Input: 24VAC, 50/60HZ, 400mA Valve: 120VAC, 5A MAX Blower: 120/240VAC, 15A MAX DHW Pump: 120VAC, 5A MAX Boiler Pump: 120VAC, 5A MAX System Pump: 120/240VAC, 8A MAX Alarm Contact: 24VAC, 2A MAX Ambient: -40 degrees F. to +165 degrees F. Ignitor: 120VAC, 5A