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Enhanced Troubleshooting: Integrated diagnostic LED simplifies identifying lockout conditions or flame signal issues
this universal boiler control ensures your customers stay in their aquastat low limit and high limit comfort zone while optimizing fuel efficiency
Utilizing a solid state ignition transformer for HVAC applications like this prevents common nuisance lockouts caused by weak or erratic spark
Note that this is a Parker GP407 series replacement unit
Resideo ZD20X12TZ Damper 326058-755 Enhanced Troubleshooting: Integrated diagnostic LEDThe Resideo ZD20X12TZ (also identified as ZD20X12TZ U) is a heavy duty 20x12 rectangular zone damper engineered for tight airflow management in forced air systems. This parallel blade zone damper utilizes a 24Vac synchronous motor mounted on the 12 inch side, delivering high torque for reliable operation. Designed as a power closed spring return open assembly, it ensures the duct remains open during power loss or system standby, maintaining critical
