mors 3112B and 3142B Convection Wood Stove Installation Guide

mors 3112B and 3142B Convection Wood Stove

Product Information

Specifications:

• Model: 3112 B & 3142 B
• Intended Use: Room Heater
• Region: North America
• Material: Cast Iron
• Fuel Type: Wood
• Installation Location: Not for use in any fireplace
• Certifications: Listed by PFS TECO, Portland, Oregon USA

Product Usage Instructions

Installation

Unpacking the Stove
After unpacking, ensure that the center grate and fire bricks are securely in place. Check the air control functionality as well.

Checking Loose Parts
Verify that the center grate and fire bricks have not shifted during transit. Make sure the air control operates smoothly.

The Chimney/Flue System
Ensure proper connection of the flue system according to installation instructions.

Flue Connection
Follow guidelines for connecting the flue to the stove.

Connection to Existing Chimney
Position and connect the stove to the existing chimney as per regulations.

Positioning the Stove
Place the stove at a safe distance from combustible materials and follow floor protection requirements.

Operation
Before Starting

Prior to use, ensure all safety precautions are in place and clearances are met.

Lighting & Loading Intervals
Follow recommended intervals for lighting and loading wood into the stove.

Maintenance
Exterior Maintenance

Maintain the exterior of the stove regularly to ensure longevity.

Internal Maintenance
Check and maintain internal components for proper operation.

Cleaning the Stove & Flue
Clean the stove and flue system periodically to prevent blockages.

Leaving the Stove for Extended Periods
Follow recommendations when leaving the stove unused for extended periods.

FAQ (Frequently Asked Questions)

• Q: Can this stove burn fuels other than wood?
  A: No, this stove is designed for burning wood only.

• Q: Can I install this stove in a fireplace?
  A: No, do not install this stove in any fireplace.

• Q: What should I do if I encounter dangerous situations during installation?
  A: If you face any dangerous situations, stop the installation and seek advice from local building officials or your dealer.

Congratulations on the purchase of your new Morsø stove!
Morsø, which is the largest supplier for the Danish market, has manufactured stoves of the highest quality since 1853. By following the instructions overleaf, we are sure that you will enjoy the use and the benefits of your stove for many years to come.

• Read this entire manual before you install and use your new room heater. If this room heater is not properly installed, a house fire may result. To reduce the risk of fire, follow the installation instructions. Failure to follow instructions may result in property dam-age, bodily injury, or even death.
• Contact local building officials about restrictions and installation inspection requirements in your area.
  Save these instructions

Optional Accessories

• A wide range of accessories (such as handling gloves, fireside tools, glass cleaner and heat-proof paint) are available for use with your Morsø stove. They help with day-to-day running and maintenance. Contact your Morsø dealer for more information.
• The Morsø 3112 B & 3142 B meets the U.S. Environmental Protection Agency’s emission limits for wood heaters sold on or after May 15, 2020.
• Certified to comply with 2020 particulate emission standards using crib wood.
• The Morsø 3112 B & 3142 B have been certified by PFS TECO. The test standards are UL-1482-2011 for the United States and ULC-S627-00 for Canada.

The stove is listed for burning wood only. Do not burn other fuels.

• Under specific test conditions, this heater has been shown to deliver heat at rates ranging from 9,199 to 28,000 Btu´s.
• This appliance was determined to have an average higher heating efficiency value of 68% when tested by CSA B415.1
• This wood heater needs periodic inspection and repair for proper operation. It is against federal regulations to operate this wood heater in a manner inconsistent with oper-ating instructions in this manual.

Cast iron
Cast iron is a live material. There are no two identical ovens. This is partly due to the tolerances of the casting process, partly because the ovens are a work of craftsmanship. Minor unevennesses may also occur in the cast iron surface.

Installation of your Morsø stove

• The installation must conform standard CAN/CSA-B365, Installation Code For
• Solid-Fuel-Burning Appliances and Equipment
• Make-shift compromises during installation can have consequences, the Installation of the woodburning stoves must be safe and legal.
• If your Morsø stove is not installed correctly, it may cause a house fire. To reduce the risk of fire, the installation instructions must be followed carefully. Contact the local building officials about restrictions and installation inspection in your area.

Do not install in any fireplace

• Before you start installing your stove, make sure that:

All neccessary approvals are needed from the local building officials.
The data plate, which is located on the back of the stove, provides information regarding safety testing information, name of certified testing laboratory, and installation requirements.
Installation requirements vary in different districts, and the local building officials have the final authorization to approve your installation. You should discuss the installation with them before beginning. Please ask your dealer for further information.
Do not connect to any air distribution duct or system.
Important: If the installation instructions are not followed carefully, it may cause dan-gerous situations like chimney – and house fires. Follow the instructions carefully and do not deviate from them as it may cause injuries to people or property.

Checking loose parts in the stove

After unpacking, check that the center grate (in the centre of the fire bed) and the fire bricks are firmly in position and have not shifted in transit. Check also that the air control works freely.
The stove is heavy and therefore it is strongly recommended that when lifting, it is under-taken by two people.

