TECH TIPS

Basic Tech Tips for Demand Control

General Installation Warning Notice

Energy Sentry Demand Management System installation is required to be performed by a licensed and duly-qualified electrician.

Continue Reading

Demand Control Theory

Wally ran a hamburger stand that had 20 seats. Every day at noon sharp, 60 customers arrived for lunch. Wally had a peak demand for hamburgers at noon.

Continue Reading

Load Control Strategy

The way the demand controller controls loads is called the load control strategy. In one sentence, it is the definition of each load’s importance in relation to all other loads being controlled by the system.

Continue Reading

Tips for Controlling Common Electric Loads

Control of Electric Clothes Dryers

Most electric clothes dryers used in homes today have 5500-watt , 240-volt heating coils with a 120-volt fractional horsepower motor. It is very difficult to operate an all-electric home below 8 kW if the dryer is not controlled by a demand controller.

Continue Reading

Control of Electric Water Heaters

Most residential electric water heaters used in homes today have two 4500-watt, 240-volt heating elements. These elements are interlocked by the water heater’s internal thermostat so that only one element can come on at a time.

Continue Reading

Control of
Resisitve Heat

Most resistive heating circuits are fed from a 20A, 240V breaker, with different circuits for different areas of the house. While these breakers may be labeled by location, it is very important to verify this so that they can be connected to the controller in the proper priority.

Continue Reading

Control of Heat Pumps

Two separate loads in heat pumps usually must be controlled: The compressor and the backup (auxiliary) heat. Generally, the compressor is controlled by breaking the low-voltage signal from the thermostat, usually the Yellow (Y) wire.

Continue Reading

Control of Electric Furnaces

Most residential furnaces have between 10 kW and 25 kW of resistance heat installed. Usually the total wattage is divided into 5 kW elements, staged by timing relays controlled by a “sequencer.”

Continue Reading

Control of Electric Boilers

Electric boilers contain several 5 kW elements that are usually staged to turn on and off with timed sequencers. You must break each element individually with a separate relay with line voltage control in order to control the elements.

Continue Reading

Control of Air Conditioners

Air conditioning compressors are easiest to control by breaking the low-voltage signal from the thermostat to the compressor relay. This is normally the yellow wire (“Y” or “Y1”).

Continue Reading

Control of
Air Conditioners/
Heat Pumps-
Southeast/Southwest

Control the Compressor contactor by breaking the low-voltage signal from the thermostat, usually the YELLOW wire. Be sure to program a minimum OFF-TIME on the relay of at least 5 minutes to prevent short cycling of the compressor, and a minimum ON-TIME of 6 to 9 minutes for desired comfort level.

Continue Reading


Page 1 of 2 1 2NEXT >>