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Tekmar 156 Variable Speed Solar Controller



559.75 $391.80

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Product Details & Specifications

Weight field_209 lbs
Dimensions field_203
Tekmar 156 Variable Speed: This variable speed Difference Setpoint Control features minimum setpoint and maximum setpoints so that your pump can turn on and off accordingly. This control can be used with solar collectors or a wood boiler as the heat source and  is intended for use with a variable speed pump to transfer heat to a storage tank.Features:

  • Indoor use only
  • CSA Certified to CSA C22.2 #142-M
  • CSA Certified to UL #508


Control Description The Difference Setpoint Control 156 is designed to operate an on/off pump to transfer heat from a heat source to a storage tank. The control operates based on a setpoint temperature difference (ΔT). The relay turns on when the ΔT rises above the setpoint and turns off when the ΔT falls below the setpoint less the differential. The Source Minimum and Storage Maximum settings turn off the relay when heat transfer is no longer desirable. Potential applications include using solar collectors or a wood boiler as a heat source.



  D 156 A 156 D 001 D 070


  Microprocessor control; This is not a safety (limit) control

Packaged Weight

  0.8 lb. (360 g)
  Enclosure C White PVC plastic


  4-3/4 H x 2-7/8 W x 7/8 D (120 x 74 x 22 mm)


  CSA certified to CSA 22.2 No 24 and UL 873

Ambient Conditions

  Indoor use only -20 to 120 F (-30 to 50 C) < 90% RH non-condensing

Power Supply

  24 V 10% 50/60 Hz 2 VA
24 V (dc) 10% 0.04 A


  Relay 240 V (ac) 10 A 1/3 hp pilot duty 240 VA

Sensors Included

  NTC thermistor 10 kΩ @ 77 F (25 C 0.2 C) =3892 Two of Universal Sensor 071

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2917 State Hwy 7
Bainbridge, NY 13733
P: 1.800.786.0329


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2917 St Hwy 7
Bainbridge, NY 13733

P: 1.800.786.0329

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