Fitting instructions for Legs

Morsø 3112 B: After removing the outer packaging, flatten it and lay onto the floor close to the stove; this can then act as protective work surface during the assembly process. Next, remove the legs and bolts from inside the stove. Gently lay the stove onto its back and unscrew it from the wooden pallet. Using the bolts supplied, now screw the legs into position on the underside of the base. The stove should now be lifted and moved into the upright posi-tion, avoiding excess load on the back legs.
Morsø 3142 B: After removing the outer packaging, the stove should now be lifted and moved into the position.

How to position the baffle and access baffle
Make sure that the upper baffle plate (2) is located into its correct position. It should be placed on top of the rear (fixed) baffle sec-tion and secured into position against the 2 upstanding cast lugs.
Note: The access baffle (3) must always be fitted when the stove is in use, as it not only assists the combustion process, but also gives essential protection to the stove’s top plate.

Standard Accessories
Poker, ceramic flue connection gasket and riddling tool are standard accessories, and can usually be found in the ashpan or firebox area.

The chimney / flue system

• Note that the flue system must be independently secured and must not rely on the stove for support. Do not install the chimney directly at the outlet of the appliance.

• A chimney connector (flue pipe) is required unless the appliance is specifically approved for that type of installation. A chimney connector is included with the heater.

• The stove must not be connected to a chimney flue serving any other appliance.
  (Several flues may run up a single chimney stack; use one flueway per appliance).

• Use a residential type masonry or listed type HT factory-built chimney.

• High Temperature (H.T.) Chimney Standard UL-103-1985 (2100º F.) for the USA, and High Temperature (650ºC) Standard ULC S-629 for Canada.

• The internal dimensions of the chimney connector and chimney must not be less than 6 inch-es diameter (or equivalent cross section), and should not be significantly larger than this. Too large a section will tend to allow the flue gases to cool excessively, causing sluggishness or unpredictability in the stove’s performance.

• We recommend the length of the chimney system should be at least 16 feet (not required) above the stove in normal domestic situations, measured from the flue collar to the top of the chimney. Local conditions like for example – roof constructions, large trees nearby and high altitude, may influence the chimney draft and height. Therefore, contact the local pro-fessional chimney sweep or your Morsø dealer.

Typical factory-built or masonry chimney installations

Be sure that all connectors between the chimney parts and the heater are sealed properly so the chimney is airtight from the heater to the chimney outlet.

Flue Connection

• The stove is supplied from the factory with a flue collar fitted to the top plate and a round blanking plate blocking off the rear flue exit (behind the rear shield plate).
• Use a 24 MSG black or blue chimney connector or listed double-wall chimney connector. Re-fer to local codes and the chimney manufacturer’s instructions for precautions required for passing a chimney through a combustible wall or ceiling. Remember to secure the chimney connector with a minimum of three screws to the product and to each adjoining section. Where a rear flue installation is required, simply knock out the top steel plate in the rear heat convection panel. This is best done by applying gentle hammer taps immediately onto the small ”bridges” in the circular cut-outs. Once the knock-outs have been removed unbolt the cast iron blanking plate and install it into the top of the stove. The flue collar can then be bolted over the rear flue outlet using the bolts and clamps provided.
• The cast iron blanking plate can also function as extra clean-out access whilst performing the annual cleaning service of the stove and chimney.
• Wear gloves and protective eyewear when drilling, cutting or joining sections of the chim-ney connector.

Connection to the existing chimney

• A chimney connector is a double-wall or single-wall pipe that connects the stove to the chim-ney. The chimney itself is the masonry or prefabricated structure that encloses the flue. Chim-ney connectors are used only to connect the stove to the chimney.
• Double-wall connectors must be tested and listed for use with solid-fuel-burning appliances. Single-wall connectors should be made of 24 gauge or heavier gauge steel. Do not use a galvanized connector; it cannot withstand the high temperatures that smoke and exhaust gases can reach, and may release toxic furnes under high heat. The connector must be 6 inches (150mm) in diameter.
• If possible, do not pass the chimney connector through a combustible wall or ceiling. If passage through a combustible wall is unavoidable, refer to the sections on Wall Pass-Throughs. Do not pass the connector through an attic, a closet or similar concealed space when installing the chimney connectors.
• It is important to keep the flue gases moving smoothly in the right direction. Do not vent into a large void at this location; rather form one continuous section up. Use mild bends (e.g. 45º vs. 90º) rather than sharp angles where a change of direction is required. All parts of the venting must be accessible for cleaning purposes.
• In horizontal runs of chimney, maintain a distance of 18 inches from the ceiling. Keep it as short and direct as possible, with no more than two 90-degree turns. Slope horizontal runs of connector upward 1/4 inch per foot (20 mm per metre) going from the stove toward the chimney. The recommended maximum length of a horizontal run is 3 feet (1 metre), and the total length should be no longer than 8 feet (2.5 metres).
• Information on assembling and installing connectors is provided by the manufacturer’s in-structions exactly as you assemble the connector and attach it to the stove and chimney.
• Be sure the installed stove and chimney connector are correct distances from nearby combustible materials. See the clearance paragraph page 8.

