Clarke MGH1 Installation and operation manual

OPERATING & MAINTENANCE
INSTRUCTIONS GC0911
Mobile Gas Heater
Model No: MGH1
PART NO: 6920021

2
INTRODUCTION
Thank you for purchasing this CLARKE Mobile Gas Heater.
This portable gas heater is designed to give safe, efficient and reliable
operation, and is for use with LPG/Butane gas only. Gas bottles are not
supplied with the unit, but are readily available from builders merchants or
gas suppliers.
Before attempting to use the heater, please read this manual throughout and
follow the instructions carefully. Thoroughly familiarise yourself with this
product & its operation in order to ensure the safety of yourself and others
around you. Henceforth, you can look forward to the heater giving you long
and satisfactory service.
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 it’s
intended purpose.
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 PROTECTION
If disposing of this product or any damaged components, do not
dispose of with general waste. Metal products should be taken to your
local civic amenity site for recycling of metal products.
PARTS AND SERVICING
For parts & Servicing, please contact your nearest dealer, or
CLARKE International, on one of the following numbers.
PARTS & SERVICE TEL: [phone]
PARTS & SERVICE FAX: [phone]
or e-mail as follows:
PARTS: [e-mail]
SERVICE: [e-mail]

3
Please note that 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.
1HGM
rebmuNtraP1200296
thgieWgk8.8
)HxWxL(snoisnemiD mm537x053x024
leuF )elttobgk51(saGenatuB/GPL
noitpmusnoCsaGmumixaMH/g503
tupnIdetaRxaM )rh/utB05341(Wk2.4
sgnitteStaeH
05341(Wk2.4-hgiH)rh/utB
8099(Wk9.2-deM)rh/utB
6925(W
k55.1-woL)rh/utB
erutarepmeTgnitarepO C°04xaM/C°5niM
erusserPylppuS rabm82
noitanitseDfoseirtnuoCEI&BG
CONTENTS
Introduction ............................................................................................ 2
Guarantee .............................................................................................. 2
Environmental Protection ...................................................................... 2
Parts & Servicing .................................................................................... 2
Technical Specification ......................................................................... 3
General Safety Precautions .................................................................. 4
Carbon Monoxide Warning .................................................................. 5
Features of the MGH1 ............................................................................ 6
Installation .............................................................................................. 7
Heater Preparation ................................................................................ 8
Cleaning and Maintenance ............................................................... 11
Troubleshooting .................................................................................... 12
Parts Lists and Diagrams ..................................................................... 13
Declaration of Conformity .................................................................. 15
TECHNICAL SPECIFICATION

4
GENERAL SAFETY PRECAUTIONS
1. ALWAYS read and ensure you fully understand the following precautions
and the hazards associated with this type of heater.
2. ALWAYS check for damage before using the heater. Check for breakage
of parts and any other condition that may affect the function of the
heater. Any damage should be properly repaired or the part replaced. If
in doubt, DO NOT use. Consult your local dealer.
3. ALWAYS keep children and animals well away from heater at all times.
4. NEVER carry out any modifications to this product. If experiencing difficulty
of any kind consult your local dealer.
5. NEVER move the heater when it is lit.
6. Use ONLY LPG/Butane gas. Ensure the gas bottle is correctly installed and
check for leaks following replacement, using soapy water. NEVER use a
naked flame to test for leaks.
7. ALWAYS ensure all gas hose and regulator connections are GAS TIGHT, and
the hose is not kinked.
8. NEVER use the heater where gasoline, paint thinner or other highly
flammable vapour or high dust content is present.
9. ONLY use in well ventilated areas. Provide a ventilation opening to fresh,
outside air.
10. ALWAYS locate the heater on a stable, firm level surface.
11. ALWAYS ensure that ample ventilation is present if the heater is being lit
following a long period without use.
12. Use heater in accordance with any applicable fire regulations.
13. NEVER use the heater in high-rise flats, in basements living or sleeping
areas, in vehicles or caravans.
14. NEVER leave a heater, when lit, unsupervised - an individual should always
be made responsible for monitoring it. Never leave the heater alight while
sleeping.
15. NEVER move, handle, replenish gas supply or service the heater when it is
hot, or operating. Turn it off and wait for it to cool down first.
16. Use ONLY the regulator supplied with the heater.
17. ALWAYS ensure that the heater is correctly positioned as described on
page 7.
18 This heater will be hot when in operation and due care should be taken.
19. Never store gas cylinders any closer than 2 m from open drains, gullies or
openings to cellars. LPG is heavier than air and can collect at low levels.
20. Read these instructions carefully. Do not allow anyone who has not read
these instructions to light, adjust or operate this heater.

