Harvia M3 Wood Burning Stove Kit w/ Chimney, Sheath, Floor Protection and Stones
Harvia M3 16.5 kW wood-burning stove with the WHP1500 chimney, WL450 sheath, WL100 floor bedding and 88 lb of stones, for 212–459 cu ft rooms
In stock
Estimated delivery
7–12 days after you order
- Stove, chimney, sheath, floor bedding and stones in one order
- Two 44 lb boxes of AC3020 stones: 88 lb for the M3's 66 lb load
- WL450 sheath cuts side and rear distances to 2"
- Description
- What's Included
- Specifications
- Installation
- Documents
- Warranty
What is the Harvia M3 kit with chimney, sheath, floor protection and stones?
The Harvia M3 full kit (the M3 with chimney, sheath, floor protection and stones) combines five parts: the Harvia M3 (WKM3) 16.5 kW wood-burning sauna stove, Harvia's WHP1500 stainless-steel chimney kit, the WL450 protective sheath, the WL100 protective bedding and two 44 lb boxes of Harvia AC3020 4–6" stones. It is for sauna rooms of 212 to 459 cu ft. The kit price is the sum of the five parts; ordering them together means the chimney, the floor and wall protection and the stones are already matched to the stove.
The M3 stands on the floor, has a black-painted steel body with a chrome front plate, a glass door and an ash box, and holds up to 66 lb (30 kg) of stones. The WL450 sheath cuts its side and rear distances to combustible walls to 2" (50 mm), and the WL100 bedding protects a tile or combustible floor. It needs no electrical connection.
Harvia M3 full kit key features
- Harvia M3 stove, 16.5 kW, for sauna rooms of 212–459 cu ft
- Harvia WHP1500 chimney kit: 59.1" insulated stainless-steel chimney plus a smoke pipe cut to length
- Harvia WL450 three-sided sheath: side and rear distances down to 2"
- Harvia WL100 protective bedding for a tile or combustible floor
- Two 44 lb boxes of AC3020 stones: 88 lb, more than the M3's 66 lb maximum
- Stove CE marked (EN 15821); chimney CE marked to EN 1856-1
The M3 kit with chimney and stones has the stove, chimney and stones only, and the black M3 kit with chimney extension has the same parts with a black chimney and an extension. The Harvia M3 is also sold on its own, and the Harvia wood-burning stove collection has every Harvia wood-burning stove Topture sells.
What's included in the Harvia M3 full kit?
Harvia M3 stove (WKM3)
- Harvia M3 wood-burning sauna stove (WKM3) with its glass door and ash box
- Installation and user manual
Harvia WHP1500 chimney kit (stainless steel)
- Stainless-steel insulated chimney WHP1500, 59.1" (1.5 m), with a 39.4" (1.0 m) smoke pipe cut to length
- Rain cap, and a rubber rain flange for roofs pitched 10° or more
- Lead-through insulation, lead-through protector and ceiling flange
- Clamp and installation instructions
Harvia WL450 protective sheath
- Three-sided sheath for the Harvia M-series stoves, black steel
Harvia WL100 protective bedding
- Black-painted, aluminum-zinc-coated steel floor plate, 18.5 in × 26.2 in (470 × 665 mm), 2.4–3.0 in (60–75 mm) high
Harvia AC3020 stones
- Two 44 lb (20 kg) boxes, 88 lb in total, of Harvia AC3020 split-face olivine diabase stones, 4–6" (10–15 cm). The M3 holds up to 66 lb (30 kg), so some stones are left over
What you still need
- On a combustible floor: non-combustible floor protection in front of the stove door
- On a flat roof: the WHM24 rain flange, sold separately; the kit's rain flange suits roofs pitched 10° or more
- Installation of the chimney through the ceiling and roof, following Harvia's instructions and local regulations
Harvia M3 stove specifications
| Output | 16.5 kW |
|---|---|
| Sauna room volume | 212–459 cu ft (6–13 m³) |
| Dimensions | 15.4" W × 16.9" D × 28.1" H (390 × 430 × 715 mm) |
| Legs | Fixed; the M3 has no adjustable legs |
| Net weight | 99.2 lb (45 kg) |
| Stones | Up to 66 lb (30 kg) of 4–6" (10–15 cm) stones; the two 44 lb boxes of AC3020 in the kit cover it |
