Final answer:
The minimum inlet gas pressure for Natural gas is crucial for the safe operation of gas appliances, typically around 7 in. WC or 0.25 psi in the US.
Explanation:
The minimum inlet gas pressure for Natural gas usually refers to the pressure needed for safe and efficient operation of natural gas appliances. In the US, the minimum required inlet pressure for natural gas appliances is typically around 7 inches of water column (in. WC), equivalent to about 0.25 psi.
For high-efficiency appliances, such as tankless water heaters, the minimum inlet gas pressure requirement can be higher, around 5 psi. It's important to consult the specific appliance manufacturer's instructions to determine the exact minimum inlet pressure required for safe operation.
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