Using it with natural gas without a certified conversion kit can cause hazardous combustion conditions

it is engineered to interface with Lochinvar Smart System logic for advanced cascading and modulation

Precision Engineering: Designed with exact port locations for immediate connection to existing pressure switch tubing and venting

offering more positioning flexibility than the standard water-resistant (WR) variants

This direct acting controller is designed specifically for vertical mounting and facilitates individual day and night setpoints

York S1-R72DB0004 TXV Kit 318973-401 Using it with natural gasThe York S1 R72DB0004 is a precision engineered thermal expansion valve designed specifically for integration with a Mortex evaporator coil. Serving as the direct replacement for the legacy R72DB0004, this TXV kit is essential for maintaining accurate refrigerant metering and evaporator superheat during high demand cooling cycles. For field technicians servicing York, Luxaire, or Coleman equipment, utilizing this OEM HVAC part ensures the system