Nibe AG-WT10 series User guide

Installer manual
LEK
AG-WT10
Air/air heat pump
IHB GB 1535-2
331551

Table of Contents
21 Important information
2Safety information
3Read before starting the installation
3Electrical requirements
42 Delivery and handling
4Transport
4Assembly
4Supplied components
53 Pipe connections
5General
5Connecting the cooling circuit
64 Electrical connection
6General
6Connecting indoor and outdoor unit
75 Installation
7Installation instructions
10Pump down
116 Remote control
11Positioning remote control
12
Coding remote control for multiple indoor
units
157 Disturbances in comfort
15Troubleshooting
168 Accessories
179 Technical data
17Dimensions
18Technical specifications
19Electrical circuit diagram
20Index
1Table of Contents |AG-WT10

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.
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
vertical 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 connec-
ted first and then the electrical circuit. Perform in re-
verse 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
naked flames or heat sources can be toxic or danger-
ous.
AG-WT10Chapter 1 | Important information2
1 Important information

Read before starting the install-
ation
This heat pump complies with strict safety and function
standards.
It is very important that the installer or the service
technicians 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 im-
proper maintenance.
Electrical requirements
NOTE
The electrical discharge can cause serious
personal injury or death. Only qualified electri-
cians 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 groun-
ded 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 instruc-
tions below the connection. Incorrect connections
or unsuitable 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.
3Chapter 1 | Important informationAG-WT10

Transport
Take care when lifting and moving the indoor and
outdoor unit. We recommend that you ask for assist-
ance and bend your knees when you lift to avoid injur-
ing your back. There is a risk of cutting yourself on the
sharp edges of the climate unit.
Assembly
We recommend that this climate unit be installed by
an authorised technician in accordance with the sup-
plied 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
sulphur fumes.
Selection of installation location for indoor
unit
Caution
For optimum comfort, energy saving and
function the unit should be positioned as re-
commended below.
Prevent the following:
■Proximity to heat sources that can damage the unit's
cover.
■The presence of oil vapour (such as in a kitchen or
near industrial machinery) because oil contamination
can lead to malfunction or deform surfaces, especially
the unit's plastic surfaces.
■Premises with unstable surfaces can cause vibrations,
noise or water leaks.
■To drill holes in enclosed areas where there are elec-
trical parts or units.
The following is recommended:
■Select the appropriate position from which every
angle of the premises can be heated uniformly.
■Check that the surface is sufficiently stable to carry
the weight of the unit.
■Select a suitable position to ensure good ventilation
and maintenance space around the unit.
Installation area
Minimum working and maintenance range (measured
in mm):
150
150
150
150
100
150
2000
NOTE
Ensure that all pipes and hoses are insulated
to prevent the build-up of condensation.
Supplied components
AG-WT10-7:AG-WT10-4:
1 x Remote control1 x Remote control
2 x Battery2 x Battery
1 x Flared nut 1/4"1 x Flared nut 1/4"
1 x Flared nut 1/2"1 x Flared nut 3/8"
AG-WT10Chapter 2 | Delivery and handling4
2 Delivery and handling

General
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.
Max 10 m
Max 10 m
Max 10 m
Max 10 m
Pipe length
1.5 mThe refrigerant pipes' minimum length
7.5 mThe refrigerant pipes' total length with
standard filling
15 mThe refrigerant pipes' total length with
additional filling1
1Additional filling of refrigerant can be done when the unit
runs in cooling operation:
For pipes 1/4" - 3/8" = 15g/m
For pipes 1/4" - 1/2" = 20 g/m
For information about pipe dimensions, see section
"Technical Specifications" on page 18.
Condensation drain
Any condensation removal line must have an internal
diameter of at least 16 mm and be of sufficient length
to transport the condensation to an external drain.
Connecting the cooling circuit
■Use the flare method to connect the pipes.
■Lubricate the contact surfaces and hand tighten, the
tighten the connections using a torque wrench to
obtain a good and secure connection.
■Check carefully that there is no risk of any leakage
prior to the function test.
Caution
For further information, see the installation
manual for the outdoor unit.
5Chapter 3 | Pipe connectionsAG-WT10
3 Pipe connections

General
Electrical installation and service must be carried 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 carried out in accordance with the stipulations in
force.
Caution
Also see the installer handbook for the out-
door unit.
Connecting indoor and out-
door unit
L
N
C2
C1
L
N
C2
C1
L
N
Indoor unit Outdoor unit
Rated voltage
230V ~ 50Hz
A
B
C
Explanation
Power supply cableA
Communication cable1 B
Connection cableC
1The communication cable must always be screened. (8.5 m
screened cable included in AG-AA10-30/40/50).
AG-WT10Chapter 4 | Electrical connection6
4 Electrical connection

