Manual - Hearth & Home Technologies
Contents
1. Merrimack Large Insert Automatic Setback Control The automatic setback air control is used when starting or reviving a fire and provides an increased flow of combustion air to the fire until the firebox is sufficiently heated This air supply automatically resets to the desired air setting taking the guesswork out of operating the stove Figure 9 shows the automatic setback control Move the primary air control lever all the way to the left Push the primary control about one more inch to the left to open the air shutter the lever will spring back automatically when released The shutter will remain open only if the stove is below its proper operating temperature Once open the primary air control lever may be adjusted to any desired position Once the stove heats up to its proper operating temperature you will here a clicking sound confirming the shutter has closed This returns the stove to the output setting of the primary air control This feature is primarily intended for reloading the stove when lower air settings low heat output are desired but it is also useful any time the firebox is too cool for proper combustion or when freshly added wood does not ignite readily For maximum efficiency and performance the Merrimack insert should always have visible flames in newly added wood either within the fuel pile or near the roof of the firebox Wood moisture piece size draft weather and firebox temperature will all ha2. 2534 645 mm gt h 171146 449 mm 23136 605 mm Merrimack Large Insert Installation SAFETY NOTICE IF YOUR MERRIMACK IS NOT PROPERLY INSTALLED A HOUSE FIRE MAY RE SULT TO REDUCE THE RISK OF FIRE FOLLOW THE INSTALLATION INSTRUCTIONS CONTACT LOCAL BUILDING ORFIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA Requirements for Existing Fireplaces The Merrimack Large Insert is listed for installation within a properly built masonry or heat circulating masonry type fireplace that is constructed in accordance with the require ments of recognized building codes A heat circulating masonry type fireplace must conform to building code standards for masonry fireplaces and must consist of a factory built metal firebox with air circulation pathways that are surrounded by masonry materials Air circulation pathways must not be blocked by the insert or surround panels The fireplace and chimney must be clean and structurally sound Have them inspected by a qualified professional chimney sweep a mason or your Vermont Castings Authorized Dealer before the Merrimack Large Insert is installed Any deterioration cracks loose mortar or loose bricks must be repaired Codes may permit removal of the damper in order to make a positive vent connection between the firebox and the chim ney However the fireplace should not be modified in any way without first checking wi
3. Replace glass only with Vermont Castings Group high temperature ceramic glass available from your Vermont Castings authorized dealer HOT GLASS WILL CAUSE BURNS DO NOT TOUCH GLASS UNTIL COOLED NEVER ALLOW CHILDREN TO TOUCH GLASS Removing and Replacing Door Glass Follow this procedure to replace glass e Open the door and loosen the four retaining clip screws that hold the glass to the door Swing the clips out of the way Tilt the glass away from the door frame and lift up Fig 14 Wear gloves and use caution when handling broken glass e Examine the gasket that seals the glass to the door frame If necessary replace this with gasket obtained from your local Vermont Castings authorized dealer Directions for replacing gaskets are given below e Check the channel at the bottom of the door frame and clear away debris if necessary e Carefully place the new glass in the door frame e Secure the clips being careful not to over tighten Be sure the glass is firmly seated against the gasket Close the door gently to confirm the clips have been properly positioned It is possible for the glass to be damaged if the clips have been installed incorrectly and the door is closed with force How to Replace Gaskets Your Merrimack Large Insert uses rope type fiberglass gaskets to make a tight seal between some parts With use particularl
4. VERMONT CASTINGS Merrimack Large Insert Homeowner s Installation and Operating Manual VFI GOGO OO YV V V Oi YV Y Y i O G PR Pi PP On PPP at eae va Ve a SAFETY NOTICE IF THIS APPLIANCE IS NOT PROPERLY INSTALLED OPERATED AND MAIN TAINED A HOUSE FIRE MAY RESULT TO REDUCE THE RISK OF FIRE FOLLOW THE INSTALLATION INSTRUCTIONS FAILURE TO ms cml FOLLOW INSTRUCTIONS MAY RESULT IN PROP ERTY DAMAGE BODILY INJURY OR EVEN DEATH CONTACT LOCAL BUILDING OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA rout D 3 Si ry ry 7 07a oreo e 000004 6 lee 2 25 22 For Use in North America NATIONAL We recommend that our woodburning FIREPLACE hearth products be installed and serviced by professionals who are certified in the U S Tested amp ist Loko Dik NFI by the National Fireplace Institute NFI as Listed By NFI Woodburning Specialists or who are Cc US certified in Canada by OMNI Test Laboratories inc Wood Energy Technical ERTIFIE ge 227 S 37 6 2 bos heal Training WETT The French language version of this manual is available online www vermontcastings com La version fran aise de ce manuel est disponible en ligne www vermontcastings com Do Not Discard This Manual Retain for Future Use 30004671 0515 Rev 9 Merrimack Large Insert Introduction Thank you for purchasing a Vermont Castings Merrimack Large Insert an eff
5. 3 End Right 30004622 4 End Left 30004623 5 Top 30004624 6 Front 30004625 7 Door Left Refer to Enamel Chart 8 Door Right Refer to Enamel Chart 9 Base Plate 30004628 10 Air Manifold 30004629 11 Door Access Refer to Enamel Chart 12 Cover Plate Top 30004631 13 Andiron 30004635 14 Ashlip Refer to Enamel Chart 15 Lattice Front Top 16 Lattice Front Bottom Refer to Enamel Chart Refer to Enamel Chart 30004671 Ref Description Part Number 17 Mantel Refer to Enamel Chart 18 Air Cover Plate 30004640 19 Collar Flue 30004317 20 Fan Kit Assy 30004669 20a Replacement Blower Only 30004412 20b Snapstat Wire Assy 30004406 20c Rheostat and Wire Assy 30004407 20d Power Cord 1601482 20e Snapstat 30005236 20f D Knob 1604419 21 Side Panel Left Refer to Enamel Chart 22 Side Panel Right Refer to Enamel Chart 23 Airplate 30004315 24 Pinion 30004320 25 Wheel 30004319 26 Shaft Wheel 30004318 17 Merrimack Large Insert Merrimack Large Insert continued Ref Description PartNumber Ref Description Part Number_ 29 Brick Back 30004641 cote Bracket Door Himge SOAL 30 Brick RightEnd 30004645 _55 _Glass Right IR coated 30004654 __ 31 Brick Left End 30004646 __ _36 _Glass Left IR coated 30004655 __ 92 Brick Bottom Law 30004642 Sh Glass Clip 30008957 33 Brick Bottom Sint 30004643 _58 _Gasket Fiberglass lowD6nd__1203589__ _34 Brick Bottom Upper Right 30004644 _ _59 Gasket Fibergl
