Nibe F1345 Series User manual

2 STAGE HEAT PUMP WITH ROCK,
EARTH, LAKE OR GROUND WATER
AS HEAT SOURCE.
• Less than 3 kg refrigerant per cooling section/installation.
This means no inspection requirement.
• The two scroll compressors can supply up to 65°C to the
heating system.
• Double compressors give better power control, longer oper-
ating intervals, less wear and greater operational security.
• Display unit with easy-to-read colour screen.
– See status and make settings via SMS with the SMS 40
accessory.
– Control the heat pump externally, with for example BMS,
via the accessory MODBUS 40.
• The heat pump is available in the following sizes: 24, 30, 40
and 60 kW.
• Up to 540 kW with 9 x F1345 in the same system.
• Soft start relays and load monitor factory installed.
• Internally installed low energy circulation pumps (not brine
pump for 40 or 60 kW).
• Prepared for pool heating with POOL 40 accessory.
• Prepared for control of up to four heating systems with
ECS40/ECS41 accessory.
• Coefficient Of Performance (COP) up to 4.51 at 0/35 C
according to EN 14511.
• Separate cooling modules for compressors and brine pumps
give reliable service and lower noise levels.
• Easy to remove the cooling modules.
• NIBE Uplink compatible
NIBE™ F1345
GROUND SOURCE HEAT PUMP
NIBE F1345
NIBE F1345 is a heat pump for heating large buildings, such as
apartment buildings, churches and industrial premises. F1345 is
a flexible product with advanced control equipment and can be
adapted to several system solutions. The ground, bedrock or lakes
can be used as the heat source. Groundwater can also be used as
a heat source, but this requires an intermediate heat exchanger.
Another area of use could also be ventilation recovery in multi-
occupancy buildings. F1345 can control up to four different
climate systems (requires accessory), for example a lower flow
temperature in the underfloor heating loops than in the radiators.
F1345 is also prepared for control of an external additional heater.
At hot water production this can be prioritised, selectable with
one or more compressors. This permits simultaneous production
of heat and hot water.

2 NIBE F1345
INSTALLATION METHOD
The term “ground source” covers four different heat sources:
rock, surface soil, ground water and lake.
Ground water
A viable energy source for any building
where ground water is easily accessible.
Ground water can also be utilised as a heat source since it
has a temperature of between 4 and 12°C all-year round. The
heat pump collects stored solar energy from the ground water.
Normally, there is one well for drawing up water and one for
returning it.
Lake collector
Cost-effective installation
for lakeside homes.
If your home is built beside a water source such as a lake, heat
from the lake water can be extracted using a surface soil collector
anchored to the bottom of the lake.
Rock - using a ground probe
Ideal for refurbishment or adaptation
from a fossil fuel heating system.
In the lower subsoil of the so-called “near-surface geothermal
layer” lies a heat source with an almost constant temperature
that can be utilised all year round. The heat pump collects stored
solar energy from a collector in a hole drilled into the rock. The
depth of the hole can vary between 90 – 200 metres, depending
on the size of heat pump selected. This type of system can be
used for all possible building types, large or small, public or
private. It requires little space and the ground probe can be drilled
in the smallest of gardens.
Surface soil - using a surface collector
Cost-effective energy collection.
During the summer, solar heat is stored in the soil. This is
either directly absorbed as insulation or as heat from rain and
the air from the near-surface layer of the soil. The heat pump
collects this stored solar energy from a buried collector. That is,
a hose filled with anti-freeze, and buried at a depth of about
80 – 100 cm, the length of the hose varies between 250 and
400 metres, depending on the size of heat pump selected.
Using this energy for heating is a cost effective method. The
highest yield can be obtained from soil with a high water content.

F1345 is extremely efficient thanks to a highly effective compressor
in well dimensioned refrigerant circuits. Internally installed low
energy circulation pumps and flex hoses (not brine pump for 40
or 60 kW). The brine respectively heating medium circuits are
connected from the rear of the heat pump. Particle filter supplied.
The heat pump can be connected to an optional low temperature
distribution system. e.g. radiators, convectors or under floor
heating. F1345 is equipped with a control computer for optimum
and reliable operation. A large backlit TFT display shows
information about status, operating time and all temperatures in
the heat pump as well as certain information about any slave heat
pumps, in colour using icons and text. F1345 is constructed on a
robust frame with durable panels and effective soundproofing for
the best possible comfort. All panels are easy to remove for easy
access when installing and for servicing.
NIBE F1345 3
Evaporator
Heating medium supply
Heating medium supply
Brine in
Brine in
Brine out
Brine out
Heating medium return
Heating medium return
Condenser
* The brine pump (1 x) for 40 or 60 kW is supplied and installed externally
outside the heat pump.
Sleeve pipe
Brine to heat pump
Ground water level
Active borehole
(water column in
rock)
Brine from heat pump
40kW24-30kW 60kW40kW24-30kW 60kW
Circulation pump
Circulation pump
Expansion valveCooling module EP14
Cooling module EP15
Compressor
Compressor
Brine pump*
Brine pump*
F1345 consists of two heat pump modules (cooling module),
circulation pumps and control system with possibility of additional
heat. F1345 is connected to the brine and heating medium
circuits.
In the heat pump evaporator, the brine (water mixed with anti-
freeze, glycol or ethanol) releases its energy to the refrigerant,
which is vaporised in order to be compressed in the compressor.
The refrigerant, of which the temperature has now been raised,
is passed to the condenser where it gives off its energy to the
heating medium circuit and, if necessary, to any docked water
heater. If there is a greater need for heating/hot water than the
compressors can provide it is possible is to connect an external
immersion heater.
HOW DOES F1345 WORK?
Principle of operation

