Nibe AG-AC10-42 User guide

Installer manual
AG-AC10
Air/air heat pump
IHB GB 1615-2
M11862

Table of Contents
41 Important information
4Safety information
5Read before starting the installation
5Electrical requirements
62 Delivery and handling
6Transport
6Assembly
6Supplied components
73 Pipe connections
7General
7Connecting the cooling circuit
8Pipe connections
94 Electrical connections
9General
9Communication cable
9Connecting indoor and outdoor unit
10Connecting accessories
115 Installation
11Compatible model combinations
11Installation instructions
15Pump down
166 The main functions of the valves
177 Disturbances in comfort
17Troubleshooting
188 Accessories
199 Technical data
19Dimensions
20Technical specifications
21Electrical circuit diagram
22Index
3Table of Contents |AG-AC10

Safety information
This manual describes installation and service procedures
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 under-
stand 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 2016.
Symbols
NOTE
This symbol indicates danger to machine or
person.
Caution
This symbol indicates important information
about what you should observe when maintain-
ing your installation.
TIP
This symbol indicates tips on how to facilitate
using the product.
Marking
AG-AC10 is CE marked and meets IPX4.
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 obligatory for
most products sold in the EU, regardless where they are
made.
IPX4 means that the product is protected against drops
of water from all angles.
Recovery
Information regarding the correct recycling of the
product in accordance with the EU directive
2012/19/EU
Do not dispose of used units with normal
household waste. It must be disposed of at a
special waste station or dealer who provides
this type of service.
Separate waste sorting of an electrical and
electronic device makes it possible to prevent adverse
effects on the environment and human health, which
may occur from inappropriate waste sorting and this
also makes it possible to reuse and recycle the material,
which leads to a considerable saving of energy and re-
sources.
To emphasize the need for waste sorting and separate
handling of these units, there is a symbol of a crossed-
out waste bin on the product.
Improper disposal of the product by the user results in
administrative penalties in accordance with current legis-
lation.
Environmental information
This unit contains a fluorinated greenhouse gas that is
covered by the Kyoto agreement.
F-Gas Regulation (EU) No. 517/2014
The equipment contains R410A, a fluorinated green-
house gas with a GWP value (Global Warming Potential)
of 2087.50. DO not release R410A into the atmosphere.
AG-AC10Chapter 1 | Important information4
1 Important information

Safety precautions
NOTE
■Avoid the use and storage of flammable li-
quids near the climate unit.
■Never install electric equipment that does not
have IPX1 protection (protection against ver-
tical water drops), under the unit.
The manufacturer assumes no liability, if safety the
standards or protection preventive measures are not
complied with.
Special safety measures
During installation the cooling circuit must be connected
first and then the electrical circuit. Perform in reverse
order when removing the unit.
During repair
■Disconnect the voltage (via the main switch) before
opening the unit to check or repair the electrical parts.
■Keep hands and clothing away from moving parts.
■Clean after completing the work, and check that no
metal residue or cable parts have been left inside the
unit.
■Vent the premises during the installation and the
cooling circuit test. Ensure that no refrigerant gas has
leaked out during the installation, as contact with na-
ked flames or heat sources can be toxic or dangerous.
Read before starting the
installation
This heat pump complies with strict safety and function
standards.
It is very important that the installer or the service tech-
nicians install or repair the system so that it works safely
and efficiently.
For a safe installation and good function the
following is required:
■Read this instruction manual carefully before starting
installation.
■Follow the installation and safety instructions exactly
as described and shown.
■Comply with local and national electrical regulations.
■Note all the warning and safety messages indicated
in this manual.
■The unit must be connected to a separate supply.
These instructions are sufficient for installation and
maintenance. If assistance is required for a particular
problem, contact our dealer for further information.
NIBE does not accept any responsibility for damage that
occurs in the event of incorrect installation or improper
maintenance.
Electrical requirements
NOTE
The electrical discharge can cause serious per-
sonal injury or death. Only qualified electricians
may handle the electrical system.
■Before installation ensure that the mains supply for
the power supply is the same as that indicated on the
climate unit's rating plate.
■Each unit must be connected with approved grounded
cable.
■The electrical connections must be performed by a
specially trained and qualified electrician.
■Ensure a ground connection before the unit is
powered.
■Hazardous electrical voltage is used in this electrical
circuit. See electrical wiring diagram and its instructions
below the connection. Incorrect connections or unsuit-
able ground connection can cause accidents or death.
■The yellow/green cable must not be used for connec-
tions other than ground.
■Tighten the cables securely. Incorrect connections can
cause overheating and fire.
■Electrical cables must not come into contact with the
cooling pipes, the compressor or fan's moving parts.
■Use separate cables for each type of cable.
5Chapter 1 | Important informationAG-AC10

