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Rocks sold separately. You will need to order 2 boxes (20kg each) of rocks to go with this heater.
You will need to order a North American chimney adapter (4″ to 6″) for this product.
Need help finding the right heater for your sauna? Use our sauna calculator here.
$1,080.95
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Harvia M3 SL
SL and Boiler stoves – Ease of use reaches a new level.
The Harvia M3 SL allows users to conveniently heat their sauna from another room or outside the building. You can easily change the door’s opening direction, making these stoves more user-friendly. The SL and Boiler stoves deliver an excellent bathing experience in small and medium-sized saunas. You can connect Boiler stoves to a separate water tank for added functionality.
- Harvia equips all through-the-wall heating stoves and Boiler models with a glass door to enhance the ambiance. The adjustable legs in the 20-series simplify installation, ensuring the stove remains level even on inclined floors.
Technical Information
| Model | WKM3SL |
| Output kW | 16,5 |
| Sauna room min. cu ft (m3) | 212 (6) |
| Sauna room max. cu ft (m3) | 459 (13) |
| Sauna room height min. in (cm) | 74 7/8 (190) |
| Stone capacity max. lbs (kg) | 66 (30) |
| Dimensions width in (mm) | 15 3/8 (390) |
| Dimensions height in (mm) | 28 (710) |
| Dimensions depth in (mm) | 17 + 8 5/8 (430 + 220) |
| Weight lbs (kg) | 110 (50) |
| Safety distance to sides and back, masonry walls E, in (mm) | 2 (50)* |
| Safety distance to sides (B) and back (C), walls and benches made of inflammable materials, in (mm) | 11 7/8 (300) |
| Safety distance to front (D) in (mm) | 11 7/8 (300) |
| Safety distance from upper surface to ceiling A min. in (mm) | 51 1/8 (1300) |
| Fire chamber cover in (mm) | 3/16 (5) |
| Location of smoke outlets on top: from rear edge to centre of hole in (mm) | 4 3/4 (120) |
| Diameter of smoke outlet in (mm) | 4 1/2 (115) |
| * Leave 2″ (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 4″ (100 mm) between the stove and walls for the air circulation. |
| Weight | 112 lbs |
|---|---|
| Dimensions | 16.5 × 29 × 30 in |
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The water tank of the pipe model (22 l) mounts directly onto the stove. The pipe-mounted water heater draws heat energy from the hot combustion gases of a wood-burning stove. These gases pass through the smoke pipe in the heater and continue to the chimney.
Since the pipe model heats water efficiently and quickly, it often reaches boiling point when the stove is in use. To prevent boiling, remove some warm water and add cool water instead.
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