Grainger 12H976 User manual

Wooden Box Heater
•1500 Watts with
Two Heat Settings
•Automatic Thermostat
•Tip-Over Switch
•Overheat Thermal Cut-Off
Protection
•Room Temperature
LED Display
•Precision Temperature
Control
•Easy Push-Button Controls
•Remote Control
Owner’s Manual
PLEASE READ AND
SAVE THESE INSTRUCTIONS
Model No.: 12H976

CONGRATULATIONS!
The heater you have just purchased
is a safe and powerful heater,
designed to heat a room after a few
minutes of operation. The far-infrared
Quartz-PTC heating system is an
excellent system for safely heating
whole rooms, while saving on
heating bills.
Additionally, this heater includes an
overheat protection system, and an
inlet air overheat protection system
designed to ensure your safety.
This heater does not reduce humidity
or oxygen in your home or office
giving you and your family better
health!
Before using your heater, please take
a few minutes to read these
instructions and review the product
limited warranty.
Thank you!
CAUTION- High temperature, keep
electrical cords, drapery, and other
furnishings at least 3 feet (0.9m) from
the front and rear of the heater outlet.
IMPORTANT
INSTRUCTIONS
When using this appliance, basic
precautions should always be
followed to reduce the risk of fire,
electric shock and injury to persons.
1. Read all the instructions before
using this heater. Use this heater
only as described in this manual.
Any other use not recommended
by the manufacturer may cause
fire, electric shock, or injury to
persons.
2. The outlet of this heater is hot
when in use. To avoid burns, do
not let bare skin touch hot outlet.
Keep combustible materials, such
as furniture, pillows, bedding,
papers, clothes, and curtains at
least 3 feet (0.9m) from the front
and rear of the heater outlet and
keep them away from the sides.
3. Extreme caution is necessary
when any heater is used by or
near children or persons with
physical challenges and whenever
the heater is left operating and
unattended.
4. Do not operate the heater with a
damaged cord or plug, or after the
heater malfunctions, has been
dropped, or damaged in any
manner.
5. Do not use outdoors.
6. This heater is not intended for use
WARNING! To reduce the risk of
fire, electric shock, or personal injury,
read all the instructions before using
this heater. This appliance is
intended for household or personal
use only as described in this
manual. Any other use including
but not limited to commercial,
agricultural, or outdoor use, is not
recommended by the manufacturer
and may cause fire, electric shock,
injury and/or damages.

in bathrooms, laundry areas, or
similar indoor locations. Never
locate the heater where it may fall
into a bathtub or other water
container.
7. Do not run the cord under
carpeting and do not cover the
cord with throw rugs, runners or
the like. Arrange the cord away
from traffic areas and where it will
not be tripped over.
8. To disconnect heater, turn controls
to OFF, then remove plug from
outlet.
9. Do not insert or allow foreign
objects to enter any ventilation or
exhaust opening as this may
cause an electric shock, fire, or
damage to the heater.
10. Connect to properly grounded
outlets only.
11. To prevent a possible fire, do not
block air intakes or exhaust
openings in any manner. Do not
use on soft surfaces, like a bed,
where openings may become
blocked. Use the heater on flat,
dry surfaces only.
12. A heater has hot and arcing or
sparking parts inside. Do not use
heater in areas where gasoline,
paint or flammable liquids are
used or stored.
13. Never clean this heater while it is
plugged in. Do not immerse in
water.
14. This heater includes an
overheating protection system that
shuts off the heater when parts of
the heater are getting excessively
hot. If the heater shuts off,
immediately turn the heater OFF
and inspect for any objects, on or
adjacent to the heater, which may
cause high temperatures. DO NOT
OPERATE THE HEATER UNTIL IT
IS RESET. To reset the heater, turn
it OFF, unplug it from the electrical
outlet, and wait five to ten minutes
for the unit to cool down before
plugging it back in and turning the
heater on.
15. Always unplug heater when not in
use.
16. Always plug heater directly into
a wall outlet/receptacle. Never
use with an extension cord or
relocatable power tap
(outlet/power strip).
17. It is normal for the heater’s plug
and cord to feel warm to the touch.
A plug or cord which becomes hot
to the touch or becomes distorted
in shape may be a result of a worn
electrical outlet. Worn outlets or
receptacles should be replaced
prior to further use of the heater.
Plugging this heater into a worn
outlet may result in overheating of
the power cord or fire.
18. Make sure the plug is fully
inserted into an appropriate
receptacle. Be mindful that
receptacles also deteriorate due to
aging and continuous use. Check
periodically for signs of
overheating or deformations of the
plug. If any overheating or
deformation occurs, immediately
discontinue using the heater

