The installation of the Harvia Linear 22 GreenFlame must always comply with local building regulations, fire protection requirements, and the manufacturer's installation instructions. As a wood-burning sauna heater, it operates with real fire, high surface temperatures, and flue gas discharge systems, making professional installation essential for safe operation.
The heater is designed for sauna rooms with a volume of approximately 9 to 18 cubic meters. Choosing the correct heater size is crucial. An oversized heater may create excessive heat, while an undersized heater may struggle to achieve the desired sauna temperature. Proper sizing ensures comfortable sauna conditions, efficient combustion, and optimal energy utilization.
Mandatory safety distances from combustible materials must always be observed. Walls, ceilings, flooring, benches, and surrounding structures must be protected from heat exposure. If installed on combustible flooring materials, an approved fireproof base or protective floor plate is required. The area in front of the heater door should also be protected against sparks and falling embers that may occur during refueling.
Correct flue gas routing plays a critical role in both safety and performance. The chimney connection, smoke pipe installation, and draft characteristics must meet the technical requirements specified by Harvia. Poorly designed chimney systems, leaks, or unsuitable components may impair combustion quality, increase emissions, reduce heating efficiency, and create safety hazards. Installation should therefore always be inspected or completed by qualified professionals.
Suitable sauna stones are required for operation and are not included with the heater. Stones should be thoroughly rinsed before installation and arranged loosely within the stone compartment. Overfilling or tightly packing stones may restrict airflow, reduce combustion efficiency, and negatively affect heat transfer. Damaged or deteriorated stones should be replaced regularly to maintain safe and efficient operation.
Proper ventilation is equally important. Wood combustion requires a constant supply of fresh oxygen. Insufficient ventilation can result in incomplete combustion, smoke development, lower efficiency, and increased emissions. The sauna room should therefore be equipped with properly designed supply and exhaust ventilation systems to ensure optimal combustion conditions and comfortable sauna operation.
During the first heating cycle, temporary odors or smoke may occur due to manufacturing residues. The heater should therefore be conditioned according to Harvia's instructions before normal operation. Only dry, untreated firewood should be used. Painted wood, pressure-treated lumber, particleboard, waste materials, or chemically treated fuels must never be burned, as they can damage the heater, chimney system, and potentially pose health risks.
