Assembled in USA
gdaheat.com
Fan-forced
heater (CS)
Thank you for your purchase! Question or problem? Let us solve it with a single
phone call, email or online chat! We’ll save you a trip back to the store!
Customer Service:
Phone: 888-346-7539 (from US or Canada)
Email: cs@glendimplexamericas.com
OWNER’S GUIDE
High output
fan-forced
heater (CST)
SAVE THESE INSTRUCTIONS
IMPORTANT INSTRUCTIONS
2
KNOW YOUR VOLTAGE!
1. Read all instructions before install-
ing or using this heater.
2. This heater is hot when in use. To
avoid burns, do not let bare skin touch
hot surfaces. Keep combustible mate-
rials, such as furniture, pillows, bed-
ding, papers, clothes, etc. and cur-
tains at least 3 feet (0.9 meters) from
the front of the heater and keep them
away from the sides.
3. Extreme caution is necessary when
any heater is used by or near children
or invalids and whenever the heater is
left operating and unattended.
4. Do not operate any heater after
it malfunctions. Disconnect power
at service panel and have heater
inspected by a reputable electrician
before reusing.
5. Do not use outdoors.
6. To disconnect heater, turn control(s)
to o, and turn o power to heater cir-
cuit at main disconnect panel.
7. Do not insert or allow foreign ob-
jects to enter any ventilation or ex-
haust opening as this may cause an
electric shock or fire, or damage the
heater.
8. To prevent a possible fire, do not
block air intakes or exhaust in any
manner.
9. A heater has hot and arcing or
sparking parts inside. Do not use it in
areas where gasoline, paint, or flam-
mable vapors or liquids are used or
stored.
10. Use this heater only as described
in this manual. Any other use not rec-
ommended by the manufacturer may
cause fire, electric shock, or injury to
persons.
11. This heater must be installed in a
fixed, permanent location.
When using electrical appliances, basic precautions should always be
followed to reduce the risk of fire, electric shock, and injury to persons, including
the following:
120 volt
single-pole breaker
240 volt
double-pole breaker
WARNING: Connecting a heater to a voltage higher than what’s listed on its
rating label will destroy the heater and could start a fire. A heater will not heat
properly when connected to a voltage lower than what’s listed on its rating
label.
If you are uncomfortable working with electricity, running electrical supply wire
or installing a circuit breaker, please consult a licensed electrician. Make sure
power to the heater is turned o at the main disconnect panel whenever doing
any work on a heater. Serious injury or electrocution can result from electric
shock.
• CHECK YOUR BREAKER! If you’re replacing an existing heater, check the
labels of the old heater and use the same voltage.
Unanswered questions? Call our technical support 888-346-7539.
INSTALLATION INSTRUCTIONS
3
TOOLS REQUIRED
1. All electrical work and materials
must comply with the National
Electric Code (NEC), the Occu-
pational Safety and Health Act
(OSHA), and all state and local
codes. Canadian installations must
comply with Codes Canada and
provincial codes.
2. Use copper conductors only.
3. DO NOT install the heater directly
above bathtub or sink. DO NOT install
in shower stall area. Manufacturer
recommends installing your heater
at least 2 feet (61 cm) away to
prevent contact with water.
4. Heater must be installed in a wall
can:
Model CS - wall can models
CC or CCSM
Model CST - wall can model
CTC (WC1)
5. DO NOT install the heater in a floor,
below a towel bar, behind a door, or
anywhere the air discharge may be
blocked in any manner.
6. To reduce the risk of fire, do not
store or use gasoline or other
flammable vapors and liquids in the
vicinity of the heater.
7. Connect grounding lead to ground-
ing screw provided. Keep all foreign
objects out of heater.
8. CAUTION – High temperature,
risk of fire, keep electrical cords,
drapery, furnishings and other
combustibles at least 3 feet (0.9
m) from the front of the heater and
away from the side and rear.
