Nibe F1155 Series User manual

Service manual
LEK
F1155
Ground source heat pump
SEM GB 1609-1
M11934

Table of Contents
31 Important information
3Document information
3Safety information
52 The heat pump design
5General
6Electrical cabinets
7Cooling section
83 System description
8Principle of operation
12System diagram
144 Cooling circuit
14Outline diagram
14Compressor control
15Expansion valve
165 Component description
16Compressor (GQ10)
17Other components
20Sensors
21Electronics
246 Troubleshooting
24Alarm list
36Troubleshooting guide
49Function check, relays/components
527 Component replacement
52Basic
55Main components
66Circuit board and electronics
72Temperature sensor
738 Technical data
73Electrical wiring diagram F1155
97Dimensions and setting-out coordinates
98Technical specifications
104Index
F1155Chapter |2

Document information
This technical manual is a complement to the Installer
handbook for F1155, containing:
■Description of functions and component description.
■Information to facilitate fault-tracing.
■Instructions for replacing components.
■Supplementary technical information.
The document applies to heat pumps with software
versions from 4665R3 up to and including 7312R3.
The heat pump software version can be found in the
info menu (menu 3.1).
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 2016.
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
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.
Serial number
The serial number can be found at the bottom right of
the front cover and in the info menu (menu 3.1).
You can also find the serial number on the type plate
PF1, for location see the section for the Heat pump
design in the installer manual.
Serial number
Caution
Always give the product's serial number (14
digits) when reporting a fault.
3Chapter 1 | Important informationF1155
1 Important information

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.
F1155Chapter 1 | Important information4

General
F1155
UB1
EB1
QM34
QM31
UB2
QM32
QM33
XL1
XL6 XL7
XL2XL9
QN10
PF1
PF2
BT2
UB3
AA4
AA4-XJ3
AA4-XJ4
SF1
W130
RA3
View from behind
BF1
Pipe connections
Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, brine inXL 6
Connection, brine outXL 7
Connection, hot water heaterXL 9
HVAC components
Shut-off valve, heating medium flowQM 31
Shut off valve, heating medium returnQM 32
Shut off valve, brine outQM 33
Shut-off valve, brine inQM 34
Shuttle valve, climate system/water heaterQN 10
Sensors etc.
Flow meter (EU models)BF 1
Outdoor temperature sensor (externally
mounted)
BT 1
Temperature sensors, heating medium flowBT 2
Electrical components
Display unitAA 4
AA4-XJ3 USB outlet (no function)
AA4-XJ4 Service outlet (No function)
Immersion heaterEB 1
SwitchSF 1
Network cable for NIBE UplinkTM W130
Miscellaneous
Type plate, serial no.PF 1
Type plate, cooling sectionPF 2
Cable gland, incoming electricityUB 1
Cable glandUB 2
Cable gland, rear side, sensorUB 3
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
5Chapter 2 | The heat pump designF1155
2 The heat pump design

Electrical cabinets
F1255
FD1
AA1
FA1
AA3
AA2AA23
Electrical components
Immersion heater cardAA 1
Base cardAA 2
Input circuit boardAA 3
Communication boardAA23
Miniature circuit-breakerFA 1
Temperature limiter/Emergency mode thermo-
stat
FD 1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
F1155Chapter 2 | The heat pump design6

Cooling section
F1255-6
LEK LEK
BT10
AA100
BT3
QM2
GP1
GP2
QM1
BT11
BT12
LEK LEK
EP2
BT14
QA40
BP2
BT15
BP1
EB10
BT17
EP1
GQ10
HS1
XL20
QN1
XL21
RA1
CA1
F1255-16
LEK
BT10
AA100
BT11
BT3
BT12
GP1
GP2
QM1
QM2
RF2
LEK
EP2
BT14
BT17
EP1
BP2
BT15
BP1
GQ10
HS1
XL20
QN1
EB10 XL21
QA40
Pipe connections
Service connection, high pressureXL 20
Service connection, low pressureXL 21
HVAC components
Circulation pumpGP 1
Brine pumpGP 2
Drainage, climate systemQM 1
Draining, brine sideQM 2
Sensors etc.
High pressure pressostatBP 1
Low pressure pressostatBP 2
Temperature sensors, heating medium returnBT 3
Temperature sensor, brine inBT 10
Temperature sensor, brine outBT 11
Temperature sensor, condenser supply lineBT 12
Temperature sensor, hot gasBT 14
Temperature sensor, fluid pipeBT 15
Temperature sensor, suction gasBT 17
Temperature sensor, compressorBT 29
Electrical components
Joint cardAA 100
Compressor heaterEB 10
EMC-filterRF 2
InverterQA 40
Cooling components
EvaporatorEP 1
CondenserEP 2
CompressorGQ 10
Drying filterHS 1
Expansion valveQN 1
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
7Chapter 2 | The heat pump designF1155

