Reznor 131450 Cut Off The unit should be mounted

The unit should be mounted within a NEMA-rated enclosure or a protected indoor environment

Can I use standard nuts instead of this acorn nut kit

preventing the costly heat exchanger damage associated with restricted airflow or over-firing

Common Questions What causes a limit switch like the 3L09-17 to trip frequently

Reznor 131450 Cut Off The unit should be mountedThe 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