5
CARBON MONOXIDE WARNING
WARNING!
Lack of ventilation can cause Carbon Monoxide poisoning.
Carbon Monoxide poisoning can kill.
Carbon Monoxide is a highly toxic, odourless, colourless and tasteless gas, created
by the incomplete combustion of carbon compounds due to a lack of available
oxygen in an enclosed space.
The 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 living at high altitudes, are more likely to be effected
by carbon monoxide than others.
CARBON MONOXIDE ALARMS
Due consideration should be given to the dangers of carbon monoxide
poisoning following incomplete combustion in an enclosed space. Carbon
monoxide detectors to BS EN 50291 are available for use in domestic
premises.
Where a new appliance is installed in a dwelling, a carbon monoxide alarm
should be provided in the room where the appliance is located.
Carbon monoxide alarms should comply with BS EN 50291:2001 and be
powered by a battery, designed to operate for the working life of the alarm.
The alarm should incorporate a warning device to alert users when the
working life of the alarm is due to pass. Mains-powered BS EN 50291 Type A
carbon monoxide alarms with fixed wiring (not plug-in types) may be used as
alternative applications, provided they are fitted with a sensor failure warning
device.
The carbon monoxide alarm should be located in the same room as the
appliance:
a. On the ceiling at least 300 mm from any wall or, if located on a wall, as
high up as possible (above any doors and windows) but not within 150 mm
of the ceiling; and
b. Between 1 m and 3 m horizontally from the appliance.
Note: Further guidance on the installation of carbon monoxide alarms is
available in BS EN 50292:2002 and from manufacturers instructions. Provision
of an alarm should not be regarded as a substitute for correct use and
regular servicing.

6
FEATURES OF THE MGH1 HEATER
The MGH1 gas heater comprises three groups of components:
GAS SUPPLY COMPONENTS
The gas supply to the machine is by means of a high pressure hose,
connected to a gas cylinder, via a pressure regulator.
When the gas valve is opened, gas will flow to the control valve and finally
the burner. The heater can be operated at one of 3 settings using 1,2 or all 3
burner plates.
This heater is designed only to be used with a 15 kg LPG/Butane gas bottle.
Gas bottles are not supplied, but are readily available from builders mer-
chants or gas suppliers etc.
The minimum surrounding air temperature rating for the heater is min 5oC -
maximum +40oC.
IGNITION COMPONENTS
An igniter is positioned beside the Pilot Light. When the ignition button is
pressed, a 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 Safety Cut-Off Valve,
causing the valve to open, so that after a short period, the Control Valve (see
‘Lighting the Heater’ on page 9) may be released, and the pilot flame is
established.
SAFETY COMPONENTS
The heater incorporates the following safety devices that will cause it to shut
down in unsafe conditions.
The Flame Failure Valve will shut off the gas if the flame extinguishes for any
reason. When the thermocouple quickly cools down, the gas supply is shut off
so that the heater will shut down automatically.
The Oxygen Depletion Sensor will shut off the gas if the CO2 concentration in
the air supply to the heater exceeds a pre-set value. The room should there-
fore be well ventilated at all times.
The Anti-Tilt Switch will turn off the heater if it is tipped over. If this activates, set
the heater upright, check for obvious damage and wait 5-10 minutes before
attempting to re-light the heater. This device may also operate if the heater Is
knocked against or bumped.

