Improper installation or repair of Webasto cooling and heating systems can lead to serious injury or
death.
To install and repair Webasto cooling and heating systems you need to have completed a Webasto
training course and have the appropriate technical documentation, special tools and special
equipment.
Only genuine Webasto parts may be used. See also accessories catalogue and spare parts lists.
NEVER try to install or repair Webasto cooling and heating systems if you have not completed a
Webasto training course, you do not have the necessary technical skills and you do not have the
technical documentation, tools and equipment available to ensure that you can complete the
installation and repair work properly.
ALWAYS carefully follow Webasto installation and repair instructions and heed all WARNINGS.
Webasto rejects any liability for problems and damage caused by the system being installed by
untrained personnel.
Special aspects are pointed out with the following symbols:
CAUTION
Particular danger of injuries or fatal accidents
ATTENTION
Particular danger of damage to components
FLAMMABLE
Particular danger of fire and explosion
Environmental Information
Note on environmental protection
Technical Information
Reference to further sources of information
Note
Not on a special technical feature
1
Page 6
2 Important NotesBlueCool S Series
2Important Notes
2.1Safety precautions
CAUTION
Moving parts!
Danger of injury, damage to air-conditioning
system.
Only operate the air-conditioning system
when installed.
CAUTION
Hot surfaces!
Danger of burns.
Do not touch the air-conditioning unit during
operation.
ATTENTION
Danger from escaping refrigerant!
If you perceive a hissing noise and mist,
refrigerant may have escaped and the airconditioning system may be defective.
Please proceed as follows:
Ventilate and leave room, interrupt power
supply and secure against switching on again;
Go on deck;
Contact Webasto Service Centre or shipyard.
Please read this information carefully before you begin with
the installation!
FLAMMABLE
Ignition of surrounding gases or highly
flammable liquids by sparking of the airconditioning system!
Danger of fire and explosion of ship or of petrol
station.
The air-conditioning systems must ALWAYS
be switched off during refuelling or while in a
petrol station area.
ATTENTION
Defective operation or damage to the
components of the air-conditioning system and
the ship.
Observe these installation instructions when
installing the electrical lines, sea water system,
the electrical box and the air ducts.
If you require additional information about special
applications in the marine sector or are unsure about an
application option, please contact your authorised Webasto
Marine dealer or phone us directly at the following number:
–Webasto Thermo & Comfort SE
+31-(0)38-3371160 (Netherlands)
–Webasto Product N. A., Inc.
1-800-555-4518 (USA) or
1-800-667-8900 (Canada).
Use the following phone number to learn the location of the
Webasto Service Centre nearest you:
–International: +31-(0)38-3371160
–USA: (800) 860-7866 (toll-free)
or visit our website at the following Internet address:
–www.webasto.com or
–www.webasto.us
2.2Statutory regulations governing
installation
NOTE
It is the responsibility of the person carrying out
the installation to ensure that the installation
meets all relevant local regulations. These
include, for example, EU directives, regulations
of the American Boat & Yacht Council and the
American Coast Guard and general standards of
the Air Conditioning and Refrigeration Industry
(ARI). In addition, all relevant regulations for
official approval (if available) with regard to the
installation and use of auxiliary heaters in ships
must be complied with.
Among other things, be sure to observe the following
regulations and guidelines:
•Legal regulations for accident prevention
•Legal regulations for environmental protection
•The applicable safety conditions of the standard
DIN EN ISO 12100
•Directive 97/23/EC of the European Parliament
and of the Council to approximate the laws of
the Member States concerning pressure
equipment
•Directive 2004/108/EC of the European
Parliament and of the Council to approximate the
laws of the Member States concerning
electromagnetic compatibility
•Directive 2006/95/EC of the European Parliament
and of the Council to approximate the laws of
the Member States concerning electrical
equipment for use within certain voltage ranges
2
Page 7
BlueCool S Series2 Important Notes
•Directive 2002/95/EC of the European Parliament
and of the Council of 27 January 2003 on the
restriction of the use of certain hazardous
substances in electrical and electronic devices
•DIN EN 387 (refrigeration systems and heat
pumps - safety-related and environmentallyrelevant requirements)
•DIN EN 60335-2-40 (safety of household and
similar appliances - Safety - Part 2-40: Particular
requirements for electrical heat pumps, airconditioners and dehumidifiers)
•Electrical systems in accordance with small-craft
directive 94/25/EC (EN ISO 10133, ISO 13297 73/
23/EC, 93/68/EC (Article 13), EN ISO 9097)
•Other local regulations.
2.3Additional documentation to be used
Technical documentation for BlueCool S is also available at
http://dealers.webasto.com.
For the operator:
•Operating instructions
For the installer (password-protected):
•Maintenance Instructions
•Troubleshooting Guide
•Validation Report
3
Page 8
3 Delivery ScopeBlueCool S Series
1 2
10 4
3
5 6 7 9 8
3Delivery Scope
The delivery scope contains:
1 = Electrical box
2 = Fixation brackets/ L clamp (4x)
3 = Air-conditioning unit
4 = Installation instructions
5 = Operating instructions
6 = Digital display
7 = Digital display bezel
8 = Cabin temperature sensor
9 = Digital display cable
10 = Air filter (already installed)
Fig. 1 Delivery scope
4
Page 9
BlueCool S Series4 Information on Unit
4Information on Unit
4.1Proper use
The air-conditioning system is used to air-condition ships.
The BlueCool S has been built according to the current state
of technology and the recognised safety rules. Nevertheless,
in case of improper or in appropriate use, danger to the life
and limb of the user or others and impairments of the unit
and other property may result.
Any other use of the BlueCool S is not permissible. Any
other use of or changes to the product, including as part of
assembly and installation, will result in any and all warranty
claims being voided.
4.2Comformity
We, as the manufacturers, herewith declare that this product conforms with the basic directives for marketing in the
EU.
97/23/EC Pressure Equipment Directive in accord-
ance with DIN EN 387
2004/108/EC Electromagnetic Compatibility (EMC)
2006/95/EC Electrical equipment (Low Voltage Direc-
tive) in accordance with DIN EN 60335-2-
40
2002/95/ECRoHS
4.3Variants
Marine selfcontained air-conditioning unit (230 V):
The type label is located on the evaporator of the unit (see
Fig. 4).
