Nibe VVM 320 User guide

IHB EN 2028-10
231342
INSTALLER MANUAL
Indoor module
NIBE VVM 320 UK 1x230V

Quick guide
Navigation
Ok button (confirm/select)
Back button (back/undo/exit)
Control knob (move/increase/reduce)
A detailed explanation of the button functions can be found on page 39.
How to scroll through menus and make different settings is described on page 41.
Set the indoor climate
2X
MY INSTALLATION
INDOOR CLIMATE HOT WATER
INFO
The mode for setting the indoor temperature is accessed by pressing the OK button twice, when in the start
mode in the main menu.
Increase hot water volume
2X
1X INDOOR CLIMATE HOT WATER
MY INSTALLATION INFO
To temporarily increase the amount of hot water, first turn the control knob to mark menu 2 (water droplet)
and then press the OK button twice.

41 Important information
4Safety information
4Symbols
4Marking
5Serial number
5Recovery
5Country specific information
6Inspection of the installation
7Outdoor modules
82 Delivery and handling
8Transport
8Assembly
9Supplied components
10Removing the covers
123 Indoor module's design
13Component location, rear
13List of components
144 Pipe connections
14General pipe connections
18Dimensions and pipe connections
19Connecting air/water heat pump
19Connection during use without heat pump
19Heating medium side
19Cold and hot water
19Installation alternative
215 Electrical connections
21General
24Connections
27Settings
28Optional connections
31Connecting accessories
336 Commissioning and adjusting
33Preparations
33Filling and venting
34Start-up and inspection
36Setting the cooling/heating curve
37Setting hot water circulation
37Pool
38SG Ready
397 Control - Introduction
39Display unit
40Menu system
438 Control – Menus
43Menu 1 - INDOOR CLIMATE
44Menu 2 - HOT WATER
44Menu 3 - INFO
45Menu 4 - MY SYSTEM
46Menu 5 - SERVICE
569 Service
56Service actions
6010 Disturbances in comfort
60Info-menu
60Manage alarm
60Troubleshooting
62Electrical addition only
6311 Accessories
6512 Technical data
65Dimensions and setting-out coordinates
66Technical specifications
68Electrical circuit diagram
73Item register
79Contact information
3Table of ContentsNIBE VVM 320
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.
Rights to make any design or technical
modifications are reserved.
©NIBE 2020.
MinMaxSystem pres-
sure
0.05 MPa
(0.5 bar)
0.3 MPa
(3 bar)
Heating medium
0.01 MPa
(0.1 bar)
0.6 MPa
(6 bar)
Domestic water
Water may drip from the safety valve. A
factory-fitted overflow pipe goes from the
safety valve to an overflow cup. The overflow
pipe is visible, its mouth is open and is not
located close to electrical components. An
overflow pipe should be routed from the
overflow cup to a suitable drain. The entire
length of this overflow pipe is inclined to
prevent water pockets, and it must also be
frost-proof.
VVM 320 must be installed via an isolator
switch. The cable area has to be dimensioned
based on the fuse rating used.
Symbols
NOTE
This symbol indicates danger to person or ma-
chine .
Caution
This symbol indicates important information
about what you should consider when installing
or servicing the installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
The CE mark is obligatory for most products sold
in the EU, regardless of where they are made.
CE
Classification of enclosure of electro-technical
equipment.
IP21
Danger to person or machine.
!
Read the User Manual.
NIBE VVM 320Chapter 1 | Important information4
1 Important information

Serial number
The serial number can be found at the bottom right of
the front cover, in the info menu (menu 3.1) and on the
type plate (PZ1).
Serial number
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.
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.
Benchmark places responsibilities on both manufactur-
ers and installers. The purpose is to ensure that custom-
ers are provided with the correct equipment for their
needs, that it is installed, commissioned and serviced
in accordance with the manufacturers instructions by
competent persons and that it meets the requirements
of the appropriate Building Regulations. The Benchmark
Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the
customer for future reference.
Installers are required to carry out the installation, com-
missioning and servicing work in accordance with the
Benchmark Code of practice which is available from the
Heating and Hotwater Industry Council who manage
and promote the Scheme. Visit centralheating.co.uk for
information.
Warranty and insurance information
Thank you for installing a new NIBE heat pump in your
home.
NIBE heat pumps 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
5Chapter 1 | Important informationNIBE VVM 320

