Miele PDR 918 SI Commercial Tumble Dryer Installation Guide

Miele PDR 918 SI Commercial Tumble Dryer

Product Information

The product is a commercial tumble dryer model PDR 918 SI that is heated with steam. It is designed for commercial use and is equipped with various installation features and options.

Installation Notes
Before installation or use, it is important to read and follow the instructions provided in the user manual to prevent accidents and machine damage.

Optional Accessories
The product may have optional accessories available for installation. Please refer to the user manual or contact customer support for more information.

Supply Air, Exhaust, and Ventilation Cross-Sections
The tumble dryer should only be operated when the ducting has been properly connected and the room is adequately ventilated. The length and diameter of the supply-air or exhaust pipe should be calculated based on the structural conditions on-site. To maximize airflow efficiency, the pipeline should be as short as possible with minimal elbows.

Substitute Duct Lengths

Note: Non-return flap length is 39′ 4 7/16 (12 m) for all  types.

Maximum Permissible Total Ducting Length

Internal Minimum Pipe Diameter (Metal Ducting)| PDR x14 SI| PDR x18 SI| PDR x22 SI| PDR x28 SI| PDR x44 SI
---|---|---|---|---|---
5 7/8 (150 mm)| 62′ 4 1/16 (19 m)| 49′ 2 9/16 (15 m)| 39′ 4 7/16 (12 m)| 32′ 9 11/16 (10 m)| 32′ 9 11/16 (10 m)
7 1/16 (180 mm)| 164′ 1/2 (50 m)| 124′ 8 1/16 (38 m)| 101′ 8 1/2 (31 m)| 88′ 7 (27 m)| 78′ 8 7/8 (24 m)
7 7/8 (200 mm)| 278′ 10 7/16 (85 m)| 213′ 3 1/16 (65 m)| 173′ 10 5/8 (53 m)| 157′ 5 3/4 (48 m)| 130′ (40 m)

Note: The permissible counter pressure in the exhaust ducting  varies depending on the specific model.

Care for Vent Ducting Connection
When connecting the vent ducting through the exhaust duct of a machine, ensure that the connection is secure and airtight. For complex ducting configurations or when multiple machines are connected to a shared duct, it is recommended to consult a qualified specialist for detailed pipework calculation.

Room Ventilation
During tumble dryer operation, the room must be adequately ventilated. The minimum dimension of the ventilation opening depends on the cross-section of the vent duct.

Note: The table provides the minimum dimension for ventilation  opening based on different vent duct diameters.

Product Usage Instructions

1. Before using the tumble dryer, ensure that the ducting is properly connected and the room is adequately ventilated.
2. Calculate the length and diameter of the supply-air or exhaust pipe based on the structural conditions on-site. Keep the pipeline as short as possible and minimize the number of elbows to maximize airflow efficiency.
3. For substitute duct lengths, refer to the table provided in the user manual for the specific model of the tumble dryer.
4. When connecting the vent ducting through the exhaust duct of a machine, ensure a secure and airtight connection.
5. If you have complex ducting configurations or multiple machines connected to a shared duct, consult a qualified specialist for detailed pipework calculation.
6. Adequately ventilate the room during tumble dryer operation. The minimum dimension of the ventilation opening depends on the cross-section of the vent duct.
7. Refer to the table provided in the user manual to determine the minimum dimension for ventilation opening based on the vent duct diameter.

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 prop-erty.
• It is recommended that installation and commissioning be accomplished by Miele Ser-vice or an authorized dealer.

Observe all local codes.

• The tumble dryer must be installed in accordance with all relevant regulations and stan-dards.
• The dryer must only be operated in a room that has sufficient ventilation and which is frost-free.
• 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.

Steam connection
The steam connection must only be carried out by a registered installation technician. The information from the data plate, the wiring diagram, and the documentation accompanying the machine must be noted and complied with when connecting steam-heated Miele ma-chines.

