Trotec TEH 20 T User manual

TRT-BA-TEH20T-TEH30T-TC220119TTRT01-003-EN
TEH 20 T / TEH 30 T
EN
ORIGINAL INSTRUCTIONS
ELECTRIC HEATER

2 EN
electric heater TEH 20 T / TEH 30 T
Table of contents
Notes regarding the instructions ..........................................2
Safety .....................................................................................2
Information about the device................................................4
Transport and storage...........................................................5
Assembly and installation.....................................................6
Operation ...............................................................................6
Errors and faults....................................................................7
Maintenance ..........................................................................9
Technical annex...................................................................10
Disposal ...............................................................................13
Declaration of conformity ...................................................13
Notes regarding the instructions
Symbols
Warning of electrical voltage
This symbol indicates dangers to the life and health of
persons due to electrical voltage.
Warning of hot surface
This symbol indicates dangers to the life and health of
persons due to hot surface.
Warning
This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.
Caution
This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.
Note
This signal word indicates important information (e.g.
material damage), but does not indicate hazards.
Info
Information marked with this symbol helps you to carry
out your tasks quickly and safely.
Follow the manual
Information marked with this symbol indicates that the
instructions must be observed.
You can download the current version of the instructions via the
following link:
TEH 20 T
https://hub.trotec.com/?id=44018
TEH 30 T
https://hub.trotec.com/?id=44019
Safety
Read this manual carefully before starting or using the
device. Always store the manual in the immediate vicinity
of the device or its site of use.
Warning
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may
result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future
reference.
This appliance can be used by children aged from
8years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and
user maintenance shall not be made by children
without supervision.
Warning
Children of less than 3years should be kept away from
the device unless continuously supervised.
Children aged from 3years and less than 8years shall
only switch on/off the appliance provided that it has
been placed or installed in its intended normal
operating position and they have been given
supervision or instruction concerning use of the
appliance in a safe way and understand the hazards
involved.
Children aged from 3years and less than 8years shall
not plug in, regulate and clean the appliance or
perform user maintenance.

EN 3
electric heater TEH 20 T / TEH 30 T
Warning
Do not use the device in small rooms if persons are
present who cannot leave the room independently and
who are not under constant supervision.
• Do not use the device in potentially explosive rooms or
areas and do not install it there.
• Do not use the device in aggressive atmosphere.
• Only put up the device in an upright, stable position on firm
ground.
• Let the device dry out after a wet clean. Do not operate it
when wet.
• Do not use the device with wet or damp hands.
• Do not expose the device to directly squirting water.
• Never insert any objects or limbs into the device.
• Do not cover the device during operation.
• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.
• Do not sit on the device.
• This device is not a toy. Keep away from children and
animals. Do not leave the device unattended during
operation.
• Check accessories and connection parts for possible
damage prior to every use of the device. Do not use any
defective devices or device parts.
• Ensure that all electric cables outside of the device are
protected from damage (e.g. caused by animals). Never
use the device if electric cables or the power connection
are damaged!
• The mains connection must correspond to the
specifications in the Technical annex.
• Insert the mains plug into a properly fused mains socket.
• Observe the device's power input, cable length and
intended use when selecting extensions to the power
cable. Completely unroll extension cables. Avoid electrical
overload.
• Before carrying out maintenance, care or repair work on
the device, remove the mains plug from the mains socket.
Hold onto the mains plug while doing so.
• Switch the device off and disconnect the power cable from
the mains socket when the device is not in use.
• Do not under any circumstances use the device if you
detect damages on the mains plug or power cable.
If the power cable is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
Defective power cables pose a serious health risk!
• When positioning the device, observe the minimum
distances from walls and other objects as well as the
storage and operating conditions specified in the Technical
annex.
• Keep a safety distance of at least1m between the air inlet
and the air outlet of the device and all combustible
materials such as textiles, curtains, beds and sofas.
• Make sure that the air inlet and outlet are not obstructed.
• Do not place the device on combustible ground.
• Only use original spare parts, for otherwise safe and
functional operation cannot be ensured.
• Allow the device to cool down before transport and/or
maintenance work.
• The device must not be used with a programming switch,
timer, separate remote control system or similar
equipment that switches the device on automatically, as
this could cause a fire hazard if the heater is covered or
positioned incorrectly.
• Do not use the device if it has been dropped or if it shows
visible signs of damage.
Intended use
Use the device for heating closed rooms or dry outdoor areas
whilst adhering to the technical data. Moreover, the device is
suited for drying, defrosting and aeration.
Intended use comprises e.g. heating the air in:
• sheds and stables
• greenhouses
• winter construction sites
• in wet rooms in compliance with the local or national
regulations for the operation of electrical equipment in wet
rooms.
Intended use comprises e.g. defrosting machines or pipelines.
Foreseeable misuse
• Do not place any objects, e.g. clothing, on the device.
• Do not use this device in the vicinity of fuel, solvents,
varnishes or other easily inflammable vapours or in rooms
where these substances are stored.
• Do not use the heating device in immediate vicinity of
swimming pools, bathtubs and showers.
• Do not use the device for heating in vehicles.
• Do not place the device on wet or flooded ground.
• The device may not be exposed to moisture or weather
effects (rain, sunlight).
• Any use other than the intended use is regarded as a
reasonably foreseeable misuse.
• Do not make any unauthorised modifications, alterations or
structural changes to the device.

