Nibe VVM 225 User guide

IHB EN 1907-1
431940
INSTALLER MANUAL
Indoor module
NIBE VVM 225

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 41.
How to scroll through menus and make different settings is described on page 42.
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
6Inspection of the installation
7Outdoor modules
82 Delivery and handling
8Transport
8Assembly
9Supplied components
10Removing the covers
113 Indoor module's design
113x400V, Enamel
123x400V, Stainless steel
133x230V, Stainless steel
141x230V, Stainless steel
15Component location, rear
15List of components
164 Pipe connections
16General pipe connections
19Dimensions and pipe connections
20Installation alternative
215 Electrical connections
21General
24Connections
27Settings
29Optional connections
33Connecting accessories
356 Commissioning and adjusting
35Preparations
35Filling and venting
36Start-up and inspection
38Setting the cooling/heating curve
39Setting hot water circulation
40Pool
40SG Ready
417 Control - Introduction
41Display unit
42Menu system
458 Control – Menus
45Menu 1 - INDOOR CLIMATE
46Menu 2 - HOT WATER
46Menu 3 - INFO
47Menu 4 - MY SYSTEM
48Menu 5 - SERVICE
599 Service
59Service actions
6310 Disturbances in comfort
63Info-menu
63Manage alarm
63Troubleshooting
64Electrical addition only
6511 Accessories
6712 Technical data
67Dimensions and setting-out coordinates
68Technical specifications
71Electrical circuit diagram
87Item register
90Contact information
3Table of ContentsNIBE VVM 225
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 2019.
MinMaxSystem pres-
sure
0.05 MPa
(0.5 bar)
0.3 MPa
(3 bar)
Heating medium
0.01 MPa
(0.1 bar)
1.0 MPa
(10 bar)
Domestic water
Water may drip from the safety valve's
overflow pipe, so this pipe must be inclined
along its entire length to prevent water
pockets. It must also be frost-proof. The
overflow pipe must be visible and its outlet
must be open.
VVM 225 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 equip-
ment.
IPX1B
Danger to person or machine.
!
Read the User Manual.
NIBE VVM 225Chapter 1 | Important information4
1 Important information

Serial number
The serial number can be found at the bottom right of
the front cover and in the info menu (menu 3.1).
VVM225
Serial number plate (PZ3 )
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 VVM 225

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.
DateSignatureNotesDescription
✔
Heating medium
System flushed
System vented
Expansion vessel
Particle filter
Safety valve
Shut off valves
Boiler pressure
Connected according to outline diagram
Hot water
Shut off valves
Mixing valve
Safety valve
Electricity
Connected communication
Circuit fuses
Fuses, indoor module
Fuses property
Outside sensor
Room sensor
Current sensor
Safety breaker
Earth circuit-breaker
Setting of emergency mode thermostat
Miscellaneous
Docked to
NIBE VVM 225Chapter 1 | Important information6

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
F2040
F2040-8
Part no. 064 109
F2040-6
Part no. 064 206
F2120
F2120-8 3x400V
Part no. 064 135
F2120-8 1x230V
Part no. 064 134
7Chapter 1 | Important informationNIBE VVM 225

Transport
VVM 225 should be transported and stored vertically in
a dry place. However, the VVM 225 may be carefully
laid on its back when being moved into a building.
R
0
R
0
Assembly
• Position VVM 225 on a firm base that can take the
weight. Use the product's adjustable feet to obtain a
horizontal and stable set-up.
The space where VVM 225 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 225 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 225 can be carried out from the front.
800
10-25
50
50
NOTE
Leave 10 – 25 mm free space between
VVM 225 and the wall behind for routing cables
and pipes.
NIBE VVM 225Chapter 2 | Delivery and handling8
2 Delivery and handling

Supplied components
Room sensor
Outside sensor
LEK
LEK
LEK
Current sensor*
*Only to 3X400V
LOCATION
The kit of supplied items is placed on top of the product.
9Chapter 2 | Delivery and handlingNIBE VVM 225

Removing the covers
Front cover
VVM 225
VVM 225
1
2
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 225Chapter 2 | Delivery and handling10

