Nibe SMO 40 User guide

Installer manual
LEK
SMO 40
Control module
IHB GB 1546-3
231760

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 34.
How to scroll through menus and make different settings is described on page 36.
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 (if a hot water heater is installed to your SMO 40), first turn the
control knob to mark menu 2 (water droplet) and then press the OK button twice.
In event of disturbances in comfort
If a disturbance in comfort of any type occurs there are some measures that can be taken before you need to
contact your installer. See page 53 for instructions.

Table of Contents
41 Important information
4Safety information
72 Delivery and handling
7Mounting
7Supplied components
83 The Control Module Design
8Electrical components
94 Pipe connections
9General
10Docking alternatives
155 Electrical connections
15General
18Connections
21Optional connections
27Connecting accessories
286 Commissioning and adjusting
28Preparations
28
Commissioning with NIBE air/water heat
pump
28
Commissioning with additional heating
only
28Check the reversing valve
28Check AUX socket
28Cooling mode
29Start guide
30Setting the cooling/heating curve
32Setting hot water circulation
32Pool
33SG Ready
347 Control - Introduction
34Display unit
35Menu system
388 Control
38Menu 1 - INDOOR CLIMATE
39Menu 2 - HOT WATER
39Menu 3 - INFO
40Menu 4 - MY SYSTEM
41Menu 5 - SERVICE
509 Service
50Service actions
5310 Disturbances in comfort
53Manage alarm
53Troubleshooting
54Additional heating only
5511 Accessories
5712 Technical data
57Dimensions and setting-out coordinates
58Technical specifications
59Electrical circuit diagram
65Index
3Table of Contents |SMO 40

Safety information
This manual describes installation and service proced-
ures for implementation by specialists.
This appliance can be used by children
aged from 8 years and above and per-
sons 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. Chil-
dren shall not play with the appliance.
Cleaning and user maintenance shall
not be made by children without super-
vision.
Rights to make any design or technical
modifications are reserved.
©NIBE 2015.
Symbols
NOTE
This symbol indicates danger to machine or
person.
Caution
This symbol indicates important information
about what you should observe when main-
taining your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
SMO 40 is CE marked and fulfils IP21.
The CE marking means that NIBE ensures that the
product meets all regulations that are placed on it
based on relevant EU directives. The CE mark is obligat-
ory for most products sold in the EU, regardless where
they are made.
IP21 means that objects with a diameter larger than
or equivalent to 12.5 mm cannot penetrate and cause
damage and that the product is protected against
vertically falling drops of water.
Serial number
The serial number can be found on the upper side of
the cover on the control module.
LEK
Serial number
Caution
Always give the product's serial number when
reporting a fault.
Country specific information
Installer manual
This installer manual must be left with the customer.
SMO 40Chapter 1 | Important information4
1 Important information

