HARVIA 150 SL Woodburning Sauna Stove Instruction Manual

HARVIA 150 SLWoodburning Sauna Stove

Specifications

• Product Name: Harvia Legend
• Models: 150, 240, 300, 150 SL, 240 SL, 240 Duo, 300 Duo
• Required Temperature Class of Chimney: T600
• Stone Quantity (max. kg): 120
• Weight (kg): 58-62 (SL)
• Steel Frame Diameter (mm): 200-260
• Depth (mm) + Fire Chamber Extension (mm): 75-95 (Duo)
• Diameter of Firewood (cm): 35

Product Usage Instructions

General
Choose the stove model carefully. A stove with too low output must be heated longer and more intensely, which will shorten the stove’s life span. The dealer or our factory representative can assist you in choosing the stove if needed.

Stove Parts

• Steel frame
• Stove body
• Rear connection opening
• Upper connection opening
• Soot opening
• Stove door
• Ash box
• Flange (only Legend 240 Duo/300 Duo)
• Fire chamber extension

Instructions for Installation and Use of Woodburning Stove

Declaration of Performance

Intended use| Multi firing sauna stoves fired by solid wood fuel| Harvia PL 12

40951 Muurame Finland

16

EN 15821:2010

---|---|---
The product conforms to the following| Products are tested in accordance to the methods described in the
standards| standard EN 15821:2010
Das Produkt erfüllt die folgenden| EN 15821:2010 beschriebe-
Standards|
Notified body| VTT, PL 1000, 02044 VTT, Finland (0809)
Gemeldete Stelle ()
| DoP09LG150| DoP10LG240| DoP11LG300| DoP12LG300D
---|---|---|---|---
Product type Produkttyp

Declared performance – Essential characteristic Erklärte Leistung – Wesentliche Merkmale

| Legend 150

(WK150LD)

Legend 150 SL

(WK150LDSL)

| Legend 240

(WK240LD)

Legend 240 SL

(WK240LDSL)

Legend 240 Duo

(WK240LDLUX)

| Legend 300

(WK300LD)

| Legend 300 Duo

(WK300LDLUX)

Fuel Brennstoffe| Wood Scheitholz| Wood Scheitholz| Wood Scheitholz| Wood Scheitholz
Fire safety| ****

p

| ****

p

| ****

p

| ****

p

– safety distances to combustible materials| 3.1.3.| 3.1.3.| 3.1.3.| 3.1.3.
| p| p| p| p
Surface temperature| p| p| p| p
Release of dangerous substances| NPD| NPD| NPD| NPD
Cleanability| p| p| p| p
Flue gas temperature*| 420 °C| 448 °C| 458 °C| 463 °C
Mechanical resistance| p| p| p| p
Sauna room heating output| 16 kW| 21 kW| 23 kW| 23,5 kW
– carbon monoxide emission at 13 % O2| p (5510 mg/m3)| p (8310 mg/m3)| p (9090 mg/m3)| p (9480 mg/m3)
– carbon monoxide emission (%) at 13 % O2

– CO-emission (%) 13 % O2

| p (0,44 %)| p (0,65 %)| p (0,72 %)| p (0,76 %)
– total efficiency| p (67 %)| p (67 %)| p (68 %)| p (68 %)
– flue draught| 12 Pa| 12 Pa| 12 Pa| 12 Pa
– ignition load| 2,7 kg| 2,9 kg| 3,0 kg| 3,0 kg
– refuelling loads| 3,2 kg| 5,2 kg| 6,0 kg| 6,4 kg
– ash box gap (after ignition phase)| 45 mm| 68 mm| 76 mm| 80 mm
Durability| p| p| p| p
Flue gas mass flow Rauchgasmassenstrom*| 14,5 g/s| 15,9 g/s| 16,4 g/s| 16,6 g/s

Stove door closed/ Tür geschlossenp Pass/Erfüllt

GENERAL

Choose the stove model carefully. A stove with too low output must be heated longer and more intensely, which will shorten the stove’s life span.
Please note that non-insulated wall and ceiling surfaces (such as brick, glass, tile and concrete surfaces) increase the output requirement of the stove. For every square meter of such wall and ceiling surface you should calculate an additional 1.2 m3 volume. If the sauna walls are made of massive log, the volume must be multiplied by 1.5. Examples:

• A 10 m3 sauna room with a brick wall 2 m high and 2 m wide is equivalent to a sauna room of approximately 15 m3.
• A 10 m3 sauna room with a glass door is equivalent to a sauna room of approximately 12 m3.
• A 10 m3 sauna room with massive log walls is equivalent to a sauna room of approximately 15 m3.