Principle of operation
KBinVBf VBrVV KBut
XL1 XL6 XL9 XL7 XL2
BP2
BT3
BT12 BT10
BT17
BT15 BP1 BT11
BT14
EP1
EP2
GQ10
GP2
QM32
QM33
QW1
GP1
QM31
QM34
QN10
List of components
Pipe connections
Connection, heating medium flowXL 1
Connection, heating medium returnXL 2
Connection, brine inXL 6
Connection, brine outXL 7
Connection, hot water heaterXL 9
Cooling components
EvaporatorEP 1
CondenserEP 2
CompressorGQ 10
Expansion valveQN 1
HVAC components
Circulation pumpGP 1
Brine pumpGP 2
Shut-off valve, heating medium flowQM 31
Shut off valve, heating medium returnQM 32
Shut off valve, brine outQM 33
Shut-off valve, brine inQM 34
Shuttle valve, climate system/water heaterQN 10
F1155Chapter 3 | System description8
3 System description

Sensors etc.
Internal
FunctionLocationName
Protects the compressor against pres-
sures that are too high.
On the liquid line.High pressure pressostatBP1
Protects the compressor against pres-
sures that are too low.
On suction gas line.Low pressure pressostatBP2
Set point values for heating and cool-
ing demand calculation. Operating
mode change.
Outdoor, shaded location on north side
of the house.
Outside sensorBT1*
Calculation of DM. If BT25 is installed,
only view.
On supply line after immersion heater
(EB1).
Flow pipeBT2
Stopping the compressor at high tem-
perature.
On return line between circulation
pump (GP1) and condenser (EP2).
Return pipeBT3
Stop and start of hot water charging.On water heater lower section.Hot water, chargingBT6*
Also used for display if BT7 is not in-
stalled.
View.At water heater peak.Hot water, topBT7*
View.On incoming brine line before circula-
tion pump (GP2).
Brine inBT10
Stops compressor at high temperature.
Controls brine pump speed together
with BT11
Stopping the compressor at low tem-
perature.
On outgoing brine line after evaporator
(EP1).
Brine outBT11
Controls brine pump speed together
with BT10
Stopping the compressor at high tem-
perature.
On supply line between condenser
(EP2) and immersion heater (EB1).
Condenser flow lineBT12
Stopping the compressor at high tem-
perature.
On hot gas line after compressor
(GQ10).
DischargeBT14
View.On the liquid line after the condenser
(EP2).
Fluid pipeBT15
View.On suction gas line before the com-
pressor (GQ10).
Suction gasBT17
Calculation of DM. Actual value for ad-
ditional shunt.
Externally on the flow line to the heat-
ing system.
External flow lineBT25*
Correction of the indoor temperature.In suitable indoor location.Room sensorBT50*
* Externally mounted (not included in outline diagram).
9Chapter 3 | System descriptionF1155

External
FunctionLocationName
Stop and start of pool charging.On pool water pipe in heat exchanger.Pool sensorCL11-BT51
In relation to BT54, stop and start of
solar charging.
On the solar panelSolar panel sensorEP30-BT53
In relation to BT53, stop and start of
solar charging.
On solar tank bottomSolar tank, bottomEP30-BT54
Closes additional heat mixing valve
when boiler is cold.
In additional heat boilerBoiler sensorEM1-BT52
Actual value for mixing valve cooling
(EQ1-QN18)
On flow line, coolingFlow line, coolingEQ1-BT64
ViewOn return line, coolingReturn line, coolingEQ1-BT65
Actual value for mixing valve, climate
system 2.
On flow line to extra climate system 2.Flow line, extra climate
system
EP21-BT2
View.On return line from extra climate sys-
tem 2.
Return line, extra climate
system
EP21-BT3
Actual value for mixing valve, climate
system 3.
On flow line to extra climate system 3.Flow line, extra climate
system
EP22-BT2
View.On return line from extra climate sys-
tem 3.
Return line, extra climate
system
EP22-BT3
Actual value for mixing valve, climate
system 4.
On flow line to extra climate system 4.Flow line, extra climate
system
EP23-BT2
View.On return line from extra climate sys-
tem 4.
Return line, extra climate
system
EP23-BT3
Actual value for shunt valve, climate
system 5.
On supply line to extra climate system
5.
Flow line, extra climate
system
EP24-BT2
ViewOn return line from extra climate sys-
tem 5.
Return line, extra climate
system
EP24-BT3
Actual value for shunt valve, climate
system 6.
On supply line to extra climate system
6.
Flow line, extra climate
system
EP25-BT2
ViewOn return line from extra climate sys-
tem 6.
Return line, extra climate
system
EP25-BT3
Actual value for shunt valve, climate
system 7.
On supply line to extra climate system
7.
Flow line, extra climate
system
EP26-BT2
ViewOn return line from extra climate sys-
tem 7.
Return line, extra climate
system
EP26-BT3
Actual value for shunt valve, climate
system 8.
On supply line to extra climate system
8.
Flow line, extra climate
system
EP27-BT2
ViewOn return line from extra climate sys-
tem 8.
Return line, extra climate
system
EP27-BT3
View.In exhaust air in FLM.Exhaust airAZ1-BT20
F1155Chapter 3 | System description10

