The 'R' indicates a revised or updated version of the original 667210 part

It provides a precise motor alignment solution that stabilizes 26-inch condenser fan motors

always use the factory-specified 150 degree limit switch

Mounting hardware is typically part of the compressor assembly or separate kit

Engineered as a high-performance OEM replacement part

AERCO Boiler and Water Heater 27128-2 Pressure Switch Kit R-134A The 'R' indicates a revisedThe AERCO 27128 2 gas pressure switch kit is designed for reliable monitoring and control of fuel gas pressure in AERCO boiler and water heater systems. This gas pressure switch kit ensures proper burner operation by verifying adequate gas supply before ignition, helping prevent unsafe firing conditions. Built for integration with AERCO combustion control systems, this boiler pressure switch is commonly used in commercial hydronic heating and domestic