Saunier Duval SDH 15-025 NW User manual

EN
EN
Installation Manual
2010
WALL UNITS
SDH 15-025 NW
SDH 15-035 NW
SDH 15-050 NW
SDH 15-065 NW

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CONTENTS
12 PREPARATION FOR USE .................................................17
12.1 Checking for leaks ......................................................... 17
12.2 Evacuating the installation ............................................ 17
12.3 Start up .........................................................................18
12.4 Troubleshooting ............................................................19
13 ERROR CODES ..............................................................20
CONTENTS
1 YOUR SAFETY .................................................................3
1.1 Symbols used .................................................................3
1.2 Correct use of the unit .....................................................3
2 EXTREME OPERATING CONDITIONS
.................................3
3 IDENTIFICATION OF THE UNIT ..........................................3
4 DECLARATION OF CONFORMITY ......................................4
5 DESCRIPTION OF THE UNIT .............................................4
5.1 Indoor unit ......................................................................4
5.2 Outdoor unit ...................................................................5
5.3 Infra red controller ......................................................... 6
5.4 Valve connections .......................................................... 6
5.5 Supplied accessories ..................................................... 6
5.6 Technical specifications ..................................................7
6 TRANSPORT ...................................................................8
7 UNPACKING ...................................................................8
8 INSTALLATION ................................................................8
8.1 Qualification of the installation personnel ...................... 8
8.2 General precautions to be taken into account before
starting the installation .................................................. 8
8.3 General installation diagram .......................................... 9
9 INSTALLATION OF THE INDOOR UNIT ...............................9
9.1 Selecting the clearance location ..................................... 9
9.2 Fixing the mounting plate ............................................... 9
9.3 Installation of the pipe work .........................................10
9.3.1 Correct removal of condensate water .............................10
9.3.2 Handling the refrigerant pipes .......................................10
9.3.3 Correct installation of the condensate pipe work ........... 11
9.3.4 Making holes for the pipes ............................................12
9.3.5 Correct installation of indoor unit refrigerant pipe work ..12
9.3.6 Installation of the indoor unit body ............................... 13
10 INSTALLATION OF THE OUTDOOR UNIT .......................... 13
10.1 Selecting the assembly location .................................... 13
10.2 Planning the refrigerant return .......................................14
10.3 Connection of the refrigerant pipes ...............................14
10.4 Connection of the condensate drain pipe to outdoor unit ... 14
11 ELECTRIC WIRING ......................................................... 15
11.1 Safety precautions ........................................................ 15
11.2 Remark with regard to directive 89/336/eec .................. 15
11.3 Electric connection to the indoor unit ............................16
11.4 Electric connection to the outdoor unit ..........................16
11.5 Electrical characteristics ................................................16

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1 YOUR SAFETY
1.1 SYMBOLS USED
DANGER!
Direct danger for life and health.
DANGER!
Danger of electric shock.
WARNING!
Potentially dangerous situation for the product and the
environment.
NOTE!
Useful information and indications.
1.2 CORRECT USE OF THE UNIT
This unit has been designed and manufactured for the sole
purpose of comfort cooling and heating occupied residential
and commercial premises. The use thereof for other domestic
or industrial purposes shall be the exclusive responsibility of
the persons specifying, installing or using them in that way.
Prior to handling, installing, start up, using or performing
maintenance on the unit, the persons assigned to perform
these tasks should be familiar with all the instructions and
recommendations set forth in the unit's installation manual.
NOTE!
Keep the manuals throughout the service life of the
unit.
NOTE!
The information relating to this unit is divided between
two manuals: installation manual and user manual.
NOTE!
This equipment contains R-410A refrigerant. Do not
vent R-410A into atmosphere: R-410A, is a fluorinated
greenhouse gas, covered by Kyoto Protocol, with a
Global Warming Potential (GWP) = 1975.
NOTE!
The refrigerant fluid contained in this equipment must
be properly recovered for recycling, reclamation or
destruction before the final disposal of the equipment.
NOTE!
The relevant personnel performing any service of
maintenance operations involving the handling of the
refrigerant fluid must have the necessary certification
to comply with all local and international regulations.
1 YOUR SAFETY / 2 EXTREME OPERATING CONDITIONS / 3 IDENTIFICATION OF THE UNIT
2 EXTREME OPERATING CONDITIONS
This unit has been designed to operate within the range of
temperatures indicated on Figure 2.1. Ensure that these
ranges are not exceeded.
REFRIGERACIÓN CALEFACCIÓN
Interior
Exterior 43ºC D.B.
18ºC D.B.
24ºC D.B.
-7ºC D.B.
32ºC D.B.
18ºC D.B.
30ºC D.B.
15ºC D.B.
Fig. 2.1 Operating ranges of the unit.
Legend
D.B. Temperature measured by dry bulb
The working capacity of the unit changes depending on the
working temperature range of the outdoor unit.
3 IDENTIFICATION OF THE UNIT
This manual is valid for the Split system series. In order to
know the specific model of your unit please refer to the unit
nameplates.
The nameplates are located on the outdoor and indoor units.
Indoor
Outdoor 45ºC D.B.
-15ºC D.B.
17ºC D.B. 17ºC D.B.
30ºC D.B.
24ºC D.B.
-15ºC D.B.
COOLING HEATING
30ºC D.B.