Chimney Connector Systems and Clearances from Combustible Walls for Residential Heating Appliances

• Minimum 3.5-in thick brick masonry all framed into combustible wall with a minimum of 12-in brick separation from clay liner to combustibles. The fireclay liner shall run from outer surface of brick wall to, but not beyond, the inner surface of chimney flue liner and shall be firmly cemented in place.
• Solid-insulated, listed factory-built chimney length of the same inside diameter as the chimney connector and having 1-in. or more of insulation with a minimum 9-in. air space between the outer wall of the chimney length and combustibles.
• Sheet steel chimney connector, minimum 24 gauge in thickness, with a ventilated thimble, minimum 24 gauge in thickness, having two 1-in. air channels, separated from combustibles by a minimum of 6-in. of glass fiber insulation. Opening shall be covered, and thimble supported with a sheet steel support, minimum 24 gauge in thickness.
• Solid insulated, listed factory-built chimney length with an inside diameter 2-in. larger than the chimney connector and having 1-in. or more of insulation, serving as a pass-through for a single wall sheet steel chimney connector of minimum 24 gauge thickness, with a minimum 2-in. air space between the outer wall of chimney section and combustibles. Minimum length of chimney section shall be 12-in. chimney section spaced 1-in. away from the connector using sheet steel support plates on both ends of chimney section. Opening shall be covered, and chimney section supported on both sides with sheet steel supports securely fastened to wall surfaces of minimum 24 gauge thickness. Fasteners used to secure chimney section shall not penetrate chimney flue liner.

Positioning the stove

Distance to walls and lintel

• When the stove is positioned near combustible materials, observe all current local and national building regulations with regards to clearances. Distances may need to be increased if the materials are sensitive to heat. Note also that wall paper and other decorative materials may become detached with the effects of heat and care should be taken to ensure that they do not fall towards the stove in such an event.
• When the stove is positioned near non-combustible materials, a gap of 4 inches or more is recommended for cleaning purposes and to ensure that heat circulates around the stove and out into the room.
• This heater heaters meets the requirements of CAN/ULC-S627 and are suitable for installation on a combustible floor and do not require radiant floor protection. Please read below regarding floor protection from falling embers.

CLEARANCE REQUIREMENTS| STANDARD RESIDENTIAL INSTALLATION SINGLEWALL CONNECTOR
---|---
3112 B| 3142 B
A.       Sidewall to unit

B.       Backwall to unit

C.       Cornerwall to unit

D.       Sidewall to connector

E.       Backwall to connector

F.       Cornerwall to connector

| 20” (508 mm)

12” (305 mm)

17” (432 mm)

25” (635 mm)

14.5” (368 mm)

23” (584 mm)

| 16” (406 mm)

9” (228 mm)

13” (330 mm)

23” (584 mm)

12” (305 mm)

19” (483 mm)

CLEARANCE REQUIREMENTS| STANDARD RESIDENTIAL INSTALLATION DOUBLEWALL CONNECTOR
---|---
3112 B| 3142 B
A.       Sidewall to unit

B.       Backwall to unit

C.       Cornerwall to unit

D.       Sidewall to connector

E.       Backwall to connector

F.       Cornerwall to connector

| 20” (508 mm)

8” (203 mm)

15” (381 mm)

25” (635 mm)

10.5” (267 mm)

21” (533 mm)

| 16” (406 mm)

7” (178 mm)

11” (279 mm)

23” (584 mm)

10” (254 mm)

17” (432 mm)

Rear vent out the back configuration

CLEARANCE REQUIREMENTS| STANDARD RESIDENTIAL INSTALLATION

rear vent out the back – doublewall connector

---|---
3112 B| 3142 B
A.       Sidewall to unit

B.       Backwall to unit

D.  Sidewall to connector

| 20” (508 mm)

9” (229 mm)

25” (635 mm)

| 16” (406 mm)

8” (203 mm)

23” (584 mm)

CLEARANCE REQUIREMENTS| ALCOVE INSTALLATION WITH DOUBLEWALL CONNECTOR
---|---
3112 B| 3142 B
A.       Sidewall to unit

B.       Backwall to unit

D.       Sidewall to connector

E.       Backwall to connector

G.       Unit to ceiling

H.       Floor to ceiling

| 20” (508 mm)

9” (229 mm)

25” (635 mm)

11.5” (292 mm)

33” (838 mm)

60” (1524 mm)

| 16” (406 mm)

8” (203 mm)

23” (584 mm)

11” (279 mm)

33” (838 mm)

62” (1575 mm)

FLOOR PROTECTION REQUIREMENTS| NON-COMBUSTIBLE MATERIALS BENEATH STOVE
---|---
USA| CANADA
A.       Extending distance, back

B.       Extending distance, right side

C.       Extending distance, left side

D.       Extending distance, front

| –

6”

6”

