Description

Tekmar 680 Snow Melting Control – BAS – Boiler & Mixing

Features:

• Idling
• Tandem snow/ice detection
• Slab protection
• Exercising
• Automatic snow/ice detection, supports both in-slab and retrofit aerial sensors
• EconoMelt
• Storm
• Energy monitoring, BACnet or Modbus communication
• Warm weather shut down, cold weather cut off

Specifications:

• Agency Approvals – CSA C US, meets class B: ICES & FCC Part 15
• 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 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892
• Snow Melting Control Type – Snow Melting Control

Installation Manual