9
• The Snow/Ice Sensor 090 or
Snow Sensor 095 has auto-
matically detected snow or ice .
• The 681 communicates to the
BAS to signal snow or ice has
been detected .
• The Snow/Ice Sensor 090 or
Snow Sensor 095 has not
detected snow or ice .
• The 681 communicates to the
BAS to signal snow or ice is
not detected .
• CWCO is shown when the out-
door temperature is below the
CWCO temperature setpoint .
• The 681 communicates to the
BAS to signal snow or ice is not
detected due to cold temperature .
• WWSD is shown when the out-
door and slab temperature are
above the WWSD temperature
setpoint . During WWSD, the
snow will melt naturally due to
warm temperatures .
• The 681 communicates to the
BAS to signal snow or ice is
not detected due to warm
temperature .
SNOW DETECTED:
TRUE
SNOW DETECTED:
FALSE
COLD WEATHER
CUT OFF
WARM WEATHER
SHUT DOWN
681 Operation
