Owner`s manual
Page 34
WARNING: ELECTRICAL GROUNDING INSTRUCTION: THIS APPLIANCE IS
EQUIPPED WITH A THREE-PRONG GROUNDING PLUG FOR YOUR
PROTECTION AGAINST SHOCK HAZARD AND SHOULD BE PLUGGED
DIRECTLY INTO A PROPERLY GROUNDED THREE-PRONG RECEPTACLE.
WARNING: Do not use a blower insert, heat exchanger insert or other accessories
not approved for use with this heater.
WARNING: “The motor is permanently lubricated. Do not add any type of lubricant.”