DR. Heater DR-978 User manual

Infrared Portable Space Heater
1500 Watts with
Two Heat Settings
Thermal Cutoff Protection
Tip-Over Switch
Room Temperature
LED Display
Precision Temperature
Control
Easy Push-Button Controls
Remote Control
Advanced Dual Heating System (ADHS)
Owner’s Manual
PLEASE READ AND
SAVE THESE INSTRUCTIONS
Model No.: DR-978

T
CONGRATULATIONS!
he Dr. Infrared 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
choice for safely heating whole rooms, while saving on heating costs.
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,
promoting a healthier environment!
Before using your Dr. Infrared Heater, please take a few minutes to read these
instructions, and review the product’s limited warranty.
Thank you!
CAUTION-High temperature! Keep electrical cords, drapery, and other
furnishings at least 3 feet (0.9 m) from the front and rear of the heater.
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.
2. This heater is hot when in use. To avoid burns, do not let bare skin touch hot
surfaces. Keep combustible materials, such as furniture, pillows, bedding,
papers, clothes and curtains at least 3 feet (0.9 m) from the front of the
heater and away from the sides and rear.
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.
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. The use of any attachments and accessories or extension
cords not recommended or sold by Dr. Infrared Heater Products may cause
hazards and void the warranty.

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. Return the
heater to an authorized service facility for examination, electrical or
mechanical adjustment, or repair.
5. Do not use outdoors.
6. This heater is not intended for use in bathrooms, laundry areas or similar
locations. Never locate the unit 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. Do not route cord under furniture or appliances.
Arrange the cord away from traffic areas to avoid a tripping hazard.
8. To disconnect the heater, turn controls to OFF, then remove the 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 the heater
in areas where gasoline, paint or flammable liquids are used or stored.
13. 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.
14. Never clean this heater while it is plugged in. Do not immerse in water. To
disconnect, turn control to OFF, then remove the plug from the outlet by
grasping it and pulling it from the outlet. Never yank on the cord.
15. Always unplug the heater when it is 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 and contact Dr. Infrared Heater Authorized Service Center.
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 it is hot, discontinue using the heater and/or make
certain a qualified electrician checks and replaces 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
Product Specifications
Voltage Rating
120V (60Hz)
Power Consumption
1500W
Unit Size
12.1 in. (H) X 9.4 in. (W) X9.4 in. (D)
Unit Weight
10.4 lbs.

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B
TM
Special Features
LED Display – When the unit is plugged in, the POWER LED will light. To turn
the heater ON, press the MODE button, the heater will wait in ECO Mode. At
ECO mode, it will display the set value 2 minutes after the desired temperature
is set.
Overheat Cut-Off Protection System –This heater includes a protection system
that cuts off the unit if it overheats for any reason.
Inlet Air Overheat Protection System – This heater will automatically cut off if
the inlet air duct becomes obstructed and causes the unit to overheat.
Safety Tip-Over Switch – The Dr. Infrared Heater is designed to cut off
automatically when tipped in any direction. Place the heater on a flat, smooth,
stable surface to prevent the heater from tipping over again. When returned to
a normal upright position, the heater is ready for use again. This is a safety
feature to avoid the possibility of fire should the unit be tipped accidentally.
Advanced Dual Heating System (ADHS) - Dr. Heater is the first to feature a
dual heating system for maximum heat transfer rate. It combines the energy
efficiency of infrared heat with the comfort of convection heat to heat your room
fast and comfortably—without hot spots and cold spots.
Features
A. “Cool-Touch” cabinet E. LED temperature display
B. POWER LED F. Increase temperature button
C. Standby ON/OFF button G. Decrease temperature button
D. MODE button
F
E
D
A
C

Operating Instructions
1. Plug the power supply cord into a grounded wall outlet. (120VAC,
60Hz)
Important: This heater is for use on
120 volts. This heater comes with a
grounded (three-prong) plug. The
grounded plug must be used with a
grounded outlet. Do not use an
adapter in a two-slot wall outlet unless
the ground plug of the adapter
properly connects to a building ground.
Using the heater without a properly
grounded outlet or adapter could
result in an electric shock hazard. The
cord has a plug as shown at A in the
following figure. An adapter, as shown
at C, is available for connecting
three-blade grounding
type plugs to two-slot receptacles.
The green grounding lug extending
from the adapter must be connected
to a permanent ground such as a
properly grounded outlet box. The
adapter should not be used if a
three-slot grounded receptacle is
available.
2. TURNING THE HEATER ON
Plug in unit to power outlet，the POWER LED will light. To turn the heater
ON, press the MODE button, the heater will wait in ECO Mode.
3. HEATING MODES
Press the MODE button to toggle between the different modes: ECO, HIGH,
LOW and STANDBY. Heater exit from any mode to standby mode by
pressing the STANDBY button.
.
4. ECO MODE – 1500W/1000W
ECO mode is a computerized mode to optimize energy efficiency. It will
programmatically select between HIGH and LOW power mode to heat up
the room to the desired temperature in the most effective way. Once the
desired temperature is achieved, the heater will maintain the room to the set
temperature. ECO mode is the environmental friendly operating mode.
5. HIGH POWER MODE – 1500W
HIGH mode will control the heater to operate at high power until the room
reached the set temperature. The heater will stop heating and initiate
component cooling process before turning off the fan. Once the desired
temperature is achieved, the heater will maintain the room to the set
temperature.

