The Danfoss 121L3353 Compressor is a high-efficiency 3-ton scroll compressor engineered for reliable performance in residential and light commercial R-22 air conditioning and heat pump applications

maintaining heating continuity

5 ohms) to verify electrical integrity

Downsizing horsepower in a condenser application will lead to overheating and premature failure due to insufficient torque for the fan blade pitch

The TUAE series often utilizes a parts program

Lochinvar & A.O. Smith 100277772 Pressure Switch 321894-709 The Danfoss 121L3353 Compressor isThe Lochinvar & A. O. Smith 100277772 Pressure Switch is a critical safety component engineered for high altitude applications in Crest FBN and FBL heating boilers. This F9 high altitude air pressure switch is factory calibrated with a 4. 1 in WC set point to monitor combustion chamber pressure accurately in thinned atmospheres. It serves as a proving switch, ensuring the combustion air blower provides sufficient flow for a clean, safe burn before the