Clarke CONTRACTOR GRH30 Mode d’emploi

OPERATION & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS DL0223

TWIN HEAD GAS RADIANT HEATER

MODEL NO: GRH30

PART NO: 6920019

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

INTRODUCTION

Thank you for purchasing this CLARKE heater.

This portable gas radiant heater is designed to give safe, efficient and reliable

operation and is for use with Propane Gas only. Propane gas bottles are

readily available from builders merchants or gas suppliers.

The heater is intended for drying and the warming of commercial/industrial

buildings where adequate ventilation is provided.

• It must always be operated as prescribed in this manual.

• It is not intended for domestic use or for the heating of habitable areas.

• It is not intended to be used to reach and maintain a certain level of

human thermal comfort within an enclosed space.

• It is not intended to be used in enclosed areas with restricted ventilation.

• It is not for use in areas with high levels of fluctuating drafts.

• It is not intended for warming animals or live stock.

• We recommend the use of a carbon monoxide detector.

As with any equipment, optimum performance will only be achieved if the

correct application and servicing procedures are followed.

Proper combustion depends upon correct air flow and the heater must not be

modified or operated with parts removed or missing. Likewise, safety systems

must not be circumvented or modified in order to operate the heater.

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.

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.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

GENERAL SAFETY PRECAUTIONS

Read and ensure you fully

understand the following precautions

and the hazards associated with this

type of equipment.

1. Check the heater thoroughly for

damage. NEVER operate a

damaged heater.

2. DO NOT modify the heater or

operate a heater which has been

modified.

3. Use only propane gas (LPG).

4. Use only a VAPOUR WITHDRAWAL

propane supply. If there is any

question about vapour with-

drawal, ask your propane dealer.

5. Position the propane bottle

vertically (shut-off valve up).

Secure it from falling or being

knocked over and protect from

damage.

6. DO NOT direct the heater towards

the gas bottle.

7. IMPORTANT: Use only the hose

and regulator assembly provided

with the heater. Inspect the hose

assembly before each use of the

heater. If there is excessive

abrasion or wear, or hose is cut,

replace with the hose assembly

listed on the parts list (page 14)

before using the heater.

8. Position the heater such that it is

not directly exposed to water

spray, rain and/or dripping water

9. This heater is for indoor use only in

well ventilated areas.

10. If at any time, gas odour is

detected, IMMEDIATELY STOP

operation until the source of the

gas has been located & rectified

11. DO NOT use to heat or cook food.

12. DO NOT place the heater near

combustible materials such as

curtains, furniture etc. Allow at

least 1 metre clearance.

13. Due to the high surface

temperatures, users must observe

sufficient clearance to avoid

burns or clothing ignition.

14. Place the bottle on a firm, level

surface.

15. DO NOT use with ductwork. DO

NOT restrict air circulation.

16. DO NOT move, handle or clean

while hot or burning.

17. Use only in accordance with local

codes of practice.

18. DO NOT apply any torsional stress

to the hose.

19. DO NOT leave the heater

un-attended, for example, left on

at night.

20. The heater is designed to heat

enclosed areas such as

workshops. DO NOT use the

heater for any other function. It is

not suitable for drying clothes or

laundry.

21. Young children must be kept

away unless continuously

supervised.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

FRESH AIR REQUIREMENTS

•DO NOT use in unventilated areas.

• The flow of combustion and ventilation air must not be obstructed.

RISKS OF CARBON MONOXIDE POISONING

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.

• 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.

• CO can build up in a confined space and failure to provide

adequate ventilation can be fatal.

The early symptoms of carbon monoxide poisoning are:

•headaches

• dizziness

•nausea

• dry mouth or sore throat

•blurredvision

• shortness of breath

• confusion

• loss of consciousness

Should anyone show these symptoms they must GET FRESH AIR IMMEDIATELY.

Turn off the heater and have it serviced before using it again.

