Do not locate hot and cold pipes near each other, or in a common confined space, without proper insulation between them. Do not locate electric panels near heat sources or in hot rooms. Minimize heat gain to ventilating air passing through plenums or ductwork. Under summer conditions endeavor to supply ventilating air to rooms in the building with a minimum temperature rise above outside air temperature. Large electric motors located in air plenums.
Air intake off south wall of building.
Plenums located next to hot spaces. Ducts or plenums under uninsulated roofs. Uninsulated plenums where substantial temperature differences exist. In double duct systems, inadequate insulation of both hot and cold ducts or lack of insulation between such ducts. This condition can also occur in a supply and exhaust system where ducts are adjacent.