York S1-026-49696-000 Blower Combustion 320788-704 The internal relief valve is
Baker’s notes & crumb story
Description
York S1 026 49696 000 Blower Combustion 320788 704 The internal relief valve is The internal relief valve is factory set to begin relieving at approximately 7 10" W this control assembly helps maintain optimal system efficiency and minimize costly downtime