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156 | Difference Setpoint Control - On/Off | Tekmar
Detailed information on 156 | Difference Setpoint Control - On/Off | Tekmar
Difference Setpoint Control - On/Off
The Difference Setpoint Control 156 is designed to transfer heat from an intermittent heat source to a storage tank. This control 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 begin heat transfer when there is a positive difference between them. This product uses a single 240 V (ac) rated relay to accomplish this.
Features
- Displays number of running hours of the relay
- CSA and UL certified for use in the USA and Canada
- 24 V (ac) or 24 V (dc) power supply
- Displays Delta-T hours to perform energy calculation
- Monitor minimum and maximum temperatures for source and storage
| Agency Approvals | CSA C US, meets class B: ICES & FCC Part 15 |
| Ambient Conditions | Indoor use only, -20 to 120 degrees F (-30 to 50 degrees C), RH less than or equal to 90 percent Non-condensing |
| Control Type | Microprocessor control, this is not a safety (limit) control |
| Dimensions | 4-3/4\" H x 2-7/8\" W x 7/8\" D (120 x 74 x 22 mm) |
| Enclosure Material | White PVC plastic |
| Enclosure NEMA Rating | NEMA 1 |
| Hydronic - HVAC Control Type | Difference Setpoint Control |
| Power Supply | 24 V (ac) plus / minus 10 percent, 50/60 Hz, 3 VA, 24 V (dc) plus / minus 10 percent, 0.03 A |
| Relay | 240 V (ac) 10 A max, 1/3 hp |
| Sensor | NTC thermistor, 10 k ohms at 77 degrees F (25 degrees C plus / minus 0.2 degrees C) Beta=3892 |
Resources
Datasheet Installation Instructions More Info
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