tekmar Snow Detector & Melting Control 664

Control Description The Snow Detector & Melting Control 664 is a microprocessor-based two zone snow melting control capable of providing priority. The 664 operates either a floating action output, variable speed output or a modulating output (4-20 mA) to provide slab and boiler protection. The 664 is also capable of staging and / or rotating either a single two stage boiler or two single stage boilers. With separate melting and idling setpoints for each zone, the 664 can accommodate different slab construction types.

Literature	—	D 664, A 664's, D 001, D 070, E 021, U 664
Control	—	Microprocessor PID control; This is not a safety (limit) control
Packaged Weight	—	3.5 lb. (1600 g), Enclosure A, blue PVC plastic
Dimensions	—	6-5/8" H x 7-9/16" W x 2-13/16" D (170 x 193 x 72 mm)
Approvals	—	CSA C US, meets ICES & FCC regulations for EMI/RFI
Ambient Conditions	—	Indoor use only, 32 to 122°F (0 to 50°C), < 90% RH non-condensing
Power Supply	—	115 V ±10% 50/60 Hz 600 VA
Variable Pump	—	230 V (ac) 2.4 A 1/6 hp, fuse T2.5 A 250 V
Relays	—	230 V (ac) 5 A 1/3 hp, pilot duty 240 VA
Demands	—	20 to 260 V (ac) 2 VA
Sensors Included	—	NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 Outdoor Sensor 070 and 3 of Universal Sensor 071
Optional Devices	—	tekmar type #: 011, 039, 040, 072, 073, 090, 091

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Literature

Control

Packaged Weight

Dimensions

Approvals

Ambient Conditions

Power Supply

Variable Pump

Relays

Demands

Sensors Included

Optional Devices