DeDietrich BPB 150 Troubleshooting guide

MW-L000570-03
en
Installation, User and Service Manual
Independent domestic hot water tanks
BPB 150...501

Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.3 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.2 Symbols used on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.2 2014/68/UE Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.1.3 Ecodesign Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.2.1 Specifications of the domestic hot water tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.2 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Installation regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2.1 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2.2 Position of the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2.3 Main dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1 Positioning the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2 Levelling the domestic hot water tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6.3 Putting the domestic hot water sensor in place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4 Hydraulic installation diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4.1 Example with a wall-hung boiler or a heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4.2 Example with a floor-standing boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.4.3 Safety unit (except France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.4.4 Safety unit (only for France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.5 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.5.1 Hydraulic connection of the primary circuit (exchanger circuit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.5.2 Connecting the tank to the domestic water circuit (secondary circuit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
7 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 Protection against Legionella (500 litres only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2 Commissioning the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.3 Domestic water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.2 Safety valve or safety unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
8.3 Cleaning the casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.4 Checking the magnesium anode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.5 Removing limescale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.6 Removing and reinstalling the inspection hatches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.6.1 Remove the inspection hatches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.6.2 Putting the inspection hatches back in place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.7 Maintenance form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9 Disposal and Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
10 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Contents
2 BPB 150...501 300027336 - v06 - 13062019

10.2 Domestic hot water tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.2 Terms of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
12.1 Product fiche - Hot water storage tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Contents
300027336 - v06 - 13062019 BPB 150...501 3

1 Safety
1.1 General safety instructions
Danger
This appliance can be used by children aged from
8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of
experience and knowledge if they have been
given supervision or instruction concerning use of
the appliance in a safe way and understand the
hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance
should not be carried out by children without adult
supervision.
Warning
In order to limit the risk of being scalded, a
thermostatic mixing valve must be installed on
the domestic hot water flow pipes.
The thermostatic mixing valve must be set to
maximum at 60 °C.
1.2 Recommendations
Warning
Do not neglect to service the appliance.
Service the appliance regularly to ensure that it
operates correctly.
Warning
Only qualified persons are authorised to
assemble, install and maintain the installation.
Caution
Heating water and domestic water must not come
into contact with each other. Domestic water must
not circulate through the exchanger.
To benefit from extended warranty cover, no
modifications should be made to the appliance.
Insulate the pipes to keep heat losses to a minimum.
Only remove the covers for maintenance and
breakdown repair operations and put the covers back in
place once these operations are complete.
Warning stickers
1 Safety
4 BPB 150...501 300027336 - v06 - 13062019

The instructions and warnings affixed to the appliance
must never be removed or covered and must remain
legible during the entire lifespan of the appliance.
Immediately replace damaged or illegible instructions
and warning stickers.
1.3 Liabilities
1.3.1 Manufacturer's liability
Our products are manufactured in compliance with the
requirements of the various Directives applicable. They
are therefore delivered with the marking and any
documents necessary. In the interests of the quality of
our products, we strive constantly to improve them. We
therefore reserve the right to modify the specifications
given in this document.
Our liability as manufacturer may not be invoked in the
following cases:
Failure to abide by the instructions on installing and
maintaining the appliance.
Failure to abide by the instructions on using the
appliance.
Faulty or insufficient maintenance of the appliance.
1.3.2 Installer's liability
The installer is responsible for the installation and initial
commissioning of the appliance. The installer must
observe the following instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
Install the appliance in compliance with prevailing
legislation and standards.
Carry out initial commissioning and any checks
necessary.
Explain the installation to the user.
If maintenance is necessary, warn the user of the
obligation to check the appliance and keep it in good
working order.
Give all the instruction manuals to the user.
1.3.3 User's liability
To guarantee optimum operation of the system, you
must abide by the following instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
1 Safety
300027336 - v06 - 13062019 BPB 150...501 5

Call on a qualified professional to carry out installation
and initial commissioning.
Get your installer to explain your installation to you.
Have the required inspections and maintenance
carried out by a qualified installer.
Keep the instruction manuals in good condition close
to the appliance.
1 Safety
6 BPB 150...501 300027336 - v06 - 13062019