19.CHECK YOUR HEATER CORD
AND PLUG CONNECTIONS.
Faulty wall outlet connections or
loose plugs can cause the outlets
or plug to overheat. During use,
please check frequently to
determine if your plug outlet or
faceplate is HOT! If so,
discontinue using the heater
and/or have a qualified electrician
to check and replace the faulty
outlet(s).
CAUTION: This appliance is not intended
for use by persons (including children)
with reduced physical, sensory or mental
capabilities, or lack of experience and
knowledge, unless they have been given
supervision or instruction concerning use
of the appliance by a person responsible
for their safety
SAVE THESE
INSTRUCTIONS
Operating Instructions
.
1. Plug the power supply cord into a
grounded wall outlet. (110/120VAC,
60Hz)..
Important: This heater comes with a
grounded (3 prong) plug. The
grounded plug must be used with a
grounded outlet. Do not use an
adapter in a 2-slot wall outlet unless
the ground plug of the adapter
properly connects to a building ground.
Using heater without properly
grounded outlet or adapter could
result in an electric shock hazard.
2. TURNING THE HEATER ON:
To turn the heater ON, press the
power button, the power LED light
will turn on. Pressing the MODE
button will allow you to set the heat
settings: press once to set to
AUTO, press twice to set to HIGH,
press three times to set to LOW
and press a fourth time to turn the
heater OFF.
3. TURNING THE HEATER TO
STANDBY: To turn the heater to
STANDBY, press the STANDBY
button. The heater will shut off but
the fan will continue to run until all
the heat has been expelled. The
heater will turn off automatically
and is set to standby mode. If you
are not going to use the heater for
a long time. Press Power button to
fully shut down the heater. The
power LED will turn off.
4. SETTING THE THERMOSTAT
Press the MODE button, set to
AUTO mode to engage the
automatic thermostat.
5. SETTING THE TEMPERATURE
To set the desired temperature:
Press the button once until
the numeric temperature starts
flashing.
Press the button again to
increase the temperature or the
button to decrease the
temperature.
The desired temperature will set and
execute after the LED display stops
flashing and displays the room
temperature again. This is your ideal
setting. The heater will keep LOW
heating output when room

temperature is 1 degree lower and 2
degrees higher than the set
temperature in order to keep the
space warm enough. The heater will
turn OFF when the room temperature
is 3 degrees higher than the set
temperature, and will start
automatically when the room
temperature drops below 2 degrees
than the set temperature.
For example: If your ideal setting is
72°F, the heater will keep LOW
heating output in 71F to 74°F, and will
turn OFF at 75°F.
The default temperature setting is
preset from the factory at 70 degrees
Fahrenheit.
6. For more efficient heating, please
try placing the heater a few feet
above the floor in rooms with large
area. Make sure the heater is secure
and won't fall.
Remote Controller
HOW TO INSERT BATTERIES
NOTE: Remove the batteries if the
remote control is not to be used for a
month or more. Batteries left in the
unit may leak and cause damage.
“ DO NOT MIX OLD AND NEW
BATTERIES”
“ DO NOT MIX ALKALINE,
STANDARD (CARBON-ZINC) OR
RECHARGEABLE
(NICKEL-CADMIUM) BATTERIES.
Instructions for use of IR
Remote Control:
The buttons of the remote control will
function in the same manner as the
buttons on the control panel in front of
the heater, you can set the timer by
using the remote control:
To set the timer
1. Press the TIMER button until the
Set Time starts flashing. The
default value is 3 hours.
2. Press the “+” button to increase the
set time or the “–“ button to
decrease the set time.
The timer can be set from 1 hour to 12
hours. The timer will set and execute
after the LED display stops flashing.
The heater will shut OFF
automatically when the set time is
reached.
3. To turn the timer OFF, follow step 1
and press the “–“ button to set the
time to 0. The timer feature will turn
off when the LED stops flashing
Maintenance
1. Always turn OFF the heater and
disconnect the cord from the
electrical outlet before cleaning
your heater.
2. Light accumulated dust may be
removed from the heater with a
soft cloth or vacuum cleaner.
3. Wipe the exterior surfaces of the
heater occasionally with a damp
cloth (not dripping wet), using a
solution of mild detergent and
water. Dry the case thoroughly
before operating the heater.
Caution: Do not allow water to run
into the interior of the heater
as this could create a fire or
electric shock hazard.

4. The fan motor is factory lubricated
for life and will require no further
lubrication.
5. Store heater in a clean dry place
when not in use.
Cleaning the electrostatic
filter:
The heater has an electrostatic filter
located in the rear of the heater. The
cleaning of the filter should be
performed once per month or as
needed (when dust is visible on the
filter) to ensure efficient operations of
the heater.
1. Power the heater off by pressing
the “POWER” button located on the
left side of the Control Panel.
2. Unplug the heater’s power cord.
3. Release the filter by pushing filter
up from below. ( Figure 1)
4. Remove the filter by pulling down
and out. (Figure 2)
5. Clean filter by vacuuming filter
clean.
6. Replace the filter by sliding the top
upwards into the spring loaded slot
on the back of the heater. (Figure2).
Then gently push bottom of filter into
place.(Figure 1).
Warning: Any other servicing
needed must be performed by an
authorized service representative. Do
not attempt to service the unit
yourself.
Product Specifications
Model#: 12H976
Voltage: 120V, 60Hz
Current: Maximum continuous
draw: 13 amps;
Output: 5200 BTUs
Power: 1500 Watts
Turbo Fan: Multi blade; Low
Noise
Figure 2Figure 1

G
B
TM
Features
A. “Cool-Touch” cabinet E. Mode Buttons
B. Power Button F.LED Temperature Display
C. Decrease temperature button G. Standby ON/OFF button
D. Increasetemperaturebutton
Special Features
zLED Display – When the unit is plugged in, the LED display will show the
room temperature. At Auto mode it will display the set value 2 minutes
after you set the desired temperature.
zOverheat Shut-Off Protection System -This heater includes a protection
system that shuts off the heater if it overheats for any reason.
zInlet Air Overheat Protection System – This heater will automatically shut
off if the inlet air duct gets obstructed and causes the unit to overheat.
zSafety Tip-Over Switch – This Heater is designed to automatically shut-off
when tipped in any direction. Place the heater on a flat, smooth and
stable surface to prevent the heater from tipping over. When returned to
normal upright position, heater is ready for use again. This is a safety
feature to avoid the possibility of fire should the unit be accidentally tipped
over.
Note: There may be a trace of smoke or odor when the unit is first operated.
Do not be alarmed. This is a drop of oil that fell on the interior coils during the
manufacturing process. It will quickly evaporate and should not re-occur.
A
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DE
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