Condensate connection
The condensate separator must be installed such that when the system is not operating, the heater bank is completely emptied. This means that no condensate may remain in the heater bank. The installation of an inverted bucket condensate trap is recommended.

Floor anchoring
Miele generally recommends securing both of the tumble dryer’s front screw feet to the floor with tensioning strips.
In the following cases, the tumble dryer must be secured to the floor with tensioning strips

• when installing on a base
• on an offshore installation

Supply air/exhaust air
The tumble dryer may only be operated when the ducting has been connected properly and the room is sufficiently ventilated.

Optional accessories
Only use genuine Miele spare parts and accessories with this machine. Using parts or accessories from other manufacturers may void the warranty, and Miele cannot accept liability.

Communication box

• The optional communication box allows external hardware from Miele and other suppliers to be connected to the Miele Professional machine. External hardware includes e.g., peak-load systems, pressure sensors, or an external vent flap.
• The communication box is supplied with voltage by the Miele Professional machine.
• The separately available set consists of the communication box and fasteners for installa-tion on the machine or on the wall.

XKM 3200 WL PLT

• The optional Miele communication module can be used to establish a data connection be-tween a Miele Professional machine and a data processor in accordance with the Ethernet or WiFi standard.
• This communication module fits into the communication slot which is a standard feature on all machines. The communication module offers the option of intelligent app-based communication with external systems. In addition, it can display detailed machine and pro-gram status information.
• This module forms the basis for wired communication with Miele MOVE.
• It is not possible to integrate the machine into the “Miele@home” app for domestic in-stallations.
• The communication module is intended exclusively for commercial use and is supplied with voltage directly via the Miele Professional machine. No additional power connection is required. The
• Ethernet interface provided via the communication module complies with SELV (safety extra low voltage) requirements in accordance with EN 60950. Connected external machines must also comply with SELV.

Base

• The tumble dryer can be installed on a base (open or box base, available as an optional Miele accessory).
• Elevating the tumble dryer gives a better ergonomic working position when loading or un-loading.

Risk of injury and damage due to missing fastenings.
When installing on a base, an unsecured tumble dryer can slip and fall off the base. If the tumble dryer is installed on an existing on-site base, it must be secured. The base must be secured to the floor.

Supply air, exhaust, and ventilation cross-sections

Supply air/exhaust air
The tumble dryer may only be operated when the ducting has been connected properly and the room is sufficiently ventilated.

Calculating the total length and diameter of a supply-air or exhaust pipe

• The length of the required ductwork and the number and shape of the elbows are deter-mined by the structural conditions on-site. In order to maximize the airflow efficiency, the pipeline should be as short as possible and contain few or minimal elbows.
• The exhaust ducting must not be made from flammable materials. Otherwise there is a risk of fire.
• Use only non-flammable materials for the exhaust ducting. All local regulations for metallic ducting must be observed. Plastic must not be used for ventilation.
• In upward exhaust ducting systems, a condensate drain must be fitted to the bottom. The condensate must be drained via a water collection tray or a floor drain positioned in an ap-propriate location.
• If air is being directed from multiple appliances into a combined line (exceptional circum-stances), a non-return device (non-return flap) must be installed in each separate line to prevent backflow.
• To make subsequent cleaning of the pipes easier, cleaning flaps should be fitted to elbows wherever possible.
• The on-site exhaust ducting and venting to the outdoors must be regularly checked for lint deposits and cleaned if necessary.