6. Follow the instruc from the insert as possible tions provided with the kit Safety Tips 7 Roll the Firebox into Position At least two people will Ye be needed to move the firebox To ease installation lift Conveniently locate a Class A fire extinguisher to con the front of the stove slightly to put weight on the rear tend with small fires Be sure the fire extinguisher works wheels Position the firebox so the flue collar aligns and is clearly visible All occupants of the house should with the connector Use the leveling screws at the front know where it is and how it operates Have heavy stove gloves available near the insert Have special safety see and Saisie accessories e g Child Guard Screen available for use ae hers ta if small children will be in the home Screws In the event of a stove pipe or chimney fire e Evacuate the house immediately e Notify the fire department If the fire isn t too threatening closing down the insert tight damper primary air all doors will help to smoth er the fire e Inspect your insert stove pipe and chimney for any damage caused by the fire and correct any damage to the side nearest the power supply 8 Connect the Flue Collar From inside the stove reach up and pull the flue collar into place by lining up the two 1 4 studs in the stove top Care should be taken to not disturb the gasket which seals the collar to the top Tighten the two 1 4 nuts 8 300
7. 25 0 86 0 8 0 86 1 66 mineralboard mineralboard Stepd R R R total brick Step e Compare proposed system Rtotal of 1 66 to specified R of 1 79 Since proposed system Rtotal is less than required the system is not acceptable Definitions _ ft hr F Btu in _ RS a K anne lt 12 _ Btu ft r NCF 1 f2 hr CF Btu in k Optional Surround Packages Custom made surround panels may be made from any noncombustible material Vermont Castings Group offers a steel or cast iron sur round panel kit Installing the Merrimack Large Insert 1 Remove or Disable the Fireplace Damper If codes al low remove the damper Many dampers can be removed simply by removing a cotter pin and or a set screw If itis not permissible or possible to remove the damper secure the damper in the fully open position NOTE CANADIAN INSTALLATIONS In accordance with CAN CSA B365 M91 you must permanently secure the Fireplace Modification Tag to the rear of the fireplace cavity if you have modified the fireplace in any way to accommodate installation of a fireplace insert This tag is in the hardware bag included with your Insert 2 Fluecollar orientation The flue collar may be oriented in the vertical position or rotated 180 degrees on the top of the stove resulting in a 26 degree backward angle If possible determine beforehand which orientation will work best for your application 30004671 Me
8. can often be improved if it is relined to reduce its size and or insulated to keep it warmer 30004671 e A positive flue connection must be made between the Insert and the first masonry tile or prefabricated metal chimney section A positive flue connection consists of a plate that seals or replaces the fireplace damper and a section of chimney connector that passes through the plate into the chimney e The chimney connector must be a minimum equiv alent to a 6 152 mm diameter opening and must be 24 gauge or heavier stainless steel Chimney Connection systems are available from a variety of manufacturers Your Vermont Castings dealer can rec ommend a system that will best meet the requirements of your particular installation Sealing Requirements U S e The chimney must be sealed off from room air ei ther by a plate at the damper level or by sealing the fireplace opening e Unused openings to the flue must be sealed with ma sonry to the thickness of the chimney wall Openings sealed with pie plates or wallpaper are a hazard In the event of a chimney fire flames and smoke may be forced from the openings In Canada CAN CSA B365 M91 Section 5 e This fireplace insert must be installed with a continu ous chimney liner of 6 152 mm diameterextending from the fireplace insert to the top of the chimney The chimney liner must conform to the Class 3 requirements of CAN ULC S635 Standard for Lin ing Systems for Exi
9. framing Such hearths are considered combustible The hearth for the Merrimack insert must be constructed over a completely non combustible surface such as un painted concrete over earth This non combustible hearth must extend at least 16 406 mm in front of the doors as protection from heat radiated from the insert This means the non combustible hearth must extend 23 in front of the fireplace face opening in a typical installation In addition spark and ember protection is needed 8 203 mm to each side of the insert and in Canada 18 in front of the insert The approved construction of this protection is a minimum or 24 gauge galvanized sheet metal or equiv alent Figure 5 shows the details of hearth requirements J FP1095 United States Canada A 18 460mm 18 460mm B 8 203mm 8 203mm C 46 1181mm 46 1181 mm In all cases the hearth must be completely noncombustible in front of the insert to the dimensions shown and the hearth must also be 1 thick with k factor of 0 61 R 1 63 or equivalent In the US if the insert is elevated 21 2 64 mm or more no thermal or ember protection is necessary beyond 16 406 mm Fig 5 Unless your fireplace and hearth are constructed over a dirt floor or unpainted concrete over dirt you must use a floor protector that satisfies the above requirements How to Determine if Alternate Floor Protection Materials are Acceptable All floor
10. necessary Yearly Spring Cleaning e Disassemble the flue connection and take it outdoors for inspection and cleaning Replace weak sections of connector e Inspect the chimney for signs of deterioration Repairs to a masonry chimney should be made by a professional mason Replace damaged sections of prefabricated chimney Your local Vermont Castings dealer or a chimney sweep can help determine when replacement is necessary e Thoroughly clean the chimney Optional Accessories Northfield Cast Iron Surround Model Color NORCSCB Classic Black Exeter Steel Surround Model Color EXSSCB Classic black eooo 46 1170 mm 7 MA Northfield Cast Iron Surround 16 For parts and information about your insert contact your Vermont Castings authorized dealer For the name of the dealer nearest you contact Vermont Castings Group 149 Cleveland Drive Paris KY 40361 800 668 5323 In the event of component failure it is very important to replace with equipment equivalent to the Vermont Cast ings original parts 457 1165 mm yo Exeter Steel Surround 30004671 Merrimack Large Insert Vermont Castings Group reserves the right to make changes in design materials specifications prices and discontinue colors and products at any time without notice Merrimack Large Insert Ref Description Part Number 1 Bottom 30004620 2 Back 30004621
11. or left side of the Fig 7 Measured height from the finished hearth surface to the stove Fig 7 center bar of the flue collar This completes installation of your Merrimack Large Insert 5 Install Mantel and Access Door For enamel units Smoke and CO Detectors Removetie prepackaged mantel and install tie two 4 The use of smoke and carbon monoxide CO detectors AR n a Mat a throughout the home is strongly advised even if not re f 7 p acs Sele ee Insiang quired by building codes or insurance regulations It is stove Removethescrewsandusetoattachthebrackets 2 9004 idea to install a smoke detector in the living ar For classic black units Remove the tie strap holding the ice Aa EA T APON aad me SMOKE perector mantelin place The brackets are already attached to manufacture s placement and installation instructions and the mantel Unwrap the two 2 pre assembled access palpate ty doors and snap into place If the spacing between the You may not however wish to install a detector in the doors and upper lattice is not even you can pull the immediate vicinity of the Montpelier insert Depending on doors mantel off and adjust the upper lattice Screw the the sensitivity of the unit the alarm can be set off while two 2 jacking screws that contact the front up or down you are tending the fire or emptying the ashes If you in as needed Fig 9 stall a detector in the same room locate it as far away 6 Install the Optional Surround Kit