7
INSTALLATION
When unpacking, check the heater for any damage that may have occured
in transit and notify your Clarke dealer immediately should any be apparent.
The only assembly required is to connect the gas supply. Do not attempt to
operate the heater with any gas other than LPG/Butane. You should have
purchased a suitable 15 kg gas bottle for use with this heater.
This heater, including the hose and regulator assembly, must be inspected
before each use and at least annually by a qualified service person. If the
hose shows evidence of excessive wear or if the hose is cut, it must be
replaced prior to the heater being put into operation. The replacement hose
shall be that specified by Clarke International in the parts list on page 14.
POSITIONING THE HEATER
The heater must be located on a hard, flat, level surface to minimise the risk
of accidental tipping and the gas bottle should be held by the bottle re-
tainer. DO NOT operate this heater with the supply bottle in any other than the
upright position.
The heater must be located such that it will not be exposed directly to
sources of water. Use of this heater in a drafty area decreases its efficiency. If
possible, operate the unit in a draft free area.
MATERIAL CLEARANCES
It is recommended that the heater be
positioned with at least 500 mm clearance
to the sides and rear.
However, any household furnishings should
be a safe distance away as they could be
adversely affected by heat.
Always position the heater facing the centre
of the room and positioned as shown in the
diagram. Never place objects on, or against
the heater.
VENTILATION
This heater must only be installed in a room
which is well ventilated. Do not operate in a caravan, boat, or any room of
less than 40 cu/m in volume. Ventilation is essential to reduce the dangers of
carbon monoxide poisoning, and from oxygen depletion.
WARNING: IF FRESH, OUTSIDE AIR VENTILATION IS NOT PROVIDED,
CARBON MONOXIDE POISONING COULD OCCUR.

8
Adequate ventilation should also considerably reduce the possibility of
condensation occurring and lessen the dangers from the presence of any
undetected gas leakage. The following table shows the smallest sizes of room
suitable for each heat setting and the ventilation which should be provided.
HEATER PREPARATION
INSTALLING THE BOTTLE
The connection to the gas bottle must be carried out in a well ventilated
area, using the regulator and hose assembly supplied with the heater. DO
NOT attempt to adjust this regulator. It has been preset at the factory to
provide safe and correct operation.
1. Remove the bottle retainer from
the back of the heater.
2. Fix the gas regulator to the gas
hose, securing it with the
screwed hose clip supplied.
3. Place the filled gas bottle into
the back of the heater with the
valve outlet facing outwards.
4. Connect the gas regulator onto
the outlet of the gas bottle using
the integral clasp.
5. When attaching the regulator to
the gas cylinder ensure the
bottle outlet is perfectly clean.
• Use compressed air if necessary to blow away any dust or dirt. When
connected, check for leaks using soapy water or liquid soap as described
below.
6. Secure the bottle with the bottle retainer.
TESTING FOR LEAKS:
This must be carried out In a well ventilated area, free from any open flame
or other sources of ignition. With the regulator connected to the cylinder,
slowly turn on the regulator and proceed as follows:
cimarecforebmuN
esunisrenrub eziSmooR noitalitneV
leveLwoL leveLhgiH
1m04
3
mc04
2
mc04
2
2m07
3
mc07
2
mc07
2
3m501
3
mc501
2
mc501
2

9
1. Brush all hose connections including pipe connections to the gas valve,
regulator connection to the bottle and gas bottle valve with a 50:50
solution of soap and water.
2. A stream of bubbles forming Is an indication of a leak. If a leak is found,
turn off the valve on the regulator, disconnect the regulator from the gas
bottle and remove the gas bottle to a cool, outdoor well-ventliated area.
Contact your Clarke dealer or gas supplier for assistance.
DO NOT USE THE HEATER IF A LEAK IS FOUND.
DO NOT USE A NAKED FLAMED FOR LEAK TESTING.
DO NOT OPERATE ANY ELECTRICAL EQUIPMENT IN THE PRESENCE OF A
GAS LEAK
3. After leak-testing is satisfactorily carried out and no leaks found, it may be
necessary to twist the cylinder slightly to allow the regulator and hose to fit
Inside the heater casing without kinking the hose.
FITTING THE BATTERY
The ignitor battery and ignition button are supplied loose and require fitting.
1. Insert the battery into the socket and screw the ignition button into place
in the top of the heater.
LIGHTING THE HEATER
The heater can be regulated to one
of three different heat settings: LOW,
MEDIUM and HIGH. To light the
heater:
1. Open the valve on the gas
regulator.
2. Press down and turn the control
knob to LOW position.
• Do not release the control knob.
3. After 10 seconds press the ignition
button until the pilot light (at the
bottom of the burner) ignites.
4. Continue to hold the control knob
down for 10-15 seconds after
ignition. If the pilot flame goes out
when releasing the button,
repeat the above operation.
Note: The first time you use a new
heater, it may be necessary to hold
the control knob down for a longer
time in order to purge air from the system.