FunctionLocationName
Controls defrostingIn extract air in FLM.Extract airAZ1-BT21
View.On incoming collector line in FLM.Collector inAZ1-BT26
View.On outgoing collector line in FLM.Collector outAZ1-BT27
11Chapter 3 | System descriptionF1155

System diagram
Heating
-QM31
-QM32
-FL3
-QM42
-QM12
-CM2
-HQ1
-QM34
-XL15
-BT1
-EB100
F11XX
-FL2
-CM1
-BT6
-CP1
-EP12
Function
The heat pump prioritises hot water charging. The circulation pump GP1 runs at a calculated speed. When the water
heater is fully charged QN10 switches to the heating system. The heat pump works to a calculated set point value
on the supply line. If the compressor cannot meet the whole heating requirement, electric heat is shunted in as ne-
cessary.
TIP
More system principles are on www.nibe.eu.
Refer to the Installer manual for description
of possible docking alternatives.
F1155Chapter 3 | System description12

Installation requirements
Heating medium side
16kW6kW
4,5BarMax system pressure
0.150.06l/sMin. flow** (50 Hz)
0.220.08l/sNominal flow (50 Hz)
0.300.10l/sMax. recommended flow, (50 Hz)
7169kPaMax. external available pressure at nominal flow*** (50 Hz)
See diagram
page 102.
°CMin/max temperature
* min volume refers to circulating flow
** overflow valve must be used if min flow cannot be guaranteed
*** external circulation pump must be used when the pressure drop in the system is greater than the available ex-
ternal pressure. In such cases, a bypass line with non-return valve must be installed.
Brine side
16kW6kW
4,5BarMax system pressure
0.360.13l/sMin. flow (50 Hz)
0.510,18l/sNominal flow (50 Hz)
9564kPaMax. external available pressure at nominal flow (50 Hz)
See diagram page 103.°CMax/min incoming temperature
13Chapter 3 | System descriptionF1155

Outline diagram
Köld-
bärare
Bulb
LP
HP
Förångare
Kompressor
Högtrycks-
pressostat
Vätske-
ledningsgivare
Hetgasgivare
Lågtrycks-
pressostat
Exp.-
ventil
Tork-
filter
Kondensor
Värme-
bärare
Condenser
Evaporator
Brine Heating
medium
Exp. valve
Compressor
Drier
filter
Bulb
Hot gas sensor
High pressure pressostat
Fluid line sensor
Low pressure pressostat
Compressor control
blockFreq
■2x selectable blockFreq (5.1.24) with blocking range
3-50Hz.
RemarksFactory settingsModel
91-120Hz6Kw
-16Kw
Hot gas limit BT 14
16Kw6Kw
135C120°CThe compressor
is stopped. Alarm
55
130°C110°CReduces the
compressor's fre-
quency by 5
Hz/min.
125°C107°CIncrease of com-
pressor fre-
quency blocked
>
Return to free
control of the
compressor <
High pressure pressostat
Stop with automatic restart:
■The compressor stops when the pressure is 32 bar,
and restarts automatically when the pressure is below
25 bar.
Stop with manual restart missing.
Reconnection
differential
StopCompressor
-7 bar32 bar16 kW
-7 bar32 bar6 kW
Low pressure pressostat
Stop with manual restart:
■The compressor stops when the pressure is below
1.5 bar, and can restart when the pressure is above
3 bar.
Reconnection
differential
StopCompressor
1.5 bar1.5 bar16 kW
1.5 bar1.5 bar6 kW
The function is blocked for 1 minute after switching
between charging type (HW, heating, pool).
Working area
See diagram page 102.
F1155Chapter 4 | Cooling circuit14
4 Cooling circuit

