A-Maize-Ing Heat NRP620-10, Owner'S Manual

Page 1: ...ROL MUST BE IN GOOD CONDITION AND CLEANED REGULARLY TO REMOVE ACCUMULATED CREOSOTE AND ASH CLEAN AT THE END OF THE HEATING SEASON TO MINIMIZE CORROSION DURING SUMMER MONTHS DANGER RISK OF EXPLOSION DO NOT BURN GARBAGE GASOLINE DRAIN OIL OR OTHER FLAMMABLE LIQUIDS DO NOT USE CHEMICALS OR FLUIDS TO START THE FIRE TURN THE POWER SWITCH TO OFF IN THE EVENT OF A RUN AWAY FIRE IF THE FIRE GOES OUT DUE T...

Page 2: ...DATE OF MFG SERIAL MODEL ...

Page 3: ...CONFORMS TO UL STD 391 CERTIFIED TO CSA STD B366 1 CAN CSA B415 1 10 ASTM E2515 2011 ...

Page 4: ...OWNER S MANUAL MODEL NRP620 10 FURNACE 899 South Prairie Lane P O Box 500 Marshfield MO 65706 PHONE 417 859 6067 FAX 417 859 2109 www naturesrenewable com ...

Page 5: ...NRP620 10 OMEPAPV20161017 ENGLISH REV 1 Page 2 of 42 This page intentionally left blank for your notes ...

Page 6: ...14 Listed Chimney 14 Masonry Chimney 14 Creosote Formation and Need for Removal 14 Barometric Draft Control 15 Power Vent Option 16 FURNACE UNPACKING AND SET UP 17 Model 14 Storage Bin Assembly 18 Model 14 Bin Vibrator Mounting Instructions 22 THERMOSTAT WIRING 24 ELECTRICAL WIRING 25 FUEL REQUIREMENTS 26 BURNER LIGHTING 27 OPERATION 28 Clinker Buildup 28 Summary of Settings Operation 29 Draft 29 ...

Page 7: ...ce specifically designed for commercial and residential applications Proper care of this appliance should result in many years of service and comfort An annual checkup by a competent service person is recommended DO NOT OVERFIRE THIS HEATER Attempts to achieve heat output rates that exceed heater design specifications can result in permanent damage to the heater This wood heater has a manufacturer...

Page 8: ...age emissions rate of 0 197 grams mega joule of total output 0 458 lbs MMBtu Output Summary of EPA test results CAT I II III IV Load Capacity 35 of max 35 53 of max 53 76 of max Max capacity Tgt Load Btu hr 42 000 52 800 78 000 120 000 Act Load Btu hr 37 722 52 227 75 861 112 434 Test Duration Hours 6 6 6 4 33 WoodWt Lb 53 5 70 7 101 7 115 2 Qin Btu 430 548 568 967 818 444 927 087 Qout Btu 226 332...

Page 9: ... this product unless the instructions within this manual are carefully read and understood Failure to operate the unit in the prescribed manner will void the warranty Installation must be performed by a qualified installer according to federal state provincial and local codes ...

Page 10: ...nect all power to the unit before performing routine maintenance or service 10 Establish a regular service and maintenance schedule for efficiency and safe operation 11 Have a qualified service person perform tasks with which you are not familiar 12 CAUTION Hot Surfaces Children and adults should be alerted to the potential high surface temperatures of the burner door Keep children away Do not tou...

Page 11: ...moval doors open Do not store fuel or other combustible material within marked installation clearances Inspect and clean flues and chimney regularly 20 Refer to markings on the appliance for additional information Smoke and Carbon Monoxide Emissions and Monitors This appliance generates smoke and carbon monoxide CO as natural bi products during the normal combustion of the listed fuel It is theref...

Page 12: ...e to have warmer consider installing the unit in the basement since the radiant heat will provide additional warmth to the space where it is located Minimum clearances for the A Maize Ing Heat furnace is 2 from top of the plenum to the ceiling 9 on either side 18 from the back of the furnace flue to the wall and 28 from the back of the unit to the back wall These clearances must be maintained for ...

