The Boiler Control 256 is a microprocessor-based control designed to regulate the supply water temperature from a single boiler based on the outdoor temperature. To avoid boiler short cycling and large temperature swings, the 256 is able to continuously adjust the boiler differential.
The Boiler Control 261 is a microprocessor-based two stage boiler control designed to regulate the supply water temperature from a single two stage boiler or two single stage boilers based on either outdoor air temperature or a setpoint demand. The 261 can stage and rotate two single fi re boilers or it can stage a single Lo/Hi fi re boiler. The 261 also operates the system pump.
• Control — Microprocessor PID control; This is not a safety (limit) control
• Ambient Conditions — Indoor use only, 32 to 113°F (0 to 45°C),
Get technical help from one of over 100 technical specialists.