You will find the output, order number and registration data
there.
4.5Unit description
Fig. 3 Example of type label
6
Fig. 4 Unit BlueCool S
Page 11
BlueCool S Series4 Information on Unit
H
>50
(100)
D
L
>40*
(100)
>50**
(100)
>40
(100)
>20
(150)
The BlueCool S is an air-conditioning system with its four
basic components, i.e. compressor, condenser, evaporator
and throttle element.
Evaporator (air heat exchanger)
Refrigerant vapourises at low pressure and a temperature
below the ambient temperature of the evaporator. It
absorbs heat from the ambient air in the process.
Compressor (refrigerant compressor)
The refrigerant vapour extracted from the evaporator at low
pressure is compressed to a higher pressure, and therefore
to a higher temperature. In the process, additional heat is
fed to the refrigerant.
Condenser (sea-water heat exchanger)
The compressed, heated refrigerant vapour is condensed at
a temperature which is above the sea water temperature. In
the process, the entire heat absorbed in the evaporator and
compressor is given off to the sea water.
Throttle element (capillary tube)
The refrigerant at condensing pressure is expanded to the
evaporation pressure in the throttle element.
NOTE
The heating mode is inefficient if the sea water
temperature drops below approx. 6 °C, as it is
not possible to extract sufficient heat from the
cold sea water. The interior air cannot be heated
sufficiently.
4.6Dimensions and minimum distances
Cooling mode of operation
The air-conditioning system absorbs heat form the room air
in the evaporator and cools it down by approx. 15°K. The
cooled air is blown into the room with the fan.
The compressor now compresses the refrigerant vapour,
which is then condensed to a liquid when flowing through
a condenser cooled with sea water. The heat released is
emitted to the sea water. The condensed refrigerant is
routed through the throttle element and expanded to wet
steam when flowing into the evaporator. The liquid portion
of the refrigerant is now evaporated and absorbs heat from
the room air again. As a result, the refrigerant circuit is
closed.
NOTE
With all Webasto air-conditioning systems, sea
water flows through the condenser, which is
sucked in via a pump. This ensures the cooling
process. If the sea water temperature is above
35 °C, the cooling capacity of the airconditioning system drops, as the heat absorbed
can not longer be sufficiently transferred.
Heating mode
Heat can also be generated with the BlueCool S airconditioning system. A 4-way reverse valve is installed in the
system for this purpose. As a result, the condenser becomes
an evaporator and vice versa. The sea water heat exchanger
(not the evaporator) withdraws available heat from the sea
water, which is then fed to the refrigerant. The air heat
exchanger becomes the condenser and gives off the
condensation heat to the room air and heats it to approx.
45/50 °C.
Fig. 5 Dimensions and minimum distances
> xxx:Minimum distance
(yyy):Recommended distance
>40* and >50**: Exception S27, see table in Chapter 4.7
To remove and clean the air filter, a distance of > 100 mm
above the system should be maintained if the cover plate
cannot be removed.
Minimum distance
(recommended distance), at front
Also see Fig. 5.
Minimum distance
(recommended distance), at rear.
Also see Fig. 5.
Minimum distance
(recommended distance), at top.
Also see Fig. 5.
ø of air outlet
[mm] - [inches]
Min. ø of air duct
[mm] - [inches]
Supply air grille [cm
Return air grille [cm2]490550
Refrigerant quantity
R410a [g]
Min. sea water temperature in heating
mode [°C]
Max. sea water temperature in cooling
mode [°C]
2
]235250
250
S10-R-230VREV-R410a
100 - 4”125 - 5”2x 125 - 2x 5”
100 - 4”125 - 5”2x 125 - 2x 5”
280
S13-R-230VREV-R410a
380
S16-R-230VREV-R410a
40 (100)
20 (150)
50 (100)
400580
6
35
S20-R-230VREV-R410a
390
800
S27-R-230VREV-R410a
650
1,600
670
*1 BTU/h and electrical data are based on 7 °C evaporation temperature and 38 °C condensation temperature
*2 Amperage values for core unit depending on compressor load. Maximum values under tropical conditions at 230V/50Hz.
*3Starting amperage RMS (Root Mean Square) for core unit for the first 300 ms
*4Starting amperage RMS (Root Mean Square) for core unit for first 40 ms
*5Air flow free blowing
*6Recommendation only. The pump size shall be adapted to the application in order to always ensure minimal sea water flow.
9
Page 14
5 InstallationBlueCool S Series
5Installation
5.1General information 5.2Installation location
NOTE
To ensure proper operation, the following must
be observed:
•Air outlets must be installed above below
the ceiling to ensure sufficient mixing and
cooling or heating of the room air.
•Avoid a cold air short-circuit between the air
outlet and the air inlet. These must be
mounted with a sufficient distance from
each other.
•The cabin temperature sensor may not be
mounted on the air outlet, as otherwise the
controller cannot detect the actual
temperature in the room.
•All components must be positioned and
installed in accordance with their installation
instructions.
•A noise reduction can be achieved if desired
by insulating the area around the system.
FLAMMABLE
Danger of ignition of explosive gases!
Danger of ship exploding.
Do not install air-conditioning system in rooms
with highly flammable liquids or gases.
CAUTION
The air-conditioning system can intake and
distribute escaping carbon monoxide and
other gases!
Danger of poisoning and suffocation.
Never install the air-conditioning system in the
machine room of the ship's engine or in any
other room in which harmful gases can be
sucked in.
BlueCool S air-conditioning systems are generally installed in
the living area.
Requirements for the installation location:
•Sufficient space must be available to ensure access to
the refrigerant, sea water, condensed-water drain and
electrical connections. See Chapter 4.6, “Dimensions
and minimum distances”.
•The system must be accessible for service and
maintenance purposes.
•The air-conditioning unit must be installed on a flat,
horizontal surface.
•As condensed water results during operation of the airconditioning unit, a drain line must be provided on the
condensate tray.