12. protection must be noncombustible i e met als brick stone mineral fiber boards etc Any organic materials i e plastics wood paper products etc are combustible and must not be used The floor protection specified includes some form of thermal designation such as R value thermal resistance or k factor thermal conductivity Procedure 1 Convert specifications to R value i R value given no conversion needed ii k factor is given with a required thickness T in inches iii K factor is given with a required thickness T in inches R 1xT iv r factor is given with a required thickness T in inches R pcr xT 2 Determine the RVAlu of the proposed alternate floor protector i Use the formula in Step 1 to convert values not expressed as R 30004671 ii For multiple layers add R values of each layer to determine overall R value 3 If the overall R value of the system is greater than the R value of the specified floor protector the alternate is acceptable EXAMPLE The specified floor protector should be 1 inch thick material with k factor of 0 84 The proposed al ternate is 4 brick with an r factor of 0 2 over 1 4 mineral board with a k factor of 0 29 Step a Use formula above to convert specification to 1 R value Sl qxT O84 x 1 5 1 79 Step b Calculate R of proposed system 4 brick of r 0 2 therefore R rig 0 2 x 4 0 8 Step c mineral board of k 0 29 therefore 0 20 0
13. reserves the right to withhold final approval of a warranty claim pending a visual inspection of the defect by authorized representatives oR WN 19 LENE GROUP 149 Cleveland Drive Paris Kentucky 40361 www vermontcastingsgroup com
14. 04671 Fig 8 Secure bracket to mantel with two 2 Philips screws Your Insert s Controls and What They Do All Merrimack Large Insert controls are conveniently lo cated on the front Fig 9 Three controls regulate the performance of your Merrimack Large Insert The primary air control supplies oxygen for the fire The variable speed fan control or rheostat regulates the warm air flow into the room An automatic setback control provides a high air setting of restarting or reviving a fire after reloading and closes automatically once the stove reaches operating tempera tures Space Between Doors and Upper Air Control Lever Lattice La Fo Po Po Pa Fon R RR R R FV Fa VF aN FAY MOOI ILI SOIL o O O OOO LA Fan Speed Control Behind louvre Fig 9 Merrimack Large Insert controls Primary Air Control A single air control regulates the amount of heat the fire will produce and how long it will burn The primary air control lever is located on the upper left side on the front of the insert The lever regulates air for starting maintaining and reviving the fire Generally more air entering the stove makes the fire burn hotter and faster while less air prolongs the burn The Merrimack Large Insert s air supply is increased when the control lever is moved to the left and decreased when moved to the right It may be set anywhere between the two extremes depending on the amoun
15. aking Never use abrasives or harsh chemical cleaners on the porcelain enamel finish the enamel may scratch and expose the cast iron which can then stain or rust If you must remove spills or stains from porcelain surfaces make sure the fire is out and the Merrimack Large Insert has cooled completely before cleaning Use a kitchen appliance cleaner and or polish specifically formulated for enamel surfaces Apply the cleaner sparingly with a soft cloth and buff away all traces Cleaning the Glass The Merrimack Large Insert glass system requires a minimum amount of cleaning Most carbon deposits that accumulate will burn off during hot fires Ash residue that accumulates on the glass should be re moved periodically to prevent etching To clean the glass use the following procedure e Be sure the glass is completely cool e Cleaning with water will work in most cases Use a glass cleaner especially made for this purpose only if deposits are specially heavy If heavy deposits are a frequent occurrence however evaluate your operating techniques Do not use abrasive clean ers e Rinse the glass thoroughly e Dry the glass completely 30004671 Adjust the Door Latch Periodically The front door of the Merrimack Large Insert should close securely to prevent accidental opening and should close tightly to prevent air from leaking into the fire chamber The door handle will be positioned vertically when the door is cl
16. ash A primary air hole located under the front brick provides air to the coal bed Fig 12 This hole should be cleared of ash for proper performance 11 Merrimack Large Insert Primary Air Fig 12 Keep primary air holes free of ash for proper perfor mance Add the fuel smaller pieces first If it is necessary to use wood smaller than the 18 460 mm optimum size be sure to fill the firebox as completely as possible by loading the wood pieces alternately on the left and right Split wood will fill the firebox more completely and reduce the frequency of reloading If possible stack wood diagonally to maximize air spaces between fired pieces If you have an ember bed of at least 2 3 51 76 mm the air setting may not need to be adjusted If the ember bed is less than 2 3 51 76 mm activate the automatic setback feature This will provide extra air to start the fire flaming and setback to the desired air setting once the stove is heated Finally adjust the air control and fan speed for your desired heat level NOTE Ifthe charcoal bed is relatively thick and your fuel is well seasoned itis possible to add fresh fuel smaller pieces first close the door and reset the air control immediately Special Tactics for Cold Climate Heating The Merrimack Large Insert is capable of producing up to 55 000 Btu hour and heating an area of up to 2 000 sq ft However many factors affect heating performance and can i
17. ass e4nd Blk __ 1203556_ _35 Brick Bottom Upper Left 30004955 __ 60 Trs Hd PH 10 26 x eZ _ 1200998__ 36 Brick Bottom Center 30004956 O1 Front Sigel Hdl shat BNIVER 20002717 _37 TubeA SecondairyAir 30004377 _ _62 _Nut Hex Jam 16 TOPLK Z 1203290 39 Baule 30004647 ___ _63 _Pawl Assy Roller 30005157__ _39 _Bottom Assy 30004662 _64 _Handle Damper Maple wood blk 1600664 ___ 40 Right Side Shld 2nd Air 30004396 _65 Pan Hd SL 20x3 Z_ 1201310 41 Left Side Shid 2nd Air 30004404 _86 _Insert Lifter Handle NI 1600650 __ T42 Shroud Outer 30004665 _67 _Fallaway Handle Bracket 30005048 __ 43 Top Shroud 30004660 _68 _Nut Acorn 420 2 1203118 44 Flange Flue Collar Surround 30004675 _69 Ss soc 20x1 Cup Pt SS_ 1200414 45 Cover Power Cord 30004379 10 Comer Pin 4 x14 tess 30004405 _ 46 Automatic Air Setback Ass 30004999 _71 Insulation Bottom 30004650 47 Bracket Mantel 30004679 _72 Insulation BHS 30004402 48 Front Hinge TR BL 30004945 _73 Friction Spring 1201846 49 Front Hinge TL BR 30004950 _74 _Bracket Access Door 30004949 50 Disk 30005050 _15 _ Bushing bottom door hinge brekt 30005225 __ 231 Throttle Lever 80005051 Shell Enamel Parts Merrimack Large Insert Classic Black AS 18 30004671 LIMITED LIFETIME Warranty For Vermont Castings Merrimack Non Catalytic Large Insert Limited Lifetime Warranty Vermont Castings Group warrants that all refractory brick and material usedi
