P52237-R 80P52038-R 80P52980-R 80P50553-R 80P52643-R 80P52765-R 80P52967-R 98360A100 80P53666-R 80P52679-R 80P53684-R 80P53682-R 80P52567-R 80P50858-R 80P52956-R 80P53632-R 80P52645-R 80P52652-R 80P52954-R 80P52677-R 80P20296-R 80P52953-R 80P52372-R 80P52376-R 80P50560-R 80P52981-R 80P52955-R DOOR GASKET KIT DOOR FRAME WELDMENT DOOR HANDLE HANDLE MOUNT PL
Prescott Series Parts # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PART NUMBER 80P20003-R 80P20038-R 80P20001-R 80P52628-R 80P52629-R 80P22348-R 80P30045-R 80P52630-R 80P20278-R 80P20245-R 80P52232-R 80P20168-R 80P53650-R 80P52887-R 80P52957-R DESCRIPTION CONVECTION FAN PROOF OF FIRE SWITCH COMBUSTION FAN VACUUM SWITCH MANUAL RESET HIGH LIMIT CONTROL BOARD T-STAT WIRE TERMINAL WIRING TERMINAL BLOCK AUGER MOTOR AUGER GASKET QUICK DISCONNECT GASKET COMBUSTION FAN GASKET EXHAUST ADAPTER WELDMENT PIPE CONNECTOR ASS
# 16 17 18 19 20 21 22 23 24 25 25 26 26 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 PART NUMBER 80P20248-R 80P30191-R 80P52658-R 80P53785-R 80P53681-R 80P20183-R 80P52944-R 80P20033-R 80P53707-R 80P53694-R 80P20036-BN 80P20036-R 80P20091-R 80P20032-R 80P20106-R 80P65021-R 80P52668-R 80P52645-R 80P52237-R 80P52980-R 80P52038-R 80P52592-R 80P50553-R 80P52765-R 90596A029 80P53698-R 80P53695-R 80P52955-R 80P50560-R 80P52376-R 80P52953-R 80P52372-R 80P20296-R 80P52727-R 80P
York Parts Layout # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 PART NUMBER 80P52893-R 80P52897-R 80P52899-R 80P52897-R 80P52901-R 80P52263-R 80P52263-R 80P52677-R 80P30575-R 80P30572-R 80P30576-R 80P53616-R 80P52144-R 80P52145-R 80P52146-R 80P52087-R 80P53770-R 80P20306-R 80P52099-R 80P53788-R 92N4114 80P22348-R DESCRIPTION ASH LIP/DOOR SIDE ASHPAN CENTER ASHPAN SIDE ASHPAN LOWER TRIM PANEL DECORATIVE GRILL – RIGHT DECORATIVE GRILL – LEFT IGNITER/HOT ROD STEEL BRICK PANEL – RIGHT SIDE STEEL
Page 115
# 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 PART NUMBER DESCRIPTION 80P20296-R VERSA GRATE MOTOR 80P53402-R MOTOR MOUNT ASSEMBLY 80P53400-R SHAFT/CAGE WELDMENT 80P20340-R VERSA GRATE SPRING 80P50560-R CAM 80P20196-R CONVECTION FAN GASKET 80P20000-M CONVECTION FAN 80P50899-R MOTOR RETAINER BRACKET 80P52630-R TERMINAL BLOCK 80P20278-R AUGER MOTOR 80P20248-R 5/8” COLLAR W/ SETSCREW 80P52957-R MOTOR MOUNT BRACKET 80P20245
Auburn Parts Lay out # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PART NUMBER 80P20003-R 80P20038-R 80P20001-R 80P52628-R 80P52629-R 80P52632-R 80P30045-R 80P52630-R 80P20278-R 80P20245-R 80P52232-R 80P20168-R 80P53650-R 80P52887-R 80P52957-R DESCRIPTION CONVECTION FAN PROOF OF FIRE SWITCH COMBUSTION FAN VACUUM SWITCH MANUAL RESET HIGH LIMIT CONTROL BOARD T-STAT WIRE TERMINAL WIRING TERMINAL BLOCK AUGER MOTOR AUGER GASKET QUICK DISCONNECT GASKET COMBUSTION FAN GASKET EXHAUST ADAPTER WELDMENT PIPE CONNECTOR ASSE
# 16 17 18 19 20 21 22 23 24 25 25 26 26 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 PART NUMBER 80P20248-R 80P30191-R 80P52658-R 80P53785-R 80P53681-R 80P20183-R 80P52944-R 80P20033-R 80P53707-R 80P53694-R 80P20036-BN 80P20036-R 80P20091-R 80P20032-R 80P20106-R 80P65021-R 80P52668-R 80P52645-R 80P52237-R 80P53836-R 80P53649-R 80P52592-R 80P52627-R 80P53657-R 80P30050-R 80P30049-R 80P30578-R 80P30577-R 80P30579-R DESCRIPTION 5/8” COLLAR WITH SETSCREW AUGER MOTOR RETAINER BRACKET CONTROL BOARD COVER CO
Greenfield Cast iron Parts When installing the stove it is best to remove the castings to make it easier to handle. This makes the stove approximately 200 Lbs. lighter.