3x400V, Enamel
B
B
A
A
VVM225
PZ3
PZ1
EB1
BT63
QN10
W130
AA2
AA3
BT6
SF1
AA4-XF4
AA4-XF3
BP5
QM22
GP1
CM1
FQ10-BT30FQ10-S2
FQ10
FC1
AA1
AA1-S2
QM20
XL5
XL3
BF1
XL8 XL9 XL1
FL2
BT2
XL2
XL4
QM31
BT3
AA4PF3PF1QQ1BT7 FR1
11Chapter 3 | Indoor module's designNIBE VVM 225
3 Indoor module's design

3x400V, Stainless
steel
B
B
A
A
VVM225
PZ3
PZ1
EB1
BT63
QN10
W130
AA2
AA3
BT6
SF1
AA4-XF4
AA4-XF3
BP5
QM22
GP1
CM1
FQ10-BT30FQ10-S2
FQ10
FC1
AA1
AA1-S2
QM13 QM20QM35QM11XL4 XL3
BT3
XL8 XL9 RM1 FL1 XL1
FL2
BT2
XL2
BF1
QQ1 AA4PF3PF1BT7
NIBE VVM 225Chapter 3 | Indoor module's design12

3x230V, Stainless
steel
B
B
A
A
VVM225
PZ3
PZ1
EB1
BT63
QN10
W130
AA2
AA3
BT6
SF1
AA4-XF4
AA4-XF3
BP5
QM22
GP1
CM1
FQ10-BT30FQ10-S2
FQ10
FC1
AA1
AA1-S2
QM13 QM20QM35QM11XL4 XL3
BT3
XL8 XL9 RM1 FL1 XL1
FL2
BT2
XL2
BF1
QQ1 AA4PF3PF1BT7
13Chapter 3 | Indoor module's designNIBE VVM 225

1x230V, Stainless
steel
B
B
A
A
VVM225
PZ3
PZ1
EB1
BT63
QN10
W130
AA2
AA3
BT6
SF1
AA4-XF4
AA4-XF3
BP5
QM22
GP1
CM1
FQ10-BT30FQ10-S2
FQ10
FC1
AA1
AA1-S2
QM13 QM20QM35QM11XL4 XL3
BT3
XL8 XL9 RM1 FL1 XL1
FL2
BT2
XL2
BF1
QQ1 AA4PF3PF1BT7
NIBE VVM 225Chapter 3 | Indoor module's design14

Component location,
rear
Rear side
WM1
UB2
UB1
List of components
Pipe connections
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*XL5
Connection, docking from heat pump Ø22 mmXL8
Connection, docking to heat pump Ø22 mmXL9
*This connection cannot be seen in component placing pictures of stainless
steel products. Located on the rear of the product’s valve connector.
HVAC components
HVAC components
Expansion vessel, closed, heating mediumCM1
Safety valve, water heaterFL1
Safety valve, heating mediumFL2
Heating medium pump, charge pump/heating
medium
GP1
Filler valve, heating mediumQM11
Filler valve, heating mediumQM13
Venting valve, climate systemQM20
Venting valve, coilQM22
Shut-off valve, heating mediumQM31
Shut-off valve, incoming cold waterQM35
Reversing valve, climate system/water heating,
flow line
QN10
Check valve, cold waterRM1
TundishWM1
Sensors etc.
Sensors etc.
Flow meterBF1
Manometer, heating systemBP5
Temperature sensors, heating medium flowBT2
Temperature sensors, heating medium returnBT3
Temperature sensor, hot water, chargingBT6
Temperature sensor, hot water, topBT7
Temperature sensor, heating medium supply after
immersion heater
BT63
Thermostat, standby modeFQ10-
BT30
Electrical components
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
Resetting temperature limiterFQ10-S2
Electrical anodeFR1
Main switchSF1
Network cable for NIBE UplinkTM W130
Miscellaneous
Miscellaneous
Rating platePZ1
Serial number platePZ3
Cable glandUB1
Cable glandUB2
Inspection panel, vessel, Ø80 mmQQ1
Designations according to standard EN 81346-2.
15Chapter 3 | Indoor module's designNIBE VVM 225