6. LOW POWER MODE – 1000W
LOW mode will control the heater to operate at low power until the room
reached the set temperature. The heater will stop heating and initiate
component cooling process before turning off the fan. Once the desired
temperature is achieved, the heater will maintain the room to the set
temperature.
7. SETTING THE TEMPERATURE
Choose the desire Mode: ECO, HIGH, or LOW. 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.
Once the temperature is set, the heater will warm up the room using the selected
Mode. Heater will sample the room temperature every 4 minutes after the
desired temperature is reached.
8. Night Mode
Night mode is design for quiet operation in the night. When the surrounding
environment becomes dark, or the heater can't detect the light, it will turn
into the Night Mode automatically. In this mode, when the heater reached
the set temperature, it will sample the room temperature less frequently, 30
minutes per sample. When the heater detects the light, it will turn into the
ECO Mode automatically.
9. Display the room temperature
The display shows the set temperature all the time, press and hold the
MODE button and then press the button. The room temperature will
display for 30 seconds. It will return to set temperature after 30 seconds.

Remote Controller
Before Use
Battery has been installed in the remote control.
Before use please unplug the transparent plastic
sheet which was inserted in the remote control.
NOTE: Remove the battery if the remote control is
not to be used for a month or more. Battery left in
the unit may leak and cause damage.
Instructions for the Use of the IR Remote Control
The buttons on the remote controller functions in the
same manner as those on the control panel on the front of the heater. Set the
timer by using the remote control.
Setting the Timer
1. Press the TIMER button until 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 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,
pressing 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 the unit.
2. Light accumulation of 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 the heater in a clean, dry place when it is not in use.

Cleaning the electrostatic filter
The heater has an electrostatic filter located at the rear. The cleaning of the
filter should be performed once per month or as needed (when dust is visible
on the filter) to ensure efficient operation 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. Turn the stopper 90⁰clockwise/counterclockwise. (Figure 1).
4. Remove the filter by pulling down and out (Figure 2).
5. Clean the filter by vacuuming.
6. Replace the filter by sliding the filter into the gap.
Warning: Any other servicing needed must be performed by an authorized
service representative. Do not attempt to service the unit yourself.
Product Specifications
Model No.: DR-978
Voltage: 120V, 60Hz
Current: Maximum continuous draw:
12.5 amps
Output: 5200 BTUs
Power: 1500 Watts
Blower: Multi-blade; Low Noise, High Pressure
In The Box
DR Infrared Portable Space Heater
Foot (4 pcs)
Remote control (1 battery)
User’s Manual
Figure 2
Figure 1

Warranty Information
Register your product at our website:
Or visit DrHeaterUSA.com/register-your-heater
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At Dr. Heater USA, we are committed to bringing top quality alternative &
supplemental heating products to our customers.
Note: There may be a trace of smoke or odor when the unit is first operated.
Do not be alarmed. This indicates a drop of oil fell on the interior coils during
the manufacturing process. It will quickly evaporate and should not recur.
How long is the warranty?
This heater comes with a THREE-YEAR LIMITED COMPONENT WARRANTY.
If your unit does not appear to be working properly, please contact our service
center by calling 1-800-317-1688. Prior to your call, we encourage you to visit
our service related website www.DrHeaterUSA.com for troubleshooting tips
and service instructions if needed.

Dr. Heater USA
860 Mahler Road
Burlingame, CA 94010
Tel: [phone]
EMAIL: [e-mail]
Dr Heater USA
@DrHeaterUSA
Dr. Heater USA
Dr. Heater USA

