Nibe VPB S User manual

CHB EN 2126-2
531237
USER AND INSTALLER MANUAL
Indirect heated storage
water heater
NIBE VPB S/ VPBS S UK

41 Important information
4Safety information
5General
5Serial number
5Recovery
6Country specific information
7Compatible products
8Inspection of the installation
92 For the User
9Maintenance
113 For the Installer
11Delivery and handling
13The water heater design
15Pipe installation
20Electrical installation
22Commissioning and adjusting
23Service and maintenance
254 Technical data
25Dimensions
26Technical specifications
27Energy labelling
31Contact information
3Table of ContentsNIBE VPB S/ VPBS S
Table of Contents

Safety information
This manual describes installation and service proced-
ures for implementation by specialists.
The manual must be left with the customer.
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 super-
vision 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 shall not be made by children
without supervision.
This is an original manual. It may not be
translated without the approval of NIBE.
Rights to make any design or technical
modifications are reserved.
©NIBE 2021.
Water may drip from the safety valve’s
overflow pipe. The entire length of the over-
flow water pipe must be routed to a suitable
drain and be inclined to prevent water pock-
ets, and must also be frost-proof. The over-
flow pipe must be at least the same size as
the safety valve. The overflow pipe must be
visible and its mouth must be open and not
located close to electrical components.
The safety valves must be actuated regularly
to remove dirt and to check that they are not
blocked.
SYMBOLS
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you need to consider when in-
stalling, servicing or maintaining the installation.
MARKING
Explanation of symbols that may be present on the
product’s label(s).
The CE mark is obligatory for most products
sold in the EU, regardless of where they are
made.
CE
NIBE VPB S/ VPBS SChapter 1 | Important information4
1 Important information

General
VPB S/ VPBS S is designed and manufactured according
to good technical practice1in order to ensure safe usage.
1Pressure Equipment Directive 2014/68/EU Article 4 point 3.
Serial number
The serial number can be found at the bottom right of
the front cover.
UN
Caution
You need the product's (14 digit) serial number
for servicing and support.
Recovery
Leave the disposal of the packaging to the in-
staller who installed the product or to special
waste stations.
Do not dispose of used products with normal
household waste. It must be disposed of at a
special waste station or dealer who provides this type
of service.
Improper disposal of the product by the user results in
administrative penalties in accordance with current le-
gislation.
5Chapter 1 | Important informationNIBE VPB S/ VPBS S

Country specific
information
UNITED KINGDOM
This installation is subject to building regulation approval,
notify the local Authority of intention to install.
Use only manufacturer’s recommended replacement
parts.
For more information see nibe.co.uk.
Warranty and insurance information
Thank you for installing solar energy fromNIBE water
heater in your home.
NIBE water heaters are manufactured in Sweden to the
very highest standard so we are pleased to offer our
customers a comprehensive guarantee.
The product is guaranteed for 24 months for parts and
labour from the date of installation or 33 months from
the date of manufacture, whichever is the shorter.
The NIBE guarantee is based on the unit being installed
and commissioned by a NIBE accredited installer, ser-
viced every year and the Benchmark documents com-
pleted. Where this condition is not met, any chargeable
spare parts or components issued within the applicable
guarantee period still benefit from a 12 month warranty
from the date of issue by the manufacturer.
We recommend the installer completes and returns as
soon as possible, your guarantee registration card or
completes the guarantee form on the NIBE website
www.nibe.co.uk
Please ensure that the installer has fully completed the
Benchmark Checklist in the end of the Installation In-
structions supplied with the product and that you have
signed to say that you have received a full and clear ex-
planation of its operation. The installer is legally required
to complete a commissioning checklist as a means of
complying with the appropriate Building Regulations
(England and Wales).
All installations must be notified to Local Area Building
Control either directly or through a Competent Persons
Scheme. A Building Regulations Compliance Certificate
will then be issued to the customer who should, on re-
ceipt, write the Notification Number on the Benchmark
Checklist.
This product should be serviced regularly to optimise
its safety, efficiency and performance. The service en-
gineer should complete the relevant Service Record on
the Benchmark Checklist after each service.
The Benchmark Checklist may be required in the event
of any warranty work and as supporting documentation
relating to home improvements in the optional docu-
ments section of the Home Information Pack.
NIBE VPB S/ VPBS SChapter 1 | Important information6