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. Fill in the page for information about installation data in the User
manual.
DateSignatureNotesDescription
✔
Electricity (page 15)
Communication, heat pump
Supply connected 230 V
Outside sensor
Room sensor
Temperature sensor, hot water charging
Temperature sensor, hot water top
Temperature sensor, external flow line
Temperature sensor, external return line
Charge pump
Shuttle valve
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
AA3-X7
Dipswitch
Miscellaneous
Checking additional heater
Checking the function of the reversing
valve
Checking charge pump function
Completed installation check of heat
pump and associated equipment
5Chapter 1 | Important informationSMO 40
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Contact information
KNV Energietechnik GmbH, Gahberggasse 11, 4861 SchörflingAT
Tel: [phone] Fax: [phone] E-mail: [e-mail] www.knv.at
NIBE Wärmetechnik c/o ait Schweiz AG, Industriepark, CH-6246 AltishofenCH
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.ch
Druzstevni zavody Drazice s.r.o, Drazice 69, CZ - 294 71 Benatky nad JizerouCZ
Tel: [phone] Fax: [phone] E-mail: [email protected] www.nibe.cz
NIBE Systemtechnik GmbH, Am Reiherpfahl 3, 29223 CelleDE
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.de
Vølund Varmeteknik A/S, Member of the Nibe Group, Brogårdsvej 7, 6920 VidebækDK
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.volundvt.dk
NIBE Energy Systems OY, Juurakkotie 3, 01510 VantaaFI
Puh: 09-274 697 0 Fax: [phone] E-mail: inf[email protected] www.nibe.fi
NIBE Energy Systems France Sarl, Zone industrielle RD 28, Rue du Pou du Ciel, 01600 ReyrieuxFR
Tel : [phone] Fax : [phone] E-mail: inf[email protected] www.nibe.fr
NIBE Energy Systems Ltd, 3C Broom Business Park, Bridge Way, Chesterfield S41 9QGGB
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.co.uk
NIBE Energietechniek B.V., Postbus 634, NL 4900 AP OosterhoutNL
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibenl.nl
ABK AS, Brobekkveien 80, 0582 Oslo, Postadresse: Postboks 64 Vollebekk, 0516 OsloNO
Tel. sentralbord: [phone] E-mail: [email protected] www.nibeenergysystems.no
NIBE-BIAWAR Sp. z o. o. Aleja Jana Pawła II 57, 15-703 BIAŁYSTOKPL
Tel: [phone] Fax: [phone] E-mail: [e-mail] www.biawar.com.pl
© "EVAN" 17, per. Boynovskiy, Nizhny NovgorodRU
Tel./fax [phone] E-mail: [email protected] www.nibe-evan.ru
NIBE AB Sweden, Box 14, Hannabadsvägen 5, SE-285 21 MarkarydSE
Tel: [phone] Fax: [phone] E-mail: inf[email protected] www.nibe.se
For countries not mention in this list, please contact Nibe Sweden or check www.nibe.eu for more information.
SMO 40Chapter 1 | Important information6

Mounting
NOTE
For wall mounting, use the mounting adapted
for the base.
120
10
310 35
410
360
215 70
120
Use all mounting points and install SMO 40 upright flat
against the wall without any part of the control module
protruding out beyond the edge of the wall.
Leave at least 100 mm free space around the control
module to facilitate access and cable routing on install-
ation and service.
NOTE
Access the screws for installing the front cover
from underneath.
Supplied components
Room sensorOutside sensor
LEK
Temperature sensorInsulation tape
LEK
Cable tiesAluminium tape
LEK
LEK
LEK
Current sensorHeating pipe paste
Installatörshandbok
SMO 40
Tillbehörskort
Tillbehör
IHBSE 1345-1
331075
IHB SMO 40 Accessory
board
7Chapter 2 | Delivery and handlingSMO 40
2 Delivery and handling

L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA2
AA4-XJ3
X1
SF1
AA5
PF3 AA4
AA3
X2
AA7
AA4-XJ4
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
1
2
3
4
AA2
X1
K2
FA1
X2
AA7
UB2UB1
Electrical components
Base cardAA2
Input circuit boardAA3
Display unitAA4
AA4-XJ3 USB socket
AA4-XJ4 Service outlet (No function)
Accessory cardAA5
Extra relay circuit boardAA7
Miniature circuit-breakerFA1
Emergency mode relayK2
Terminal block, incoming electrical supplyX1
Terminal block, AUX4 - AUX6X2
SwitchSF1
Serial number platePF3
Cable grommet, incoming supply electricity,
power for accessories
UB1
Cable gland, signalUB2
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
SMO 40Chapter 3 | The Control Module Design8
3 The Control Module Design

