nVent RAYCHEM Raystat-M2 ICE Mode D'emploi page 5

When both preconditions (low temperature and moisture) are met, the thermostat will activate the ice and snow
melting system, and the RELAY LED will light red. After the moisture/temperature signals have been eliminated by
a heating cycle, heat will continue to be provided for the specified length of time, to ensure that all ice and snow is
completely melted.
If some ice and snow remains after the heating system has been deactivated, the afterheat duration should be
increased slightly by adjusting TIME SET. The longer the afterheat duration, the more effective and less economical
the system will be.
If ice and snow is present on the heated area, but the TEMP LED is not lit, the temperature setpoint (TEMP SET)
should be increased to the point where the TEMP LED lights red. The higher the temperature setpoint, the more
effective and less economical the system will be.
Constant heat On
In order to force ice and snow melting ON in any condition, it is possible to turn on the output relay, by turning the
TIME SET knob to Constant. The ON led flashes as long as Constant is activated. Be aware to adjust TIME SET back
at the desired afterrun time, after all snow and ice has melted, to save energy.
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