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.
In addition, fill in the page for the installation data in the User Manual.
DateSigna-
ture
NotesDescription
✔
Heating medium, see section "System
diagram"
System flushed
System vented
Expansion vessel
Particle filter
Safety valve
Shut off valves
Boiler pressure
Connected according to outline dia-
gram
Hot water, see section "Cold and hot wa-
ter"
Shut off valves
Mixing valve
Safety valve
Pressure reduction valve
Tundish
Expansion vessel
Electricity, see section "Electrical connec-
tions"
Connected communication
Circuit fuses
Fuses, indoor module
Fuses property
Outside sensor
Room sensor
Current sensor
Safety breaker
Earth circuit-breaker
NIBE VVM 320Chapter 1 | Important information6

DateSigna-
ture
NotesDescription
✔
Setting of emergency mode thermo-
stat
Miscellaneous
Warranty
Benchmark checklist
Docked to
Outdoor modules
COMPATIBLE AIR/WATER HEAT PUMPS
NIBE SPLIT HBS 05
HBS 05-6
Part no. 067 578
AMS 10-6
Part no. 064 205
HBS 05-12
Part no. 067 480
AMS 10-8
Part no. 064 033
HBS 05-12
Part no. 067 480
AMS 10-12
Part no. 064 110
F2040
F2040-8
Part no. 064 109
F2040-6
Part no. 064 206
F2040-12
Part no. 064 092
F2120
F2120-12 1x230V
Part no. 064 136
F2120-8 1x230V
Part no. 064 134
7Chapter 1 | Important informationNIBE VVM 320

Transport
VVM 320 should be transported and stored vertically in
a dry place. However, the VVM 320 may be carefully
laid on its back when being moved into a building.
R
0
R
0
Assembly
• Place VVM 320 on a solid foundation indoors that can
take its weight. Use the product's adjustable feet to
obtain a horizontal and stable set-up.
The space where VVM 320 is located must be frost-
free.
30 - 50 mm
30 - 50 mm
15 - 40 mm
20-55 mm
• Because water can emerge from the safety valve, the
area where VVM 320 is located must be provided with
floor drainage.
INSTALLATION AREA
Leave a free space of 800 mm in front of the product.
All service on VVM 320 can be carried out from the front.
800
10-25
50
50
NOTE
Leave 10 – 25 mm free space between
VVM 320 and the wall behind for routing cables
and pipes.
NIBE VVM 320Chapter 2 | Delivery and handling8
2 Delivery and handling

Supplied components
1 x Room sensor1 x Outdoor temperature
sensor
LEK
2 x Tundish (WM3)
LEK
1 x Valve connector (pres-
sure reduction valve
(QN17), expansion relief
valve (FL1) and non-return
valve (RM1))
LEK
LEK
LEK
1 x Connector with cable
LEK
1 x Armoured hose
(expansion vessel)
LEK
1 x Expansion vessel do-
mestic water (CM4) with
holder
(enclosed separately)
LEK
LEK
LEK
1 x Solenoid valve
LOCATION
The kit of supplied items is placed on top of the product.
9Chapter 2 | Delivery and handlingNIBE VVM 320

Removing the covers
Front cover
1
2
LEK
LEK
LEK
LEK
LEK
1. Remove the screws from the lower edge of the
front panel.
2. Lift the panel out at the bottom edge and up.
Side covers
The side covers can be removed to facilitate the install-
ation.
Caution
50 mm space required to remove the side
panels.
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 VVM 320Chapter 2 | Delivery and handling10