General
Pipe installation must be carried out in accordance with
current norms and directives. See manual for compat-
ible NIBE air/water heat pump for installation of the
heat pump.
Compatible NIBE air/water heat pumps
Compatible NIBE air/water heat pumps must be
equipped with a control card that has at least the
software version given in the following list. The control
card version is displayed in the heat pump's display (if
applicable) upon start-up.
Software versionProduct
55F2015
55F2016
118F2020
55F2025
55F2026
all versionsF2030
all versionsF2040
55F2300
Symbol key
MeaningSymbol
Shut-off valve
Trim valve
Shunt / shuttle valve
Safety valve
Temperature sensor
Pressure gauge
P
Circulation pump
Particle filter
Auxiliary relay
Temperature sensor installation on pipe
LEK
LEK
The temperature sensors are mounted with heat con-
ducting paste, cable ties (the first cable tie is secured
to the pipe in the middle of the sensor and the other
cable tie is mounted approx. 5 cm beyond the sensor)
and aluminium tape. Then insulate with supplied insu-
lation tape.
NOTE
Sensor and communication cables must not
be placed near power cables.
9Chapter 4 | Pipe connectionsSMO 40
4 Pipe connections

Docking alternatives
SMO 40 can be connected with other products from
NIBE in several different ways, some of which are shown
below (accessories may be required).
Further option information is available at www.nibe.eu
and in the respective assembly instructions for the ac-
cessories used. See page 55 for a list of the accessories
that can be used with SMO 40.
Installations with SMO 40 can produce heating and
hot water. Cooling can also be produced, but it de-
pends on the heat pump that is used.
On cold days of the year when the access to energy
from the air is reduced the additional heating can
compensate and help to produce heat. The additional
heating is also good to have as assistance if the heat
pump ends up outside its working range or if it has
been blocked for any reason.
NOTE
The heating medium side and the hot water
side must be fitted with the necessary safety
equipment in accordance with the applicable
regulations.
This is the outline diagram. Actual installations
must be planned according to applicable
standards.
Explanation
SMO 40AA25
Outdoor sensor1) BT1
Temperature sensor, hot water charging1) BT6
Temperature sensor, hot water top1) BT7
Temperature sensor, external supply line1) BT25
Room sensor1) BT50
Temperature sensor, external supply line
after electric heater
BT63
Temperature sensor, external return line1) BT71
Circulation pump, Heating mediumGP10
Reversing valve, Hot water/Heating medi-
um2)
QN10
Pool system 1 to 2CL11 to 12
Unit box with accessory card2) AA25
Temperature sensor, pool2) BT51
Exchanger, poolEP5
Circulation pump, poolGP9
Particle filter, poolHQ4
Three way valve, pool2) QN10
Trim valveRN10
Additional heatEB1
Expansion vesselCM5
Immersion heaterEB1
Safety valveFL10
Auxiliary relay/Contactor2) KA1
Trim valveRN11
Shut-off valveQM42 to 43
Heat pump systemEB101 to
104
Unit box with accessory card2) AA25
Temperature sensor, return line3) BT3
Temperature sensor, condenser supply
line3)
BT12
Heat pumpEB101 to
104
Safety valveFL10
External circulation pump, climate systemGP10
Charge pump2) GP12
Particle filter3) HQ1
Drain valve, Heating mediumQM1
Shut-off valve, Heating medium, FlowQM31
Shut off valve, Heating medium, ReturnQM32
Shut-off valveQM43
Non-return valveRM11
Climate system 2 to 3EP21 to 22
Unit box with accessory card2) AA25
Temperature sensor, heating medium
supply2)
BT2
Temperature sensor, heating medium re-
turn2)
BT3
Circulation pump2) GP20
SMO 40Chapter 4 | Pipe connections10

Shunt valve2) QN25
Cooling systemEQ1
Unit box with accessory card2) AA25
Temperature sensor, cooling supply line2) BT64
Single jacket accumulator tank, coolingCP6
Circulation pump, coolingGP13
Reversing valve, Cooling/Heating2) QN12
Hot water circulationQZ1
Unit box with accessory card2) AA25
Temperature sensor, outgoing hot water2) BT70
Circulation pump, domestic hot water
circulation
GP11
Mixer valve, hot waterFQ1
Non-return valveRM23 to 24
Trim valveRN20 to 21
Miscellaneous
Expansion vessel closed, Heating mediumCM1
Buffer vessel (UKV)CP5
Accumulator tank with hot water heatingCP10 to 11
Hot water/additional water heaterEB10
Immersion heaterEB20
Safety valve, Heating mediumFL2
Auxiliary relay/ContactorKA1
Trim valveRN10,
RN43, RN60
to 63
1) Included in and supplied SMO 40
2) Included in and supplied accessory
3) Included in and supplied NIBE heat pump (can vary depending
on heat pump).
Designations according to standards 81346-1 and
81346-2.
11Chapter 4 | Pipe connectionsSMO 40