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4 DECLARATION OF CONFORMITY / 5 DESCRIPTION OF THE UNIT
4 DECLARATION OF CONFORMITY
The manufacturer declares that this unit has been designed
and constructed in compliance with the standard in force with
regard to obtaining the CE Marking.
5 DESCRIPTION OF THE UNIT
This unit is comprised of the following elements:
- Indoor unit.
- Outdoor unit.
- Remote controller.
- Connections and accessories.
Figure 5.1 shows the unit components.
Fig. 5.1 Unit components.
Legend
1 Indoor Unit
2 Outdoor Unit
3 Remote controller
4 Interconnecting pipework
5 Condensed water drainage pipe
5.1 INDOOR UNIT
The indoor unit heats and cools air to be supplied to the room
to be conditioned.
The dimensions and weights of the indoor unit are shown
on Figure 5.2 and Table 5.1, depending on the model (please
consult the model nameplate).
The dimensions are given in mm.
Fig. 5.2 Dimensions of the indoor unit.
Legend
H Height
L Length
D Depth
MODEL H L D kg
15-025 NHWI 265 790 200 8,5
15-035 NHWI 265 790 200 8,5
15-050 NHWI 295 920 225 11,5
15-065 NHWI 325 1000 235 16,5
Table 5.1 Dimensions and weights of the indoor unit.

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5 DESCRIPTION OF THE UNIT
5.2 OUTDOOR UNIT
The outdoor unit ensures that the absorbed heat is released to
the outside from the room during operation in cooling mode
and that the heat introduced into the room during operation
in heat pump mode is taken from the outside.
The dimensions and weights of the outdoor unit are shown
on Figure 5.3 and Table 5.2, depending on the model (please
consult the model nameplate).
The dimensions are given in mm.
Fig. 5.3 Dimensions of the outdoor unit.
Legend
H Height
L Length
D Depth
A Length of valves
B Distance between valves
C Distance from the highest valve to the floor
I Distance between fixing holes
J Distance between fixing supports
MODEL H L D A B C I J kg
15-025 NHWO 600 760 285 60 60 145 290 530 38
15-035 NHWO 600 760 285 60 60 145 290 530 38
15-050 NHWO 600 760 285 60 60 145 290 530 39,5
15-065 NHWO 695 845 315 60 60 280 335 560 52
Table 5.2 Dimensions and weights of the outdoor unit.

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5 DESCRIPTION OF THE UNIT
5.3 INFRA RED CONTROLLER
The remote control allows using the unit.
5.4 VALVE CONNECTIONS
This outdoor unit has the following connections and shut off
valves:
- Gas (G) and liquid connections (L): they carry the refrigerant
between the outdoor and indoor unit.
- Discharge connections for condensate water (in the outdoor
and indoor unit): they allow the water to be properly
discharged which condenses during the normal operation
of the unit.
- Electric connections: these supply electric energy to the
unit.
5.5 SUPPLIED ACCESSORIES
This unit is provided with the accessories shown on Table
5.3.
No. Accessory Quantity
Indoor Unit
1Remote control 1
2Remote control bracket 1
3Batteries 2
4Mounting plate 1
5Drain pipe 1
Outdoor Unit
1Drain elbow 1
2Rubber mounting feet 4
3Rubber cap -
Table 5.3 Accessories supplied with the unit.

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5 DESCRIPTION OF THE UNIT
5.6 TECHNICAL SPECIFICATIONS
Units SDH 15-025 NW SDH 15-035 NW SDH 15-050 NW SDH 15-065 NW
Power supply V/Ph/Hz 230/1/50
Cooling Capacity kW 2,60 3,50 5,00 6,70
Power input kW 0,65 0,97 1,55 2,09
Operating current A 2,90 4,30 6,90 9,40
Heating Capacity kW 2,90 3,80 5,10 7,35
Power input kW 0,68 0,99 1,41 2,03
Operating current A 3,00 4,20 6,40 9,10
Indoor Unit
Air Flow volume m3/h 250/300/500 310/450/580 570/800/850 820/980/1080
Sound Pressure level dB(A) 25/31/37 26/33/38 31/38/42 35/42/45
Outdoor Unit
Air Flow volume m3/h 1060/1800 1060/1800 1360/2200 2000/2700
Sound Pressure level dB(A) 50 50 53 53
Refrigerant R410A
Refrigerant charge gr 1100 1100 1230 2050
Compressor type Rotary
Expansion system Capillary
Pipe Connections
Diameter liquid/gas pipes Inches 1/4" - 3/8" 1/4" - 3/8" 1/4" - 1/2" 3/8" - 5/8"
Maxi piping length m 20 20 25 25
Max. height IU under OU m 10 10 10 10
Max. height OU under IU m 10 10 10 10
Chargeless length m 7,5 7,5 7,5 7,5
Additional charge per metre gr 20 20 20 20
Table 5.4 Technical specifications.
NOTE!
As part of its policy for ongoing improvements of its
products, Saunier Duval reserves the right to modify
these specifications without prior notice.

