Difference Setpoint Control – Variable Speed [157]
Posted in Tekmar
Product: Difference Setpoint Control – Variable Speed
Manufacturer: Tekmar
Part Number: 157
Price: $237.95
Free Shipping Eligible: No
Description:
Control Description The Difference Setpoint Control 157 is designed to operate a variable speed pump to transfer heat from a heat source to a storage tank. Varying the speed of the pump provides fast and accurate temperature control to maintain the target temperature difference (ΔT). Additional minimum and maximum setpoints turn off the pump when heat transfer is no longer desirable. Potential applications include using solar collectors or a wood boiler as a heat source.
Literature | — | |
Control | — | Microprocessor control; This is not a safety (limit) control |
Packaged Weight | — | 1.5 lb. (670 g) |
— | Enclosure C, White PVC plastic | |
Dimensions | — | 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm) |
Approvals | — | CSA certified to CSA C22.2 #142-M and UL # 508 |
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 3 VA |
Variable Pump | — | 120 V (ac) 2.4 A 1/6 hp, fuse T2.5 A 250 V |
Pump 2 | — | 120 V (ac) 5 A 1/3 hp, pilot duty 240 VA |
Demand | — | 24 V (ac) 2 VA |
Sensors Included | — | NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 Two of Universal Sensor 071 |
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