Control Description The tekmar Steam Control 279 can operate a single on-off steam boiler or an on-off steam valve using outdoor reset. The control determines the on time of the boiler or valve based on the measured outdoor temperature and settings entered by the installer. A large LCD displays the current status and operating temperatures.
Literature—D 279, A 279, D 001, D 070
Control—Microprocessor PID control; This is not a safety (limit) control
Packaged Weight—3.3 lb. (1500 g)
Enclosure—Enclosure A, blue modified 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 (ac) +/- 10% 50/60 Hz 3.5 VA
Relays—230 V (ac) 5 A 1/3 hp, pilot duty 240 VA
Sensors Included—NTC thermistor, 10 kΩ @ 77°F (25°C +/- 0.2°C) ß=3892
Outdoor Sensor 070 and Universal Sensor 071
Optional Devices—tekmar type #: 071, 076, 077, 078, 082, 084