LEK
LEK
LEK
11Chapter 2 | Delivery and handlingNIBE VVM 320

Wilo
VVM320
Wilo
VVM320
PZ3
XL4 XL3 XL9 XL8 XL1 XL2
BT63
GP6
EB1
PZ1
GP1
AA4
AA4-XF4
AA4-XF3
SF1
FL2
QM20
BT30
FQ11
AA1
AA1-S2
FC1
AA2
W130
QM11
BT6
QN10
BT7
BP5
QM22
FQ10
VVM320 front
UA1
PZ1
AA3
NIBE VVM 320Chapter 3 | Indoor module's design12
3 Indoor module's design

Component location,
rear
FL5
XL5
XL29
VVM320 rear side
BT2
BT3
CM1
UB1
UB2
WM1
QQ1
List of components
PIPE CONNECTIONS
Connection, heating medium supply line Ø22 mmXL1
Connection, heating medium return line Ø22 mmXL2
Connection, cold water Ø22 mmXL3
Connection, hot water Ø22 mmXL4
Connection, hot water circulation Ø15 mmXL5
Connection, docking from heat pump Ø22 mmXL8
Connection, docking to heat pump Ø22 mmXL9
Connection, T&P valve Ø15 mmXL29
HVAC COMPONENTS
Expansion vessel, closed, heating mediumCM1
Safety valve, heating medium Ø22 mmFL2
Circulation pumpGP1
Circulation pump, heating mediumGP6
T&P valve Ø15 mmFL5
Filler valve, heating mediumQM11
Venting, climate systemQM20
Venting valve, coilQM22
Reversing valve, climate system/water heating,
flow line
QN10
Submerged tube, temperature limiter, com-
pressor
UA1
TundishWM1
SENSORS ETC.
Manometer, heating systemBP5
Temperature sensors, heating medium flowBT2
Temperature sensors, heating medium returnBT3
Temperature sensor, hot water, chargingBT6
Temperature sensor, hot water, topBT7
Thermostat, standby modeBT30
Temperature sensor, heating medium supply after
immersion heater
BT63
ELECTRICAL COMPONENTS
Immersion heater cardAA1
AA1-S2 Switch (DIP switch) on circuit board
Base cardAA2
Input circuit boardAA3
Display unitAA4
AA4-XF3 USB socket
AA4-XF4 Service socket
Immersion heaterEB1
Miniature circuit-breakerFC1
Temperature limiterFQ10
Temperature limiter, compressorFQ11
SwitchSF1
Network cable for NIBE UplinkTM W130
MISCELLANEOUS
Rating platePZ1
Serial number platePZ3
Cable glandUB1
Cable glandUB2
Inspection hole, vessel, Ø80 mmQQ1
Designations according to standard EN 81346-2.
13Chapter 3 | Indoor module's designNIBE VVM 320

General pipe
connections
Pipe installation must be carried out in accordance with
current norms and directives.
The pipe dimension should not be less than the recom-
mended pipe diameter according to the table. However,
each system must be dimensioned individually to man-
age the recommended system flows.
MINIMUM SYSTEM FLOWS
The installation must be dimensioned at least to manage
the minimum defrosting flow at 100% pump operation,
see table.
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum
flow during
defrosting
(100% pump
speed (l/s)
Air/water
heat pump
22200.27F2120-8
(1x230V)
28250.35F2120-12
(1x230V)
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum
flow during
defrosting
(100% pump
speed (l/s)
Air/water
heat pump
22200.19F2040-6
22200.19F2040-8
22200.29F2040-12
Minimum re-
commended
pipe dimen-
sion (mm)
Minimum re-
commended
pipe dimen-
sion (DN)
Minimum
flow during
defrosting
(100% pump
speed (l/s)
Air/water
heat pump
22200.19HBS 05-6/
AMS 10-6
22200.19HBS 05-12/
AMS 10-8
22200.29HBS 05-12/
AMS 10-12
NOTE
An undersized system can result in damage to
the machine and lead to malfunctions.
VVM 320 together with a compatible air/water heat
pump (See chapter "Outdoor modules") constitutes a
complete installation for heating and hot water.
The system requires the size of the radiator circuit to
be designed for a low temperature heating medium. At
the lowest dimensioned outdoor temperature, the
highest recommended temperatures are 55 °C on the
supply line and 45 °C on the return line, but VVM 320
can handle up to 70 °C on the supply line.
Overflow water from the safety valve goes via an over-
flow cup to a drain so that hot water splashes cannot
cause injury. The entire length of the overflow water
pipe must be inclined to prevent water pockets, and
must also be frost-proof. The mouth of the overflow
water pipe must be visible and not located close to
electrical components.
NIBE recommends installing VVM 320 as close to the
heat pump as possible for optimum comfort. For further
information about the location of different components,
see section "Installation alternatives" in this manual.
Caution
Ensure that incoming water is clean. When
using a private well, it may be necessary to
supplement with an extra water filter.
NIBE VVM 320Chapter 4 | Pipe connections14
4 Pipe connections

