Because of the heat generated by the refrigeration equipment, the room temperature needs to remain at a temperature limited to 104°F. This prescriptive requirement is for the machinery to operate at its optimum, as latent heat loads may affect the design of refrigerants and oils used for lubrication of the equipment the temperature is limited. 2. The code does not offer any exceptions to this. This is to be addressed by the design of the machinery room ventilation to maintain a safe temperature and where natural ventilation cannot provide the required temperature, then mechanical ventilation is required. 3. No, this is a total of the 104°F limit addressed earlier plus and the limit of 18°F temperature rise allowed by incoming air introduced into the machinery room for the entry of authorized personnel.