While part of the 63-amp OT frame series

Proper grounding is required for the ignition controls to operate correctly

Does this kit include a potential relay or a PTC device

Broad Compatibility: Seamlessly integrates with the EHU-800

allowing for redundant sensing or averaged temperature inputs within a single housing

Watts 0382010 Valve 326010-701 While part of the 63-ampThe Watts 0382010 Valve is a high capacity boiler pressure relief valve designed specifically for hot water space heating systems. Built with a rugged iron body and a 3 4 inch NPT female inlet, this 740 series valve is engineered to protect against excessive pressure. It features a factory preset relief setting of 36 psi and provides a discharge capacity of up to 1,053,000 BTU hr. This model, often designated as 740 036, utilizes expanded outlet drain