S-656 MK 12 - Cooker THETFORD - Free user manual and instructions

Product Type	Gas Cooker
Brand	Thetford
Model	S-656 MK 12
Number of Burners	3
Ignition Type	Automatic electronic ignition
Gas Type	LPG (butane/propane)
Dimensions (W x D x H)	410 x 360 x 145 mm (approx.)
Cut-Out Dimensions	382 x 332 mm
Weight	6.5 kg (approx.)
Power Supply	12V DC for ignition
Gas Connection	8 mm hose or rigid pipe
Burner Output (each)	1.0 - 2.0 kW
Flame Safety Device	Yes (thermocouple)
Control Knobs	3 knobs with push-to-turn safety
Material	Stainless steel and enamel
Cleaning	Wipe with damp cloth, avoid abrasive cleaners
Intended Use	Recreational vehicles (caravans, motorhomes)
Certification	CE, UKCA
Spare Parts Availability	Through Thetford dealers and online

Frequently Asked Questions - S-656 MK 12 THETFORD

How do I ignite the burners on my Thetford S-656 MK 12?

Press and turn the control knob to the 'high' position while pushing the ignition button. You will hear a clicking sound. Once the flame is lit, hold the knob for a few seconds to heat the thermocouple, then release. If it doesn't ignite, check the gas supply and battery for the igniter.

What gas type does the S-656 MK 12 use?

It is designed for LPG (butane or propane). The gas regulator and hose must be suitable for the gas type used in your vehicle. Always check local regulations.

How do I clean the cooker?

Allow the surface to cool. Wipe with a damp cloth and mild detergent. Do not use abrasive cleaners or scouring pads. For stubborn stains, use a non-abrasive cleaner suitable for stainless steel.

What are the cut-out dimensions for installation?

The cut-out required is approximately 382 mm wide and 332 mm deep. Always refer to the installation template provided with the cooker to ensure proper fit.

The flame goes out after releasing the knob. What should I do?

This is likely due to a faulty thermocouple. Hold the knob for a longer period (up to 10 seconds) after ignition. If it still fails, the thermocouple may need cleaning or replacement. Contact an authorized service center.

Can I use this cooker on a boat?

The S-656 MK 12 is designed for recreational vehicles (caravans, motorhomes). For marine use, check if the unit is certified for marine environments. It may require additional safety features.

Where can I find spare parts?

Spare parts are available through Thetford authorized dealers, online retailers, or customer service. Common spare parts include thermocouples, control knobs, and burner caps.

How do I replace the ignition battery?

The ignition system uses a 1.5V AA battery (not included). Access the battery compartment, usually located at the front or under the cooker. Replace with the correct polarity.

What does the flame safety device do?

If the flame goes out accidentally, the thermocouple detects the temperature drop and shuts off the gas flow automatically to prevent gas leaks. This is a mandatory safety feature.

Is professional installation required?

Yes, installation must be carried out by a qualified gas engineer in accordance with local regulations. Incorrect installation can lead to gas leaks and carbon monoxide hazards.

USER MANUAL S-656 MK 12 THETFORD

Line drawing of a remote control panel with four fans and ventilation slots (no text or symbols)

USER AND INSTALLATION INSTRUCTIONS

WARNING

• This appliance must be installed by an authorised person.

• Only use this appliance in a well ventilated area.

- Read the instructions before use.

FOR USE IN

GB NL DE FR ES PT IT SE NO DK SI SK

SPINFLO LIMITED, 19 Oakham Drive, Parkwood Industrial Estate

Rutland Road, Sheffield S3 9QY, ENGLAND.

TEL: [phone] FAX: [phone]

In your own interest of safety, it is law that all gas appliances be installed by competent persons. CORGI (Confederation for the Registration of Gas Installers) registered installers undertake work to safe and satisfactory standards. Failure to install the appliance correctly could invalidate any warranty or liability claims and lead to prosecution. This appliance shall be installed in accordance with the local and national/European standards in force. Particular attention shall be given to the requirements regarding ventilation. Read the instructions before installing or using this appliance.

Provision of Ventilation

The use of a gas cooking appliance results in a production of heat and moisture in a room in which it is installed. Ensure that the kitchen is well ventilated: keep natural ventilation holes open or install a mechanical ventilation device, (mechanical extractor hood).