Page 13: ...entral furnace overheating and causing the central furnace to operate other than as intended When installing the furnace as a supplementary add on furnace install the unit in a parallel air flow configuration with the central furnace and install back draft dampers BDD to prevent feedback from one furnace to the other as illustrated below COLD AIR RETURN COLD AIR RETURN WARM AIR SUPPLY WARM AIR SUP...

Page 14: ...Ing Heat furnace can be installed on a combustible floor if a non combustible material is placed directly under the ash removal door and chimney connector The mat is to extend at least 16 in front of and 8 to each side of the ash removal drawer and 2 either side of the chimney connector Recommended distances for ease of use and serviceability Top 32 Opposite side from bin 24 Front 36 Rear most sur...

Page 15: ...and the safety of others Do not install the unit in a space that violates the distances listed Minimum distances from a combustible surface Clearances to combustible construction 28 Unit to back wall 9 Unit to sidewall 18 Flue connector to back wall 2 Plenum to ceiling Minimum Clearances 18 12 30 9 28 ...

Page 16: ... any chimney flue servicing any other heating appliance as recommended by the National Fire Prevention Association All chimney connections must meet the approval of the local building inspector and fire marshal and conform to all local state provincial and national codes The furnace is intended for connection to chimneys for residential and building heating appliances in compliance with the Standa...

Page 17: ...onry chimney Material of the chimney connector should be made with a minimum 24 gauge black or blued steel An existing lined masonry chimney must be clean and inspected All connections to the chimney must comply with NFPA Standard 211 and all applicable building codes Consult a local building inspector and or a qualified furnace installer to be sure the chimney and connections are safe and complia...

Page 18: ...torage bin causing a possible hazard The supplied barometric regulator should be installed in the flue as per the enclosed instructions to properly regulate 0 02 0 04 inches water column draft The counter weight setting on the barometric regulator regulates this setting If this setting is exceeded it could cause a solid fuel fire to burn out of control The chimney draft measured at the barometric ...

Page 19: ...r according to federal state provincial and local codes The components involved in the Power Vent installation are Field Controls SWG 5AF Power Vent Field Controls DIP 1 pressure switch Field Controls WMO 1 blocked vent switch Barometric Draft Control The Power Vent Option comes with the SWG 5AF DIP 1 and WMO 1 The Barometric Draft Control is included with the furnace Installation and calibration ...

Page 20: ... wire nuts x 3 Owner s Manual First Light Notice I HOPPER HARDWARE BAG Model 14 hopper only INCLUDES 5 16 X hex head cap screws x 16 5 16 hex nuts x 16 10 X 3 4 self tapping screws x 2 J BURNPOT AUGER already installed K BIN AUGER already installed on Wedge 200 L FILTER already installed M POKER N HOSE CLAMP secured to flex tube on Model 14 Bin O VIBRATOR not applicable with the Wedge 200 already ...

Page 21: ... 1 Page 18 of 42 Model 14 Storage Bin Assembly 1 After removal of the shipping container assemble the metal hopper stand a Position a short bin support on the inside of one of the hopper legs and bolt the support to the leg Illustration 1 ...

Page 22: ... on the inside of the other portion of the leg so that the long support will be above as viewed with the stand right side up the short bin support creating one corner of the bin support c Repeat steps a and b above with the remaining sides and a leg to create the opposite corner Illustration 2 Illustration 3 ...

Page 23: ...ith the legs pointing up so that the short bin supports will be below as viewed with the stand right side up the long supports e Bolt the remaining two legs to the opposite corners f Turn the bin support over and position storage bin on storage bin base at desired angle for installation Illustration 4 ...

Page 24: ...he flex conduit from the VIB1A01A Vibrator Assembly to the BUF1A02A Model 14 Bin Auger box through the open knockout using the conduit locknut 5 Fasten flex conduit extending from the BUF1A02A Model 14 Bin Auger box to the BAA1A01A Burner Auger Assembly box using the conduit lock nut 6 Secure the fuel delivery coupler between BUF1A02A Model 14 Bin Auger tube and BAA1A01A Burner Auger Assembly inle...

