Nibe SMO 40 User guide

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 1 (6)
Application
Buildings with water-borne heating sys-
tems.
Outline principle
Designations according to standard IEC 81346-1 and 81346-2.
Alternative
NOTE! This is an outline diagram. Actual
installation must be engineered according
to current standards.
NOTE! NIBE does not supply all compo-
nents in this outline diagram.
See the appropriate "Installer manual"/"In-
stallation and Maintenance Instructions" for
more information.
Accessories
Additional heating before QN10
Reset alternative
-FL2
-CM1
-EB101
-QM1
-BT3
-BT12 -QM31
-QM32 -QM43
-GP12
-EB101
-HQ1
-BT1
-AA25
-AA25
-RN10
-CP10
-AA25-QN10
-AA25-BT7
-AA25-BT6
-BT50
-AA25
-BT25
-BT71
-AA25
Additional heat after QN10
☑Hot water
☑VPB
☐Oil, gas, or pellet boiler
☐ VPA
☐Step controlled electrical addition with
3 pipe UKV
☐Additional heat in tank
☐HWC
☐Step controlled electrical addition
☐Oil, gas, or pellet boiler
☐Additional water heater
☐Step controlled electrical addition with
2 pipe UKV (volume increase)
☐Oil, gas, pellets or wood boiler with hot
water heating
☐Extra climate system
☐Pool
☐VVC with AXC
☐Shunt controlled addition (Oil, gas or
pellet boiler) with 2-pipe UKV

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 2 (6)
Basic functions
Heat production
SMO 40 is equipped with an outdoor temper-
ature controlled heating control system. This
means that the supply of heat to the house is
regulated in accordance with the chosen setting
of the regulating curve (curve slope and offset).
After adjustment, the correct amount is supplied
to meet the house demand at the present outside
temperature. For heat production, the control
system calculates a heating decit in the form of
"degree-minutes" which means that the engage-
ment of heating production is accelerated the
larger the subnormal temperature in question. To
obtain a system that compensates faster the sup-
plied room sensor should be installed.
Hot water production
During hot water production SMO 40 goes to hot
water mode. No room heat is produced in this
mode. Maximum time for hot water charging can
be adjusted in the menu system. After this, heat-
ing is produced for the remaining period of time
before further water heating can take place.
Hot water charging starts when the hot water
sensor has fallen to the set start temperature. Hot
water charging stops when the hot water tem-
perature on the hot water sensor (BT6) has been
reached.
For occasional higher demand for hot water, the
"temporary lux"・function can be used to raise
the temperature for 3 to 12 hours (selected in the
menu system).
Heat pump
F2025/F2026/F2030/F2040/F2300 can be con-
nected to SMO 40.
The heat pump supplies the house with heating.
When the heating demand exceeds the heat
pump capacity the additional heat is engaged as
additional heating (connected to SMO 40).
Room control
SMO 40 is supplied with a room sensor (BT50).
The room temperature sensor has up to three
functions:
1. Show current room temperature in the con-
trol module display.
2. Option of changing the room temperature
in °C.
3. Makes it possible to change/stabilise the
room temperature.
Install the sensor in a neutral position where the
set temperature is required. A suitable place is on
a free inner wall in a hall approx. 1.5 m above the
oor. It is important that the sensor is not pre-
vented from measuring the correct room temper-
ature by being located, for example, in a recess,
between shelves, behind a curtain, above or close
to a heat source, in a draft from an external door
or in direct sunlight. Closed radiator thermostats
can also cause problems.
The installation operates without the sensor, but
if one wishes to read off the accommodation's
indoor temperature in the SMO 40 display, the
sensor must be installed.
Step controlled additional heat
Heat pump installations that are not dimensioned
to provide the entire heat output requirement re-
quire additional output during cold days. The step
controlled additional heat (if connected) is auto-
matically switched on (in different steps) if the
output is not sufcient to reach the temperature
levels requested by the control computer.
SMO 40 can provide up to 230 V control signals
for the additional heating, i.e. signals to control
external relays, contactors etc, but not to supply
them with power.
Step controlled additional heat can be controlled
by up to three potential free relays in the heat
pump (3 step linear or 7 step binary).
Step in occurs with at least 1 minute interval and
step outs with at least 3 seconds interval.
Shunt controlled additional heat
This connection enables an external additional
heater, e.g. an oil boiler, to assist with heating.
SMO 40 controls a shunt valve and a circulation
pump. If the heat pump does not manage to
maintain the correct supply temperature, the
addition starts. When the boiler temperature
has been increased to about 55°C, the control
module sends a signal to the shunt valve to open
from the addition. The shunt adjusts so the true
flow temperature corresponds with the control
system’s theoretical calculated set point value.
When the heating requirement drops sufficiently
so the additional heat is no longer required the
shunt closes completely. The boiler will be kept
warm for a further 12 hours to be prepared for
any increase in the heating requirement.
External control (AUX-input)
SMO 40 can to some degree control the instal-
lation using signals from external systems (for
example DUC) connected to the three software
controlled inputs (AUX inputs). However, the
alarm and time conditions in SMO 40 override the
external control.
The following functions can be controlled:
nBlocking the compressor in heat pump
nBlocking additional heat
nBlocking heating
nTariff blocking
nActivating temporary lux (extra hot water)
n External adjustment of ow temperature
All control signals should occur with poten-
tial-free relays.
Software controlled output (AUX
output)
It is possible to have an external connection
through the relay function via a potential free
variable relay (max 2 A) on the terminal block
AA2-X4.
Optional functions for external connection:
nIndication of buzzer alarm signal (preselected
at the factory).
nControl of external circulation pump.
nControl of circulation pump for hot water cir-
culation.
If any of the above is installed to terminal block
AA2:X4 it must be selected in the control system.
Function

