670

Specifications

Control	Microprocessor control. This is not a safety (limit) control
Packaged weight	4.3 lb. (1960 g)
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	Blue PVC plastic, NEMA type 1
Approvals	CSA C US, meets Class B: ICES & FCC Part 15
Ambient conditions	-4 to 122°F (-20 to 50°C), <90% RH non-condensing, outdoor use permitted when installed inside a NEMA 3 enclosure
Power supply	115 V (ac) ±10%, 60 Hz, 20 VA
Relays	230 V (ac), 5 A, 1/3 hp
Boiler modulation output	0-10 V (dc) 500 ? min impedance / 4-20 mA 1 k? max impedance
Injection mixing output	230 V (ac), 2.4 A, 1/6 hp, fuse T2.5 A 250V
Floating mixing output	230 V (ac), 5 A
Analog mixing output	0-10 V (dc) 500 ? min impedance / 4-20 mA 1 k? max impedance
Manual melt call	Short or 0 - 32 V(ac)
Communications	WiFi 802.11n, 2.4 GHz, WPA2 encryption
Mobile app	Apple iOS, Android
Sensor	NTC thermistor, 10 k? @ 77°F (25°C ±0.2°C) ß=3892
Included Sensors	Outdoor Sensor 070 and 2 of Universal Sensor 082
Optional Sensors	tekmar type # 072, 073, 082, 090, 094, 095

The WiFi Snow Melting Control 670 operates hydronic and electric heating equipment designed to melt snow and/or ice from roads and walkway surfaces. The control works with the tekmar Snow/Ice Sensor 090 or Snow Sensor 095 to automatically detect snow or ice and operates a single boiler, steam valve, or electric cable to supply heat to the slab. Boiler return protection is provided to non-condensing boilers using a mixing valve or variable speed injection mixing pump. When connected to the Internet, the Watts® Home mobile app allows the 670 to be controlled remotely.

• Mobile app for iOS and Android, automatic software updates
• Automatic snow/ice detection, Supports both inslab and retrofit aerial sensors
• Supports multiple zones with priority, Idling
• Auto storm, warm weather shut down
• Cold weather cut-out
• EconoMelt
• Slab protection
• Tandem snow/ice detection
• Equipment exercising

Tekmar Snow Melt Brochure

Tekmar 670 Submittal

Tekmar 670 Manual