10
Page 15
BlueCool S Series5 Installation
A) BlueCool S air-conditioning unit
B) Digital display
C) Return air grille
D) Flexible air duct
E) Transition box
F) Supply air grille
G) Sea water inlet
H) Sea water strainer
I) Sea water pump
J) Sea valve
K) Sea water outlet
L) Sea water hose
M) Electrical box
N) Power supply
O) Cable for digital display
5.3Installation example
The illustration below shows an example of a typical installation of a BlueCool S air-conditioning system.
Fig. 6 Installation example
11
Page 16
5 InstallationBlueCool S Series
5.4Transporting unit
CAUTION
The unit is heavy and can be carried
incorrectly!
Danger of injury, damage to the system and oil
or refrigerant loss caused by dropping and
carrying incorrectly.
Only carry the unit by the condensate tray, by
the fan or by the upper pipe elbows of the
condenser.
Never grasp and carry the unit by other pipes.
See Fig. 7.
The fins of the evaporator bend easily. When
installing, make sure that bent fins are
correctly aligned again to ensure proper air
feed.
5.5Mounting unit
ATTENTION
Do not remove covers, caps or fittings!
Danger of damage to the electrical components
and refrigerant loss.
Do not remove covers, caps or fittings used to
protect the electrical wiring or to seal off the
refrigerant.
ATTENTION
Water damage can occur!
Danger of water damage to furniture, devices,
etc.
Do not damage the insulation of the conden-
sate tray to avoid condensed-water from
forming on the outside of the condensate
tray.
Lift unit and position it at the installation location.
Fasten the unit using the "L" clamps provided.
Fasten the unit so that secure seating is ensured, however
the unit can be removed again later for maintenance purposes if necessary.
Fig. 7 Transport the unit.
5.6Installing condensed-water drain line
NOTE
Danger of water damage.
Route the condensed-water drain line with a
downhill slope and without water pockets to
ensure sufficient emptying of the condensate
tray and to prevent damage by backed-up
condensed water.
The condensed-water drain line must match the diameter of
the condensed-water drain fitting on the condensate tray.
The condensed-water drain line must be of a sufficient size
if several air-conditioning units are connected.
Connect the condensate tray to the bilge or other
condensed-water or water-connecting points via the
condensed-water drain line.
No counter-pressure may prevail in the condensed-water
drain line. For example, never connect the condensed-water drain line to the sea water line of the air-conditioning
system.
If necessary, create a new water collection point, complete with a pump, level switch and drain line.
12
Page 17
BlueCool S Series5 Installation
1
2
3
5
4
6
5.7Installing sea water circuit
NOTE
The sea water components must be installed
with a continuous uphill slope from the throughhull fitting to the strainer and pump to the airconditioning unit.
This ensures that no air bubbles collect in the sea
water circuit which can lead to a malfunction of
the pump.
1 = Through-hull fitting with sea valve
2 = Sea water strainer
3 = Sea water pump
4 = Bleeding valve
5 = Air-conditioning unit
6 = Sea water outlet
Fig. 8 Sea water circuit
13
Page 18
5 InstallationBlueCool S Series
5.7.1Installing through-hull fitting
CAUTION
Sea water enters when installed
incorrectly!
Boat can sink; danger of drowning.
Suitable measures must be taken to install the
through-hull fitting in order to prevent an
unchecked entry of sea water.
NOTE
•The sea water inlet must be mounted at the
lowest possible point below the water line
and below the sea water pump.
•Through-hull fittings must be installed with
the openings in the direction of travel to
produce supporting back-pressure in the
intake line
•Sailboats: install the through-hull fitting
near the centre of the hull
•Fast motor boats: install through-hull fitting
in rear section of hull.
The sea valve on the through-hull fitting is used for safety
and maintenance purposes.
If one sea water pump supplies several air-conditioning
units, a water distributor and pump relays are required. For
information on this topic, see Fig. 18, “BlueCool S (several
units, 1 pump)”.
A shut-off valve must be provided for each air-conditioning
unit.
Self-priming sea water pumps
If a self-priming pump is installed above the water line, the
pump head must be pre-filled during initial start-up or after
longer times at standstill to enable self-priming.
Pump characteristics
The pump characteristics enable the selection and
dimensioning of the sea water pump depending on
expected pressure losses in the entire system.
Operation of the pumps outside the pump characteristic can
result in pump damage due to motor overloading or
cavitation. Damage which occurs due to improper operation
is excluded from the warranty.
Install through-hull fitting, seal off with sealant and check
for leak-tight seating.
5.7.2Installing sea water pump
NOTE
•We recommend installing the sea water
pump at least 0.25 m below the water line.
•If installation below the water line is not
possible, a self-priming pump must be used.
Selecting sea water pump
To increase the operating safety, we recommend the use of
self-priming pumps. These are considerably less subject to
the collection of air which, for example, can enter the
system when manoeuvring in reverse or when heeling.
Cascading of several BlueCool S Series systems supplied via
one sea water pump and one sea water inlet is possible.
However, the maximum number should be limited to four SSeries systems.
Installation
Install the sea water pump.
Make sure that the pump is accessible for maintenance
work.
It is urgently recommended that a vent be installed directly
behind the outlet opening of the sea water pump. This
especially applies to the pumps WB250/350/500/1000.
See Fig. 8.
Each system requires a separate sea water outlet to check
the respective minimum flow rate and to enable an
operating check of the system. To adjust the flow rates,
throttles in the form of cross-sectional reductions may be
used if necessary.
14
Page 19
BlueCool S Series5 Installation
5.7.3Installing sea water strainer
NOTE
•Match the size of the sea water strainer to
the sea water quality.
If a great deal of dirt is to be expected, then
a strainer of the corresponding size should
be chosen.
•The sea water strainer must be installed
between the through-hull fitting and the sea
water pump.
•Comply with specified direction of flow.
•Make sure that the sea water strainer is
accessible for maintenance work.
Install the sea water strainer in accordance with the ma-
nufacturer's specifications.
5.7.4Installing sea water outlet
NOTE
•The sea water outlet must be installed
approx. 0.10 m above the water line.
•Do not install the sea water outlet in the
bow area of the ship to prevent back flow.
