Fenwal 35-665576-111 Ignition Module 326058-757 ensure the flange bolts are

ensure the flange bolts are tightened in a secondary pattern to approximately 300 lb-in (34 Nm) to ensure a leak-free seal on the gaskets

What symptom indicates a failing or missing burner disc

allowing for system operation to resume without manual intervention

What is the maximum pressure and temperature rating

preventing ignition failures and potential damage to the ignition module

Fenwal 35-665576-111 Ignition Module 326058-757 ensure the flange bolts areThe Fenwal 35 665576 111 is a microprocessor based 120V HSI Control engineered for high reliability performance in residential furnaces, hydronic boilers, and commercial water heaters. This hot surface ignition module features a 20 second heat up time and a 4 second trial for ignition (TFI) period, ensuring precise sequencing for gas fired heating equipment. As an OEM grade replacement, it provides robust flame sensing using Detect A Flame technology,