16”

| 200 mm

200 mm

200 mm

450 mm

• In the US, floor protection must be constructed of a non-combustible material and installed to extend beneath the heater and 16’’ to the front and 6’’ to the sides of the fuel loading door and ash removal openings.
• In Canada, to comply with CSA B365, Installation Code for Solid-Fuel-Burning Appliances and Equipment, any combustible covering beneath the appliance and/or within the area extending horizontally at least 450 mm (18 in) beyond the appliance on any side equipped with a door, and at least 200 mm (8 in) beyond the appliance on other sides, shall be protected by a continuous, durable, non-combustible pad that will provide ember protection. The 450 mm (18 in) ember protection required on any side with a door shall extend for the full width of the appliance plus the 200 mm (8 in) required on each side of the appliance without a door. Where an appliance is installed less than 200 mm (8 in) from a wall, the ember pad need only extend to the base of the wall. An ember pad shall not be placed on top of a carpet unless the pad is structurally supported to prevent displacement and distortion.

Distance to furniture

• The recommended minimum distance from stove to furniture is 30 inches. Note that some furniture is more easily affected by heat and may need to be moved to a greater distance. This is your responsibility.
• In addition other combustible materials, away from the stove. In general, a distance of 30 inches must be maintained between the stove and moveable combustible item such as drying clothes, newspapers, firewood etc

Mobile Home Installation (Mobile home installation is only applicable for USA) The Morsø 3112 B & 3142 B can be installed in a mobile home if equipped with an outside combustion air kit, a terminal cap with a spark arrestor, and if it meets the following installation requirements:

• The stove must be secured to the mobile home structure by bolting through the hearth pad and into flooring.
• The stove must be installed with a listed Type HT chimney connector, HT Chimney, and terminal cap with spark arrestor. Never use a single wall connector (stovepipe) in a mobile home installation.
• Floor protection requirements in section 1.5 must be followed precisely.
• Follow the chimney and chimney connector manufacturer’s instructions when installing the flue system for use in a mobile home.
• Outside air kit should be installed according to installation guide in the kit.
• Intake air piping can be installed through the floor into a vented crawl space or through the wall of the residence to obtain outside air.
• Install in accordance with 24 CFR, Part 3280 (HUD).
• NOTE: Top sections of chimney must be removable to allow maximum clearance of 13.5’ from ground level for transportation purposes.

WARNING:
NEVER DRAW COMBUSTION AIR FROM A WALL, FLOOR OR CEILING CAVITY OR FROM ANY ENCLOSED SPACE SUCH AS AN ATTIC OR GARAGE. DO NOT INSTALL IN A SLEEPING ROOM.

CAUTION:
THE STRUCTURAL INTEGRITY OF THE MOBILE HOME FLOOR, WALL, AND CEILING/ ROOF MUST BE MAINTAINED (I.E., DO NOT CUT THROUGH FLOOR JOIST, WALL STUD, CEILING TRUSS, ETC.) DO NOT USE A GRATE TO ELEVATE FIRE – BUID FIRE DIRECTLY ON HEARTH.

FOR CANADA : DO NOT INSTALL IN A TRANSPORTABLE BUILING/MOBILE HOME

Note:
Acid Protection
If acid-washing the masonry around the stove, protect the stove surface with an acid-proof cover.

Fresh Air Inlet
Unless there is deemed to be sufficient ambient leakage of air into the room via doorways, windows and the like, a dedicated fresh air inlet will be needed. This inlet should have 2 square inches (1250 square mm) of free air space. This is particularly importAnt where the room is well sealed, or where an extractor hood or ventilation system disturbs the natural air pressure. Such an inlet should not be on a wall that is usually subject to negative pressure from normal wind pattern. Avoid placing the inlet directly across the room from the stove, thus causing a cold air draft.

Operation

Before you start firing

For use with solid wood fuel only. Do not overfire, if heater or chimney connector glows you are overfiring. Inspect and clean chimney frequently. Under certain conditions of use creosote buildup may occur rapidly. Because of risk of smoke and flame spillage, operate only with door fully closed.

Caution:

• Hot while in operation. Keep children, clothing and furniture away. Contact may cause skin burns.
• Do not use chemicals or fluids to start the fire.
• Do not burn garbage or flammable fluids.
• Do not use gasoline, gasoline-type lantern fuel, kerosene, charcoal lighter or fluid or similar liquids to start or freshen up a fire in this heater. Keep all such liquids away from the heater while it is in use.

Choosing your fuel

• All types of natural untreated wood can be burned on your stove, but they must be well-seasoned and dry. Once the wood is cut to length, it should be split down the middle – to suit the dimensions given below – to allow moisture to evaporate.
• Cut the wood to a length of max 12 inches (30 cm) and approx. 3 to 3.5 inches (7-8 cm) in section. If you can weigh your wood, aim for around 2 lbs. For correct combustion and heat output, wood fuel should contain no more than 20% moisture; this can easily be checked by using the Morsø Moisture Meter (part # 62929900).
• To naturally season wood fuel, stack and store it under cover in an airy location where fresh air can move through each piece. Some softwoods may take as little as one good summer to season whereas harder woods such as oak, maple, and elm may require seasoning up to 18 months. Avoid overly dry wood that is gray in color as under certain conditions it can cause performance problems, such as back-puffing and sluggishness. Well-seasoned wood will be light to hold and will show signs of cracking from the center-out in the ends. If your wood spits or sizzles when burnt, and your stove’s door glass persistently mists up, your wood is not properly seasoned. Never use driftwood (from the sea), whose salt content may cause corrosion, nor construction wood that may have been impregnated with chemicals.

