Clarke Little Devil (inc ss) Installation and operation manual

OPERATING & MAINTENANCE
INSTRUCTIONS GC0711
GAS HEATERS
Models: Little Devil (inc ss), Devil 650/660(ss), Devil
850/860(ss), Devil 1250/1260(ss), Devil 1850, Devil 3000
& Devil 3150

2
CONTENTS
Guarantee .............................................................................................. 2
Introduction ............................................................................................ 3
Technical Specifications ....................................................................... 3
General Safety Precautions .................................................................. 4
Electrical connections .......................................................................... 5
Unpacking .............................................................................................. 6
Propane Gas Supply.............................................................................. 6
Gas Connection..................................................................................... 6
Changing Gas Bottles ........................................................................... 7
Fresh Air Requirements .......................................................................... 7
Operation ............................................................................................... 8
Starting Procedure ................................................................................. 9
Stopping Procedure ........................................................................... 10
Maintenance ........................................................................................ 10
Troubleshooting .................................................................................... 11
Wiring Diagrams ................................................................................... 12
Parts Lists and Diagrams ..................................................................... 14
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt 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.

3
TECHNICAL SPECIFICATIONS
Little Devil Devil Devil Devil Devil Devil
Devil/ss 650/660 850/860 1250/60 1850 3000 3150
Part No 6920160 6920162 6920170 6920340 6920360 6920400 6920350
(painted body)
6934200 6934205 6934210 6934215
(stainless steel body)
Min. Output 35,000 52,000 43,000 91,000 119,000 171,000 200,000
(Btu/hr)
Max. Output 35,000 52,000 107,000 149,000 200,000 281,000 344,000
(Btu/hr)
Gas Pressure 0.3/5 0.7/10 1.5/22 2/29 2/29 2/29 2/29
Max (bar/psi)
Air Flow 300 300 750 850 1,800 2450 3300
(m3/hr)
Gas Consum- 0.8 1.17 2.46 3.43 4.61 6.48 7.99
ption (kg/hr)
Nozzle Size 0.7 1.00 1.1 1.25 1.5 1.85 2.0
(mm)
Motor Voltage 230V 230V 110/230V 110/230V 110/230V 110/230V 110/230V
(Volts)
Power rating 35 35 90 90 110 130 300
(Watts)
Input Current 0.3 0.3 0.7 0.7 0.5 0.65 1.3
230V (Amps)
110V (Amps) 1.3 1.3 1.0 1.3 2.6
Fuse Rating 13 13 13 13 13 13 13
(Amps)
Dimensions 350 x 490 x 550 x 635 x 725 x 925 x 1075 x
(mm) 180 x 270 180 x 270 270 x 320 270 x 380 460 x 535 370 x 520 420 x 565
Weight (kg)5.0 5.5 11.5 13 23.0 29.5 30.0
Please note that the details and specifications contained herein, are correct at the
time of going to print. However, CLARKE International reserve the right to change
specifications at any time without prior notice.
INTRODUCTION
Thank you for purchasing this CLARKE Gas Powered Heater.
Please read this manual thoroughly and follow the instructions carefully
before attempting to use the heater. In doing so you will ensure the safety of
yourself and that of others around you and you can look forward to it giving
you long and reliable service.

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WARNING!
Lack of ventilation can cause Carbon Monoxide poisoning.
Carbon Monoxide poisoning can kill.
Signs of Carbon Monoxide poisoning are headaches, dizziness and/or nausea. Should
anyone show these signs, they must GET FRESH AIR IMMEDIATELY. Turn off the heater and
have it serviced before using again.
Pregnant women, persons with a heart or lung condition, anaemia or under the influence
of alcohol, or those at high altitude, are more likely to be effected by Carbon Monoxide.
Read, and make sure you fully understand the following precautions and the hazards
associated with this type of equipment.
•Use ONLY Propane gas with this heater.
•Ensure the Propane gas bottle, gas hose and electric cable, are positioned behind
the unit, well away from the heat.
•Ensure gas hose and regulator connections are GAS TIGHT and the hose is not kinked.
•NEVER use the heater where petrol, paint thinner, or other highly flammable vapour
or if a high dust content is present.
•ONLY use with the voltage specified and ensure the heater is properly earthed.
•Use ONLY in well ventilated areas. Provide ventilation of at least 100 square inches of
fresh air for every 100,000 BTU/hr of rating.
•The minimum clearance from any combustible materials is 8 feet (250cm) from the
hot air outlet. Never obstruct the air intake and allow at least 4 feet (125cm) between
the rear, top and sides of the heater and any walls or other obstruction.
•Stand the heater on a stable, level surface whilst hot or operating. If the heater
should overturn, a fire could occur.
•Keep children and animals away from heater at all times.
•Use heater in accordance with all fire regulations.
•NEVER use heater for domestic heating in living or sleeping areas.
•NEVER leave a heater plugged in without adult supervision if children or animals are
likely to be present.
•NEVER move, handle, replenish gas supply or service the heater when it is hot,
operating or plugged in.
•NEVER attach the heater to any duct work, or impede air flow into or out of the heater.
•Disconnect the heater from the power supply when not in use.
•Use ONLY the regulator supplied with the machine.
•DO NOT exceed the limit of 240Btu/hr, per square metre of room area.
•If the machine works for long periods at maximum capacity, be aware that it is possible
for ice to form on the cylinder due to excessive evaporation.
•NEVER direct hot air towards the cylinder in order to de-ice.
•NEVER use in wet areas, basements or below ground level.
•Always ensure the heater is correctly maintained in accordance with this manual.
GENERAL SAFETY PRECAUTIONS

