Bylin provides custom control options to match the Roof Ice Melt System selected.
The AS (Ambient Switch) consists of an ambient sensing thermostat housed in a weather-tight junction box that can accommodate incoming electrical power wiring and heating cable power connections. The thermostat is factory set to energize the RIM system when the air temperature drops below 34°F, and de-energize the system when the temperature rises above 36°F. The thermostat setting can be field adjusted if necessary. Each AS unit controls a single heating zone.
The MACS (Manual/Auto Control System) uses an electronic temperature sensor (RTD) to sense the outside air temperature. The controller compares the air temperature to the heater-on set point. If the air temperature drops below the heater-on set point (field-adjustable), power will be turned on to any heating zone set to auto mode. If the air temperature drops below the low-temp cutout set point (field-adjustable), power will be turned off to any heating zone set to auto mode. A 3-position switch (Hand-Off-Auto) and power-on light for each heating zone allows individual control and monitoring of each zone.
South facing zones can be manually turned off during periods of no snow on those south facing roof circuits.
The HECS (High-Efficiency Control System) uses an ambient sensing electronic temperature sensor (RTD) and controller in series with RIM panel temperature sensing RTDs, controllers and solid state relay circuitry to provide a energy-efficient control system. The ambient controller will power the RIM panel controllers only when the ambient temperature is between the heater-on set point and the low-temp cutout set point (both field-adjustable). When this condition is met the RIM panel controllers will feed just enough power to the RIM panels to keep them at the maintain temperature set point above freezing (field-adjustable).
The HECS is the most energy efficient control system available.
Note: The National Electrical Coed (NEC) requires the roof and gutter heating cable circuits must be ground fault protected (typically a 30ma ground fault circuit breaker) per Article 426.28.