Final answer:
The passageway and servicing area adjacent to the appliance in an attic installation should be unobstructed, have safe access with a ladder or stairs, and be well-lit and ventilated.
Step-by-step explanation:
For attic installation, the passageway and servicing area adjacent to the appliance shall be unobstructed and of sufficient size to allow access to the appliance, equipped with a ladder or stairs for safe access, and well-lit and ventilated.