Transport
The outdoor unit should be transported and moved
vertically.
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
Take care when lifting and moving the indoor and out-
door units. We recommend that you ask for assistance
and bend your knees when you lift to avoid injuring your
back.
Assembly
We recommend that this climate unit be installed by an
authorised technician in accordance with the supplied
installation instructions.
NOTE
■Do not install this climate unit where there
are flue gases, flammable gases or a lot of
moisture, e.g. in a greenhouse.
■Do not install this climate unit where there is
equipment that generates too much heat.
■Do not install the unit in premises where it
may be subjected to water splashes (e.g.
laundry rooms).
■To protect the climate unit from corrosion,
the unit must not be installed where it can be
directly exposed to seawater splashes or sul-
phur fumes.
Selection of installation location for outdoor
unit
During installation...
■...in damp or uneven locations:
Use a base that is stable and raised above the ground
to prevent damage and abnormal vibrations.
■...in locations exposed to strong winds:
Secure the unit with bolts and metal frame. Ensure
that there is suitable wind protection.
■...in locations susceptible to snowfall (for climate units
with heat pump):
The concrete foundation or slabs must be positioned
so that the lower edge of the evaporator is at the level
of the average local snow depth, however a minimum
of 300 mm.
Prevent the following:
■proximity to heat sources or to areas where hot air is
blown out.
■Installation on wooden wall, because there is a risk of
resonance.
■damp areas or easily flooded areas and uneven sur-
faces.
■to drill holes in the areas where there are electrical
parts or units.
The following is recommended:
■If possible, select well-ventilated, shaded areas.
■Secure the unit securely at the base to prevent vibra-
tions.
Installation area
Minimum working and maintenance range (measured
in mm):
100 500
2000
2000
400
300
100
100 500
2000
2000
400
300
100
Supplied components
Transition nipple
from 3/8" to 1/2"
AG-AC10Chapter 2 | Delivery and handling6
2 Delivery and handling

General
Pipe installation must be carried out in accordance with
current norms and directives.
Only use refrigerant pipes that are seamless, degreased,
deoxidized and suitable for a pressure of at least 42 bar.
The pipes must be supplied with at least 8 mm vapour-
proof insulation.
H1
H1
H2
H2
H1 = Height max 10 m
H2 = Height max 5 m
AG-AC10-42Pipe length
Total length
1.5 mThe refrigerant pipes' minimum length
7.5 mThe refrigerant pipes' maximum total
length with standard filling
20 mThe refrigerant pipes' maximum total
length with additional filling1
AG-AC10-50Pipe length
Max.
pipe
length
for one
indoor
unit
Total
length
1.5 mThe refrigerant pipes' minimum
length
12 m15 mThe refrigerant pipes' maximum
total length with standard filling
25 m30 mThe refrigerant pipes' maximum
total length with additional filling1
1Additional filling of refrigerant can be done when the unit is
running in cooling operation: For refrigerant pipe 1/4" - 3/8" = 15
g/m. For refrigerant pipe 1/4" - 1/2" = 20 g/m.
For information about pipe dimensions, see section
"Technical Specifications" on page 20.
Condensation drain
For condensation removal, the AG-CH10 accessory of
suffient length is required to transport the condensation
to an external drain. See section "Accessories" on page
18 for further information about AG-CH10.
Connecting the cooling circuit
■Use the flare method to connect the pipes.
■Keep all pipework as short as possible.
■Lubricate the contact surfaces and hand tighten, then
tighten the connections using a torque wrench to ob-
tain a good and secure connection. See the installation
instructions on page 12.
■Check carefully that there is no risk of any leakage
prior to the function test.
NOTE
Pipework for gas is shown as wide pipes and
pipework for liquid is shown as narrow pipes.
7Chapter 3 | Pipe connectionsAG-AC10
3 Pipe connections

