Packaged Heater - shipped completely assembled and ready for immediate hook-up; includes heat exchanger, patented AERCO steam control valve and your choice of electronic or pneumatic controls package.

Bare Heater - heat exchanger only; insulation optional.

Air Compressor - offered with pneumatic valve configurations if building air is unavailable.

Settings for Pressure Relief Valve

• Standard: 150 PSIG, 212°F P&T
• Contact your local AERCO representative for higher settings

Electronic Controls
AERCO's exclusive electronic control system combines a control box assembly with all circuitry, a flow meter installed at the cold water inlet for feed-forward sensing, feedback sensors and voltage regulator. To maintain optimal temperature control, the system utilizes PID algorithms to monitor outlet temperature and change control valve position. Easy-to-use digital displays are protected by clear-cover enclosure which can be locked. The system also includes an overtemp limit switch and water solenoid valve to function as a secondary water relief valve in an over-temperature condition.

Modbus Communications - Optional control board supports remote control and integration via Modbus protocol to Building Automation or Energy Management Software via RS-232 or RS-485 port.

Communications Gateway - optional accessory supports integration with BACnet, LonWorks and N2 systems. Available only for heaters equipped with Modbus control board.

Pneumatic Controls
AERCO's exclusive Loadalert system continuously monitors water temperature and flow and modulates the flow of steam through the control valve and into the coils. Control panel includes pneumatic controller and dual solenoid valve over-temperature limit system. (One solenoid to disable steam control valve; One solenoid to perform as a secondary water relief valve.) Power on/tripped status lights, liquid-filled remote capillary thermometer and compound steam pressure gauge also included.

Dry Contacts - optional for remote "High Limit Tripped Status" indication

Please refer to Tech Data Sheet for complete product and operating specifications information.