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it prevents the system from operating below critical thresholds during outdoor temperature drops
this part is specifically designed and orificed for propane (LP) gas
Does this unit have a spring return fail-safe
making it a robust choice for heavy-duty residential hydronic demand
but the igniter will not glow
Fenwal 35-705506-023 Control 323055-751 it prevents the system fromThe Fenwal 35 705506 023 is a high performance 120V Direct Spark Ignition (DSI) control engineered for precision sequence management in gas fired appliances. Built with advanced microprocessor based circuitry, this module provides reliable 120VAC ignition control for furnaces, commercial cooking equipment, and infrared heaters. This specific model is configured for a 0 second pre purge, a 15 second inter purge delay, and a 7 second trial for ignition