Pipe connections
AG-AC10-42 + one indoor unit
Size A
AG-AC10-42 / AG-AC10-50 + one indoor unit
Size B
AG-AC10-42 / AG-AC10-50 + two indoor units
Size A
Size A
AG-AC10-50 + two indoor units
Size A
Size B
Explanation
Indoor unit
AG-WT10-4 / AG-WL10-4Size A
AG-WT10-7 / AG-WL10-7Size B
AG-AC10Chapter 3 | Pipe connections8

General
NOTE
Electrical installation and service must be carried
out under the supervision of a qualified electri-
cian, and in accordance with applicable electrical
safety regulations.
■If a miniature circuit-breaker is used this must have
motor characteristic "C" (compressor operation). For
other fuse sizes, see section "Technical Specifications"
on page 20.
■AG-AC10 does not include an omnipolar circuit
breaker on the incoming power supply. The heat
pump’s supply cable must be connected to a circuit
breaker with a breaking gap of at least 3 mm. When
the building is equipped with an earth-fault breaker
the heat pump should be equipped with a separate
one. Incoming supply must be 230 V ~ 50 Hz via elec-
trical distribution units with fuses.
■If an insulation test is to be carried out in the building,
disconnect the heat pump.
Communication cable
H05VVC4V5-K 2x0.75 or similar screened cable must be
used.
Connecting indoor and outdoor
unit
Installation with one indoor unit
L
C2
N
C1
L
N
C2
C1
L
N
L
N
A
B
Indoor unit
C
Outdoor unit
Rated voltage
230V ~ 50Hz
Installation with two indoor units
L
C2
N
C1 N
C2
C1
L
N
L
N
L
C2
N
C1
L
Rated voltage
230V ~ 50Hz
Outdoor unitIndoor unit
Indoor unit
A
B
B
C
C
Explanation
Power supply cableA
Communication cableB
Connection cableC
9Chapter 4 | Electrical connectionsAG-AC10
4 Electrical connections

Connecting accessories
The outdoor unit is equipped for connection of a con-
densation water pipe (AG-CH10). Connect the power
supply to AG-CH10 as illustrated:
GREY
WHITE
GREEN/YELLOW
AG-CH10
Caution
Also see the Installer manual for AG-CH10.
AG-AC10Chapter 4 | Electrical connections10

Compatible model combinations
Our recommended model combinations are as follows.
Installation with one indoor unit
Indoor unit (circuit A)Outdoor unit
AG-WT10-4 / AG-WL10-4
AG-AC10 -42 AG-WT10-7 / AG-WL10-7
AG-WT10-7 / AG-WL10-7AG-AC10 -50
Installation with two indoor units
Indoor unit (circuit B)Indoor unit (circuit A)Outdoor unit
AG-WT10-4 / AG-WL10-4AG-WT10-4 / AG-WL10-4AG-AC10 -42
AG-WT10-4 / AG-WL10-4AG-WT10-4 / AG-WL10-4
AG-AC10 -50 AG-WT10-7 / AG-WL10-7AG-WT10-4 / AG-WL10-4
Installation instructions
1. Place the outdoor unit on a stable base raised above
the ground and secure it.
TIP
When installing stand, install screws down-
ward to facilitate removal of the front panel.
100
300
400
2. Hole for connecting the accessory AG-CH10.
3. Remove the side panel, then connect the supply and
communication cables to the outdoor unit and se-
cure them with load relief.
11Chapter 5 | InstallationAG-AC10
5 Installation

