Clarke Devil IRD20B Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC0518 iSS.3
INFRARED DIESEL HEATER
MODEL NO: DEVIL IRD20B
PART NO: 6925500

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INTRODUCTION
Thank you for choosing this Clarke Infrared Heater which is ideal for the
heating of work areas in large, well ventilated rooms or outbuildings. It is not
intended to be used to reach and maintain a certain level of human thermal
comfort within an enclosed space in which the product is situated.
Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you, and you can look forward to your heater giving
you long and satisfactory service.
Keep these instructions in a safe place for future reference.
GUARANTEE
This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission. This guarantee does not effect your
statutory rights.
ENVIRONMENTAL RECYCLING POLICY
Through purchase of this product, the customer is taking on the
obligation to deal with the WEEE in accordance with the WEEE
regulations in relation to the treatment, recycling & recovery and
environmentally sound disposal of the WEEE.
In effect, this means that this product must not be disposed of with general
household waste. It must be disposed of according to the laws governing
Waste Electrical and Electronic Equipment (WEEE) at a recognised disposal
facility.
If disposing of this product or any damaged components, do not dispose of
with general waste. This product contains valuable raw materials. Metal
products should be taken to your local civic amenity site for recycling of metal
products.

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TECHNICAL SPECIFICATION
SAFETY SYMBOLS
The following symbols appear on the unit.
Dimensions (L x W x H) 580 x 340 x 625 mm
Weight (empty) 18.5 kg
Fuel Diesel/paraffin
Fuel consumption 1.9 L per hour
Fuel Tank capacity 10.5 litres
Ignition type Direct spark
Air displacement 400 m3/hr
Continuous working time 6 hr (before re-fueling)
Over heating protection 120oC
Max output 20 kW (68242 Btu/h)
Selectable operating temperature +5oC to +45oC
Duty cycle S1 (continuous)
Fuel pump pressure 15 bar
Electrical supply 230V 50 Hz 1 ph
Protection degree IPX4
Sound pressure level 65 dB LpA
Hot Surface, do not
touch
Read these
instructions before use
Do not cover

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GENERAL SAFETY PRECAUTIONS
GENERAL
1. Always read and ensure you fully understand the following precautions and
the hazards associated with this heater. Do not allow anyone who has not
read these instructions to operate it.
2. Always check for damage before using the heater. Any damage should be
properly repaired. If in doubt, do not use the heater and consult your local
Clarke dealer.
3. Never carry out any modifications to this heater. If experiencing difficulty of
any kind consult your local Clarke dealer.
4. Use the heater in accordance with any applicable fire regulations.
OPERATING ENVIRONMENT
1. This heater is intended for drying & warming of commercial/industrial
buildings where adequate ventilation is provided. It is not for domestic use
or for heating habitable areas.
2. Do not expose the heater or power cable to rain or wet conditions. Any
water entering the heater will increase the risk of electric shock.
3. Never use the heater where petrol, paint thinners or other highly flammable
vapour or where high levels of airborne dust may be present.
4. Never locate the heater facing combustible materials.
5. Do not locate the heater close to an adjacent wall or ceiling. Avoid
placing the heater directly below power socket outlets.
6. Always locate the heater on a level, flat, fireproof floor. Ensure that the
heater is correctly and safely positioned as described on page11.
7. Disconnect the heater from the power supply when not in use.
8. Never place anything on top of the heater.
9. Always keep combustibles at least 2.5 m from the front of the heater.
10. Operate only on a stable, level surface.
11. Use only in accordance with local building regulations.
CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY.
CAUTION: DUE TO THE HIGH SURFACE AND EXHAUST TEMPERATURES,
ADULTS AND CHILDREN MUST KEEP CLEAR OF THE UNIT TO AVOID BURNS
OR CLOTHING IGNITION.