Tape Measure
Straight and Phillips
Screwdrivers1½" Wood ScrewsWire Strippers Wire Connectors
½" Cable Clamp
Connector
Volt Meter
Drill and Drill Bits
Stud Finder
A multi-purpose tool or something to cut your existing drywall or gypsum board.
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PARTS OF YOUR HEATER
built-in thermostat
(optional)
heater element
fan and
motor
high-temperature
safety shutos
• Verify power has been turned o before starting any work!
• Model CS can be mounted with the element up, or with the element on the left. For ceiling installa-
tion, see page 5. For multiple heater wiring, see page 6. All the fan-forced heaters have a minimum
clearance of 10" (25.4 cm) from the ceiling and 4' (1.2 m) from sprinkler heads.
• Model CST can only be mounted with the elements up. It cannot be mounted in the ceiling.
• For cleaner performance and longer heater life, install your heater 12 inches (30.5 cm) from the floor.
• All models can be installed to be Americans with Disabilities Act (ADA) compliant. Check your state
and local requirements.
• A thermostat is required for models that do not come with a built-in thermostat. An electronic wall
thermostat is recommended for ultimate comfort and energy savings.
• The wall can label arrows show the correct mounting orientation (arrows must point up).
If you haven’t installed drywall yet, make sure the front of the wall can extends beyond the front edge of
the wall stud to match the drywall depth (Figure 3).
If you already have drywall installed, place the can into the cutout so the front is flush with the drywall.
Fasten the wall can to the stud with 2 screws (Model CS) or 4 screws (Model CST) (not included),
through holes provided in the wall can (Figure 3). As an option on model CS, the foam pad provided
may be attached to the side of the wall can to square the wall can to the stud (See Figure 3).
STEP 3
Mount the wall can
STEP 1
Cut a hole in the wall next to a wall stud
ADJACENT
WALL
PARED
ADYACENTE
¾"
(1.9 cm)
Min.
ADJACENT
WALL
¾"
(1.9 cm)
Minimum
attach foam pad here (Model CS only)
STEP 2
Locate or route electrical supply wires
If you’re wiring a wall thermostat, route the electrical supply wire from the circuit breaker to the wall
thermostat, and then to the heater location. If your heater has a built-in thermostat, route the electrical
supply wire from the circuit breaker directly to the heater location.
Remove a knockout from the wall can and attach the supply wire with a cable clamp connector (not
included) leaving a minimum of 6 inches wire lead (See Figure 3).
INSTALLATION INSTRUCTIONS
4
Figure 3
View from top of wall can
If you haven’t installed drywall yet, skip this step.
TIPS BEFORE YOU BEGIN
Figure 1
Model CS
Figure 2
Model CST
front of wall can extends beyond front
edge of wall stud to match drywall depth
drywall
wall
stud
twist with screwdriver
to remove one of the
knockouts
attach supply wire
with a cable clamp
connector
fasten with wood screws:
2 for Model CS (one
side); 4 for Model CST
(both sides)
INSTALLATION INSTRUCTIONS
5
INSERT THE HEATER ASSEMBLY IN THE WALL CAN
Mount The Wall Can
STEP 1
Important:
1. Only for Model CS up to 1,500 Watts –
MAXIMUM.
2. Do not mount the heater in low
density berboard or false ceilings.
3. Models with a built-in thermostat are
not recommended.
Fasten the wall can to ceiling rafters on any
two sides (See Figure 6) with a minimum of
4 screws (not included). You may need to
install an additional rafter perpendicular to
your ceiling rafters. The front edge of the wall
can must extend beyond the front edge of the
ceiling rafter(s) to match the drywall depth.
Route Supply Wires
STEP 2
Important: Supply connections must use wires suitable for at least 167˚F (75˚C) in the ceiling.
Route the electrical supply wire from the circuit breaker to the wall thermostat, and then to the wall can.
Remove a knockout from the wall can and attach the supply wire with a cable clamp connector (not
included) leaving a minimum of 6 inches wire lead (See Figure 3).