Time conditions
Minimum time between stop and start is 5 min.
Minimum time from start to stop to start is 20 min.
Compressor heater
The compressor heater is active when relay (K4) on the
base card is in unaffected mode.
When the compressor is inactive the compressor
heater is always active.
Expansion valve
Check that overheating occurs by measuring the vapour
temperature with a manometer and the suction gas
temperature with a service thermometer. The suction
gas temperature is measured on the suction pipe at
the entrance to the compressor.
Overheating is shown in the table below and must be
checked when the compressor frequency is 30 - 90 Hz
and when the temperature of the heating medium
supply is 30 - 55 °C and brine in is -5 - +10 °C.
Brine temperatures higher than +10 °C in combination
with high compressor frequency (Hz) can cause greater
overheating.
superheatF1155
4 - 8 °C6 kW
4 - 8 °C16 kW
15Chapter 4 | Cooling circuitF1155

Compressor (GQ10)
3x230V,1x230V,3x400V
Resistance range (Ω at 20 °C +/- 10 %)TypeSize (kW)
T2-T3[S-R]T1-T2[C-S]T1-T3[C-R]
0.720.720.72Rotation6
3 x 400 V
Resistance range (Ω at 20 °C +/- 10 %)TypeSize (kW)
T2-T3[S-R]T1-T2[C-S]T1-T3[C-R]
5.195.195.19Piston16
F1155Chapter 5 | Component description16
5 Component description

Other components
DescriptionComponent
F1255-16, 3x400 VImmersion heater (EB1)
White coil (1/3 kW), internal resistance: 55 ohm
Brown coils (3 x 2 kW), internal resistance: 27 ohm
F1255-6, 1x230V,3x230V,3x400V
White coil (2 kW), internal resistance 27 ohm
Red coil:
■1 x 230 V: (1 kW), internal resistance 55 ohm
■3 X 230 V: (1 kW), internal resistance 55 ohm
■3 x 400 V: (3 kW), internal resistance 55 ohm
Brown coil (1 kW), internal resistance 55 ohm
Black coil (0.5 kW), internal resistance 110 ohm
Actuator motor: 7 VA, 230/24 VAC, 50 Hz, IP 40. Running time approx 8 secondsReversing valve (QN10)
Max. operating pressure: 1.0 MPa
Operating temperature: 5 - 80 °C (90 °C briefly)
56 56 B
30
54
106
142
A
F1255-16F1255-6
Ø28 mmØ22 mmA
Ø28 mmØ22 mmB
17Chapter 5 | Component descriptionF1155

DescriptionComponent
F1255-16Heating medium pump
(GP1) UPM GEO 25-85. Operating voltage 1x230 V, max 70 W
Control signal: PWM 0 - 10 V DC (max-min speed)
Max flow: 8.5 m3/h
Max lift height: 5 m.
F1255-6
UPM2 25-70. Operating voltage 1x230 V, max 63 W
Control signal: PWM 0 - 10 V DC (max-min speed)
Max flow: 5 m3/h
Max lift height: 7 m.
G 1⁄ ’’
G 1⁄ ’’
180
135,3
109,3
F1155Chapter 5 | Component description18

DescriptionComponent
F1255-16Brine pump (GP2)
UPM XL –Geo 25-125. Operating voltage 1*230 V, max 180 W
Control signal: PWM 0 - 10 V DC (max-min speed)
117
10438 50
180
G 1⁄ ’’
F1255-6
UPM GEO 25-85. Operating voltage 1x230 V, max 70 W
Control signal: PWM 0 - 10 V DC (max-min speed)
Max flow: 8.5 m3/h
Max lift height: 5 m.
G 1⁄ ’’
G 1⁄ ’’
180
145
Breaking value: 32 barHigh pressure switch (BP1)
Reconnection differential: -7 bar
Breaking value: 1.5 barLow pressure switch (BP2)
Reconnection differential: 1.5 bar
Output (5-10): 30 WCompressor heater
19Chapter 5 | Component descriptionF1155

Sensors
Temperature sensor data
Voltage (VDC)Resistance
(kOhm)
Temperature
(°C)
3.256351.0-40
3.240251.6-35
3.218182.5-30
3.189133.8-25
3.15099.22-20
3.10574.32-15
3.04756.20-10
2.97642.89-5
2.88933.020
2.78925.615
2.67320.0210
2.54115.7715
2.39912.5120
2.24510.0025
2.0838.04530
1.9166.51435
1.7525.30640
1.5874.34845
1.4263.58350
1.2782.96855
1.1362.46760
1.0072.06865
0.8911.73970
0.7851.46975
0.6911.24680
0.6071.06185
0.5330.90890
0.4690.77995
0.4140.672100
0.2500.380120
0.1200.180150
F1155Chapter 5 | Component description20