Miele 11909320-001-00 TWL 780 WP 9KG Heat Pump Tumble Dryer Installation Guide

June 9, 2024
Miele

11909320-001-00 TWL 780 WP 9KG Heat Pump Tumble Dryer
Installation Guide

11909320-001-00 TWL 780 WP 9KG Heat Pump Tumble Dryer

Front view

1. Mains connection cable
2. Control panel
3. Condensed water container
4. Door| 5. Plinth filter access panel
6. 4 height-adjustable feet
7. Cooling air grille
8. Drain hose for condensed water
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Rear view

  1. Protruding lid for holding when moving the machine
  2. Drain hose for condensed water
  3. Hook for winding the mains connection cable around during transport
  4. Mains connection cable

Transporting the tumble dryer
  Danger of injury to people and damage to property caused by moving the appliance incorrectly.
If the tumble dryer tips over, there is a danger of injury to people and damage to property.
Ensure that the tumble dryer is stable during transportation.

  • If the tumble dryer is being transported horizontally, it must only be tipped onto its left or right side.
  • If the tumble dryer is being transported upright and you are using a handcart or trolley, you must only transport it with its left or right side resting on the handcart or trolley.

Transporting the tumble dryer to its installation site
  Make sure the fixings at the back of the lid are secure.
Otherwise there is a danger of the lid being pulled off when carrying the appliance.
Before carrying the appliance, check that the lid is secure where it protrudes at the back of the appliance.

  • Carry the tumble dryer by the front feet and by the lid where it protrudes at the back of the appliance.

Levelling the dryer
The appliance must not be installed behind a lockable door, a sliding door or a door with a hinge on the opposite side to that of the tumble dyer, in such a way that a full opening of the tumble dryer door is restricted.

To ensure proper operation, the tumble dryer must stand perfectly level. The screw feet on the tumble dryer can be adjusted to compensate for unevenness in the floor.

  • Turn the screw feet by hand or with a flat open spanner.

  Risk of fire and explosion due to damage to the tumble dryer.
The refrigerant is flammable and explosive.
Do not make any alterations to the tumble dryer. Take measures to protect the tumble dryer against damage.

If the tumble dryer is damaged, proceed as follows:
– Avoid naked flames or anything which creates a spark.
– Disconnect the dryer from the electricity supply.
– Air the room where the tumble dryer is located.
– Contact Miele Customer Service.

Downtime after installation

  Damage to the tumble dryer by switching it on too soon.
This can damage the heat pump.
After setting up the tumble dryer, wait for at least one hour before switching it on.

Ventilation

The cool air intake at the front of the tumble dryer must not be blocked or covered. This would hinder a sufficient intake of cool air for the heat exchanger.
Do not block the gap between the bottom of the tumble dryer and the floor with plinth facings, deep pile carpet etc. This would hinder a sufficient flow of air to the tumble
dryer.
Adequate ventilation has to be provided to avoid the backflow of gases into the room from appliances burning other fuels, including open fires.
Air which is taken in to cool the heat exchanger is then blown back out of the dryer and warms up the air in the room. Ensure sufficient ventilation of the room, e.g. by opening a window. The drying time will otherwise take longer (higher energy requirement).
The heat pump that is essential to the operation of this tumble dryer generates a lot of heat inside its casing. It must be possible to dissipate this heat well.
Otherwise loads could take longer to dry or the tumble dryer might sustain damage in the long term.
Permanent room ventilation during every drying programme and the ventilation gap between the bottom of the tumble dryer and the floor are mandatory requirements at all times.

Before moving the tumble dryer again (e.g. when moving house)
A small quantity of condensed water that remains in the area around the pump after the drying process can run out if the tumble dryer is tilted.
Recommendation: start a programme  for approx. 1 minute before transportingthe dryer. Any remaining condensed water will then be fed into the condensed water container (which you will need to empty again) or out through the drain hose.

Additional installation requirements

Suitable for pushing under a worktop This tumble dryer is suitable for pushing under a worktop.
Appliance defect due to a build-up of heat.
Make sure there is adequate room for warm air from the dryer to be directed away.

– The appliance lid cannot be removed.
– The electrical socket must be located in an accessible position near the appliance.
– Drying durations may increase slightly.