Starting the first fire:

• The initial fire should be small so that the stove paint can cure and the main plates of the stove can settle into position. Some fumes will be given off by the paint. Ventilate the room during this phase.
• The setting of the valve, lighting techniques and loading intervals will depend on the chimney draft, the fuel used, the heat required and so on. Some basic techniques are outlined below.
• This wood heater has a manufacturer-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.

DO NOT BURN

• Garbage
• Lawn clippings or yard waste
• Materials containing rubber, including tires
• Materials containing plastic
• Waste petroleum products paints or paint thinners, or asphalt products
• Materials containing asbestos
• Construction or demolition debris
• Railroad ties or pressure-treated wood
• Manure or animal remains
• Saltwater driftwood or other previously salt-water-saturated materials
• Unseasoned wood
• Paper products, cardboard, plywood, or particleboard. . The prohibition against burning these materials does not prohibit the use of fire starters made from paper, cardboard, sawdust, wax and similar substances to start a fire in an affected wood heater.

Burning these materials may result in the release of toxic fumes or render the heater ineffective and cause smoke.

Carbon monoxide detectors

• The tested carbon monoxide (CO) emission rate for the 3100 B series is 0.93 g/min. Almost all combustion produces CO, including wood fire. CO is a toxid and harmful gas. However, you can greatly reduce CO levels by maintaining a well-established fire and avoiding operations the produce a smoldering, smoky fire. a smoldering, smoky fire. We highly recommend that a CO monitor (detector) to be installed in the same room as the stove.
• It is required in some jurisdictions to install smoke and carbon monoxide detectors where heaters are installed. Install at least one smoke detector on each floor of your home to ensure your safety. It should be located away from the wood appliances and close to the sleeping areas. Locating a smoke detector too close to a wood appliance can cause the smoke detector alarm to sound if a puff of smoke is emitted while the wood appliance door is open during reloading. Follow the smoke detector manufacturer’s placement, installation, and maintenance instructions

In principle

• Your stove is fitted with Primary and Secondary air inlets.
• Primary Air is controlled using the lever situated under the ash lip of the stove. Moving the control lever into a downward position will open the air inlet and will allow a supply of preheated air to enter the firebox via the ‘airwash’ system situated inside the stove and the above glass.
• Secondary Air is delivered to the firebox using the specially designed baffle at the back of the firebox. The secondary air is injected into the flue gases both above and in front of the fire resulting in a cleaner, more efficient combustion process. The supply of secondary air is fixed open and is not adjustable. The lower air controler on the door is fixed, and only for decoration purposes.
• For extra safety, your stove has been fitted with a removable handle. When not in use the handle can be stored using the lug behind the right leg of the stove

Lighting and loading intervals
When first lighting the stove, a large volume of air is needed. When the stove is cold, you should leave the door open an inch or two for the first few minutes and open the primary air supply completely. While the door is open, do not leave the stove unattended.
To form a reasonable bed of ash on the floor of the stove, you should use 5-6 inches thickness (2-4 pound) of dry kindling at the initial lighting. Always maintain a 1-1,5 inch (2-3 cm) layer of ash on the floor of the combustion chamber at all other times

1. We recommend using the “top-down” method to light your wood-burning stove. It is the most environmentally- friendly method of lighting. Use two firelighters and approx. 2-4 lbsof dry kindling sticks to quickly create a glowing layer of wood. Place the firelighters directly under the top layer of kindling sticks.This minimizes soot formation on the glass. Soot formation on the glass is often caused by too vigorous burning in contact with cold surfaces. If you avoid the formation of soot when lighting the fire and build up a layer of hot embers, you will have minimal soot formation when getting the fire burning again later.
2. The air supply must be fully open. Move the air controller handle all the way down. Light the fire.
3. After lighting, partially close the door, leaving it open an inch or two to allow in plenty of combustion air.
4. When the chimney is warmed through after 5-10 minutes, the door should be closed. A suitable ember bed will be formed after a further 15-20 minutes.
5. When ready to reload, use a poker to spread the ember across the firebox floor, bringing plenty towards the front of the stove.
6. Lay three pieces of wood onto the embers. Leave half an inch (1 cm) or more between each piece. Place the ends of your logs towards the opening, but not too close to the front. Each wood logs should be approx. 10-12’’ in length and weigh about 2 lb.
7. Close the door. Leave the primary air supply fully open.
8. After a few minutes, adjust the primary air supply to suit your heating requirements. For a medium burn, leave the air controller handle midways between closed (horizontal position) and fully open (handle all the way down)
9. Anticipate each refueling, remembering to add a modest layer of wood while there are still plenty of live embers, Repeat steps 5-8.

