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fail-safe boiler relief valve that maintains system integrity under peak thermal loads
these valves are factory-set and should not be tampered with or adjusted by the installer
Technicians should verify the actual dimensions against the existing filter track before attempting installation in non-Lennox equipment
allowing the furnace pressure switch to close and the ignition sequence to complete safely
Johnson Controls S-224-1 Switch Freon fail-safe boiler relief valve thatThe Johnson Controls S 224 1 is a precision engineered pneumatic gradual switch designed for manual control of pressure in air lines from a remote location. This HVAC pneumatic controller features a 20 psi span, allowing for accurate modulation of pneumatic actuators or dampers within a control circuit. Built for industrial durability, the S 224 1 manual switch utilizes a force balance mechanism to maintain reliable output pressure settings. As a
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