Comfort Zone CZ225ER Series User manual

Save These Instructions
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Models: CZ225ER Series
CZ230ER Series
Digital
Ceiling Mounted Heater
HARDWIRED INSTALLATION REQUIRED
This heater must be grounded and hardwired to a properly
sized current protection circuit breaker in accordance with
the (US) National Electric Code and local codes.
*Model pictured is CZ225ER.
Model purchased may look
slightly different.
Models
CZ225ER2C
CZ230ER2C
have 2
remote controls
Description
• Adjustable Heat Settings with Digital Thermostat
• Fan-Forced for Wide Heat Circulation
• Fan Only Setting for Year-Round Air Circulation
• 12-Hour Timer with Auto Shut-Off
• Horizontal and Vertical Air Flow with Tilt Feature
• Sturdy Heavy Gauge Steel Body
• Remote Control
• High Limit Thermal Cut-Out Switch

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INTENDED USE
Electric Utility heaters are designed to meet a variety of heating
requirements. This product is intended for indoor use only. Use only
with electrical wiring that is in good working order and that meets
applicable codes and ordinances.
If you have any questions whether your wiring is adequate, consult a
qualied electrician. Risk of re, overheating, malfunction, property
damage, injury or even death may result if not adhered to.
Use your heater-fan only with a working smoke detector located in the
vicinity of your heater-fan.
While using your heater-fan, you should follow the IMPORTANT
INSTRUCTIONS listed below. As part of those instructions, we have
used the word "WARNING" to indicate the level of hazard: WARNING
indicates a hazard which, if not avoided, could result in injury or death.
GENERAL SAFETY INFORMATION:
WARNING- Read and understand installation and operation
instructions and observe all safety instructions.
SAVE THESE INSTRUCTIONS
1. For supply connections, use only copper wire, see
SPECIFICATIONS.
2. Heater air ow must be directed parallel to, or away from adjacent
wall.
3. Observe wall, oor, and ceiling clearance requirements.
See Figure. 1.
4. All wiring must conform to national and local electrical codes in the
United States and the heater must be grounded as a precaution
against possible electrical shock. Heater circuit must be protected
with proper fuses or circuit breakers.
5. The mounting structure and the anchoring hardware must be
capable of reliably supporting the weight of the heater and, if used,
the mounting bracket.
6. All electrical power must be disconnected, and the main service box
must be locked before inspection, cleaning or servicing the heater.
This is a precaution to prevent serious shock.
7. This heater is not suitable for use in hazardous locations as dened
by the National Fire Protection Association (NFPA) in the United
States. This heater has hot and arcing (sparking) parts inside. Do
not use in areas where gasoline, paint, or ammable liquids are used
or stored.
8. This heater is not suitable for use in corrosive atmosphere such as
marine, greenhouses or chemical storage areas.
9. Do not install closer than 8 inches to a vertical surface. Do not
install less than 6 feet from the oor.
10. Extreme caution is necessary when any heater is used by or near
children or invalids and whenever the heater is left operating and
unattended.
11. Use this heater only as described in this manual. Any other use not
recommended by the manufacturer may cause re, electric shock, or
injury to persons.
WARNING- Improper installation or failure to follow the
procedures outlined in this instruction manual can result in
serious electrical shock.
READ & SAVE
THESE INSTRUCTIONS
WARNING: SHOCK HAZARD
Use your heater only in dry environments. This heater is not intended
for use in a bathroom, laundry area, or similar locations, or near sinks,
washing machines, swimming pools or other sources of water. Never
locate heater where it may fall into a bathtub or other water container.
Do not use heater outdoors. Do not use in damp environments such as
ooded basements.
WARNING: HOT SURFACES
Do not touch body of heater when in use. This heater is hot when in use,
to avoid burns, do not let bare skin touch hot surfaces. If provided, use
handles when moving this heater.