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6 TRANSPORT
DANGER of injury and physical damage!
During transport and unloading, the unit could fall and
injure anyone within the immediate vicinity. To avoid
this:
- Only use transport and lifting gear with suitable
load capacity for the unit weight.
- Use only the transport and lifting gear correctly
(consult the respective user manuals).
- Use the slinging points provided for this purpose on
the unit.
- Secure the unit correctly using propriety fixings in
the mounting points provided.
- Always use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
7 UNPACKING
DANGER of injury and physical damage!
During unpacking you could get cut and bruised. To
avoid this:
- Use lifting gear with suitable load capacity for the
unit weight.
- Only use the transport and lifting gear correctly
(consult the respective user manuals).
- Use the slinging points provided for this purpose on
the unit.
- Always use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
Unpack the unit and check that:
- All parts have been supplied with the system.
- All the parts and accessories are in perfect condition.
If parts are damaged or missing please contact your supplier
immediately.
WARNING!
Protect the environment. Dispose of the packaging
following the local environmental standards in force.
Do not dispose of packaging irresponsibly, recycle
where possible.
8 INSTALLATION
8.1 QUALIFICATION OF THE INSTALLATION PERSONNEL
Ensure that this unit is installed by suitable qualified
personnel. All installers must hold a suitable safe handling of
refrigerants qualification.
8.2 GENERAL PRECAUTIONS TO BE TAKEN INTO ACCOUNT
BEFORE STARTING THE INSTALLATION
DANGER of injury and physical damage!
During unpacking you could get cut and bruised. To
avoid this:
- Only use lifting gear with suitable load capacity for
the unit weight.
- Use the transport and lifting gear correctly (consult
the respective user manuals).
- Use the slinging points provided for this purpose on
the unit.
- Always use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
DANGER of injury and physical damage!
The unit should be installed in accordance with the
Regulations and Standards for refrigeration, electrical
and mechanical installation pertaining to the country
in which the installation is being undertaken.
DANGER!
Danger of electric shock. All appliances must be earthed.
Connect the earth cable to the correct earthing point
(do not connect to the gas pipe, water pipe, lightning
conductor or telephone line).
DANGER!
Danger of electric shock.
Ensure the appliance is protected by a correctly rated
circuit breaker.
WARNING!
Danger of breakdowns or malfunction.
Only use the pipework specifically intended for
refrigerant R410A for the air conditioning installation.
Never use plumbing pipes.
6 TRANSPORT / 7 UNPACKING / 8 INSTALLATION

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8 INSTALLATION / 9 INSTALLATION OF THE INDOOR UNIT
8.3 GENERAL INSTALLATION DIAGRAM
WARNING!
Danger of breakdowns or malfunction.
Observe the minimum clearences indicated in Figure
8.1.






Fig. 8.1 General diagram of the installation and the minimum assembly
distances.
Legend
A Clearance to the front of the internal unit (minimum 10 cm)
B Clearance to ceiling above (minimum 5 cm)
D Height in relation to the floor (minimum 2 m)
E Side clearance opposite side connections (minimum
20 cm)
F Rear clearance (minimum 20 cm)
G Side clearance connections side (minimum 30 cm)
H Front clearance (minimum 100 cm)
9 INSTALLATION OF THE INDOOR UNIT
9.1 SELECTING THE CLEARANCE LOCATION
WARNING!
Danger of breakdowns or malfunction.
Observe the minimum clearances indicated in Figure
8.1.
NOTE!
If a hole already exists in the wall or a refrigerant pipe
or condensed water pipe has already been installed,
the base plate can be mounted to adapt to these
conditions.
Recommendations
- Install the indoor unit close to the ceiling,ensuring minimum
clearances are met.
- Choose a position site that will allow air to reach all parts of
the room evenly. Avoid beams, obstructions or lights which
would interfere with the airflow.
- Install the indoor unit at an adequate distance from chairs
or workstations in order to avoid unpleasant draughts.
- Avoid installing close heat sources.
9.2 FIXING THE MOUNTING PLATE
Carry out the steps described below:
• Place the mounting plate on the chosen installation point.
• Level the plate horizontally and mark the position of holes
to be made on the wall.
• Remove the plate.
WARNING!
Danger of breaks in the domestic installation.
Check that there are no electricity lines, pipes or
any other services which could be damaged behind
the spots where the holes are to be drilled. If other
services are found, choose another installation
location and repeat the aforementioned steps.
• Make the holes using a drill and insert the wall plugs.
• Place the mounting plate in position, level it horizontally
and fix it with the screws and the plugs.
WARNING!
Danger of breakdowns or malfunction.
Ensure that the mounting plate has been correctly
levelled. Otherwise, disassemble the plate and
assemble it again correctly. Failure to do so could lead
to water leaks.