2 Symbols used
2.1 Symbols used in the manual
This manual uses various danger levels to draw attention to special
instructions. We do this to improve user safety, to prevent problems and to
guarantee correct operation of the appliance.
Danger
Risk of dangerous situations that may result in serious personal
injury.
Danger of electric shock
Risk of electric shock.
Warning
Risk of dangerous situations that may result in minor personal
injury.
Caution
Risk of material damage.
Important
Please note: important information.
See
Reference to other manuals or pages in this manual.
2.2 Symbols used on the equipment
1Before installing and commissioning the appliance, carefully read
the instruction manuals provided
2Dispose of used products in an appropriate recovery and recycling
structure
Fig.1
12MW-6000691-1
2 Symbols used
300027336 - v06 - 13062019 BPB 150...501 7

3 Technical specifications
3.1 Homologations
3.1.1 Certifications
This product complies with the requirements of the following European
Directives and Standards:
Low Voltage Directive 2014/35/EU
Generic standard: EN 60335-1
Relevant standards: EN 60335-2-40, EN 60335-2-21
Electromagnetic Compatibility Directive 2014/30/EU
Generic standards: EN 61000-6-3, EN 61000-6-1
Relevant Standard: EN 55014
3.1.2 2014/68/UE Directive
This product conforms to the requirements of European Directive
2014/68/UE, article 4, paragraph 3, on pressure equipment.
3.1.3 Ecodesign Directive
This product conforms to the requirements of European Directive
2009/125/EC on the ecodesign of energy-related products.
3.2 Technical data
3.2.1 Specifications of the domestic hot water tank
Tab.1
Unit BPB 150 BPB 200 BPB 300 BPB 401 BPB 501
Primary circuit: (Ex
changer)
Maximum operating tem
perature
°C 110 110 110 110 110
Maximum operating
pressure
MPa (bar) 1 (10) 1 (10) 1 (10) 1 (10) 1 (10)
Exchanger capacity litres 5.6 8.1 11.4 14.8 20.8
Exchange surface m20.84 1.20 1.70 2.20 3.10
Water resistance at 3
m3/h
kPa 12 14 17 20 26
Secondary circuit (do
mestic water)
Maximum operating tem
perature
°C 95 95 95 95 95
Maximum operating
pressure
MPa (bar) 1 (10) 1 (10) 1 (10) 1 (10) 1 (10)
Water capacity litres 145 195 290 385 485
Weight
Shipping weight (gross) kg 68 90 119 149,5 184,5
Weight of the domestic
hot water tank (net)
kg 51,5 78 106,5 137 172
Performances related to
the boiler type
Output exchange (1) kW 29 39 54 68 86
3 Technical specifications
8 BPB 150...501 300027336 - v06 - 13062019

Unit BPB 150 BPB 200 BPB 300 BPB 401 BPB 501
Hourly flow rate (Domes
tic hot water, ∆T = 35
°C)(1)
litres/h 710 960 1330 1670 2110
Draw-off capacity (∆T =
30°C) (10 minutes)
(2)
Litres/10
min
250 340 520 670 800
Standby heat loss
(ΔT=45K)
kWh/24 h 1,10 1.30 1,60 1,68 1,97
Performance NL 2.5 4.7 11 16 20
(1) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 45 °C - Primary flow rate: 3 m3/h
(2) Primary temperature: 80 °C - Domestic cold water inlet: 10 °C - Domestic hot water outlet: 40 °C - Domestic hot water tank: 60 °C
Technical data - Hot water storage tank
Tab.2 Technical parameters for hot water storage tank
Product name BPB 150 BPB 200 BPB 300 BPB 401 BPB 501
Storage volume V l 145 195 290 385 485
Standing loss S W 46 54 67 70 82
3 Technical specifications
300027336 - v06 - 13062019 BPB 150...501 9

4 Description of the product
4.1 General description
BPB 150...501 are high performance independent domestic hot water
tanks.
BPB 150...501 domestic hot water tanks can be connected to central
heating boilers used for heating domestic hot water.
Main components:
The tanks are made of high-quality steel lined with food-quality standard
enamel vitrified at 850 °C, which protects the tank from corrosion.
The heat exchanger welded into the tank is made of smooth tubing; its
external surface, which is in contact with domestic water, is enamelled.
The appliance is insulated with polyurethane foam, which helps to
reduce heat losses.
To facilitate material recycling, the insulation can be easily removed
from the vessel.
The external casing is made of ABS.
The tanks are protected against corrosion by one or more magnesium
anodes.
4.2 Standard delivery
The delivery includes:
One domestic hot water tank.
One installation, user and service manual.
4 Description of the product
10 BPB 150...501 300027336 - v06 - 13062019

