Smeg WD7015TECO User manual

WD7015TECO
INSTALLATION MANUAL
DOCUMENT FOR THE USE OF AUTHORISED ENGINEERS ONLY
TRANSLATION OF THE ORIGINAL INSTRUCTIONS

WD7015TECO –ECO HEAT EXCHANGER INSTALLATION INSTRUCTIONS
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READ CAREFULLY
This document relates to Smeg “WD7015TECO” products.
With these specific models, some components are supplied disassembled from the product and packaged separately;
they have to be fitted on site by authorised technical staff.
This document provides detailed instructions for installation of the “Eco” Heat Exchanger used on this product and
the checks which follow.
The document is addressed to authorised engineers and must be used jointly with the user manual and the
Installation Requirements document.
Installation, maintenance and any repairs may only be carried out by personnel authorised by
the manufacturer.
Failure to read, any misunderstanding or incorrect interpretation of the instructions provided in this manual may lead
to misuse of the device, put the operator at risk and considerably impair the device’s performance.
The information in this manual is provided for guidance only. The contents and the equipment described may be
subject to change without notice.
195610203.00
01/03/2023
First issue
Code and Rev.
Date
Notes
TABLE OF CONTENTS
1Introduction –WD7015TECO.....................................................................................................................................3
2Dimensions.................................................................................................................................................................3
3Assembly instructions ................................................................................................................................................5
3.1 Full list of components for assembly.................................................................................................................5
3.2 Precautions in preparation for installation .......................................................................................................6
3.3 Unit assembly procedures.................................................................................................................................7
4Inspecting the unit after assembly...........................................................................................................................11
5Manufacturer and after-sales service contact information.....................................................................................11

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1INTRODUCTION –WD7015TECO
In addition to the demineralised water and hot water heaters, Smeg WD7015 models with suffix “TECO” –
e.g. “WD7015TECO” – are fitted with an additional Heat Exchanger, the “Eco Heat Exchanger”.
The Heat Exchanger, mounted on and fixed to the top of the product, allows hot demineralised water from the final
thermal disinfection rinse to be reused to pre-heat the incoming demineralised water.
This component saves both energy and water.
The Heat Exchanger is only installed on models with suffix “TECO” and cannot be fitted on other models.
Devices undergo complete testing in the factory, but the Heat Exchanger is disassembled and packaged separately for
easier transportation.
Technical staff are required to:
1. assemble the Heat Exchanger;
2. make its water and electricity connections;
3. check that it has been assembled correctly, especially with the regard to the tightness of all connections, and
test its operation.
See www.smegtech.com for the product’s up-to-date functional and wiring diagrams, for full information about
WD7015TECO models.
2DIMENSIONS
The overall dimensions of the Heat Exchanger are:
-Width: 870 mm
-Depth: 820 mm
-Height: 225 mm
Weight of the Eco Heat Exchanger, which has to be lifted and placed on top of the device: 35 kg.
Refer to the latest edition of the “Installation Requirements” document for product information and dimensions.

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Fig. 1 –Device overall dimensions.

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3ASSEMBLY INSTRUCTIONS
3.1 FULL LIST OF COMPONENTS FOR ASSEMBLY
Fig. 2 –Blow-up diagram of components for assembly.
ID
COMPONENT DESCRIPTION
QUANTITY
A
Eco Heat Exchanger
1
B
Side casings
2
C
Front and rear casings
2
D
Self-tapping screws
8
E
M5 nuts
4
F
Various hose clamps
-
Fig. 3 –Heat exchanger position at end of assembly procedure.
A
B
B
C
C
D x 8
E x 4

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3.2 PRECAUTIONS IN PREPARATION FOR INSTALLATION
ATTENTION
Before installing the components:
1. Check that the device is not connected to the electricity supply.
2. If its electrical connection has already been made: disconnect the power supply using the
main switch on the switchboard.
3. Turn off the water supply taps if already connected.
4. Turn off any other utility supplies and connections (e.g. steam system if installed).
Check that all precautions necessary for safe operation have been taken, ensuring in particular
that components are not electrically live.
CLEARANCE: A clearance of about 1 m2is required at the front of the device and on both sides to
allow correct operation.
PROTECTIVE EQUIPMENT: Wear gloves as protective equipment to prevent cuts from sharp edges
on metal pieces and casings.
The Eco Heat Exchanger must be placed on top of the device: proceed with all necessary
precautions, using ladders and at least 2 operatives to place the unit in the required position.

