the K-1155 is a mechanical repair kit including the plunger

high-output lead to maintain consistent millivolt signals to the gas control valve

Key Benefits for Field Technicians Optimal Desiccant Blend: 75/25 ratio effectively captures moisture and neutralized acid to prevent compressor motor burnout

making it suitable for most standard oven and duct heater proving circuits

or 480V loads

Lennox 17W56 Transformer Els PW 17895 the K-1155 is a mechanicalThe Lennox 17W56 transformer, also identified as model LB 111888A, is a heavy duty Class 2 transformer engineered for precision voltage step down in residential and commercial HVAC systems. This 40VA control transformer features a primary input of 120V AC at 60Hz and a stabilized 24V AC secondary output, making it the standard HVAC 24V power supply for critical components such as furnace control boards, 24 volt contactors, and digital thermostats.