4 NIBE F1345
F1345 should be transported and stored vertically in a dry place.
When being moved into a building, F1345 may be leant back 45°.
NOTE! The heat pump is top heavy.
If the cooling modules are pulled out and transported upright,
F1345 can be transported on its back.
The side panels can be removed for easier installation in the
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
• Position F1345 on a firm base that can take the weight,
preferably on a concrete floor or foundation. Use the heat
pump’s adjustable feet to obtain a stable set-up.
• Install with its back to an outside wall, ideally in a room
where noise does not matter, in order to eliminate noise
problems. If this is not possible, avoid placing it against a
wall behind a bedroom or other room where noise may be
a problem.
• Wherever the unit is located, walls to sound sensitive rooms
should be fitted with sound insulation.
• Route pipes so they are not fixed to an internal wall that
backs on to a bedroom or living room.
(50) (50)
800
NOTE! Ensure that the heat pump cannot fall
over during transport.
LEK
* A normal installation needs 300 - 400 mm (any side) for connection
equipment, i.e. level vessel, valves and electrical equipment.
**
To simplify transport and service, the heat pump can be separated
by pulling the cooling module out from the cabinet.
See the installer manual for comprehensive instructions about the
separation.
Leave a space of 800 mm in front of the heat pump.
Approximately 50 mm free space is required on each side
in order to open the side hatches. The hatches do not need
to be opened during service, all service on F1345 can be
carried out from the front. There must be at least 300mm of
free space above the heat pump. Leave space between the
heat pump and wall behind (and any routing of supply cables
and pipes) to reduce the risk of reproduction of any vibration.
GOOD TO KNOW ABOUT NIBE F1345
Transport and storage Assembly
Drawing out the cooling module
Installation area

NIBE F1345 5
GOOD TO KNOW ABOUT NIBE F1345
Dimensions
Pipe dimensions
Connections
(XL1) Heating medium supply, external thread G2”
(XL2) Heating medium return, external thread G2”
(XL6) Brine in, external thread G2”
(XL7) Brine out, external thread G2”
EP14-XL1
EP15-XL1
EP14-XL2
EP15-XL2
EP14-XL7
EP15-XL7
EP14-XL6
EP15-XL6
1775
600
560 440
735
1555
1715
80 145 145 145
450620
820
85
25-50

6 NIBE F1345
LEK
LEK
AA2
AA26
EP14-XL1
EP15-XL1
AA3
EP14-XL2
EP14-PF2
EP15-PF2
EP15-XL2
EP15-FB1
SF1
AA4-XJ4
AA4-XJ3
AA4
AA4
XJ10
XJ3
X7
XJ6
XJ9
UB3
X1
AA7
K1
XJ8
XJ7
EP14-XL7
EP15-XL7
UB1
X8 K4 K3 K2/K5
FC1
EP14-XL6
EP15-XL6
PF3
PF1
UB2
XJ2
XJ8
XJ7
EP15
EP14
XJ1
XJ5
XJ4
FC1 UB1UB2UB3X2 X3 X4 X5 X6
GOOD TO KNOW ABOUT NIBE F1345
Equipment

NIBE F1345 7
Pipe connections
XL1 Connection, heating medium flow
XL2 Connection, heating medium return
XL6 Connection, brine in
XL7 Connection, brine out
HVAC components
EP14 Cooling module
EP15 Cooling module
Sensors etc.
BT 1 Outside sensor
Electrical components
AA2 Base card
AA3 Input circuit board
AA4 Display unit
AA4-XJ3 USB outlet (no function)
AA4-XJ4 Service outlet (No function)
AA7 Extra relay circuit board
AA26 Base card 2
FC1 Miniature circuit-breaker
K1 Emergency mode relay
K2 Relay, external circulation pump (only 40 and 60 kW)
K3 Relay, external circulation pump (only 40 and 60 kW)
K4 Relay, external circulation pump (only 40 and 60 kW)
K5 Relay (only 24 and 30 kW)
X1 Terminal block, incoming electrical supply
X2 Terminal block, non-return valve, external brine pump
(only 40 and 60 kW) and external operating voltage
(at tariff control)
X3 Terminal block, step controlled additional heat
X4 Terminal block, emergency mode relay
X5 Terminal block, common alarm
X6 Terminal block, communication, sensors and software
controlled inputs
X7 Terminal block, control signal external brine pump
(only 40 and 60 kW)
X8 Terminal blocks
XJ 1 Connector, electrical supply to compressor,
cooling module EP14
XJ 2 Connector, electrical supply to compressor,
cooling module EP15
XJ 3 Connector, cooling module EP14
XJ 4 Connector, brine pump, cooling module EP14
(only 24 and 30 kW)
XJ 5 Connector, heating medium pump, cooling module
EP14
XJ 6 Connector, cooling module EP15
XJ 7 Connector, brine pump, cooling module EP15 (only 24
and 30 kW)
XJ 8 Connector, heating medium pump, cooling module
EP15
XJ 9 Connector, cooling module EP15
XJ 10 Connector, cooling module EP14
SF 1 Switch
Miscellaneous
PF1 Rating plate
PF2 Type plate, cooling section
PF3 Serial number plate
UB1 Cable gland, incoming electricity
UB2 Cable gland, power
UB3 Cable gland, signal
Designations in component locations according to standard IEC 81346-1 and
81346-2.
GOOD TO KNOW ABOUT NIBE F1345