The dealer or our factory representative can assist you in choosing the stove if needed. You can also visit our website www.harviasauna.com for further details.

Stove Parts

• A. Steel frame
• B. Stove body
• C. Rear connection opening
• D. Upper connection opening
• E. Soot opening
• F. Stove door
• G. Ash box
• H. Flange (only Legend 240 Duo/300 Duo)
• I. Fire chamber extension

Burning
The stove has a special grate, which improves the burning process: the combustion air channels of the fire chamber lead part of the air above the fire to the upper part of the fire chamber (figure 2). This way, the flue gases also burn and generate heat.
Also the burning material ( 2.3.) and ignition method ( 2.5.) significantly affect the burning efficiency and the flue gas emissions.

INSTRUCTIONS FOR USE

Read the instructions carefully before using the stove.

Warnings

• Staying in the hot sauna for long periods of time makes the body temperature rise, which may be dangerous.
• Keep away from the stove when it is hot. The stones and outer surface of the stove may burn your skin.
• Never throw water on the stones when there are people near the stove, because hot steam may burn their skin.
• Keep children away from the stove.
• Do not let young, handicapped or ill people bathe in the sauna on their own.
• Consult your doctor about any health-related limitations to bathing.
• Consult your child welfare clinic about taking little babies to the sauna.
• Be very careful when moving in the sauna, as the platform and floors may be slippery.
• Never go to a hot sauna if you have taken alcohol, strong medicines or narcotics.
• Never sleep in a hot sauna.
• Sea air and a humid climate may corrode the metal surfaces of the stove.
• Do not hang clothes to dry in the sauna, as this may cause a risk of fire.

Preparing the Stove for Use
Perform the first heating procedure before taking the stove in use. The purpose of the procedure is to burn off protective paint from the stove body. This will cause the stove body to emit smoke.

1. If possible, heat the stove body outdoors until it stops emitting smoke. Install smoke pipes
   (if any) for draught. Let the stove body cool. Remove leftover paint mechanically e.g. with a wire brush and a vacuum cleaner.

2.  Install the stove according to installation instructions. Place the stones into the stove ( 2.4.).

3. Heat the sauna to a normal bathing tempera-ture. You should ensure good ventilation in the sauna room as the stove body may still emit smoke and smell. When the smoking stops, the stove is ready for normal use

Burning Material
Dry wood is the best material for heating the stove. Dry chopped firewood clinks when it is knocked together with another piece. The moisture of the wood has a significant impact on how clean the burning is as well as on the efficiency of the stove. You can start the fire with birch bark or newspapers.
The thermal value of wood differs from one type of wood to another. For example, you must burn 15 % less beech than birch to obtain the same heat quantity. If you burn large amounts of wood, which has a high thermal value, the life span of the stove will shorten!

Do not burn the following materials in the stove:

• Burning materials that have a high thermal value (such as chipboard, plastic, coal, brickets, pellets)
• Painted or impregnated wood
• Waste (such as PVC plastic, textiles, leather, rubber, disposable diapers)
• Garden waste (such as grass, leaves)
• Liquid fuel

Sauna Stones

• The stones should be 10–15 cm in diameter.
• Only proper stones meant for the specific purpose should be used as sauna stones. Peridotite, olivine-dolerite and olivine are suitable stone types. Stones found in nature may contain harmful substances, such as iron pyrite, and therefore should not be used.
• Wash off dust from the stones before piling them into the stove.

Piling of the sauna stones:

1. Align the steel frame and the stove body. Place a few stones between the stove body and steel frame so that the steel frame will not move during the placement of the stones.
2. Cover the stove body with stones. Place the stones in a dense layer between the stove body and steel frame. Direct heat radiation from the uncovered stove body can cause the surrounding structures to heat up to dangerous temperatures even outside the safety distances. Use stones that fit easily between the steel frame and the stove body.
3. Fill the upper part of the steel frame with stones. Place the stones sparsely. Do not form a high heap of stones above the frame.
4. Make sure that the stove body is not visible behind the stones after the stones have been placed. If necessary, pile stones more densely and/or add stones.

Heating the Stove
Before heating the stove make sure that there  are no unnecessary items in the sauna or in- side the stove’s safety distances. Extractor fans

Figure 4.
when operated in the same space as the stove, may cause problems.

1. Empty the ash box.

2. Place the firewood into the fire chamber, leaving enough room for the combustion air to flow between the firewood. Place the biggest firewood on the bottom and the smaller ones on the
   top. Use firewood with a diameter of 8–12 cm (consider the ignition load value, table 2). SL/Duo stoves: Place the firewood on the grate at back of the fire chamber. Avoid burning firewood in the fire chamber extension. Do not use excessively long firewood even though they would fit in the fire chamber.