Page 25: ...y 5 Remove the two NI 2012 8 32 Hex Lock Nuts and NI 1062 3 16 X 1 1 2 Fender Washers from the bottom of the VIB1A01A Vibrator Assembly 6 Orient the VIB1A01A Vibrator Assembly on the outside of the PBH1A01A Model 14 Bin so the flex conduit is closest to the fuel spout 7 Mount the VIB1A01A Vibrator Assembly to the PBH1A01A Model 14 Bin by passing the NI 1045 11 32 X 2 1 2 Machine Bolts through the ...

Page 26: ...NRP620 10 OMEPAPV20161017 ENGLISH REV 1 Page 23 of 42 1 7 8 1 3 5 5 3 4 HOPPER SPOUT Illustration 5 ...

Page 27: ...control box Note There is also a C terminal on the relay Positively identify these terminals before connecting the thermostat wire Connecting a thermostat wire to the C terminal will permanently damage the relay The location of the thermostat has an important effect on the operation of your furnace Be sure to follow the instructions included with your thermostat ...

Page 28: ...miliar with wiring and codes in general have a competent electrician do this job Make connections to the furnace junction box see below from a 120VAC 15 amp fused and grounded circuit that has been tested and confirmed to be wired correctly Connect Ground to the green ground lug in the furnace junction box Connect 120VAC neutral to the white power connection in the furnace junction box Connect 120...

Page 29: ...5 inches smaller shorter pellets will pack into the burn pot restricting combustion air flow resulting in less efficient combustion 3 Inorganic fines Less than or equal to 1 percent 4 Chlorides Less than or equal to 300 parts per million by weight 5 Ash content No more than 2 percent 6 Contains no demolition or construction waste 7 Trace metals Less than 100 mg kg and 8 None of the prohibited fuel...

Page 30: ...shing caused by the treatment used on the corn Never add fuel to the burn pot directly while a fire is establish This can cause the generation of excessive smoke and a potentially hazardous condition 1 Add wood pellets dry 15 or below moisture and clean USDA 3 or better corn or other approved biomass fuel to the holding bin see FUEL REQUIREMENTS on page 26 See IMPORTANT and CAUTION above 2 Turn on...

Page 31: ...red wire 3 Medium blue wire 2 and High black wire 1 All units are shipped from the factory on the High speed Blower speed may be changed by accessing the 4 x 4 electrical junction box on the side of the furnace Disconnect power before changing any electrical connections Change blower speeds by disconnecting the yellow wire from the current speed wire and reconnecting it to the desired speed wire D...

Page 32: ...y This opening should be adjusted during the high fire mode of operation to obtain an intense flame that consumes the fuel at the same rate it is augured in When using premium wood pellets start with the combustion air damper approximately 1 3 open For other types of fuel start with the damper approximately 1 2 open Maintain the fuel level in the burn pot between the row of holes halfway up the bu...

Page 33: ...The pilot Low Fire timer is preset at the factory at 12 minutes OFF green indicator and 2 minutes ON red indicator Further adjustment can be made with user experience The variable BTU timer relay controls the auger drive rate It comes set from the factory at 30 seconds ON red indicator and 30 seconds OFF green indicator Allow the furnace to run for 24 hours then evaluate if adjustment is necessary...

Page 34: ...fuels may require the use of another fuel source to provide enough heat to start combustion Initial lighting may require the use of kindling wood Additionally a gel based lighting fluid may be used Fire will not start Ash and clinkers in burn pot Clean out burn pot before trying to start furnace Fire goes out Chimney draft too high Adjust the barometric draft control as described on page 15 Tall o...

Page 35: ...stion Flue draft too low Furnace requires 0 02 to 0 04 inches of water column draft on low fire to support combustion Poor Combustion Combustion air flow too low The furnace requires 60 CFM of combustion air Increase the opening of the combustion air intake fan gate Install an outside air combustion intake Fuel does not feed smoothly into burn pot High friction in auger drive Pour a small amount o...