4. Use insulated copper cooling pipes. Cut a length of
30 – 50 cm in addition to the distance between the
units.
min. 8 mmmin. 8 mm
Insulation
5. Remove burrs from the pipe ends. Turn the pipe ends
downwards to prevent residue entering the pipe.
6. Thread the flange nuts (which are removed from the
outdoor unit) on the pipes and bend up the ends of
the pipes.
NOTE
Only use tools intended for R410A
7. A good upward bend must have the following
properties:
■a smooth and even inner surface
■a uniform and even outer edge
■a conical upward bend of uniform length.
Lubricate the contact surfaces with compressor oil
before connecting the pipes.
3 mm 45 °
Lubricate!
AG-AC10Chapter 5 | Installation12

8. Tighten the connections using a wrench and torque
wrench according to the tightening torque values
in the table.
Tightening torquePipe diameter
Approx. 15 – 20 Nm6.35 mm (1/4")
Approx. 30 – 40 Nm9.52 mm (3/8")
Approx. 50 – 55 Nm12.7 mm (1/2")
9. Insulate the pipes thoroughly and keep the pipe
connections free for leak testing.
10. For vacuuming of the indoor unit and refrigerant
pipe, connect the vacuum pump to the outdoor unit
as illustrated.
NOTE
Remaining air or damp affects the heat
pump's function negatively and can damage
the product.
INDOOR UNIT
INDOOR UNIT
Indoor unit
Indoor unit
11. Remove the valve caps from both valves. Start the
vacuum pump and allow it to run for the time given
in the table. If damp air has entered the cooling
pipes, flush through with dry nitrogen.
Low pressure
High pressure
Capacity vacuum pump 100l/h
10 min or morePipe length ≤ 10 m
15 min or morePipe length ≥ 10 m
13Chapter 5 | InstallationAG-AC10

12. With the vacuum pump running, close the low
pressure knob on the valve block. Stop the vacuum
pump. Open the service valve using an Allen key and
close it again after 10 seconds. Check the seal of all
joints using soap solution.
13. Open the service valves fully (anti-clockwise direc-
tion). Disconnect the vacuum pump. Reinstall the
caps on the valves, tighten to a torque of 20 Nm.
Leak trace caps and connections using a sniffer or
leak spray. See page 16 for the valves' main func-
tions. Repeat steps 10-13 if you have more indoor
units. The indoor units must be marked with "indoor
unit A" and "indoor unit B".
14. Complete insulation, protect against mechanical
impacts, secure and hang up.
15. Caution
The cooling circuit addresses must be set
before the system is started. The settings
must be made for each of the system's in-
door units. See the Installer Manual for the
specific indoor unit.
Outdoor unit Indoor unit
Address A
Address B
AG-AC10Chapter 5 | Installation14

Pump down
Pump down means retrieving all refrigerant in the out-
door unit without losing the system's filling. This is done
when the climate unit is to be moved or during repair
of the cooling circuit.
Procedure for "Pump down":
1. Connect a manometer assembly to the low pressure
valve, open partially (1/4 turns). Extract air from the
manometer. Then close the high pressure valve fully.
2. Start the climate unit in cooling mode. When the
pressure that is read out from the manometer has
dropped to a value less than 0.6 bar (absolute pres-
sure), the low pressure valve must be closed fully
and the climate unit switched off.
3. Remove the manometer assembly. The action "Pump
down" is now complete and all refrigerant has been
collected in the outdoor unit.
15Chapter 5 | InstallationAG-AC10

3-way valve (service valve)2-way valve (service valve)Action
Valve cap
Cone
O-ring
CLOSED
Delivery
OPEN
Function and test of
the climate unit
*
OPEN
Pressure measurement and gas filling
*
CLOSED
Vacuuming with vacuum pump
*
The service valve on the outdoor unit that gives access
to the refrigerant system is of the "Schrader" type. Use
hoses that have a Schrader opener in the connection.
AG-AC10Chapter 6 | The main functions of the valves16
6 The main functions of the valves

