The Fireye 25SU3-5168 Flame amplifier, 120/230 VAC, high sensitivity. Consists of 60-2203-2, 60-2207-1, and 60-2301.
The Fireye Type 5166/5168 control provides flame safeguard interlock capability for systems incorporating single and multiple burner firing apparatus. Typical applications include power generation, industrial processes, pulp and paper mills, chemical plants, and electric utility furnaces and boilers that fire gas, oil, pulverized coal or a combination of these fuels on a continuous basis. The 5166/5168 control can also be applied in the flame safeguard circuits of supervised manual and semiautomatic burner management systems. This control monitors flame to supervise burner operation throughout the entire burner firing cycle.
The 5166 with high discrimination amplifier should be used in those applications where the scanner pulse ratio from flame-on to flame-off is low (< 3:1). The 5168 with high sensitivity amplifier should be used in those applications where the scanner pulse ratio from flame-on to flame-off is large (> 3:1).
During normal burner start-up and operation, the 5166/5168 control proves the presence of flame and activates auxiliary equipment to indicate flame status and permit the delivery and ignition of fuel to the burner. In the event of an ignition or flame failure, the control can provide the primary shutdown contact to the control circuitry. Using this primary contact, the control circuit designer can provide functions such as visual indication of flame and ignition presence, alarm indication, shutdown of ignition power and control of the shutoff valve. An external connection diagram is shown later in this bulletin.