The sea water outlet may not be mounted below the
waterline. Although this results in reduced operating noises,
it does increase the counter-pressure in the system,
considerably lowering the flow rate. Then a simple test of
the flow rate is no longer possible.
Each air-conditioning unit requires a separate sea water
outlet to ensure and to check the required supply with
cooling water.
5.7.5Installing sea water lines
CAUTION
Sea water enters when installed
incorrectly!
Boat can sink; danger of drowning.
Install double hose clamps on sea water lines.
NOTE
•Observe the minimum diameter of the sea
water lines (see Chapter 4.7, “Technical
Data”).
•Only use reducers when this serves the
specific distribution of the volume flows
when several systems are connected to one
pump.
•The sea water lines must be installed as
follows:
– As short as possible
– Kink-free
– Without water pockets
– Protected against rubbing.
•On the intake side of the pump, it is
advisable to use a line with overdimensioned cross-section, as soiling can
occur here most frequently, resulting in an
unintentional reduction of the flow rate.
Install the intake line(s) with a light upward incline from
the sea water inlet to the air-conditioning unit.
Install delivery line(s) to the air-conditioning unit and the
sea water outlet.
5.8Installing air ducts
ATTENTION
Condensed water can form on the outer
surfaces of the cold air ducts!
Danger of water damage.
Completely insulate the air ducts, as otherwise
condensed water will result on the outside of
the air duct and drip water will form.
ATTENTION
Damage to objects behind installation
surfaces during sawing, drilling and
screwing work!
Danger of damage to furniture, devices, hoses,
electrical wiring, etc.
When producing the openings for the return
air grille and the supply air grille, take the
objects located behind these areas into
account.
15
Page 20
5 InstallationBlueCool S Series
NOTE
•Prevent a restriction of the air supply due to
excessively tight bending radii of the air
ducts or due to accidental deformations.
•Install the air ducts as short as possible
(< 2.5 m). Excessively long air ducts result in
a reduction in the air flow, and therefore in
a decrease in the cooling/heating capacity of
the system.
•The return air grille should be mounted
offset so that the air flowing in does not
flow directly into the evaporator inlet. This
enables the intake noises from the fan to be
considerably reduced.
See Fig. 9.
Table 1 Requirements for air duct
Fig. 9 Mount return air grille offset.
Minimum cross-section of return air and supply air
grille
The minimum cross-sections of the return air and supply air
grille and the air ducts must be taken into account for a
satisfactory functionality of the air-conditioning system.
Model BlueCool S
8,000BTU/h1x235 cm²1x490 cm²100 mm125 mm
10,000BTU/h1x235 cm²1x490 cm²100 mm125 mm
13,000BTU/h1x250 cm² 1x550 cm² 125 mm150 mm
16,000BTU/h 1x390 cm²1x800 cm²125 mm150 mm
20,000BTU/h1x390 cm²1x800 cm²125 mm 150 mm
27,000BTU/h2x650 cm²2x1,600 cm²2 x 125 mm2 x 150 mm
Duct type
When flexible air ducts are used, they must be of a high
quality and must be sufficiently reinforced with steel or
plastic coils to prevent accidental crushing.
Flexible air ducts should be pulled out to their maximum
length to offer the smoothest possible inside surface.
For extremely long air duct sections, rigid ducts (e.g. made
of PVC) should be given preference. These ducts are much
smoother than flexible air ducts, and therefore also have a
considerably lower inside resistance.
Supply air grille
Cross-section
Return air grille
Cross-section
Diameter of air
duct
<2m long
Diameter of air
duct
<5m length
Fan outlet
Flexible air ducts mounted directly on the fan outlet and
then bent at right angles must always be avoided, as they
considerably restrict the air flow. All Webasto fans can be
mounted in several positions to enable a straight outlet out
of the fan. An example of proper installation is shown in Fig.
10.
16
Fig. 10 Fan outlet turned (on right)
Turning fan
The fan must be removed to turn it.
Remove the black insulation off the fastening screws of
the fan motor on the back of the fan.
Page 21
BlueCool S Series5 Installation
Screw out the screws of the fan motor and carefully remo-
ve the fan without bending the impeller. The power cable
to the fan can remain connected when doing so.
The fastening screws of the fan housing are now acces-
sible through the opening of the fan motor. Screw out the
screws, remove the fan housing and remount it in the desired position.
Remount the fan motor.
Transition boxes
The transition boxes behind the supply air grilles are used as
a compensation volume for the air flow and therefore
reduce the noise level of the air flowing through the grille.
Therefore, the depth of the transition box has a major effect
on the distribution of the air flow.
Install the return air grille.
Install the transition box and the supply air grille.
Install the insulated air ducts from the air-conditioning
unit to the transition box.
Fix the air ducts in place so that they do not move even at
higher fan speeds.
17
Page 22
6 Electrical ConnectionsBlueCool S Series
2
4
1
.
5
2
7
7
3
1
0
214
239
254
8
3
6Electrical Connections
6.1General information
CAUTION
Connection of electrical system carries
230 V!
Danger of injuries or fatal accidents and damage
to the air-conditioning system or other electrical
devices.
Work on electrical systems which carry 230 V
may only be carried out by persons certified
accordingly for this purpose.
Before working on the electrical system, the
system must be disconnected from the power
supply.
The entire air-conditioning system must be protected by
external circuit breaker in the supply line.
With the BlueCool S27, not only the power supply of the
PCB, but also a separate power supply for the compressor
must be provided, which must also be protected externally.
See Fig. 17.
The minimum cable cross-section must be taken into
account.
6.2Installing electrical box
Install the electrical box.
Make sure that the fastening screws are accessible for
opening and removal.
Any desired installation position may be chosen for the
electrical box if no requirements are placed on the IP
protection class.
However, for Protection Class IP22 and higher, the
connections for the digital display and cabin temperature
sensor and the USB connection must be directed
downward.
Make sure that the maximum permissible ambient
temperature (see table in Chapter 4.7) is not exceeded.
Fig. 11 Electrical box dimensions
6.3Connecting unit
Many electrical connections are already preassembled on
the models S8 and S20. Only the sea water pump and a
power supply must be connected.
Please observe the wiring diagrams in Chap. 7 when doing
so.