Compatible NIBE air/water heat pump together with SMO 40 - docking step controlled
additional heat before reversing valve for hot water and cooling function (4 pipe system)
-FL2
-CM1
-EB101
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB101
-HQ1
-BT1
-AA25
-AA25
-BT63
-KA1
-EB1
-FL10
-RN10
-CP10
-AA25-QN10
-AA25-BT7
-AA25-BT6
-EB1
NOTE
NIBE does not supply all components in this
outline diagram.
This installation alternative is suitable for simpler install-
ations with a focus on low installation costs.
SMO 40 (AA25) starts and stops the heat pump (EB101)
to meet the heat and hot water demand of the install-
ation. At simultaneous heating and hot water demand
the reversing valve switches (AA25-QN10) periodically
between the climate system and the water heater/ac-
cumulator tank (CP10). When the hot water heater/ac-
cumulator tank is fully charged (CP10), the reversing
valve switches (AA25-QN10) to the climate system.
Additional heat (EB1) is connected automatically when
the power demand for the installation exceeds the
heat pump capacity. This is used for both heating and
charging hot water.
The additional heat can also be used if a higher temper-
ature in the hot water is required than the heat pump
can produce.
SMO 40Chapter 4 | Pipe connections12

Compatible NIBE air/water heat pump together with SMO 40 - docking step controlled addi-
tional heat after reversing valve for hot water and accessory for extra climate system, pool
and cooling
-EB20
-KA1
-FL2
-CM1
-EB101
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB101
-HQ1
-BT1
-AA25
-AA25 -AA25
-FL10
-RN10
-EP5
-GP9 BT51 POOL
-HQ4
-AA25
-CL11
-GP20
-BT3
-BT2
-QN25
-EP21
-AA25
-RN10
-CP10
-AA25-QN10
-AA25-BT7
-AA25-BT6
-BT25
-EB1
-CP5
-GP10
-KA1
-BT71
-EB1
-AA25
-CL11-QN19
-GP13
-CP6
-BT64
-EQ1-QN12
-EQ1
-BT50
NOTE
NIBE does not supply all components in this
outline diagram.
This installations alternative is suitable for more com-
plex installations with a focus on comfort.
SMO 40 (AA25) starts and stops the heat pump (EB101)
to meet the heat and hot water demand of the install-
ation. At simultaneous heating and hot water demand
the reversing valve switches (AA25-QN10) periodically
between the climate system and the water heater/ac-
cumulator tank (CP10). When the water heater/accu-
mulator tank is fully charged (CP10), the reversing valve
switches (AA25-QN10) to the climate system and pool.
When the pool needs heating the reversing valve (CL11-
QN19) switches from the climate system to the pool
system.
Additional heat (EB1) is connected automatically when
the energy demand exceeds the heat pump capacity.
Immersion heater (EB20) in the water heater/accumu-
lator tank (CP10) is used during the time to produce
hot water if the heat pump (EB101) is used for heating
the building at the same time.
The immersion heater (EB20) can also be used if a
higher temperature of hot water is required than the
heat pump can produce.
During cooling operation (requires compatible heat
pump) the reversing valve (EQ1-QN12) switches to the
cooling system (EQ1). If several simultaneous demands
occur while there is a cooling demand the installation
reacts differently. In event of a hot water demand the
reversing valve (EQ1-QN12) switches back and hot
water is produced until the demand is fulfilled. In event
of a heating demand the reversing valve (EQ1-QN12)
instead switches periodically between the demands. If
the cooling demand is met, the reversing valve switches
back to basic mode (heat/hot water).
13Chapter 4 | Pipe connectionsSMO 40

