MI-MC WiFi control unit with MI-RS gutter sensor for gutter heating
Automatic snow and ice clearance for gutters, roofs and downpipes
The MI-MC kit with MI-RS gutter sensor has been developed for the demand-based control of electric gutter heating systems. It is ideal for keeping gutters, downpipes, roof areas and critical drainage zones free of snow and ice, where ice, snow or meltwater can accumulate.
The MI-MC controller analyses the air temperature and humidity at the MI-RS sensor. The connected heating system is only activated when the set temperature conditions are met and moisture is detected on the sensor surface. As a result, the gutter heating system does not operate continuously, but automatically and as required.
Features
- Automatic control of gutter heating Systems
- Suitable for gutters, downpipes and roof areas
- Measurement of air temperature, humidity and sensor temperature
- MI-RS humidity sensor with integrated heating module
- Adjustable upper and lower temperature Limits
- Adjustable post-heating time for reliable drying
- Forced heating mode for manual heating phases
- Display showing key operating Parameters
- Wi-Fi/Smart Life app connectivity for convenient parameter Setting
- Controller for mounting on a DIN rail
How it works
At low temperatures and high humidity, gutters, downpipes and roof edges can quickly become icy. The MI-MC controller monitors the air temperature and the humidity reading from the MI-RS gutter sensor, and switches on the connected gutter heating system only when necessary. Once dry conditions are detected, the heater continues to run for a configurable post-heating period to allow any residual moisture to dry out.
The MI-RS sensor features an internal heating module that warms any snow and ice on the sensor surface, thereby ensuring reliable moisture detection. The sensor is mounted horizontally in the gutter with the sensor surface facing upwards, ideally at the inlet of the downpipe or directly beneath a drip edge. The best installation location is in a damp, shaded area, preferably on the north side of the building.
Typical applications
- Gutter heating Systems
- Downpipe heating Systems
- Roof edge Areas
- Roof drainage areas
- Canopies
- Gutter and pipe trace heating Systems
- Residential and commercial buildings
- Frost protection systems for Roofs
Technical specifications for the MI-MC Controller
Supply voltage: 85–265 V, 50/60 Hz
Standby power: 2 W
Switching capacity: max. 16 A
Terminal cross-section: max. 2.5 mm²
Ambient temperature: 0 to 45 °C
Storage temperature: -10 to 50°C
Protection rating: IP20
Protection class: II
Dimensions: 90 × 3 × 65 mm
Mounting type: DIN rail
Temperature sensor: NTC, 10 kΩ / 25 °C
Air temperature sensor cable length: 3 m
Technical specifications for the MI-RS gutter sensor
Application: Gutter / Roof
Ambient temperature: -50 to 70°C
Temperature measurement range: -30 to 75°C
Cable length: 10 m
Temperature sensor: NTC, 10kΩ / 25°C
Internal heating power: 5W
Protection rating: IP68
Dimensions: 120x30x15mm
Scope of Delivery
1x MI-MC controller
1x MI-RS gutter sensor with 10m cable
1x air temperature sensor with 3m cable
1x user Manual
Installation instructions
The MI-MC controller has an IP20 protection rating and must be installed indoors or within a suitable waterproof enclosure. It is mounted on a 35 mm DIN rail.
The air temperature sensor should be mounted under a roof overhang. It must be protected from rain and snow and must not be exposed to direct sunlight.
For higher loads, the controller’s permissible current rating (16A) must not be exceeded. If the recommended load range is exceeded or if three-phase heating cables (400 V) are used, a suitable power contactor or relay must be fitted. Installation must only be carried out by qualified personnel.
The sensor surface must be cleaned regularly of leaves, dirt and other debris to ensure that moisture can be reliably detected.
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