5
ELECTRICAL CONNECTIONS
Connect the mains lead to a standard, 230 Volt (50Hz) electrical supply through
an approved 13 amp BS 1363 plug or a suitably fused isolator switch.
With the exception of the Little Devil and Devil 650/660, the heater may also be
connected to a 110V supply through a suitably approved plug.
The conversion to 110V, is by means of a switch,
mounted on the rear panel of the unit, which is
held in place by a lock plate. To change the
voltage, remove the two self tapping screws
securing the plate and remove the plate. Move
the switch to the appropriate position and
replace the plate having turned it through 180O
as shown opposite.
WARNING! THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in the mains lead are coloured in accordance with the
following code:
Green & Yellow - Earth
Blue - Neutral
Brown - Live
As the colours of the flexible cable of this appliance may not correspond with
the coloured markings identifying terminals in your plug proceed as follows:
• Connect GREEN & YELLOW cord to terminal marked with a letter “E” or Earth
symbol ‘ ’ or coloured GREEN or GREEN & YELLOW.
• Connect BROWN cord to terminal marked with a letter “L” or coloured RED
• Connect BLUE cord to terminal marked with a letter “N” or coloured BLACK
If this appliance is fitted with a plug which is moulded onto the electric cable
(i.e. non-rewirable) please note:
1. The plug must be thrown away if it is cut from the electric cable. There is a
danger of electric shock if it is subsequently inserted into a socket outlet.
2. Never use the plug without the fuse cover fitted.
3. Should you wish to replace a detachable fuse carrier, ensure that the correct
replacement is used (as indicated by marking or colour code).
4. Replacement fuse covers can be obtained from your local dealer or most
electrical stockists.
5. The fuse in the plug must be replaced with one of the same rating (13 amps)
and this replacement must be ASTA approved to BS1362.
We strongly recommend that this machine is connected to the mains supply through a
Residual Current Device (RCD).
If in doubt, consult a qualified electrician. Do not attempt any electrical repairs yourself.
FIG 1

6
UNPACKING
When unpacking, check the heater for possible shipping damage. Should
any damage be apparent, please notify your Clarke dealer immediately.
Your heater is fully assembled,- only the electrical and gas supplies need
connecting.
PROPANE GAS SUPPLY
These heaters are designed for use with PROPANE GAS ONLY. Gas bottles are
not supplied, but are readily available from builders merchants or gas
suppliers etc.
This range of portable, direct fired gas heaters is designed to BS 4096 for
industrial applications to give safe, efficient and reliable operation, and are
for use with Propane Gas only. Propane gas bottles are not supplied with the
unit, but are readily available from builders merchants or gas suppliers.
As with all mechanical equipment, optimum performance will only be
achieved if the correct application and servicing procedures are followed.
GAS CONNECTION
Connect the free end of the gas hose to the gas inlet connection on the
heater and tighten to ensure there are no gas leaks. Before attaching the
regulator to the gas cylinder, ensure the mating parts are free from grease
and dirt and are undamaged.
Fit the regulator to the cylinder,
tightening the thread as tight as
possible with a propane spanner,
noting that the threads are LEFT
HANDED. To check for leaks, use
soapy water or liquid soap.
IMPORTANT: The gas hose and
cylinder must ALWAYS be located
behind the heater.
In order to reduce the risk of icing up when operating at long periods at
maximum capacity, you should use a larger capacity gas bottle, or two/three
bottles in parallel, as shown in Fig 2.
The‘Tee’ piece and‘pigtails’are readily available from your builders
merchants or gas supplier.
WARNING
Propane Gas cylinders must be used and stored in accordance with the
‘Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972’
FIG 2