Be sure to follow all warnings in this manual.

WE RECOMMEND THE USE OF A CARBON MONOXIDE DETECTOR

WARNING: PROVIDE AT LEAST A 1M2OPENING OF FRESH, OUTSIDE AIR

WHILST USING THIS HEATER. IF FRESH OUTSIDE AIR VENTILATION IS NOT

PROVIDED, CARBON MONOXIDE POISONING CAN OCCUR.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

IF YOU SMELL GAS

Liquid Propane gas has a man-made

odourant added specifically for

detection of gas leaks.

If a leak occurs you should be able to

smell the gas. Since Propane (LP) is

heavier than air you should smell for

the gas odour near to the floor. ANY

GAS ODOUR requires immediate

attention.

1. DO NOTHING that could ignite the

gas. DO NOT operate any

electrical switches. DO NOT

unplug any power supply or

extension cables. DO NOT light

matches or cause any other

source of flame or spark. DO NOT

use your phone.

2. Get everyone out of the building

and away from the area

immediately.

3. Close all propane (LP) gas bottle

fuel supply valves.

4. Propane (LP) gas is heavier than

air and may settle in low areas.

When you have reason to suspect

a propane leak, keep out of all

low areas.

5. Call your fire department. DO NOT

re-enter the building or area.

6. Stay out of the building and away

from the area until declared safe

by the firefighters.

7. FINALLY. Let the firefighters check

for escaped gas. Have them

ventilate the building and area

before you return. Properly

trained service people must repair

any leaks, check for further

leakages and then re-light the

heater for you.

8. IF YOU SMELL EVEN A SMALL

AMOUNT OF GAS, CONTACT YOUR

FIRE DEPARTMENT. DO NOT WAIT!

NO ODOUR DETECTED

1. Some people cannot smell the

odour added to propane (LP).

You must determine if you can

smell the odourant in this fuel.

2. Learn to recognize the odour of

propane (LP) gas. Local propane

(LP) gas dealers may give you a

“scratch and sniff” pamphlet. Use

it to become familiar with the fuel

gas odour.

3. Smoking can decrease your

ability to smell. Being around an

odour for a period of time can

affect your sensitivity to that

particular odour. Odours present

in animal confinement buildings

can mask fuel gas odour.

ODOUR FADING

1. The odourant in propane (LP) gas

is colourless and the intensity of its

odour can fade under some

circumstances.

2. Propane (LP) gas odour may differ

in intensity at different levels.

Since Propane (LP) gas is heavier

than air, there may be more

odour at lower levels.

3. Always be sensitive to the slightest

gas odour. If you continue to

detect any gas odour, no matter

how small, treat it as a serious

leak.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

FEATURES OF THE GRH30

Understanding the basic operation of the heater will reinforce the need to

maintain it in top condition at all times whilst always observing the safety

precautions.

The heater comprises of three basic systems:

1. The gas system.

2. The ignition system.

3. The safety control system.

GAS SYSTEM

The gas supply to the heater is by means of a high pressure hose, connected

to a LPG bottle via a pressure regulator. When the gas shut off valve is

opened, gas will flow to the control valve and finally into the burner.

This heater is designed for use with PROPANE GAS ONLY. Gas bottles are readily

available from builders merchants or gas suppliers etc.

This heater is designed to operate with a minimum 20 pound (9 kg) propane

bottle. Note that less gas is vaporised at lower temperatures. Your local

propane gas dealer will help you select the proper gas supplies.

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 connected to the control

valve. As the thermocouple heats up, the control valve opens so that after a

short period, the control valve button (see Operation page 10) may be

released and the gas flame is established.

SAFETY CONTROL SYSTEM

Should the flame extinguish for any reason the thermocouple will quickly cool,

causing the control valve to close, shutting off the gas supply.