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9 INSTALLATION OF THE INDOOR UNIT
9.3 INSTALLATION OF THE PIPE WORK
9.3.1 CORRECT REMOVAL OF CONDENSATE WATER
WARNING!
Danger of breakdowns or malfunction.
Danger of condensed water leakage.
In order to ensure that the unit drains correctly take
the recommendations described in this section into
account.
Methods for the removal of the condensed water which is
generated in the indoor unit:
- Condensed water can be allowed to drain naturally using
the natural fall of the condensed water pipe to a suitable
drain point. In order for it to be aesthetically pleasing, use
a solid pipework or trunking to cover the pipework.
- Alternative hidden installation solutions also exist.
- For example, using an external pump for removal of the
condensed water, carrying the condensed water to outside
or to main drainage system.
- By natural fall to a collection point which is then emptied
using a pump which operates when the tank is full, pumping
the water to a suitable drain point.
NOTE!
This pump for condensed water is available as an
original Saunier Duval accessory with the corresponding
installation instructions (not supplied in the UK).
WARNING!
Danger of breakdowns or malfunction.
Danger of condensed water leakage.
To ensure that the unit drains properly using a natural
fall, the condensed water pipe must have a an adequate
fall from the indoor unit.
9.3.2 HANDLING THE REFRIGERANT PIPES
DANGER!
Danger of burns and eye injuries.
When brazing or soldering pipe lines, use suitable
protection equipment (protective eye protection and
mask, welding gloves, flame proof clothing).
WARNING!
Danger of breakdowns or malfunction. Danger of
damage to refrigerant pipes through the use of
unsuitable materials.
- Use only pipes specifically intended for refrigeration and
R410A refrigerant.
NOTE!
In specialised dealers you will find refrigerant pipes
and the correct thermal insulation.
- Ensure that the refrigerant pipes are clean, dry and polished
on the inside.
- The insulation of the pipes should be done using specific
class ‘O’ insulation for cooling.
- Observe the minimum and maximum pipe lengths for each
model.
- Wherever possible avoid install excessive numbers of
bends in pipes. Do not over bend the pipe, keep the radius
as wide as possible to minimise load losses.
- When brazing pipes together, use only the correct welding
materials. During the brazing process a stream of dry
nitrogen should be run through the inside of the pipes
in order to avoid oxidisation forming inside the pipe
connection.
- Only cut the coolant pipes using propriety pipe cutters,
ensuring no swarf enters the pipe, and always keep the
pipe ends sealed wherever possible.
- Any flaring work should be performed meticulously in order to
create the correct connection and to avoid subsequent losses
of gas through the pipes.
- When reaming the cut pipe keep the pipe opening directed
downwards in order to prevent shavings from getting into
the pipes.
- Mount the joining tubes carefully, ensuring they cannot
become displaced during brazing. Ensure that there is no
strain on the pipe joints.
- Ensure that all pipework is insulated with the correct grade
of closed cell insulation and that all joints in the insulation
are sealed with insulation tape or glued.
- Carefully tighten the flaring connectors, centring the flaring
cone and the flanged nut. Applying excessive force without
correctly centring can damage the thread and may allow
water ingress into the connection.

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9 INSTALLATION OF THE INDOOR UNIT
9.3.3 CORRECT INSTALLATION OF THE CONDENSATE PIPE WORK
WARNING!
Danger of breakdowns or malfunction. Danger of water
leaks and blockages from unit and pipework:
- Ensure that sufficient air breaks and traps are provided
to avoid water being retained within the indoor unit.
Otherwise, the condensed water could leak from the indoor
unit.
- For gravity drains ensure fall is sufficient, the pipework is
adequately supported and does not sag and bends are of
large radius to avoid blockages.
- If the water pipe is run outdoors, ensure that it is insulated
against freezing.
- If the condensed water pipe run through an un-heated
room, fit thermal insulation.
- Avoid installing the condensed water pipe with a rising
bend (see Figure 9.1).
Fig. 9.1 Avoid rising bends.
- If the drain is run to a tank or butt, avoid installing the
condensed water pipe with it free end submerged in water
(see Figure 9.2).
Fig. 9.2 Avoiding submerging the end.
- Do not allow the drain line to be crimped or flattened which
could reduce the flow of water from the indoor unit (see
Figure 9.3).
Fig. 9.3 Avoid kinking the pipe.
- For drain pipes run to ground level outside, install the
condensed water pipe in such a way that the distance of its
free end from the floor is at least 5 cm (see Figure 9.4).
Fig. 9.4 Minimum distance from the floor.
Legend
H Minimum distance from the floor: 5 cm
- Install the condensed water pipe in such a way that its free
end is kept away from unpleasant odours, such as from
open drains, to ensure that they are not drawn back into
the unit (see Figure 9.5).
Fig. 9.5 Avoids unpleasant odours.