Installation instructions
1. Remove the mounting screw on the unit's wall
mounting and press on the hooks, which are
marked with triangles, for unhooking the panel.
2. The unit can be connected in four directions:
straight back (right and left) - right-hand side - left-
hand side.
3. Assess and mark the holes for the pipes and screws:
the centre point of the holes for the pipes must be
in line with the centre point of the holes for the
lower screws (see the figure for recommended hole
locations).
Spirit level
Spirit level
AG-WT10-4
AG-WT10-7
195 115
190260
7Chapter 5 | InstallationAG-WT10
5 Installation

4. Drill a hole at a suitable angle and with a diameter
of about 65 mm. Insert and adjust a plastic pipe.
2-5°
5. Prepare installation of the wall mounting.
6. Install the wall mounting on the wall using suitable
screws. Ensure that the unit is properly mounted
on the wall to prevent noise and vibrations.
7. When connecting cooling pipes to the right or left,
cut off the casing's groove.
8. Cables for external sensors must enter on the right-
hand side. The condensation collection box is
equipped with outlet points with pipes on the
right-hand side and rubber plug on the left-hand
side.
AG-WT10Chapter 5 | Installation8

9. To invert condensation removal, remove the con-
densation drain pipe by turning the metal clamp
anticlockwise, then pull out the rubber plug on the
other side. Reinstall by inverting the positions, use
a suitable tool to reinstall the plug correctly.
NOTE
To prevent damage to the rubber plug, do
not use sharp tools when installing it.
10. Lay the screened communication cable (B) and
connection cable (C) between the two units. Check
that the cables to the indoor unit protrude at least
500 mm from the wall. See image below.
500 mm
11. Open the unit's front panel. Remove the screws on
the cover to access the terminal block.
12. Insert the cables via the rear and then route them
to the front.
Cables
9Chapter 5 | InstallationAG-WT10

13. Pipe outlet on rear right-hand side:
Insert the pipes and condensation drain pipe
through the hole in the wall. Suspend the unit on
the previously installed wall mounting.
NOTE
Insulate the hole in the wall to prevent the
sensors being affected by the outdoor air.
14. Pipe outlet on rear left-hand side:
Insert the pipes from outside, then bend them to
the right.
Caution
Adapt the length of the pipes so that they
fit the pipe connections on the indoor unit.
15. Press lightly to hook the unit to the wall mounting.
16. Connect the cables to the terminal block. Secure
the cable using the cable tie. Also see section
"Electrical connection" on page 6.
WARNING!
Ensure that all connections are tightened
properly on the terminal block. Non-
tightened terminals lead to overheating,
problems with the heat pump's function
and are a fire risk.
17. Lead out the condensation hose and ensure the
correct fall. Make a water seal if necessary.
Pump down
See the outdoor unit's installation manual for detailed
information regarding "Pump down".
Pump down means retrieving all refrigerant in the
outdoor unit without losing the system's filling. This is
required when the climate unit is to be removed or
during repair of the cooling circuit.
AG-WT10Chapter 5 | Installation10

Positioning remote control
To ensure good unit function, avoid installing the re-
mote control under the following conditions:
■Behind a curtain or other covered areas.
■Where it can be met by air blown out from the cli-
mate unit.
■On poorly insulated walls.
■In direct sunlight.
■Where it can be subjected to electrical or magnetic
interference.
■Where there are obstructions between the remote
control and the climate unit.
Position on the wall:
■Hold the remote control in the desired position.
■Check that the remote control communicates with
the climate unit from this preset position.
■Secure the holder in the wall with two screws and
hang up the remote control.
11Chapter 6 | Remote controlAG-WT10
6 Remote control

Coding remote control for
multiple indoor units
Caution
Ignore this section if you only have one indoor
unit as this describes how to connect your re-
mote control to several indoor units.
In premises with multiple indoor units all remote con-
trols can control all indoor units if these have retained
default setting (code 1). To connect a remote control
to one or more specific indoor units, one of the follow-
ing codes can be selected. The remote control can only
control indoor units with the same code, however, you
can select to have more than one indoor unit with that
code.
NOTE
The indoor unit and remote control must not
be live when adjusting the DIP switches.
Location of DIP switches
Indoor unit
Open the unit cover and remove the front panel as il-
lustrated.
Remove the LED ramp from the underside of the cover.
Remove the mounting screws as illustrated, then un-
hook the cover by pressing the hooks down on the top
of the unit.
AG-WT10Chapter 6 | Remote control12