3. Place the kindling on the top of the firewood. By starting the fire on the top of the firewood, fewer emissions are produced.

4. Fire the kindling and close the door. The amount of draught can be adjusted by opening the ash box. The stove is not intended for use with the stove door open.
   Note! The handles become hot while in use. Use the supplied tool for opening and closing the stove door and ash box (figure 5).

   • When heating the stove, it is generally a good idea to at first keep the ash box slightly open. This ensures that the fire starts burning properly.
   • Excessive draught will cause the stove body to become red-heated, which will shorten its life span considerably.
   • During bathing, and when the sauna room is already heated, the ash box can be closed to keep down the fire and decrease wood consumption. See the optimal ash box gap in table 2.

5. If necessary, place more firewood into the fire chamber when the ember is dying down. Use firewood with a diameter of 12–15 cm. It takes only a couple of pieces of wood to maintain the bathing temperature (consider the refuelling loads value, table 2).

Prolonged, intense heating may cause risk of fire!

• Excessive heating (several full loads in a row, for example) will make the sauna room, stove and the chimney overheat. Overheating shortens the stove’s life span and may cause risk of fire.
• A good rule of thumb is that temperatures of over 100 ºC are too high in a sauna.
• Observe the correct wood quantities noted in the heating instructions. Let the stove, chimney and sauna room cool down if necessary.

Sauna Water
The water that is thrown on the stones should be clean household water. Make sure the water is of high enough quality, because water containing salt, lime, iron or humus may prematurely corrode the stove. Especially seawater will corrode the stove very rapidly. The following quality requirements apply to household water:

• humus content <12 mg/litre
• iron content <0.2 mg/litre
• calcium content <100 mg/litre
• manganese content <0.05 mg/litre

Throw sauna water on the stones only. If you throw water on the hot steel surfaces, they may blister due to the large temperature variation.

Maintenance Stove

• The ash box should always be emptied before heating the stove so that the combustion air that is lead through the box would cool off the fire grate and lengthen its life span. Get a metal container, preferably standing model, to put the ash in. As the removed ash may include hot embers, do not keep the ash container close to combustible material.
• Soot and ashes gathered in the smoke canals of the stove should be removed occasionally through the soot openings ( 1.1.).
• Due to large variation in temperature, the sauna stones disintegrate in use. Therefore, they should be rearranged at least once a year or even more often if the sauna is in frequent use. At the same time, any pieces of stones should be removed from the stone space, and disintegrated stones should be replaced with new ones.
• Wipe dust and dirt from the stove with a damp cloth.

Chimney

• The chimney and connection pipes should be swept at regular intervals and especially if the stove has not been used in a long time.
• Due to incomplete burning of fuel and failure of sweeping the chimney, the soot build-up in the flue may ignite. Actions to be taken in case of a chimney fire:

1. Close the ash box, stove door and damper plate (if installed).
2. Contact local fire authority.
3. Do not try to extinguish fire using water.
4. After a sootfire, a chimney sweeper must check the stove and the flue before use.

Troubleshooting
There is no draught in the flue. Smoke comes into the sauna.

• There are leaks in the flue connection. Seal the connection ( 3.2.2.).

• The brick flue is cold.

• There is low pressure caused by an extractor fan or another device in the room. Make sure there is enough air to compensate.

• Several fireplaces are used at the same time.
  Make sure there is enough air to compensate.

• The ash box is full.

• The smoke canals of the stove are blocked ( 2.7.).

• The flue connection pipe is too deep in the chimney ( 3.2.2.).
  The sauna does not heat up.

• The sauna is too big in relation to the stove’s heating capacity (see table 1).

• There is lots of non-insulated wall surface in the sauna ( 1.).

• The burning material is moist or its quality is otherwise low ( 2.3.).

• The flue does not have a good draught.

• The smoke canals of the stove are blocked ( 2.7.).
  The stove stones do not heat up.

• The sauna is too small in relation to the stove’s heating capacity ( 1.).

• The flue does not have a good draught.

• The burning material is moist or its quality is otherwise low ( 2.3.).

• The smoke canals of the stove are blocked ( 2.7.).

• Check the stone placement ( 2.4.). Remove the small pieces of stone and stones that are less than 10 cm in diameter from the stone space.
  Replace the disintegrated stones with large and undamaged ones.

• The stove emits smell.

• See section 2.2.

