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The NAE 5 ZAA includes an internal check valve
This unit is the primary upgrade for the legacy VAL6376 gas valve
For contractors performing commercial heater repair
maintaining the factory-intended low noise operation and airflow precision
you must install a 500 Ohm resistor across the input signal (Wire 3) and common (Wire 1)
Belimo CQKB24-S-RR Actuator R-407C The NAE 5 ZAA includesThe Belimo CQKB24 S RR is a compact, high performance failsafe rotary actuator designed for use with ZoneTight zone valves in commercial HVAC systems. Operating on a 24V AC DC power supply, this actuator provides reliable on off or floating point control with an integrated auxiliary switch for position feedback. Designed for tight spaces, the CQKB24 S RR features a supercapacitor power storage system, ensuring the valve returns to the fail safe