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9 INSTALLATION OF THE INDOOR UNIT
9.3.4 MAKING HOLES FOR THE PIPES
• Case A: Pipework exiting from the rear of the unit.
In this case, a suitable hole must be made in the wall
behind the unit (see Figure 9.6).
• Drill a hole in accordance with the diameter and position as
indicated in Figures 9.6, ensure the hole is slightly descending
to the outside to allow for a fall in the drain line.
Fig. 9.6 Dimensions of the hole for the piping.
• Case B: Running the pipework out of either side or the
bottom of the unit.
In this case holes do not have to made in the wall since the
indoor unit body has knock outs which can be opened to
allow the pipes to exit the unit: choose the most convenient
one for the desired outlet position (see Figures 9.7).
• Carefully break the knock out in the casing using pliers.
Fig. 9.7 Windows for the installation of the pipes.
Legend
1 Exit for right piping
2 Exit for indoor piping
3 Securing with adhesive tape
4 Exit for left piping
9.3.5 CORRECT INSTALLATION OF INDOOR UNIT REFRIGERANT PIPE
WORK
• If installing the rear exiting piping:
• Place the seal ring supplied for the hole in the piping and
insert the coolant pipes with the condensed water pipe
through the hole.
• Remember to seal the hole inside and out properly after
installing the pipes.
• Carefully bend the installation pipe in the right direction,
taking care not to overbend or kink the pipe.
WARNING!
Danger of breakdowns or malfunction. Danger of
damage to the coolant pipes.
Bend the pipe carefully to prevent kinking or breaks.
• There should be sufficient pipe tails on the indoor unit to
go through the wall width. If this is not the case connect
further lengths of pipe as required. Carefully feed the pipe
tails through the holes together with the condensate
pipework and interconnecting electrical cable.
• Hang the indoor unit on the top edge of the mounting
plate.
• Tilt the lower part of the indoor unit forwards and insert an
auxiliary tool (e.g. a piece of wood) between the mounting
plate and the unit (see Figure 9.8) to allow access to the
unit connections.
Fig. 9.8 Assembling the indoor unit.
• Connect the coolant pipes from the outdoor unit and the
condensed water hose to the installation drain.
• Insulate the coolant piping and joints correctly and
separately. To do so, cover any possible cuts with masking
tape or insulate any bare coolant piping with the
corresponding insulation material suitable for air
conditioning installations (for connection of the electrical
wiring see section 11).
Left refrigerant
pipe hole Ø 65
Right refrigerant
pipe hole Ø 65
120mm or
more to
wall
120mm or
more to wall
Indoor unit outline Installation plate
150 mm or more to ceiling
Left refrigerant
pipe hole Ø 65
Right refrigerant
pipe hole Ø 65
120mm or
more to wall 120mm or
more to wall
Indoor unit outline Installation plate
150 mm or more to ceiling
790 mm
025: 250 mm
035: 265 mm
025 /035
050
065
120mm or
more to wall 120mm or
more to wall
150 mm or more to ceiling
Indoor unit outline

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10 INSTALLATION OF THE OUTDOOR UNIT
10.1 SELECTING THE ASSEMBLY LOCATION
WARNING!
Outdoor units must be placed in accessible areas for
subsequent maintenance and repair operations. Saunier
Duval will not be responsible for any costs derived from
incorrect positioning that prevents easy access.
DANGER of personal injury and material damage from
explosion!
Install the unit away from inflammable gasses or liquids
or easily combustible substances and free from thick
dust formation.
DANGER of personal injury and material damage from
collapse!
Ensure that the ground is smooth and level and can
withstand the weight of the outdoor unit.
WARNING!
Danger of corrosion.
Do not install the unit near to corrosive materials.
- The outdoor unit can only be mounted outdoors, never
inside a building.
- Do not install the unit in such a way that the air discharge
affects the air inlets of premises nearby.
- If possible avoid direct sunlight.
- Ensure that the ground has sufficient rigidity to avoid
vibrations.
- Ensure that there is sufficient space to observe the minimum
distances (see Figure 8.1).
- Ensure that neighbours are not disturbed by draughts or
noise.
- If the premises are rented obtain the owner's consent.
- Comply with local regulations: there are considerable
differences dependant on the area.
- Leave enough space to fit the condensed water drainage
pipe (see section 10.4).
Fig. 9.9 Section showing pipework run behind indoor unit.
Legend
1 Heat-resistant material
2 Drain pipe
3 Coolant pipe
4 Piping support plate
5 Indoor/outdoor electric cable
• For pipework exiting from the right hand side and bottom of
the unit extend the pipework through the relevant knock
out before hanging unit (see section 9.3.6).
• For pipework exiting from the left of the unit, make the
connections at the rear of the unit first before hanging the
unit (see section 9.3.6).
NOTE!
The flare connections should be, where possible,
accessible to allow leak test and future access.
9.3.6 INSTALLATION OF THE INDOOR UNIT BODY
• Check that the installation has been carried out correctly
and that there are no leaks (see section 12.1).
• Securely hang the indoor unit body onto the upper notches
of the mounting plate. Briefly move the body from side to
side to verify that it is secure.
• Lift the body up slightly from underneath, press it onto the
mounting plate and then lower it vertically. The body will fit
into the lower supports on the mounting plate.
• Check that the indoor unit is properly secured.
• In the event that the body does not slot into the supports
properly, repeat this process.
• Do not use excessive force as this may damage the fixing
lugs, ensure that the pipework is not trapped behind the
unit.
9 INSTALLATION OF THE INDOOR UNIT / 10 INSTALLATION OF THE OUTDOOR UNIT