Installation notes

Substitute duct lengths

Table 1

Maximum permissible total ducting length

Internal minimum pipe diameter

(metal ducting)

| PDR x14 SI| PDR x18 SI| PDR x22 SI| PDR x28 SI| PDR x44 SI
---|---|---|---|---|---
5 7/8″ (150 mm)| 62′ 4 1/16″

(19 m)

| 49′ 2 9/16″

(15 m)

| 39′ 4 7/16″

(12 m)

| 32′ 9 11/16″

(10 m)

| 32′ 9 11/16″

(10 m)

7 1/16″ (180 mm)| 164′ 1/2″ (50 m)| 124′ 8 1/16″

(38 m)

| 101′ 8 1/2″

(31 m)

| 88′ 7″ (27 m)| 78′ 8 7/8″

(24 m)

7 7/8″ (200 mm)| 278′ 10 7/16″

(85 m)

| 213′ 3 1/16″

(65 m)

| 173′ 10 5/8″

(53 m)

| 157′ 5 3/4″

(48 m)

| 130′ (40 m)
Permissible counter pressure in the ex- haust ducting| –| 0.03 psi (200 Pa)| 0.04 psi (310 Pa)| 0.07 psi (510 Pa)| 0.06 psi (390 Pa)

Table 2

• When connected to the vent ducting through the exhaust duct of a machine, particular care must be taken to make sure the connection is secure and air-tight.
• With complex ducting with many bends and additional components, or when several dif-ferent machines are connected to a shared duct, it is recommended that a detailed pipework calculation is carried out by a qualified specialist.
• The vent ducting must not be channeled into a chimney or flue already in use for any gas-, coal-, or oil-burning installation. The warm and moist exhaust air is to be conducted out-side or to a suitable venting duct over the shortest path possible. The vent ducting must be laid so that air flow is not hindered. To achieve this, use as few bends as possible along with short pipelines and well-made connections and transitions checked for air-tightness. No filters or grilles may be fitted in the vent ducting.
• The end of the vent ducting leading out into the open should be protected against the elements, e.g., with a downward-facing 90° bend.
  During tumble dryer operation, the room must be adequately ventilated.

Room ventilation opening for air intake from the setup room
The minimum dimension of the ventilation opening depends on the cross-section of the vent duct.

(177 cm²)

| 82 5/16″²

(531 cm²)

| 10 1/4″

(260 mm)

| 9 1/16″

(230 mm)

–| 6″

(150 mm)

| 34 7/8″²

(225 cm²)

| 104 5/8″²

(675 cm²)

| 11 5/8″

(295 mm)

| 10 1/4″

(260 mm)

7 1/16″ (180 mm)| –| 39 3/8″²

(254 cm²)

| 118 1/8″²

(762 cm²)

| 12 3/8″

(315 mm)

| 11″

(280 mm)

–| 7 1/16″

(180 mm)

| 50 1/4″²

(324 cm²)

| 150 11/16″²

(972 cm²)

| 14″

(355 mm)

| 12 3/8″

(315 mm)

7 7/8″ (200 mm)| –| 48 11/16″²

(314 cm²)

| 146″²

(942 cm²)

| 13 3/4″

(350 mm)

| 12 3/16″

(310 mm)

–| 7 7/8″

(200 mm)

| 62″²

(400 cm²)

| 186″² (1,200 cm²)| 15 9/16″

(395 mm)

| 13 3/4″

(350 mm)

8 11/16″ (220 mm)| –| 58 7/8″²

(380 cm²)

| 176 11/16″²

(1,140 cm²)

| 15″

(381 mm)

| 14 13/16″

(377 mm)

–| 8 11/16″

(220 mm)

| 75″²

(484 cm²)

| 225 1/16″²

(1,452 cm²)

| 16 15/16″

(430 mm)

| 15 1/16″

(382 mm)

9 13/16″ (250 mm)| –| 76 1/8″²

(491 cm²)

| 228 5/16″²

(1,473 cm²)

| 17 1/8″

(435 mm)

| 15 3/16″

(385 mm)

–| 9 13/16″

(250 mm)

| 96 7/8″²

(625 cm²)

| 290 5/8″²

(1,875 cm²)

| 19 5/16″

(490 mm)

| 17 1/8″

(435 mm)