Page 36: ...red in some instances Consult with a heating contractor to check the flue and chimney operation Smoke is emitted during the low fire cycle There is not enough draft Check the barometric damper for proper adjustment to provide sufficient draft during the low fire cycle Check the flue and chimney installation Improper placement of the stack can cause backflow down the chimney Check the type of vent ...

Page 37: ...ulation system Weekly 1 Check contents of ash drawer and empty as needed Check the ash drawer more frequently during periods of high use Ashes should be placed in a metal container with a tight fitting lid The closed container of ashes should be placed on a non combustible floor or on the ground well away from combustible materials pending final disposal If the ashes are disposed of by burial in s...

Page 38: ...re when the furnace is not in use It is important to thoroughly vacuum the inside of the furnace burn chamber and vent pipe at the end of the heating season A light oil WD 40 or equivalent should be applied to the inside of the burn chamber to inhibit rust 3 Cap the furnace exhaust vent pipe to reduce the amount of moisture from entering the burn chamber 4 Clean and inspect all blower and auger mo...

Page 39: ...FIED FOR ACCEPTABLE OPERATION BEFORE AND AFTER INSTALLATION OF THE ADD ON APPLIANCE BY A GAS FITTER WHO IS RECOGNIZED BY THE REGULATORY AUTHORITY 9 DO NOT CONNECT TO ANY GAS FURNACE THAT IS NOT EQUIPPED WITH AN AIR CIRCULATION BLOWER OR TO A CHIMNEY OR VENT SERVING A GAS FURNACE OR GAS APPLIANCE 10 THE ADD ON UNIT SHOULD ONLY BE INSTALLED ON A FURNACE DUCT SYSTEM AND CHIMNEY THAT ARE IN GOOD OPERA...

Page 40: ...L Limit Line Fan Low Limit W HT BL Y BL W HT BL W R O B W W BL BL W W BL BL O W BL R Y HT BL R C Y G W R BL B 120 VAC 15 A 60 HZ BL BL Variable BTU Timer Fan Limit Control Blower Speeds BL High B Med R Low Legend BL Black HT BL High Temp Black BR Brown W White R Red O Orange Y Yellow B Blue Model 620 Schematic Diagram 05 FEB 2016 NRP620 20160205 SD Rev 1 W NEUTRAL HO T G RO U ND G RO U ND R O B Y ...

Page 41: ...n Low Limit W HT BL Y BL W HT BL W R O B W W BL BL W W BL BL O W BL R Y HT BL R C Y G W R BL B 120 VAC 15 A 60 HZ BL BL Variable BTU Timer Fan Limit Control Blower Speeds BL High B Med R Low Legend BL Black HT BL High Temp Black BR Brown W White R Red O Orange Y Yellow B Blue Model 620 Schematic Diagram w Power Vent 05 FEB 2016 NRP620PV 20160205 SD Rev 1 W NEUTRAL HO T G RO U ND G RO U ND R O B Y ...

Page 42: ...AUGER KIT INCLUDES THE BURNER AUGER AUGER BUSHING LOCK COLLAR AND 2 10 x 1 3 4 SHEET METAL SCREWS MBH1A01A WEDGE 200 BIN WEDGE 200 BIN ONLY MBC1A01A WEDGE 200 LID WEDGE 200 BIN LID ONLY SAA1A02A WEDGE 200 BIN AUGER ASSY WEDGE 200 BIN AUGER ASSEMBLY MBB1A01A WEDGE 200 STAND WEDGE 200 BIN MOUNTING HARDWARE BNA1A02A MODEL 14 AUGER ASSEMBLY INCLUDES THE MOTOR AND AUGER BAM1A01A AUGER MOTOR BIN HOPPER ...

Page 43: ...g and return of defective items This warranty does not take effect until the warranty registration card is sent in If the card is not filled out and returned to NATURE S RENEWABLE PRODUCTS within 30 days of date of purchase warranty claims on your unit may be denied All warranty claims must be reported to the nearest Nature s Renewable Products A MAIZE ING HEAT furnace dealer Dealer Name Dealer Ad...

