Operation - Newmac NM-75K Operating Instructions Manual

OPERATION

KEROSENE (1-K) For optimal performance of this heater, it is strongly suggested that 1-K kerosene be used. 1-K
kerosene has been refined to virtually eliminate contaminants, such as sulfur, which can cause a rotten egg odor
during the operation of the heater. Be advised that these fuels do not burn as clean as 1-K kerosene, and care
should be taken to provide more fresh air ventilation to accommodate any added contaminants that may be
added to the heated space. NOTE: Kerosene should only be stored in a blue container that is clearly marked
"kerosene". Never store kerosene in a red container. Red is associated with gasoline.
• NEVER store kerosene in the living space. Kerosene should be stored in a well ventilated area outside the
living area.
• NEVER use fuel such as gasoline, benzene, alcohol, white gas, camp stove fuel, paint thinners, or other oil
compounds in this heater (THESE ARE VOLATILE FUELS THAT CAN CAUSE A FIRE OR EXPLOSION).
• NEVER store kerosene in direct sunlight or near a source of heat.
• NEVER use kerosene that has been stored from one season to the next. Kerosene deteriorates over time. OLD
KEROSENE WILL NOT BURN PROPERLY IN THIS HEATER.
• Use 1-K kerosene in this heater. #1 fuel is a suitable substitute.
OVERVIEW OF HEATER DESIGN
Fuel System: This heater is equipped with an electric air pump that forces air through the air line connected to
the fuel intake, and then through a nozzle in the burner head. When air passes in front of the fuel intake, it causes
fuel to rise from the tank and into the burner nozzle. This fuel and air mixture is then sprayed into the combustion
chamber in a fine mist.
IGNITION
The electronic igniter sends voltage to a specially designed spark plug. The spark plug ignites the fuel and
air mixture described. The Air System: The heavy duty motor turns a fan that forces air into and around the
combustion chamber. Here, the air is heated and then forced out the front of the heater.
THE SAFETY SYSTEM
Temperature Limit Control: This heater is equipped with a Temperature Limit Control designed to turn the heater
off should the internal temperature rise to an unsafe level. If this device activates and turns your heater off, it may
require service. Once the temperature falls below the reset temperature, you will be able to start your heater.
ELECTRICAL SYSTEM PROTECTION
This heater's electrical system is protected by a fuse mounted to the PCB Assembly that protects it and other
electrical components from damage. If your heater fails to operate, check this fuse first and replace as needed.
Refer to specification chart.
FLAME-OUT SENSOR
Utilizes a photocell to monitor the flame in
burn chamber during normal operation. It
will cause the heater to shut off should the
burner flame extinguish.
FUELING YOUR HEATER
Never fill the heater fuel tank in the living
space: fill the tank outdoors. Do not overfill
your heater and be sure heater is level.
WARNING:
Never refill fuel tank when heater
is operating or still hot.
IMPORTANT: REGARDING FIRST IGNITION
OF HEATER. The first time you light the
heater, it should be done OUTDOORS.
This allows the oils, etc., used in
manufacturing heater to be burned
off outside.
Operation
Overview of Heater Design
MODELS
NM-75K, NM-125K,
NM-175K, NM-215K
-8-
Internal Shut-Off Temp.
+/-10 Degrees
176°F (80°C)
Reset Temp.
+/-10 Degrees
158°F (70°C)