NOTE
Any high points in the climate system, must
be equipped with air vents.
NOTE
The pipe systems need to be flushed out be-
fore the indoor module is connected so that
any debris cannot damage component parts.
NOTE
Switch (SF1) must not be moved to "" or " "
until VVM 320 has been filled with water.
Otherwise the temperature limiter, thermostat
and the immersion heater etc can be damaged.
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 the collection tray and from the safety
valves is led by a non-pressurised overflow pipe to the
drain so that hot water cannot cause damage. The
mouth of the overflow pipe must be visible and not
placed close to electrical components. In addition, the
opening of the overflow pipe (tundish), drain valves and
motorised valves should also be positioned away from
all electrical components. This is the only thing the non-
pressurised overflow pipe may be used for. Even over-
flow pipes from tundish connected to the expansion
relief valve must be connected to the drain in the same
way.
Please note that the connection of the T&P-valve should
not be used for any other purpose.
Valves may not be positioned between the expansion
valve and the vessel.
Overflow pipes from tundish must be routed with a fall
of at least 300 mm, before bends or angles in the pipe-
work (see image).
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
15Chapter 4 | Pipe connectionsNIBE VVM 320

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
HARD WATER AREAS
Usually, there should not be a problem in installing
VVM 320 in areas of hard water as the operating tem-
perature is 50–60 °C.
CLEANING THE CLIMATE SYSTEM
When the water heater and the climate system have
been filled with water, VVM 320 must operate at max-
imum normal temperature for at least one hour. There-
after 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.
BOILER AND RADIATOR VOLUMES
H
VVM 320 is equipped with a
pressure expansion vessel of
10 litres.
The pre-pressure of the pres-
sure expansion vessel must
be dimensioned according to
the maximum height (H)
between the vessel and the
highest positioned radiator,
see figure. A pre-pressure of
0.5 bar (5 mvp) means a max-
imum permitted height differ-
ence of 5 m.
The maximum system volume excluding the boiler is
220 litres at the above pre-pressure.
Volume expansion
Approx. 10 l/kW is required for connection to the heat
pump, and many heating systems do not have this
volume. To prevent operational problems, the volume
is then expanded using a UKV buffer vessel.
NIBE VVM 320Chapter 4 | Pipe connections16

SYSTEM DIAGRAM
VVM 320 consists of water heater with charge coil, ex-
pansion vessel, safety valve, filler valve, immersion
heater, circulation pumps, buffer vessel and control
system. VVM 320 is connected to the climate system.
VVM 320 is directly adapted for connection and commu-
nication with a compatible NIBE air/water heat pump,
see section "Outdoor modules", and together they con-
stitute a complete heating installation.
When it is cold outdoors, the air/water heat pump works
with VVM 320, and if the outdoor air temperature falls
below the heat pump’s stop temperature, all heating is
carried out by VVM 320.
Requisite safety equipment connected to F2040-
8/F2040-12/F2120-8/F2120-12/HBS 05 and VVM 320,
see section, docking.
XL 4 3 9 8 21
29
SYMBOL KEY
MeaningSymbol
Shut-off valve
Non-return valve
Mixing valve
Circulation pump
Immersion heater
Expansion vessel
Filterball
Flow meter/energy meter
Shut off valve
Pressure gauge
Control valve
Safety valve
Reversing valve/shunt
Manual reversing valve/shunt
Under floor heating systems
Indoor module
Cooling system
Air/water heat pump
Radiator system
Domestic hot water
Hot water circulation
17Chapter 4 | Pipe connectionsNIBE VVM 320