Page 120
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 PART NUMBER 80P53670-R 80P20038-R 80P20001-R 80P52628-R 80P52629-R 80P52632-R 80P30045-R 80P52630-R 80P20278-R 80P20245-R 80P52232-R 80P20168-R 80P53650-R 80P52887-R 80P52957-R 80P30191-R 80P20248-R 80P52658-R 80P53785-R 80P53681-R 80P20183-R 80P52944-R 80P52375-R 80P20022-R 80P52357-R 80P20132-R 80P52947-R 80P53773-R 80P53677-R 80P52773-P 80P52237-R 80P30043-R 80P5
Lancaster Parts Lay-Out Page 122
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 30 31 32 33 34 35 36 37 38 39 40 41 42 43 PART NUMBER 80P20003-R 80P20038-R 80P20001-R 80P52628-R 80P52629-R 80P52632-R 80P30045-R 80P52630-R 80P20278-R 80P20245-R 80P52232-R 80P20168-R 80P53650-R 80P52887-R 80P52957-R 80P30191-R 80P20248-R 80P52658-R 80P53785-R 80P53681-R 80P20183-R 80P52944-R 80P52375-R 80P20022-R 80P52357-R 80P20132-R 80P52947-R 80P53773-R 80P53677-R 80P20131-R 80P20131-BN 80P52237-R 80P53631-R 80P52946-R
TechNet Manufactured and Distributed by Even Temp, Inc. The newsletter for Technical and Warranty issues SCF-050 Service Manual Addendum Inside this issue: This addendum covers the SCF-050 Multi-Fuel Add-On Furnace heating system. Please read through Section B of the St Croix Service Manual that covers the Multi-Fuel Burn System. The design of this furnace is based on the Freestanding St Croix stoves.
2. The On/Off button (2) turns the Furnace On and Off. It will also reset the board after the board has sensed a problem and is flashing a Diagnostic code. 3. The Auger button (3) will allow the customer to manually auger fuel into the burn pot on start up when needed. This is particularly helpful in priming the Auger Tube when it is empty. 4. The Draft Trim button (4) allows for adjusting the Exhaust fan voltage on Heat Level 1 only.
Troubleshooting Flow Charts for the SCF-050 The Trouble shooting Flow Charts for the following components will be referenced from Section B of this Service Manual to eliminate duplicating the charts: Digital Control Board Please refer to page 100 of the original Digital Control Board Service Manual. Combustion Blower Please refer to page 103 of the original Digital Control Board Service Manual. Vacuum Switch Please refer to page 103 of the original Digital Control Board Service Manual.
Fan/Limit Control The Fan/Limit Control shuts the furnace down in an Over-Temp situation. This usually involves the room air fan. The fan may be defective or the fan may need cleaning. If the squirrel cage becomes dirty, they can’t move enough air to keep the furnace cool enough when running on the higher settings. If the High Limit trips more than once a closer look should be given to Convection Blower of the furnace.
Auger Motor - Electrical Remember: Checking for Voltage either at the Harness or directly at the Pin-Out of the control board can only be done when the Auger should be running. The auger runs for 2 minutes during the Start-Up Cycle or runs at a #1 level 5 minutes after the stove is first turned on. Hot-wiring the fan direct with a power cord is also a good way to check the Auger motor.
