Service Manual

23 of 48 © 2015 680_D - 10/15
Description Range Access
MELTING SETPOINT
Select the desired temperature of the snow melt surface when melting.
Conditions: Always available.
32 to 95°F
(0.0 to 35.0°C)
Default = 36°F
(2.0°C)
User
Installer
IDLING SETPOINT
Select the desired temperature of the snow melt surface when idling. Idling pre-heats the slab
when the slab is dry but cold and allows faster reaction time to reach the melting temperature
when snow is detected. Recommended for commercial use only.
Conditions: Always available.
OFF, 20 to 95°F
(-6.5 to 35.0°C)
Default = Off
User
Installer
STORM SETPOINT
Select the desired temperature of the snow melt surface while operating in the storm
operation. Storm operation temporarily pre-heats the slab to allow faster reaction time to
reach the melting temperature when snow is detected. Storm operation is activated through
a BACnet or Modbus command.
Conditions: Always available.
OFF, 20 to 95°F
(-6.5 to 35.0°C)
Default = Off
User
Installer
MANUAL MELT TIME
Select the amount of running time when manually starting the system.
Conditions: Always available.
0:30 to 24:00
hours
Default = 4:00
hours
User
Installer
ADD MELT TIME
Select the amount of additional melting time after the Snow/Ice Sensors are dry. This allows
low spots on the slab to fully dry before the snow melting system is shut off.
Conditions: 1) Snow/ice sensor 1 is set to In-slab or Aerial, or 2) Snow/ice sensor 2 is set
to In-slab or Aerial.
0:00 to 6:00
hours
Default = 0:00
hours
Installer
STORM RUN TIME
Select the amount of storm run time to pre-heat the slab when advised of a winter storm
warning.
Conditions:
Storm setpoint is set to a temperature.
0:30 to 24:00
hours
Default = 8:00
hours
Installer
SENSITIVITY 1
Select how sensitive Snow/Ice Sensor 1 is to water detection.
Conditions: Snow/ice sensor 1 is set to In-slab or Aerial.
Auto, Min, -2, -1,
Mid, +1, +2, Max
Default = Auto
Installer
SENSITIVITY 2
Select how sensitive Snow/Ice Sensor 2 is to water detection.
Conditions: Snow/ice sensor 2 is set to In-slab or Aerial.
Auto, Min, -2, -1,
Mid, +1, +2, Max
Default = Auto
Installer
WWSD
Select the temperature above which the snow melting system is shut off during warm
weather. This allows the snow or ice to melt off the slab naturally.
Conditions: Always available.
Auto, 32 to 95°F
(0.0 to 35.0°C)
Default = Auto
Installer
CWCO
Select the temperature below which the snow melting system is shut off during extremely
cold weather. Below this temperature, the heat loss of the slab exceeds the capacity of the
boiler or heating appliance.
Conditions: Always available.
Off, -30 to 50°F
(-34.5 to 10.0°C)
Default = 10°F
(-12.0°C)
Installer
Setpoints Menu