7
CHANGING GAS BOTTLES
1. Turn off the heater and disconnect from the electrical supply.
2. Close the gas valve on the bottle and unscrew the regulator, (left hand
thread).
3. Ensure the replacement bottle screw threads and gas orifice is perfectly
clean before screwing in the regulator valve tightly.
4. Check to ensure there are no leaks using soapy water and when satisfied,
plug in to the electrical supply and restart the heater.
MINIMUM FRESH AIR OPENING REQUIREMENTS
Heater Model Output Minimum Minimum
Btu/hr Ventilation in2Ventilation cm2
Little Devil 35,000 35 226
Devil 650/660 52,000 52 335
Devil 850/860 107,000 107 690
Devil 1250/1260 149,000 149 961
Devil 1850 200,000 200 1290
Devil 3000 281,000 281 1812
Devil 3150 344,000 344 2219
e.g. For the Devil 1250 at max. output, a 3ft window must be open by 3.5"
minimum.
As a general rule of thumb, an opening of 1in2per 1000 Btu/hr is a minimum
requirement.

8
OPERATION
Understanding the basic operation of the heater will reinforce the need to
maintain the unit in top condition at all times, whilst always observing the
safety precautions.
The heater comprises four basic systems:
1. The gas system.
2. The air system.
3. The ignition system.
4. The safety control system.
AIR SYSTEM
An axial fan, which is energised when switching ON, provides the main air
flow.
GAS SYSTEM
The gas supply to the machine is by means of a high pressure hose,
connected to an LPG cylinder, via a pressure regulator.
When the mains supply is switched on, the Safety Shut-off Valve solenoid is
energised, allowing the gas to flow to the Flame Failure Valve, and when the
Failure Valve Override knob is depressed, gas flows to the Burner Head.
IGNITION SYSTEM
A Piezo-electric Igniter is positioned at the burner head. When the Igniter
button is depressed, a high intensity spark is generated, which ignites the gas.
Heat from the flame is sensed by a thermocouple, which is connected to the
Flame Failure Valve. As the thermocouple heats up, a low voltage is fed to
the Flame Failure Valve, causing the valve to open, so that after 5-10
seconds, the Override knob may be released and the main flame is
established.The Safety Control System.
Should the flame extinguish for any reason, the thermocouple will quickly
cool, causing the Flame Failure valve to close, shutting off the gas supply.
Similarly, should there be a power failure, causing the fan motor to stop, the
Safety Shut-Off valve solenoid will become de-energised, and therefore shut
off the gas supply.
Additionally, the machine is equipped with Thermal Overload Protection,
which will intervene should the unit overheat, shutting off the electrical
supply.

9
STARTING PROCEDURE!
WARNING
Before starting the heater, you MUST ensure that the minimum ventilation
requirements are observed to avoid the risk of carbon monoxide poisoning.
1. Ensuring there is sufficient gas, and that it is correctly connected, open the
valve on the gas cylinder, and open the regulator valve which is adjacent
to the gas inlet pipe. (Not applicable on the Little Devil).
2. Plug the heater in to a suitably earthed supply and observing all precautions
previously stated, push the fan switch to the ON (I) position, (A, Fig.3), and
ensure the fan operates.
3. Fully depress the gas valve button (B, Fig. 3), which is adjacent to the gas
inlet pipe, and push the ignition button (C, Fig. 3), repeatedly until the burner
ignites. Keep the gas valve button (D, Fig. 3), depressed for a further 10
seconds approx, until the main flame is established.
Should the flame extinguish when the gas valve button is released, wait for
1 minute, before repeating the operation, this time, holding down the gas
valve button for a longer period.
NOTES:
The Little Devil and Devil 650/660 heaters have a fixed, regulated gas flow,
whereas all other models have a variable gas flow regulator, so that you can
regulate the heat output by adjusting the regulator pressure.
Turning the knob clockwise will increase the pressure, and therefore the output,
anticlockwise to decrease.
If ignition is difficult or irregular, ensure the fan is operating and that the air inlet
and outlet are completely clear. Also ensure that the electrode gap is correct,
and that the electrode is clean (see Maintenance).
IMPORTANT:
Should the thermal overload protection feature operate, shut off the gas
supply and allow the unit to cool for at least 10 minutes with the fan running,
before attempting to relight the burner.
Should the other safety features (previously mentioned) operate, the heater
may be restarted once the cause of the problem has been found and rectified.
FIG 3