• The hot stove may emphasize odours mixed in the air that are not, however, caused by the sauna or the stove. Examples: paint, glue, oil, seasoning.

Wooden surfaces of the sauna room blacken

• It is perfectly normal for the wooden surfaces of the sauna room to blacken in time. The blackening may be accelerated by sunlight, heat from the stove, protective agents on the walls (protective agents have a poor heat resistance level), fine particles disintegrating from the sauna stones which rise with the air flow and smoke that enters the sauna, for example, when adding firewood.

INSTRUCTIONS FOR INSTALLATION

Before Installation
Before installing the stove make sure that all safety distance requirements are fulfilled. There shall be no electrical devices, wires or inflammable materials within the established safety distances around the stove.

• All local regulations, including those referring to national and European standards need to be complied with when installing the appliance.
• The stove is not suitable for installation in a shared flue system.
• The local fire authorities in charge of approving the installations can provide more detailed information about fire safety regulations.

Ventilation of the Sauna Room
The ventilation of the sauna room should be arranged as follows:

Gravity exhaust ventilation (figure 6)

• The fresh air inlet must be placed close to the floor near the stove and
•  its outlet should be as far as possible from the stove and near the ceiling. The stove itself circulates air effectively; the purpose of the outlet is mainly to remove moisture from the sauna after bathing.

Mechanical exhaust ventilation (figure 7)

• The fresh air inlet must be approx. 500 mm above the stove and
• the outlet should be close to the floor, forexample, below the bench.

Protecting the Floor See figure 8.

• A. Concrete floor without tiles. The stove can be installed on a concrete floor without any specific safety measures, if the concrete is at least 60 mm thick. Make sure that there are no wires or water pipes in the concrete cast below the stove.
• B. Tile floor. The floor glues and plasters and waterproof materials used below the tiles are not resistant to the heat radiation of the stove. Protect the floor with the Harvia protective bedding ( 3.5.) or similar heat radiation protection.
• C. Floor made of inflammable material. Protect the floor with the Harvia protective bedding ( 3.5.). If the floor in front of the stove door is made of inflammable material, install floor protection made of nonflammable material.

The stove shall be installed on a floor with an adequate load-bearing capacity. If the existing floor does not meet this prerequisite, suitable measures (e.g. load distributing plate) shall be taken to achieve it.
Light-coloured floor materials will become dirty from the ash, particles of stone and metal flakes that fall from the stove. Use floor coverings made of dark materials and dark joint grouts.

Safety Distances
Incorrect stone placement can cause the surrounding structures to heat up to dangerous temperatures even outside the safety distances. The defined safety distances are valid only when the stones have been placed as described in section 2.4.
See figure 9.

• Ceiling. The minimum safety distance between the stove and the ceiling (A).
• Walls and benches made of inflammable mate-rials. The minimum safety distances to inflammable materials: on either side (B), behind the stove (C), in the front (D).
• Masonry walls (E). Leave 50 mm between the stove and walls, provided that the air can circulate in front and to one side of the stove. If the stove is installed in a recessed wall, leave 100 mm between the stove and walls for the air circulation.

Legend Protection Supplies

• Legend protective bedding WL100.
• Legend protective sheath WL200. A protective sheath to be attached to the stove. Equivalent to a single protective cover. Figure 10.
• Legend smoke pipe cover WL300. Installed around the smoke pipe and filled with stones. Suits both straight and angled smoke pipes. Figure 10.

Installing the Stove
Adjustable Legs
The adjustable legs enable the stove to be installed firmly on an inclined floor. The adjustable range is 0–30 mm. Unscrew the adjustable feet to an extent that allows them to be adjusted using a wrench (17 mm) when the stove is in position.

The adjustable feet could scratch the floor surface if the stove is moved on the floor.

Connecting the Stove to a Masonry
Flue Make an opening in the fireproof wall for the flue connection. Notice that the opening has to be at the correct height, if you intend to use, for instance, a protective bedding. The hole should be slightly larger than the flue connecting pipe. A suitable gap around the connection pipe is ca. 10 mm. It is advisable to round off the inner corners of the flue opening to ensure that the combustion gases can flow freely to the flue. Additional accessories are available to make the installation easier ( 3.5.).
Connecting the stove to a masonry flue via the rear connection opening (figure 11)

1. Remove the removable bars (Legend 150:
2. pcs, Legend 240/300: 2 pcs).
3.  Attach the flue connection pipe to the rear connection opening. Ensure that the pipe fits tightly in place.
4. Push the stove into place. Do not block the flue by pushing the flue connection pipe too far into the flue. If necessary, shorten the pipe.
5. Seal the flue connection pipe to the opening in the fireproof wall, for example, by using fireproof mineral wool. Make sure that the flue connection is tightly sealed. Add more fireproof mineral wool if necessary.