Fan/Limit Control - Replacement Before installing the new Fan/Limit Control, be sure to remove the BreakAway tab between the left and right wiring circuits. See figure 6 to the left. After replacing the Fan/Limit Control, remember to adjust the Fan ON and the Fan OFF settings. Failure to adjust these settings may cause the Blower to short cycle. Figure 6 Feed Rate Adjustment The Default Cycle Time is 10.0 seconds. Please see figure 7 to the left. The 10.0-second cycle can be changed to 8.
SCF-050 Wiring Schematic The Electrical Rating of this furnace is: 120 Volt, 60 Hz, 4 AMP. The minimum recommended circuit is 15 Amp. A dedicated circuit for the furnace is recommended.
SCF-050 Parts Lay-out Page 8
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 PART NUMBER 80P53707-R 80P53677-R 80P53797-R 80P20132-R 80P53798-R 80P30162-R 80P52592-R 80P53623-R 80P52568-R 80P53619-R 80P2001-R 80P30144-R 80P30089-R 80P30102-R 80P30085-R 80P53835-R 80P30207-R 80P30045-R 80P30205-R 80P30147-R 80P30169-R 80P53813-R 54995K24-R 80P30658-R 80P20168-R 80P52237-R 80P53836 -R 80P53810-R 80P30168-R 80P53843-R 80P30092-R 80P30151-R 80P30206-R 80P30090
# 46 47 48 49 50 51 52 53 54 PART NUMBER 80P20038-R 80P52630-R 80P52957-R 80P20248-R 80P20278-R 80P30191-R 80P20245-R 80P50858-R 80P53807-R DESCRIPTION PROOF OF FIRE SWITCH TERMINAL BLOCK MOTOR MOUNT BRACKET ASSEMBLY 5/8” COLLAR W/ SETSCREW AUGER MOTOR MOTOR RETAINER BRACKET AUGER GASKET AUGER BUSHING WASHER AUGER WELDMENT Page 10
SCF-050 Data Table Based on a default Cycle Time of 10.0 seconds. Cycle time equals the ON time & OFF Time combined. Heat Level Selection Auger ON (Seconds) Combustion Fan Voltage +/- 10% Convection Fan Voltage +/- 10% Corn Fuel (Lbs./Hour) +/- 10% Start-Up Cycle Off for the first 5 minutes 100 Volts OFF NA 1 2.5 90 Volts 120 Volts 2.0 Lbs. 2 3.0 98 Volts 120 Volts 2.75 Lbs. 3 3.5 105 volts 120 Volts 3.5 Lbs 4 4.0 111 volts 120 Volts 4.35 Lbs. 5 4.5 120 volts 120 Volts 5.
TechNet Manufactured and Distributed by Even Temp, Inc. The newsletter for Technical and Warranty issues SCF-Revolution Service Manual Addendum For SCF-Revolution Furnace see Section 1 For Lincoln SCR see Section 2 The Differences between the Revolution Burn System and Conventional St.
SCF – Revolution – Section 1 Control Board This Control Board offers several advantages as far as being able to make adjustments to the Feed Rates and the Combustion Fan Voltages. All adjustments can now be made from the front of the control board instead of having to access the back side of the board and change jumper settings. There are 4 different Programs on the board to choose from depending on the choice of fuel (Pellets, Corn Wheat, Rye, Cherry Pits or Distiller’s Grain Pellets).
Choosing which program to run the unit depends on several things. First make sure the program matches the fuel being used. After burning the Furnace and adjusting the Draft, is the furnace having difficulty burning the fuel and is the burn pot overloading? If this is the case, then simply adjust the Program to one that uses a longer Cycle Time. This will slow the feedrate down and balance the burn. Keep in mind there is a huge difference between many fuels on the market and how they burn.
How to adjust the Furnace for different Fuels? The furnace is approved for 6 fuels. They are Pellets, Cherry Pits, Corn, Wheat, Rye and Distiller’s Grain pellets. They are grouped in 2 categories: 1 – Pellets and Cherry Pits, lower in moisture content and easy to ignite. 2 – Corn, Wheat, Rye and Distillers Grain, these fuels are higher in moisture content and therefore more difficult to start. The furnace basically has 2 operating modes: 1 - Manual Mode.
overloads during ignition, adjust the Feedrate down or switch Programs until these fuels ignite without overloading the Pot. The units must be adjusted for unattended use. The adjustments that need to be made are: 1 – Choosing the correct Program for the fuel used. 2 – Adjusting the Damper (if needed) 3 – Adjusting the Feedrate (if needed) 4 – Adjusting the Draft Fan Voltage (if needed) 5 – Adjusting the Heat Level to a lower setting (to prevent the furnace from excessive ON/OFF cycling).
