Description
Tekmar 671 Snow Melting Control - Pulse Width Modulation
Features:
- Automatic software updates
- Idling
- Economelt
- Manual storm
- Automatic snow/ice detection
- Supports both inslab and retrofit aerial sensors
- Supports multiple zones with priority
- Cold weather cut off
- Warm weather shut down
Specifications:
- Agency Approvals - CSA C US, meets class B: ICES & FCC Part 15
- Ambient Conditions - -4 to 122 degree F (-20 to 50 degree C), less than 90 percent RH non-condensing, outdoor use permitted when installed inside an NEMA 3 enclosure
- 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
- Communications Type - WiFi 802.11n, 2.4 GHz, WPA2 encryption
- Control Type - Microprocessor control, this is not a safety (limit) control
- Dimensions - 6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm)
- Display - 3.5" color touchscreen
- Enclosure Material - Blue PVC plastic
- Enclosure NEMA Rating - NEMA 1
- Floating Mixing Output - 230 V (ac), 5 A
- Injection Mixing Output - 230 V (ac), 2.4 A, 1/6 hp, fuse T2.5 A 250V
- Manual Melt Call - Short or 0 - 32 V(ac)
- Power Supply - 115 V (ac)plus / minus 10 percent, 60 Hz, 20 VA
- Relay - 230 V (ac), 5 A, 1/3 hp
- Relay Capacity - 230 V (ac) 5 A, 1/3 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 Detector and Melting Control
Installation Manual
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