Remove the two covers that protect the circuit board
of the unit.
Pull out the circuit board and position the DIP switches
according to the table in section "Setting DIP switches"
on page 14.
T2
PGF
FLAP
IN SW3
SW1
LEK
13Chapter 6 | Remote controlAG-WT10

Remote control
Remove the battery cover on the remote control to
access the DIP switches.
ON
123456
DIP
ON
123456
DIP
Setting DIP switches
■Set the DIP switches on the indoor unit's circuit board (PCB) and remote control (see table).
■Insert the batteries into the remote control.
■Connect power to the indoor unit.
■The system now restarts with the new settings.
Set SW3 (PCB) according to what is indicated in the table.
4321Code
Remote control
Indoor unit
AG-WT10Chapter 6 | Remote control14

In most cases the heat pump detects a malfunction
and displays this as an alarm in the display
Troubleshooting
ActionPossible causeError code
See section "Disturbances in comfort" in the installer manual for the
outdoor unit.
Problem with the outdoor unit.E1
Communication problems between the indoor and outdoor units.E3 ■Check that the connection between C1 and C2 on the units' ter-
minal blocks is correct.
■Check that the communication cable is screened.
■Check that all ground cables are correctly connected.
■Check the communication fuse (F2) on the indoor and outdoor
unit.
■Check that the outdoor unit is activated and functioning correctly.
■Check that the power cable is correctly connected to the terminal
block.
■Check that the circuit board does not have burn marks.
■Check that the fan motor functions and that it does not cause a
short circuit in the indoor unit circuit board.
Faulty heat exchanger sensor on the indoor unit.E4 ■Check that the sensor is connected to the circuit board, according
to the electrical wiring diagram. See page 19.
■Check if the sensor is damaged and replace if necessary.
Faulty room sensor on the indoor unit.E5 ■Check that the sensor is connected to the circuit board, according
to the electrical wiring diagram. See page 19.
■Check if the sensor is damaged and replace if necessary.
Fault in the fan motor.E6 ■Check that the fan motor is connected to the circuit board, accord-
ing to the electrical wiring diagram. See page 19.
■Check that the fan motor is not blocked.
■Check if the fan motor is damaged and replace if necessary.
Faulty combination of indoor and outdoor units.E8 ■Check that the correct combination of outdoor and indoor units
was selected when the installation was installed.
■Check if any of the indoor units in the system has a communication
error. If so, rectify it first.
15Chapter 7 | Disturbances in comfortAG-WT10
7 Disturbances in comfort

Control unit AG-BU10
With AG-BU10 you can control the indoor unit via your
mobile phone.
Part no. 067 449
Caution
Also see the Installer manual for the accessory.
AG-WT10Chapter 8 | Accessories16
8 Accessories

Dimensions
AG-WT10-4
845
209
289
AG-WT10-7
970
224
300
17Chapter 9 | Technical dataAG-WT10
9 Technical data

Technical specifications
AG-WT10-7AG-WT10-4
Electrical data
230 V ~ 50 HzRated voltage
0.079 kW/0.35 A0.046 kW/0.22 AMax. specified power/operating current
Pipe connections
6.35 mm (1/4")6.35 mm (1/4")Pipe connection (liquid)
12.7 mm (1/2")9.52 mm (3/8")Pipe connection (gas)
0.8 mm0.8 mmMin. thickness refrigerant pipe
Dimensions and weight
14 kg10 kgWeight
970 mm845 mmWidth
300 mm289 mmHeight
224 mm209 mmDepth
Recommended working range 1)
-20/50 °CMin/max outdoor temp. during cooling
10/32 °CMin/max indoor temp. during cooling
-20/24 °CMin/max outdoor temp. during heating
0/27 °CMin/max indoor temp. during heating
Miscellaneous
36/39/42/46 dB(A)25/31/39/42 dB(A)Sound pressure level, fan speed low-high 2)
520-800 m3/h330-660 m3/hAirflow
2.0 l/h1.5 l/hDehumidification
069134069133Part No.
1) Access to full capacity is guaranteed within the heat pumps' working
range. Operation outside the recommended working range is possible
as the internal protective functions ensure that the heat pump will not
be damaged.
2) Sound pressure level measured at 2 m, according to ISO 9614
AG-WT10Chapter 9 | Technical data18