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  Tekmar Difference Setpoint Control
Tekmar Difference Setpoint Control
Click to enlarge

Tekmar Difference Setpoint Control

The Difference Setpoint Control 155 is designed to transfer heat from an intermittent heat source to a storage tank. It can be used in applications ranging from solar thermal to wood boiler systems. Two sensors are used to measure the temperature at the source and at the storage location, and energize a pump when there is a positive difference between the two respectively. This product uses 2 relays to accomplish this; relay 1 is a dry contact that can operate a pump (240 V (ac) dry contact), and relay 2 can be used for drain down solar installations.

Features

  • 24 V (ac) or 24 V (dc) power supply
  • CSA and UL certified for use in the USA and Canada
  • Displays ΔT• hours to perform energy calculation
  • Monitor minimum & maximum temperatures for source & storage

Specifications

Control Microprocessor control. This is not a safety (limit) control
Packaged weight 1.0 lb. (450 g)
Dimensions 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
Enclosure White PVC plastic, NEMA type 1
Approvals CSA C US, meets class B: ICES & FCC Part 15
Ambient conditions Indoor use only, -20 to 120°F (-30 to 50°C), RH ≤90% Non-condensing
Power supply 24 V (ac) ±10%, 50/60 Hz, 3 VA, 24 V (dc) ±10%, 0.03 A
Relay 240 V (ac) 10 A, 1/3 hp
Sensors NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included Universal Sensor 071 and Solar Sensor 085
-Optional tekmar type #: 071,078, 082
Warranty Limited 3 Year Warranty

Current Literature

Product Submittal

Jan 2011 - Present

155_Cpdf

Installation & Operation Manual

Dec 2008 - Present

155_Dpdf

Application Brochure

Dec 2008 - Current

155_Apdf


Part Number: 155

Quantity
Price
1$346.23
2 +$338.94


 
 
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