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VENTILATION
Even though this heater operates very close to 100 percent combustion
efficiency, it still produces small amounts of carbon monoxide.
Carbon monoxide (CO) is toxic.
CO can build up in a confined spaces and failure to provide adequate
ventilation can be fatal.
The early symptoms of asphyxiation caused by inadequate ventilation are:
1. Only use in well ventilated areas and make sure that ample ventilation is
present if the heater is being started following a long period without use.
2. Never attach any duct work to the front of the heater.
3. Never cover or impede airflow into or out of the heater.
PERSONAL SAFETY
1. When the heater is used in the presence of other people the user is
responsible for informing those present of the safety precautions and of the
hazards involved.
2. The heater is not to be used by children or people with reduced physical,
sensory or mental capabilities, or lack of knowledge.
3. Always ensure that people and animals are at least 2.5 m away from the
front of the heater when in operation.
4. Never leave a heater unsupervised while in use - someone should always
be made responsible for monitoring it.
5. Do not move or service the heater while hot or in use.
6. This heater will be hot when in use and should not be touched until it has
fully cooled down after shutting down.
REFUELLING
1. Always refuel in a well ventilated area.
2. Always allow the heater to cool down before re-fuelling.
3. Always refuel away from any source of heat.
4. Never overfill the tank, only fill to the level specified.
5. Use only clean diesel or paraffin. NEVER use gasoline, paint thinners,
alcohol or other highly flammable fuels.
• headache • nausea
• dizziness • dry mouth or sore throat

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6. Take care not to spill diesel or paraffin onto the power cable as this could
damage the insulation.
7. Never move, replenish the fuel supply or handle the heater when it is hot, or
in use. Turn it off and wait for it to cool down first.
ELECTRICAL SAFETY
1. Electrical appliances must match the power outlet. Never modify the plug
in any way. Do not use adaptor plugs with earthed (grounded) appliances.
Correct plugs and outlets will reduce the risk of electric shock.
2. Do not abuse the electrical cable. Never use the cable for pulling or
unplugging the heater. Keep the cable away from sources of heat, oil,
sharp edges or moving parts. Damaged or tangled cables increase the risk
of electric shock.
3. Keep the mains cable well away from machines and ensure an adequate
electrical supply is close at hand so that the operation is not restricted by
the length of the cable.
4. Always disconnect from the mains supply before moving the heater or
performing any maintenance tasks.
5. Inspect the mains cable regularly for signs of damage. DO NOT use if it is
damaged and always keep it away from the source of heat.
6. 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.
SERVICE & REPAIRS
1. Check the heater for damage before use. DO NOT use if the heater is
damaged. Any damage should be properly repaired or the part replaced.
If in doubt, DO NOT use the heater. Consult your local dealer.
2. When necessary, have your heater serviced or repaired by a qualified
person using identical replacement parts. This will ensure that the safety of
the heater is maintained.

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ELECTRICAL CONNECTIONS
Before switching the product on, make sure that the voltage of your electricity supply is
the same as that indicated on the rating plate. This product is designed to operate on
230VAC 50Hz. Connecting it to any other power source may cause damage.
This product may be fitted with a non-rewireable plug. If it is necessary to change the
fuse in the plug, the fuse cover must be refitted. If the fuse cover becomes lost or
damaged, the plug must not be used until a suitable replacement is obtained.
If the plug has to be changed because it is not suitable for your socket, or due to
damage, it should be cut off and a replacement fitted, following the wiring instructions
shown below. The old plug must be disposed of safely, as insertion into a mains socket
could cause an electrical hazard.
If the colours of the wires in the power cable of this product do not correspond with the
markings on the terminals of your plug, proceed as follows.
• The wire which is coloured Blue must be connected to the terminal which is
marked Nor coloured Black.
• The wire which is coloured Brown must be connected to the terminal which
is marked Lor coloured Red.
• The wire which is coloured Yellow and Green must be connected to the
terminal which is marked E or or coloured Green.
.
We strongly recommend that this machine is connected to the mains supply
via a Residual Current Device (RCD). If in any doubt, consult a qualified
electrician. DO NOT attempt any repairs yourself.
WARNING: READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE MAINS
SUPPLY.
WARNING: THE WIRES IN THE POWER CABLE OF THIS PRODUCT ARE
COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN = EARTH
Plug must be BS1363/A approved.
Always fit a 13 Amp fuse.
Ensure that the outer sheath of the cable is firmly held by the clamp
Neutral
(Blue)
Live
(Brown)
Earth
(Green and Yellow)

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DEVIL IRD20B HEATER OVERVIEW
The heater is supplied with a spare fuel filter, tank drain bolt and sealing
washer. Fixings are supplied to connect the stand, heatshield and handle
which are supplied loose.
SAFETY SYSTEMS
The unit is fitted with a temperature limit sensor, which is designed to turn the
heater off if the temperature should rise to an unsafe level. If the sensor is
tripped and the heater is turned off it may require a service. Once the
temperature falls back below the reset temperature, the heater should re-
start.
1 Power-on LED 5 Fuel gauge
2 Digital temperature display 6 Fuel tank
3 Power switch 7 Fuel filler cap
4 Temperature control knob