11 3/16″ (300 mm)| –| 109 9/16″²

(707 cm²)

| 328 3/4″²

(2,121 cm²)

| 20 1/2″

(520 mm)

| 18 1/8″

(460 mm)

–| 11 3/16″

(300 mm)

| 139 1/2″²

(900 cm²)

| 418 1/2″²

(2,700 cm²)

| 23 1/4″

(590 mm)

| 20 1/2″

(520 mm)

Exhaust connection

Example 1
Configuring vent ducting made from steel piping for the PDR 914/514 tumble dryers

• L1, L2 : each 9′ 10″ (3 m) steel piping
• B1, B2 : each 90° concertina pipe elbow (r = 2d)
• B3 : 90° elbow (r = d)

1. Total duct length
   • Steel pipe L1 = 9′ 10″ (3.0 m)
   • Steel pipe L2 = 9′ 10″ (3.0 m)
   • 90° concertina pipe elbow (r = 2d)
   • B1 = 10′ 6″ (3.2 m)*
   • 90° concertina pipe elbow (r = 2d)
   • B2 = 10′ 6″ (3.2 m)*
   • 90° elbow (r = d) B3 = 6′ 3″ (1.9 m*)
   • Total duct length 46′ 11″ (14.3 m)

• • Substitute duct lengths according to Table 1

Duct diameter depending on total pipe length
For the calculated total pipe length of 46′ 11″ (14.3 m) for a PDR 914/514, a minimum duct diameter of 6″ (150 mm) is specified for the exhaust ducting according to Table 2.

Example 2
Common combined exhaust ducting for multiple appliances should only be considered as a solution in exceptional cases.

Configuring combined exhaust ducting made from steel for the PDR 914/514 and PDR 918/518 series tumble dryers

• L1–L4 each 6′ 6″ (2 m) steel piping
• B1–B3 each 90° concertina pipe elbow (r = 2d)
• B4 45° elbow (r = 2d)
• B5 90° elbow (r = d)

If the exhaust from multiple appliances is to be ducted into a combined line, a non-return device must be installed in each separate line to prevent backflow.

1. Total pipe length PDR 914/514
   • Steel pipe L1 = 6′ 6″ (2.0 m)
   • Steel pipe L2 = 6′ 6″ (2.0 m)
   • Steel pipe L4 = 6′ 6″ (2.0 m)
   • 90° concertina pipe elbow (r = 2d)
   • B1 = 10′ 6″ (3.2 m)*
   • 90° concertina pipe elbow (r = 2d)
   • B2 = 10′ 6″ (3.2 m)*
   • 90° elbow (r = d) B5 = 6′ 3″ (1.9 m*)
   • Total duct length 14.3 m

• • Substitute pipe lengths according to Table 1

Pipe diameter depending on total pipe length Total pipe length = 46′ 11″ (14.3 m)
Maximum permissible total pipe length 62′ 4″ (19 m) = Ø 6″ (150 mm) internal pipe diame-ter (see Table 2)

1. Total pipe length PDR 918/518
   • Steel pipe L3 = 6′ 6″ (2.0 m)
   • Steel pipe L4 = 6′ 6″ (2.0 m)
   • 90° concertina pipe elbow (r = 2d)
   • B3 = 10′ 6″ (3.2 m)*
   • 45° elbow (r = 2d) B4 = 2′ 3″ (0.7 m)*
   • 90° elbow (r = d) B5 = 6′ 2″ (1.9 m)*
   • Total duct length 32′ 1 13/16″ (9.8 m)

• • Substitute pipe lengths according to Table 1

Pipe diameter depending on total pipe length Total pipe length = 32′ 1 13/16″ (9.8 m) (PDR 918/518)
Maximum permissible total pipe length 49′ 2″ (15 m) = Ø 6″ (150 mm) internal pipe diameter (see Table 2)