18. d The closed container of ash should be placed on a non combustible floor or on the ground well away from all combustible materials pending final disposal If the ash is disposed of by burial in soil or otherwise locally dispersed it should be retained in the closed container until all cinders have thoroughly cooled Wood ash may be used as a gar den fertilizer CAUTION Never use your household or shop vacuum cleaner to remove ash from the fireplace always remove and dispose of the ash properly 30004671 Merrimack Large Insert Maintenance Keep Your Merrimack Large Insert Looking New and Working Its Best Care of the Cast Iron Surface An occasional dusting with a dry rag will keep the painted cast iron of your Merrimack Large Insert looking new If the paint needs retouching first allow the surface to cool completely Mask glass trim parts and enamelled areas Wire brush those areas to be painted Touch up with high temperature stove paint available from your local dealer Apply the paint sparingly Two light coats are better than one heavy one Care of the Porcelain Enamel Surface Use a soft brush as necessary Do not use water or other liquids on your Merrimack Large Insert Fingerprints usually can be buffed off porcelain enamel with a dry soft cloth If marks remain allow the Merrimack Large Insert to cool completely then buff with a slightly damp soft cloth Dry completely before starting a fire to avoid stre
19. delines as you start and maintain the fire and remove the ashes Prior to starting a fire with a cold stove it is recommended to clear the lower primary air hole located at the nose of the front brick To do this remove the andiron and lift out the front refractory brick Sweep any ash accumulation out of the air slot Keeping this slot clear of ash will ensure better performance 1 Open the primary air control fully 2 Lay several sheets of crumpled newspaper in the bottom Place on the paper six or eight pieces of dry finely split kindling On the kindling lay two or three larger sticks of split dry wood approximately 1 2 25 50 mm Do not use chemicals or fluids to start the fire Do not burn garbage or flammable fluids such as gasoline naptha or engine oil Also never use gasoline type lantern fuel kerosene charcoal lighter fluid or similar liquids to start or freshen up a fire in this heater Keep all such liquids well away from the heater while it is in use 3 Lightthe newspaper and close the door Gradually build up the fire by adding a few 3 5 76 127 mm diameter splits If this is your initial break in fire let the fire burn brightly but not to excess Control the fire s intensity by adjusting the air control lever After an hour or so stop adding wood so that the fire dies out gradually For ongoing operation after the initial break in continue to add a few sticks at a time of a progressively larger siz
20. e Be sure to keep the fuel load behind the front grate bar at all times Continue until you have a live ember bed at least 3 4 76 102 mm deep This may take an hour or longer particularly when the Merrimack Large Insert is vented to an exterior masonry chimney or when you are just starting a fire 30004671 Merrimack Large Insert NOTE Effectiveness of a top down method to start a fire Smoke emissions when starting a fire can be difficult to control because the insert is not yet heated to its optimum temperature One method of reducing emissions during a cold start up is the use of a top down kindling procedure In this place larger pieces of kindling on the bottom of the kindling pile followed by smaller and smaller pieces as the pile is added to Very finely split pieces should be on the top Light the kindling pile with a match at the top and allow the kindling to burn downward into the larger pieces This reduces smoke by slowly increasing the fire size without creating an air starved condition You ll soon find that the insert is HOT WHILE IN OPERA TION KEEP CHILDREN CLOTHING AND FURNITURE AWAY CONTACT MAY CAUSE SKIN BURNS NOTE Some chimneys need to be primed or warmed up before they will draw sufficiently to start a fire To cor rect this situation roll up a couple pieces of newspaper place them on top of the kindling and toward the back of the stove light them and close the doors This should hea
21. e heating season to determine if a creosote buildup has occurred If creosote has accumulated it should be removed to reduce the risk of a chimney fire If you do experience a chimney fire act promptly to e Close the primary air control lever fully to the right e Get everyone out of the house e Call the Fire Department from a nearby house You should inspect the system every two months during the heating season as part of a regular maintenance schedule To inspect the chimney let the Merrimack Large Insert cool completely Then using a strong light sight up through the flue collar into the chimney flue The fiber baffle will need to be removed gently to view inside the connector pipe 30004671 Merrimack Large Insert If it is necessary to remove the firechamber to inspect or clean the chimney this is how to do it e Let the Merrimack Large Insert cool e Disconnect the fan power cord e You may wish to lighten the firebox by removing the load door and andiron e Retract the two levelling screws until they bear no weight e Remove the front air tube and fiber baffle e Disconnect the flue collar or vent connector from the top of the stove e Slide the firechamber forward until you have access to the fireplace opening e Inspect the flue You can now inspect the smoke shelf area of the fireplace and the chimney Before replacing the Merrimack Large Insert this area should be inspected for signs of deteriora ti
22. e neers A a Front FIUG SIZ6 sii hearin hers eb e 6 150 mm Fireplace Insert weight ee 480 Ibs 218 kg Primary Air Control 0 ccccceeeeeeeeeeeeeeeeteeeeeeeaes Manual Glass Panel cccccccceeeeees High temperature ceramic Flue exit POSItION eeeeeceeceeeceeeeeeeeeeeteeeeesneeaeees Top Blower rating 150 cfm 115V 60Hz Power Cord Length 6 foot useable installed lt 29 740 mm gt k 2434 629 mm Fig 1 Merrimack Large Insert dimensions 30004671 Efficiency determined by CSA B415 10 Under specific test conditions used during EPA emissions standard testing This value can vary depending on how the unit is oper ated and the type and moisture content of the fuel used The figure shown is based on maximum fuel consumption obtained under laboratory conditions and with average efficiencies These values are based on operation in building code conforming homes under typical winter climate conditions in New England If your home is of nonstandard construc tion e g unusually well insulated not insulated built under ground etc or if you live in a more severe or more temperate climate these figures may not apply Since so many variables affect performance consult your Vermont Castings Authorized Dealer to determine realistic expec tations for your home lt
23. earth surface Measure the front clearance to furnishings etc from the fireplace face Fig 4 Measure side trim EE clearance EE from here ae EZ Fireplace Clearances A Mantel 43 1092 mm B Top Trim 1 41 1041 mm C Side Trim 22 578 mm Clearance shown is for 12 305 mm deep mantel Dimension may be reduced to 41 1041 mm if the mantel is 8 203 mm deep or less Where side trim extends more than 114 38 mm from the fireplace facing the side clearance must be no less than 31 794 mm this is also the required side wall clearance Measure the side clearance C from the exact center of your fireplace opening on the hearth X Measure the top trim B and or mantel clearances A from the finished hearth surface Measure the front clearance to furnishings etc from the fireplace face Fig 4 Observe these clearances to combustible trim Hearth Requirements In some fireplaces the hearth in front of the fireplace open ing is brick stone slate or some other non combustible material that is in direct contact with concrete poured over earth These are the only hearths that are considered noncombustible In other fireplaces the brick or concrete hearth in front of the fireplace opening is supported by heavy wooden framing Because neither brick nor concrete has good insulating properties heat radiated by the fire will pass downward through the hearth to the wooden