Optional accessories
– Washer-dryer stack
The tumble dryer can also be combined with a Miele washing machine in a washer-dryer stack. The appropriate Miele washer-dryer stacking kit is required.
Plinth
The tumble dryer can be fitted with a plinth with drawer (please note the plinth may not be available in all countries).
Externally draining condensed water
Notes
When drying is in progress, condensed water is pumped into the condensed water container through the drain hose which is located at the back of the dryer.
The condensed water can also be drained away via the drain hose. The condensed water container will then not need to be emptied.
Hose length: 1.49 m
Maximum delivery head: 1.00 m
Maximum drain hose length: 4.00 m

Drainage accessories

– Supplied: adapter (b), hose clip (c), hose holder (e);
– Available to purchase: “Non-return valve” kit for connection to an external water connection. Non- return valve (d), hose extension (a) and hose clips (c) are supplied with the kit.

Installation conditions requiring a non-return valve

  • Danger of condensed water backflow.
    Water could flow back into the tumble dryer or be drawn into it. Backflow water could damage the tumble dryer and also the room in which it is located.
    The non-return valve should be used if the end of the hose is immersed in water, or if other water connections are installed.

Maximum delivery head with non-return valve fitted: 1.00 m
Installation conditions requiring the fitting of a non-return valve:
– Drainage into a laundry tub or floor gully where the end of the hose is immersed in water.
– Connection to a sink drain outlet.
– Connection to a drainage system already in use by another appliance, e.g. a dishwasher or washing machine.

If the non-return valve is incorrectly fitted the appliance will not drain.
The non-return valve has to be fitted with the arrow on it pointing in the direction of flow.

Arranging the drain hose
Damage to the drain hose through incorrect handling.
The drain hose can suffer damage and leak.
Do not pull on the drain hose and do not stretch it or allow it to become kinked.

There will be a small amount of residual water left in the drain hose. Have a container ready to collect this.

  • Pull the drain hose off its connection (light arrow).
  • Pull the hose out of the holders (dark arrows) and unwind it.
  • Allow any residual water to run into a container.

Examples
Drainage into a laundry tub or floor gully Use the hose holder to secure the drain hose.

Risk of water damage.
Should the end of the hose come loose, overflowing water can cause damage.
Secure the drain hose carefully (e.g., by tying it) to make sure it cannot slip.
The non-return valve can be fitted in the end of the hose.

Direct connection to a sink drain outlet
Use the hose holder, the hose clips and the non-return valve (available to purchase).

  1. Adapter
  2. Nut
  3. Hose clip
  4. End of the hose (secured with the hose holder)
  5. Non-return valve
  6. Tumble dryer drain hose
  • Fit the adapter 1 to the sink drain outlet using the nut 2.
    The nut is usually fitted with a washer which must be removed.

  • Attach the end of the hose 4 to the adapter 1.

  • Use the hose holder.

  • Use a screwdriver to tighten the hose clip 3 up close to the nut.

  • Fit the non-return valve 5 to the tumble dryer drain hose 6.
    The non-return valve 5 has to be fitted so that the arrow points in the direction of flow (i.e. towards the sink).

  •  Secure the non-return valve using hose clips.

Changing the door hinging

You can change the door hinging on this tumble dryer yourself.
For safety reasons, the tumble dryer must be disconnected from the electricity supply before changing the door hinging.

You will need:
– a T20 and T30 Torx screwdriver
– a flat head screwdriver or pointed pliers
– the lock catch cover supplied
– the door hinge cover supplied
– a soft surface (e.g. a tablecloth)

Changing the hinging over
1. Remove the door from the dryer

  • Open the door.

  • Use a T30 Torx screwdriver to unscrew the two screws on the base plate of the door hinge A.
    The door cannot fall off as it is held in place by two pins.

  • Hold the door securely and pull it forwards: to remove the door you will need to pull the base plate of the hinge with its two pins out of the dryer.

To avoid scratching the door, place it outer side downwards on a soft surface (e.g. a tablecloth).

2. Change over the door lock on the dryer

  • Use a T30 Torx screwdriver to unscrew the two screws on the door lock B.

  • Use the screwdriver to press the door lock upwards.
    The door lock will spring out of its position and can then be removed.