10
Once the heater is alight, turning the control knob to MEDIUM or HIGH will
light the second and third panel automatically.
4. When the heater is in operation, watch the pilot light and check that it is
burning steadily. If it flickers or has a yellow flame, the heater should be
checked by your dealer.
5. Leave the heater burning at the LOW setting for approx 5 minutes before
turning to a higher setting.
The heater can also be started at any of the 1 (LOW), 2 (MEDIUM) or 3 (HIGH)
positions but this is not recommended.
CHANGING THE SETTING
1. To select the desired heating level, press the control knob down slightly
and rotate until the knob locks at the desired position. Do not operate
between the locked positions.
TURNING THE HEATER OFF
1. Turn and press the control knob to the START position.
2. Turn off the regulator valve on the gas bottle, and if placing the heater
into storage, disconnect the bottle.
CHANGING THE BOTTLE
Always allow the heater to cool down before removing and replacing the
bottle. Never attempt to remove the regulator while the heater is operating.
Disconnect the gas regulator from the cylinder and remove the bottle after
releasing the bottle retainer from the back of the heater.
POSSIBLE FAULTS ON STARTUP
THE HEATER DOESN'T LIGHT:
• Defective ignitor battery failing to produce a spark. Replace battery.
• Check the gas bottle Is full. Removing and tilting the bottle should reveal
the presence of LPG.
• Check the regulator Is properly attached to the bottle and the valve on
the regulator is turned on.
If this happens after the bottle has been changed, it could be:
• The bottle may have been excessively cold. Allow the bottle to reach
room temperature before attempting to start the heater.
• Air in the bottle. Hold the control knob down for a longer period of time
until the pilot and main burner light.
THE HEATER TURNS OFF BY ITSELF
• If the heater turns off by itself after continuous working, repeat the lighting
operation, following the instructions faithfully.

11
• If it goes out soon after lighting, check for drafts or for the gas bottle
running out of gas.
• If it goes out after about 30 minutes, it Is an indication that ventilation in
the room is inadequate. If so, the heater may have been shut off by the
Oxygen Depletion Sensor. Open a window or door to ventilate the room
and re-ignite.
CLEANING AND MAINTENANCE
WARNING: NEVER ATTEMPT TO SERVICE THE HEATER WHILE IT IS CON-
NECTED TO THE GAS SUPPLY. ALLOW TO COOL BEFORE SERVICING.
CLEANING (annually or as required)
1. Turn heater off and let cool down before cleaning.
2. Use a damp cloth wrung out in a solution of soapy water to clean the
exterior and bottle storage area of the heater. Use household cleaners on
difficult spots.
3. Clean inside heater using compressed air where possible. Blow air back
and forth along the entire burner face and ceramic plates until all dust
has been dislodged from surface. Take care not to knock the ceramic
plates which can become fragile in use. Use compressed air to clean the
pilot light opening and the gas outlets.
4. Wipe the heater completely dry before use, ensuring that no water gets
into the burners or pilot light area.
5. Never use abrasive cleaners as they may damage the paint finish.
GENERAL MAINTENANCE
1. Inspect heater before bringing back into use. Check connections for leaks
by applying a mixture of liquid soap and water to hose connections. Any
bubbles forming show a leak, which must be corrected before use.
2. Regularly check the flexible tubing between the regulator and heater
and replace if cracked. In the event of damage or broken components,
replacements should only be obtained from Clarke Parts & Service.
3. Have the heater inspected yearly by a qualified service agent.
STORAGE
1. For long term storage, always disconnect the bottle and store the heater
in a well ventilated area away from combustible materials. The bottle is
best kept in an outbuilding and preferably not in a basement or indoors.
Cover the heater in its original packing and keep the unit dry and dust
free.