24. ed off Overfiring in enamel stoves is identified by bubbling cracking chipping and discoloration of the porcelain enamel finish Vermont Castings Group offers no warranty on chipping of enamel surfaces Inspect your woodburning stove prior to accepting it for any damage to the enamel 3 This warranty does not cover misuse of the stove as described in the Owners Guide nor does it cover a stove which has been modified unless authorized by a Vermont Castings Group representative in writing This warranty does not cover damage to the stove caused by burning salt saturated wood chemically treated wood or any fuel not recommended in the Owners Guide 4 This warranty does not cover a stove repaired by someone other than a Vermont Castings Authorized Dealer 30004671 5 Damage to the unit while in transit is not covered by this warranty but is subject to a claim against the common carrier Contact Vermont Castings Authorized Dealer from whom you purchased your stove or Vermont Cast ings Group if the purchase was direct Do not operate the stove as this may negate the ability to process the claim with the carrier 6 Claims are not valid where the installation does not con form to local building and fire codes or in their absence to the recommendations in our Owners Guide 7 The salt air environment of coastal areas or a high humidity environment can be corrosive to the porcelain enamel finish These conditions can cause rusting o
25. f the cast iron beneath the porcelain enamel finish which will cause the porcelain enamel finish to flake off This warranty does not cover damage caused by a salt air or high humidity environment 8 Vermont Castings Group shall have no obligation to enhance or update any unit once manufactured IN NO EVENT SHALL Vermont Castings Group BE LIABLE FOR INCIDENTAL AND CONSEQUENTIAL DAMAGES ALL IMPLIED WARRANTIES INCLUDING THE IMPLIED WARRAN TIES OF MERCHANTABILITY AND FITNESS ARE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY THIS WARRANTY SUPERCEDES ALL OTHER ORAL OR WRITTEN WARRANTIES Some states do not allow the exclusion or limitations of incidental and consequential damages or limitations on how long an implied warranty lasts so the above limita tions may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state How to Obtain Service If a defect is noted within the warranty period the customer should contact a Vermont Castings Authorized Dealer or Vermont Castings Group if the purchase was direct with the following information 1 Name address and telephone number of the pur chaser Date of Purchase Serial number from the label on the back Nature of the defect or damage Any relevant information or circumstances e g instal lation mode of operation when defect was noted Awarranty claim will then start in process Vermont Cast ings Group
26. g of your heater by altering the air control adjustment range outlined in these directions Use the following primary air control lever and fan speed control lever settings as a starting point to help determine the best settings for your installation Merrimack Large Insert Control Settings Air Circulation Burn Control Fan Rate Setting Speed Control Position High Fully left High Medium full right Low Fully right Horizontal 1 from Low Turn clockwise Off Turn counterclockwise 30004671 Starting and Maintaining a Wood Fire Burn solid wood fuel only in the Merrimack Large In sert and burn it directly on the grate Do not elevate the fuel Do not burn coal or other fuels Cast iron is a superior material for solid fuel stoves but it must be treated with respect Itis extremely strong but can be broken with a sharp blow from a hammer or from the thermal shock of rapid and extreme temperature changes It is important to temper the cast iron plates with an initial series of 3 4 break in fires The plates expand and contract with changes in temperature Minimize thermal stress by allowing the plates to adjust gradually during the break in fires by following Steps 1 3 on the following page WARNING Operate your Merrimack Large Insert only with the door fully closed If the door is left partially open gas and flame may be drawn out of the fireplace opening creating risks of both fire and smoke Follow these gui
27. he flue collar is 20 521 mm Fig 7 This will allow an easy connection once the stove is rolled into place 4 Route the blower power cord Run the power cord out the left or right side of the insert Remove the two 2 louvre doors Fig 9 or access doors Remove the screw and washer from each side holding the ashlip to the front If you run the power cord out the left side remove the two 2 screws holding the rheostat bracket to the fan housing Insert grommet nearest fan in the slot on the fan housing left or right side Reattach rheostat bracket with the two 2 screws removed earlier Remove the cover plate and insert the provided grommet into the slot Reattach the cover plate Merrimack Large Insert e Replace the stainless steel air tubes if removed by sliding them first to the right and then into the mating holes on the left Secure these in place with the stainless steel cotter pins e Before installing the airwash manifold replace the fiber baffle board and ensure it slides all the way to the back There should be a tight fit between the board and the iron sides of the stove e Replace the front air tube and secure it in place with the cotter pin Access 9 Connect the Blower power cord to the power supply DO NOT ROUTE THE POWER CORD UNDER OR IN FRONT OF THE UNIT Possible Handle Bracket E Se 10 Install the supplied handle storage bracket by simply Locations ST2493 sliding the flat end under the right
28. icient wood stove carefully engineered to bring you the latest in wood combustion principles and modern foundry technology This stove transforms a traditional masonry fireplace into a powerful heater You can count on years of comfortable heating and pleasurable fire viewing if you operate and maintain it according to the directions in this Owner s Guide This Insert has been tested and listed by OMNI Test Laboratories of Portland Oregon to UL1482 1996 R2006 for the United States and ULC S628 93 for Canada This Insert is listed to and in compliance with the standards set forth by the Federal Environmental Protection Agency 40 CFR Part 60 532 b as stated on the permanent label attached to the stove This manual describes the installation and operation of this Insert This heater meets the U S Environmental Protection Agency s emission limits for wood heaters sold after May 15 2015 Under specific test conditions this heater has been shown to deliver heat at a rate ranging from 10 750 to 31 780 BTU hr For more complete details on stove performance and specifications please refer to Page 3 The Merrimack Large Insert is designed tested and listed for burning wood Do not burn other fuels Installation or service of the Merrimack Large Insert should be performed only by a qualified installer preferably NFI or WETT Canada certified Please read entire manual before you install and use your new Insert Failure to follow these instruction
