Tekmar 153 - The Mixing Setpoint Control 153 is a microprocessor-based control with a floating action output intended to operate an actuating motor for a valve or damper. The 153 can be used for heating applications to maintain a set supply water or air temperature. An optional return sensor can be used to ensure a minimum boiler return temperature. An adjustable throttling range and setpoint temperature allows this control to be used in a wide variety of applications.
Dimensions 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
Approvals CSA C US, meets ICES & FCC regulations for EMI/RFI
Ambient Conditions Indoor use only, -20 to 120°F (-30 to 50°C), < 90% RH non-condensing
Power Supply Class 2, 24 V (ac) +/- 10% 50/60 Hz 2 VA or 32 V (dc) +/- 20% 0.04 A
Relays 240 V (ac) 10 A, 1/3 hp, pilot duty 240 VA 2 A
Sensors Included NTC thermistor, 10 k? @ 77°F (25°C +/- 0.2°C) ß=3892 Universal Sensor 071
Optional Devices tekmar type #: 070, 071, 072, 073, 076, 077, 078, 079
Programmed Settings Ten year memory backup
Control Accuracy +/- 0.5°F (+/- 0.3°C) with up to 500 feet (150 m) of 18 AWG wire to sensors
Temperature Display -85 to 302°F (-65 to 150°C)
Supply (1) Setpoint -40 to 239°F (-40 to 115°C)
Throttling Range 16 to 66°F (9 to 37°C)
Boiler Return (2) -40 to 239°F (-40 to 115°C)
Temperature Display Fahrenheit / Celsius
