Dual Fuel Gas Train - Allows real-time cutover from primary, natural gas operation to propane back-up by rotating a single control valve. No recalibration is necessary;

IRI Gas Train - Incorporates two safety shut-off valves in a single valve body with normally open vent valve.

Electrical Power - 220V 1-Phase, 230V 3-Phase or 460V 3-Phase

Gas Supply Regulator

• Non-lock-up regulators for gas pressure < 14" W.C.
• Lock-up regulators for gas pressures > 14" W.C.

Secondary Low Water Cut-Off (LWCO) - where required by building code. Secondary LWCO must be installed external to boiler.

AERCO C-More™ Control Package - Standard controller supports constant set point, remote set point and/or outdoor reset schedule for individual boiler operation. Offers step-by-step diagnostic menus and status displays to help users set controls and check faults. More than 40 distinct messages, written in easy-to-understand language, convey subsystem status throughout the start-up sequence and during operation. The flash-upgradeable platform can be remotely monitored, controlled and upgraded via Modbus protocol using the RS-232 or RS-485 connection . The system provides failsafe and independent operation in the event of external building control system failures.

Communications Gateway - optional accessory supports boiler or BMS integration with BACnet, LonWorks and N2 systems.

AERCO BMS - optional multiple unit controller recommended for installations of two or more boilers to maximize operating efficiency.