What is the Total System Input in Btuh?

What is the Total System Input in Btuh?

• A. 5,000,000 Btuh
• B. 5,600,000 Btuh
• C. 6,000,000 Btuh
• D. 5,640,000 Btuh

Answer: (D)

Total System Input is the combined gas input rate of every appliance connected to the system, measured in Btuh. You determine it by adding each unit’s input rating. In this scenario, the sum of all the gas inputs is 5,640,000 Btuh, so that is the total. This figure matters because it helps size venting, combustion air, and fuel piping for the system. If one appliance were omitted, you’d get a smaller total, which is why the full sum is the value to use.

Total System Input is the combined gas input rate of every appliance connected to the system, measured in Btuh. You determine it by adding each unit’s input rating. In this scenario, the sum of all the gas inputs is 5,640,000 Btuh, so that is the total. This figure matters because it helps size venting, combustion air, and fuel piping for the system. If one appliance were omitted, you’d get a smaller total, which is why the full sum is the value to use.