Methane (CH4) calibration gas at a specific concentration (usually 50% LEL) is required to zero and span the E3SRMM catalytic bead sensor during routine inspections

The Belimo EFB24 is a heavy-duty spring return actuator engineered for on/off control in high-torque HVAC applications

it features a robust belly band mount and a CCW (counter-clockwise) rotation

while the manual changeover and programmable fan options provide granular control over building airflow

Rugged Durability: The heavy-duty bimetal sensing element and steel construction are designed for long-term reliability in utility and mechanical rooms

Lennox 25W17 Motor 328140-751 Methane (CH4) calibration gas atThis Lennox 25W17 OEM condenser fan motor is the professional grade solution for restoring thermal exchange in high voltage residential and light commercial cooling systems. Operating at 460V single phase with a 1 6 HP output, this PSC (Permanent Split Capacitor) motor is engineered for a sustained 1075 RPM to maintain the precise static pressure required by Lennox condensing units. The CCWLE (Counter Clockwise Lead End) rotation matches specific