Using genuine S1-029-27075-000 parts ensures that the manifold withstands the thermal cycling and corrosive environments common in residential gas furnaces

ensuring your Lennox HVAC system diagnostics remain accurate and reliable over the long term

the 23H11 and 23H1101 are identical components

It has a 12-inch diameter

meaning the timing period begins the moment the control circuit is de-energized

Watts 0121558 Valve 320734-701 Using genuine S1-029-27075-000 parts ensuresThe Watts 0121558 (Series LF174A) is a high capacity 2 inch boiler pressure relief valve designed specifically for large scale commercial hot water heating and domestic supply systems. Engineered with a lead free copper silicon alloy body, this valve is rated for a 75 PSI set point and provides an exceptional discharge capacity of 7,770,000 BTU hr. Its construction features NPT female threaded connections for both the inlet and outlet, ensuring a