TrimPAK Linkage Control with O₂ Trim Option

TrimPAK offers unique flexibility for small to medium jackshaft boilers. It provides the benefits of linkage-less control at a fraction of the cost, and allows you to turn on energy-saving options in the field as you purchase the necessary field equipment, without paying for additional control hardware. With TrimPAK you can add O2 trim to your jackshaft boiler without the expense of dismantling the linkages and installing independent valves and actuators. 

The basic TrimPAK is a modulating pressure controller with built-in alarms and the option to enable a jackshaft position feedback input with a deviation alarm. The controller can receive the firing rate input from a either a drum pressure transmitter or a plant master controller and provides a dual-mode feature that allows switching between the plant master and drum pressure signals, so you can start with local pressure control and add a plant master as your budget permits. A special dual-mode feature provides the ability to change from remote to local control if necessary. The Bias Ramp option works with a plant master signal to bring the boiler bump-lessly up to the plant demand when switching from manual to automatic control.