It is recommended to use a conductive pipe sealant (like Megalock) rather than Teflon tape

a core tube assembly

you can use a higher voltage rating (like 440V) as an upgrade

The Hydrolevel 3150 is specifically designed for oil-fired hot water boilers

High Load Capacity: Features a 16A resistive single-phase rating and 16 FLA at 120VAC

Burnham Boiler 81660279 Valve Refrigerant It is recommended to useThe Burnham Boiler 81660279 Gas Valve is a critical combustion control component engineered for precise fuel regulation in residential and light commercial hydronic heating systems. This 3 4" NPT gas valve utilizes a 24V redundant solenoid design to ensure fail safe operation and reliable ignition sequences. Specifically calibrated for step opening functionality, it manages manifold pressure with a 2. 5" to 3. 5" W. C. range, allowing for smoother