| Chimney connection | Top or rear, 4.5" (115 mm); chimney class T600 with a flue at least 4.3" (110 mm) across |
| Firewood | Up to 13.8" (350 mm) long, 3.1–5.9" (8–15 cm) across |
| Materials | Black-painted steel body (heat-resistant paint) with a chrome front plate; glass door |
| Electrical connection | None; wood-fired |
| Certification | CE marked (EN 15821) |
| Harvia part number | WKM3 (GTIN 6417659009423) |
| Warranty | 2-year manufacturer warranty; stones are not covered |
Harvia WHP1500 chimney kit specifications
| Chimney | 59.1" (1.5 m), double-wall, mineral-wool insulated, 8.66" (220 mm) outer diameter |
|---|---|
| Smoke pipe | 39.4" (1.0 m), single-wall, cut to length; joins the M3's 4.5" (115 mm) top opening |
| Roof | Pitched 10° or more; a flat roof needs the WHM24 rain flange, sold separately |
| Maximum total height | 16.4 ft (5.0 m) with WHP500 or WHP1000 extensions; vertical installation only |
| Clearance to combustibles | 3.94" (100 mm) from the insulated casing; 19.7" (500 mm) from the uninsulated smoke pipe |
| Below the ceiling | At least 16.9" (430 mm) of insulated chimney visible |
| Flue-gas temperature class | T600, up to 1,112°F (600°C) |
| Certification | CE marked to EN 1856-1 (T600 N1 D Vm-L20070 G100) |
| Material | Stainless steel (WHP1500) |
Harvia WL450 sheath and WL100 bedding in this kit
| WL450 fit | Harvia M1, M2, M3 and M3 SL stoves; three-sided |
|---|---|
| WL450 distances with the sheath | Sides and rear 2.0" (50 mm), front 11.8" (300 mm); sheath 1.2" (30 mm) from the wall |
| WL100 size | 18.5" W × 26.2" D (470 × 665 mm), 2.4–3.0" (60–75 mm) high |
| WL100 material | Aluminum-zinc-coated steel sheet, painted black |
How is the Harvia M3 full kit installed?
The Harvia M3 full kit goes in as two jobs. The M3 stands on the floor on its fixed legs, inside the safety distances below; the chimney's smoke pipe joins the stove's 4.5" (115 mm) top opening, and the insulated chimney passes through the ceiling with the included lead-through insulation and flange and out through the roof under the rain flange. Keep the insulated chimney at least 3.94" (100 mm) and the uninsulated smoke pipe at least 19.7" (500 mm) from anything that can burn, and leave at least 16.9" (430 mm) of insulated chimney visible below the ceiling. Harvia's manuals say local regulations apply and the stove cannot share a flue; they give the step-by-step installation, under Documents.
Does the Harvia M3 full kit need floor protection?
The Harvia M3 full kit includes the WL100 bedding a tile or combustible floor needs, but not the protection in front of the door that a combustible floor also needs. Harvia's M3 manual says a bare concrete floor at least 2.4" (60 mm) thick needs no protection, a tile floor needs protective bedding because the adhesives and waterproofing under tile do not resist the stove's heat, and a combustible floor needs the bedding plus non-combustible protection in front of the stove door.
Harvia M3 safety distances
Keep at least these distances between the Harvia M3 and anything that can burn.
| Top of the stove to the ceiling | 47.2" (1,200 mm) |
|---|---|
| Sides to combustible material | 9.8" (250 mm) |
| Rear to combustible material | 11.8" (300 mm) |
| Front to combustible material | 11.8" (300 mm) |
| To a masonry wall | 2.0" (50 mm) if air can circulate in front and at one side; 3.9" (100 mm) in a recess |
| Sides | 2.0" (50 mm) |
|---|---|
| Rear | 2.0" (50 mm) |
| Front | 11.8" (300 mm) |
| Sheath to wall | 1.2" (30 mm) |
The shorter distances apply only with the WL450 sheath fitted; without it, use the first table.
Does the Harvia M3 need a first firing?
Yes, outdoors. Harvia's manual says to fire the M3 once outside before its first sauna, until the paint on the stove stops smoking, and to load the stones only after it has cooled.