Compatible products
VPB S300
• S1155-6,12,16*
• F1126-8,12*
• F1145-6,8,10,12*
• S2125-8,12
• F2120-8,12,16
• F2040-8,12
• F2030-7,9
VPBS S300
• S1155-6,12,16*
• F1145-6,8,10,12*
• S2125-8,12
• F2120-8,12,16
• F2040-8,12
• F2030-7,9
For ground-source heat pumps, the recommendation applies for max.
10°C brine temperature and 53°C in the tank applies.
Caution
VPBS S300 is not available on all markets.
Caution
In installations with an air/water heat pump, a
control module is also necessary.
7Chapter 1 | Important informationNIBE VPB S/ VPBS S

Inspection of the installation
Current regulations require the heating installation to be inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person.
DateSigna-
ture
NotesDescription
✔
Heat pump (page 15)
Shut off valves
Venting valve
Shut off valve
Hot water (page 15)
Shut off valves
Mixing valve
Expansion vessel
T&P valve
Tundish
Cold water (page 15)
Shut off valves
Non-return valve
Safety valve
Tundish
Electricity (page 20)
Connected supply
Sensors
Temperature limiter
Miscellaneous
Benchmark checklist
NIBE VPB S/ VPBS SChapter 1 | Important information8

Maintenance
EXPANSION RELIEF VALVE
You can find the expansion relief valve on the incoming
pipe (cold water) to VPB S/ VPBS S.
The water heater’s expansion relief valve sometimes
releases a little water after hot water usage. This is be-
cause the cold water, which enters the water heater to
replace the hot water, expands when heated, causing
the pressure to rise and the expansion relief valve to
open.
The function of the expansion relief valve must be
checked regularly by a person who is competent for the
task. Perform the checks as follows:
1. Open the valve.
2. Check that water is flowing through it.
3. Close the valve.
NOTE
If this pressurised water heater develops a
fault, e.g. a flow of hot water from the overflow
pipe, turn the heat pump off and contact your
installer.
NOTE
Do not remove or adjust any components that
are part of this pressurised water heater. Con-
tact your installer!
TIP
The expansion relief valve is not delivered with
VPB S/ VPBS S. Contact your installer if you
are unsure how to check it.
EMPTYING
Water heater
Draining is performed through the siphon (using hose)
in the cold water connection (XL3).
Charge coil
Draining is performed through the siphon (using hose)
in the docking connection, return to heat pump (XL9).
Solar coil
Draining is performed through the siphon (using hose)
in the connection, return to solar heating system (XL14).
VPB S300
626
600
30
126 195
478
391
25-50 1475
80
100
560 440
XL3 XL9
VPBS S300
626
600
28
43
205
126
553
478
13
391
25-50 1775
80
560 440
168
80
XL3 XL9 XL14XL4
SERVICE
If servicing is required, contact your installer for suitable
measures.
Caution
You need the product's (14 digit) serial number
for servicing and support.
VPB S/ VPBS S must be serviced once a year by com-
petent and qualified personnel, such as a NIBE a service
engineer or other qualified professional.
9Chapter 2 | For the UserNIBE VPB S/ VPBS S
2 For the User

When replacing components on VPB S/ VPBS S only
replacement parts from NIBE may be used.
NIBE VPB S/ VPBS SChapter 2 | For the User10