A separate mains supply for the compressor with a 20 A
circuit breaker is required for model S27. The use of a relay
is required for this purpose.
No external relay is required when using the Soft Start with
an integrated relay.
S8 to S20 without Soft Start
Connect the sea water pump.
Guide the connection cable through the PG cable gland
18
and connect in the cable terminal (Fig. 14, No. 10).
When operating several BlueCool S Series units with one
sea water pump, observe Fig. 18, “BlueCool S (several
units, 1 pump)”.
Page 23
BlueCool S Series6 Electrical Connections
Establish the mains connection.
Guide the mains cable through the PG cable gland.
Slide the ferrite over the mains cable in the electrical box
and secure it with cable ties.
Plug the mains cable with the phase and neutral conductor into the cable terminal (Fig. 14, No. 2) on the PCB.
Connect the earthing cable on the earthing terminal to
the electrical box housing.
S27 without Soft Start
Connect the sea water pump.
Guide the connection cable through the PG cable gland
and connect in the cable terminal (Fig. 14, No. 10).
When operating several BlueCool S Series units with one
sea water pump, observe Fig. 18, “BlueCool S (several
units, 1 pump)”.
Establish the mains connection.
Guide the mains cable through the PG cable gland.
Slide the ferrite over the mains cable in the electrical box
and secure it with cable ties.
Plug the mains cable with the phase and neutral conductor into the cable terminal (Fig. 14, No. 2) on the PCB.
Connect the earthing cable on the earthing terminal to
the electrical box housing.
Connect the compressor.
Guide the mains cable for the compressor through the PG
cable gland and connect the phase and neutral conductor
to the external relay.
The mains connection for the compressor must be
established via a separate supply line (fusing with 20 A).
Connect the earthing cable on the earthing terminal to
the electrical box housing.
S27 with Soft Start
Connect the sea water pump.
Guide the connection cable through the PG cable gland
and connect in the cable terminal (Fig. 14, No. 10).
When operating several BlueCool S Series units with a sea
water pump, observe Fig. 18, “BlueCool S (several units,
1 pump)”.
Establish the mains connection.
Guide the mains cable through the PG cable gland.
Slide the ferrite over the mains cable in the electrical box
and secure it with cable ties.
Connect the mains cable with the phase in a 4x cable terminal and from there to the Soft Start (Comp. Com), compressor and cable terminal (Fig. 14, No. 2) on the PCB.
Connect the neutral conductor to the Soft Start (Active)
and from there connect the extra cable to the cable terminal (Fig. 14, No. 2) on the phase.
Connect the earthing cable on the earthing terminal to
the electrical box housing.
The compressor is connected via the Soft Start as shown
in the wiring diagram, Fig. 17, “BlueCool S27, with Soft
Start”.
The control connection of the Soft Start is only carried out
via the neutral connector of the cable terminal (Fig. 14,
No. 11).
S8 to S20 with Soft Start
Connect the sea water pump.
Guide the connection cable through the PG cable gland
and connect in the cable terminal (Fig. 14, No. 10).
When operating several BlueCool S Series units with one
sea water pump, observe Fig. 18, “BlueCool S (several
units, 1 pump)”.
Establish the mains connection.
Guide the mains cable through the PG cable gland.
Slide the ferrite over the mains cable in the electrical box
and secure it with cable ties.
Plug the mains cable with the phase and neutral conductor into the cable terminal (Fig. 14, No. 2) on the PCB.
Connect the earthing cable on the earthing terminal to
the electrical box housing.
The compressor is connected via the Soft Start as shown
in the wiring diagram, Fig. 16, “BlueCool S8 to S20, with
Soft Start”.
19
Page 24
6 Electrical ConnectionsBlueCool S Series
Cool
Auto
Heat
123
85
83
75
55
6.4Mounting digital display and cabin
temperature sensor
NOTE
Direct sunlight and other heat sources can
impair the operation of the system.
Installation location
The temperature measured by the cabin temperature sensor
should realistically represent the actual room temperature.
DO NOT mount the digital display or the cabin temperature
sensor into the immediate vicinity of a supply air grille.
Select an installation location which is free from external
influences if possible. Among other things, the following
external influences should be avoided:
•Exposure to direct sunlight
•Radiators
•Kitchen cooker
•Light sources
•Compressor radiation
•etc.
It is advisable to mount the cabin temperature sensor in the
area of the return flow, e.g. on the back of the return air
grille.
Mount the cabin temperature sensor at the desired in-
stallation location.
Connect the sensor cable to the electrical box from the
outside.
See Fig. 14.
Connect the connector of the cable for the digital display
on the back of the digital display. See Fig. 12.
Connect the cable for the digital display from the outside
to the electrical box.
See Fig. 14.
NOTE
Only use the original Webasto BlueCool cable
for the digital display. Standard network cables
are not suitable.
Fasten the digital display.
Mount the bezel on the digital display.
Fig. 12 Installing digital display
6.5Accessories
6.5.1Infrared remote control
An infrared remote control is available as an option.
The infrared remote control is based on the standard
protocols also used by television sets and other household
appliances. Although the Webasto control elements are
designed so that interference with most TV models is
avoided, the user should note that interactions with
television sets or other household appliances can occur in
certain cases.
NOTE
It is generally advisable not to install the
Webasto digital display near other devices with
infrared receivers.
20
Page 25
BlueCool S Series6 Electrical Connections
Fig. 13 Infrared remote control
To activate the remote control, Parameter 1 from the
chapter 10.2.1, Table 4 must be activated in the system
programming.
The parameter shows the display "1.x" on the digital
display. The parameter is to have the value 1 for the
activated remote control.
6.5.2PC diagnosis
PC diagnostic software is available for the BlueCool S Series.
Please see the corresponding documentation for additional
information on this subject.