Total duct diameter

According to Table 3

• Duct diameter PDR 914/514 Ø 6″ (150 mm) = 27 3/8″² (177 cm²)
• Duct diameter PDR 918/518 Ø 6″ (150 mm) = 27 3/8″² (177 cm²)
• Total cross section A = 54 13/16″² (354 cm²)
• Total duct diameter = Ø 8 11/16″ (220 mm)

Example 3
Configuring exhaust ducting and a supply pipe made from steel for the PDR 914/514 series tumble dryer

• L1, L2 : each 6′ 6″ (2.0 m) steel piping
• L3 : 8′ 2″ (2.5 m) steel piping
• B1, B2 : 90° concertina pipe elbow for each
• B3, B4 : 90° elbow (r = d) for each

1. Total duct length
   • Steel pipe L1 = 6′ 6″ (2.0 m)
   • Steel pipe L2 = 6′ 6″ (2.0 m)
   • Steel pipe L3 = 8’2″ (2.5 m)
   • 90° concertina pipe elbow B1 = 10′ 6″ (3.2 m)*
   • 90° concertina pipe elbow B2 = 10′ 6″ (3.2 m)*
   • 90° elbow (r = d) B3 = 6′ 3″ (1.9 m*)
   • 90° elbow (r = d) B4 = 6′ 3″ (1.9 m*)
   • Total duct length 54′ 9 1/2″ (16.7 m)

• • Substitute pipe lengths according to Table 1

Pipe diameter depending on total pipe length
For the calculated total pipe length of 54′ 9″ (16.7 m) for a PDR 914/514, a minimum pipe diameter of 6″ (150 mm) is specified for the exhaust ducting and supply pipe according to Table 2.

Configuring the room ventilation opening
Rooms in which rotary irons and tumble dryers are operated must have an induced ventilation system (e.g., ventilation slots in windows and doors, wall openings with grilles, or opened windows or skylights).

For example 1
A duct diameter of 6″ (150 mm) was specified in example 1. According to this duct diame-ter, a room ventilation opening with a size of 17′ 5″ (531 cm) is required. The edge length is 9 1/16″ (230 mm) (see Table 3).

For example 2
A total duct diameter of 8 11/16″ (220 mm) was specified. According to this duct diameter, a room ventilation opening with a size of 37′ 4″ (1,140 cm) is required. The edge length is 14 13/16″ (377 mm) (see Table 3).

For example 3
Since in this case the tumble dryer is connected to a central air supply, additional ventila-tion openings are not needed.

Dimensions

Screw foot

Installation

1. Electrical connection
2. Connection for equipotential bonding
3. Exhaust duct
4. Condensate connection
5. Steam connection
6. Steam valve connection
7. Connection for communication module
8. Connection for communication box
9. Communication box (optional)
10. For setting up a connection with external systems
11. k Steam valve

Floor anchoring

# Drill hole/anchor point

Possible voltage options

208/240 V 60 Hz 2 Ph

Supply air
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).
There must be sufficient air intake to the installation site to match the air outlet volume.

Steam connection

Condensate connection

Equipotential bonding

Technical data
APDR 002 communication box (optional accessory)

Machine data

Closed base, APDR 004 (optional accessory)

Please have the model and serial number of your machine available when contacting Technical Service.

U.S.A.
Miele, Inc.

National Headquarters

• 9 Independence Way Princeton, NJ 08540
• Phone: 800-991-9380
• www.mieleusa.com/professional
• [email protected]

Technical Service & Support

• Phone: 800-991-9380
• [email protected]

Canada
Importer
Miele Limited

Professional Division

• 161 Four Valley Drive
• Vaughan, ON L4K 4V8
• Phone : 1-888-325-3957
• www.mieleprofessional.ca
• [email protected]
• Miele Professional Technical Service
• Phone : 1-888-325-3957
• [email protected]

Manufacturer: Miele & Cie. KG
Carl-Miele-Straße 29, 33332 Gütersloh, Germany

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