5 Before installation
5.1 Installation regulations
Important
Only qualified professionals are permitted to install the domestic
hot water tank, in accordance with prevailing local and national
regulations.
Danger
Limit temperature at draw-off points: the maximum domestic hot
water temperature at the draw-off points is the subject of special
regulations that vary from country to country in order to protect
consumers. These special regulations must be observed when
installing the appliance.
France:
Caution
The system must satisfy each point in the rules that govern works
and interventions in individual homes, blocks of flats or other
buildings.
5.2 Choice of the location
5.2.1 Data plate
The data plate affixed to the tank provides important information regarding
the appliance: serial number, model, etc. It must be accessible at all times.
5.2.2 Position of the appliance
Caution
Install the appliance in a frost-free location.
1. Position the appliance as close as possible to the draw-off points in
order to minimise energy losses through the pipes.
2. Place the appliance on a base frame to facilitate cleaning of the area.
3. Install the appliance on a solid, stable structure able to bear its weight.
Fig.2
MW-1001087-1
5 Before installation
300027336 - v06 - 13062019 BPB 150...501 11

5.2.3 Main dimensions
Key to the diagrams
Tab.3
1Domestic hot water outlet G1"
2Circulation G¾"
3Exchanger inlet G1"
4Exchanger outlet G1"
5Domestic cold water inlet and drain opening G1"
6Anode
7Sensor tube for DHW sensor
Important
G: Cylindrical threading, sealed by sheet gasket
Tab.4
BPB 150 BPB 200 BPB 300 BPB 401 BPB 501
A70 70 70 66 71
B282 282 282 282 283
C612 747 972 972 1152
D692 910 1262 1220 1348
E844 1114 1634 1509 1618
F (Ø) 655 655 655 755 805
G964 1234 1754 1642 1760
BPB 150
Fig.3
L000558-B
1
3
2
7
4
5
6
A
B
C
D
E
G
Ø F
5 Before installation
12 BPB 150...501 300027336 - v06 - 13062019

BPB 200 – BPB 300 – BPB 401 – BPB 501
Fig.4
L000559-B
G
Ø F
A
B
C
D
E
1
2
3
7
4
5
6
6
5 Before installation
300027336 - v06 - 13062019 BPB 150...501 13