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 3 (6)
Extended functions
SMO 40 contains an accessory board, which can
be used for the following extended functions. If
more than one of the functions is used, either the
relevant accessory or accessory AXC 30 (an AXC
30 for each accessory function that is to be used)
is required.
Hot water circulation (VVC)
One pump can be controlled for the circulation of
the hot water during selectable periods.
Step controlled additional heat
With the AXC 30 accessory a further three po-
tential free relays are used for addition control,
which then gives max 3+3 linear or 7+7 binary
steps.
Shunt controlled additional heat-
ing
Shunt controlled addition can also be connected
to the control module via accessory AXC 30.
This connection enables an external additional
heater, e.g. an oil boiler, to assist with heating.
Pool
This function requires the POOL 40 or AXC 30 ac-
cessory if larger separate shunt valves are needed.
A three-way valve can be connected to control
part, or all, of the heating medium flow to a pool
exchanger. The three way valve, or, if required
– the three way valves (however, with the same
control signal), is/are installed on the heating me-
dium circuit that goes to the radiator system as
normal. You determine in the control system how
many compressors are permitted to work with
pool heating. External circulation pump (GP10)
must be installed for pool operation.
During pool heating the heating medium is cir-
culated between the heat pump and the pool
exchanger using the heat pump's internal circula-
tion pumps.
The external circulation pump circulates the heat-
ing medium water in the climate systems and the
additional heat can be engaged as necessary at
the same time as the external flow sensor contin-
ually meters the heating demand of the house.
Up to two different pool systems can be connect-
ed to SMO 40 and controlled individually, it does
however require two POOL 40 accessories.
Extra climate system
This function requires the ECS 40/ECS 41 or AXC
30 accessory if larger separate shunt valves are
needed.
A shunt valve, ow and return sensor and a circu-
lation pump are connected to a second heating
circuit with a lower temperature demand (e.g.
under oor heating system). The temperature
in the extra climate system is controlled by the
heat pump and the shunt valve by offsetting the
heat curve (each climate system has its own heat
curve), room sensor or room unit.
Up to 3 extra climate systems can be connected
to the control module.
Function

