HARVIA PRO 20 SL Sauna Stove w/ Exterior Feed

Description

The HARVIA PRO 20 SL model is designed for people who want to conveniently heat their sauna from another room or outside the building. The PRO 20 SL is placed in the sauna room and your firewood is loaded into the fire chamber from the other side of the wall. While someone is enjoying the heat in the sauna room another bather can be relaxing in the next room while appreciating the glow of the flames behind the cast-iron-framed glass door.  

With the HARVIA PRO 20 SL model, indulge in the seamless fusion of performance and ambiance meticulously crafted to invigorate sauna sessions in medium-sized saunas. This wood-burning stove is purposefully designed for discerning bathers, harmonizing functionality with aesthetic allure.

At its essence, the HARVIA PRO 20 SL features a large stone compartment, ensuring an ample supply of sauna stones. These stones not only enhance steam output but also intensify radiant heat, enveloping you in a cocoon of warmth and relaxation. The cast-iron-framed glass door offers a captivating view of the internal fire, creating an enchanting atmosphere that elevates your sauna experience.

Durable construction is a defining feature of the HARVIA PRO 20 SL, with a robust fire chamber cover ensuring both longevity and efficient heating. The stove is also equipped with adjustable feet, providing flexibility during installation. These feet enable you to fine-tune the height of the smoke outlet, seamlessly integrating the stove into your sauna space.

From the perfect union of design and functionality to its resilient construction, the HARVIA PRO 20 SL Wood-Burning Stove becomes your gateway to rejuvenating sauna sessions that transcend the ordinary. Immerse yourself in the warmth and ambiance of this exceptional heater, where performance gracefully meets enchantment, and elevate your sauna experience to unprecedented heights.

The HARVIA PRO product line offers a selection of heaters specifically designed for medium-sized to larger saunas, including those with spacious log interiors. Within this PRO sauna range, you'll find heaters equipped with a water container and wall-installed options. HARVIA's PRO sauna heaters are celebrated for delivering high-quality, enduring heat that swiftly warms up the sauna, ensuring an exceptional sauna experience.

In the standard HARVIA PRO models, the stainless steel front and top facilitate easy cleaning, while the black-painted sides and the mesmerizing fire behind the glass door create a delightful sauna ambiance. For added safety and convenience, the opening direction is adjustable. These PRO heaters are not only easy to install but also simple to maintain, with features like adjustable feet for stability, separate maintenance doors in the combustion ducts, and a convenient ash box for easy emptying.

The traditional HARVIA heater models, including PRO 20, PRO 26, and PRO 36, cater to medium-sized or larger saunas. Models with a water container (PRO 20 ES, PRO 20 LS, PRO 20 RS) efficiently heat water for multiple sauna users to enjoy bathing.

The PRO 20 SL, PRO 20 DUO, and PRO 36 DUO sauna heater models, are through-the-wall heaters as they allow wood-feeding from the adjacent room or outside of the sauna. While a bather enjoys the heat in the sauna room, another bather can be relaxing in the next room while appreciating the glow of the flames with the fireplace-like ambiance behind the cast-iron-framed glass door. These heaters are user-friendly and facilitate keeping a clean sauna room.

The Harvia Pro product line offers a diverse selection of wood-burning heaters to meet every requirement. With a myriad of accessories and versatile connectivity, these heaters provide a broad spectrum of installation options, ensuring a perfect solution for every sauna enthusiast.

Features

• Wood-burning stove
• For sauna rooms from 283 cu. ft. to 706 cu. ft.
• 2-in-1 : Sauna Heater and Fireplace
• Heats two rooms
• 24kW
• 88 pound stone capacity (stones sold separately)
• Sophisticated design
• Graphite-Black color
• Floor installation with adjustable legs
• Stainless Steel construction
• Cast-iron framed glass door
• Ash Box
• Flue connections on top and rear
• Dimensions: 17" W x 28.7" D x 30" H
• Designed, engineered, and made in Finland
• 2-year manufacturers Warranty

Specifications

• Primary Fuel: Wood
• Kilowatt Rating: 24.1 kW
• Installation Type: Floor-Mount
• Max Temperature: 200º F 
• Sauna room:  283-706 cu. ft.
• Stone Capacity: 119 lbs of stones (90 kgs)
• Dimensions: 30" Height (760mm) x 17" Width (430mm) x 28.7" Depth (730mm)
• Heater weight: 154 lbs
• Shipping Weight (with Sauna Stones): 242 lbs
• Firewood max length: 13.7" (350mm)
  
• Firewood diameter range: 3-6" (80-150mm)
• Flue Connection Location: Back, Top
• Minimum Room Height: 81.1" (2060mm)

What's in the box

• HARVIA 20 SL PRO Sauna stove
• Installation and Operation Manual
• 2 year manufactures warranty

Accessories and Add-ons

The following options should be considered with your heater purchase.

Sauna Stones 

Required for Operation. Sold Separately.

Genuine Harvia sauna stones are selected according to old traditions and convey a genuine sauna atmosphere. Harvia sauna stones provide good and soft heat. Split-face sauna stones are the only correct stones for electric heaters and woodburning stoves because they can store lots of heat and the water evaporates efficiently from the wide surface of the fracture. Angular split-face stones also allow for loose placement of the stones, which is the most important requirement, particularly in electric heaters in order to make it possible for the heat to be conveyed to the sauna room between the hot stones and heating elements. Good air circulation in the stone space makes the electric heating elements last for as long as possible.