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3.3 UNIT ASSEMBLY PROCEDURES
Illustration
Description
Step 1
First remove both the device’s side panels for
access to the hoses for connection to the Eco
Heat Exchanger.
Step 2
Place the Heat Exchanger unit on top of the
device as shown on the left.
The device is prefitted with the hoses for
connection to the Heat Exchanger; fit them on
the outside of the unit, so that:
1. the ends of the hose are accessible for
connection after the Heat Exchanger
is in place.
2. The hoses are not crushed
underneath the unit.
Take special care that the Heat Exchanger’s
connection fittings are facing towards the
unloading side of the device, as shown.
Step 3
Loosely fit the nuts provided on the M5 pins on
the top of the device, to hold the unit in
position.
Unloading side
Loading side

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Illustration
Description
Step 4
The first two water connections to be made are
those to the internal coil of the Heat Exchanger
(marked IN and OUT).
Connect:
1. First, the Heat Exchanger outlet pipe
“OUT” to the “OUT” connection on
the top of the device.
2. Second, connect the coil inlet pipe
“IN”.
3. Secure both of them firmly with the
clamps.
Step 5
Secure the flexible steel pipe to the connection
on the top of the tank (connection marked:
“IN_RWT”).
A 29 mm spanner is required.
A gasket is placed between the fittings to
ensure tightness: check that the gasket is
present and in good condition before
tightening the connection.
Take special care to ensure that the
connection is made properly: the pipe carries
high temperature water from the thermal
disinfection phases.
IN
OUT
UT
IN
OUT
UT
IN_RWT

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Illustration
Description
Step 6
Connect the outlet fitting of the Heat
Exchanger which leads to the washing
chamber: “OUT_SOL_RU” connection.
Secure it with the clamp provided.
[“SOL_RU” is the solenoid valve which allows
the Heat Exchanger to discharge into the
washing chamber.]
Step 7
Connection of the overflow “OVER_RWT”.
Connect the overflow hose in the bottom of the
Heat Exchanger and secure it with the clamp
provided.
Step 8
The bottom of the Heat Exchanger unit
includes a drip tray to catch any leaks from the
connections.
There is a drain fitting underneath the drip
tray, which must be connected to the drain
pipe provided.
“OUT_DRIP_TRAY” connection
Secure the connection with the clamp
provided.
chamber inlet
OUT_SOL_RU
Overflow
OVER_RWT

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Illustration
Description
Step 9
Connect the top vent pipe VENT_RWT
Step 10
The only electromechanical component on the
unit is the level sensor “SLRU_MIN”.
Make the electrical connection to the sensor
using the connectors provided.
Step 11
Securely tighten the unit’s 4 fixing bolts.
Step 12
Fit the external casings and secure them with
the screws provided.

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4INSPECTING THE UNIT AFTER ASSEMBLY
Perform the following checks before putting the device into use:
1. Check that all connections mentioned in the assembly procedure have been firmly tightened.
2. Supply water to the device and check the tightness of the external connections.
3. Turn on the electricity supply to the device.
4. Test the Heat Exchanger to ensure it is operating correctly by running the specific “Service TECO”
program twice.
N.B.: the Heat Exchanger is only filled after a thermal disinfection phase and is emptied during rinse
phases. If the Heat Exchanger is full, its contents are discharged into the chamber during the Rinse
phase. Run the device for at least 2 cycles to check:
oThat the connections are watertight;
oThat the Heat Exchanger operates, fills and empties correctly.
N.B.: if the device does not have the “Service TECO” cycle, perform 2 complete operating cycles. The cycle must include
at least:
-1 thermal disinfection phase;
-1 intermediate rinse phase.
5. The device is ready for the Commissioning procedures as specified by the manufacturer. Follow
specification SR113, contacting the headquarters after-sales service for any further information.
5MANUFACTURER AND AFTER-SALES SERVICE CONTACT INFORMATION
Smeg S.p.A.
Via Leonardo da Vinci, 4
42016 Guastalla –Reggio Emilia –Italy
www.smeg-instruments.com
Italy
•After-Sales Service, Service and Technical Information, contact:
oSingle contact number for Italy +39 0522.160.60.50
oEmail: assistenza[email protected]
•For sales information
oEmail: [e-mail]
International Customers
Please contact your Local Smeg Distributor or write an email to [e-mail]