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 4 (6)
List of Components
Pos Name Product name Supplier RSK no. Remarks
AA25 Control module SMO 40 NIBE 067 225
BT1 Outdoor sensor NIBE Included in SMO 40
BT6 Temperature sensor, hot water charging NIBE Included in SMO 40
BT7 Temperature sensor, hot water top NIBE Included in SMO 40
BT25 Temperature sensor, external supply NIBE Included in SMO 40
BT50 Room sensor NIBE Included in SMO 40
BT63 Temperature sensor, external supply line after "additional heating
before QN10"
NIBE Included in SMO 40
BT71 Temperature sensor, external return line NIBE Included in SMO 40
GP10 Circulation pump, heating medium
QN10 Reversing valve, hot water/heating medium VST 05/ VST 11/VST 20 NIBE 089 982 /089 152 / 089 388
CL11 Pool system 1 –
AA25 Unit box POOL 40 NIBE 067 062
BT51 Temperature sensor, pool POOL 40 NIBE 067 062
EP5 Heat exchanger, pool
GP9 Circulation pump, pool
HQ4 Particle filter
QN19 Reversing valve, pool POOL 40 NIBE 067 062
RN10 Trim valve –
EB1 Additional heat
EB1 Electric heater ELK 15/ELK 26/ELK 42 NIBE 069 022/ 067 074/ 067 075
KA1 Auxiliary relay/Contactor HR 10 NIBE 067 309
EB20 Immersion heater
EB20 Immersion heater IU (immersion heater) + K11 (ter-
minal block)
NIBE IU 3kW: 218 009
IU 6kW: 218 011
IU 9kW: 218 003
K11: 188 93
KA1 Auxiliary relay/Contactor HR 10 NIBE 067 309
EB101 Heat pump system
BT3 Temperature sensor, return line NIBE Included in F2025/F2026//F2030/F2040/F2300
BT12 Temperature sensor, condenser supply line NIBE Included in F2025/F2026//F2030/F2040/F2300
EB101 Heat pump F2025/F2026//F2030/F2040/F2300 NIBE F2025/F2026/F2300: The software must be 55 or later.
GP12 Charge pump CPD 11 NIBE (CPD 11-25/65: 067 321
CPD 11-25/75: 067 320
HQ1 Particle filter NIBE Included in F2025/F2026//F2030/F2040/F2300
QM1 Drain valve, heating medium
QM31 to 32,
QM43
Shut-off valve
RN10 Trim valve

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 5 (6)
Pos Name Product name Supplier RSK no. Remarks
EM1 External addition Certain boilers have their own circulation pumps, if not they
must be equipped with a flow guard.
AA25 Unit box AXC 30 NIBE 067 304
BT52 Temperature sensor, boiler AXC 30 NIBE 067 304
CM1 Expansion vessel, closed
EM1 Oil, gas, pellets or wood boiler
FL2 Safety valve
KA1 Auxiliary relay/Contactor HR 10 NIBE 067 309
QN11 Shunt valve
EP21 Extra climate system
AA25 Unit box ECS 40/ECS 41 NIBE 067 287/067 288
BT2 Temperature sensor, heating medium supply ECS 40/ECS 41 NIBE 067 287/067 288
BT3 Temperature sensor, heating medium return ECS 40/ECS 41 NIBE 067 287/067 288
GP20 Circulation pump ECS 40/ECS 41 NIBE 067 287/067 288
QN25 Shunt valve ECS 40/ECS 41 NIBE 067 287/067 288
QZ1 Hot water circulation
GP11 Circulation pump
Other information
CM1 Expansion vessel, closed
CP5 Buffer vessel, UKV
CP10 Accumulator tank with hot water heating VPA/VPB/VPAS NIBE Note that the tank must be able to receive the heat pump
charge effect. See the last page for a table of possible combina-
tions of NIBE's range.
EB10 Additional water heater
FL2 Safety valve, Heating medium

SMO 40 with heat pump, hot water, additional heat and accessory (liquid condensation).
NIBE AB - Energy Systems Box 14, 285 21 Markaryd Tel 0433 - 73 000 Fax [phone] www.nibe.se
ODM GB 1417-1
M11566
PAGE 6 (6)
Control
module Air/water heat pump Accumulator with hot water heater Circ. pump Water heater HW Control Addition Volume vessel
SMO 40
F2030 – 7 kW
VPA 300/200
VPA 450/300
VPAS 300/450
CPD 11-25 /65
CPD 11-25 / 75
VPB 200
VPB 300
VPBS 300
VPB 500
VPB 750-2
VST 11
ELK 15
ELK 26
UKV 100
UKV 200
UKV 300
UKV 500
F2030 – 9 kW
F2040 – 8 kW
F2040 – 12 kW
F2040 – 16 kW VPB 500
VPB 750-2
VPB 1000
VST 20
F2300 – 14 kW VST 11
VST 20
F2300 – 20 kW VPA 450/300
VPAS 300/450
VPB 750-2
VPB 1000 VST 20
System solutions
The following combinations of products are recommended for control with SMO 40.