Page 44: ...NRP620 10 OMEPAPV20161017 ENGLISH REV 1 Page 41 of 42 This page intentionally left blank for your notes ...

Page 45: ...NRP620 10 OMEPAPV20161017 ENGLISH REV 1 Page 42 of 42 899 South Prairie Lane P O Box 500 Marshfield MO 65706 PHONE 417 859 6067 FAX 417 859 2109 www naturesrenewable com ...

Page 46: ...OWNER S MANUAL MODEL NRP620 9 FURNACE 899 South Prairie Lane P O Box 500 Marshfield MO 65706 PHONE 417 859 6067 FAX 417 859 2109 www naturesrenewable com ...

Page 47: ...NRP620 9 OMEPAPV20161017 ENGLISH REV 1 Page 2 of 42 This page intentionally left blank for your notes ...

Page 48: ...mney 14 Masonry Chimney 14 Creosote Formation and Need for Removal 14 Barometric Draft Control 15 Power Vent Option 16 FURNACE UNPACKING AND SET UP 17 Model 14 Storage Bin Assembly 18 Model 14 Bin Vibrator Mounting Instructions 22 THERMOSTAT WIRING 24 ELECTRICAL WIRING 25 FUEL REQUIREMENTS 26 BURNER LIGHTING 27 OPERATION 28 Clinker Buildup 28 Summary of Settings Operation 29 Draft 29 Timers 29 Hig...

Page 49: ...ce specifically designed for commercial and residential applications Proper care of this appliance should result in many years of service and comfort An annual checkup by a competent service person is recommended DO NOT OVERFIRE THIS HEATER Attempts to achieve heat output rates that exceed heater design specifications can result in permanent damage to the heater This wood heater has a manufacturer...

Page 50: ...ge emissions rate of 0 197 grams mega joule of total output 0 458 lbs MMBtu Output Summary of EPA test results CAT I II III IV Load Capacity 35 of max 35 53 of max 53 76 of max Max capacity Tgt Load Btu hr 42 000 52 800 78 000 120 000 Act Load Btu hr 37 722 52 227 75 861 112 434 Test Duration Hours 6 6 6 4 33 WoodWt Lb 53 5 70 7 101 7 115 2 Qin Btu 430 548 568 967 818 444 927 087 Qout Btu 226 332 ...

Page 51: ...this product unless the instructions within this manual are carefully read and understood Failure to operate the unit in the prescribed manner will void the warranty Installation must be performed by a qualified installer according to federal state provincial and local codes ...

Page 52: ...nect all power to the unit before performing routine maintenance or service 10 Establish a regular service and maintenance schedule for efficiency and safe operation 11 Have a qualified service person perform tasks with which you are not familiar 12 CAUTION Hot Surfaces Children and adults should be alerted to the potential high surface temperatures of the burner door Keep children away Do not tou...

Page 53: ...oval doors open Do not store fuel or other combustible material within marked installation clearances Inspect and clean flues and chimney regularly 20 Refer to markings on the appliance for additional information Smoke and Carbon Monoxide Emissions and Monitors This appliance generates smoke and carbon monoxide CO as natural bi products during the normal combustion of the listed fuel It is therefo...

Page 54: ...e to have warmer consider installing the unit in the basement since the radiant heat will provide additional warmth to the space where it is located Minimum clearances for the A Maize Ing Heat furnace is 2 from top of the plenum to the ceiling 9 on either side 18 from the back of the furnace flue to the wall and 28 from the back of the unit to the back wall These clearances must be maintained for ...

Page 55: ...ntral furnace overheating and causing the central furnace to operate other than as intended When installing the furnace as a supplementary add on furnace install the unit in a parallel air flow configuration with the central furnace and install back draft dampers BDD to prevent feedback from one furnace to the other as illustrated below COLD AIR RETURN COLD AIR RETURN WARM AIR SUPPLY WARM AIR SUPP...