Figure 6 The Revolution Burn System is designed to come apart for maintenance or to replace the Drum if needed. Revolution Pot Clean-Out Access Cover There is a cover in the front of the furnace that gives access to cleaning the holes in the front and back of the Revolution burn pot. The holes should be checked periodically to keep the units burning properly. For proper Ignition the hole in the front of the pot for the Igniter needs to be kept open.
Figure 7 Figure 7 shows an exploded view of how to disassemble all components of the Revolution Burn Pot System. The Burn pot is shown outside the furnace, but when cleaning the holes in the pot it will remain inside the furnace.
See Figure 7 on the previous page for information on removing the Igniter Cover and Igniter/Access Cover. Once removed use a 3/16” diameter rod or a long Phillips Screw Driver (should be long enough to reach the holes on the back side of the pot). To clean the holes in the front side and the back side at the same time, simply insert the cleaning tool through one of the front holes and push it all the way through and clean the hole that lines up behind it at the same time. (See Figure 8 on the previous page.
Figure 10 (Lincoln SCR Drive Assembly shown) Above are the components that make up the Drive system in a unit with the Revolution Burn Pot Design. A Gear Motor, 2 Switches and a Drive Shaft are the major components along with several brackets that mount these components in the unit. Figure 11 to the left shows a view of the system when looking directly at the motor and the switches. It is important to note the location of Switch 1 and Switch 2. Switch 1 is not monitored by the Control Board.
The unit will behave differently depending on which switch is not functioning or is not adjusted correctly. The end result is always a #4 Diagnostic Light flashing. Switch #1 is wired to the Normally Open Connectors. The voltage on this switch is 120 Volts AC. The switch is connected to the Gearmotor. Its function is to complete the Rotation that was started by the Control Board. Switch #2 is wired to the Normally Closed Connectors. The voltage is 5 Volts DC.
Following is a description of events if either one of the switches isn’t adjusted correctly: First Example: Switch 1 is not adjusted to close when it is on the edge of the disc. When the unit is started, the Control Board first looks for vacuum to be detected in the firebox (this takes approximately 60 seconds), and then it sends power through the purple wire to the Gearmotor for 3.5 seconds. This will position the switches on the edge of the disc as seen in figure 13.
finishes the rotation by sending power through the purple wire back to the gearmotor until the switch drops in the notch again. In this example however Switch #2 is not adjusted properly and the switch does not open while on the edge of the disc as it rotates through and drops back into the notch. The Control Board does not detect Switch #2 opening when it should. At this point the Control Board immediately goes into #4 Alarm.
Before using the Fan/Limit Flow chart, verify that the #2 switch is functioning correctly. The 2 orange wires must be making contact through the switch. NOTE: The Room Air Fan (Convection Blower) is wired independently from the Control Board. Keep in mind when troubleshooting this area of the furnace that replacing the Control Board will not fix any issues related to the Blower and Fan/Limit Control. NOTE: A dirty Filter may cause the furnace to run hotter and may contribute to the unit shutting down.
Rotation Motor Sensor - Adjustment (#2 Switch, see figure 14) – The Fan/Limit Control must be working correctly before using this Flow Chart Rotation Motor – Mechanical The Drum could be jammed due to a foreign object being stuck in the drum, or in the event of a failed ignition there is enough unburned fuel in the pot to prevent it from rotating. If this is the problem, unplug the unit and use a vacuum to clean out the fuel in the pot.
Rotation Motor Switch– Electrical (Switch #1) Rotation Motor Sensor – Electrical (Switch #2) Gearmotors – Relay Figure 17 Page 15 - 15 -
There are 3 gearmotors in the Revolution Technology. Figure 17 shows the location of the 3 motors and the Relay that is used in this design. To trouble shoot any of the Auger Motors it is important to understand the relationship to the Relay they have. Figure 18 explains the wires that are connected to the Relay. Figure 18 The Small and Main Hopper Auger Motors are wired through the Relay. They are connected to the “Normally Closed” circuit in the Relay.