Troubleshooting
NOTE
Work behind covers secured by screws may only
be carried out by, or under the supervision of,
a qualified installation engineer.
NOTE
As AG-AC10 can be connected to several differ-
ent indoor units, these should also be checked.
NOTE
In the event of action to rectify malfunctions
that require work within screwed hatches, the
incoming supply electricity must isolated at the
safety switch.
Basic actions
Start by checking the following possible fault sources:
■That the climate unit is running or that the supply cable
to AG-AC10 is connected.
■Group and main fuses of the accommodation.
■The property's earth circuit breaker.
Fault codes
Caution
Remove the side panel that protects the termin-
al blocks to read off the LEDs. See page 11.
Key to symbols
The LED is off.
The LED flashes.
CauseDL7DL6DL5DL4DL3
Mixed up pipes.
Defective or disconnected temp. sensor liquid pipe circuit B.
Defective or disconnected temp. sensor liquid pipe circuit A.
Defective or disconnected temp. sensor gas pipe circuit B.
Defective or not connected temp. sensor gas pipe circuit A.
Compressor sensor defective or not connected.
Outdoor temperature sensor defective or not connected.
Evaporator sensor defective or not connected.
Overcurrent compressor.
The compressor's control electronics have overheated.
Overcurrent on fan.
The fan's control electronics have overheated.
Phase monitor tripped.
Fault in indoor unit A-B
Communication fault in indoor unit A-B
DL3 is lit with a steady light if all indoors units are func-
tioning correctly, but are switched off. DL3 and DL4 are
lit with a steady light if at least one indoor unit is run-
ning..
17Chapter 7 | Disturbances in comfortAG-AC10
7 Disturbances in comfort

Condensation water pipe
Condensation water pipe for leading condensation to ex-
ternal drain.
AG-CH10-30
Length: 3000 mm
Part no. 067 467
AG-CH10-10
Length: 1000 mm
Part no. 067 466
AG-CH10-60
Length: 6000 mm
Part no. 067 468
Ground stand
Ground stand AG-GS10-1
For installation on ground.
Part no. 067 460
GSM module AG-BU10
With AG-BU10 you can control the indoor unit via your
mobile phone.
Part no. 067 449
Wall mounting
Wall mounting AG-WS10-1
For installation on walls.
Part no. 067 462
AG-AC10Chapter 8 | Accessories18
8 Accessories

Dimensions
AG-AC10-42/50
895
830
53815337
285
360
307
615 630
19Chapter 9 | Technical dataAG-AC10
9 Technical data

Technical specifications
AG-AC10-50AG-AC10-42
Output data
840 / 59001020 / 4310WCooling capacity +35°C1) / 27/19°C2), min/max
950 / 6000940 / 5150WHeating capacity +7/6 °C1) / +20 °C2), min/max
39303030WHeating capacity -7°C / -8°C1) / +20 °C2), max
37302900WHeating capacity -10°C/-11°C 1) / +20 °C2), max
32702400WHeating capacity -22°C/-23°C1) / +20 °C2), max
5400 W/6.36/A++4300 W/6.52/A++Pdesignc/SEER/Energy class (cooling +35 °C)3)
4290 W/4.01/A+3420 W/4.09/A+Pdesignh/SCOP/Energy class (heat -10 °C)3)
Electrical data
230 V ~ 50 HzRated voltage
1790 / 7.80W/AMax. specified power/operating current
10AFuse
Refrigerant circuit
R410AType of refrigerant
Twin rotaryType of compressor
1.3kgVolume
Pipe connections
6.35 (1/4")mm
(inches)
Pipe connection (liquid)
9.52 (3/8")*mm
(inches)
Pipe connection (gas)
0.8mmMin. thickness refrigerant pipe
Recommended working range 4)
-20 / 50°CMin/max outdoor temp. during cooling
10 / 32°CMin/max indoor temp. during cooling
-32 / 24°CMin/max outdoor temp. during heating
0 / 27°CMin/max indoor temp. during heating
Miscellaneous
57kgWeight
895mmWidth
345mmDepth
630mmHeight
41dB(A)Max. sound pressure level at 2 m, according to ISO 9614
IPX4Enclosure class
064 166064 165Part No.
1) Refers to the outdoor temperature.
2) Refers to the indoor temperature.
3) According to EN 14825.
4) The performance test is carried out within the specified temperature range, where operation outside the working range is possible with
maintained function.
*)Transition nipple 3/8" to 1/2" to fit the indoor units AG-WL10-7 and AG-WT10-7 is included.
AG-AC10Chapter 9 | Technical data20