Compatible NIBE air/water heat pump together with SMO 40 and electric heater after reversing
valve for hot water and pool and extra climate system (floating condensing)
-AA25-BT71
-AA25-BT25
-CM1
-FL2
>-EB101
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB101
-HQ1
-AA25
-FL10
-RM11
-BT1
-AA25
-CP10
-AA25-BT6
-AA25-BT7
-RN63
-RN62
-CP11
-RN60
-RN61
-EB10
-QZ1
-GP11
-RN20
-RM23
-RM24
-EB10
-FQ1 -BT70
-AA25
-RN21
-BT3
-BT2
-EP21
-GP20
-QN25
-AA25
-GP20
-BT3
-BT2
-EP22
-QN25
-AA25
-CM5 -FL10
-QM42
-QM43-RN11
-EB1
-EB1
POOL1
POOL2
-RN10 -GP9 -BT51 -HQ4
-EP5
-CL11
-AA25
-CL11-QN19
-CP6
-BT64
-AA25
-EQ1
-GP13
-RM11
>-EB102
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB102
-HQ1
-FL10
-EB103-AA25
>-EB103
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB103
-HQ1
-FL10
-RM11
-RN10 -GP9 -BT51 -HQ4
-EP5
-CL12
-EQ1
-QN12
-CL12
-QN19
>-EB104
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB104
-HQ1
-FL10
-RM11
-AA25-QN10
-CP5
-AA25-GP10
-RN43
NOTE
NIBE does not supply all components in this
outline diagram.
NOTE
Different types of demand (heating, hot water
etc.) mean different supply and return temper-
atures as well as different flows to the heat
pump.
When connecting pipes in installations with
several compressors and different heating
demands, ensure that these are separated so
that different return temperatures are not
mixed. Otherwise this can affect the heating
installation's efficiency.
See outline diagram for example.
This installations alternative is suitable for more com-
plex installations with a focus on comfort.
SMO 40 (AA25) starts and stops the heat pumps EB101)
and (EB102) to meet the heat and hot water demand
of the installation. The heat pump (EB103) is used for
heating and pool heating and heat pump (EB104) is
used for cooling, heating and pool heating.
At simultaneous heating and hot water demand the
reversing valve switches (AA25-QN10) periodically
between the climate system and the water heater/ac-
cumulator tank (CP10). When the hot water heater/ac-
cumulator tank is fully charged (CP10), the reversing
valve switches (AA25-QN10) to the climate systems.
When the pool needs heating the reversing valve (CL11-
QN19) or (CL12-QN19) switches from the climate sys-
tem to the pool system.
Additional heat (EB1) is connected automatically when
the energy demand exceeds the heat pump capacity.
Additional water heating is obtained from the addition-
al water heater (EB10).
During cooling operation (requires compatible heat
pump) the reversing valve (EQ1-QN12) switches to the
cooling system (EQ1). If several simultaneous demands
occur while there is a cooling demand the installation
reacts differently. In event of a heating demand the
reversing valve (EQ1-QN12) instead switches periodic-
ally between the demands. If the cooling demand is
met, the reversing valve switches back to basic mode
(heat/hot water). In event of a pool heating demand
the reversing valve (EQ1-QN12) switches back at the
same time as the reversing valve (CL12-QN19) switches
to the pool system (CL12) and pool heating is produced
until the demand is fulfilled.
SMO 40Chapter 4 | Pipe connections14