Do not for any reason attempt to increase the firing of your heater by altering the air control adjustment range outlined in these directions.
Warning:
Fireplace stoves must never be left unattended with doors open.
If the door is left partly open, gas and flame may be drawn out of the fireplace stove opening, creating risks from both fire and smoke. We recommend that you fit a smoke detector in the room where the stove is installed.
DO NOT OVERFIRE THIS HEATER. Overfiring may cause a house fire, or can result in permanent damage to the stove. If any part of the stove glows, you are overfiring.

• The maximum recommended weight of wood fuel per load is 2.5 kg/h/5.5Ibs (approx 3 split logs).
• Under normal firing, the average flue temperature in the stove pipe, measured 20 cm above the stove, is approx. 300° C (550°F). The maximum flue temperature in the stove pipe must not exceed 450° C (750°F). If the flue temperature exceeds 450°C (750°F), it is considered as over firing and may cause premature wear and tear of the stove.
• To help gauge the correct running temperature of your stove, we recommend you use the Morsø Flue Gas Thermometer (part # 62901200). The Flue Gas Thermometer magnetically attaches onto the stove pipe approx 20 cm (8”) above the stove’s top plate and measures the surface temperature of the stove pipe. Please see your authorized Morsø Dealer for availability.

Rules of woodburning
If you want less heat, put fewer logs on the stove and reduce the amount of air. It is still important to maintain a good layer of embers.

• Less heat – less wood – less air
• Greater heat – more wood – more air
• Soot deposits will settle on the glass if the stove is run too slowly or if your wood is not well seasoned.

Wood stove efficiency

• The 3100 B series has a High Heating Value (HHV) efficiency rate of 68%, when tested by CSA B415
• There are, however, aspects of efficiency that you should be aware of to get the most from your stove. Operation habits and fuel moisture can have a significant effect on efficiency. Poorly seasoned wood having a higher than optimum moisture content can reduce the amount of energy transferred to the living area as a result of the energy expended to evaporate the excess fuel moisture for the wood to burn. Operational habits – such as not building a robust kindling fire to readily ignite the larger fuel pieces – can result in an inefficient, smoldering fire. Additionally, most modern wood heaters’ optimum performance and efficiency are at the medium to medium-low burn rates.
• The location of the stove can also have a significant effect on heating efficiency, primarily regarding the distribution of the heat. For example, a wood heater centrally located in an open living area, will likely provide better circulation of heat than will a stove located in a room adjacent to larger living area

Draft conditions
If smoke or fumes come out of your stove when lightning up and reloading, or if the fire simply will not respond, a poor draft is almost certainly to blame. (In a very few cases, there may be insufficient fresh air getting into the room – see installation advice section 1.5). Take advice from your stove supplier on how best to upgrade your flue system to improve draft.

Draft
The draft in the chimney is the result of the difference between the high temperature in the chimney and the cooler temperature outside. Other factors that determine whether sufficient negative pressure can be produced to create a draught include the length and insulation of the chimney, and wind and weather conditions.

• The draft will be reduced when:
  • The temperature difference is too low, e.g. in connection with a poorly insulated chimney.
• If the chimney is cold, it may help to light (burn up) a rolled-up newspaper in the chimney’s cleaning door.
  • The outside temperature is too high, e.g. during the summer.
  • There is no wind.
  • The chimney is not tall enough, with the result that it sits in the lee of the roof surface or tall trees.
  • These conditions are also associated with the greatest risk of smoke coming back down the chimney.
  • Air is entering the chimney in undesired places, e.g. through cracked joints or leaks in the cleaning door or the flue pipe.
  • Unsealed, unused fireplaces are connected to the chimney.
  • The flue pipe and chimney are clogged up with soot due to inadequate cleaning.
  • The house is too tightly sealed (please see the section on Fresh air supply).
• A good draft is achieved when:
  • There is a big difference between the temperature in the chimney and outside, i.e. when the need for heating is greatest.
  • The weather is clear and there is a good wind.
  • The chimney is of the proper height, i.e. Minimum 12 ft.above the stove, and clear of the spine of the roof.

On the other hand, overly strong draft can also cause a different set of issues such as excessive temperatures and short burn times

Maintenance

This wood heater needs periodic inspection and repair for proper operation. It is a gainst federal regulations to operate this wood heater in a manner inconsistent with operating instructions in this manual
When perfoming maintenance on your stove, always protect yourself, using safety goggles and gloves

Exterior Maintenance

• The stove surface is painted with heat-resistant Senotherm paint. It is best kept clean by vacuuming with a soft brush attachment or by wiping with a lint-free cloth.
• Over a period of time, the painted surface may become slightly grey. A can of Morsø touch-up spray paint should be available from your stove supplier. This can be applied – in accordance with the instructions – in just a few minutes. When first firing after touching up, the stove will give off a slight smell as the paint cures. Make sure to ventilate the room well during this phase.