21
Page 26
7 Wiring diagramsBlueCool S Series
1
3
2
45
6
7
8
9
10
11
1 = Fan motor
2=Power supply
3 = Low-pressure switch
4 = High-pressure switch
5 = Cabin temperature sensor
6 = Digital display
7 = PC diagnosis via USB
8 = Evaporator temperature sensor
9 = 4-way reverse valve
10 = Sea water pump
11 = Compressor (for models S8 to S20)
7Wiring diagrams
Fig. 14 Electrical wiring
22
Page 27
BlueCool S Series7 Wiring diagrams
CB
CB
gr
ge
vi
sw
bl
bl
br
bl
sw
OLP
crs
br
bl
br
bl
OLP
crs
br
sw
gn
ws
sw
rt
F105F104
F103
F102
F101
230 V AC switchboard
Sea water pump
4-way reverse valve
Ferrite
Run capacitor
Fan
Low-pressure switch
High-pressure switch
Evaporator
temperature
sensor
USB connection
Digital display
Cabin temperature
sensor
Cable colours
bl
br
ge
gn
gr
rt
sw
vi
ws
blue
brown
yellow
green
grey
red
black
purple
white
Fuses
F101
F102
F103
F104
F105
PCB
Fan
Compressor
Sea water pump
4-way reverse valve
0.5 A
3.15 A
10 A5A3.15 A
only S27
only S8 to
S20
Fig. 15 BlueCool S, without Soft Start
23
Page 28
7 Wiring diagramsBlueCool S Series
CB
gr
ge
vi
sw
sw
rt
F105F104
F103
F102
F101
bl
Comp. common
Start Winding
Switched active
Run Winding
bl
br
sw
gn
ws
br
bl
sw
OLP
crs
230 V AC switchboard
Sea water pump
4-way reverse valve
Ferrite
Run capacitor
Fan
Low-pressure switch
High-pressure switch
Evaporator
temperature
sensor
USB connection
Digital display
Cabin temperature
sensor
Cable colours
bl
br
ge
gn
gr
rt
sw
vi
ws
blue
brown
yellow
green
grey
red
black
purple
white
Fuses
F101
F102
F103
F104
F105
PCB
Fan
Compressor
Sea water pump
4-way reverse valve
0.5 A
3.15 A
10 A5A3.15 A
Soft Start
24
Fig. 16 BlueCool S8 to S20, with Soft Start
Page 29
BlueCool S Series7 Wiring diagrams
CB
gr
ge
vi
sw
sw
rt
F105F104
F103
F102
L
N
N
PE
Mains
F101
bl
bl
br
sw
gn
ws
Run Winding
Run Cap
Active
Start Winding
On
Comp. Com
sw
bl
bl
OLP
crs
230 V AC switchboard
Sea water pump
4-way reverse valve
Ferrite
Fan
Low-pressure switch
High-pressure switch
Evaporator
temperature
sensor
USB connection
Digital display
Cabin tempera-
ture sensor
Cable colours
bl
br
ge
gn
gr
rt
sw
vi
ws
blue
brown
yellow
green
grey
red
black
purple
white
Fuses
F101
F102
F103
F104
F105
PCB
Fan
Compressor
Sea water pump
4-way reverse valve
0.5 A
3.15 A
10 A5A3.15 A
Soft Start with relay
Fig. 17 BlueCool S27, with Soft Start
25
Page 30
7 Wiring diagramsBlueCool S Series
Shared sea water pump
Pump connection System 1
Power supply for sea water pump
Pump connection System 2
Pump connection System 3
Pump connection System 4
26
Fig. 18 BlueCool S (several units, 1 pump)
Page 31
BlueCool S Series7 Wiring diagrams
bl
br
Sea water pump
Pump connection
Cable colours
bl
br
blue
brown
FUSE/VOLTAGE SETTING:
Fig. 19 Connection of power supply unit for WB200 sea water pump
27
Page 32
8 OperationBlueCool S Series
1
2
345
6
7
8
9
1=Display
2 = Plus button for changing setpoint temperature
3 = Minus button for changing setpoint temperature
4 = Fan setting button for controlling fan speed
5 = Function button for setting/programming
6 = “On/Off” button
7 = LED display for heating mode
8 = LED display for automatically switching between
operating modes
9 = LED display for cooling mode
8Operation
8.1Description
Fig. 20 Digital display
8.4Switching on system
After connecting the power supply, first all LEDs and all
segments of the numeric display flash for a few seconds,
then "INIT" briefly appears on the digital display.
The display “50H” or “60H” follows, depending on which
voltage the system is operated on, for example 115 V/60 Hz
or 230 V/50 Hz. A special case is 230 V/60 Hz.
If the system was switched on before cutting off the power
supply, the current room temperature appears on the digital
display and the system starts up automatically in the set
operating mode. Otherwise the digital display goes dark and
the display is in the stand-by mode.
Switch on the system by pressing the "On/Off" button
(6).
Now the electronic controller assume the step-by-step startup of the air-conditioning system and the standard
operation.
The digital display shows the current room temperature of
the cabin in which the digital display is mounted or where
the cabin temperature sensor is located (if it is in another
room). After approx. 20 seconds, the digital display provides
information on which operating mode (cooling or heating)
the system is started in. The selection is dependent on the
setpoint temperature and the room temperature measured
by the cabin temperature sensor.
The BlueCool S air-conditioning systems are operated with
the digital display. This enables access to all functions for
standard operation of the air-conditioning system and the
connected accessories (sea water pumps, remote control,
etc.).
8.2Operating levels for operator
The operating level for the operator is accessible without an
access code. It shows important information and offers
adjustment options which require no special prior
knowledge.
8.3Setting levels for installer
The setting levels for the installer may only be operated with
specialist knowledge and are therefore protected with an
access code. The installer can adjust the system operating
parameters here.
28
After another approx. 50 seconds, the compressor is
switched on and the standard mode begins.
The sea water pump always runs as soon as the system is
switched on and the compressor starts up.
If only the system is switched on and no change is made on
the digital display, the compressor and the sea water pump
start up with a delay of 20 sec.
8.5Switching off system
The system can be switched off by pressing the "On/Off"
button (6). The condition for this is that the user is in the
start menu with the display of the room temperature.
On the programming level, the "On/Off" button (6) is
used to confirm the setting and not to switch off the system.
Page 33
BlueCool S Series8 Operation
8.6Switching on cooling mode/heating
mode
NOTE
The system only cools under the following
conditions:
•Room temperature > 15 °C.
•Sea water temperature < 35 °C.
•Setpoint temperature < room temperature.