General
■Disconnect SMO 40 before insulation testing the
house wiring.
■If the building is equipped with an earth-fault
breaker, SMO 40 should be equipped with a separate
one.
■SMO 40 must be installed via an isolator switch with
a minimum breaking gap of 3mm.
■For the electrical wiring diagram for the control
module, see page 59.
■Communication and sensor cables to external con-
nections must not be laid close to high current cables.
■The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX or LiYY or equivalent.
■Use a screened three core cable for communication
with the heat pump.
■When cable routing in SMO 40, cable grommets (UB1
and UB2, marked in image) must be used.
NOTE
The switch (SF1) must not be moved to "" or
" " until the boiler in the system has been
filled with water. The compressor in the heat
pump and any external addition can be dam-
aged.
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Cut the current with the circuit
breaker before carrying out any servicing.
Electrical installation and wiring must be car-
ried out in accordance with the stipulations in
force.
When installing SMO 40, NIBE's air/water heat
pump and any addition must be current free.
NOTE
See outline diagram for your system for phys-
ical location of the temperature sensor that is
to be installed.
Caution
The relay outputs on the accessory card (AA5)
can have a max load of 2 A (230 V) in total.
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
SF1
AA5
FA1
UB2UB1
Miniature circuit-breaker
The control module operating circuit and parts of its
internal components are internally fused by a miniature
circuit-breaker (FA1).
15Chapter 5 | Electrical connectionsSMO 40
5 Electrical connections

Accessibility, electrical connection
The cover of the control module is opened using a Torx
25 driver. Assembly takes place in reverse order.
LEK LEK
3
1
2
NOTE
The cover to access the base card is opened
using a Torx 25 screwdriver.
LEK LEK
3
1
2
The display may need to be moved for easier access
when connecting electrics. This is easily done by follow-
ing these steps.
1.
LEK LEK
LEK
LEK
b
a
Press in the catch on the upper rear side of the
display unit towards you (a) and move the display
unit upwards (b) so that the mountings unhook
from the panel.
2.
LEK LEK
LEK
LEK
b
a
Lift the display unit from its mountings.
3.
LEK LEK
LEK
LEK
b
a
Align the two lower mountings on the reverse of
the display unit with the two upper holes in the
panel as illustrated.
SMO 40Chapter 5 | Electrical connections16

4.
LEK LEK
LEK
LEK
b
a
Secure the display on the panel.
5. When the electrical connection is ready the display
must be reinstalled with three mounting points
again, otherwise the front cover cannot be in-
stalled.
Cable lock
Use a suitable tool to release/lock cables in the heat
pump terminal blocks.
Terminal block on the electrical card
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
LEK
1
1
2
2
3
3
1
2
3
3
4
1
2
1
2
Terminal block
LEK
1 mm
3,5 mm
LEK
1 mm
3,5 mm
17Chapter 5 | Electrical connectionsSMO 40

Connections
NOTE
To prevent interference, unscreened commu-
nication and/or sensor cables to external con-
nections must not be laid closer than 20 cm
from high voltage cables.
Power connection
SMO 40 must be installed via an isolator switch with a
minimum breaking gap of 3mm. Minimum cable area
must be sized according to the fuse rating used.
1N
L
X1
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
X1
1 1N
L0 432PE
Tariff control
If the voltage to the compressor in the heat pump dis-
appears for a certain period, simultaneous blocking of
these must take place via software controlled input
(AUX input) to avoid alarm, see page 24.
Connecting the charge pump for the heat
pump 1 and 2
Connect circulation pump (EB101-GP12) as illustrated
to terminal block X4:5 (PE), X4:6 (N) and X4:7 (230 V)
on the base board (AA2).
Control signal for (EB101-GP12) is connected to termin-
al block X4:7 (GND) and X4:8 (PWM) on the input board
(AA3) as illustrated.
If two heat pumps are connected to SMO 40 the circu-
lation pump (EB102-GP12) must be connected to ter-
minal blocks X4:12 (PE), X4:13 (N) andX4:15 (230 V)
on the base board (AA2) as illustrated. Control signal
for (EB102-GP12) is connected to terminal blocks X4:5
(GND) and X4:6 (PWM) on the input board (AA3) as il-
lustrated.
TIP
Two charge pumps (four if the internal ac-
cessories card is used) can be connected to
and controlled by SMO 40. More charge
pumps can be connected if the accessories
card is used, two pumps per card.
987654
SMO
Externt
PE
L
N
External
SMO40
AA2-X4
EB101-GP12
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
1
2
3
4
AA2-X4
161514131211
SMO
Externt
PE
L
N
External
SMO40
AA2-X4
EB102-GP12
5678910
SMO
Externt
External
SMO40
AA3-X4
EB101-GP12
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X4
345678
SMO
Externt
External
SMO40
AA3-X4
EB102-GP12
SMO 40Chapter 5 | Electrical connections18