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 below.
However, each system must be dimensioned individually
to achieve 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
22200.27F2120-8
(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
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
NOTE
An undersized system can result in damage to
the machine and lead to malfunctions.
VVM 225 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 225
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 225 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 225Chapter 4 | Pipe connections16
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 225 has been filled with water.
Otherwise the temperature limiter, thermostat
and the immersion heater etc can be damaged.
BOILER AND RADIATOR VOLUMES
H
VVM 225 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.
SYSTEM DIAGRAM
VVM 225 consists of water heater with charge coil, ex-
pansion vessel, safety valve (not enamel), filling valve
(not enamel), immersion heater, circulation pump and
control system. VVM 225 connects to the climate sys-
tem.
VVM 225 is directly adapted for connection and commu-
nication with a compatible NIBE air/water heat pump,
see chapter "Outdoor modules", and together they con-
stitute a complete heating installation.
When it is cold outdoors, the air/water heat pump works
with VVM 225, and if the outdoor air temperature falls
below the heat pump’s stop temperature, all heating is
carried out by VVM 225.
Enamel
P
XL 8 4 3 2 19
Stainless steel
P
XL 8 4 3 2 19
17Chapter 4 | Pipe connectionsNIBE VVM 225

SYMBOL KEY
MeaningSymbol
Shut-off valve
Non-return valve
Mixing valve
Circulation pump
Immersion heater
Expansion vessel
Flow meter/energy meter
Shut off valve
Pressure gauge
Control valve
Safety valve
Reversing valve/shunt
Manual reversing valve/shunt
Indoor module
Cooling system
Radiator system
Domestic hot water
Hot water circulation
NIBE VVM 225Chapter 4 | Pipe connections18

Dimensions and pipe
connections
VVM 225
Enamel
B
B
A
A
VVM225
XL3 XL2 XL1XL4XL9XL8 XL5
Stainless steel
B
B
A
A
VVM225
XL3
XL2
XL1XL4XL9XL8
Pipe dimensions
Connection
22mmHeating medium supply line ØXL1
22mmHeating medium return line ØXL2
22mmCold water ØXL3
22mmHot water ØXL4
15mmHot water circulation Ø *XL5
22mmConnection, docking from heat pump ØXL8
22mmConnection, docking to heat pump ØXL9
*This connection cannot be seen in component placing pictures of stainless
steel products. Located on the rear of the product’s valve connector.
Setting out dimensions
VVM 225 Enamel, Stainless steel
VVM 225
H
440
420
402
351
162
350
428
188
338
402
479
512
25-50
YXHConnection
428512200mmXL1 Heating medium supply line Ø
350479200mmXL2 Heating medium return line Ø
440402250mmXL3 Cold water Ø
402338260mmXL4 Hot water Ø
402300280mmXL5 Hot water circulation Ø
42018885mmXL8 Connection, docking from heat
pump Ø
35118885mmXL9 Connection, docking to heat
pump Ø
162460145mmWM1 Drip tray
19Chapter 4 | Pipe connectionsNIBE VVM 225

Installation alternative
VVM 225 can be connected to extra water heater.
Further option information is available at nibe.eu and in
the respective assembly instructions for the accessories
used. See page 65 for the list of the accessories that
can be used with VVM 225.
Extra hot water heaters
The indoor module 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.
XL8
XL9
OUTLINE DIAGRAM
Connecting VVM 225 to heat pump
You can find a list of compatible air/water heat pumps
in section "Outdoor modules".
VVM 225 is not equipped with shut off valves; these
must be installed outside the indoor module to facilitate
any future servicing.
XL1
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
Connecting cold and hot water
The mixer valve must be installed if the factory setting
is changed to ensure that the temperature can exceed
60 °C. National regulations must be observed. The set-
ting is made in menu 5.1.1 (See page 49).
Enamel
XL3
XL4
Stainless steel
XL3
XL4
Connecting the climate system
When connecting to a system with thermostats on all
radiators/underfloor heating coils, a relief valve must be
fitted, or a thermostat must be removed to ensure suf-
ficient flow.
P
XL1
XL2
Connection of extra climate system
When more than one climate system is to be heated,
the following connection can be used.
The ECS 40/ECS 41 accessory is required for this con-
nection.
-EP21-GP20-EP21-BT2
-EP21-AA25
-EP21-BT3
-EP21-QN25
-EP21
XL1
XL2
NIBE VVM 225Chapter 4 | Pipe connections20