HUUM
UKU Wi-Fi Spare Main Module (for UKU 4.2)
UKU Wi-Fi Spare Main Module (for UKU 4.2)
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Description
Description
The UKU Wi-Fi Spare Main Module is the replacement power and control module for the UKU 4.2 generation, listed by HUUM as spare part SP0158. It is supplied as the main module only, without the control panel or cover, and is intended for repairs on an existing UKU 4.2 Wi-Fi installation where the panel, sensors and cabling are already in place; a UKU control panel is required for the system to function and is sold separately. The module runs electric sauna heaters of up to 18 kW on a 400 V three-phase or 230 V single-phase supply, connects to a 2.4 GHz Wi-Fi network for HUUM app control, and carries the system’s overheating protection, timer and child safety lock.
Features
Technical Specification
| Spare part number | SP0158 |
| Suitable for | HUUM UKU 4.2 Wi-Fi control systems |
| Supplied | Main module only; control panel, sensors and cables not included |
| Maximum heater power | 18 kW (no more than 6 kW per heating circuit) |
| Supply voltage | 400 V 3N~ or 230 V 1N~ |
| Temperature range | 40–110 °C |
| Main module dimensions | 250 × 175 × 75 mm |
| Wi-Fi | 2.4 GHz networks (802.11 b/g/n) |
| Ingress protection | IP67 (with cable glands fitted) |
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. The replacement module takes over the existing panel, sensor and power connections of a UKU 4.2 installation. It should be installed outside the sauna room; where that is not possible it may be mounted inside, no higher than 10 cm from the floor and at least 150 cm from the heater, ideally beneath the bench. The cable glands must be used, or the IP rating of the device no longer applies.
Brand
HUUM is an Estonian maker of design-led sauna heaters and controls, whose DROP heater won the Red Dot Award for Product Design in 2015.
Warranty
The warranty card is available in the Downloads tab.
Ordering note
Before ordering, check your heater model, the heater’s rated power and your UKU controller generation (UKU 4.1 or 4.2), as panels and parts differ between generations. Electrical installation must be carried out by a certified electrician.
Downloads
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 UKU Wi-Fi Spare Main Module is the replacement power and control module for the UKU 4.2 generation, listed by HUUM as spare part SP0158. It is supplied as the main module only, without the control panel or cover, and is intended for repairs on an existing UKU 4.2 Wi-Fi installation where the panel, sensors and cabling are already in place; a UKU control panel is required for the system to function and is sold separately. The module runs electric sauna heaters of up to 18 kW on a 400 V three-phase or 230 V single-phase supply, connects to a 2.4 GHz Wi-Fi network for HUUM app control, and carries the system’s overheating protection, timer and child safety lock.
Features
| Spare part number | SP0158 |
| Suitable for | HUUM UKU 4.2 Wi-Fi control systems |
| Supplied | Main module only; control panel, sensors and cables not included |
| Maximum heater power | 18 kW (no more than 6 kW per heating circuit) |
| Supply voltage | 400 V 3N~ or 230 V 1N~ |
| Temperature range | 40–110 °C |
| Main module dimensions | 250 × 175 × 75 mm |
| Wi-Fi | 2.4 GHz networks (802.11 b/g/n) |
| Ingress protection | IP67 (with cable glands fitted) |
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. The replacement module takes over the existing panel, sensor and power connections of a UKU 4.2 installation. It should be installed outside the sauna room; where that is not possible it may be mounted inside, no higher than 10 cm from the floor and at least 150 cm from the heater, ideally beneath the bench. The cable glands must be used, or the IP rating of the device no longer applies.
Brand
HUUM is an Estonian maker of design-led sauna heaters and controls, whose DROP heater won the Red Dot Award for Product Design in 2015.
Warranty
The warranty card is available in the Downloads tab.
Ordering note
Before ordering, check your heater model, the heater’s rated power and your UKU controller generation (UKU 4.1 or 4.2), as panels and parts differ between generations. Electrical installation must be carried out by a certified electrician.
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.
