For Assistance, Please Call: phone888-470-2757
9am to 5pm EST
Register | Log In
Facebook pageLinkedIn pageTwitter pageGoogle+ page
Cart Summary
Your Cart is Empty
View Cart
 Visa  Mastercard  Discover  American Express
Search
 
 
Navigation
Home
Catalog
Tubing
Electric Floor Heat
SmartTrac
Fittings
Manifolds
Tools & Accessories
Heating System Controls
HydroNex
HPS Pump Panels
RGP Controls
Nibco Radiant Panels
Webstone
Thermostats
Electronic Controls
Tekmar Controls
Mixing Controls
Boiler / DHW Controls
tekmarNet 4 Controls
tekmarNet 2 Controls
Snow Melting Controls
tekmarNet 4 Thermostats
Sensors
Mixing Valves
Miscellaneous
Pumps
Mixing Valves
Flow Control
Gauges and Adapt.
Heat Exchangers
Thermo. Controls
Exp. Tanks & Air Elim.
Radiant Insulation
Water Heaters & Boilers
Books
Services
Specials
SubRay - Discontinued
Info
Estimate Request

Free Radiant Floor Heating Estimates
Free Shipping

Free Ground Shipping on Orders Over $200
Find us on Facebook
RPA Trained - Keeping your project done right
Radiant Professionals Alliance
  Tekmar Difference Setpoint Control-Variable Speed
Tekmar Difference Setpoint Control-Variable Speed
Click to enlarge

Tekmar Difference Setpoint Control-Variable Speed

The Difference Setpoint Control 157 is designed to use a variable speed pump to transfer heat from an intermittent heat source to a storage tank. It can be used in many different solar applications, including closed systems, drainback, or heat dump installations. Two sensors are used to measure the temperature at the source and at the storage location, and begin heat transfer when there is a positive difference between them. This product uses variable speed technology to operate a permanent capacitor wet rotor circulator to vary the rate at which heat transfer occurs.

Features

  • 120 V (ac) powered pump outputs
  • CSA and UL certified for use in the USA and Canada
  • Displays and logs total amount of energy transfer in BTU or kWh
  • Drainback capability
  • External heat exchanger mode
  • Freeze Protection
  • Heat Dump operation
  • Heat supplement mode
  • Optional auxiliary sensor input to be used in heat dump and heat supplement modes
  • Second On/Off pump

Specifications

Control Microprocessor control. This is not a safety (limit) control
Packaged weight 1.5 lb. (670 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
Var. pump 120 V (ac) 2.4 A (FLA), 5 A (LRA), 1/6 hp
Pump 2 120 V (ac) 5 A, 1/6 hp
Demand 24 V (ac) 2 VA
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, 085
Warranty Limited 3 Year Warranty

Current Literature

Product Submittal

Oct 2012 - Present

157_Cpdf

Installation & Operation Manual

Jun 2010 - Present

157_Dpdf

Application Brochure

Jun 2010 - Current

157_Apdf


Part Number: 157

Quantity
Price
1$306.45
2 +$240.41


 
 
Tell a Friend