The Harvia AC3020 stones are 4-6 in (10-15cm) in size and designed for use with Harvia sauna heaters and stoves. Each natural stone is unique in shape and size so we recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function.

The AC3020 stones work for the following Harvia Sauna Heaters:

• Virta Series
• AF (Forte) Series
• M Series
• Pro Series
• Legend Series

HARVIA 20 PRO SL Sauna Stove requires approximately: 88lbs sauna stones with a diameter of 4-6 in (10-15 cm). 2 boxes x 44lbs

Chimney Kits

Required for Operation. Sold Separately.

The HARVIA M3 Sauna Stove additionally requires connection with the chimney.

1. Stainless Chimney Kit

The Harvia WHP1000500-PKG is everything you need for your sauna room chimney, including the chimney! This kit includes Harvia WHP1000500 stainless steel chimney and Harvia WHPASSYM which is the assembly kit to put it all together. 

The Harvia WHP1000500 allows you to easily and safely extend your Harvia steel chimney. Thanks to the grooved joint mechanism, your extension and chimney will resist movement caused by temperature changes. With the capability of indoor and outdoor installation, the WHP1000500 gives you incredible flexibility.

To be noted: Designed for use on flat roofs.

• Innovative design
• Stainless steel
• Complete package for convenience
• Prevents movement caused by temperature changes
• Can be installed indoors and outdoors
• Designed, engineered, and made in Finland

Includes: 

• Harvia WHP1000500 Chimney, Dimensions: 59" Height (1498mm), 8-5/8" Diameter (203mm)
• Rain Cap
• Symmetrical Rain Flange
• Lead-through insulation and protector
• Lead-through flange
• Smoke Pipe
• Clamp

Harvia Chimney Kit Installation and Operation Manual

2. Black-coated Steel Chimney Kit

The Harvia WHP1000500M-PKG is everything you need for your sauna room chimney, including the chimney! This kit includes Harvia WHP1000500M black steel chimney and Harvia WHPASSYMM which is the assembly kit to put it all together. 

The Harvia WHP1000500M allows you to easily and safely extend your Harvia steel chimney. Thanks to the grooved joint mechanism, your extension and chimney will resist movement caused by temperature changes. With the capability of indoor and outdoor installation, the WHP1000500M gives you incredible flexibility.

To be noted: Designed for use on flat roofs.

• Innovative design
• Black powder coated
• Complete package for convenience
• Prevents movement caused by temperature changes
• Can be installed indoors and outdoors
• Designed, engineered, and made in Finland

Includes:

• Harvia WHP1000500M Chimney, Dimensions: 59" Height (1498mm), 8-5/8" Diameter (203mm)
• Rain Cap
• Symmetrical Rain Flange
• Lead-through insulation and protector
• Lead-through flange
• Smoke Pipe
• Clamp

Harvia Chimney Kit Installation and Operation Manual

Protective Sheath Panel

Optional.

The Harvia WL550 protective shield is designed for use with the Harvia 20 Pro/SL/Duo wood sauna stoves. The protective shield reduces the safety distance to combustible materials. This features a steel material, with a black finish. 

• 3-sided sheath
• Reduces safety distance to combustible materials
• Black color
• Steel material
• 2 year warranty

Harvia Protective Sheath Panel Manual

Protective Bedding

Optional.

Protect your sauna floors with the Harvia WL100 protective bedding. The aluminum-zinc coated steel is painted a classic black and is great for maximizing your sauna floors lifespan. 

The Harvia WL100 protective bedding should be used when a fireplace or stove is installed onto a waterproofed tile or hardwood floor.

• Aluminum-zinc coated steel
• Black
• Adjustable feet
• For wood-burning sauna stoves
• Helps protect floors
• Dimensions: 17.7" W (450mm), 26" D (665mm), 2.4"-3" H (60-75mm)
• Can be installed on a sloping floor
• 2 year warranty

Harvia Protective Bedding Manual

Stainless Steel Water Tank Heater

Optional.

The Harvia pipe model water heater is placed directly on top of the stove, and the tank holds 22 litres of water. The water heats up quickly, as the smoke pipe runs through the tank and acts as a wall inside it. The pipe model water heater is compatible with all wood-heated Harvia stoves (except the Harvia 50 stove).

Harvia Stainless Steel Water Tank Heater Manual

How to Assemble

For the Installation Instructions and Electrical Connections, please refer to the following document: HARVIA Sauna Stove Installation and Operation Manual

Please note: the electrical connection of the device must be performed by a qualified electrician in accordance with the applicable standards and requirements.

Additional Resources

HARVIA Safety Clearances

HARVIA Declaration of Performance

HARVIA Chimney Installation and Operation Manual

For Simple Sauna Sizing, please follow the link HARVIA - Sizing Your Heater. Choose the heater with power adequate to the cubage of the sauna room.  However, for non-insulated walls (brick, glass block, glass, concrete, etc.) a more powerful heater is needed. Add 1,2 m³ to the cubage of the steam room per each square meter of uninsulated wall. For example, a 10 m³ sauna room with a glass door corresponds to the power requirement of a 11.5 m³ sauna room. 

Shipping & Returns

The weight or packaging of this product requires delivery by special appointment, and on a wooden pallet. 

The driver is responsible for curbside delivery “only” and will lower the items to ground level. 

Warranty

2 year manufacturer Warranty.