8 NIBE F1345
The pump is adjustable, the flow can be adjusted in menu
5.1.11.
24 kW 30 kW
100
90
80
70
60
50
40
100%
80%
60%
40%
30
20
10
0
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9
1,0
Eleffekt per cirkulationspump
W
Flöde, l/s
100
90
80
70
60
50
40
100%
80%
60%
40%
30
20
10
0
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9
1,0
Eleffekt per cirkulationspump
W
Flöde, l/s
90
80
70
60
50
40
100%
80%
60%
40%
100%
80%
60%
40%
30
20
10
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8
2,0
Externt tillgängligt tryck
kPa
2 cirkulationspumpar
1 cirkulationspump
Flöde, l/s
90
80
70
60
50
40
100%
80%
60%
40%
100%
80%
60%
40%
30
20
10
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8
2,0
Externt tillgängligt tryck
kPa
2 cirkulationspumpar
1 cirkulationspump
Flöde, l/s
LE
K
GP1
External available pressure, kPa External available pressure, kPa
Electrical output per circulation pump, W Electrical output per circulation pump, W
Heating medium side
2 circulation pumps
1 circulation pump
2 circulation pumps
1 circulation pump
Flow, l/s
Flow, l/s
Flow, l/s
Flow, l/s
GOOD TO KNOW ABOUT NIBE F1345
Pump capacity diagram

NIBE F1345 9
40 kW 60 kW
100
90
80
70
60
50
40
100%
80%
60%
40%
30
20
10
0
0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9
1,0
Eleffekt per cirkulationspump
W
Flöde, l/s
100
90
80
70
60
50
40
100%
80%
60%
40%
100%
80%
60%
40%
30
20
10
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8
2,0
Externt tillgängligt tryck
kPa
2 cirkulationspumpar
1 cirkulationspump
Flöde, l/s
100
90
80
70
60
50
40
100%
80%
60%
40%
30
20
10
0
0 0,2 0,4 0,6 0,8 1,0
1,2
Eleffekt per cirkulationspump
W
Flöde, l/s
100
90
80
70
60
50
40
100%
80%
60%
40%
100%
80%
60%
40%
30
20
10
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8
2,0
Externt tillgängligt tryck
kPa
Flöde, l/s
2 cirkulationspumpar
1 cirkulationspump
The pump is adjustable, the flow can be adjusted in menu
5.1.11.
LEK
GP1
External available pressure, kPa External available pressure, kPa
Electrical output per circulation pump, W Electrical output per circulation pump, W
2 circulation pumps
1 circulation pump
2 circulation pumps
1 circulation pump
Flow, l/s
Flow, l/s
Flow, l/s
Flow, l/s
GOOD TO KNOW ABOUT NIBE F1345

10 NIBE F1345
24 kW 30 kW
200
180
160
140
120
100
80
100%
80%
60%
40%
60
40
20
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4
Eleffekt per cirkulationspump
W
Flöde, l/s
120
100
80
60
40
100%
80%
60%40%
100%
80%
60%
40%
20
0
0 0,5 1,0 1,5 2,0
2,5
Externt tillgängligt tryck
kPa
Flöde, l/s
2 cirkulationspumpar
1 cirkulationspump
200
180
160
140
120
100
80
100%
80%
60%
40%
60
40
20
0
0 0,2 0,4 0,6 0,8 1,0 1,2 1,4
Eleffekt per cirkulationspump
W
Flöde, l/s
140
120
100
80
60
40
100%
80%
60%
40%
100%
80%
60%
40%
20
0
0 0,5 1,0 1,5 2,0
2,5
Externt tillgängligt tryck
kPa
2 cirkulationspumpar
1 cirkulationspump
Flöde, l/s
The pump is adjustable, the flow can be adjusted in menu
5.1.9.
LE
K
GP2
External available pressure, kPa External available pressure, kPa
Electrical output per circulation pump, W Electrical output per circulation pump, W
Brine side
2 circulation pumps
1 circulation pump
2 circulation pumps
1 circulation pump
Flow, l/s
Flow, l/s
Flow, l/s
Flow, l/s
GOOD TO KNOW ABOUT NIBE F1345
Pump capacity diagram