Clarke MGH2 User manual

This product is not suitable for primary heating purposes
USER INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC03/23
FOLDING MOBILE GAS HEATER
MODEL NO: MGH2
PART NO: 6920028

2
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
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 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 purchase
giving you long and satisfactory service.
Read these instructions carefully. DO NOT allow anyone who has not read
these instructions to light, adjust or operate this heater.
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.

3
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
THE FOLLOWING TABLE ADDRESSES THE INFORMATION
REQUIREMENTS OF REG.2015/1188 & ERP COMPLIANCE
Item Symbol Value Unit
Fuel
LPG butane Gaseous G30
Space Heating Emission(*) NoX62 mg/kWh
Indirect heating fuctionality: [yes/no] No
Heat Output
At nominal heat output Pnom 4.2 kW
At minimum heat output (indicative) Pnom 1.5 kW
Auxiliary electricity consumption
At nominal heat output elmax N/A kW
At minimum heat output el min N/A kW
In standby mode elSB N/A kW
Useful Efficiency (NCV)
At nominal heat output nth, nom 100 %
At minimum heat output nth, nom N/A %
Type of heat output/room temperature control (select one)
Single stage heat output, no temperature control Yes
Two or more manual stages, no temperature control No
With mechanical thermostat temp control No
With electronic temperature control No
Electronic temperature control with day timer No
Electronic temperature control with week timer No
Other control options (multiple selections possible)
Room temperature control with presence detection No
Room temperature control with open window detection No
Room temperature control with distance control option No
Room temperature control with adaptive start control No
Room temperature control with working time limitation No
Room temperature control with black bulb sensor No

4
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
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 broken parts
or anything that may affect its function. Any damage should be properly
repaired or the part replaced. If in doubt, DO NOT use. Consult your local
CLARKE 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 CLARKE 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 unsupervised when lit - someone should always be
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 positioned as described on page 9.
18. 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.
19. This heater will be hot when in operation and due care should be taken.

5
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
CARBON MONOXIDE HAZARDS
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 its working
life 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:
• 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
• Between 1m and 3m 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.
WARNING: LACK OF VENTILATION CAN CAUSE CARBON MONOXIDE
POISONING WHICH CAN BE FATAL.

6
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
FEATURES OF THE MGH2 HEATER
The MGH2 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 LPG/Butane gas bottle between
5 and 15kg capacity. Gas bottles are not supplied, but are readily available
from builders merchants or gas suppliers etc.
The minimum surrounding air temperature rating for the heater is min 5oC -
maximum +40oC.
IGNITION COMPONENTS
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 10) 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 CO2concentration in
the air supply to the heater exceeds a pre-set value. The room should
therefore be well ventilated at all times.
NOTE: 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
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
PREPARATION
When unpacking, check the heater for any damage that may have occurred
in transit and notify your CLARKE dealer immediately should any be apparent.
The heater is supplied with the following fittings;
• 500mm Gas hose
• Jubilee clips
• 21mm snap-fit regulator
•Screws
• Round thumb screws
• Castor wheels & fittings
• Spanner
ASSEMBLING THE CABINET/HOUSING
The castor wheels are supplied loose and require fitting.
1. Attach the wheels to the base of the heater and tighten the nuts.
• A spanner is supplied for this purpose.
2. Fold the side panels
into position and
align with the base
and top panels.
Secure in position at
the top and bottom
using the long
machine screws at
the base. Add the
hand-knobs at the
top.
3. Fit the gas bottle
retainer to the
cabinet using the
short screws.
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.

8
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
INSTALLING THE GAS 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. Secure the gas regulator to the
gas hose with the screwed hose
clip supplied.
3. Place the filled gas bottle in 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 as described below.
6. Secure the gas bottle in position 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:
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-ventilated area.
Contact your CLARKE dealer or gas supplier for assistance.
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.
CAUTION: DO NOT USE IF A LEAK IS FOUND. DO NOT USE A NAKED
FLAME FOR TESTING. DO NOT OPERATE ANY ELECTRICAL EQUIPMENT IN
THE PRESENCE OF A GAS LEAK.

9
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
POSITIONING THE HEATER
The heater must be located on a hard, level surface to minimise the risk of
accidental tipping with the gas bottle held by the bottle retainer. DO NOT
operate this heater with the gas 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 20cm 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
The heater must only be positioned in a room which is well ventilated. DO NOT
operate in a caravan, boat, or any room of less than 40m3in volume.
Ventilation is essential to reduce the dangers of carbon monoxide poisoning,
and from oxygen depletion.
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.
WARNING: IF FRESH, OUTSIDE AIR VENTILATION IS NOT PROVIDED,
CARBON MONOXIDE POISONING COULD OCCUR.
Room size Ventilation
Low Level High Level
84 m3105 m2105 m2

10
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
OPERATION
This heater, including the hose and regulator assembly, must be inspected
before each use and at least annually. If the hose shows evidence of damage
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.
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.
Once the heater is alight, turning the control knob to MEDIUM or HIGH will light
the second and third panel automatically.
5. 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.
6. 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.