WARNING: FIRE HAZARD
Heater has hot and arcing or sparking parts inside. Do not use near
combustible materials or ammable gases or sources of heat. DO NOT
USE in areas where gasoline, paint or ammable materials are used or
stored. 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 keep them away from the sides and rear. Keep rear grille
away from walls or drapes so as to not block air intake. To prevent a
possible re, do not block air intakes or exhaust in any manner. Do not
use on soft surfaces, like a bed, where openings may become blocked.
Do not insert or allow foreign objects to enter any ventilation or exhaust
opening as this may cause an electric shock, re, or damage the heater.
WARNING: ELECTRICAL SHOCK HAZARD
Do not use with damaged wiring. Use with adequate electrical system
that is up to code.
Do not operate any heater with a damaged cord or plug or after heater
malfunctions, has been dropped or damaged in any manner. Do not
operate heater with a broken heating element or ceramic cone or any
visual imperfections. For repairs covered under warranty, see warranty
statement. For all other repairs contact Comfort Zone®Customer
Service by telephone or mail for information and assistance.
PET OWNERS NOTE:
The health of birds and some small pets are extremely sensitive to the
fumes given off during the initial use of many appliances. Although these
fumes are not harmful to humans, it is recommended that this heater
not be used around birds and small pets during its initial use until the
manufacturing corrosion coatings burn off.

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CZ230ER SERIES DIGITAL HEAVY DUTY 7,500W ELECTRIC UTILITY HEATER
WATTS SWITCH POSITION VOLTS (VAC) PHASE AMPS BTU/HOUR
7,500W HIGH (Default) 208-240V, 60Hz 1 31.3 25,590
N/A MEDIUM N/A N/A N/A N/A
6,250W LOW 208-240V, 60Hz 1 26 21,240
N/A FAN ONLY N/A N/A N/A N/A
AIR THROW HORIZONTAL 18 FT (APPROXIMATE)
RECOMMENDED CIRCUIT BREAKER 40 AMP or larger, in accordance with NEC and local codes.
RECOMMENDED WIRE SIZE 8 AWG, COPPER ONLY
RATED AT 167°F/75°C
or larger, hardwired in accordance with NEC and
local codes.
RECOMMENDED LUG TORQUES 40 IN-LBS or greater, in accordance with NEC and local codes
PRODUCT WEIGHT (APPROXIMATE) BETWEEN 25 TO 30 LBS
SPECIFICATIONS:
CZ225ER SERIES DIGITAL HEAVY DUTY 6,000W ELECTRIC UTILITY HEATER
WATTS SWITCH POSITION VOLTS (VAC) PHASE AMPS BTU/HOUR
6,000W HIGH (Default) 208-240V, 60Hz 1 24 20,470
4,500W MEDIUM 208-240V, 60Hz 1 18.1 15,360
3,000W LOW 208-240V, 60Hz 1 11.9 10,240
N/A FAN ONLY N/A N/A N/A N/A
AIR THROW HORIZONTAL 18 FT (APPROXIMATE)
RECOMMENDED CIRCUIT BREAKER 30 AMP or larger, in accordance with NEC and local codes.
RECOMMENDED WIRE SIZE 10 AWG, COPPER ONLY
RATED AT 167°F/75°C
or larger, hardwired in accordance with NEC and
local codes.
RECOMMENDED LUG TORQUES 35 IN-LBS or greater, in accordance with NEC and local codes
PRODUCT WEIGHT (APPROXIMATE) BETWEEN 25 TO 30 LBS
FOR CZ225ER AND CZ230ER SERIES
Figure 1
NOTE: Product dimensions are approximate and subject to change without notice.

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Series Model: CZ225ER
DIGITAL HEAVY DUTY 6,000W
ELECTRIC UTILITY HEATER
Series Model: CZ230ER
DIGITAL HEAVY DUTY 7,500W
ELECTRIC UTILITY HEATER
OPERATION AND TEMPERATURE SETTING:
1. This heater is designed to maintain a comfortable room
temperature. Always operate the heater in the upright
position following all instructions and recommendations
listed in this manual.
When the heater is turned on by pressing the POWER button,
it will operate on HIGH setting (6,000W) continuously.