29. ields Another requirement to consideris the clearance for movable items such as tables bookcases rugs furnishings and your woodbox All combustible materials of this type should be a minimum of 48 1220 mm from the front surface of the Merrimack Large Insert Be sure that family members are aware of this requirement as well so they too will keep objects a safe distance from the stove Fireplace Minimums A Width at Face 29 B Width at Dimension C 25 C Depth 18 D Height at Face 23 E Height at Dimension C 23 Fireplace Maximums H Lintel depth 9 Width 45 J Height 32 229 mm 1143 mm 813 mm 1 The minimum depth must be maintained from the floor of the fireplace to a height of 21 540 mm 2 Though the Merrimack Large Insert will fit into larger fireplaces the decorative optional Vermont Castings Group Surround Panels will not completely cover the fireplace opening if these dimensions are exceeded Custom made trim pieces may be used Fig 3 Use these measurements to confirm that the Merrimack Large Insert will fit into your masonry fireplace Merrimack Large Insert Clearance Requirements After confirming that your fireplace is the right size check the clearance to combustibles First mark with tape the exact center of your fireplace opening on the hearth Measure the side clearance from this point Measure the top trim and or mantel clearances from the finished h
30. n this product willbe warranted against deterioration not resulting from physical dam age or overloading of the woodstove for the lifetime of this product This coverage includes the components of the EverBurn System shoe fountain and fireback Coverage is provided only to the original purchaser Limited 3 Year Warranty All cast iron parts are warranted for a period of three years against breakage cracking or burn through Limited 1 Year Warranty The following part of the woodburning stove are warranted to be free of defects in material and workmanship for a pe riod of one year from the date you receive it The handles glass door panels door gasketing and porcelain finish Any of these items found to be defective will be repaired or re placed at no charge upon the return of the part with postage prepaid to a Vermont Castings Authorized Dealer Any parts repaired or replaced during the limited warranty period will be warranted under the terms of the limited warranty for a period not to exceed the remaining term of the original limited warranty or six 6 months whichever is longer Exclusions amp Limitations 1 This warranty is non transferable 2 This warranty does not cover misuse of the stove Misuse includes overfiring which will result if the stove is used in such a manner as to cause one or more of the plates to glow red Overfiring can be identified later by warped plates and areas where the paint pigments has burn
31. nfluence the extent to which the Merrimack Large Insert can heat a given area A well insulated home located in a moderate climate and with the Merrimack Large Insert located centrally in an open floor plan will be easier to heat than a drafty home in the far north in which a Merrimack Large Insert is installed on an exterior wall at the end of a long house In Fireplace Insert installations over sized chimneys can produce less effective results than those that are properly sized and interior chimneys usually perform better than those located outside the house Different results may be experienced even in the same installation if you switch from burning good dry wood to wood that is partially rotted or inadequately seasoned 12 To compensate for these factors in cold climates it may be necessary to operate the Merrimack Large Insert for longer periods of time with the air control set to a higher level more of the time Remove and Store Ash Safely Check the ash level before reloading the stove remove ashes if necessary Turn off the fan before shoveling the ash into your ash container Remove ash regularly typically every one to three days The frequency will vary depending on how you operate your Merrimack Large Insert more wood is consumed at higher heat output settings and ash will accumulate faster Disposal of Ashes Ash should be removed frequently and placed outdoors in a metal container with a tight fit ting li
32. on and cleaned thoroughly with a chimney brush Clean the chimney using a specially designed brush the same size and shape as the flue liner Flexible fiberglass rods are used to run the brush up and down the liner caus ing any deposits to fall to the bottom of the chimney where they can be removed through the clean out door The chimney connector should be cleaned by disconnect ing the sections taking them outside and removing any deposits with a stiff wire brush Reinstall the connector sections after cleaning being sure to secure the individual sections with sheet metal screws If you can t do the chimney inspection yourself contact your local Vermont Castings Authorized Dealer or engage a professional chimney sweep to perform the inspection and cleaning of the chimney Reverse the procedure to re install the firechamber Fireplace System Maintenance Schedule Fireplace Daily e Ash should be removed before the level reaches the top edge of the front brick Check each time you re load or at least once a day e Keep the area around the fireplace clear of any combustible material Yearly Spring Cleaning e Remove ash from the firebox and replace with a moisture absorbing material such as kitty litter to keep the interior of the stove dry e Touch up painted surfaces with black paint 15 Merrimack Large Insert Flex Connection Two Months e Inspect the chimney and flue connection Clean the system if
33. osed Over a period of time the gasket around the door will compress and the latch may need adjustment To adjust the handle follow this procedure 1 Remove and retain the lock nut with a 6 wrench Fig 13 2 Loosen the set screw with a Allen wrench 3 Rotate the pawl 180 Replace the lock nut Tighten the set screw 4 Additional adjustment can be made by removing the flat washer Or any combination of washer removal and or pawl rotation Roller Shoulder Screw Set Screw Flat Washer Handle ST1154 Fig 13 Rotate pawl and or remove flat washer to adjust latch Test the door seal Close the door on a dollar bill and attempt to pull it free If the bill is freed with little resistance the gasket isn t snug enough at that spot Continue to make small adjustments until the setting is right If additional adjusting of the latch does not enable the door to seal sufficiently in one area try adjusting the gasket in that area Pack more cement or a smaller diameter gasket into the channel beneath the gasket so the main gasket is raised and makes contact with the door frame If this procedure doesn t solve the problem replace the gasket Instructions for gasket replacement are given later in this section 13 Merrimack Large Insert IMPORTANT NOTES Do not operate the Merrimack Large Insert if the glass is damaged or broken Do not abuse glass by striking with any object or by slamming the door