Prolonged intensive use of the appliance may call for additional ventilation, for example opening a window, or more effective ventilation, for example increasing the level of mechanical ventilation where present.

The room containing the cooker should have an air supply in accordance with local and national/European standards.

Position

This appliance must be positioned free from draughts, which may affect the combustion, and in a manner that will prevent the accumulation of unburnt gas. When in use ensure that air vents are not inadvertently blocked or shut off.

Important

This appliance is suitable for use with Liquid Petroleum Gas (LPG) and should not be used on any other gas. The following gas pressures should be used:-

CAT I 3 + (28-30/37) CAT I 3 B/P

BUTANE (G30) 28 – 30 mbar BUTANE (G30) 30mbar

PROPANE (G31) 37mbar PROPANE (G31) 30mbar

IMPORTANT

Before using the appliance for the first time, remove any surface protection film, ie plastic coating. Clean all surfaces with hot soapy water to remove any residual protective covering of oil and rinse carefully.

Using the Hob Burners

Each burner is controlled individually and is monitored by a flame failure sensing device. The respective knob positions are shown below:-

OFF

HIGH RATE

LOW RATE

Simple circular diagram with a central vertical line and three small dots along the perimeter (no text or symbols)

Simple circular diagram with three dots and two curved arrows, no text or symbols present.

Simple circular diagram with two parallel lines and three small dots, no text or symbols present.

To light the burner, depress and turn the knob anti-clockwise to the full rate position, apply a light to the burner or press the ignition button if fitted. On models with the flame sensing device it is necessary to hold the knob depressed during ignition and for approximately fifteen seconds after the burner has lit to allow the probe to reach temperature. Should the flame go out when the knob is released, the procedure should be repeated holding the knob depressed for slightly longer. If required the knob can be turned further anticlockwise to the simmer position. To turn the burner off, rotate the knob fully clockwise until the dot on the knob lines up with the dot on the fascia.

The burners on the appliance have fixed aeration and no adjustment is required. The burners should flame as follows:-

Propane - The flames should burn quietly with a blue/green colour with no sign of yellow tips.

Butane - Normally on initial lighting, a small amount of yellow tipping will occur and then slightly increases as the burner heats up.

Using the Grill

Control of the grill burner is identical to that used for the hob burners. Although the grill does heat up quickly, it is recommended that a few minutes preheat be allowed. The grill pan should be left in position to protect the base lining and the grill door MUST be left open while the grill is in use.

A reversible grill pan trivet enables the correct grilling height to be achieved.

Fast Toasting Trivet in high position

Grilling Sausages Trivet in high position

Grilling Steak/Bacon Trivet in high position

Grilling Chops, etc Trivet in low position

Slow Cooking Trivet removed

IMPORTANT SAFETY PRECAUTIONS

• When cooking keep children away from the vicinity. Turn pan handles inwards so they cannot be caught accidentally.
• Never leave fat or oil unattended on the hotplate.
• When finished, check that all controls are in the off position.
• This appliance must not in any circumstances be used as a space heater.

LEAKS

If a smell of gas becomes apparent, the supply should be turned off at the cylinder IMMEDIATELY.

• Extinguish naked lights including cigarettes and pipes.
• Do not operate electrical switches.
• Open all doors and windows to disperse any gas escape.
• Propane gas is heavier than air, any gas escaping will therefore collect at low level. The strong unpleasant smell of gas will enable the general area of the leak to be detected. Check that the gas is not escaping from an unlit appliance.
• Never check for leaks with a naked flame, leak investigation should be carried out using a leak detector spray.

MAINTENANCE

This appliance needs little maintenance other than cleaning. All parts should be cleaned using warm soapy water. Do not use abrasive cleaners, steel wool or cleansing powders. When cleaning the burner ring it is essential to ensure that the holes do not become blocked. The control knobs are a push fit and can be removed for cleaning. They are interchangeable without affecting the sense of operation

On units fitted with battery spark ignition, when the time taken for spark generation becomes extended, the battery should be renewed with a suitable make of long life battery.

