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New tekmar 650 snow melting control pulse modulation
For Sale: New tekmar 650 snow melting control pulse modulation
Subject New tekmar 650 snow melting control pulse modulation
Ad is submitted by poster:
LOOK AT ALL OF MY TEKMAR HVAC CONTROLS AND PARTS!
* Model: Snow Melting Control 650
* Control: Microprocessor PI control; This is not a safety (limit) control
* Enclosure C, white PVC plastic
* Dimensions: 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
* Approvals: CSA C US, meets ICES & FCC regulations for EMI/RFI
* Ambient conditions: Indoor use only, -20 to 120°F (-30 to 50°C), < 90% RH non-condensing
* Power supply: Class 2, 24 V (ac) ±10% 50/60 Hz 2 VA or 32 V (dc) ±20% 0.04 A
* Relays: 240 V (ac) 10 A 1/3 hp, pilot duty 240 VA 2 A
* Sensors Included: NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
Outdoor Sensor 070 and Slab Sensor 072
* On Time: 0:30 to 19:50 hours to 'Infinite'
* Melting: 34 to 45°F (1 to 7°C)
* Optional Devices: tekmar type #: 031, 032, 040, 062, 063, 071, 072, 073, 076, 078, 079, 077, 367, 368, 369
* Idling: Off, 23 to 34°F (Off, -5 to 1vC)
* CWCO: Off, -22 to 23°F (Off, -30 to -5°C)
* Brand New In Box - Factory Seal Still Affixed
* Compare On-Line at $574.95
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The Snow Melting Control 650 is a microprocessor-based manual start / stop control that maintains a set temperature in a snow melting slab. The 650 uses pulse width modulation (PWM) to operate an on / off injection valve, pump, boiler or contactor for electric cables. Other 650 features include Slab Outdoor Reset, Warm Weather Cut Off, Cold Weather Cut Off, Snow Melting Setpoint and Snow Idling Setpoint. The control also has a built-in timer for timed melting events.
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Posted By: Deborah Sparks
Contact: dsparks@repair--parts.com (Deborah Sparks) (this is a temporary forwarding address).