34. oss sectional area of the flue must be less than or equal to three times the area of the flue collar If larger the chimney must be re lined e Means must be provided to prevent room air passing to the chimney cavity e Provision must be made for removal of the insert to clean the chimney flue General Considerations U S e While not required in most jurisdictions in the U S Vermont Castings Group strongly recommends that a full stainless steel chimney liner be installed for the insert to the chimney top to increase overall performance and to ease and reduce yearly main tenance e A masonry chimney must be well constructed and must meet minimum code requirements The chim ney flue should have a code approved liner made of masonry or pre cast refractory tiles straight or flex ible stainless steel pipe or a poured in place liner An unlined chimney must be relined professionally e The chimney musthave a nominal flue size of 6 152 mm diameter or 28 square inches 181 cm but no greater than 3 times larger or 85 square inches 548 cm A chimney larger than this must be re lined Be aware that a chimney originally designed for fireplace use may perform differently when used to vent an air controlled appliance such as your Merrimack Large Insert even if the flue is less than 3 times larger than the flue collar For example a chimney on an outside wall may not heat up enough to sustain an adequate draft Such a flue
35. own on a padded surface e Remove the glass Follow the instructions for remov ing and replacing glass which start on Page 14 e Replace gaskets Follow steps 1 4 above e Replace the glass e Replace the door The Chimney System A Clean Chimney System is Safer and Works Better Although the non catalytic combustion system in your Merrimack Large Insert can reduce creosote formation dramatically itis not a substitute for regular inspection and cleaning of the chimney and chimney connector Learn to Recognize And Avoid Creosote Your Merrimack Large Insert has been designed to mini mize creosote build up Regular chimney inspection and maintenance however must still be performed For safety good stove performance and to protect your chimney and chimney connector inspect your chimney and chimney connector on a regular schedule Clean the system if necessary Failure to keep the chimney and connector system clean can result in a serious chimney fire Creosote Formation and Need for Removal When wood is burned slowly it produces tar and other organic vapors which combine with expelled moistue to form creosote The creosote vapors condense in the relatively cool chimey flue of a slow burning fire As a result creosote residue accumu lates on the flue lining When ignited this creosote makes an extremely hot fire The chimney and chimney connector should be inspected at least once every two months dur ing th
36. rrimack Large Insert Flexible Flue Liner Flex Liner Adapter if required Adjustable 26 or verti cal Flue Collar w Inte grated Draw Down Bar Top of the Insert Around Flue Opening Washers Dia 4 20 Hex Nuts ST1002 Fig 6 Components of the venting system In most applications cleaning of the chimney system will be easiest from the top chimney cap down If this is the planned method for your application the center iron pull down handle on the flue collar serves as protection to prevent a chimney brush from damaging the baffle inside the stove If cleaning can only take place from inside the home the center bar may be cut out of the flue collar using a hack saw or reciprocating metal cutting saw 3 Install the venting system Again depending on your application it may be easiest to install the connector or stainless steel flue liner in the chimney first Refer to Figure 6 for the components of the venting system e Carefully remove the fiber baffle by first removing the front air wash manifold If necessary remove the air tubes to allow easier access e Remove the iron flue collar from the stove and fasten either the adapter pipe or flue liner to it by drilling three holes using the holes in the iron collar as a guide e Secure the flexible pipe to the pipe adaptor using the same method e Install the connector pipe or liner so that the height measured from the finished hearth surface to the center bar of t
37. s may result in property damage bodily injury or even death Save These Instructions for Future Reference ETE of Contents The Merrimack Large Insert is designed Specifications Installation Smoke Alarm Safety Tip The Merrimack Large Insert is not listed for Operation mobile home installations tested and listed for burning wood Do not burn other fuels Maintenance Failure to follow these instructions may re Optional Accessories sult in property damage bodily injury or even Replacement Parts death W t alt WARNING This stove has not been tested with an unvented gas log set To reduce the risk of fire or injury do not install an unvented gas Proposition 65 Warning Fuels used in gas woodburn log set into this fireplace ing or oil fired appliances and the products of combus tion of such fuels contain chemicals known to the State of California to cause cancer birth defects and other reproductive harm California Health amp Safety Code Sec 25249 6 2 30004671 Merrimack Large Insert Specifications Merrimack Large Insert EPA Emissions Rating 3 6 g hr Efficiency AN wen 2 ete etaadteet edited evalu staat 67 Range of heat output 10 750 31 780 BTU hr Maximum heat output eee 55 000 BTU hr Area heated lennenen up to 2 000 sq ft Size of wood SplitS eee up to 22 560 mm Fuel Capacity cccceeeseeeeeeestteeeeeenaes 40 Ibs 18 kg Ladini crests ndr iv
38. sting Masonry or Factory Built Chimneys and Vents or CAN ULC S640 Standard for Lining Systems for New Masonry Chimneys e The opening of the fireplace around the insert must be sealed to prevent room air passing to the fireplace cavity e Existing air circulation chambers in a fireplace with a steel liner may not be blocked e Provision must be made for removal of the insert to clean the chimney flue e The existing fireplace damper if any should be locked in the open position e Apermanent metal warning label must be affixed to the back of the fireplace stating the fireplace may have been altered to accommodate the insert and may be unsafe to use as a conventional fireplace A Fireplace Modification Tag is included in the hardware bag inside the Merrimack Large Insert 30004671 Merrimack Large Insert Minimum Fireplace Dimensions The Merrimack Large Insert will fit many fireplaces To confirm that it will fit yours measure the lintel depth plus the height width and depth of your fireplace and hearth Compare them to the measurements in the accompanying chart If you choose to install a new hearth over an existing fireplace hearth be sure to take its thickness into consid eration when measuring both front and back height of the fireplace and clearances to any existing trims and mantels NOTE Theclearance between the Merrimack Large Insert and the mantel top trim and side trim cannot be reduced by installing sh
39. t the chimney enough to initiate a draft Once the draft is established open the front door and light the rest of the fuel from the bottom Do not light the main bed of fuel until the chimney begins drawing and repeat the procedure as often as necessary if the initial attempt is unsuccessful 4 Once a good ember bed of at least 3 4 76 102 mm has formed add the desired amount of wood and close the primary air control to a medium low setting The fire volume will diminish immediately but the Merrimack Large Insert will continue to heat up Maintain control of the fire using the primary air control and remember reduce the setting for less heat increase the setting for more heat Refer to the air control settings chart on Page 10 for recommended settings at different burn rates Do not over fire this heater Overfiring may cause a house fire or can result in permanent damage to the stove If an exterior part of the Merrimack Large Insert glows you are overfiring Reloading and Reviving a Wood Fire Set the air control on High and wait at least fifteen sec onds for the draft to increase Turn the convection blower off Open the doors slowly IMPORTANT While the stove is hot toss and sift the coals with each stove loading This loosens and helps burn coals that become buried in the ash Push coals away from the bottom air jet Creating this void helps maintain a reliable fire Check the ash level and remove excess
