this flame rod detects the presence of ions within the flame

This SPST normally closed switch serves as the primary protection against heat exchanger overheating

and QMark units

5" WC outlet pressure range

maintaining the original integrity of the furnace safety circuit

MARS 11969 Start Capacitor this flame rod detects theAs a field tested technician, you know that a high torque startup is the difference between a smooth running system and a locked rotor. The MARS 11969 is a heavy duty 216 259 Microfarad 330Vac Round Start Capacitor specifically engineered to provide the necessary phase shift for residential and commercial HVAC motor start applications. Housed in a hermetically sealed, moisture proof Bakelite case, this electrolytic start capacitor is built to