ensuring the ERV cassette operates at peak thermal efficiency

metallic rattling during startup

it maintains thermal stability during high-static applications

Always match the OEM temp rating for safety

the "C" suffix typically denotes bulk packaging or specific distributor labeling but does not affect the mechanical temperature control functions

Fenwal 35-615957-115 Control Freon ensuring the ERV cassette operatesThe 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