40. t of heat desired Fig 10 To complement the manual setting of the air control the Merrimack Large Insert has an integral convection air blower that ensures an even delivery of heat at the manual setting you select 30004671 Merrimack Large Insert Air Control Open _ Control Lever to the Left PAARA RK RR Pa Fae a A a lana aa aaa 70 0 V V V VV V NNN Oe aTa Fig 10 The air control lever controls the amount of air enter ing the firebox The convection fan delivers a steady stream of warm air into the room Use the fan speed control to regulate the flow of air into the room A thermal switch will automatically de activate the fan when the stove cools down When starting a fire in a cold stove this switch will typically energize the fan within about 20 minutes after the stove heats up The fan speed should be set at low fully closed when operating at low to medium burn rates and may be set anywhere between low and high when operating at high burn rates Refer to Figure 11 for fan access Speed Control Open Bottom Louvre to Access Fan controls Fig 11 Fan control access WARNING This wood heater has a manufactured set minimum low burn rate that must not be altered It is against federal regulations to alter this setting or otherwise operate this wood heater in a manner inconsistent with operating instructions in this manual
41. th your local building inspector or fire marshal Provision should be made to restore the fireplace to its original condition if the insert is removed Do not remove bricks or mortar that may jeopardize the compliance of the fireplace with local building codes The Merrimack Large Insert is not approved for instal lation in factory built fireplaces Requirements for Existing Chimneys Chimney requirements differ for the U S and Canada Specifications for each are listed below Connect the insert to the chimney in accordance with local codes and the requirements of the listing agency as specified in this manual Chimney Height U S and Canada Chimney height should be no less than 15 4 5 m above the hearth and no more than 35 10 5 m The chimney should extend at least 3 914 mm above the highest point where it passes through a roof and at least 2 610 mm higher than any portion of a building within 10 3 m Fig 2 DO NOT CONNECT YOUR MERRIMACK LARGE IN SERT TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE A O To 10 2 Min 3 y 3 a 0To010 Min 2 vin Min i Reference Fig 2 The 2 3 10 rule for chimneys In the U S ANSI NFPA 211 1988 when installed in a masonry fireplace e A connector must extend from the flue collar to the flue liner e The cr
42. urn The control setting also depends on your particular draft or the force that moves air from the stove up through the chimney Draft is affected by such things as the length type and location of the chimney weather local geography nearby obstructions and other factors Too much draft may cause excessive temperatures in the Merrimack Large Insert and could even damage internal components On the other hand too little draft can cause backpuffing into the room or a very sluggish fire How do you know if your draft is excessively high or low Symptoms of too much draft include an uncontrollable burn or glowing red cast iron A sign of inadequate draft is smoke leaking into the room through the stove or chimney connector joints low heat and dirty glass In some newer homes that are well insulated and weather tight poor draft may result from insufficient air in the house In such instances an open window near the stove on the windward side of the house will provide the fresh air needed When first using the stove keep track of the settings of the air controls You will quickly find that a specific setting will give you a fixed amount of heat It may take a week or two to determine the amount of heat and the length of burn you should expect from various settings Most installations do not require a large amount of combus tion air especially if adequate draft is available Do not for any reason attempt to increase the firin
43. ve an effect on how quickly flaming occurs The automatic setback air control is a convenient feature allowing more user flexibility and ease of operation Burn Only High Quality Wood The Merrimack Large Insert is designed to burn natural wood only do not burn fuels other than that for which it was designed You ll enjoy the best results when burning wood that has been adequately air dried Avoid burning green wood that has not been properly seasoned or cordwood that is more than two years old The best hardwood fuels include oak maple beech ash and hickory that has been split stacked and air dried outside under cover for at least one to two years For areas that do not have a supply of hardwood com monly burned softwoods include tamarack yellow pine white pine Eastern red cedar fir and redwood These too should be properly dried Your Merrimack Large Insert will accept wood up to 22 559 mm Longer wood pieces work better than short ones Wood should be stored under cover to maintain dryness Even for short term storage however keep wood a safe distance from the heater and keep it out of the areas around the heater used for re fueling and ash removal 10 Use the Air Control Settings that Work Best for You No single air control setting will fit every situation Settings for each installation will differ depending on the quality of the fuel the amount of heat desired and how long you wish the fire to b
44. y on those parts that move gaskets can become brittle and compressed and can begin to lose their effectiveness These will need periodic replacement All of the gaskets used are made of fiberglass The three sizes of replaceable gasket are listed below along with their application Replaceable Merrimack Large Insert Fiberglass Gaskets Gasket Size 405 And The Parts It Seals 1203589 eee Door to the front 4 5 30002422 Firebox parts Ye 1203556 Glass to the door 4 6 To change a gasket wait until the fire is out and the stove has cooled Wear protective eyewear and a dust mask The procedure is the same for all gaskets 1 Remove the existing fiberglass gasket by grasping an end and pulling firmly 2 Use a wire brush or the tip of a screwdriver to clean the channel of any remaining wood glue silicone or bits of gasket 3 Apply a thin bead of high temperature silicone to the newly cleaned door gasket groove A 16 bead is sufficient 4 Apply a thin bead of wood glue to the newly cleaned glass gasket area A e bead is sufficient 5 Place a new gasket into the groove Wait until you have placed all but a couple inches from the end before you trim the end to an exact fit Door 3 Gasket Glass Glass Panel Gasket Fig 14 Replace glass ST1155 14 30004671 Replacing the Door Gaskets e Remove the door by lifting it straight up from its hinge pins e Lay it face d
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