  • Turn the door lock through 180°.

  • Press the door lock into the openings C on the opposite side of the door opening.

  • Adjust the position of the door lock so that the screw holes line up with those in the front panel of the dryer D.

  • Secure the door lock with the two Torx screws.

3. Remove the lock catch from the door

  • First take the rubber seal off the door and place this to one side.

  • Use a T20 Torx screwdriver to remove the screw E on the lock catch.

  • Pull off the lock catch together with the lock catch cover F.

  • Remove the lock catch from the cover.
    This lock catch cover is no longer needed. However, please keep it in a safe place.

  • Insert the lock catch into the new cover supplied with the dryer.

  • Place this new cover to one side for now.

4. Dismantle the door hinge from the door
The door hinge cover must be unclipped from position G and then removed.

  • Use a screwdriver to press down gently on position G on the door hinge cover.
  • Using a little force, pull out the door hinge cover H.
    This door hinge cover is no longer needed. However, please keep it in a safe place.

5. Change the door hinge on the door

The door hinge is secured to the door with 2 angled rods. These rods need to be removed with a screwdriver or pointed pliers.

  • Insert the end of the screwdriver blade under the rod 1 and rotate it so it is in an upright position. Do the same to the other rod.

  • Use the screwdriver or pointed pliers to guide first one then the other rod 2 to the middle until each can be removed.

Useful tip: In some circumstances, the rods can be difficult to dislodge. Moving the screwdriver with a levering action while pulling at the same time may help to work the rods free.

  • Remove the door hinge and rotate it 180°.

  • Refit the door hinge on the opposite side of the door.

  • Secure the door hinge with the two rods 2.

  • Position the tip of the screwdriver under the end of the rod and then push it into its resting position 1.

You now need the new door hinge cover supplied with the tumble dryer.

  • Fit the new door hinge cover H and clip it into position.

6. Change the lock catch on the door
You now need the new lock catch cover supplied with the dryer which you have already fitted with the lock catch.

  • Push the lock catch cover F with its lock catch into position.
  • Tighten the screw E with a T20 Torx screwdriver.

Refitting

7. Refit the door

  •  Press the rubber seal back into the groove on the door.
  • Position the door in front of the dryer
  • Fit the base of the door hinge with its two pins into the openings on the dryer.

The base of the door hinge must be flush with the front panel of the dryer.
The door cannot fall off in this position.

  • Screw the door securely to the dryer at the base of the door hinge A with a T30 Torx screwdriver.

Now that you have changed the door hinging, the door will open from the opposite side.

  • Push the orange marker round to the other side so that you will see at which side to pull the door open.

Note

Please keep the lock catch and door hinge covers which were no longer needed in a safe place. These will be required if, for example, you move house and need to change the door hinging back to its original position.

Electrical connection

The tumble dryer is supplied with a mains cable with moulded plug ready for connection to a socket.
The socket should be easily accessible after the tumble dryer has been installed. If the socket is not easily accessible, ensure that a suitable means of disconnection is provided on the installation side for each pole.

Risk of fire from overheating.
Connecting the tumble dryer to a multi-socket plug adapter or to an extension lead can overload the cable.
For safety reasons, do not use an extension cable or multi-socket adapter.

All electrical work must be carried out by a suitably qualified and competent person in strict accordance with national and local safety regulations.
For safety reasons, we recommend using a suitable residual current device (RCD) in the relevant electrical installation for connecting the tumble dryer.
If the mains connection cable is damaged, it must only be replaced with a specific mains connection cable of the same type (available from Miele).
For safety reasons, such replacement may only be carried out by a suitably qualified and competent electrician or a Miele authorised service technician, in order to avoid a hazard.
The data plate indicates the nominal power consumption and the connection data. Compare this information with the data of the on-site electrical connection.
If in any doubt, consult a qualified electrician.
Temporary or permanent operation with a self-sufficient or non-mains synchronous energy supply system (e.g. isolated networks, back-up systems) is possible. A requirement  for the operation is that the energy supply system complies with all current local and national requirements that apply to stand- alone, solar and/or battery systems.
The protective measures provided in the domestic installation and in this Miele product must also be assured in their function and operation in isolated operation or in non-mains synchronous operation, or replaced with equivalent measures in the installation.

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