12
TROUBLESHOOTING
MELBORP ESUAC NOITULOS
thgiltonlliwthgiltoliP.1
.yllacitamotua
.talfsiyrettaB
ssorcakrapsoN
.pagedortcele
.yrettabecalpeR
otnaicin
hcetecivrestseuqeR)a
cirtcele-ozeipehtkcehc
.yltcerrocgninoitcnufsihctiws
daelcirtceleehttahtkcehC)b
dega
madtonsithgiltolpehtot
thgiltonlliwtoliP.2
tubyllacitamotua
eradael&hctiws
ehtdnayrotcafsitas
ahtiwthgilll
iwtolip
.hctam
fonoitisoptcerrocnI
sagotnoitalernikraps
.wolf
rotnaicinhcetecivrestseuqeR-e
tahtosedortcelek
rapsnoitisop
.wolfsagssorcaspmujkraps
niamertonlliwretaeH.3
sierusserpnehwthgila
ehtmorfdesaeler
.bonklort
noc
citengamortcelE
tslihwsesolctcatnoc
.thgilasiretaeh
:otnaicinhcetecivrestseuqeR
elpuocomrehttahterusnE
)a
emalftolipnidetacolsieborp
noitcennocdoogerusnE)b
dnaelpuocomrehtneewteb
.evlav
.elpuocomrehtkcehC)c
evl
avcitengam-ortcelekcehC)d
otgnignahcretfA.4
htiwnoitisopmumixam
,thgilasemalfeerhtlla
semalferomroeno
lamr
onwolebraeppa
.ytisnetni
.stejdekcolB.)a
dekcolbyllaitraP.)b
.ebutylppus
.tuogninnursaG.)c
:otnaicinhceteci
vrestseuqeR
dekcolbnaelcdnaevomeR)a
.tej
dnaebutylppusehtevomeR)b
ehthguorhtwolbdnastej
.ebut
gnignahcniytl
uciffiD.5
MUIDEMotWOLmorf
.HGIHdna
detceridthguardriA
.elzzontsrifmorfyawa
tolipehtfonoitisoP
.tcerrocniema
lf
titahtosretaehehtetacoleR)a
.sthguardybdetceffatonsi
otnaicinhcetecivrestseuqeR)b
tsujdasiemalftahtostolip
ehtforenrocmottobotresolc
tsrifsallewsaelzzondnoces
.elzzon
.gninrubfollemS.6foeceipgnissiM
.etalpcimar
ec
hcaeforetemireptcepsnI
etacoldnaetalpcimarec
.lairetamgnissimfonoitisop
dnatnemecerifhtiwriapeR
.sruoh4
2roftesotevael
.sagfollemS.7esohmorfegakaelsaG
noitcennocebutro
enimretedottsetkaeltuoyrraC
.ecruos
sraeppa
emalftoliP.8
.der
.elzzonsagnitriDhtiwtsudynatuonaelC
.riadesserpmoc
noitsubmocyhctaP.9
.setalpcimarecno
emi
rG.steltuosagytriD
.setalpno
htiwtsudynatuonaelC
.riadesserpmoc

13
PARTS DIAGRAM

14
COMPONENT PARTS LIST
oN tsiLstraP oNtraP oN tsiLstraP oNtraP
1ellirG100HGMKZ023epiPsaG020HGMKZ
2lenaProtcelfeR200HGMKZ12elffaBlamrehT120HGMKZ
3redloHrenruB300HGMKZ22reniate
RelttoB220HGMKZ
4rosneSnoitelpeDnegyxO400HGMKZ32evlaVlortnoCsaG320HGMKZ
5epiPgnitcennoC500HGMKZ42tuNgniniateRreti
ngI420HGMKZ
6redloH600HGMKZ52lortnoCevlaV520HGMKZ
7ylbmessArenruBcimareC700HGMKZ62tuNgniniateRevlaV620HGMKZ
8)trohs(
rotcennoCrotcejnI800HGMKZ72retingInottub-hsuP720HGMKZ
9)gnol(rotcennoCrotcejnI900HGMKZ82bonKlortnoC820HGMKZ
01len
aPtnorFtenibaC010HGMKZ92tessuGelgnA920HGMKZ
11troppuStliT-itnA110HGMKZ03draoBkcaBrenruB030HGMKZ
21hctiwStliT-itnA2
10HGMKZ13ylbmessAthgiLtoliP130HGMKZ
31ydoBtenibaC310HGMKZ23esoHelbixelF230HGMKZ
41esaBtenibaC410HGMKZ33pilCeelibuJ33
0HGMKZ
51leehWrotsaC510HGMKZ43elpuoc-omrehT430HGMKZ
61elbaCnoitingI610HGMKZ53yrettaBAAA530HGMKZ
71elbaClortnoCevlaV7
10HGMKZ63rotalugeRsaG630HGMKZ
811epiPsaG810HGMKZ73gnirpS730HGMKZ
912epiPsaG910HGMKZ83paCrotingI830HGMKZ

15
DECLARATION OF CONFORMITY