Continue to STEPS 4 and 5 above.
STEP 1
STEP 1
Wire connections
STEP 4
Install Grill
STEP 5
Attach grill with screws provided. If you have a built-in thermostat, slide thermo stat knob onto shaft. If
you have a model without a thermostat, snap in the grill plug provided.
Turn power on at the main disconnect panel.
Proceed to OPERATING INSTRUCTIONS.
1. Your heater has two connection wires on the back.
Your supply wire has two connection wires and a
supply ground wire.
A. Connect supply ground wire to grounding screw
in wall can (See Figure 4 or 5).
B. Connect one supply wire to one heater wire with
a wire connector (not included):
For 240 or 208 volts, it doesn’t matter which heater
wire. Both supply wires (black and white) are hot. Wrap
supply (white) wire with black tape to identify it as hot
(Figure 4).
For 120 volts, connect the neutral (white) supply wire
to the white heater wire (Figure 5).
C. Connect the remaining supply wire to the remain-
ing heater wire with a wire connector (not included)
(See Figure 4 or 5).
2. Turn the heater back around and insert the bottom
edge of the heater assembly into the D-shaped tabs
at the bottom of the wall can.
3. Push all wires back into the bottom of the wall can.
Make sure connections are tight and that none of
the wires are caught between the motor and the wall
can.
4. Attach the heater assembly at top of the wall can
with screw provided.
CEILING MOUNT (MODEL CS ONLY)
Figure 6
(Model CS only)
wall can
6" (15.2 cm)
Minimum
6" (15.2 cm)
Minimum
A
B
C
A
B
C
Figure 5
120 volt
Figure 4
240 volt
6
WARRANTY
For more eective and safer operation and to
prolong the life of the heater, read the Owner’s
Guide and follow the instructions. Failure to
properly maintain the heater will void any warranty
and may cause the heater to function improperly.
LIMITED TWO YEAR WARRANTY: Manufactur-
er will repair or replace any Fan-forced (CS) or
High-output Fan-forced (CST) heater found to be
defective within two years after the date of pur-
chase.
These warranties do not apply:
1. Damage occurs to the product through improper
installation or incorrect supply voltage;
2. Damage occurs to the product through improper
maintenance, misuse, abuse, accident, or
alteration;
3. The use of unauthorized accessories or unau-
thorized components constitutes an alteration and
voids all warranties. Refer to website or call cus-
tomer service at 888-346-7539 for list of autho-
rized accessories and components.
4. Manufacturer’s warranty is limited to repair or
replacement.
5. In the event Manufacturer elects to replace any
part of your product, the replacement parts are
subject to the same warranties as the product. The
installation of replacement parts does not modify or
extend the underlying warranties. Replacement or
repair of any product or part does not create any
new warranties.
If you believe your product is defective, please
contact Manufacturer during the warranty period,
for instructions on how to have the repair or
replacement processed.
Parts and Service
Visit gdaheat.com/parts for information on where to
obtain parts and service.
INSTALLATION INSTRUCTIONS
To register your product, visit gdaheat.com/register
1. Route the electrical supply wire from the circuit breaker to the wall thermostat. At the wall can of
heater #1, attach two sets of electrical supply wires with two cable clamp connectors (not included),
leaving a minimum of 6 inches wire lead. One set of electrical supply wire goes to the wall thermostat
and the other set goes to heater #2 (See Figure 7).
2. There are two supply ground wires in the wall can of heater #1. You’ll need to add a small piece of
copper wire (not included) to make the 3-wire connection with the ground screw (See Figure 7).
3. For heater #1, connect each heater wire to one of the supply wires going to the thermostat, and
to one of the supply wires going to the heater #2. Both wires from heater #1 must have a 3-wire
connection.
