Miele PDR 922-522 HW Heated with Hot Water Installation Guide
- June 15, 2024
- Miele
Table of Contents
PDR 922/522 HW
Heated with hot water
Installation plan Commercial tumble dryers
M.-Nr. 11 969 390
Installation notes
Installation requirements
-
Risk of injury or damage to property due to improper installation. Incorrect installation of the tumble dryer can lead to personal injury or damage to property.
The tumble dryer must only be installed and commissioned by Miele Customer Service Department or an authorised dealer. -
The tumble dryer must be installed in accordance with all relevant regulations and standards.
-
The dryer must only be operated in a room that has sufficient ventilation and which is frost-free.
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The tumble dryer must not be installed behind a closeable door or a sliding door. The maximum opening angle of the tumble dryer door must not be limited by objects or doors. It must be possible to fully open the tumble dryer door at any time.
Electrical connection
The electrical connection must be established by a qualified electrician.
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The electrical connection may only be made to an electrical system provided in accordance with all appropriate local and national legislation, regulations and guidelines. Please also observe the regulations set out by your insurance provider and energy supplier, accident prevention regulations, as well as recognised codes of practice.
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Reliable and safe operation of this tumble dryer is only ensured if it has been connected to the mains electricity supply. The required supply voltage, power rating and fuse rating can be found on the data plate on the tumble dryer. Ensure that the supply voltage matches the voltage quoted on the data plate before establishing the electrical connection to the tumble dryer.
Connection to a supply voltage other than the one quoted on the data plate can damage the tumble dryer if the voltage is too high. -
If more than one voltage is specified on the data plate, the tumble dryer can be converted for connection to the relevant input voltage. This conversion must be performed by the Miele Customer Service Department or by an authorised dealer. During the conversion, the wiring instructions given on the wiring diagram must be followed.
The tumble dryer can either be connected with a suitable plug-andsocket in accordance with IEC 60309-1, or where necessary a hardwired connection. For a hard-wired connection, an all-pole isolation device must be available at the installation site.
An isolation device is a switch which ensures a contact opening of more than 3
mm. These include circuit breakers, fuses and contactors (IEC/EN 60947).
If the mains supply cannot be permanently disconnected, the isolation device
(including plug and socket) must be safeguarded against being switched on
either unintentionally or without authorisation.
Tip: We recommend connecting the tumble dryer to the power supply via a
plug and socket so that it is easier to conduct electrical safety checks (e.g.
during maintenance or repair work).
-
The tumble dryer must not be connected to devices such as timers which would switch it off automatically.
If local regulations require that a residual current device (RCD) is installed, a type B residual current device (sensitive to universal current) must be used. -
If local and national installation specifications require equipotential bonding, good galvanic contact must be guaranteed. Equipotential bonding must have an earth current rating > 10 mA.
Hot water connection
An on-site circulation system with feed and return lines is required to supply
the tumble dryer with hot water as an energy source.
For sufficient protection against corrosion, the tumble dryer must only be
operated with heating water in compliance with VDI 2035.
A detailed pipework calculation and hydraulic alignment of the overall system
are recommended to ensure adequate heat supply at the appliance. This applies
in particular when connecting multiple appliances to the same heating circuit.
An external circulation pump needs to be installed in the heating circuit on
site to ensure sufficient supply of hot water. The circulation pump must be
selected based on the technical specifications of the tumble dryer and those
of the on-site pipework.
Flexible hose connections that are resistant to pressure and temperature are
recommended for the connection of the hot water supply.
The cross-section of the free internal diameter of the connection hoses must
be at least 18 mm so that the flow rate throughout the heating circuit can be
maintained at a sufficient level. If it is not, the programme running time of
the drying process is likely to be affected. A suitable control valve must be
fitted in the feed line to control the incoming flow of hot water. This valve
is controlled directly via the tumble dryer controls. The control valve must
be fitted in the direct vicinity of the appliance connection.
An installation kit to assist with connecting the hot water supply to the
tumble dryer is available to purchase as an optional Miele accessory.
We recommend that shut-off valves are fitted on site at the feed line and
return line connection points. Depending on cable routing requirements, the
customer might need to provide additional ventilation at the connection point
on site.
Air intake/exhaust air
The tumble dryer may only be operated when the ducting has been connected
properly and the room is sufficiently ventilated.
Accessory parts may only be fitted when expressly approved by Miele. If other
parts are used, warranty, performance and product liability claims will be
invalidated.
