as these can enlarge the #35 opening

Does this unit require a separate transformer

provided the outlet pressure spring range (8-12" w

It is recommended to inspect the Buna-N valve pad for wear when replacing the orifice to ensure a positive dead-end lockup

When diagnosing a system that fails to respond to thermostat mode changes

Lennox 68J37 Contactor as these can enlarge theThe Lennox 68J37 Contactor is a heavy duty 2 pole 35 amp electrical contactor engineered for consistent performance in residential and light commercial HVAC systems. This definite purpose contactor features a 24V coil and serves as a direct replacement for Lennox 68J3701 and 3100 20Q2208. Built to withstand the high inrush currents typical of AC compressor startup, its silver cadmium oxide contacts resist welding and pitting under thermal load. The