Controls
Heatec hot oil heaters automatically maintain the operating temperature set by the operator. Accuracy is within a half percent of the set temperature. They maintain thermal fluid temperature at the heater's outlet up to 450 degrees F (depending on variables).

The heaters have numerous safety features to ensure they always operate within prescribed limits. They will shut down automatically if an abnormal operating condition develops.

Limit switches and sensors ensure proper operation. They monitor the burner flame, thermal fluid temperature, exhaust gas temperature, flow of thermal fluid, and combustion air pressure.

Status lights provide a visual indication of the operating state of the heater.

Flame monitor
The heart of the heater control system is a flame monitor with an ultraviolet scanner. It employs solid-state electronics for reliability and long life.

The flame monitor senses the burner main flame and pilot. It purges the firing chamber before firing. It turns on the pilot for a pre-programmed period and allows the main fuel valve to open only when safe. It shuts off fuel if a flame is not present.

Control panel
We use NEMA 4 control panels, which protect against windblown dust and rain, splashing water and hose-directed water. They are UL approved. Wiring workmanship is meticulous and meets strict standards. All wires and terminals are labeled for easy identification of circuits. A laminated circuit diagram is furnished.

Burner controls
Modulating burner controls provide suitable turndown ratios. Full modulation allows the fire rate to closely match the heat demand. This conserves fuel, reduces temperature overshooting and eliminates constant on-off recycling.