THIS APPLIANCE MUST NOT BE MODIFIED OR ADJUSTED UNLESS AUTHORISED AND CARRIED OUT BY THE MANUFACTURER OR HIS REPRESENTATIVE. NO PARTS OTHER THAN THOSE SUPPLIED BY THE MANUFACTURER SHOULD BE USED ON THIS APPLIANCE.

WHO TO CONTACT

For service, please contact your authorised local Service Agent giving full details of the model, serial number and date of purchase.

WARNINGS

• DO NOT store or use gasoline or other flammable vapours, liquids or items in the vicinity of this or any other appliance.
  • DO NOT spray aerosols in the vicinity of this appliance while it is in operation.
• Where this appliance is installed in marine craft or in caravans, it shall not be used as a space heater.
• NEVER check for leaks with an open flame

A cut-out should be prepared in the worktop as shown in Fig.2. Heat barriers must be fitted to the front and back edges of the cut-out as shown in Fig.3 - Section B-B. The appliance should be fixed in position using woodscrews fitted through the side flanges as shown.

A direct distance of 200mm must exist between the edge of the appliance burners and any combustible material, unless protected by a layer of non-combutable material. All combustible materials such as curtains and shelves must be kept well clear of the appliance. Any fitments such as a cupboard above the unit must have a minimum clearance of 500mm between the fitment and the top of the Panrest.

In the case of appliances that do not have grills fitted, the underside of the appliance must be shielded. It is recommended that the shield be fabricated from non-combustible material, but if the enclosure is manufactured from combustible material, then a minimum air space of 100mm must exist between the material and the lowest part of the appliance.

Appliances fitted with a grill require that a grill compartment be created below the cut-out as shown in Fig.4. The compartment must be completely lined with a non-combustible material such as aluminium or stainless steel. The grill compartment must have ventilation holes at the compartment floor level and additionally include an escape route to the outside to prevent the accumulation of unburnt gasses. Any cabinets beneath the grill compartment must be sealed to prevent the ingress of unburnt gas.

CONNECTION

Gas Connection

The gas connection is made to a 8mm ∅ inlet pipe, beneath and to the rear of the appliance. Prior to connection remove the plastic protection plug from the fitting. It is recommended that the appliance be connected by copper pipe, rubber tubing MUST NOT be used.

IMPORTANT

• After installation the appliance MUST be tested for soundness
- Test ALL burners on high and low flame for flame stability.
- The gas supply input pressure MUST not rise or fall significantly from nominal when ALL appliances connected to the supply are operated simultaneously. If NOT installed to the manufacturers instructions detailed herein, we the manufacturer can not be held responsible for any problems that occur, or poor performance that is perceived/witnessed.

Hob Burner Gas valve removal/replacement

• Shut off gas supply and disconnect gas supply pipe from the unit.
• Remove the hob from the bench top.
• Remove the appropriate control knob by pulling up.
• Unscrew the gas valve retaining nut.
• From the underside of the hob, unscrew the appropriate thermocouple nut at the gas valve.
• Unscrew the appropriate gas supply pipe nut.
• Remove the appropriate gas valve clamp by unscrewing the two screws.
• Remove the gas valve.
• Replace the tap and gasket. Refit using reverse procedure.

Hob Burner Injector removal/replacement

• Remove the pan support by pulling up to release it from the plastic clips.
• Remove the appropriate burner cap and skirt.
• With a 7mm A/F socket, unscrew injector from the bottom of the burner mixing tube.
• Replace/refit using the reverse procedure.

Thermocouple removal/replacement

• Shut off gas supply and disconnect gas supply pipe from the unit.
• Remove the hob from the bench top.
• Unscrew the appropriate thermocouple nut next to the burner.
• From the underside of the hob, unscrew the appropriate thermocouple nut at the gas valve.
• Remove the thermocouple.
• Replace/refit using reverse procedure.

Grill burner removal/replacement

• Shut off gas supply and disconnect gas supply pipe from the unit.
• Remove the hob from the bench top.
• Unscrew the two screws retaining the grill burner to the hob.
• From the underside of the hob, unscrew the thermocouple nut at the grill burner.
• Lift the grill burner clear of the thermocouple and injector.
• Replace/refit using reverse procedure.

Grill Injector removal/replacement

• Follow procedure to remove grill burner
• With a 7mm A/F socket, unscrew the injector from its holder.
• Replace/refit using reverse procedure.