MULTIPLE HEATERS WITH ONE THERMOSTAT (MODEL CS ONLY)
4. For heater #2, make the connections in the wall can as shown in Figure 7 above. Proceed with STEP
4 Wire connections, number 2 on page 5.
5. Turn power back on at the main disconnect panel.
6. Proceed to OPERATING INSTRUCTIONS.
Figure 7
More than one heater can be wired in parallel on the same circuit breaker (be sure to check national and
local codes for safety requirements). Additional electrical supply wire and cable clamp connectors are
required, and you’ll need to use a wall thermostat. When wiring multiple heaters to one thermostat, the
heaters must be in the same room and be spaced a minimum of three feet apart.
The maximum amperage load you can put on one circuit breaker is limited to either 80% of the circuit
breaker capacity, or the maximum amperage rating of the thermostat, whichever is lower.
heater #2
heater #1
This set of wires
goes to the wall
thermostat
additional ground wire is used here to make the 3-wire connection
This set of wires goes
to heater #2
back of heater
assembly
wall
can
back of heater
assembly
wall can
Reduce-Reuse-Recycle
This product is made primarily of recyclable materials. You can reduce your carbon footprint by recycling
this product at the end of its useful life. Contact your local recycling support center for further recycling
instructions.
7
More frequently asked questions on our website here: gdaheat.com/FAQ
1. Make sure all wires are properly
connected and installation is com-
plete before you turn on the heater.
2. Do not operate without grill.
3. Do not tamper with the high-
temperature safety shuto.
How to operate your heater
The room temperature is controlled by a thermostat located either on the wall, or on the heater. Once
installation is complete and power is on, follow the steps below for your thermostat.
If you have a wall or built-in thermostat with a knob:
1. Turn the thermostat knob all the way to the right.
2. When the room reaches your comfort level, turn the knob to the left, just until it clicks and the
heater turns o. The heater will automatically keep the room temperature around this setting.
3. To reduce the room temperature, turn the knob to the left. To increase the room temperature, turn
the knob to the right.
If you have an electronic wall thermostat, follow the instructions in the programming and operating
guide included with your thermostat.
OPERATING INSTRUCTIONS
Complete installation
After installation, turn your heater to the highest setting and let it run for 30 minutes. Some smoking may
occur as the element initially burns o residue from manufacturing.
If your heater shows signs of overheating, such as glowing red or repeatedly getting unusually hot and
shutting o, immediately turn o the circuit breaker and review the “KNOW YOUR VOLTAGE” section
or call us.
If the high-temperature safety shuto trips more than once a day, replace the heater.
Heating Element
Model CS
High-temperature safety shuto
Motor
Heater with
built-in thermostat
High-temperature safety shuto
Model CST
High-temperature safety shuto High-temperature safety shuto
Heating Element
High-temperature safety shuto
Heating Element
High-temperature safety shuto
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shuto
Motor
Heater with
built-in thermostat
High-temperature safety shuto
Model CST
High-temperature safety shuto High-temperature safety shuto
Heating Element
High-temperature safety shuto
Heating Element
High-temperature safety shuto
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shutoff
Motor
Heater with
built-in thermostat
High-temperature safety shutoff
Model CST
High-temperature safety shutoffHigh-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Heating Element
High-temperature safety shutoff
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
Heating Element
Model CS
High-temperature safety shuto
Motor
Heater with
built-in thermostat
High-temperature safety shuto
Model CST
High-temperature safety shuto High-temperature safety shuto
Heating Element
High-temperature safety shuto
Heating Element
High-temperature safety shuto
Motor
Motor
Heater with
built-in thermostat
WITH DOUBLE-POLE WALL
THERMOSTAT ALTERNATE
WITH SINGLE-POLE WALL
THERMOSTAT ALTERNATE
To/From Heater
To/From Heater
INTERNAL HEATER WIRING DIAGRAMS
8
Rev 09/30/20 #730021
Symptom Problem Solution
If you are uncomfortable working with electricity, running electrical supply
wire or installing a circuit breaker, please consult a licensed electrician.