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STOPPING PROCEDURE
1. Turn OFF the gas at the cylinder valve.
2. Disconnect the gas supply.
3. Allow the fan to run for 2 - 3 minutes with the burner off, in order to allow
the casing to cool down.
4. Switch OFF the fan and disconnect the electrical supply.
MAINTENANCE
It is essential that the heater is correctly maintained and kept in top condition
at all times.
IMPORTANT Before carrying out any adjustment or maintenance, ensure the
heater is switched OFF, disconnected from the mains and gas supply, and
has been given adequate time to cool down.
All models are similar, in that access to the working parts, is gained by
removing the rear panel, which is secured by 4 screws, (3 in the case of the
Little Devil), around its edge. Once removed, the panel, complete with all
components, may be lifted clear.
MONTHLY (WHEN IN CONSTANT USE)
Ensure the electrode is clean and the gap is no more than 5mm.
Check the condition of the gas hose. If there are any signs of deterioration, it
should be renewed using only a CLARKE original spare part.
Ensure that all connections are clean and secure.
When necessary, clean the fan and the inside of the heater thoroughly.
IMPORTANT: The use of parts other than genuine CLARKE replacement parts
may result in safety hazards, decreased performance, and will invalidate
your warranty.
ENVIRONMENTAL PROTECTION
These products contain valuable raw materials. Do not dispose of this
product with general household waste. All tools, accessories and
packaging should be sorted and disposed off appropriately by taking
to a recycling centre.

11
1. Check power supply, power
cable and fuse, and replace if
necessary.
2. Check and if necessary,
replace.
3. Detect cause of overheating.
Wait for 5 mins and restart. If
condition persists, contact
your Clarke dealer for advice.
1. No power
Motor does not start.
Piezo does not spark.
No gas flow to the
burner.
Burner starts but stops
as the gas valve is
released.
1. Electrode in wrong
position.
2. Faulty connection
between Piezo and
electrode.
1. Check position and reset if
necessary.
2. Check and connect properly.
1.Cylinder gas tap closed.
2. Cylinder is empty.
3. The nozzle is obstructed.
1. Open the gas tap.
2. Replace cylinder.
3. Remove the nozzle & clean it.
4. Use soapy water to find the
leak and repair.
The thermocouple is not
warm enough.
Repeat the starting operation,
keeping the gas valve button
depressed for a longer time.
Excessive gas supply. 1. Check the pressure regulator,
and replace if necessary.
2. Check that fan motor works
properly.
3. Check, and use a larger
cylinder, or two or more in
parallel.
4. Investigate cause, check to
ensure there are no
obstructions to air flow.
Check adequate ventilation
is provided. See also
‘Motor does not Start’.
FAULT CAUSE REMEDY
Heater stops during
operation.
2. Faulty motor/capacitor
3. Lock out of appliance
due to overheating.
TROUBLESHOOTING
4. Gas leaks from the
supply hose or from
the tap.

12
WIRING DIAGRAMS
IMPORTANT: The wiring to these heaters should not be tampered with under
any circumstances. Should any wiring problems occur, contact your nearest
CLARKE dealer or a qualified electrician.
LITTLE DEVIL & DEVIL 650/660SS
B1 Safety Thermostat
G1 Gas Valve
M1 Fan Motor
Q1 Switch
Q2 Piezoigniter
S1 Ignition Electrode
S2 Thermocouple
Y1 Solenoid Valve
DEVIL 850/860SS & 1250/1260SS
B1 Safety Thermostat
G1 Gas Valve
M1 Fan Motor
Q1 Switch
Q2 Piezoigniter
S1 Ignition Electrode
S2 Thermocouple
Y1 Solenoid Valve

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WIRING DIAGRAMS
DEVIL 1850 & DEVIL 3000
B2 Safety Thermostat
M1 Fan Motor
Q1 Switch
Q2 Piezoigniter
Q3 Voltage Selector
S1 Thermocouple
S2 Ignition Electrode
Y1 Solenoid Valve
Y2 Gas Valve
C Capacitor
DEVIL 3150
B2 Safety Thermostat
M1 Fan Motor
Q1 Switch
Q2 Piezoigniter
Q3 Voltage Selector
S1 Thermocouple
S2 Electrode
Y1 Solenoid Valve
Y2 Gas Valve

