If your diagnostic shows a failure in the boiler pump relay or an intermittent GV relay fault on the SMART SYSTEM display

For any technician dealing with high-efficiency boiler installs or retrofitting older tanks

How do I verify if the time delay is functioning correctly

Versatile Compatibility: Rated for use with air and various fuel gases

Sterling HVAC 11261R06045 Conversion Kit 30067439-890 If your diagnostic shows aThe Sterling HVAC 11261R06045 Conversion Kit is a field proven solution for transitioning natural gas to liquid propane (LP) on standing pilot equipment. This OEM gas conversion kit is engineered for a broad range of Sterling unit heaters, specifically the QV, QVS, QVB, QVD, and QVF series ranging from 100 to 250 MBH. As a specialized NG to LP conversion set, it includes high precision main burner orifices, a specific pilot burner orifice, and the