6 Installation
6.1 Positioning the appliance
Caution
Have 2 people available.
Handle the appliance with gloves.
Caution
Leave 500 mm of clearance around the anodes to facilitate
access.
1. Remove the packaging from the tank but leave the tank on the
shipping pallet.
2. Remove the protective packaging.
3. Remove the three screws securing the tank to the pallet.
4. Lift the tank and place it in its final position, respecting the distances
shown on the diagram.
6.2 Levelling the domestic hot water tank
The domestic hot water tank is levelled using the three feet (supplied in
the bag) to be screwed to the bottom of the domestic hot water tank.
1. Screw the three adjustable feet to the bottom of the domestic hot
water tank.
2. Level the appliance using the adjustable feet.
Adjustment range: 10 mm.
Use metal blocks under the feet of the tank if necessary.
Caution
Do not place the blocks on the exterior sides of the domestic hot
water tank.
6.3 Putting the domestic hot water sensor in place
1. Position the probe in the sensor tube, using the sensor tube
separator.
Important
The sensor tube separator is provided in the documentation bag.
2. Check that the probes are correctly positioned in the sensor tube.
3. Check the mounting of the sensor tube separator.
Fig.5
200
350
200
200
MW-L000565-2
Fig.6
L000382-A
1
2
Fig.7
MW-C003702-2
1
3
2
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6.4 Hydraulic installation diagram
6.4.1 Example with a wall-hung boiler or a heat pump
Fig.8
68
9
9
27
27
32
33
25
56
MW-L000369-C
24
30
50 50Hz
230V
46
16
64
67
B
A
11
21
27
9
1
4
2
3
ABoiler, heat pump
BRegulator
1Heating flow
2Heating return
33-bar safety valve
4Pressure gauge
7Automatic air vent
9Isolation valve
10 Three-way mixing valve
11 Heating pump
16 Expansion vessel
17 Drain valve
18 Filling the heating circuit
21 Outdoor temperature sensor
23 Flow temperature sensor after mixer valve
24 Domestic hot water tank exchanger primary inlet
25 Domestic hot water tank exchanger primary outlet
26 DHW booster pump
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
32 Domestic hot water circulation loop pump
33 Domestic hot water temperature sensor
44 Thermostat limiting the temperature to 65°C with
manual reset for underfloor heating
46 3-way directional valve with reversal motor
50 Disconnector
52 Differential valve
54 End of the discharge pipe free and visible 2 to 4 cm
above the flow funnel
56 Circulation
57 Domestic hot water outlet
64 Direct heating circuit (example: radiators)
65 Heating circuit which may be at low temperature
(heated floor or radiators)
67 Manual radiator valve
68 Condensates neutralisation system
109 Domestic hot water thermostatic mixing valve
201 DHW expansion vessel
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6.4.2 Example with a floor-standing boiler
Fig.9
50
189
9
9
9
9
27
27
32
16
33
25
26
56
57
21
50Hz
230V
7
2
3
4
1
7
17
65
9
9
52
11
10
27
23
44
MW-L000368-C
424
30 9
A
ABoiler
1Heating flow
2Heating return
33-bar safety valve
4Pressure gauge
7Automatic air vent
9Isolation valve
10 Three-way mixing valve
11 Heating pump
16 Expansion vessel
17 Drain valve
18 Filling the heating circuit
21 Outdoor temperature sensor
23 Flow temperature sensor after mixer valve
24 Domestic hot water tank exchanger primary inlet
25 Domestic hot water tank exchanger primary outlet
26 DHW booster pump
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
32 Domestic hot water circulation loop pump
33 Domestic hot water temperature sensor
44 Thermostat limiting the temperature to 65°C with
manual reset for underfloor heating
46 3-way directional valve with reversal motor
50 Disconnector
52 Differential valve
54 End of the discharge pipe free and visible 2 to 4 cm
above the flow funnel
56 Circulation
57 Domestic hot water outlet
64 Direct heating circuit (example: radiators)
65 Heating circuit which may be at low temperature
(heated floor or radiators)
67 Manual radiator valve
68 Condensates neutralisation system
109 Domestic hot water thermostatic mixing valve
201 DHW expansion vessel
6.4.3 Safety unit (except France)
9Isolation valve
17 Drain valve
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
55 Safety valve 0.7 MPa (7 bar)
Fig.10
L000370-C
(54)
2 cm
99
55
29
17
27
30
28
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6.4.4 Safety unit (only for France)
9Isolation valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
aCold water inlet with an integrated non-return valve
bConnection at the cold water inlet of the DHW tank
cStop cock
dSafety valve 0.7 MPa (7 bar)
eDrain opening
6.5 Hydraulic connections
6.5.1 Hydraulic connection of the primary circuit (exchanger
circuit)
For the hydraulic connections of 200 L to 500 L tanks to the boiler (on the
left- or right-hand side), use the hydraulic connection kits provided as
optional extras.
For connection using these kits, refer to the instructions delivered with
them.
For more information, see
Hydraulic installation diagram, page 15
6.5.2 Connecting the tank to the domestic water circuit
(secondary circuit)
During connection, it is imperative that the standards and corresponding
local directives be respected. Insulate the pipes to keep heat losses to a
minimum.
Belgium: Make the connections in accordance with Belgaqua technical
instructions.
Specific precautions
Before making the connection, flush the drinking water inlet pipes in order
not to allow metal or other particles into the appliance's tank.
Provision for Switzerland