Connecting the stove to a masonry flue via the upper connection opening (figure 12)
You will need an angled smoke pipe (45° or 90°) for the upper connection.

1. Move the blocking plug from the upper connection opening on the rear connection opening.
2. Bend the holding springs of the plug to the sides through the upper connection opening so that the plug tightly stays in place.
3. Attach the flue connection pipe to the upper connection opening. Ensure that the pipe fits tightly in place.
4.  Push the stove in place. Do not block the flue by pushing the flue connection pipe too far into the flue. If necessary, shorten the pipe.
5. Seal the flue connection pipe to the opening in the fireproof wall, for example, by using fireproof mineral wool. Make sure that the flue connection is tightly sealed. Add more fireproof mineral wool if necessary.

Connecting the Stove to a Harvia Steel Chimney
A CE-marked Harvia steel chimney can be used to remove combustion gases. Its smoke pipes are made of stainless steel and the chimney has been insulated for fire safety. The chimney has a round cross section. The smoke pipe diameter is 115 mm, and the outer casing is 220 mm.

1. Move the blocking plug from the upper connection opening on the rear connection opening.
2. Bend the holding springs of the plug to the sides through the upper connection opening so that the plug tightly stays in place.
3. Connect the steel chimney’s smoke pipe to the upper connection opening of the stove. Ensure that the smoke pipe fits tightly in place. See the detailed instructions in the steel chimney’s installation instructions!

If a protective cover is used around the stove, the insulation of the chimney must start from the same level as the top surface of the protective cover or underneath it.
SL/Duo: The nonflammable wall through which the stove is installed must extend up to the roof. NOTE! Does not apply to thin nonflam-mable wall structures that allow to install steel chim-ney far enough from the wall (for example Harvia Duo glass wall). The safety distance between the inflammable structures and the chimney outer casing must be minimum 100 mm.

Legend 150 SL, 240 SL
Installing the Stove in an opening in a concrete or brick wall
The stove is installed in an opening in a concrete or brick wall. The minimum width of the opening is 220 mm and the minimum height from the floor is 390 mm. The maximum wall thickness is 150 mm. Figure 13.

• Detach the hinge pin and door from the stove.
• Push the fire chamber extension through the open-ing far enough to allow attachment of the door.
• If the floor in front of the stove door is made of inflammable material, install floor protection made of nonflammable material.

Legend 240 Duo, 300 Duo
Installing the Stove in an opening in a concrete or brick wall
The stove is installed in an opening in a concrete or brick wall. The minimum width of the opening is 405 mm and the minimum height from the floor is 485 mm. The maximum wall thickness is 120 mm. Figure 14.

• Pull the front flange out.
• Push the fire chamber extension through the opening far enough to allow attachment of the flange and door.
• Pull the stove back to make the flange press against the wall and door.
• If the floor in front of the stove door is made of inflammable material, install floor protection made of nonflammable material.
• NOTE! Dimensions of the opening changes, if you use the protective bedding.
• Installing the Stove with Harvia Duo Glass Wall The stove is installed according to the instructions for installation which are delivered with Harvia Duo glass wall.

Changing the Opening Direction of the Stove Door
The door to the firing chamber can be installed to open either to the right or to the left. See figure 15.

Accessories

• A. Harvia steel chimney WHP1500. 3.2.3.
• B. Water heater VL22l. Installed on the top of the upper connection opening. When a protective sheath or other protection is used that is not large enough to protect the inflammable materials around the stove from the heat radiation of the pipe between the water heater and smoke flue, you must install a radiation cover around the pipe.
• C. Radiation cover WZ020130. Installed around the smoke pipe. The safety distance from inflammable materials of an unprotected smoke pipe is 500 mm. When the radiation cover is used, the safety distance is 250 mm.
• D. Connecting pipe WZ020ST. Lifts the water heater to the right level (Legend 240 and 300 models).
• E. Angle smoke pipe. Different models.
• F. Masonry connector WZ011115. Connected to the flue opening, does not require other seals. The inner side already has a seal.
• G. Lead-through flange for smoke pipe WZ020115. Covers the edges of the flue opening and the sealing in the wall. Made of stainless steel. Consists of two parts to make it useable with differently inclined smoke pipes.
• H. Legend protective bedding WL100. 3.1.4.
• I. Legend protective sheath WL200. 3.1.4.
• J. Legend smoke pipe cover WL300. 3.1.4.

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