11
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
CHANGING THE SETTING
1. To select the desired heating level, press the control knob down and rotate
until the knob locks at the desired position (Low, Medium, High). DO NOT
operate between the locked positions.
TURNING THE HEATER OFF
1. Set 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
• 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 o hose. 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.
• 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.

12
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
CLEANING AND MAINTENANCE
CLEANING
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, in which case,
eye protection should be worn. 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 gas outlets.
4. Wipe the heater completely dry before use, ensuring that no water gets
into the burners.
5. Never use abrasive cleaners as they may damage the paint finish.
GENERAL MAINTENANCE
1. Inspect the 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.
2. With no gas bottle in the heater, the unit can take up less space in storage
by removing the gas bottle retainer and the other fixings described on
page 7 and the panels of the cabinet folded together.
WARNING: NEVER ATTEMPT TO SERVICE THE HEATER WHILE IT IS
CONNECTED TO THE GAS SUPPLY. ALLOW TO COOL BEFORE SERVICING.

13
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
TROUBLESHOOTING
PROBLEM CAUSE REMEDY
Pilot light will not light
automatically.
No spark across
electrode gap.
Request service technician to
check the piezo-electric switch is
functioning correctly.
Check the electrical lead to the
pilot light is not damaged.
Pilot light will not light
automatically but
switch & lead are OK
and the pilot will light
using a match.
Incorrect position of
spark in relation to
gas flow.
Request service technician to re-
position spark plug electrode so
that spark jumps across gas flow.
Heater will not
remain alight when
pressure is released
from the control
knob.
Electro-magnetic
contact closes while
heater is alight.
Request service technician to:
a) ensure that the thermocouple
probe is located in the pilot
flame.
b) ensure good connection
between thermocouple and
valve.
c) check thermocouple
d) check electromagnetic valve
After changing to
maximum position
with all 3 burners
alight, one or more
appears below
normal intensity.
a) blocked jets
b) partially blocked
supply tube
c) gas running out.
Request service technician to:
a) remove and clean blocked jet
b) remove the supply tube and
jets and blow through tube.
Difficulty in changing
from Low/Medium/
High
Air draught directed
away from first
nozzle. Position of the
pilot flame incorrect.
a) Relocate the heater so that it
is not affected by draughts.
b) Request service technician to
adjust pilot so that flame is
closer to bottom corner of the
second burner as well as first
burner.
Smell of gas Gas leakage from
hose or tube
connection
Carry out leak test to determine
source as described on page 8.
Pilot flame appears
red.
Dirt in gas nozzle Clean out any dust with
compressed air

14
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
SPECIFICATIONS
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. Always consult the
heater’s data plate.
PROBLEM CAUSE REMEDY
Smell of burning Missing piece of
ceramic plate.
Inspect perimeter of each
ceramic plate and locate
position of missing material.
Repair with fire cement and
leave to set for 24 hours.
Patchy combustion
on ceramic plates
Dirty gas outlets.
Grime on ceramic
plates
Clean out any dust with
compressed air
Model Number MGH2
Dimensions (WxDxH) mm 460 x 420 x 740
Weight 8.2kg
Fuel LPG/Butane G30 Gas
Max Gas Consumption (kg/hr) 305 g/h
Max Rated Input 4.2 kW (14330 btu)
Heat settings High - 4.2 kW
Med - 2.8 kW
Low - 1.5 kW
Operating temperature Min 5oC / Max 40oC
Supply pressure 30 mbar
Gas container size 5kg to 15kg (max 32cm dia x 55cm high)

15
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
COMPONENT PARTS

16
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
COMPONENT PARTS
No Description No Description
1 Panel 19 ODS gas pipe assembly
2 Lower thermal baffle 20 Burner assembly
3 Top thermal baffle 21 Nozzle assembly
4 Ceramic tile holder 22 Nozzle assembly
5 Base bracket 23 Hinge pin
6 Gas valve 24 ODS pilot
7 Switch mounting 25 Ignition cable
8 Igniter 26 Thermocouple cable
9 Control knob 27 Anti-tilt switch
10 Left side panel 28 Front panel
11 Top panel 29 Front grill
12 Right side panel 30 Screw
13 Cylinder holder 31 Screw
14 Bottom panel 32 Thumb screw
15 Caster wheel 33 Nut
16 Gas pipe assembly (burner 1) 34 Gas regulator valve
17 Gas pipe assembly (burner 2) 35 Hose clip
18 Gas pipe assembly (burner 3) 36 Connecting hose

17
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
DECLARATION OF CONFORMITY - UKCA

18
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
DECLARATION OF CONFORMITY - CE

19
Parts & Service: 020 8988 7400 / E-mail: [e-mail] or [e-mail]
OTHER HEATERS FROM THE CLARKE RANGE