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and DH500 series
For technicians performing maintenance or testing
this gasket fits standard 2-bolt flange patterns used in various commercial hydronic circulators matching the ARM1013 specification
We strongly advise using this OEM rectifier board to maintain the specific resistance and voltage profiles required by Carrier control logic
reducing unnecessary service calls for simple over-temperature events
Reznor 131450 Cut Off and DH500 seriesThe Reznor 131450 Energy Cut Off (ECO) is a mission critical safety limit designed for industrial and commercial gas fired unit heaters. This OEM safety device functions as a fail safe by monitoring internal temperatures and automatically interrupting the heating cycle if conditions exceed 152C (306F). In the field, a tripped ECO often indicates airflow obstructions, incorrect gas pressure, or restricted ventingpreventing catastrophic equipment damage