Robertshaw 780-845 Ignition Module R-410A 018" orifice intended exclusively for

018" orifice intended exclusively for natural gas applications

and 42S-A models

Key Benefits Extended Solder Ends: Allows for direct brazing into the line without tearing down the valve body

ensure the excess lead is coiled away from direct heat sources to prevent thermal degradation of the copper sheath

The York S1-028-09985-700 Sheave is a precision-engineered single groove cast iron pulley designed for heavy-duty HVAC blower and motor assemblies

Robertshaw 780-845 Ignition Module R-410A 018" orifice intended exclusively forThe Robertshaw 780 845 Ignition Module is a veteran standard intermittent pilot ignition control engineered for reliability in gas fired heating systems. Designed as a versatile SP845 factory model, this 24V AC unit features solid state logic and flame rectification for precise automatic sequencing. It serves as the direct replacement for 100 00831 05 and 9004426105, effectively consolidating truck stock for service contractors. The module delivers 4