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10.2 PLANNING THE REFRIGERANT RETURN
The refrigerant circuit contains a special oil to lubricate the
outdoor unit compressor. To assist the return of the oil to the
compressor the following is recommended:
- that the indoor unit is located higher than the outdoor unit
and,
- that the suction pipe (the thickest one) is assembled with
a gentle slope towards the compressor.
If the outdoor unit is mounted higher than the indoor unit,
the suction pipe must be mounted in a vertical position. At
heights exceeding 7.5 m (where this is permissible):
• Additional oil traps must be installed at each 7.5M interval
10.3 CONNECTION OF THE REFRIGERANT PIPES
NOTE!
Installation is easier if the gas suction pipe is connected
up first. The suction pipe is the thickest one.
• Mount the outdoor unit in the required position.
• Remove the flare nuts and bonnets from the shut off in the
outdoor unit.
• Carefully bend the installed pipe towards the outdoor
unit.
WARNING!
Danger of breakdowns or malfunction.
Danger of damage in the refrigerant pipes.
Bend the pipe carefully to prevent kinks or breaks.
• Cut the pipes, leaving enough extra piping hanging over to
enable the unit to be connected at the outdoor unit joins.
• Flare the refrigerant pipe after first placing the flare nut on
the pipe.
• Join the refrigerant pipes to the corresponding outdoor unit
connection.
• Insulate the refrigerant piping correctly and separately. To
do so, cover any joins in the insulation with masking tape
or insulate any bare coolant piping with the corresponding
insulation material suitable for air conditioning.
10.4 CONNECTION OF THE CONDENSATE DRAIN PIPE TO
OUTDOOR UNIT
NOTE!
Applicable only to heat pump units.
Whilst the unit is running with the heat pump function,
condensation forms in the outdoor unit and has to be
drained.
• Insert the elbow included in the supply in the hole provided
at the bottom of the outdoor unit and turn it 90º to fix it
(see Figure 10.1).
Fig. 10.1 Assembly of the drainage elbow for condensed water
Legend
1 Outdoor Unit
2 Drainage elbow
3 Drainage hose
• Mount the drainage hose ensuring that it leaves the
equipment with a downward slope.
• Verify the correct drainage of the water by pouring the
water into a collection tray located at the bottom of the
outdoor unit.
• Protect the condensate water hose with thermal insulation
to avoid freezing.
10 INSTALLATION OF THE OUTDOOR UNIT

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11 ELECTRIC WIRING
11.1 SAFETY PRECAUTIONS
DANGER!
Danger of electric shock.
Before connecting the unit to the electric supply line,
ensure that the power is isolated.
DANGER!
Danger of electric shock.
All electrical works should be completed by an
electrician or a similarly qualified person.
DANGER!
Danger of electric shock.
Ensure that the power line is equipped with a bipolar
or tetrapolar switch according to the model, (single
phase or three-phase) with a distance of at least 3 mm
between contacts (Standard EN-60335-2-40).
DANGER!
Danger of electric shock.
Equip the installation with protection against short-
circuits to avoid electric shocks. This is a legal
requirement.
DANGER!
Danger of electric shock.
Some units may be supplied with an European style
plug, where this does not match the local electrical
sockets only use with a suitable adaptor or replace the
plug with a UK style one.
DANGER!
Danger of electric shock.
Use wiring in accordance with the respective local,
national and international wiring standards regarding
installation in technical electrics.
DANGER!
Danger of electric shock.
Use an approved electric plug and power supply cable.
WARNING!
Danger of breakdowns or malfunction.
All electrical wiring must be of suitable size and rating
for the appliance and should only be installed by
suitably qualified personnel.
WARNING!
Danger of breakdowns or malfunction. Compliance with
the Standard EN 61000-3-11: Check that the nominal
power of the main phase current connection is > 100.
WARNING!
Danger of breakdowns or malfunction.
Ensure that the supplied power voltage is in the range
of 90% to 110% of the rated voltage.
WARNING!
Install the unit in such a way that the electric plug is
easily accessible. Thus, if required, the unit can be
quickly disconnected.
11.2 REMARK WITH REGARD TO DIRECTIVE 2004/108/CE
In order to prevent electromagnetic interference during the
start up of the compressor (technical process), the following
installation conditions must be adhered to.
• Make the air conditioning unit power supply connection at
the main power distribution. Carry out the distribution with
low impedance. Normally the required impedance is
reached at a 32 A fusing point.
• Check that no other equipment is connected to this power
supply line.
NOTE!
For more detailed information on the electric
installation, please consult the Technical Connection
Conditions applied by your electricity supply board.
NOTE!
In order to obtain more information with regard to
power details of the air conditioner consult the unit
rating plate.
11 ELECTRIC WIRING

