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Difference Setpoint Control - Variable Speed

SKU:157

Brand: Tekmar

Difference Setpoint Control - Variable Speed
Qty	Price
	$236.95 / each

In Stock! Ships in 24-48 Hours

Order by 3PM, Receive Tomorrow Order by 3PM, Receive Fri. Jun 21 Order by 2PM, Receive Fri. Jun 21

3 Available

Specs

Product Specs
Type:	Variable Speed
Application:	Alternative Energy
Width:	2-7/8"
Height:	4-3/4"
Stages: ? Stages close Stages describes the number of heat or cool sources that you need to control with a single thermostat.	Difference Setpoint
User Interface:	Push Button
	LCD
Voltage: ? Voltage close Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).	24v
Depth (Inches):	7/8"
Ambient Conditions:	Indoor Only: -20°-120°F < 90% RH non-condensing
Power Supply:	24V
Min Temp (F):	-30°F
Temperature Range (F):	-30°-300°F
Max Temp (F):	300°F
Control:	Microprocessor Control
Sensors:	NTC Thermistor 10 k ohm @ 77°F
Enclosure Type:	C
Weight (lbs):	1.5 lbs
Demands:	24 V (ac) 2 VA

Description for Tekmar 157

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