Auger Motor – Mechanical (Both Auger motors) Auger Motor Main Hopper – Electrical Auger Motor Small Hopper – Electrical Page 17 - 17 -
Convection Blower Digital Control Board Please refer to page 52 for the Troubleshooting Flow Chart for the Control Board found in the original Digital Control Service Manual. Combustion Fan Please refer to page 56 for the Troubleshooting Flow Chart for the Combustion Fan found in the original Digital Control Service Manual. Igniter Please refer to page 56 for the Troubleshooting Flow Chart for the igniter found in the original Digital Control Service Manual.
SCF-Revolution Data Table Based on a Cycle Time of 5.5 seconds. Cycle time equals the ON time & OFF Time combined. Heat Level Selection Auger ON (Seconds) Start-Up Cycle Combustion Fan Voltage +/- 10% Convection Fan Voltage +/- 10% Pellets (Lbs./Hour) +/- 10% 3 min ON 6 Min OFF 9 Min Level 1 Line Volts OFF NA 1 2.5 90 Volts 120 Volts 2.5 Lbs. 2 3.0 100 Volts 120 Volts 3.6 Lbs. 3 3.5 106 volts 120 Volts 4.7 Lbs 4 4.0 112 volts 120 Volts 5.8 Lbs. 5 4.5 120 volts 120 Volts 6.
Wiring Schematic The Electrical Rating of this furnace is: 120 Volt, 60 Hz, 4 AMP. The minimum recommended circuit is 15 Amp. A dedicated circuit for the furnace is recommended.
SCF-Revolution Parts Layout Page 21 - 21 -
SCF-Revolution Parts Layout - Continued Page 22 - 22 -
# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 PART NUMBER 80P30330 80P30311 80P30314 80P30191 80P20278 80P30305 80P30248 80P30444 80P20248 80P30090 80P52957 80P50858 80P20245 80P53859 80P53853 80P30306 80P53824 80P30169 80P53812 80P52579 80P53795 80P30147 80P30312 80P30248 80P30313 80P30317 80P30445 80P53871 80P30045 80P53835 80P30333 80P30431 80P20038 80P30446 80P52628 80P52710 80P53805 80P20168 80P53804 80P53630 80P53807 80P5085
44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 80P52957 80P30191 80P20248 80P20278 80P30248 80P20278 80P30250 80P30268 80P53847 80P30209 80P20248 80P30206 80P52237 80P30162 80P53864 80P53797 80P30329 80P30327 80P30328 80P53710 80P53958 80P30316 80P30155 80P30094 80P53800 80P53677 80P53707 80P53795 80P30655 80P30687 80P30699 1/4-20X3/4HHCS 80P53867 80P53708 80P30709 MOTOR MOUNT BRACKET ASS.
TechNet Manufactured and Distributed by Even Temp, Inc. The newsletter for Technical and Warranty issues 1/5/10 Lincoln-SCR Service Manual Addendum Lincoln SCR - Section 2 Lincoln-SCR Access to Burn 25 System Components Lincoln-SCR - General information 26 Lincoln-SCR Control Board Pages 26-27 26 Troubleshooting Flow Carts for the Lincoln-SCR 28 Lincoln-SCR Convection Blower Pages 28-29 Lincoln-SCR Burn System Please read Section 1 completely before reading section 2 for the Lincoln-SCR.
Lincoln SCR Section 2 In an effort not to duplicate much of the information from the previous sections please read pages 4 through 12. The Lincoln SCR is a freestanding stove based on the SCF-Revolution furnace design. There are several small differences between the two. They are: 1 – The programs on the Control Board. They reflect the lower BTU Rating of the stove.
Program 1 - The Cycle Time is 7.5 seconds. This program will be the default program when the Stove is first plugged in. This program is for use with Pellets and Cherry Pits. Program 2 - The Cycle Time is 8.5 seconds. This program is for use with Pellets, Corn, Wheat, Rye, Cherry Pits and Distillers Grain Pellets. Program 3 - The Cycle Time is 9.5 seconds. This program is for use with Pellets, Corn, Wheat, Rye, Cherry Pits and Distillers Grain Pellets. Program 4 - The Cycle Time is 10.5 seconds.
Troubleshooting Flow Charts for the Lincoln SCR In an effort not to duplicate information already in this manual we will use any of the SCF-Revolution Furnace Troubleshooting Flow Charts that apply to the Lincoln SCR. Two Flow Charts specific to The Lincoln SCR are needed. Convection Blower Figure 3 The Lincoln SCR utilizes a separate “Normally Open” Heat Sensing Disc to turn the Convection Blower ON and OFF. The voltage is controlled by the same circuit as the Combustion fan.
This design changes how the initial “Fan Test” runs after turning the unit ON. The Convection Fan will not come on during this test if the unit is cold and the “Blower Switch” is open. High Limit Switch Before attempting to troubleshoot the High Limit Switch, be sure to verify that the #2 Rotation Motor switch is closed and is functioning correctly. If the Orange Wires connected to this switch are not closed through the switch will cause a #4 LED Alarm as well.
In an effort not to duplicate much of the information from the previous sections please refer to the following Trouble Shooting Flow Charts: Rotation Motor Switch – Adjustment (Switch #1) – please see page 13 Rotation Motor Sensor – Adjustment (Switch #2) – please see page 14 Rotation Motor – Mechanical How to reverse the Rotation Motor – Please see Figure 16 on page 14 Rotation Motor Switch – Electrical (Switch #1) – please see page 15 Rotation Motor Sensor – Electrical (Switch #2) – please see page 15 Re
Lincoln SCR Data Table Based on a Cycle Time of 7.5 seconds. Cycle time equals the ON time & OFF Time combined. Heat Level Selection Auger ON (Seconds) Start-Up Cycle Combustion Fan Voltage +/- 10% Convection Fan Voltage +/- 10% Pellets (Lbs./Hour) +/- 10% 3 min ON 6 Min OFF 9 Min Level 1 Line Volts OFF NA 1 2.5 90 Volts 90 Volts 1.5 Lbs. 2 3.0 100 Volts 100 Volts 2.6 Lbs. 3 3.5 110 volts 110 Volts 3.7 Lbs 4 4.0 116 volts 116 Volts 4.8 Lbs. 5 4.5 120 volts 120 Volts 5.
Wiring Schematic The Electrical Rating of this Stove is: 120 Volt, 60 Hz, 3 AMP. The minimum recommended circuit is 15 Amp. A dedicated circuit for the Stove is recommended. CAUTION: The electrical components of the Stove are not owner serviceable. Call your dealer for proper diagnosis of electrical problems and service to those components.
Lincoln SCR Parts Layout Page 33 - 33 -
Lincoln SCR Parts Layout - Continued Page 34 - 34 -
Part Numbers / Description # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18a 18b 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 PART NUMBER 80P54031 80P53770 80P53725 80P30697 80P20183 80P30519 80P30608 80P53945 80P53992 80P53977 80P52628 80P65021 80P20038 80P20168 80P54000 80P53933 80P30268 80P30709 80P30707 80P53979 80P30594 80P30492 80P30162 80P53931 80P30590 80P54056 80P54047 80P30493 80P53958 80P30506 80P52567 80P30593 80P30577 80P30561 DESCRIPTION HOPPERLID WELDMENT HOT AIR BOX BAY DOOR BLACK - COMPLET
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 80P52074 80P20027 80P20035 80P20034 80P20035 80P53724 80P53773 80P53723 80P20024 80P30248 80P52796 80P53677 80P52232 80P52887 80P20248 80P53990 80P20278 80P30248 80P53871 80P30501 80P30483 80P50858 80P53943 80P53666 80P20245 80P52957 80P20248 80P20278 80P30191 80P20245 80P50858 80P30045 80P30431 80P52630 80P30612 BAY DOOR GLASS CLIP - TOP 5/8” WINDOW GASKET BAY SIDE GLASS BAY FRONT GLASS BAY SIDE GLASS BA
TechNet Manufactured and Distributed by Even Temp, Inc.
Ashby Insert Series The Ashby Series of Inserts uses 2 of the Burn Systems we currently use in our Stove Line. The Ashby-P uses the Versa Grate System. The Ashby-MF uses the Multi-Fuel System Control Board This version of the board has two Programs that work for the Versa Grate System and two Programs that work with the Multi-Fuel System. Before lighting the Insert for the first time, be sure to choose the correct program.
This Ashby was designed to be able to switch between the 2 burn systems we offer in our regular stove line. Following is a description showing how to switch out the burn pots.