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11.4 ELECTRIC CONNECTION TO THE OUTDOOR UNIT
WARNING!
Danger of breakdowns or malfunction. If the fuse on the
PC board is blown please change it with type T. 25A/
250V.
• Remove the protective covering in front of the electrical
connections in the outdoor unit.
• Loosen the screws in the cable retainer and fully insert the
cable ensuring the cable sheath extends past the cable
retainer before tightening the screws to clamp the cable.
WARNING!
Danger of malfunction and breakdowns resulting from
water penetration.
Always terminate the interconnecting cable from below
the cable entry to avoid water penetration into the
terminal box.
WARNING!
Danger of malfunction and breakdowns resulting from
short-circuits.
If using a cable with additional cores, insulate the
unused cable wires using electrical tape and ensure
that they cannot come into contact with any other parts
of the electrical installation.
• Check the cable retainer is sufficiently tight to avoid undue
strain on the connections.
• Check that the cables are correctly secured and
connected.
• Replace the protective wiring cover.
11.3 ELECTRIC CONNECTION TO THE INDOOR UNIT
WARNING!
Danger of breakdowns or malfunction. If the fuse on the
PC board is blown please change it with type T. 3,15A/
250V.
•
Open the front lid on the indoor unit by pulling upwards on it.
• Remove the wiring cover on the right of the body by
unscrewing it.
• Insert the cable from outside through the hole in the indoor
unit where the refrigerant pipe is already connected.
• Throw the electrical cable from the rear of the indoor
unit through the specific hole in the front. Connect the
cables in the indoor unit terminal space according to the
corresponding connection layout. Figure 11.1.
• Check that the cables are correctly secured and connected.
Then mount the wiring cover.
Fig. 11.1 Wiring diagram
Legend
1 Strip for the outdoor unit
2 Strip for the indoor unit
11.5 ELECTRICAL CHARACTERISTICS
SDH 15-025 NW SDH 15-035 NW SDH 15-050 NW SDH 15-065 NW
Power supply (V/Ph/Hz) 230/1/50 230/1/50 230/1/50 230/1/50
Supply
Supply section up to 25 meter (in mm2) 1,5 1,5 2,5 2,5
Indoor/Outdoor Outdoor Outdoor Outdoor Outdoor
Thermal-magnetic circuit breaker, type D (A) 10 10 16 16
Interconnection section up to 25 meter (mm2) 1,5 1,5 1,5 1,5
Inteconnect shielded cable or not (YES/NO) NO NO NO NO
Immediatte residual current protector (A) 0,03 0,03 0,03 0,03
Table 11.1 Electrical Characteristics
1
2