4 EN
electric heater TEH 20 T / TEH 30 T
Personnel qualifications
People who use this device must:
• be aware of the dangers that occur when working with
electric devices in damp areas.
• have read and understood the instructions, especially the
Safety chapter.
Maintenance tasks which require the housing to be opened
must only be carried out by specialist electrical companies or by
Trotec.
Electrically skilled person
Electrically skilled personnel must be able to read and
understand electric circuit diagrams, to put electrical systems
into service and to maintain them, to wire control cabinets, to
ensure the functionality of electrical components and to identify
possible hazards from electrical and electronic systems.
Instructed person
Instructed persons have been informed of the tasks they were
entrusted with as well as of potential hazards resulting from
inappropriate behaviour. They are allowed to operate and
transport the device and perform simple maintenance activities
(cleaning the housing, cleaning the fan).
The device is to be maintained and looked after by instructed
personnel.
Residual risks
Warning of electrical voltage
Work on the electrical components must only be
carried out by an authorised specialist company!
Warning of electrical voltage
Before any work on the device, remove the mains plug
from the mains socket!
Do not touch the mains plug with wet or damp hands.
Hold onto the mains plug while pulling the power cable
out of the mains socket.
Warning of electrical voltage
Risk of electric shock!
Risk of an electric shock if the heating device comes
into contact with water in bathtubs, showers or
swimming pools!
Do not use this heating device in immediate proximity
to bathtubs, showers or swimming pools!
Warning of hot surface
Parts of this appliance can become very hot and cause
burns. Particular attention is to be paid when there are
children or vulnerable persons present!
Warning
Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!
Warning
The device is not a toy and does not belong in the
hands of children.
Warning
Risk of suffocation!
Do not leave the packaging lying around. Children may
use it as a dangerous toy.
Warning
Improper installation entails a risk of fire.
Do not place the device on combustible ground.
Do not place the device on high-pile carpets.
Warning
In order to avoid overheating and fire hazards, the
device must not be covered!
Behaviour in the event of an emergency
1. Switch the device off.
2. In an emergency, disconnect the device from the mains
feed-in: Hold onto the mains plug while pulling the power
cable out of the mains socket.
3. Do not reconnect a defective device to the mains.
Overheating protection
The device is provided with a safety thermostat which is
activated by overheating of the device (when exceeding the
operating temperature).
Investigate the cause of overheating.
If the safety thermostat does not switch in the event of
overheating, the overheating protection will be tripped. In that
case the device switches off completely. If so, please contact
the customer service to have the overheating protection
replaced.
Information about the device
Device description
The device serves to generate and to distribute warm air, for
speeding up drying processes and for defrosting frozen
materials. It can be used either in closed rooms or in dry
outdoor areas.
The heating element generates warmth. The air surrounding the
heating element is heated. The heated air is distributed in the
room by the fan. The integrated thermostat is equipped with a
3-stage temperature adjustment which allows to constantly
keep the respective temperature level. The device is further
equipped with an overheating protection.
The device is suitable for tough requirements and therefore
suited for the use on construction sites (heating and
construction drying), in greenhouses or other commercial areas,
e.g. for drying earthenware. Besides, the device is suited for
continuous operation.