Communication with heat pump
Connect the heat pump (EB101) with a screened three
core cable to terminal block X4:1 (A), X4:2 (B) and X4:3
(GND) on the accessory card (AA5) as illustrated.
If several heat pumps are to be connected to SMO 40
these must be connected in cascade as illustrated.
NOTE
With accessories, up to 8 heat pumps can be
controlled by SMO 40.
Caution
Heat pumps with inverter controlled com-
pressor can only be combined with other in-
verter controlled heat pumps of the same
model.
6
5
4
3
2
1
123
A
A
B
B
GND
GND
A
B
GND
45
SMO
5 6
4
2 3
1
A
B
GND
5
4
2 3
1
A
B
GND
A
B
GND
6
5
4
3
2
1
A
B
GND
A
B
GND
5 64
2 3
1
A
B
GND
54
2 3
1
A
B
GND
A
B
GND
F2015/F2020/F2025/F2300
F2016/F2026
F2030
F2040
F2015/F2020/F2025/F2300
F2016/F2026
F2030
F2040
AA5-X4
AA21-J2 AA21-J2
X5 X5
X5 X5
AA23-X4
SMO40
AA23-X4
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
ON
1 2 3 4 5 6 7 8
-X9
-X2 24
20
21
22
23
15
16
17
18
19
10
11
12
13
14
5
6
7
8
9
1
1
NLPEPE
12345678
2
1 2 3 4 5 6 7 8 9
2
3
4
-X8
-X4
-X10
-X1
AA5-X4
19Chapter 5 | Electrical connectionsSMO 40

Outside sensor
Install the outside temperature sensor (BT1) in the
shade on a wall facing north or north-west, so it is un-
affected by the morning sun.
Connect the sensor to terminal block X6:1 and X6:2 on
the input card (AA3). Use a twin core cable of at least
0.5 mm² cable area.
If a conduit is used it must be sealed to prevent con-
densation in the sensor capsule.
SMO Externt
1
2
3
4
5
6
7
8
AA3-X6
ExternalSMO40
BT1
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
Temperature sensor, hot water charging
The temperature sensor, hot water charging (BT6) is
placed in the submerged tube on the water heater.
Connect the sensor to terminal block X6:7 and X6:8 on
the input card (AA3). Use a twin core cable of at least
0.5 mm² cable area.
Hot water charging is activated in menu 5.2 or in the
start guide.
SMO Externt
6
7
8
9
10
11
12
13
AA3-X6
ExternalSMO40
BT6
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
Temperature sensor, hot water top
A temperature sensor for hot water top (BT7) can be
connected to SMO 40 to show the water temperature
at the top of the tank (if it is possible to install a sensor
at the top of the tank).
Connect the sensor to terminal block X6:15 and X6:16
on the input card (AA3). Use a twin core cable of at
least 0.5 mm² cable area.
SMO Externt
11
12
13
14
15
16
17
18
AA3-X6
ExternalSMO40
BT7
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
Temperature sensor, external flow line
Connect temperature sensor, external supply (BT25)
(required for additional heat after reversing valve
(QN10)), to terminal block X6:5 and X6:6 on the input
card (AA3). Use a two core cable with a minimum 0.5
mm² cable area.
SMO Externt
4
5
6
7
8
9
10
11
AA3-X6
ExternalSMO40
BT25
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
Temperature sensor, external return line
Connect temperature sensor, external return line (BT71)
to terminal block X6:17 and X6:18 on the input card
(AA3). Use a twin core cable of at least 0.5 mm² cable
area.
SMO Externt
11
12
13
14
15
16
17
18
AA3-X6
ExternalSMO40
BT71
L N 1 1 0 2 3 4PE
1 2 3 4
LEK
AA3-X6
NOTE
For docking that requires connection of other
sensors. See "Possible selection for AUX inputs"
on page 24.
SMO 40Chapter 5 | Electrical connections20