Dimensions
Dimensions quoted in millimetres
EL Electrical connection
HWA Hot water valve connection
HWV Hot water valve
VL Hot water feed
RL Hot water return
AL Exhaust duct
ZL Air intake
PA Connection for equipotential bonding (optional)
XCI XCI Box/Connector Box (optional)
Installation (standard/on concrete plinth)
Dimensions quoted in millimetres
B Drill hole/anchor point
BS Concrete plinth
Installation (offshore) Dimensions quoted in millimetres
B Drill hole/anchor point
Technical data
Voltage variants and electrical data
| Standard connection
---|---
Supply voltage| 1N AC 230 V
Frequency| 50/60 Hz
Power rating| 1.0 kW
Fuse rating (on site)| 10 A
Minimum cross-section for connection cable| 3×1.5 mm²
Cable gland| M20
Exhaust air
| Maximum nominal volume flow rate in extraction mode (PDR 9xx only) | 1025 m³/h |
|---|---|
| Maximum nominal volume flow rate (PDR 5xx only) | 790 m³/h |
| Maximum permitted pressure loss | 310 Pa |
| Connector on machine side (external diameter) | 150 mm |
| Connection pipe provided on site (internal diameter) | 150 mm |
| Maximum exhaust air temperature | 80 °C |
As relative humidity inside the exhaust ducting can be as high as 100 %,
suitable measures must be taken to prevent a backflow of condensate into the
machine.
Hot water feed
| Rated load | 6.8 kW |
|---|---|
| Media temperature operating range | 70–90 °C |
| Flow rate operating range | 0.3–1.5 m³/h |
| Temperature difference feed/return | < 15 K |
| Maximum operating pressure | 1000 kPa |
| Resistance value at nominal rating (flow rate 1 m³/h) | 1 kPa |
| Threaded union (external thread) | ½” |
Hot water return
| Threaded union (external thread) | ½” |
|---|
Hot water valve connection
| Supply voltage | 1N AC 230 V |
|---|---|
| Frequency | 50 Hz |
| Maximum permitted connection load | 0.5 A |
| Length of connection cable for control valve | 500 mm |
Hot water valve
| Minimum media temperature | 100 °C |
|---|---|
| Pressure range | 0–10 bar |
Minimum differential pressure at the control valve (pressureless for
circulation system)| 0 bar
Minimum flow factor (kv value)| 6.0 m³/h
Air intake
Standard connection: air intake from installation site|
---|---
Recommended free air intake cross-section into the room:
(equivalent to 3 times the exhaust air cross-section of a machine).| 531 cm²
There must be sufficient air intake to the installation site to match the air
outlet volume.|
Alternative connection: air intake connection directly from outdoors|
Connection sleeve on machine side (internal diameter)| 161 mm
Connection pipe provided on site (external diameter)| 160 mm
Removing the protective cover exposes live parts. For safety reasons, a pipe
must be installed from the tumble dryer’s central fresh air intake (over a
minimum length of 900 mm) and secured with 2 screws.
Equipotential bonding (optional)
| Connection with male thread | 10×35 mm |
|---|---|
| Washers and nuts | M10 |
Accessories for equipotential bonding are not supplied and need to be ordered separately.
Machine data
| Machine width, total | 906 mm |
|---|---|
| Machine height, total | 1400 mm |
| Machine depth, total | 1162 mm |
| Niche width | 1250 mm |
| Recommended wall spacing (up to the front edge of the machine) | 1600 mm |
| Minimum wall spacing (up to the back edge of the lid) | 500 mm |
| Packaging width | 1090 mm |
| Packaging height | 1526 mm |
| Packaging depth | 1254 mm |
| Maximum gross volume | 2085.9 l |
| Maximum gross weight | 246.4 kg |
| Maximum net weight | 231.9 kg |
| Max. floor load in operation | 2599 N |
| Diameter of exhaust duct | 150 mm |
| Drum diameter | 850 mm |
| Diameter of drum opening | 520 mm |
| Drum depth | 742 mm |
| Drum volume | 400 l |
| Diameter of door opening | 520 mm |
| Maximum door opening angle | 180° |
| Emission sound pressure level | 62 dB(A) re 20 µPa |
| Sound power level | 70 |
| Average heat dissipation rate into the room | 4.7 MJ/h |
| Permissible ambient temperature range | 2–40 °C |
Fixing options
Fixing without plinth
| Quantity| Screw size
---|---|---
Tensioning strips| 2|
Wood screws DIN 571 (Ø × length)| 2| 6×40 mm
Plugs (Ø × length)| 2| 10×50 mm
If the tumble dryer is being installed without a plinth, fixing it in place is
recommended.
Fastenings for floating screed must be supplied by the customer on site.
Fixing to concrete plinth
| Quantity| Screw size
---|---|---
Tensioning strips| 2|
Wood screws DIN 571 (Ø × length)| 2| 6×40 mm
Plugs (Ø × length)| 2| 10×50 mm
If the tumble dryer is being fixed to a concrete plinth on site, fixing in
place is absolutely essential.
Fastenings for floating screed must be supplied by the customer on site.
Options/Accessories
Concrete base (on site)
| Minimum width | 900 mm |
|---|---|
| Recommended height | 100 mm |
| Minimum height | 50 mm |
| Minimum depth | 1200 mm |
The quality of the concrete and its strength must be assessed according to the machine load. The on-site concrete plinth must be fixed adequately to the floor.
**Miele & Cie. KG
Carl-Miele-Straße 29
33332 Gütersloh
Germany
Telefon: 05241 89-0
Internet: www.miele.com/professional
Alteration rights reserved/45.21
M.-Nr. 11 969 390 / 01**
Documents / Resources
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Miele PDR 922-522 HW Heated with Hot
Water
[pdf] Installation Guide
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