Multi-staging controls provide significant energy savings and increase system reliability. System efficiency is increased by only operating the number of heating appliances required to match the heating load. System reliability is improved by automatically activating a backup stand-by heating appliance in the event that another appliance fails. Each heating appliance receives equal run time rotation, thereby prolonging the lifespan of the entire heating plant. In addition, each pump is periodically exercised to reduce the chance of pump seizure or failure.

Classic Series

Classic series controls stage multiple heat sources to provide outdoor reset for hydronic heating and provide domestic hot water tank heating. Each control operates as a stand-alone unit.

• Pump Sequencer 132
• Boiler Controls 262, 263, 265 and 268

Performance Series

Performance series controls operate multiple heat sources to provide outdoor reset for hydronic heating and provide domestic hot water tank heating. This series can also operate two stand-by system pumps for greater system reliability. Each control can operate as a stand-alone unit or combined together with communicating thermostats and / or a gateway for remote access and monitoring.

• Boiler Controls 274 and 275