14
PARTS DIAGRAM - LITTLE DEVIL/SS

15
PARTS LIST - LITTLE DEVIL /SS
No. Description Part No. No. Description Part No.
1 Triangular Guard 20620016
2 Rivet 20230196
3 Casing (painted) 20630075
Casing (stainless) 20620444
4 Handle 20010007
5 Rivet 20230191
6 Screw 20230013
7 Chamber 20620470
8 Screw 20230010
9 Rear Guard 20010094
10 Motor 20400023
11 Fan 20200014
12 Coupling 20010038
13 Bracket 20230251
14 Safety Thermostat 20360008
15 Circlip 20230223
16 Burner 20622306
17 Ignition Electrode 20300004
18 Screw 20230013
19 Cable 20390001
20 Thermocouple 20130004
21 Gas Valve 20140001
22 Cable 20390039
23 Solenoid Valve 20420003
24 Cable 20390014
25 Cable 20390136
26 Gas Nozzle 20210099
27 ‘L’ Fitting 20120002
28 Burner Support 20010053
29 Plastic Base 20010052
30 Switch 20320005
31 Switch Cover n/a
32 Rivet 20230194
33 Power Cable 20390348
34 PiezoElectric Igniter 20320019
35 Cable 20390217
36 Gas Hose(1.5m)UK 20160007
37 Pressure Regulator 20150000
38 Safety Valve 20140002
39 Gasket 20020013
40 Bottle Adaptor (IT) 20120050
41 Bottle Adaptor (Fr) 20120051
42 Nut 20230128
43 Inlet Fitting (UK) 20100034

16
PARTS DIAGRAM - DEVIL 650/660

17
PARTS LIST - DEVIL 650/660
No. Description Part No. No. Description Part No.
1 Triangular Guard 20620016
2 Rivet 20230196
3 Casing (painted) 20630076
Casing (stainless) 20620445
4 Handle 20010007
5 Rivet 20230191
6 Screw 20230013
7 Chamber 20620471
8 Screw 20230010
9 Rear Guard 20010094
10 Motor 20400023
11 Fan 20200014
12 Coupling 20010038
13 Bracket 20230251
14 Safety Thermostat 20360008
15 Circlip 20230223
16 Burner 20622306
17 Ignition Electrode 20300004
18 Screw 20230013
19 Cable 20390001
20 Thermocouple 20130004
21 Gas Valve 20140001
22 Cable 20390039
23 Solenoid Valve 20420003
24 Cable 20390014
25 Cable 20390136
26 Gas Nozzle 20210047
27 ‘L’ Fitting 20120002
28 Burner Support 20010053
29 Plastic Base 20010052
30 Switch 20320005
31 Switch Cover n/a
32 Rivet 20230194
33 Power Cable 20390348
34 PiezoElectric Igniter 20320019
35 Cable 20390217
36 Gas Hose(1.5m)UK 20160007
37 Pressure Regulator 20150003
38 Safety Valve 20140004
39 Gasket 20020013
40 Bottle Adaptor (IT) 20120050
41 Bottle Adaptor (Fr) 20120051
42 Nut 20230128
43 Inlet Fitting (UK) 20100034

18
PARTS DIAGRAM - DEVIL 850/860

19
PARTS LIST - DEVIL 850/860
1 Front Grille 20240009
2 Casing 20630950
3 Rivet 20230197
4 Rivet 20230191
5 Handle 20010006
6 Chamber 20620455
7 Rivet 20230198
8 Screw 20230066
9 Rear Grid 20010095
10 Motor 20400019
11 Coupling 20010038
12 Fan 20200021
13 Switch 20320003
14 Switch Cover n/a
15 Power Cable 20390348
16 Burner 20621488
17 Nut 20230127
18 Screw 20230019
19 Circlip 20230223
20 Burner Disc 20621836
21 Safety Thermostat 20360008
22 n/a
23 Thermocouple 20130002
24 Electrode 20300000
25 Piezo-ignitor 20320019
26 Cable 320mm 20390000
27 Cable 230mm 20390002
28 Nut 20230127
29 Nozzle 20210038
30 Burner Support 20650006
31 Fitting 20120053
32 Bulkhead 20010019
33 Lower Support 20010055
34 Knob 20010029
35 Gas Valve 20140001
36 Solenoid Valve 20420011
37 Gas Hose 20160007
38 Cover 20010021
39 Pressure Regulator 20150006
40 Nipple 20120045
41 Fitting 20120054
42 Copper Pipe 20170002
43 Screw 20230065
44 Fixing Plate 20010030
45 Voltage Selector 20320021
46 Cable 210/100mm 20390039
47 Cable 440mm 20390054
48 Cable 480mm 20390064
No. Description Part No. No. Description Part No.

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PARTS DIAGRAM - DEVIL 1250/1260