Page 56: ...Ing Heat furnace can be installed on a combustible floor if a non combustible material is placed directly under the ash removal door and chimney connector The mat is to extend at least 16 in front of and 8 to each side of the ash removal drawer and 2 either side of the chimney connector Recommended distances for ease of use and serviceability Top 32 Opposite side from bin 24 Front 36 Rear most sur...

Page 57: ...nd the safety of others Do not install the unit in a space that violates the distances listed Minimum distances from a combustible surface Clearances to combustible construction 28 Unit to back wall 9 Unit to sidewall 18 Flue connector to back wall 2 Plenum to ceiling 18 12 30 9 28 Minimum Clearances ...

Page 58: ... any chimney flue servicing any other heating appliance as recommended by the National Fire Prevention Association All chimney connections must meet the approval of the local building inspector and fire marshal and conform to all local state provincial and national codes The furnace is intended for connection to chimneys for residential and building heating appliances in compliance with the Standa...

Page 59: ... chimney Material of the chimney connector should be made with a minimum 24 gauge black or blued steel An existing lined masonry chimney must be clean and inspected All connections to the chimney must comply with NFPA Standard 211 and all applicable building codes Consult a local building inspector and or a qualified furnace installer to be sure the chimney and connections are safe and compliant F...

Page 60: ...torage bin causing a possible hazard The supplied barometric regulator should be installed in the flue as per the enclosed instructions to properly regulate 0 02 0 04 inches water column draft The counter weight setting on the barometric regulator regulates this setting If this setting is exceeded it could cause a solid fuel fire to burn out of control The chimney draft measured at the barometric ...

Page 61: ... according to federal state provincial and local codes The components involved in the Power Vent installation are Field Controls SWG 5AF Power Vent Field Controls DIP 1 pressure switch Field Controls WMO 1 blocked vent switch Barometric Draft Control The Power Vent Option comes with the SWG 5AF DIP 1 and WMO 1 The Barometric Draft Control is included with the furnace Installation and calibration o...

Page 62: ...dles x 4 orange wire nuts x 3 x self tapping screw x 3 connecting tube x 1 and owner s manual H HOPPER HARDWARE BAG Model 14 hopper only INCLUDES 5 16 X hex head cap screws x 16 and 5 16 hex nuts x 16 I BURNPOT AUGER already installed J BIN AUGER already installed on Wedge 200 K FILTER already installed L POKER M HOSE CLAMP already installed on Wedge 200 N VIBRATOR not applicable with the Wedge 20...

Page 63: ... 1 Page 18 of 42 Model 14 Storage Bin Assembly 1 After removal of the shipping container assemble the metal hopper stand a Position a short bin support on the inside of one of the hopper legs and bolt the support to the leg Illustration 1 ...

Page 64: ... on the inside of the other portion of the leg so that the long support will be above as viewed with the stand right side up the short bin support creating one corner of the bin support c Repeat steps a and b above with the remaining sides and a leg to create the opposite corner Illustration 2 Illustration 3 ...

Page 65: ...ith the legs pointing up so that the short bin supports will be below as viewed with the stand right side up the long supports e Bolt the remaining two legs to the opposite corners f Turn the bin support over and position storage bin on storage bin base at desired angle for installation Illustration 4 ...

Page 66: ... Bin Auger box through the open knockout using the conduit locknut 5 Fasten flex conduit extending from the BUF1A02A Model 14 Bin Auger box to the BAA1A01A Burner Auger Assembly box using the conduit lock nut 6 Secure the fuel delivery coupler between BUF1A02A Model 14 Bin Auger tube and BAA1A01A Burner Auger Assembly inlet 7 In the BAA1A01A Burner Auger Assembly a Connect one black bin auger moto...

Page 67: ... 5 Remove the two NI 2012 8 32 Hex Lock Nuts and NI 1062 3 16 X 1 1 2 Fender Washers from the bottom of the VIB1A01A Vibrator Assembly 6 Orient the VIB1A01A Vibrator Assembly on the outside of the PBH1A01A Model 14 Bin so the flex conduit is closest to the fuel spout 7 Mount the VIB1A01A Vibrator Assembly to the PBH1A01A Model 14 Bin by passing the NI 1045 11 32 X 2 1 2 Machine Bolts through the h...

