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Modulating Controls



DIGI-SPAN® MC-Elite Series

This series of controls senses temperature, pressure, Vacuum, or humidity and provides either an Analog 0-5V, 0-10V, 1-5V, 2-10V, or 4 to 20mA output (MCA-Elite),a Proportional 0 to 135 Ω output (MCP-Elite), and a Floating output (MCF-Elite).

In addition to set point control, the MC-Elite can operate with an outdoor sensor to satisfy Outdoor Reset applications.




The Heat-Timer RSM is designed to control under slab heating systems used to melt ice or snow in Residential applications. It can be used in driveways, staircases, sidewalks, or other locations, which must be kept clear on snow or ice. The RSM will activate the slab heating system when the outdoor temperature is low enough that ice or snow could form.




The VSP-Elite is a variable speed injection pump control and is ideal for most residential and light commercial radiant hydronic heating. The VSP-Elite adjusts the speed of the pump to accurately control the amount of hot water injected into the heating/secondary loop. The VSP-Elite can be used as a hot water Outdoor Reset or single set point control.




The Mini-MOD is an outdoor reset modulating boiler control with built-in Domestic Hot Water Priority. The Mini-MOD can modulate multiple hot water boilers in a Hydronic / hot water heating applications to offer maximum fuel savings. Up to two Mini-Extension can be added each connecting to 6 additional boilers. Summarized, the Mini-Mod can control a total of 16 boilers using two Mini-Extensions.




Is an outdoor reset hybrid control. It operates condensing and non-condensing boilers in a Hydronic heating application with or without Domestic Hot Water Priority to achieve the highest efficiency. It operates both modulating and staging boilers. The Mini-MOD-CNC sequences up to 4 boilers for Hydronic Applications. In addition, up to two Mini-Extension can be added, each connecting to 6 additional boilers, to increase the total number of operated boilers to 16.



Multi-MOD (Modulating)

The Multi-MOD BACnet has now IP and MSTP communication capabilities. It is the perfect control whenever multiple modulating boilers are required for heating or cooling. The Multi-MOD can sequence up to 4 modulating boilers for Temperature or Pressure Applications. An Extension Module can be added to control up to 12 stages. The Multi-MOD can control a total of 20 stages using two Extensions.

See Remote Communication, Internet Communication, BACnet communication, or Modbus Communication add on.