The LED display panel will show the ambient temperature.
Press the MODE button on either the unit or remote to
change the heat setting to LOW (3,000W) then, press the
MODE button again to MEDIUM (4,500W). The fan will start
running about 10 seconds after initial start to push the heat
out. The sequence is HIGH-LOW-MEDIUM-FAN-ONLY. To
operate the unit on FAN ONLY setting, press the MODE
button again. In FAN ONLY mode, the LED display panel will
show FA to indicate the heater is in FAN ONLY mode.
From FAN ONLY mode, pressing the MODE button will
make the heater operate in HIGH setting again, and the
ambient temperature will appear on the LED display.
OPERATION AND TEMPERATURE SETTING:
1. This heater is designed to maintain a comfortable room
temperature. Always operate the heater in the upright
position following all instructions and recommendations
listed in this manual.
When the heater is turned on by pressing the POWER button,
it will operate on HIGH setting (7,500W) continuously.
The LED display panel will show the ambient temperature.
Press the MODE button on either the unit or remote to
change the heat setting to LOW (6,250W). The fan will start
running about 10 seconds after initial start to push the heat
out. The sequence is HIGH-LOW-FAN-ONLY. To
operate the unit on FAN ONLY setting, press the MODE
button again. In FAN ONLY mode, the LED display panel will
show FA to indicate the heater is in FAN ONLY mode.
From FAN ONLY mode, pressing the MODE button will
make the heater operate in HIGH setting again, and the
ambient temperature will appear on the LED display.
2. The temperature setting can be adjusted between 45°F (7°C) to 95°F (35°C). To change the temperature, press the TEMP+ or
TEMP - buttons on either the unit or the remote. (See Figure 2)
3. The temperature display will blink while it is being adjusted. When the desired temperature is reached, it will take about 5
seconds to accept the setting. Once the display stops ashing, the room temperature will reappear on the LED screen to
indicate the desired temperature is set.
4. In any temperature mode, the unit will stay in that mode, cycling on and off to maintain the set temperature. The heater will
reach the set temperature faster in HIGH setting.
5. The heater can be turned OFF by pressing the POWER button. Once the unit is turned off, the fan will continue to run to cool
down the unit and there will be a 90 seconds countdown on the digital display.
Figure 2
Temperature
Display
Temperature
Controls +/-
Power
Control
Switch
Control Panel Detail
(Enlarged for Clarity)
Figure 2
Control Panel Detail
(Enlarged for Clarity)
Temperature
Display
Temperature
Controls +/-
Power
Control
Switch
WARNING:
FOR INDOOR USE ONLY, IN A DRY LOCATION FREE OF GASOLINE, PAINT, FLAMMABLE LIQUIDS OR COMBUSTIBLE DUST OR
MATERIALS.
DO NOT USE EXTENSION CORDS
VERTICAL AIR FLOW:
The maximum recommended ceiling height
for effective vertical air ow is 11 ft.
HORIZONTAL/ANGLED AIR FLOW:
The maximum recommended ceiling
height for effective vertical air ow is 8 ft.
MAXIMUM MOUNTING HEIGHT USING BRACKET FOR:

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TIMER FUNCTION:
The Timer function allows you to set the length of operation from
1 to 12 hours. Each time the TIMER button is pressed the length
of operation will increase 1 hour. The duration the timer is set for
will be displayed on the LED screen in hour increments.
TO TURN THE TIMER FUNCTION OFF: Press the TIMER
Button continuously until the LED screen displays "O".
NOTE: The timer function is not an excuse to leave the heater
unattended.
NOTE: Heater will cycle on and off to maintain room temperature.
The rst time you operate the unit, it may smoke slightly. This is
due to residual cleaning agents used to clean the element when
the heater is manufactured. This is normal and does not indicate
a problem with the unit. This condition will stop after the heater
has been in operation for a few minutes.
FAHRENHEIT OR CELSIUS DISPLAY:
To switch the display between Fahrenheit and Celsius, press
the °F/°C on either the unit or the remote.
