Tekmar Boiler Control - Two Stage Boiler & Setpoint

The Boiler Control 261 is a microprocessor-based two stage boiler control designed to regulate the supply water temperature from a single two stage boiler or two single stage boilers based on either outdoor air temperature or a setpoint demand. The 261 can stage and rotate two single fire boilers or it can stage a single Lo/Hi fire boiler. The 261 also operates the system pump. Specifications: Literature: D 261, A 261's, D 001, D 070 Control: Microprocessor PID control; This is not a safety (limit) control Packaged Weight: 3.0 lb. (1340 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 113+F (0 to 45+C), < 90% RH non-condensing Power Supply: 120 V +10% 50/60 Hz 1300 VA Relays: 240 V (ac) 10 A 1/3 hp, pilot duty 240 VA Demands: 20 to 260 V (ac) 2 VA Sensors Included: NTC thermistor, 10 k @ 77+F (25+C +0.2+C) +=3892 Outdoor Sensor 070 and Universal Sensor ...