Internal maintenance

Glass
If the stove is generally run at the correct temperatures, there should be little or no dirt on the glass. If dirt does settle during lighting, most will burn off as temperatures increase.For heavier deposits that will not burn off, use Morsø glass cleaner, applied when the glass is cold, in accordance with the instructions. Never use abrasive cleaners on the glass surface.

Reasons for dirty glass

• Fuel too wet
• Logs too large or not split
• Combustion temperatures too low

Do not clean the glass while hot Replace broken glass immediately. Do not operate your stove if the glass in the door is damaged

If you need to replace the glass, it should be replaced with the high temperature ceramic class supplied by Morsø, contact your Morsø dealer.

Installing the glass
Never install the glass when the stove is in function.

Ceramic glass replacement

Ceramic glass cannot be recycled because it has a higher melting point that ordinary glass. If ceramic glass is mixed with ordinary glass, the raw material is spoiled, and the reclaiming process may be halted. Take care that the ovenproof glass does not end up among ordinary recycled waste. That will be a great benefit to the environment.
Note : Should be handed in to a recycling station as ceramic glass.

1. Lift the door off its hinges an place face-down on a sheet of cardboards or other non abrasive fabric. The door is removed by loosening the 2 screws with a hexagon box wrench by the hinges.
2. Unscrew the bolts that secure the glass. (In the event that a bolt sheers off when being unscrewed, remove the remaining body of the bolt by drilling down its cnetre with 1/8 inch high speed steel drill bit. Smaller drill bits may be successful, but do not use a lager bit. Make sure the bit stays away from the edges of the bolt – this may damage the thread in the cast iron).
3. Remove the old ceramic gaskets and clean up the surface underneath with wire wool or emery paper to remove loose particles.
4. Place the new gasket material in position around the perimeter of the window area, making sure to pinch them to the length in such a way that they make a continuous seal. Leave no gaps.
5. Place the new glass in position on the strips and screw home the fresh bolts and fitting by hand.
6. Finally, give each of the bolts an extra half turn or so. The glass should held tight enough by that cleaning will not dislodge it. Do not over-tighten the bolts as this may put excessive pressure on the glass, resulting in cracking – important!

To reduce the risk of breaking the glass, avoid striking the glass or slamming the door.

Internal service parts

• The flame-path equipment – consisting of the ashpan, grate, firebricks, glass, baffle and flue collar – are subject to the extremes of heat produced by the fire. From time to time, one or other of these parts may need replacing as a matter of routine maintenance.
  NOTE : The flame-path equipment, the ceramic rope and the paint finish are not covered by guarantee.

• All of these service parts can be bought from your Morsø dealer, and we recommend that damaged parts are replaced as soon as possible to avoid collateral damage.

• The grate may be replaced by lifting it by its left hand edge and twisting it backwards. Dislocate the riddling arm from the grate by feel from beneath the floor of the firebox. If you find this difficult for any reason, raising the rectangular grate surround casting may help.

• Should the baffle be distorted by an overfire, the stove will still function, although its efficiency may be compromised. Replace it as soon as possible. The rear casing is removed (four bolts).

• Remove these and withdraw the baffle from the firebox (this may be easier if the firebricks are first removed).

• Before replacing the baffle, scrape out the old fire furnace and replace with new to make an effective seal.

Reasons for fast internal wear and tear

• Persistent heavy firing
• Soot and ashes left to accumulate

Ceramic Gasket
The gasket around the perimeter of the door may harden over a period of time. It should be replaced if it becomes difficult to close the door or if air starts to leak in around the perimeter of the door, causing the fire to become a little less controllable. A Morsø rope gasket kit is available from your stove supplier.

Cleaning the Stove and the Flue

Check for soot above the baffle plate and around the flue outlet every month or so to start with. If the stove suddenly becomes sluggish, check for a soot fall around the flue collar or in the flue/chimney. – at least once a year. Inspect every month.
Clean the flue/chimney – all the way from the stove to the flue terminal point above the house.
A good routine is to clean the flue after each heating season in any case, and inspect prior to the season to ensure that bird’s nests or other blockages have not ocurred during the off season.

Ash disposal
Empty the ashpan on a daily basis or as needed. Ash allowed to build up towards the underside of the grate will trap heat and could cause premature failure of the grate.

Empty the ashpan according to this procedure:

When the door is closed, the grate can be operated by means of the riddling bar. Open the front door, and use a shovel or poker to stir excess ash through the ash slots in the grate down into the ash pan. Remove the ash pan, making sure to keep it level.
Dispose the ash in a metal container with a tight fitting lid.
The closed container of ashes should be placed on a noncombustible floor or on the ground, well away from all combustible materials, pending final disposal. If the ashes are disposed of by burial in soil or otherwise locally disperded, they should be retained in the closed container until all cinders have thoroughly cooled.
Return the ash pan to its original position in the stove, and close.

Caution:

Never empty a stove in operation.
Never use your household or shop vacuum cleaner to remove ash from the stove; always remove and dispose of the ash properly.