INSTALLING THE HEATER:
LOCATING THE HEATER:
Install the heater out of trafc areas, maintaining the clearances
stated in Figure 1 above. The air ow from the heater must not
be restricted or obstructed by any items in the room. When
more than one heater is used in an area, the heaters should be
arranged so that the air discharge of each heater supports the
air ow of the others to provide best circulation of warm air, as
indicated below in Figure 3.
BRACKET INSTALLATION FOR CZ225ER AND
CZ230ER SERIES:
Refer to Figures 4a and 4b.
1. Locate a ceiling joist or other rm structural element or
support to mount the heater and point at desired direction
of air ow.
2. Drill a ¼” pilot hole in the ceiling joist for the screw(s).
3. Place the screw(s) and washers as shown in the
Figures 4a or 4b.
Figure 4a: For Single-Screw Mounting (center bracket
hole only).
(If you want to swivel the heater, a longer Lag bolt may be
required to properly secure the heater, not included.)
Figure 4b: For Double-Screw Mounting (both off-center
Figure 3
Figure 4a: Single-Screw Mounting, To Allow Swivel
CEILING JOIST
WASHER
WASHER
BRACKET
3/8" DIAMETER
LAG BOLT
Figure 4b: Double-Screw Mounting, For Fixed Position
CEILING JOIST
WASHER
BRACKET
3/8" DIAMETER
LAG BOLT
holes are used).
HANGING THE HEATER IN THE BRACKET
1. Lift the heater into the mounting bracket and align the lower
bracket holes with the threaded holes nearest the heater’s
center.
2. Thread a large knob-screw through the hole on each side of
the bracket.
3. Aim the heater horizontally or tilted by aligning the upper
bracket holes with the top threaded holes on the heater
Figure 5
Use top slots/hole in
bracket and small
knob-screws if heater
is to be tilted down.
Adjust louvers up or
down to control air ow.
Remove screws from the
panel to access power
block, See Figure 7.

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and secure with the small knob-screws and tighten all.
See Figure 5.
CONNECTING THE POWER:
1. With the power off at the breaker, remove all screws from the
bottom lid for access to the electrical section of the heater.
2. Attach exible cable through a knock-out in the side of the
heater following NEC and local codes, See Figure 6 and
SPECIFICATIONS for recommended wiring and
circuit breakers.
NOTE: For certain applications, conduit may be required
3ft.
min.
12
7
34
12
If Heater is to
be turned
and wire is
inside conduit.
If Heater is to
be connected
with NM Cable.
If Heater is to
be connected
with Flexible
Conduit.
FLEXIBLE
CONDUIT
FLEXIBLE
NM CABLE
FLEXIBLE NM CABLE
CONNECTOR
(use per electircal codes)
FLEXIBLE CONDUIT
CONNECTOR
(use per electircal codes)
FLEXIBLE
CONDUIT
CONNECTOR
CONDUIT CONDUIT
CONNECTOR
Figure 6
(See Figure 6). Check local electrical codes. If you run the
wiring in conduit and wish to be able to turn the heater be sure
to purchase enough exible conduit to allow the heater to be
turned.
3. Pull enough wire into the heater and connect the wire to the
Power Block located in the electrical area of the heater,
See Figure 7.
4. Be sure to torque all terminal screws and power block lugs
tight, see SPECIFICATION and NEC/local codes, for
L1
L2
GROUND
(or bare copper)
HOT
HOT
Figure 7
required torque values, failure to do so can overheat the
power blocks.
5. Turn on power at the main circuit breaker panel. Notice the
YELLOW Power Indicator Light on the Control Panel will glow.
WARNING: It is advised that at the start of each heater season,
the power should be turned off at the circuit breaker and the
LI & L2 lug screws checked for tightness and proper torque.
The heater should be cleaned and checked for mechanical and
electrical integrity. See SPECIFICATION and NEC/local codes.
ADJUSTING AIR FLOW:
1. Swivel the unit- If mounted on a single center lag bolt Figure
4a, turn the entire heater and bracket assembly left or right.