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The heater is fitted with an electrical circuit breaker to protect the internal
components from damage. If the heater should fail to work, this fuse may
require checking by your dealer.
The heater is fitted with a tilt switch designed to turn the unit off immediately if
it should tip over beyond a pre-determined angle.
PREPARATION
UNPACKING
1. Remove heater from carton. and remove all protective material used for
shipment.
2. Check the heater for any damage and notify your Clarke dealer
immediately should any be apparent.
NOTE: THERE MAY BE SOME DISCOLOURATION TO THE HEATING ELEMENT,
THIS IS DUE TO THE HEATER BEING TESTED DURING THE
MANUFACTURING PROCESS. THIS DOES NOT INDICATE A FAULT.
3. Fit the carrying handle to the top
of the heater using the screws
supplied.
4. Fit the heatshield to the heater
body using the screws supplied.

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5. Fit the stand to the fuel tank using
the fixings supplied. Note the
correct orientation.
SUITABLE FUELS
Diesel or paraffin are the only fuels
that should be used in this heater.
FILLING THE FUEL TANK
IMPORTANT: In cold weather,
condensation may develop in the tank if the tank is empty. Before filling the
fuel tank for the first time or after extended storage periods, vent the fuel
tank of any moisture or condensation.
1. Follow all of the “Safety Precautions”.
2. Remove the fuel cap.
NOTE: If you lose the fuel cap a
replacement must be
obtained before use, this is
available from the Clarke
service department.
3. Fill the fuel tank with clean diesel
or paraffin.
4. When refilling, inspect the mesh
filter inside the filler neck for any
trapped contamination and clean out if necessary.
• When filling the heater, make sure that the heater is level and do not
overfill. Use a funnel or can with a long filling spout.
• Fill with a minimum of 4 litres of fuel.
POSITIONING THE HEATER
The heater should not be used in habitable areas. It must be located on a
hard, level surface to minimise the risk of accidentally tipping over. The heater
is not suitable for use on wood floors or other combustible materials. It should
be stood on suitable insulating material at least 26 mm thick and extending
1m or more in all directions.
When the heater is in use, periodically monitor any buildup of heat on nearby
surfaces.
It is important that the heater is positioned with at least 2.5 m clearance at the
front between the heater and any objects or surfaces. Always position the
heater facing the centre of the room, not pointing directly at any nearby
surfaces. Never place any objects on, or against the heater.

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Any equipment or workshop furniture should be a safe distance away as they
could be adversely affected by heat.
VENTILATION
The heater must only be installed in a room which is well ventilated. Ventilation
is essential to reduce the dangers of carbon monoxide poisoning.
OPERATION
HEATER START UP
1. Plug the heater into the mains
power supply.
2. Set the power switch to the ON
position.
• The ‘power-on’ LED will
illuminate and the digital
temperature display will show
the room temperature for up to
3 minutes.
• Turn the temperature control
knob to adjust the target temperature required. This setting will be
shown by the digital display.
NOTE: If the heater does not start up, the temperature control may be set too
low. Turn the control knob to a higher setting until the heater starts. If
the heater does not start, switch the power switch off, then switch back
on again. If the heater still does not start, refer to fault-finding guide on
page 13. Also check that the power supply is correct.

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FAULT CODE DISPLAY
The digital display can show the following fault codes.
HEATER SHUT DOWN & RE-STARTING
1. Set the power switch to the OFF position but do not unplug from the mains.
NOTE: When the heater is shut down, the fan will continue running for 5
minutes to expel hot air and cool the casing. For this reason the
heater should not be unplugged.
2. Only for extended shutdown should the heater be unplugged from the
mains supply.
3. If re-starting, wait 10 seconds after shutting off the heater before re-starting.
4. Set the power switch to the ON position and follow the startup procedure
above.
FAULT CODE CAUSE SOLUTION
FO:- Operation error 1. Heater is switched on
before being plugged
in.
1. Disconnect from power
supply, switch off and
then plug in again
before switching on.
F1:- Photocell error 1. No fuel
2. Fuel is contaminated
3. Photocell is dirty or
damaged.
4. Fuel Filter is dirty.
5. Ignition error
1. Switch off and refill the
tank.
2. Switch off, empty and
refill the fuel tank. Clean
the filter with clean fuel.
3.Contact your dealer.
4. Clean filter.
5. Contact your dealer.
F2:- Temperature
control sensor error
1. Damaged cable
2. Sensor is damaged.
1. Contact your dealer.
2. Contact your dealer.
F3:-Thermostat error 1. Internal parts over
heating.
2. Anti-tilting sensor
activated.
1. Turn the heater off and
wait until it has cooled
down.
2. Reposition heater on a
level surface.
LO 1. External temperature
below -9oC
1. Wait for normal
temperature conditions
CH 1. Air temperature over
55oC.
1. Wait for normal
temperature conditions