Creosote – formation and need for removal
When wood is burned slowly, it produces tar and other organic vapors, which combine with expelled moisture to form creosote. The creosote vapors condense in the relatively cool chimney flue of a slow-burning fire. As a result, creosote residue accumulates on the flue lining. When ignited this creosote makes an extremely hot fire. When burning wood, inspect the chimney connector periodically to determine if a creosote buildup has occurred.

Chimney sweeping

• Inspect the system regularly during the heating season as part of a regular maintenance schedule. To inspect the chimney, let the stove cool completely.
• Then, using a mirror, sight up through the flue collar into the chimney flue. If you cannot inspect the flue system in this fashion, the stove must be disconnected to provide better viewing access.
• Clean the chimney using a brush the same size and shape as the flue liner. Run the brush up and down the liner, causing any deposits to fall to the bottom of the chimney where they can be removed through the clean-out door.
• Clean the chimney connector disconnecting the sections, taking them outside, and removing any deposits with a stiff wire brush. Reinstall the connetor sections after cleaning, being sure to secure the joints between individual sections with sheet metal screws.
• If you cannot inspect or clean the chimney yourself, contact your local Morsø Dealer or a professional chimney sweep.

If you do experience a chimney fire, act promptly and:

1. Close the air control.
2. Get everyone out of the house.
3. Call the Fire Department.

Annual maintenance

Before the heating season, perform a thorough cleaning, inspection and repair:

• Thoroughly clean the chimney and chimney connector.
• Inspect the chimney for damage and deterioration. Replace weak sections of prefabricated
• chimney. Have a mason make repairs to a masonry chimney.
• Inspect the chimney connector and replace any damaged sections.
• Check gasketing for wear or compression, and replace if necessary.
• Check the glass for cracking; replace if needed.
• Check door and handles for tightness. Adjust if needed

ALWAYS USE ORIGINAL MORSØ SPAREPARTS

Leaving the stove for extended periods

Important:

• If the stove is to be left unused for any period of time, clean it out thoroughly and leave the spinner slightly open to allow airflow. Make sure that the flue does not allow rainwater to come anywhere near the stove; install a chimney cap, but do not block off the flue completely.
• These measures should ensure there is a slight movement of air through the stove, and that the body of the stove remains dry, right into the corners.
• Any ash left within an unfired stove can attract moisture like blotting paper. If moisture is allowed to settle within the stove, rust will form. Rust expands as it takes a grip. This can lead to undue pressure on the stove joints, and this in turn may result in damage to the stove.
  NOTE : It is best to thoroughly clean the stove after the heating season has concluded. Adding a dessicant, such as kitter litter, into the ash pan helps absorb moisture during the summer months. Be sure to remove this prior to the heating season.

Thank you for buying a Morsø stove

• We hope you have many years of carefree warmth in its company. Some initial experimentation with loading and running techniques will decide your normal routine. If you have any problems after this short learning phase, please refer to your stove dealer.
• Should they be unable to help for any reason, please contact us in writing at the address on the front of this publication.
• We highly recommend lubrication of hinges and closing mechanisms once per year or as needed, not only to ensure smooth functioning and longevity, but also to mitigate wear and tear.
• We recommend copper grease as a lubricant or another equally heat-resistant grease.

Parts diagram

A Parts diagram for model Morsø 3112 B

B Parts diagram for model Morsø 3142 B

Parts list for model Morsø 3112B & 3142B

Parts list for model Morsø 3112B & 3142B

Guarantee Product Registration

MORSØ 10 YEAR GUARANTEE CERTIFICATE

Behind every Morsø stove is more than 160 years of dedicated stove design and manufacturing experience. Quality control has always been at the heart of the production process and detailed measures have been put into place at all key stages of the build. Accordingly, provided that the stove has been supplied by an authorised Morsø dealer, Morsø will offer a 10-Year Manufacturers Guarantee against manufacturing defect to any of the main exterior body parts of its stoves.
Read more about ”Morsø 10 years guarantee/product registration card” and REGISTER your new Morsø stove online:
https://morsoe.com/us/customer-service/warranty-registration

IMPORTANT!
How to heat safely for the environment and yourself!

• Use only dry wood
  Use only dry (max. 20% moisture content) and untreated wood. The fuel must be split and 8 – 12 cm thick.

• Light
  Light with dry kindling (use 1 – 2 kg). Leave the door ajar and stay close to the stove during the lighting phase.

• Good layer of embers
  Be certain to have a good layer of embers before refilling. The wood should light within 2 minutes. If the logs do not ignite it may, in an extreme case, cause the flue gases to ignite which may pose a risk to material damage or personal injury.

• Refuelling
  When refuelling use 2 – 3 pieces of wood – no more than 2 – 2.5 kg.

• Ensure adequate air I.e. clear and yellow flames.

• Never burn overnight

MORSØ JERNSTØBERI A/S . DK-7900 NYKØBING MORS
E-Mail: info@morsoe.com ·
Website : www.morsoe.com

References

• Morsø Jernstøberi | Originalt dansk design siden 1853
• Warranty registration

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>