Narvi
Narvi NM Domestic Electric Sauna Heater
Narvi NM Domestic Electric Sauna Heater
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Description
Description
The Narvi NM is a wall-mounted domestic electric sauna heater made in Finland, compact in stature yet holding up to 30 kg of stones, because Narvi believe a generous stone mass is what produces a truly pleasant löyly. It is offered at 4.5 kW for saunas of 3–6 m³ or 6 kW for 5–8 m³, in black, matt grey or stainless steel, with a 9 kW three-phase version listed separately. Both outputs connect to single-phase or three-phase supplies, temperature and timing are set by dials that can be fitted to the left or right side of the unit, and Narvi’s 8.5 mm heating elements give a long service life with a low risk of overheating. Sauna stones are purchased separately.
Features
Technical Specification
| All models | |
| Installation | Wall-mounted |
| Dimensions (H × W × D) | 580 × 430 × 300 mm |
| Weight (without stones) | 10 kg |
| Stone capacity | 30 kg (5–10 cm stones) |
| Outer casing | Stainless steel, painted black or painted grey |
| Minimum sauna height | 1,900 mm |
| Safety distance to ceiling | 1,150 mm |
| Safety distance to floor | 120 mm |
| NM 450 (4.5 kW) | |
| Sauna room volume | 3–6 m³ |
| Electrical connection (400 V 3N~) | 5-core 1.5 mm² H07RN-F, 3 × 10 A fuses |
| Electrical connection (230 V 1N~) | 3-core 2.5 mm² H07RN-F, 1 × 20 A fuse |
| Safety distance to sides | 50 mm |
| Safety distance to front | 50 mm |
| NM 600 (6 kW) | |
| Sauna room volume | 5–8 m³ |
| Electrical connection (400 V 3N~) | 5-core 1.5 mm² H07RN-F, 3 × 10 A fuses |
| Electrical connection (230 V 1N~) | 3-core 6 mm² H07RN-F, 1 × 35 A fuse |
| Safety distance to sides | 50 mm |
| Safety distance to front | 80 mm |
Safety distances are to combustible materials.
Installation
Installation and maintenance must be carried out by a certified electrician, with the electricity supply isolated at the fuse panel before any work begins. Under IEC 60364-7-703 and BS 7671:2018 an electric sauna heater does not have to be connected through an RCD, and for reliable operation the manufacturer recommends that the heater supply is not run through one; other electrical devices in the sauna room should be RCD protected. A local point of isolation covering all live conductors is recommended. The installation manual in the Downloads tab and local wiring regulations must be followed. For the 4.5 kW model on a single-phase supply the manufacturer specifies 3-core 2.5 mm² cable; for longer runs where voltage drop may be a factor, we recommend upgrading the cross-section to 3-core 4 mm².
Sauna stones
This heater requires up to 30 kg of sauna stones, purchased separately. We recommend 5–10 cm olivine diabase or vulcanite stones for the best performance.
Brand
Narvi Oy is a Finnish sauna heater manufacturer, and every Narvi heater is CE tested and carries the Finnish Key Flag symbol, awarded to products designed and made in Finland.
Warranty
The warranty on this Narvi sauna heater is 2 years in private use, and the heating elements carry a 12-month warranty.
Delivery & Returns
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
Description
The Narvi NM is a wall-mounted domestic electric sauna heater made in Finland, compact in stature yet holding up to 30 kg of stones, because Narvi believe a generous stone mass is what produces a truly pleasant löyly. It is offered at 4.5 kW for saunas of 3–6 m³ or 6 kW for 5–8 m³, in black, matt grey or stainless steel, with a 9 kW three-phase version listed separately. Both outputs connect to single-phase or three-phase supplies, temperature and timing are set by dials that can be fitted to the left or right side of the unit, and Narvi’s 8.5 mm heating elements give a long service life with a low risk of overheating. Sauna stones are purchased separately.
Features
| All models | |
| Installation | Wall-mounted |
| Dimensions (H × W × D) | 580 × 430 × 300 mm |
| Weight (without stones) | 10 kg |
| Stone capacity | 30 kg (5–10 cm stones) |
| Outer casing | Stainless steel, painted black or painted grey |
| Minimum sauna height | 1,900 mm |
| Safety distance to ceiling | 1,150 mm |
| Safety distance to floor | 120 mm |
| NM 450 (4.5 kW) | |
| Sauna room volume | 3–6 m³ |
| Electrical connection (400 V 3N~) | 5-core 1.5 mm² H07RN-F, 3 × 10 A fuses |
| Electrical connection (230 V 1N~) | 3-core 2.5 mm² H07RN-F, 1 × 20 A fuse |
| Safety distance to sides | 50 mm |
| Safety distance to front | 50 mm |
| NM 600 (6 kW) | |
| Sauna room volume | 5–8 m³ |
| Electrical connection (400 V 3N~) | 5-core 1.5 mm² H07RN-F, 3 × 10 A fuses |
| Electrical connection (230 V 1N~) | 3-core 6 mm² H07RN-F, 1 × 35 A fuse |
| Safety distance to sides | 50 mm |
| Safety distance to front | 80 mm |
Safety distances are to combustible materials.
Installation
Installation and maintenance must be carried out by a certified electrician, with the electricity supply isolated at the fuse panel before any work begins. Under IEC 60364-7-703 and BS 7671:2018 an electric sauna heater does not have to be connected through an RCD, and for reliable operation the manufacturer recommends that the heater supply is not run through one; other electrical devices in the sauna room should be RCD protected. A local point of isolation covering all live conductors is recommended. The installation manual in the Downloads tab and local wiring regulations must be followed. For the 4.5 kW model on a single-phase supply the manufacturer specifies 3-core 2.5 mm² cable; for longer runs where voltage drop may be a factor, we recommend upgrading the cross-section to 3-core 4 mm².
Sauna stones
This heater requires up to 30 kg of sauna stones, purchased separately. We recommend 5–10 cm olivine diabase or vulcanite stones for the best performance.
Brand
Narvi Oy is a Finnish sauna heater manufacturer, and every Narvi heater is CE tested and carries the Finnish Key Flag symbol, awarded to products designed and made in Finland.
Warranty
The warranty on this Narvi sauna heater is 2 years in private use, and the heating elements carry a 12-month warranty.
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