2. Tilt the unit- Loosen the top Small Knob-Screws and thread
into provided holes in heater until tight. See Figure 5.
3. Adjust the louvers in front of the heater as desired. See
Figure 5.
NOTE: DO NO OPERATE THE HEATER WITH THE FRONT
LOUVERS CLOSED, DAMAGE TO THE HEATER COULD
RESULT.
SAFETY INSTRUCTIONS:
To start the heater, turn on the circuit breaker. The Power Indicator
light will light up to indicate there is power available. Press the
POWER button to turn the heater on. The heater will be in HIGH
setting by default. The heater indicator will illuminate, and the
LED display will show the default setting temperature 80°F.
1. The heater is HOT when in use. Do not let bare skin touch any
hot surfaces.
2. Keep combustible materials (furniture, pillows, bedding,
papers, clothes, curtains, and similar items) at least 3
feet (0.9m) from all sides and surfaces of the heater.
3. Do not use outdoors or in wet areas like bathrooms, laundry
areas or where it could fall into a swimming pool or other
container of water.
4. This heater is a 240V AC rated direct wired appliance. Never
use extension cords or relocatable power taps.

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CARE AND MAINTENANCE:
CLEANING THE HEATER:
1. Do not disassemble the heater to clean it.
2. The heater should be powered OFF and disconnected from
the power at the circuit breaker before attempting to clean
any portion of the heater.
3. The exterior can be cleaned with a cloth, brush and/or
vacuum.
4. The louvers, fan blade and heating element are delicate and
should not encounter hard items. They can be cleaned by
brush, vacuum and mild compressed air.
MAINTENANCE:
This Industrial Heater contains no user serviceable parts.
In the unlikely event that your heater should need service, please
contact: World and Main (Cranbury), LLC 324A Half Acre Rd.
Cranbury, NJ 08512 USA 800-221-6895
www.comfortzoneproducts.com
LIMITED WARRANTY
This unit is guaranteed to the original retail purchaser against
defects in quality or workmanship for a period of one year
from the date of original purchase. If this unit fails because
of a manufacturing defect within 30 days of purchase, return
the unit, with your receipt, to the retailer. After 30 days, but
within the warranty period, if the unit was purchased within the
continental United States, return it, freight prepaid, to World
and Main for repair or replacement. If the unit was purchased
outside the continental United States, return the unit to the place
of purchase. This warranty does not cover damage caused
by misuse, abuse, overheating or alteration. Repairs made
by anyone other than World and Main are not covered in this
warranty. World and Main will not be held liable for any losses
due to neglectful operation. All implied warranties, including
the warranties of merchantability and of tness of purpose, if
applicable, are hereby limited in duration to the period of one
year from the date of original retail purchase. Some states do
not allow limitations on how long an implied warranty lasts,
so the above limitations may not apply to you. Incidental or
consequential damages arising from a breach of either express
or implied warranties are hereby disclaimed and excluded. Some
states do not allow the exclusion of limitation of incidental or
consequential damages, so this limitation or exclusion may not
apply to you. Upon the expiration of this warranty all such liability
will terminate. No other warranties are expressed or implied.
This warranty gives you specic legal rights, and you may also
have other rights which vary from state to state. No informal
dispute settlement mechanisms are available. This limited
warranty is given in lieu of all other warranties.
Manufactured for:
World and Main (Cranbury), LLC
324A Half Acre Rd.
Cranbury, NJ 08512 USA
800-221-6895
www.comfortzoneproducts.com
Rev. 06/06/2022

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Error Code Possible Cause Recommended Solution Clearing Error Codes
E1 (Fan
Blade Not
Spinning)
Overheat
Safety
Cut-Out
(Resettable)
Insufcient Clearance Around
Heater
Ensure Heater is Installed with Sufcient Clearance All-Around, See Figure 1.