Page 68: ...NRP620 9 OMEPAPV20161017 ENGLISH REV 1 Page 23 of 42 1 7 8 1 3 5 5 3 4 HOPPER SPOUT Illustration 5 ...

Page 69: ...ontrol box Note There is also a C terminal on the relay Positively identify these terminals before connecting the thermostat wire Connecting a thermostat wire to the C terminal will permanently damage the relay The location of the thermostat has an important effect on the operation of your furnace Be sure to follow the instructions included with your thermostat ...

Page 70: ...miliar with wiring and codes in general have a competent electrician do this job Make connections to the furnace junction box see below from a 120VAC 15 amp fused and grounded circuit that has been tested and confirmed to be wired correctly Connect Ground to the green ground lug in the furnace junction box Connect 120VAC neutral to the white power connection in the furnace junction box Connect 120...

Page 71: ... inches smaller shorter pellets will pack into the burn pot restricting combustion air flow resulting in less efficient combustion 3 Inorganic fines Less than or equal to 1 percent 4 Chlorides Less than or equal to 300 parts per million by weight 5 Ash content No more than 2 percent 6 Contains no demolition or construction waste 7 Trace metals Less than 100 mg kg and 8 None of the prohibited fuels...

Page 72: ...ishing caused by the treatment used on the corn Never add fuel to the burn pot directly while a fire is establish This can cause the generation of excessive smoke and a potentially hazardous condition 1 Add wood pellets dry 15 or below moisture clean USDA 3 or better corn or other approved biomass fuel to the holding bin see FUEL REQUIREMENTS on page 26 See IMPORTANT and CAUTION above 2 Turn on th...

Page 73: ... wire 3 Medium blue wire 2 and High black wire 1 All units are shipped from the factory on the High speed Blower speed may be changed by accessing the 4 in x 4 in electrical junction box on the side of the furnace Disconnect power before changing any electrical connections Change blower speeds by disconnecting the yellow wire from the current speed wire and reconnecting it to the desired speed wir...

Page 74: ...y This opening should be adjusted during the high fire mode of operation to obtain an intense flame that consumes the fuel at the same rate it is augured in When using premium wood pellets start with the combustion air damper approximately 1 3 open For other types of fuel start with the damper approximately 1 2 open Maintain the fuel level in the burn pot between the row of holes halfway up the bu...

Page 75: ...The pilot Low Fire timer is preset at the factory at 12 minutes OFF green indicator and 2 minutes ON red indicator Further adjustment can be made with user experience The variable BTU timer relay controls the auger drive rate It comes set from the factory at 30 seconds ON red indicator and 30 seconds OFF green indicator Allow the furnace to run for 24 hours then evaluate if adjustment is necessary...

Page 76: ...uels may require the use of another fuel source to provide enough heat to start combustion Initial lighting may require the use of kindling wood Additionally a gel based lighting fluid may be used Fire will not start Ash and clinkers in burn pot Clean out burn pot before trying to start furnace Fire goes out Chimney draft too high Adjust the barometric draft control as described on page 15 Tall or...

Page 77: ...stion Flue draft too low Furnace requires 0 02 to 0 04 inches of water column draft on low fire to support combustion Poor Combustion Combustion air flow too low The furnace requires 60 CFM of combustion air Increase the opening of the combustion air intake fan gate Install an outside air combustion intake Fuel does not feed smoothly into burn pot High friction in auger drive Pour a small amount o...

Page 78: ...ed in some instances Consult with a heating contractor to check the flue and chimney operation Smoke is emitted during the low fire cycle There is not enough draft Check the barometric damper for proper adjustment to provide sufficient draft during the low fire cycle Check the flue and chimney installation Improper placement of the stack can cause backflow down the chimney Check the type of vent p...

Page 79: ...lation system Weekly 1 Check contents of ash drawer and empty as needed Check the ash drawer more frequently during periods of high use Ashes should be placed in a metal container with a tight fitting lid The closed container of ashes should be placed on a non combustible floor or on the ground well away from combustible materials pending final disposal If the ashes are disposed of by burial in so...

Page 80: ...e when the furnace is not in use It is important to thoroughly vacuum the inside of the furnace burn chamber and vent pipe at the end of the heating season A light oil WD 40 or equivalent should be applied to the inside of the burn chamber to inhibit rust 3 Cap the furnace exhaust vent pipe to reduce the amount of moisture from entering the burn chamber 4 Clean and inspect all blower and auger mot...

Page 81: ...IED FOR ACCEPTABLE OPERATION BEFORE AND AFTER INSTALLATION OF THE ADD ON APPLIANCE BY A GAS FITTER WHO IS RECOGNIZED BY THE REGULATORY AUTHORITY 9 DO NOT CONNECT TO ANY GAS FURNACE THAT IS NOT EQUIPPED WITH AN AIR CIRCULATION BLOWER OR TO A CHIMNEY OR VENT SERVING A GAS FURNACE OR GAS APPLIANCE 10 THE ADD ON UNIT SHOULD ONLY BE INSTALLED ON A FURNACE DUCT SYSTEM AND CHIMNEY THAT ARE IN GOOD OPERAT...

Page 82: ...L Limit Line Fan Low Limit W HT BL Y BL W HT BL W R O B W W BL BL W W BL BL O W BL R Y HT BL R C Y G W R BL B 120 VAC 15 A 60 HZ BL BL Variable BTU Timer Fan Limit Control Blower Speeds BL High B Med R Low Legend BL Black HT BL High Temp Black BR Brown W White R Red O Orange Y Yellow B Blue Model 620 Schematic Diagram 05 FEB 2016 NRP620 20160205 SD Rev 1 W NEUTRAL HO T G RO U ND G RO U ND R O B Y ...

Page 83: ... Low Limit W HT BL Y BL W HT BL W R O B W W BL BL W W BL BL O W BL R Y HT BL R C Y G W R BL B 120 VAC 15 A 60 HZ BL BL Variable BTU Timer Fan Limit Control Blower Speeds BL High B Med R Low Legend BL Black HT BL High Temp Black BR Brown W White R Red O Orange Y Yellow B Blue Model 620 Schematic Diagram w Power Vent 05 FEB 2016 NRP620PV 20160205 SD Rev 1 W NEUTRAL HO T G RO U ND G RO U ND R O B Y O...

Page 84: ...UGER KIT INCLUDES THE BURNER AUGER AUGER BUSHING LOCK COLLAR AND 2 10 x 1 3 4 SHEET METAL SCREWS MBH1A01A WEDGE 200 BIN WEDGE 200 BIN ONLY MBC1A01A WEDGE 200 LID WEDGE 200 BIN LID ONLY SAA1A02A WEDGE 200 BIN AUGER ASSY WEDGE 200 BIN AUGER ASSEMBLY MBB1A01A WEDGE 200 STAND WEDGE 200 BIN MOUNTING HARDWARE BNA1A02A MODEL 14 AUGER ASSEMBLY INCLUDES THE MOTOR AND AUGER BAM1A01A AUGER MOTOR BIN HOPPER A...

Page 85: ... and return of defective items This warranty does not take effect until the warranty registration card is sent in If the card is not filled out and returned to NATURE S RENEWABLE PRODUCTS within 30 days of date of purchase warranty claims on your unit may be denied All warranty claims must be reported to the nearest Nature s Renewable Products A MAIZE ING HEAT furnace dealer Dealer Name Dealer Add...

Page 86: ...NRP620 9 OMEPAPV20161017 ENGLISH REV 1 Page 41 of 42 This page intentionally left blank for your notes ...

Page 87: ...NRP620 9 OMEPAPV20161017 ENGLISH REV 1 Page 42 of 42 899 South Prairie Lane P O Box 500 Marshfield MO 65706 PHONE 417 859 6067 FAX 417 859 2109 www naturesrenewable com ...