This OEM housing ensures proper clearance for the inducer wheel

How do I verify if this fits my specific Lochinvar or A

including a 4-second pre-purge and a 120-second trial for ignition (TFI)

general-purpose differential air pressure sensing switch designed for critical HVAC and energy management applications

The unit typically ships with the Natural Gas orifice installed

Siemens Combustion VGD40.065U Valve Body 322838-754 This OEM housing ensures properThe Siemens VGD40. 065U is a high capacity 2 1 2" NPT double gas valve body engineered for integration with SKP series electro hydraulic actuators. This double block valve configuration is designed to manage the flow of natural gas, propane, and air in commercial and industrial combustion systems. Built with a robust die cast aluminum housing, the VGD40. 065U provides a compact footprint while maintaining high flow rates with minimal pressure drop. It