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This is a direct aftermarket equivalent for the A6-70221 tank cover
Common Questions: Is the WTD-600 suitable for vertical installations
triggering a safe system shutdown to prevent incomplete combustion
preventing contactor chatter or control failure
This kit includes all the critical "soft parts" and mechanical internals such as O-Rings
Belimo FSNF24-S-FC Actuator 320734-701 This is a direct aftermarketThe Belimo FSNF24 S FC Actuator is a dedicated fire and smoke damper actuator designed for UL555 and UL555S applications in modern HVAC systems. Operating on a 24V AC DC supply, this spring return unit provides 36 in lb of torque, ensuring reliable on off control for life safety dampers. Engineered for high temperature resilience, the FSNF24 S FC features a rugged housing capable of withstanding the rigorous demands of smoke control sequences. This