IMC 307.2.2

IMC 304 / Manufacturer Specs

The installation meets the manufacturer's minimum clearances. Equipment clearances are determined by the manufacturer's listing and installation instructions, which are enforced by code. As long as the actual clearances meet or exceed the listed minimums, the installation is compliant.

IMC 304.1 / Manufacturer installation instructions

While the height and distance from the register are acceptable, direct sunlight on a thermostat causes false high temperature readings, making the AC run excessively. Thermostats must be installed away from direct sunlight, heat sources, supply registers (min 3' is borderline), and exterior walls. The sunlight exposure is the primary violation here.

IMC 307.2 / ASHRAE

CRAH condensate drains must have a P-trap to prevent pressurized under-floor air from blowing back through the drain line. Without a trap, the raised floor plenum pressure will force air through the drain, preventing condensate from draining and potentially causing water damage.

IMC 401.5

Outdoor air intakes and return air openings must have corrosion-resistant screens (min 1/4" mesh) to prevent entry of birds, rodents, and large debris.

IMC 501.3

Mechanical exhaust must discharge to the outdoors, not into an attic or other concealed space, to avoid dumping moisture and contaminants into the structure.

IMC 501.3 / NFPA 110 7.8

Generator exhaust must be routed away from building air intakes to prevent carbon monoxide and diesel particulate from entering the building. Most codes require a minimum separation of 15-25 feet between exhaust discharge and any air intake opening.