EN 5
electric heater TEH 20 T / TEH 30 T
Device depiction
3
2
1
7
6
5
4
8
9
10
No. Designation
1 Air outlet
2 Housing
3 Transport handle
4 air inlet
5 Fan
6 Rotary switch temperature
7 Operating control lamp
8 On/off switch
9 Mains connection
10 Feet
Transport and storage
Note
If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.
Transport
To make the device easier to transport, it is fitted with a carry
handle.
Before transporting the device, observe the following:
• Switch the device off.
• Hold onto the mains plug while pulling the power cable out
of the mains socket.
• Do not use the power cable to drag the device.
• Allow the device to cool down sufficiently.
Storage
Before storing the device, proceed as follows:
• Hold onto the mains plug while pulling the power cable out
of the mains socket.
• Stackable: up to 3devices may be stacked on top of one
another.
• Allow the device to cool down sufficiently.
When the device is not being used, observe the following
storage conditions:
• Store the device in a dry location and protected from frost
and heat.
• Store the device in an upright position where it is protected
from dust and direct sunlight.
• If required, use a cover to protect the device from invasive
dust.
• Place no further devices or objects on top of the device to
prevent it from being damaged.

6 EN
electric heater TEH 20 T / TEH 30 T
Assembly and installation
Scope of delivery
• 1x device
• 1x manual
Start-up
Info
Odours might arise upon initial start-up or after a
longer period of non-use.
When positioning the device, observe the minimum distance
from walls or other objects as described in the chapter
Technical annex.
A
B
C
C
D
• Before restarting the device, check the condition of the
power cable. If there are doubts as to the sound condition,
contact the customer service.
• The device may only be used in environments with no
excessive formation of dust.
• Set the device up in an upright and stable position.
• Do not create tripping hazards when laying the power
cable or other electric cables, especially when positioning
the device in the middle of the room. Use cable bridges.
• Make sure that extension cables are completely unrolled.
• Make sure that no curtains or other objects interfere with
the air flow.
• Make sure that the device cannot come into contact with
moisture or water.
Connecting the power cable
• Insert the mains plug into a properly fused mains socket.
• Make sure that the power cable is guided along the back
of the device. Never guide the power cable along the front
of the device!
Operation
• Avoid open doors and windows.
• Stackable: up to 3devices may be stacked on top of one
another.
Control panel
8
7
6
No. Designation Meaning
6 Rotary switch
temperature
For setting the desired room
temperature
7 Operating control
lamp
Illuminated during the heating
process
8 On/off switch Switching the device on/off
Is illuminated when the device is
switched on
Switching the device on
Once you have completely installed the device as described in
the chapter Assembly and start-up, you can switch it on.
Info
The device will not be switched on until the room
temperature falls below the temperature set at the
room thermostat. This holds true for the cold setting as
well (ventilation only).
1. Set the on/off switch(8) to I to switch the device on.
ðThe on/off switch is illuminated in green and the fan
switches on.

EN 7
electric heater TEH 20 T / TEH 30 T
Setting the temperature
1. Select the desired temperature via the stepless rotary
switch temperature(6) of the room thermostat.
maximum
minimum
To find the ideal thermostat setting, please proceed as follows:
1. Set the rotary switch temperature(6) to the maximum
stage.
2. As soon as the desired temperature has been reached,
slowly turn the rotary switch temperature(6) back until the
device is switched off.
ðThe operating control lamp(7) goes out.
ðThe device now automatically maintains the desired
temperature level.
The room thermostat controls the room temperature
automatically:
• When exceeding the set value, both the heating and the
ventilation will be switched off.
• When falling below the set value, both the heating and the
ventilation will automatically be switched back on.
During the heating process, the operating control lamp(7) is
illuminated in red.
Info
The desired room temperature should be higher than
the current room temperature.
Switching the device off
Please proceed as follows to switch the device off:
1. Turn the rotary switch temperature(6) to the cold setting
where ventilation mode only is activated.
2. Keep the fan running until the device has cooled down.
ðNever pull the mains plug from the socket while the
fan is running. The device may overheat.
3. Set the on/off switch(8) to O to switch the device off.
ðThe on/off switch is no longer illuminated.
Shutdown
Warning of electrical voltage
Do not touch the mains plug with wet or damp hands.
1. Proceed as described in the Switch the device off chapter.
2. Hold onto the mains plug while pulling the power cable out
of the mains socket.
3. Clean the device according to the Maintenance chapter.
4. Store the device according to the Storage chapter.
Errors and faults
The device has been checked for proper functioning several
times during production. If malfunctions occur nonetheless,
check the device according to the following list.
The device does not start:
• Check the power connection.
• Check the power cable and mains plug for damage. If you
notice damages, do not try to take the device back into
operation.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
• Check the on-site fusing.
• The motor might be defective. Have a defective motor
replaced by a specialist electrical company.
• The room thermostat might be defective. Have a defective
room thermostat replaced by a specialist electrical
company.
• Wait for 10minutes before restarting the device. If the
device is not starting, have the electrics checked by a
specialist company or by Trotec.
The device is switched on, the fan is operating, the heating
is not:
• Check the room temperature. The room thermostat may
have switched off, because the desired room temperature
has been reached.
• Check whether the overheating protection has tripped (see
chapter Safety).
• The heating resistor might have blown. Have a defective
heating resistor replaced by a specialist electrical
company.
• The heating element may be defective. If the heating
element is defective, have it replaced by a specialist
electrical company.
• The room thermostat might be defective. Have a defective
room thermostat replaced by a specialist electrical
company.
The fan is not running:
• Check whether the device is switched on.
• Check the power connection.
• Check the power cable and mains plug for damages.
• The fan motor might be defective. Have a defective fan
motor replaced by a specialist electrical company.