Delivery and handling
TRANSPORT
VPB S/ VPBS S should be transported and stored vertic-
ally in a dry place. The VPB S/ VPBS S may, however,
be carefully laid on its back when being moved into a
building.
R
0
+2
0
-2
1
R
0
HMflow 49(50)°C
Hotwater
51°C
+2
0
-2
1
R
0
HMflow
49(50)°C
Hotwater
51°C
R
0
R
0
+2
0
-2
1
R
0
HMflow 49(50)°C
Hotwater
51°C
+2
0
-2
1
R
0
HMflow
49(50)°C
Hotwater
51°C
R
0
ASSEMBLY
The water heater is only designed for upright installation.
The water heater’s installation area should always have
a temperature of at least 10 °C (to prevent the risk of
damage from frost) and equipped with a floor drain.
Position VPB S/ VPBS S on a firm base that can take the
weight, preferably on a concrete floor or foundation.
Use the product's adjustable feet to obtain a horizontal
and stable set-up.
30 - 50 mm
30 - 50 mm
15 - 40 mm
20-55 mm
SUPPLIED COMPONENTS
LEK
1 x tundish (2 for
VPBS S300)
LEK
1 x pressure reduction
valve
LEK
LEK
LEK
1 x solenoid valve(2 for
VPBS S300
LEK
1 x armoured hose (expan-
sion vessel) (2 for
VPBS S300)
LEK
1 x cold water inlet and ex-
pansion relief valve, water
heater
LEK
1 x expansion vessel with
holder
1 x seal
11Chapter 3 | For the InstallerNIBE VPB S/ VPBS S
3 For the Installer

REMOVING THE COVERS
Front cover
UN
1. Disconnect the front cover at the top edge and pull
it straight out.
2. Lift the front cover upwards.
Side panels
UN
UN
UN
1. Remove the screws from the upper and lower
edges.
2. Twist the cover slightly outward.
3. Move the hatch backwards and slightly to the side.
4. Pull the cover to one side.
5. Pull the hatch forwards.
NIBE VPB S/ VPBS SChapter 3 | For the Installer12

The water heater design
VPBS300 VPBSS300
XL5XL9XL3XL4XL8
UL
PZ1
UA2
XL29
FL5
UA1
QM22
UA5
UA4
XL5FQ10XL14XL9XL3XL4XL8XL13
XL29
FL5
UA5
UA4
UA1
QM22
UL
PZ1
UA2
UA3
UA3
FQ10
BT7 BT7
13Chapter 3 | For the InstallerNIBE VPB S/ VPBS S

EXPLANATION
Pipe connections
Cold water connectionXL3
Hot water connectionXL4
Connection, hot water circulation (does not apply to VPBS S300 copper)XL5
Docking connection, supply line (from heat pump1)XL8
Docking connection, return line (to heat pump1)XL9
Solar heat connection, supply line (from solar heating system) (VPBS S300 only)XL13
Solar heat connection, return line (to solar heating system) (VPBS S300 only)XL14
Connection, T&P valveXL29
1or other heat source
HVAC components
T&P valveFL5
Venting, charge coilQM22
Submerged tube for displaying hot water sensor (BT7)UA1
Submerged tube for controlling hot water sensor (BT6)UA2
Submerged tube for control sensor for external heat source (BT54)UA3
Submerged tube for temperature limiterUA4
Submerged tube for temperature limiterUA5
Sensors
Display hot water sensorBT7
Electrical components
Temperature limiterFQ10
Miscellaneous
Rating platePZ1
Adjustable feetUL
Designations according to standard EN 81346-2.
NIBE VPB S/ VPBS SChapter 3 | For the Installer14