QUESTIONS AND ANSWERS
If the heater cycles ON/OFF without heating:
Please note: This is a smart heater that monitors the room temperature and
produces heat only when needed.
You can set the desired room temperature with the heater in ECO mode. (The
factory default setting is 68 °F.) For an example of how the heater works, let’s
say you set the temperature for 70 °F, the heater will run on HIGH until the
room temperature reaches 70°F. The heater will switch to run on LOW for 10
minutes. And then the unit will turn to NAP mode for saving energy, the heater
will turn off when the room temperature is equal or greater than 69°F, the
heater will run on HIGH power again when the room temperature drops to 68°F.
(Note: The heater remains on STANDBY as long as you do not POWER OFF).
As the heater remains on STANDBY, it will read the room temperature every 5
minutes by running the heating 40 seconds and fan 60 seconds. During this
process, the fan also blows out the residual heat from inside the chamber to
ensure an accurate temperature reading of the room. If the room temperature
is at 72 °F (or higher), the heater will remain on STANDBY. It will repeat this
sensing cycle, reading the room temperature, every 5 minutes. However, if the
room temperature drops 2 degrees lower than the set temperature, the heating
function will turn the heater ON and the fan will blow warm air.
If the heater cycles but doesn’t produce heat for hours:
If the temperature is set lower than room temperature, the heater will perform
only the sensing cycle and the heater will not turn on in the heating function. To
have the heater turn on, always set the desired temperature higher (2°+) than
the room temperature.

How to turn off the heater:
Switch to STANDBY mode or POWER OFF the heater.
Does the blower cycle use much electricity?
The blower fan will run for 60 seconds every 5 or 30(night mode) minutes to
clear residual heat inside the chamber, while at the same time measuring the
room temperature. This does not use much power to operate.
Why does the blower fan keep running after I have pressed the power
OFF button?
The blower fan will continue to run until the heat chambers cool down. After 90
seconds the fan will shut off automatically.
What if the heater’s airflow seems to have diminished?
Please ensure the rear intake is not blocked and that the filter is clean. Please
follow the filter maintenance procedure to clean the filter.
Once the heater is turned on, how long will it take to heat my room?
This heater can heat up a large room. Remember that with any type of heating
process, there are many variables such as the size of the room, how well the
room is insulated, how many doors and windows there are, the amount of bare
concrete (which acts as a heat sink with any type of heating), the opening and
closing of an exterior door, the outside temperature, etc. Please remember that
this is a zone heater and is meant to be used as a supplemental heating source
only.
Can I use the heater to heat multiple rooms at the same time?
Keep in mind that heating will vary based on how open your floor plan is and
the size of the rooms involved. We have heard from customers that with the
help of ceiling fans, they have been able to heat multiple rooms simultaneously
by placing the unit in a central room. We suggest you give it a try and see what
works best for you.

My home is not well insulated; will this heater help me?
Yes, but it may take a little longer to heat the room. The outside temperature
will also have an impact on heating time. Once the room has reached the
desired temperature, it will cycle on and off accordingly.
Can the heater be used in a bathroom?
It is not recommended due to a bathroom’s high level of moisture.
Can the heater be used in a basement or garage?
Yes, but keep in mind that rooms with little insulation will not retain the heat as
efficiently. Bare concrete floors, which act as a heat sink with any type of
heating, will absorb some of the heat. However, placing the heater a few feet
above the floor will allow for more efficient heating.
Can I use more than one heater at a time?
Yes, but please make sure the heaters are not on the same circuit. Each heater
and appliance should be on its own circuit.
Can I use the heater and another appliance at the same time?
Yes, as long as they are not on the same circuit. This heater is considered to be
an appliance. You should not run more than one large appliance on a single
circuit breaker. Your appliances, such as a freezer, refrigerator, microwave
oven, washing machine, dryer and others, should not share a circuit breaker.
Can I use the heater on a job or construction site?
This heater is not designed to be used in a high dust construction environment.
Using the heater for this purpose will void your warranty.
Can I move the heater around while it is operating?
It is not recommended to move any portable heater while it is operating. We
recommend moving the heater only once the fan has completely turned off.
What is the life expectancy for the heater?
This heater uses one infrared tube (which is rated for 20,000 hours and up),
and one PTC element (which is rated for 80,000 hours and up).

What is zone heating?
Zone heating focuses heat where people spend the most time. After all, there is
no point in heating multiple rooms to +68 degrees when not in use.
Can I use an extension cord, surge protector, or power strip with my
heater?
No. The DR. INFRARED HEATER is designed to plug directly into a grounded
120V 15 Amp or higher circuit receptacle. Never use with an extension cord or
relocatable power tap (outlet/power strip).
How many kilowatts per hour does the heater use?
The DR. INFRARED HEATER MODEL DR-978 uses approximately
1.35 kilowatts per hour.
What is the BTU Rating for the heater?
The DR. INFRARED HEATER MODEL DR-978 is approximately 5200 BTUs.
The power cord feels warm to the touch; should I be concerned?
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 even a fire.
I don’t have a grounded outlet; can I use a cord adapter or remove the
grounding plug?
NO. If you don’t have a grounded outlet, contact a licensed electrician in your
area for advice. Removing or altering any part of the heater is unsafe and will
also void your warranty.
V.06.12.2019