8 EN
electric heater TEH 20 T / TEH 30 T
The device is loud or vibrates:
• Check whether the device is set up in a stable and upright
position.
• Check the fan for dirt or damages.
• Have the motor checked by an authorised specialist
company or by Trotec. There may be a bearing damage on
the motor.
• Check the fan blades for dirt and clean them if required
(see chapter Maintenance).
• If the fan blades are defective, have them replaced by a
specialist company or by Trotec.
The device still does not operate correctly after these
checks:
Please contact the customer service. If necessary, bring the
device to an authorised specialist electrical company or to
Trotec for repair.

EN 9
electric heater TEH 20 T / TEH 30 T
Maintenance Maintenance intervals
Maintenance and care interval before every
start-up
as needed at least every
2weeks
at least every
4weeks
at least every
6months
at least
annually
Check air inlets and outlets for dirt
and foreign objects and clean
ifnecessary
X
Check air inlet grid(s) for dirt and
foreign objects and clean
ifnecessary
X X
Clean the exterior X X
Visually check the inside of the
device for dirt
X X
Check for damage X
Check attachment screws X X
Test run X
Maintenance and care log
Device type: ............................................. Device number: ....................................
Maintenance and care interval 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Check air inlets and outlets for dirt
and foreign objects and clean
ifnecessary
Check air inlet grid(s) for dirt and
foreign objects and clean
ifnecessary
Clean the exterior
Visually check the inside of the
device for dirt
Check for damage
Check attachment screws
Test run
Comments
1. Date: ...................................
Signature: ................................
2. Date: ....................................
Signature: .................................
3. Date: ....................................
Signature: .................................
4. Date: ....................................
Signature: .................................
5. Date: ...................................
Signature: ................................
6. Date: ....................................
Signature: .................................
7. Date: ....................................
Signature: .................................
8. Date: ....................................
Signature: .................................
9. Date: ...................................
Signature: ................................
10. Date: ..................................
Signature: .................................
11. Date: ..................................
Signature: .................................
12. Date: ..................................
Signature: .................................
13. Date: .................................
Signature: ................................
14. Date: ..................................
Signature: .................................
15. Date: ..................................
Signature: .................................
16. Date: ..................................
Signature: .................................

10 EN
electric heater TEH 20 T / TEH 30 T
Activities required before starting maintenance
Warning of electrical voltage
Do not touch the mains plug with wet or damp hands.
• Switch the device off.
• Hold onto the mains plug while pulling the power cable out
of the mains socket.
• Allow the device to cool down completely.
Warning of electrical voltage
Tasks which require the device to be opened must
only be carried out by authorised specialist
companies or by Trotec.
Cleaning the housing
Warning of electrical voltage
Never immerse the device in water!
Clean the housing with a soft, damp and lint-free cloth. Make
sure that no moisture enters the housing. Protect electrical
components from moisture. Do not use any aggressive cleaning
agents such as cleaning sprays, solvents, alcohol-based or
abrasive cleaners to dampen the cloth.
Wipe the housing dry after cleaning.
Visual inspection of the inside of the device for dirt
1. Use a torch to illuminate the openings of the device.
2. Check the inside of the device for dirt.
3. If you see a thick layer of dust, have the inside of the
device cleaned by a specialist electrical company or by
Trotec.
Technical annex
Technical data
Parameter Value
Model TEH 20 T TEH 30 T
Heating capacity 2.5kW 3.3kW
Amount of air
nominal:
effective:
300m³/h
130m³/h
300m³/h
130m³/h
Temperature increase ΔT 57 °C 75 °C
Mains connection 220– 240V~
50Hz
220– 240V~
50Hz
Nominal current
consumption
11.4A 15A
Type of protection IP14 IP14
Sound pressure level
(distance of 1m)
62 dB(A) 63 dB(A)
Dimensions (lengthx
widthx height)
325 x 260x
332mm
325 x 260x
332mm
Minimum distance to walls
and other objects
top (A):
rear (B):
sides (C):
front (D):
50 cm
50 cm
50 cm
50 cm
50 cm
50 cm
50 cm
50 cm
Weight 10.5kg 10.5kg

