680

680 Snow Melting product image
Product Image - 680
Product Image - 680
Product Image - 680
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Part of the Snow Melting Controls Series

Ordering Code: 680

UPC: 779655068009

Snow Melting Control, BAS, Boiler and Mixing

 

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The Snow Melting Control 680 is designed to operate electric or hydronic equipment to melt snow or ice from any surface including driveways, walkways, business entrances, parking ramps, loading docks, hospital entrances, helipads and car wash bays. It communicates with Building Automation Systems using BACnet (R) or Modbus (R) for alert notification, remote monitoring and adjustment capability. Up to two snow/ice sensors can be installed, thereby increasing detection area and providing backup redundancy in the case of sensor failure. Upon detection of snow or ice, the 680 operates an electric heating cable, a single hydronic condensing or non-condensing boiler, or a steam valve to provide heat to the snow melt load. The 680 provides boiler return protection by operating a mixing valve or variable speed injection mixing. Monitoring of energy consumption is possible when it is connected to an optional flow sensor.

Features

  • Automatic snow/ice detection, supports both in-slab and retrofit aerial sensors
  • Energy monitoring, BACnet or Modbus communication
  • Warm weather shut down, cold weather cut off
  • Exercising
  • Tandem snow/ice detection
  • Idling
  • Storm
  • EconoMelt
  • Slab protection
Specifications
Agency Approvals CSA C US, meets class B: ICES & FCC Part 15, BTL Listed
Ambient Conditions Indoor use only, 32 to 122 degree F (0 to 50 degree C), less than 90 percent RH non-condensing
Analog Mixing Output 0-10 V (dc) 500 ohms min impedance / 4-20 mA 1 k ohms max impedance
Boiler Modulation Output 0-10 V (dc) 500 ohms min impedance / 4-20 mA 1 k ohms max impedance
Boiler Pump Relay 230 V (ac), 5 A, 1/3 hp
Boiler Stage Relay 230 V (ac), 5 A
Communications Type BACnet IP, BACnet MSTP, Modbus MSTP
Control Type Microprocessor control, this is not a safety (limit) control
Dimensions 8-1/16" H x 11-1/8" W x 2-15/16" D (204 x 282 x 74 mm)
Display 3-1/4" color touchscreen, 320 x 205 pixels
Enclosure Material PC+ABS plastic with steel conduit connection walls
Enclosure NEMA Rating NEMA 1
Floating Mixing Output 230 V (ac), 5 A
Flow Sensor 4-20 mA, 20 V (dc) power supply by control
Injection Mixing Pump 230 V (ac), 2.4 A
Power Supply 115 V (ac) plus / minus 10 percent, 60 Hz, 43 VA standby, 320 VA max
Pressure Sensor 0.5 - 4.5 V (dc) ratiometric, 10k ohms min load, 5 V (dc) power supply by control
Primary - System Pump Relay 230 V (ac), 10 A, 1/2 hp
Sensor NTC thermistor, 10 k ohms at 77 degree F (25 degree Cplus / minus 0.2 degree C) Beta =3892

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