Pipe installation
GENERAL
NOTE
Pipe installation must be carried out in accord-
ance with current norms and directives
NOTE
This installation is subject to building regulation
approval, notify the local Authority of intention
to install.
NOTE
Use only manufacturer’s recommended replace-
ment parts.
Waste water from safety valves is led via an unpressur-
ised overflow pipe to the drain, so hot water splashes
cannot cause harm.
The mouth of the overflow pipe must be visible and not
placed close to electrical components. In addition, the
mouth of the overflow pipe (tundish), drain valves and
motorised valves should also be positioned well away
from all electrical components. This is the only permitted
use of unpressurised overflow pipes. Overflow pipes
from tundish (WM1) connected to the expansion relief
valve (FL1) must also be connected to the drain in the
same way.
The connection for the T&P valve (XL29) must not be
used for any other purpose. Valves may not be posi-
tioned between the T&P valve (FL5) and the water
heater.
Overflow pipes from tundish must be routed with a fall
and be at least 300 mm long, before bends or angles in
the pipework (see image) and must also be frost-proof.
Matal discharge pipe
from tundish, with
continous fall.
Min. 300 mm
Tundish
Safety device
(e.g. temperature
relief valve)
Metal discharge pipe
from temperature relief
valve to tundish
Possible
wall
Discharge
below fixed
grating
Fixed
grating
Trapped
gulley
Max 600 mm
NOTE
The expansion vessel accomodates expansion
that results from heating the water inside the
unit. The expansion vessel must be connected
between the expansion valve and the cylinder.
The location of the expansion vessel should
allow access to recharge the pressure as and
when necessary.
Resistance created by
each elbow or bend
Maximum resistance
allowed, expressed as
a lenght of straight
pipe (i.e. no elbows or
bends)
Minimum size of dis-
charge pipe from tun-
dish
Minimum size of dis-
charge pipe
Valve outlet size
0.8 mmup to 9 m22 mm15 mmG1/2
1.0 mmup to 18 m28 mm15 mmG1/2
1.4 mmup to 27 m35 mm15 mmG1/2
1.0 mmup to 9 m28 mm22 mm<G3>/4
1.4 mmup to 18 m35 mm22 mm<G3>/4
1.7 mmup to 27 m42 mm22 mm<G3>/4
1.4 mmup to 9 m35 mm28 mmG1
1.7 mmup to 18 m42 mm28 mmG1
2.3 mmup to 27 m54 mm28 mmG1
Table sizing of copper discharge pipe for common temperature relief valve outlet sizes.
15Chapter 3 | For the InstallerNIBE VPB S/ VPBS S

Hard water areas
Normally, there should not normally be any problem in-
stalling VPB S/ VPBS S in hard water areas, as the oper-
ating temperature is 50–60°C.
Cleaning the climate system
When the water heater and the climate system have
been filled with water, VPB S/ VPBS S must operate at
maximum normal temperature for at least one hour.
Thereafter the system must be drained of water and
refilled.
Before installing the heat pump in an existing system,
it is important that the system is properly flushed
through.
Even if the heat pump is to be installed in a new system,
the heat pump and system should be flushed.
NOTE
Ensure that cleaning agent has been removed
from the entire system before adding inhibitor.
After flushing an inhibitor should be used for long-term
anti-corrosion protection.
NIBE Energy Systems Limited recommends water
treatments (supplied by e.g. Fernox and Sentinel) spe-
cifically designed for heat pumps.
SYSTEM DIAGRAM
VPB S/ VPBS S is a series of water heaters that are
suitable for connection to e.g. a heat pump.
VPB S/ VPBS S consists of a hot water tank with internal
anti-corrosion protection made of copper, stainless steel
or enamel, as well as a charge coil
The charge coil heats the domestic water, resulting in
excellent properties for hot water charging.
VPBS S300 has an additional coil, which is used for an
external heat source, e.g. thermal solar panels or a stove
with a back boiler.
PIPE CONNECTIONS
VPB S300
XL9XL3XL4XL8 XL5
XL29
VPBS S300
430
75
XL13 XL8 XL4 XL3 XL9 XL14
XL5
XL29
Connection
22mmXL3 Cold water Ø
22mmXL4 Hot water Ø
15mmXL5 Hot water circulation Ø
22mmXL8 Docking connection, supply line Ø
22mmXL9 Docking connection, return line Ø
22mmXL13 Solar heat connection, supply Ø
22mmXL14 Solar heat connection, return Ø
15mmXL29 T&P valve Ø
T&P VALVE
Install the pipe for the T&P valve as illustrated below.
NIBE VPB S/ VPBS SChapter 3 | For the Installer16

