Attempting to power this unit with 120V or 208/230V will result in failure or significantly reduced performance

Smith BTH series gas water heaters

The most common causes for this switch to open are restricted airflow

ensuring long-term performance in high-ambient mechanical rooms

Copeland 577-0421-01 Suction Accumulator 322027-701 Attempting to power this unitThe Copeland 577 0421 01 Suction Accumulator is a critical OEM component designed for high performance refrigeration and HVAC service. As a veteran technician knows, preventing liquid refrigerant floodback is essential to protecting the compressor's valves and internal mechanicals. This suction line accumulator acts as a temporary reservoir, capturing excess liquid and allowing it to boil off safely while ensuring only vapor returns to the compressor.