Heatmaster HMDGJ User Manual
Unvented room heater, Diamondglo heater, Models hmdgii and hmdgj
UNVENTED ROOM HEATER
INSTALLATION AND OPERATING INSTRUCTIONS
This heater is equipped with a PILOT LIGHT SAFETY SYSTEM designed to turn off the heater if not
enough fresh air is available.
Models HMDGII and HMDGJ
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas
If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury or loss of life. Refer to
this manual for information. Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
16-1000 8/26/99 11:30 am
This is an unvented gas-fired heater. It uses air (oxygen) from the
room in which it is installed. Provisions for adequate combustion
and ventilation air must be provided. Refer to page 4 of these
DO NOT TAMPER WITH PILOT LIGHT SAFETY SYSTEM
If the information in this manual is not followed exactly, a fire or explosion may
result causing property damage, personal injury or loss of life.