SYMBOL KEY
MeaningSymbol
Unit box
Shut-off valve
Non-return valve
Mixing valve
Circulation pump
Expansion vessel
Filterball
Shut off valve
Pressure gauge
Safety valve
Temperature sensor
Pressure reduction valve
Manual reversing valve/shunt
Radiator system
Domestic hot water
Addition
Hot water circulation
TO HEAT PUMP
VPB S/ VPBS S can be docked with another heat source,
for example NIBE S1155.
• Install expansion vessel and pressure gauge as illus-
trated.
• Install the safety valve as illustrated. Recommended
opening pressure is 0.25 MPa (2.5 bar). For information
about max opening pressure, see technical specifica-
tions.
Before installing VPB S/ VPBS S in an existing system,
it is important for the system to be properly flushed
through.
Even if VPB S/ VPBS S is to be installed in a new sys-
tem, the heat pump and system should be flushed.
NOTE
Ensure that cleaning agent has been removed
from the entire system before adding inhibitor.
After flushing an inhibitor should be used for long-term
anti-corrosion protection.
NIBE Energy Systems Limited recommends water
treatments (supplied by e.g. Fernox and Sentinel) spe-
cifically designed for heat pumps.
P
XL9
XL8
17Chapter 3 | For the InstallerNIBE VPB S/ VPBS S

CONNECTING COLD AND HOT WATER
The settings for hot water are made in the compatible
product’s menu system.
Stop temperature for hot water must be at least 60°C.
Install as follows:
• controlling hot water sensor (BT6) (placed in the
middle of the water heater)
• shut-off valve
• non-return valve
• expansion relief valve
The expansion relief valve must have a maximum 0.6
MPa (6.0 bar) opening pressure and be installed on
the incoming domestic water line as shown.
• mixing valve
A mixing valve must be installed when the factory
setting for hot water is changed. National regulations
must be observed.
• pressure relief valve
• expansion vessel
The expansion vessel (CM4) accomodates expansion
that results from heating the water inside the unit.
The expansion vessel must be connected between
the expansion releif valve (FL1) and the water heater.
The location of the expansion vessel should allow ac-
cess to recharge the pressure as and when nec-
cessary.
• tundish
XL3
XL4
INSTALLATION ALTERNATIVE
NOTE
This is the outline diagram. Actual installations
must be planned according to applicable
standards.
VPB S/ VPBS S can be installed in several different ways,
some of which are shown here.
Further option information is available at nibe.eu/ODM
and in the respective assembly instructions for the heat
sources used.
To external heat source
VPBS S300 can be docked to an external heat source,
e.g. a stove with a back boiler or a thermal solar install-
ation.
Install as follows:
• sensor for external heat source, tank (BT54)
• solenoid valve (FL7).
• pressure gauge
• expansion vessel
• pressure relief valve
• AXC module
• circulation pump
• sensor, external heat source (BT53)
P
XL14
XL13
NIBE VPB S/ VPBS SChapter 3 | For the Installer18

Connecting hot water circulation (VVC)
VPB S/ VPBS S has a connection that allows hot water
circulation, the HWC return is connected to this (XL5).
Hot water circulation
A circulation pump can be controlled by a ground-source
heat pump or exhaust air heat pump, indoor module or
control module for circulation of the hot water. The cir-
culating water must have a temperature that prevents
bacterial growth and scalding, and national standards
must be met.
-QZ1-FQ3
-QZ1-GP11-QZ1-RM1-QZ1-RN1
-QZ1
XL5
19Chapter 3 | For the InstallerNIBE VPB S/ VPBS S

Electrical installation
GENERAL
Electrical installation and wiring must be carried out in
accordance with national provisions.
NOTE
Electrical installation and any servicing must
be carried out under the supervision of a quali-
fied electrician. Disconnect the current using
the circuit breaker before carrying out any ser-
vicing.
SENSORS
VPB S300 can be supplemented with up to two hot
water sensors, one for display and one for control. The
displaying sensor (BT7) is fitted at the factory and placed
in a submerged tube (UA1), the controlling hot water
sensor is placed in the submerged tube for control
sensor (UA2). In cases where it is only possible to con-
nect one sensor, use the submerged tube for the con-
trolling sensor (UA2).
VPBS S300 can also be supplemented with a sensor for
an external heat source (BT54). This is placed in the
submerged tube for the external heat source (UA3).
Use the sensors provided with the heat pump/control
module. When no heat sensors have been provided
these must be ordered from the manufacturer of the
heat pump/control module.
The figure shows VPBS S300.
UA1
UA2
UA5
UA4
UA3
BT7
NIBE VPB S/ VPBS SChapter 3 | For the Installer20