According to IMC 2000 1208.1.1, ground-source heat-pump loop tests should be backfilled prior to inspection.

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Multiple Choice

According to IMC 2000 1208.1.1, ground-source heat-pump loop tests should be backfilled prior to inspection.

Explanation:
The requirement here is about the sequence for geothermal loop work: the trench containing the ground‑source heat‑pump loop must be backfilled before the inspection takes place. This is a mandatory directive, not optional. Backfilling puts the loop into its final, in‑place condition so the inspector can verify that the installation, including the backfill material and its compaction, meets the code and won’t be disturbed or damaged during later work. It also ensures the test results reflect the actual installed system, with the loop properly protected and supported by the surrounding fill. In other words, the inspection is based on the system as it will operate in service, not on an open trench.

The requirement here is about the sequence for geothermal loop work: the trench containing the ground‑source heat‑pump loop must be backfilled before the inspection takes place. This is a mandatory directive, not optional. Backfilling puts the loop into its final, in‑place condition so the inspector can verify that the installation, including the backfill material and its compaction, meets the code and won’t be disturbed or damaged during later work. It also ensures the test results reflect the actual installed system, with the loop properly protected and supported by the surrounding fill. In other words, the inspection is based on the system as it will operate in service, not on an open trench.

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