EN 11
electric heater TEH 20 T / TEH 30 T
Circuit diagram TEH20T / TEH30T

12 EN
electric heater TEH 20 T / TEH 30 T
Overview TEH20T / TEH30T Info
The position numbers of the spare parts differ from
those describing the positions of the components
mentioned in these instructions.
List of spare parts TEH20T / TEH30T
No. Spare part No. Spare part
A1 Baseplate B3 Room thermostat knob
A2 Air flow duct B4 Rubber feet
A3 Yellow (RAL1021) painted side panel C1 3.3kW Heating element (TEH30T)
2.5kW Heating element (TEH20T)
A4 Black painted hood (Ø150mm Hose connection)
A5 Black painted command baseplate + Control panel C2 Motor fan
A6 Room thermostat support C3 60°C Bimetallic thermostat - 20A
A7 Air outlet protection shield C4 Terminal block
A8 Ø230 Aluminium fan blade C5 Supply cable with Schuko plug
A9 Motor fan brackets C6 I/0 Switch (Green Fluor)
A10 Bulb thermostat protection C7 Heating element lamp (Red)
B1 ABS Grip + Back cover C8 TY95 Room thermostat
B2 Cable gland PG16

EN 13
electric heater TEH 20 T / TEH 30 T
Disposal
Always dispose of packing materials in an environmentally
friendly manner and in accordance with the applicable local
disposal regulations.
The icon with the crossed-out waste bin on waste
electrical or electronic equipment stipulates that this equipment
must not be disposed of with the household waste at the end of
its life. You will find collection points for free return of waste
electrical and electronic equipment in your vicinity. The
addresses can be obtained from your municipality or local
administration. You can also find out about other return options
that apply for many EU countries on the website
https://hub.trotec.com/?id=45090. Otherwise, please contact an
official recycling centre for electronic and electrical equipment
authorised for your country.
The separate collection of waste electrical and electronic
equipment aims to enable the re-use, recycling and other forms
of recovery of waste equipment as well as to prevent negative
effects for the environment and human health caused by the
disposal of hazardous substances potentially contained in the
equipment.
Only for United Kingdom
According to Waste Electrical and Electronic Equipment
Regulations 2013 (2013/3113) devices that are no longer usable
must be collected separately and disposed of in an
environmentally friendly manner.
Declaration of conformity
Declaration of conformity in accordance with the ECMachinery
Directive 2006/42/EC, AnnexII, Part1, SectionA
We– Trotec GmbH– declare in sole responsibility that the
product designated below was developed, constructed and
produced in compliance with the requirements of the
ECMachinery Directive in the version 2006/42/EC.
Product model/ Product: TEH 20 T
TEH 30 T
Product type: electric heater
Year of manufacture as of: 2022
Relevant EUdirectives:
• 2011/65/EU: 01/07/2011
• 2012/19/EU: 24/07/2012
• 2014/30/EU: 29/03/2014
• 2015/863/EU: 31/03/2015
Applied harmonised standards:
• EN 55014-1:2017/A11:2020
• EN 60335-1:2012/A1:2019
• EN 60335-1:2012/A2:2019
• EN 60335-1:2012/A14:2019
• EN 60335-1:2012/A13:2017
• EN 60335-2-30:2009/AC:2014
• EN 60335-2-30:2009/A11:2012
• EN 60335-2-30:2009/A1:2020
• EN 60335-2-30:2009/A12:2020
Applied national standards and technical specifications:
• EN 55014-2:2015
• EN 61000-3-3:2013/A1:2019
• IEC 61000-3-2:2019
Manufacturer and name of the authorised representative of
the technical documentation:
Trotec GmbH
Grebbener Straße 7, D-52525 Heinsberg
Phone: [phone]
E-mail: [email protected]
Place and date of issue:
Heinsberg, 15.06.2022
Detlef von der Lieck, Managing Director

Trotec GmbH
Grebbener Str. 7
D-52525 Heinsberg
[phone]
[phone]
[email protected]
www.trotec.com