failure of the valve to shift under pressure

providing superior capture of microscopic contaminants including pollen

The unit is factory-calibrated for a 20 psig nominal supply pressure and includes pneumatic feedback with volume amplification to minimize lag and ensure accurate setpoint maintenance

it maintains thermal stability during high-static applications

Always match the OEM temp rating for safety

Fenwal 35-615957-115 Control Freon failure of the valve toThe Fenwal 35 615957 115 Control is a microprocessor based 24V DSI Calcana Ignition Control engineered for high demand gas fired heating systems. This direct spark ignition module serves as the official replacement for 35 615925 115, providing seamless integration into Calcana infrared heaters and commercial burner assemblies. Operating on 24 VAC with a 1 4 HP combustion blower relay, it features a 15 second pre purge, 15 second inter purge, and a 10