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12 PREPARATION FOR USE
12 PREPARATION FOR USE
This consists of the following steps:
• Checking for Leaks.
• Evacuation of the installation.
• Start up.
• Troubleshooting.
12.1 CHECKING FOR LEAKS
Fig. 12.1 Checking for leaks in the installation.
Legend
1 Suction valve (gas)
2 Return valve (liquid)
3 Service manifold
4 Non-return valve
5 Gauge lines
6 Nitrogen cylinder
• Connect a service manifold set to the service port on the
gas line stop valve of the outdoor unit.
• Connect a nitrogen cylinder to the charging hose of the
refrigerant gauges.
• Carefully open the valves on the service manifold to allow
the nitrogen to enter the installation. Do not open the
service valve on the outdoor unit as this will release the
pre-charged refrigerant from the outdoor unit.
• In the event of using R-410A coolant set it to 40 bar(g) of
pressure, for 10/20 min.
• Check that all the connections and joints are gastight. If
any leaks are found, repair and start the process again from
the beginning.
• On satisfactory completion of the test, close all the valves
on the combined meter and remove the nitrogen cylinder.
• Release the pressure from the system by slowly opening
the valves on the service manifold.
• Do not continue to the next step until the pressure test has
been successfully completed.
According to Regulation 842/2006/EC, the complete refrigerant
circuit must be periodically checked for leakage. Take the necessary
actions to ensure these tests are performed and the results
correctly logged into the maintenance record of the machine. The
leakage test must be done with the following frequency:
• Systems with less than 3 kg of refrigerant => periodic
leakage test not needed
• Systems with 3 kg or more of refrigerant => at least once
every 12 months
• Systems with 30 kg or more of refrigerant => at least once
every 6 months
• Systems with 300 kg or more of refrigerant => at least once
every 3 months
12.2 EVACUATING THE INSTALLATION
Fig. 12.2 Evacuating the installation
Legend
1 Suction valve (gas)
2 Return valve (liquid)
3 Service manifold
4 Non-return joint
5 Gauge lines
6 Vacuum pump suitable for refrigeration systems
• Connect a service manifold to the three-way valve on the
gas line of the outdoor unit.
• Connect a vacuum pump to the charging connection of the
service manifold.
• Ensure that the the service manifold valves are closed.
• Turn the vacuum pump on and open the service manifold
shut off valve to open the system to the vacuum pump.
• Ensure that all other valves are closed.
• Leave the vacuum pump functioning for approximately 15
minutes (depending on the size of the installation) to carry
out the vacuum.
• Check the needle on the low pressure manometer: it should
indicate -0.1 MPa (-76 cmHg - >3 Torr). If the service manifold
gauge is not capable of measuring to these pressures a
separate Torr gauge should be fitted in line to measure this
pressure.

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12 PREPARATION FOR USE
Fig. 12.3 Low pressure manometer reading with the low valve open.
• Close the valves on the service manifold and disconnect
the vacuum pump.
• Check the manometer needle after approximately 10-15
minutes have elapsed: the pressure should not rise. If it
does rise, there are leaks in the circuit: repair them (Check
all joints and connections to the service manifold carefully
as the leak may be here).
• Close the valves on the service manifold and disconnect
the vacuum pump.
WARNING!
Do not proceed to the next step until a satisfactory
evacuation of the installation has been completed.
Fig. 12.4 Low pressure manometer reading with the low valve closed:
checking for leaks.
WARNING!
Danger of malfunction and leaks.
Ensure that the service valves on the outdoor unit are
closed.
12.3 START UP
Fig. 12.5 Filling the installation.
Legend
1 Two-way valve
2 Actuation faucet
• Open the two-way valve by twisting the allen key 90º
anticlockwise and close it after 6 seconds. The installation
will be filled with coolant.
• Check the installation again for tightness:
• If there are leaks see section 12.4.
• If there are no leaks, continue.
• Remove the service manifold.
• Open the two and three-way service valves by twisting the
allen key anticlockwise as far as it will go.
Fig. 12.6 Opening of the two and three-way valves.
Legend
1 Two-way shut off valve
2 Three-way service valve
3 Allen key (not supplied) to open valves
• Seal the two and three-way service valves with the
corresponding protective covers.

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12 PREPARATION FOR USE
Fig. 12.7 Protective covers.
Legend
1 Service hole lid
2 Two and three-way valve covers
• Connect the unit and run it for a few moments checking that
it carries out its functions correctly (for more information
see the user manual).
12.4 TROUBLESHOOTING
If the event of a gas leak, proceed as follows:
• Recover the remaining refrigerant from the system.
- You will need the correct refrigerant recovery unit and
refrigerant reclaim cylinder to achieve this.
WARNING!
Never release refrigerant into the environment!
Refrigerant R410A is a harmful product for the
environment.
• Check the flaring joins.
• Repair the leak, replace indoor and outdoor parts which are
the cause of the leak as necessary.
• Fill the unit with the correct weight of refrigerant using
accurate and calibrated electronic scales.
• Proceed to check for leakage as described above.

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13 ERROR CODES
13 ERROR CODES
INDOOR UNIT: 025 - 035 - 050
DISPLAY LED STATUS
E0 EEPROM parameter error
E2 Zero-crossing signal error
E3 Indoor fan speed out of control
E6 Open or short circuit of indoor room or evaporator temperature sensor
E1 Indoor / outdoor units communication protection
E5 Open or short circuit of outdoor ambient or condenser temperature sensor or outdoor EEPROM parameter error
P0 IPM module protection
P1 Over voltage or too low voltage protection
P2 Temperature protection of compressor top
P4 Inverter compressor drive error
INDOOR UNIT: 065
DISPLAY LED STATUS
E0 EEPROM parameter error
E6 Open or short circuit of indoor room or evaporator temperature sensor
E1 Indoor / outdoor units communication protection
E5 Open or short circuit of outdoor ambient or condenser temperature sensor or outdoor EEPROM parameter error
P0 IPM module protection
P1 Over voltage or too low voltage protection
P2 Temperature protection of compressor top
P4 Inverter compressor drive error