*6 feet minimum mounting from oor
*8 inches minimum from rear of heater
*13 inches minimum from side of heater
To Clear E1 Code:
1. Power Off Heater
2. Switch Off Breaker (or
Remove Fuse)
3. Allow Heater to Cool
(~15 minutes)
4. Switch on Breaker and
wait 1 minute
5. Power On Unit and follow
Instruction Manual for
Normal Operation
If E1 code persists please
contact manufacturer to
arrange product return.
Obstructed Vent Remove any objects on heater or adjacent to heater vents. Do not block intake
or exhaust by columns, machinery, etc. Ensure 24 inches minimum distance
from heater exhaust (front) to any object
Fan Not Operational
(Fan Blade Not Spinning)
Disconnect power!
Inspect Fan Blade (Rear of Heater) for foreign or dislodged object(s) preventing
rotation. Remove Rear Grille and clear interference, re-attach Rear Grille.
Disconnect power!
Open Hinged Bottom Cover by removing screws. Inspect Circuit Card
Assembly (adjacent to Supply Connection Terminal Block) for loose or
detached "plug-in" electrical connector. Re-attach securely, close Bottom
Cover and re-install screws.
Inadequate Copper Wire Gauge
for Supply Connections
(Fan Operates at Reduced Speed
Due to Insufcient Power Input)
Consult a licensed electrician.
Ensure Adequate Wire Gauge for Supply Connections
Excessive Distance from Power
Source
(Fan Operates at Reduced Speed
Due to Current Loss)
Inadequate Current (Amp) Rating
on Breaker
Consult a licensed electrician.
Ensure adequately sized Current Breaker or Fuse per National & Local
Electrical Codes.
Improper Heater Shut Down Do not power off heater using circuit breaker.
Fan motor is designed to operate for a short period of time after heating
element shuts off to prevent an overheat condition.
E2 Room
Temp Sensor
Open Circuit
Detached or Loose Connection at
Room Temperature Sensor
Disconnect power!
* Detach Fan Grille by removing screws. Locate Temp Sensor
Thermocouple on Housing (below Fan Motor Bracket). Ensure wire pair &
thermocouple "tip" are free of damage. Re-attach Grille by re-installing screws.
* Open Bottom Cover by removing screws. Inspect Circuit Card Assembly
(adjacent to Supply Connection Terminal Block) for loose or detached "plug-in"
electrical connector. Re-attach connectors securely. Close Bottom Cover and
re-install screws.
To Clear E2 & E3 Codes:
1. Power Off Heater
2. Switch Off Breaker
(or Remove Fuse)
3. Switch on Breaker and
wait 1 minute
4. Power On Unit and follow
Instruction Manual for
Normal Operation
If E2 or E3 code persists
please contact manufacturer to
arrange product return.
E3 Room
Temp Sensor
Short Circuit
Moisture Entrapment in Heater Not intended for outdoor use. Not intended for use in bathrooms, shower
rooms, laundry facilities or other similar indoor locations.
Disconnect power!
Open Bottom Cover by removing screws. Allow unit to fully dry. Re-attach
securely, close Bottom Cover and re-install screw(s).
Electrical Short-to Ground at
Room Temperature Sensor
Disconnect power!
* Detach Fan Grille by removing screws.
Locate Temp Sensor Thermocouple on Housing (below Fan Motor Bracket).
Ensure wire insulation is not damaged and internal conductor is not exposed.
Re-attach Grille by re-installing screws.
No Power or
Low Power
to Heater
Supply Connections Improperly
Wired
Consult a licensed electrician.
Ensure Supply Connections L1, L2, L3 & Ground are secure. Torque per NEC
(L3 provided on certain models).
Re-Start Unit.
Follow Instruction Manual for
Normal Operation.
Insufcient Service Loop on
Supply Connections
Consult a licensed electrician.
Ensure sufcient service loop in supply wires to maintain secure electrical
connections to swivel heater on bracket (particularly when using rigid or
semi-rigid conduit).
Electrical Short-to Ground Consult a licensed electrician.
Ensure Supply Connections (L1, L2 & L3) are not contacting Housing (Ground)
(L3 only provided on certain models).
ERROR CODE TROUBLESHOOTING GUIDE: