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
Professionally packed and fast shipping
Our long-standing partnership with UPS FedEx DHL and other carriers around the world allows us to offer a range of shipping services. Our warehouse staff are extremely skilled and will package your items according to our exact and precise specifications. Your products will go through a thorough inspection and be adequately secured before being delivered. Everyday we deliver thousands of packages to clients across many countries. This shows that we're committed to be the largest retailer on the internet. Warehouses and distribution centers are located throughout Europe and the USA.
Note: Orders containing multiple items will have a distinct processing period for each item.
We will carefully examine all items ordered before shipping. The majority of orders are shipped within 48 hours. The expected delivery time will be between 3-7 days.
Returns
The stock is constantly changing and cannot be fully controlled by us due to the involvement of many entities, including the factory as well as our warehouse. Stocks can be changed at any time. It's possible that you may not receive your order after it's been placed.
Our policy runs for a period of 30 days. If it's been longer than 30 days since you bought the item and we're unable to offer you a complete refund or exchange.
You are able to return an item if it is unused and in the same condition as the day you received it. The item must be in the original packaging.
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