Make the connections according to the requirements of the Société Suisse
de l'Industrie du Gaz et des Eaux Comply with local requirements from
water distribution plants.
Safety valve
Caution
In accordance with safety rules, a safety valve calibrated to 7 bar
(0.7 MPa) is mounted on the domestic hot water tank's domestic
cold water inlet.
France: We recommend NF-marked hydraulic diaphragm safety units.
Integrate the safety valve in the cold water circuit.
Install the safety valve close to the DHW tank in a place with easy
access.
Sizing
The diameter of the safety unit and its connection to the tank must be at
least equal to the diameter of the domestic cold water inlet on the tank.
Fig.11
MW-C000711-F
a
b
c
d
(54)
2 cm
e
289
30
29
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There must be no cut-off devices between the safety valve or unit and
the domestic hot water tank.
The discharge pipe in the safety valve or unit must not be blocked.
To avoid obstructing the flow of water in the event of overpressure:
Isolation valves
Hydraulically isolate the primary and domestic circuits with isolation valves
to facilitate maintenance on the domestic hot water tank. The valves make
it possible to carry out maintenance on the domestic hot water tank and its
components without draining the entire installation.
These valves are also used to isolate the domestic hot water tank when
conducting a pressurised check on the tightness of the installation if the
test pressure is greater than the admissible operating pressure for the
domestic hot water tank.
Connecting the domestic cold water
Connect to the cold water supply according to the hydraulic installation
diagram.
The components used for the connection to the cold water supply must
comply with the prevailing standards and regulations in the country
concerned.
Install a water drain in the boiler room and a funnel-siphon for the safety
unit.
Fit a non-return valve to the domestic cold water circuit.
Install a dielectric union on the domestic cold water inlet.
Pressure reducer
If the supply pressure exceeds 80% of the safety valve or unit calibration
(e.g.: 0.55 MPa/5.5 bar for a safety unit calibrated to 0.7 MPa/7 bar), a
pressure reducer must be located upstream of the appliance.
Install the pressure reducer downstream of the water meter in such a way
as to ensure the same pressure in all of the system's pipes.
Domestic hot water circulation loop
To guarantee the availability of hot water as soon as the taps are turned
on, a circulation loop between the draw-off points and the recirculation
pipes in the domestic hot water tank can be installed. A non-return valve
must be included in this loop.
Run the domestic hot water circulation loop via the boiler control system or
an additional timer program to optimise energy consumption.
Measures to take to prevent hot water flow return
Fit a non-return valve to the domestic cold water circuit.
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7 Commissioning
7.1 Protection against Legionella (500 litres only)
Warning
For domestic hot water tanks with a capacity of more than 400
litres: must comply with the Order titled "Protection against
legionella"
France: Order of 30 November 2005
Germany: TrinkwV 2011 - Order of 01 November 2011 on water
quality
Other countries: Observe current regulations
Apply one of the two settings below:
The domestic hot water at the appliance outlet must be at a temperature
of 55 °C or above at all times.
The domestic hot water must be brought up to a minimum temperature
for a minimum duration at least once every 24 hours. See table below:
Tab.5
Minimum temperature maintenance
time (minutes)
Water temperature (°C)
2 70 or above
4 65
60 60
7.2 Commissioning the appliance
Caution
Initial commissioning must be performed by a qualified
professional.
1. Flush the domestic water circuit and fill the tank through the cold
water inlet pipe.
2. Open a hot water tap.
3. Completely fill the domestic hot water tank via the cold water inlet
pipe, leaving the hot water tap open.
4. Close the hot water tap when the water flow is regular, without any
noises in the pipes.
5. Carefully vent all of the domestic hot water pipes by repeating steps 2
to 4 for each hot water tap.
Important
Carefully degas the domestic hot water tank and the distribution
network in order to eliminate noises and hammering caused by
trapped air moving in the pipes during draw-off.
6. Vent the DHW tank exchanger circuit using the air vent provided for
this purpose.
7. Check the safety components (particularly the safety valve or safety
unit), referring to the instructions provided with those components.
Caution
During the heating process, a certain amount of water may
escape via the safety valve or unit because of the expansion of
the water. This phenomenon is perfectly normal and no steps
should be taken to prevent it.
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7.3 Domestic water quality
In regions where the water is very hard (Th > 20 °fH (11 °dH)), we
recommend fitting a softener.
The water hardness must always be between 12 °fH (7 °dH) and 20 °fH
(11 °dH) to be capable of providing effective protection against corrosion.
The softener does not bring about a derogation from our warranty
provided that it is approved and set pursuant to the codes of practice and
the recommendations given in the instructions for the softener and is
regularly inspected and maintained.
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