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654 | Snow Melting Control - tekmarNet Electric for Hydronic Boiler & Mixing | Tekmar
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Overview Details for 654
Snow Melting Control - tekmarNet Electric for Hydronic Boiler & Mixing
The Snow Melting Control 654 is designed to operate electric or hydronic equipment to melt snow or ice from any surface including driveways, walkways, patios, business entrances, parking ramps, loading docks, hospital entrances, helipads or car wash bays. The surface temperature for snow melting is controlled automatically to reduce operating energy costs. The 654 has an automatic start and stop function when used with the Snow/Ice Sensor 090 or 094. Automatic start with a timed stop is available when used with the Snow Sensor 095. The 654 can operate a dedicated hydronic boiler or a mixing device. Isolation relays are required to operate line voltage pumps. Electric systems require a separate GFCI and electrical relay contactor.
Features
- EconoMelt , manual override
- Snow melt zone tracking, scenes
- Manual start with timer, programmable schedule
- Snow melt zoning with priority, tandem snow / ice detection
- Away key, exercising
- Slab protection, storm
- Cold weather cut-out, Idling
- Automatic snow / ice detection, supports both in-slab and retrofit aerial sensors
- tekmarNet® communication compatible, warm weather shut down
Specifications
| Item Number | 654 |
| Brand | Tekmar |
| Category | Snow Melting Controls |
| Ambient Conditions | -4 to 122 degree F (-20 to 50 degree C), less than 90 percent RH non-condensing, outdoor use permitted when installed |
| Control Type | Microprocessor control, this is not a safety (limit) control |
| Dimensions | 5" H x 3-1/4" W x 15/16" D (127 x 82 x 23 mm) |
| Enclosure Material | White PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Modulating Output | 0-10 V (dc), 500 ohms minimum load impedance, 4-20 mA 1 k ohms max load impedance |
| Power Supply | 24 V (ac)plus / minus 10 percent, 60 Hz, Class 2, 16 VA standby, 100 VA fully loaded |
| Relay Capacity | 24 V (ac) 2 A, 3.6 A combined |
| Sensor | NTC thermistor, 10 k ohms at 77 degree F (25 degree Cplus / minus 0.2 degree C) Beta =3892 |
| Snow Melting Control Type | Snow Melting Control |
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