TROUBLESHOOTING
© 2020 Glen Dimplex Americas Printed in USA
Heater
doesn’t work
at all.
1. Supply connections are loose.
2. Heater has tripped one of its
high-temperature safety shutos.
3. Heater has tripped its sec-
ondary high-temperature safety
shuto.
4. Supply circuit is faulty.
1. Turn o power at main disconnect panel. Inspect and/
or tighten all the wire connectors inside the heater and at
any connection points inside junction boxes or at the wall
thermostat.
2. TO RESET: Turn power o at main disconnect panel. Allow
20 minutes to cool. Make sure heater is not blocked and is
clean. Restore power. If the high-temperature safety shuto
trips more than once a day, replace the heater.
3. Replace heater.
4. Call a licensed electrician.
Breaker trips
immediately
after install-
ing heater.
1. A short circuit exists in the
electrical supply wires or heater
wiring.
2. Circuit breaker and heater are
not the same voltage.
3. Circuit is overloaded.
4. Supply circuit is faulty.
1. An incorrect connection in the heater or electrical supply
wires may cause sparking or arcing. Inspect all heater and
electrical supply wiring insulation for damage or call an
electrician.
2. Double check the voltage of the heater to make sure it
matches the voltage of the circuit. Replace heater with a
model that is 240 volts.
3. Use a lower wattage heater, or reduce the number of
heaters on the circuit.
4. Call a licensed electrician.
Heater blows
cold air or
doesn’t get
hot.
1. Element has failed.
2. Only one side heats and the
other side has tripped one of its
high-temperature safety shutos
(Model CST only).
1. Replace heater.
2. TO RESET: Turn power o at main disconnect panel. Allow
20 minutes to cool. Make sure heater is not blocked and is
clean. Restore power. If the high-temperature safety shuto
trips more than once a day, replace the heater.
Heater
smells after
installation
or not being
used.
1. Odor from element
manufacturing process.
2. Dust or lint inside the heater.
3. Supply connections are loose.
1. In a new installation, some smoking may occur as the ele-
ment initially burns o residue from manufacturing. It typically
goes away within several hours.
2. Clean heater (see “MAINTAINING YOUR HEATER” on
page 8 for instructions).
3. Turn o power at main disconnect panel. Inspect and/
or tighten all the wire connectors inside the heater and at
any connection points inside junction boxes or at the wall
thermostat.
Fan/motor
doesn’t spin
or spins
slow.
1. Circuit breaker is 120 volts and
heater is 240 volts.
2. Defective motor or motor out of
alignment.
1. Double check the voltage of the heater to make sure it
matches the voltage of the circuit. Replace heater with a
model that is 120 volts.
2. Replace motor.
Heater
doesn’t turn
o.
1. Thermostat is defective.
2. No thermostat hooked up to
control heater.
3. Incorrect heater wattage for
room size.
1. Replace thermostat.
2. A thermostat is required for all fan heaters. Purchase a
built-in or wall thermostat for your heater.
3. Install higher wattage model or additional heaters if circuit
allows.
MAINTAINING YOUR HEATER
High-temperature safety shuto
All CS and CST fan-forced heaters come with built-in high-temperature safety shutos that stop electricity
flowing to the heater if it gets too hot inside. See TROUBLESHOOTING below if you’re experiencing
problems with your heater.
Clean heater at least every 6 months or as required. Do not lubricate motor.
WARNING: Risk of electrical shock, turn o power before removing grill.
1. Turn o power at the main disconnect panel.
2. Wait for the heater to cool.
3. Remove thermostat knob (if any) and grill.
4. Wash grill with hot soapy water and dry.
5. Blow air through the heating element with a
hair dryer or shop vacuum on blow cycle.
6. Clean the fan with a vacuum cleaner.
7. Replace grill and thermostat knob (if any).
8. Turn power back on at the main disconnect
panel.
Any service other than cleaning should be performed by an authorized service
representative.