NOTE
The system only heats under the following
conditions:
•Room temperature < 29 °C.
•Sea water temperature > 6 °C.
•Set temperature > room temperature.
For information on switching on the system, see Chapter
8.4.
Switching over to cooling (heating) means selecting an
operating mode which contains cooling (heating).
•F01 = cooling only.
•F02 = only heating (reverse heating operation).
•F03 = automatic toggeling between cooling and
heating (via reverse heating operation).
•F07 = dehumidification (when ship is
unmanned).
Confirm the entry by pressing the "On/Off" button (6)
or wait at least 5 seconds so that the entered value is automatically adopted.
8.8Set the fan speed
For information on switching on the system, see Chapter
8.4.
Press the fan setting button (4).
The current fan speed is displayed.
Press the Plus button (2) or Minus button (3) to
change the fan speed.
If the Plus button (2) is pressed again when the highest
speed (5) has already been selected, the automatic fan
mode is switched on and “bA” appears on the digital
display.
Pressing the Minus button (3) exits the automatic fan
mode and returns to the manual mode.
Confirm the entry by pressing the “On/Off” button (6)
or wait at least 5 seconds so that the entered value is automatically adopted.
F01 and F03 are possible for cooling (F02 and F03 for
heating).
Press the function button (5) 3 times until "F x" ap-
pears in the display (1).
Cooling mode: Press the Plus button (2) or Minus but-
ton (3) repeatedly to change the value “Fx” (opera-
ting mode) to “F01” or “F03”.
Heating mode:
Change the value “Fx” (operating mode)
to “F02” or “F03”. Note: only if no code is activated. Otherwise the code
must be initially entered now!
Confirm the entry by pressing the "On/Off" button
(6).
8.7Setting setpoint temperature
Set the setpoint temperature in accordance with your own
preferences.
Press the Plus button (2) or Minus button (3).
The setpoint temperature is displayed.
Press the Plus button (2) or Minus button (3) to
change the setpoint temperature.
29
Page 34
9 CommissioningBlueCool S Series
1
2
345
6
7
8
9
1=Display
2 = Plus button for changing setpoint temperature
3 = Minus button for changing setpoint temperature
4 = Fan setting button for controlling fan speed
5 = Function button for setting/programming
6 = “On/Off" button
7 = LED display for heating mode
8 = LED display for automatically switching between
operating modes
9 = LED display for cooling mode
9Commissioning
9.1Checking connections
Check all connections:
– Check the electrical connections for firm seating.
– Check the lines of the sea water circuit for firm seating
and leaks.
– Check the air ducts for firm seating and leaks.
Make sure the return air grille and supply air grille are
not blocked.
9.4Test run
9.2Checking operation of condensedwater drain
Pour water into the condensate tray and check it for pro-
per drainage.
Ensure clear passage and that all connections are leaktight.
9.3Filling sea water pump head
Self-priming sea water pumps: fill pump head with water.
Connect the power supply as shown in the wiring
diagram.
Switch on the generator if necessary.
Switch on the air-conditioning system in the cooling mo-
de.
Check the sea-water flow rate.
30
Fig. 21 Digital display
Determine the flow rate of the exiting sea water with a
catch container and a stop watch. The actual flow rate must
be above the required minimum flow rate (see Chapter 4.7,
“Technical Data”) to ensure fault-free operation at high sea
water temperatures.
If the minimum value is not reached, then all pressure losses
in the system must be reduced (e.g. use larger crosssections, fewer elbows, shorter lines) or use a stronger
pump.
Page 35
BlueCool S Series10 Overview of Programming Functions
10Overview of Programming Functions
Table 2 Operating structure
Operating levelSetting level 2Setting level 3
On On On
Display
1-5, A
setpoint
temperature
15-29 °C
bFan speed
Evaporator
E
temperature
Access codesimultaneously and simultaneously and
Setting level 1Access codeAccess code
Setpoint temperature 15 °C,
59 °F
Off Off
Setpoint temperature 29 °C,
85 °F
F
U
Fd
hd(x)
cd(x)
Temp
Operating
mode
Operating volt-
age
No. of dehu-
midification
cycles
Heating time in
dehumidifica-
tion cycle
Cooling time in
dehumidifica-
tion cycle
Room temper-
ature
0(x)
1(x)
2(x)
3(x)
b5Fan speed 53(x)
b4Fan speed 44(x)
b3Fan speed 35(x)
b2Fan speed 26(x)
Undervoltage
switch-off
Activation or deac-
tivation of IR
remote control
Fan type (AC, EC,
electronic silencer)
Thermostat-con-
trolled fan or per-
manently switched-
on fan
u(x)Temperature unit
0(x)
1(x)
2(x)
Switch-off temperature for compres-
sor cooling
minimum
Switch-off temperature for compres-
sor cooling
Switch-on temper-
ature compressor
cooling
Switch-off temper-
ature compressor
heating
Switch-on temper-
ature compressor
heating
Switch-on/switch-
off hysteresis com-
pressor
Correction value of
displayed room
temperature
Maximum time during which the evap-
oration
b1Fan speed 17(x)
c(x)Access code8(x)Firmware version
Display of room temperatureDisplay of room temperature
temperature may
be below Parame-
ter 1, “Switch-off
temperature, com-
pressor cooling”
31
Page 36
10 Overview of Programming FunctionsBlueCool S Series
10.1Entering setting levels
10.1.1Entering Setting level 1
If the air-conditioning system is switched on, Setting level 1
can be reached by repeatedly pressing the function button
.
First the fan speed “bx” appears, then the evaporator
temperature “Exxx”.
If the access code is activated, the display “CodE” appears
on the digital display.
Those who do not want to begin on Setting level 1 can
return to the setting of the fan speed by pressing the
function button .
The access code must be entered to begin on Setting level
1. To do this, select the access code by pressing the Plus
button or Minus button (factory setting to 64) and
confirming with the function key . Then the selection
menu for an operating mode “Fx” as the first setting
parameter is accessed.
If the access code is deactivated (set to 00), the code entry
is skipped and Setting level 1 is accessed directly after the
evaporator temperature is displayed.
Pressing the function button again runs through the
further steps of Setting level 1. For additional information,
see Chapter 10.2.1, Table 3.