Additionally, the heater is fitted with a ‘Tip Over Switch’ which operates should

the heater be tilted by more than 35-40 degrees, thereby shutting off the gas

supply.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

INSTALLATION

UNPACKING

Remove the heater from the carton and remove all protective material used

for shipment. Check the heater for possible shipping damage. Should any

damage be apparent, please notify your CLARKE dealer immediately.

ASSEMBLING THE SUPPORT STAND

1. Connect the tube base section to the

upper tube support section and secure

with the wing nut supplied.

2. Connect the support bracket to the

tube base section as shown and secure

with the wing nuts supplied.

LOCATING THE HEATER

Although a ‘tip-over’ switch is fitted, the heater and propane gas bottle must

both be located on a hard, level surface to minimize the risk of accidental

tipping. The propane gas bottle should be adequately restrained if needed.

Only operate this heater with the supply bottle in the upright position.

This heater must only be used in locations where the potential for damage to

the heater or personal injury (burns), is reduced to a minimum.

The heater must be located where it will not be exposed directly to rain and/or

dripping water.

Use of this heater in a drafty area reduces its efficiency. Wherever possible,

operate in a draft free area.

The heater must always be directed away from the propane gas bottle.

Position the heater at a safe distance of 1 metre from combustible materials.

The heater must not be used on floors covered in combustible materials.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

GAS CONNECTION

The hose for connecting the heater to the gas bottle is supplied loose and

must be fitted by the user.

Make the connection to the propane bottle in a well ventilated area using the

regulator and hose assembly supplied.

1. Attach the hose to the inlet

connection and tighten using a

9/16 spanner.

2. Remove the protective plug by

unscrewing clockwise.

3. Attach the regulator to the gas

bottle ensuring the bottle

connection is perfectly clean. Blow

out with compressed air if

necessary to blast away any dust or

dirt. (Use eye protection when

working with compressed air).

WARNING: PROPANE GAS BOTTLES MUST BE USED AND STORED IN

ACCORDANCE WITH THE ‘HIGHLY FLAMMABLE LIQUIDS AND LIQUEFIED

PETROLEUM GASES REGULATIONS 1972.

WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A

FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE,

PERSONAL INJURY OR LOSS OF LIFE.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

4. Check the bullnose connection on

the regulator for any visible

damage before connecting to the

bottle.

5. Place the regulator on the bottle

connection and hand tighten by

turning anti-clockwise.

6. Tighten firmly using a gas spanner

(or an adjustable spanner),

continuing in an anti-clockwise

direction.

7. Simply turn the valve hand wheel anti-clockwise when you need to start

the flow of gas. Ensure that you turn the bottle off when not in use.

8. In order to reduce the risk of icing up when operating for long periods at

maximum capacity, you should use a larger capacity gas bottle.

9. Open the bottle gas valve and check all gas connections with a soap and

water solution ONLY. NEVER USE A FLAME.

10. Use a full bottle wherever possible with good air circulation and no frost on

the bottles.

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

OPERATION

FIRST USE

Read these instructions carefully. DO NOT allow anyone who has not read the

instructions to light, adjust, or operate this heater.

DO NOT attempt to operate the heater with any fuel other than LPG (liquid

propane gas).

The heater reaches a very high temperature and during first use you may

notice an odour coming from the heater. This is quite normal and will disperse

quickly.

(It is recommended the heater is initially run outdoors on the first occasion to

enable the odour to clear).

Set the burner at the required angle to project the heat forward as shown.

WARNING: BEFORE STARTING THE HEATER YOU MUST ENSURE THAT THE

MINIMUM VENTILATION REQUIREMENTS ARE OBSERVED TO AVOID THE

RISK OF CARBON MONOXIDE POISONING.

WARNING: THIS HEATER WILL BE HOT DURING NORMAL OPERATION.

AVOID PHYSICAL CONTACT. DO NOT ALLOW CLOTHING OR OTHER

COMBUSTIBLE MATERIALS TO TOUCH THE HEATER.

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