Titus HVAC PAR-3-22X22 Grill 323080-701 check for a 24VAC demand

check for a 24VAC demand signal at the control board "G" terminal and inspect the 16-pin communication harness for loose pins or continuity issues

as this unit is typically sold as the motor only

this assembly provides the critical high-voltage arc required for consistent combustion start-up

ensure compliance by pairing with a 12A49 vent limiter to eliminate the need for external vent piping

It is not suitable for zero-pressure or gravity-fed systems

Titus HVAC PAR-3-22X22 Grill 323080-701 check for a 24VAC demandThe Titus PAR 3 22X22 is a professional grade perforated return diffuser engineered for high capacity air distribution in commercial HVAC systems. This 24x24 module features a 22x22 duct connection, providing a seamless flush mount aesthetic that matches Titus PAS supply diffusers for a uniform ceiling appearance. Constructed from heavy gauge steel, the flush face perforated grill utilizes 3 16 inch diameter holes on 1 4 inch staggered centers,