Figure 2 Once the parts have been removed from the front of the insert, remove the parts shown in figure 2 in the following order: 1 – Versa Grate Assembly 2 – Shaft/Cage Weldment 3 – Rear Bushing For installing these Components and adjusting the Front Bushing assembly see Figures 6 & 7 and the information on page 7 Page 4
Installing the Multi-Fuel System Start by covering the hole on the back side of the unit where the Rear Bushing Assembly was removed. Attach the Cover plate using the 2 screws that were removed with the Rear Bushing Assembly. Figure 3 Follow the order listed below for in stalling the components. 1 – Insert the Slide-Out Bottom 2 – Place the Coal Rake in the unit, with the Rod sticking out the front of the unit. Note the orientation of the bend. The bend is facing down.
Figure 5 5 – Place the Coal Rake Rod through the hole in the Coal Rake Rod Plate and screw to the front of unit with the screws that held the Igniter assembly in place. 6 – Screw the Multi-Fuel Pot in place. 7 – Push the Coal Rake in before inserting the two #8 x 1¼” Coal Rake Retainer screws. 8 – Close the Ash Pan Door and install the Lower Panel. Installing the Versa Grate System Please refer to Figures 1 and 2 on pages 3 and 4.
Figure 6 6 – Place the Versa Grate Pot in the stove and check the gap between the Shaker Plate and the bottom of the Grate. The gap should be about 1/16“. A gap that is too large allows the Shaker Plate to rock back and forth on the Rod like Teeter Totter and that can create a gap large enough to allow pellets to drop through. If the Bottom of the Grate actually rests on the Shaker Plate will create noise as the Shaker Plate slides back and forth.
The Ashby has several features that allow the unit to be adapted to allow a better fit under certain conditions. Adjustable Hopper Instructions Step 1 – Remove the 15 screws that hold the Hopper Top in place. Cut through the aluminum taped that seals the hopper and remove the Hopper Top. Step 2 – The top can be lowered 2”. To utilize the full 2” adjustment the front corners must be removed to lower the top. Break off tabs if needed.
Removable Base Extension and Bolt-On Ashpan Figure 10 These removable parts show the various different ways to set up the Ashby Insert. The Multi-Fuel Insert is limited by the fact that the Bolt-On Ashpan is an integral part of that Burn System and cannot be removed. The unit may fit better in some Zero Clearance manufactured Fireplaces by removing the Bolt-On Base Extension. An Ashby without the Bolt-On Ashpan must have the Bolt-On Cover Plate and gasket installed close the opening to the Bolt-On Ashpan.
Figure 11 Figure 12 Slide Door must be closed during Normal Operation Page 10
Dual High-Limit Switches The Ashby has a new Convection Blower System. It uses dual Blowers, each with their own motor. Due to this design we have implemented dual High Limit Sensors. A switch is located above each Blower. This allows the control board to react quickly if one or the other blower fails. The switches have been changed to 200 Degree and they no longer have to be manually reset. Changing to a switch that will automatically reset was due to the location of the switches.
Zero Clearance Cabinet The Ashby Insert is approved for installation into the St. Croix Zero Clearance Cabinet. The Cabinet ships knocked down to make it easier to ship. Put together it is a simple metal cabinet that gets framed in The Ashby can be installed as a Rear Vent System or as a Top Vent System if the situation dictates one or the other. Figure 14 How to build the Cabinet Step 1 Note the orientation of the Vent hole and the Air Intake Hole on the back panels.
Step 2 Note how the side panels line up with the back section. Screw both sides to the back section Figure 16 Step 3 Note the location of the Top Vent Hole and the Rear Vent Hole. They must line up with each other as shown in figure 17. Complete the unit by lining up the Top and Bottom sections and screwing the parts together.
Zero Clearance Install Example Figure 18 There are many variations that are possible. The unit may be raised up if desired. A larger block may be used if needed, however the size shown is the minimum allowed. If a larger block is used, remember to increase the framing dimensions accordingly.
Troubleshooting Flow Charts for the Ashby The High Limit Flow Chart and Convection Fan Flow Chart are slightly different for the Ashby, please see the following charts.