Dimensions and pipe
connections
70
1775
560
30-50
600
7575 757560 60
610
25
Wilo
VVM320
XL3XL4 XL8XL9 XL1 XL2
QM20
XL29
70
1775
560
30-50
600
7575 757560 60
610
25
PIPE CONNECTIONS
Connection, heating medium supply line Ø22 mmXL1
Connection, heating medium return line Ø22 mmXL2
Connection, cold water Ø22 mmXL3
Connection, hot water Ø22 mmXL4
Connection, hot water circulation Ø15 mm (does
not apply to copper)
XL5
Connection, docking from heat pump Ø22 mmXL8
Connection, docking to heat pump Ø22 mmXL9
Connection, T&P valve Ø15 mmXL29
NIBE VVM 320Chapter 4 | Pipe connections18

Connecting air/water
heat pump
You can find a list of compatible air/water heat pumps
in section "Outdoor modules".
VVM 320 is not equipped with shut off valves; these
must be installed outside the indoor module to facilitate
any future servicing.
EB101-XL1
EB101-XL2
XL8
XL9
Connection during use
without heat pump
Connect the pipe for docking in from the heat pump
(XL8) with the pipe out to the heat pump XL9.
XL8
XL9
Heating medium side
CONNECTING THE CLIMATE SYSTEM
A climate system is a system that regulates indoor
comfort with the help of the control system in VVM 320
and for example radiators, underfloor heating/cooling,
fan convectors etc.
• When connecting to a system with thermostats on all
radiators (or underfloor heating coils), either a bypass
valve must be fitted or some of the thermostats must
be removed to ensure there is sufficient flow.
Before installing VVM 320 in an existing system, it is
important for the system to be properly flushed through.
Even if VVM 320 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.
XL1
XL2
Cold and hot water
The settings for hot water are made in menu 5.1.1.
Stop temperature for hot water must be at least 60°C.
CONNECTING COLD AND HOT WATER
Install as follows:
• shut-off valve
• mixing valve
A mixing valve must be installed when the factory
setting for hot water is changed. National regulations
must be observed.
• enclosed valve connector containing pressure reduc-
tion valve (QN17), expansion relief valve (FL1) and
non-return valve (RM1)
• enclosed expansion vessel (CM4)
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.
• enclosed tundish (WM3)
XL3
XL4XL29
Installation alternative
VVM 320 can be installed in several different ways,
some of which are shown below.
Further option information is available at www.nibe.co.uk
and in the respective assembly instruction for the ac-
cessory used. See page 63 for a list of accessories that
can be used with VVM 320.
19Chapter 4 | Pipe connectionsNIBE VVM 320

EXTRA HOT WATER HEATERS
The system can be supplemented with an extra water
heater, if a large bath tub or other significant consumer
of hot water is installed. A mixer valve is then installed
on the outgoing hot water from the water heater.
Water heater with immersion heater
If it is possible to use a water heater with an immersion
heater, connect it as illustrated below.
EXTRA CLIMATE SYSTEM
In buildings with several climate systems that require
different supply temperatures, the accessory
ECS 40/ECS 41 can be connected.
A shunt valve then lowers the temperature to the under-
floor heating system, for example.
-EP21-RM1
-EP21-GP10-EP21-BT2
-EP21-AA25
-EP21-BT3
-EP21-QN25
-EP21
CONNECTING HOT WATER CIRCULATION
A circulation pump can be controlled by VVM 320 to
circulate the hot water. The circulating water must have
a temperature that prevents bacterial growth and
scalding, and national standards must be satisfied.
The HWC return can be connected to XL5 or a freest-
anding water heater. If an electric water heater is con-
nected after the heat pump, the HWC return must be
connected to the water heater.
The circulation pump is activated via AUX input in menu
5.4.
-QZ1-FQ3
-QZ1-GP11
-QZ1-RM1
-QZ1-RN1
-QZ1
NIBE VVM 320Chapter 4 | Pipe connections20