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FAULT FINDING
Problem Cause Solution
Heater fires but shuts off
after a short period of
time.
1. Dirty fuel filter
2. Nozzle is dirty
3. Photocell lens is dirty
4. Photocell not installed
properly.
5. Photocell defective
6. Bad connection
between PCB and
photocell
1. Clean/replace fuel filter
2. Clean/replace nozzle
3. Clean photocell
4. Adjust photocell position
5. Return to dealer for new
photocell
6. Ask dealer to check
wiring connections
Heater will not operate 1. No fuel in tank
2. Corroded spark plug or
incorrect plug gap
3. Dirty fuel filter
4. Dirty nozzle
5. Moisture in fuel/tank
6. Bad electrical
connection between
transformer and PCB
7. Igniter wire not
connected to sparkplug
8. Defective igniter
1. Fill tank with fresh fuel.
2. Ask dealer to clean/re-
gap/replace spark plug
3. Clean/replace fuel filter
4. Ask dealer to clean/
replace nozzle.
5. Rinse out fuel tank with
clean, fresh fuel.
6. Return to dealer.
7. Return to dealer for repair.
8. Return to dealer for repair.
Fan does not operate
when heater is switched
on.
1. Thermostat is set too low
2. Broken electrical
connection between
main PCB and motor.
1. Turn the thermostat to a
higher setting
2. Ask dealer to check all
electrical connections.
Poor combustion and/or
excessive soot produc-
tion.
1. Dirty fuel filter
2. Poor quality fuel.
1. Clean/replace fuel filter
2. Check that fuel is not
contaminated or old.
Heater does not turn on
and the lamp does not
light.
1. Temperature limit sensor
has overheated.
2. No electrical power
3. Fuse blown
4. Bad connection
between temperature
limit sensor and PCB.
1. Set the power switch to
off and allow the heater
to cool for 10mins before
switching back on.
2. Check the power cable
for good connection.
Test the power supply.
3. Return to dealer for repair.
4. Return to dealer for repair.

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CLEANING AND MAINTENANCE
Correct maintenance is vital for smooth operation of the burner in order to
avoid wasting fuel and causing atmospheric pollution.
This heater should be inspected, cleaned and serviced annually by a qualified
service engineer. Unauthorised persons should not attempt to carry out repairs
of the burner components. In the event of damage or broken components,
replacements are available from Clarke Parts & Service Department.
CLEANING
1. Use a damp cloth wrung out in a solution of soapy water to clean the
exterior of the heater. Use mild household cleaners on difficult spots.
2. Never use abrasive cleaners as they may damage the paint finish.
3. If you suspect the fuel has become contaminated with dirt or water, empty
the tank and refill with fresh fuel.
4. The fuel filter should be removed
and inspected for cleanliness
before refilling the tank. If foul,
remove and clean if necessary by
rinsing in clean fuel.
5. The internal heating surfaces and
combustion chamber of the
burner should be cleaned at least
annually during servicing. This task
should be left to the Clarke
Service Department.
NOTE: Do not attempt to service the heater yourself. Servicing and
maintenance should be left to the Clarke Service Department.
STORAGE
1. For long term storage, always store the heater in a dry, well ventilated
space. Stand in a level position when filled, or fuel leakage may occur. It is
recommended to completely fill the tank with fuel for extended storage to
minimize condensation inside the tank.
WARNING: BEFORE CARRYING OUT ANY MAINTENANCE, ENSURE THE
HEATER IS SWITCHED OFF, DISCONNECTED FROM THE MAINS SUPPLY AND
HAS BEEN GIVEN ADEQUATE TIME TO COOL DOWN.

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DECLARATION OF CONFORMITY