Auger Motor–Electrical – Make sure the Hopperlid switch is functioning correctly) Remember: Checking for Voltage either at the Harness or directly at the Pin-Out of the control board can only be done when the Auger should be running. The auger runs for 2 minutes during the Start-Up Cycle or runs at a #1 level 5 minutes after the stove is first turned on. Hot-wiring the fan direct with a power cord is also a good way to check the Auger motor.
In an effort not to duplicate much of the information from the previous sections please refer to the following Trouble Shooting Flow Charts: Digital Control Board – No Power Please refer to page 54 for the Troubleshooting Flow Chart for the Control Board. Digital Control Board – Fan Self Test Please refer to page 54 for the Troubleshooting Flow Chart for the Control Board. Hopperlid Switch (not referenced in the old Service Manual.
Ashby Wiring Schematic The Electrical Rating of this Multi-Fuel Insert is: 120 Volt, 60 Hz, 4 Amp with the igniter running and approximately 2 Amp with out the igniter running. The minimum recommended circuit is 15 Amp. A dedicated circuit for the Insert is recommended.
Ashby - Parts specific to the Versa Grate System only # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PART NUMBER 80P20296-R 80P52372 -R 80P52376-R 80P53695-R 80P52953-R 80P50560-R 80P52955-R 80P53914-R 80P52727-R 80P50553-R 98355A070-R 80P52038-R 80P53884-R 80P52954-R DESCRIPTION VERSA GRATE MOTOR VERSA GRATE COLLAR W/ SETSCREWS CAM CONNECTOR ROD SHAFT/CAGE WELDMENT VERSA GRATE BRACKET ASSEMBLY CAM REAR BUSHING ASSEMBLY IGNITER TUBE WELDMENT IGNITER SPACER COTTER PIN SHAKER PLATE GRATE WELDMENT FRONT BUSHING ASSEMBL
Ashby - Parts common to both Burn Systems # 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 PART NUMBER 80P52629-R 80P30521-R 80P30455-R 80P20038-R 80P30649-R 80P53909-R 80P53911-R 80P20248-R 80P20278-R 80P30424-R 80P50858-R 80P53666-R 80P30215-R 80P52957-R 80P20245-R 80P30459-R 80P52630-R 80P30368-R 80P52628-R 80P30457-R 80P30456-R 80P53957 80P30523 80P30550 80P30553 DESCRIPTION MANUAL RESET HIGH LIMIT SWITCH COMBUSTION FAN LEFT CONVECTION FAN PROOF OF FIRE SWITCH COMBUSTION F
Ashby - Parts specific to the Multi-Fuel System only 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 PART NUMBER DESCRIPTION 80P30412 80P30354 80P30561 80P30398 80P30410 80P30598 80P53901 80P30462 80P53649 80P53886 80P30409 80P20175 80P53885 80P53964 80P53900 80P53966 80P53890 80P53725 80P30463 80P53770 80P30599 80P30606 80P30362 80P30353 80P30429 80P20183 BOLT ON LEVELING BOX ASH DOOR HINGE BRACKET - RIGHT MAGNET SIDE ASH PAN COAL RAKE ROD PLATE STEEL BRICK PANEL, LEFT
Ashby Multi-Fuel Burn System Data Chart Based on a default Cycle Time of 11.5 seconds. Cycle time equals the ON time & OFF Time combined. The following Chart is in reference to burning Corn in Program 1. Heat Level Selection Auger ON (Seconds) Combustion Fan Voltage +/- 3 Volts Convection Fan Voltage +/- 3 Volts Corn Fuel (Lbs./Hour) +/- 10% Start-Up Cycle Off for the first 5 minutes 100 Volts OFF NA 1 1.5 90 Volts 90 Volts 1.7 Lbs. 2 2.0 98 Volts 98 Volts 2.25 Lbs. 3 2.
Ashby Versa Grate Burn System Data Chart Based on a default Cycle Time of 11.5 seconds. Cycle time equals the ON time & OFF Time combined. The following Chart is in reference to burning Pellets in Program 3. Heat Level Selection Auger ON (Seconds) Combustion Fan Voltage +/- 10% Convection Fan Voltage +/- 10% Pellets Fuel (Lbs./Hour) +/- 10% Start-Up Cycle Off for the first 5 minutes 100 Volts OFF NA 1 1.5 90 Volts 90 Volts 1.25 Lbs. 2 2.5 98 Volts 98 Volts 2.00 Lbs. 3 3.