Pressing the function button advances one step in the
programming process.
For additional information, see Chapter 10.2.1, Table 4.
Setting level 2 can be exited at any time with the “On/Off"
button .
“memo” briefly appears on the digital display to show that
the changes have been saved.
10.1.3Entering Setting level 3
Switch on the system.
Set the setpoint temperature 29 °C (or 85 °F).
Switch off the system by pressing the “On/Off” button
.
Press the Plus button and Minus button simul-
taneously for several seconds.
If the access code is deactivated, the parameter for the
temperature unit appears in the display: “u.x”.
If the access code is activated, then the access code must
be entered first. Then the parameter for the temperature
unit appears: “u.x”.
The setting values can be changed with the Plus button
or Minus button
.
Setting level 1 can be exited at any time with the “On/Off”
button .
“memo” briefly appears on the digital display to show that
the changes have been saved.
10.1.2Entering Setting level 2
Switch on the system.
Set the setpoint temperature 15 °C (or 59 °F).
Switch off the system by pressing the “On/Off” button
.
Press the Plus button and Minus button simul-
taneously for several seconds.
If the access code is deactivated, the parameter for undervoltage switch-off appears in the display: “0.x”.
If the access code is activated, then the access code must
be entered first. Then the parameter for undervoltage detection appears: “0.x”.
The setting values can be changed with the Plus button
or Minus button .
Pressing the function button advances the
programming process by one step.
For additional information, see Chapter 10.2.1, Table 5.
Setting level 3 can be exited at any time with the “On/Off”
button .
“memo” briefly appears on the digital display to show that
the changes have been saved.
32
Page 37
BlueCool S Series10 Overview of Programming Functions
10.2Description of programming codes
10.2.1Operating level and Setting levels 1, 2 and 3
NOTE
The parameters from Parameter No. 2 can only
be displayed or set after the access code has
been entered.
Table 3 Parameter list of programming functions for operating level and setting level 1
DisplayParameterValue RangeAssignmentFactory Set-
bFan speed1 to 5, A1 = Speed 1
...
5 = Speed 5
A = Automatic
EEvaporator temperature-Display of evaporator
Operating level
FOperating mode01, 02, 03, 0701 = cooling only
UOperating voltage-Display of operating voltage
Fd.Number of dehumidifica-
tion cycles in 24 hours,
Setting level 1
hd.Heating time in dehu-
Operating mode F07
midification cycle
00 to 0301 = 1 cycle
01 to 9901 = 1 min.
temperature in °C or °F
02 = heating only
03 = automatic switching
between cooling and
heating
07 = Dehumidification
in V
02 = 2 cycles
03 = 3 cycles
...
99 = 99 min.
See Page
ting
A36
-36
0336
-36
0136
0136
cd.Cooling time in dehu-
midification cycle
01 to 9901 = 1 min.
...
99 = 99 min.
0136
33
Page 38
10 Overview of Programming FunctionsBlueCool S Series
Table 4 Parameter list of programming functions for Setting level 2
DisplayParameterValue RangeAssignmentFactory Set-
ting
0.Undervoltage switch-off180 to 210-19537
1.Activation or deactivation of IR remote control
2.Fan type (AC, EC, electronic silencer)
3.Thermostat-controlled
fan or permanently
switched-on fan
b5.Fan speed “5”25 to 1000= 0%
b4.Fan speed “4”25 to 1000= 0%
Setting level 2
b3.Fan speed “3”25 to 1000= 0%
b2.Fan speed “2”25 to 1000= 0%
00 to 0100 = deactivated
01 = activated
00 to 0200 = AC
01 = EC
02 = electronic silencer
00 to 0100 = thermostat-controlled
01 = permanent
100 = 100%
100 = 100%
100 = 100%
100 = 100%
0037
0037
0037
10037
6037
5037
4037
See Page
b1.Fan speed “1”25 to 10025 = 0%
100 = 100%
c.Access code for setting
levels
00 to 99-6438
3037
34
Page 39
BlueCool S Series10 Overview of Programming Functions
Table 5 Parameter list of programming functions for Setting level 3
7.Maximum time during
which the evaporator
temperature may be
below the “Switch-off
temperature, compressor cooling"
8.Firmware version-Display of control unit type-40
000 to 999 secx = x s30040
35
Page 40
10 Overview of Programming FunctionsBlueCool S Series
10.3Explanation of parameters
10.3.1Operating level
Parameter b: Fan speed
Setting range:1, 2, 3, 4, 5, A
Factory setting: A
This parameter is used to manually set the fan speed in
operation or to activate the automatic fan setting.
1 = Fan speed “1”
2 = Fan speed “2”
3 = Fan speed “3”
4 = Fan speed “4”
5 = Fan speed “5”
A = Automatic
Parameter E: Evaporator temperature
Display value of current evaporator temperature in °C or °F.
Display value only
10.3.2Setting level 1
Parameter hd: Heating time in dehumidification cycle
in operating mode F07
Setting range: 01 to 99
Factory setting: 01
This parameter is used to set the heating time in minutes in
a dehumidification cycle when the dehumidification mode
(F07) in Parameter F is activated.
For example 10 = 10 minutes
Parameter cd: Cooling time in dehumidification cycle
in operating mode F07
Setting range: 01 to 99
Factory setting: 01
This parameter is used to set the cooling time in minutes
during a dehumidification cycle when the dehumidification
mode (F07) in Parameter F is activated.
For example 10 = 10 minutes
Parameter F: Operating mode
Setting range: 01, 02, 03, 07
Factory setting: 03
The operating mode specifies whether the system only
cools, or heats or automatically switches between the two
operating modes. In addition, the dehumidification mode of
the system can be activated.
01 = cooling only
02 = heating only (reverse heating operation)
03 = automatic switching between cooling and heating
(reverse heating operation)
07 = dehumidification (dehumidification of cabin air by
cooling or heating)
Parameter U: Operating voltage
Display value of current operating voltage in V.
Parameter Fd: Number of dehumidification cycles in
24 hours in operating mode F07
Setting range: 01 to 03
Factory setting: 01
This parameter is used to set the number of dehumidifying
cycles when the dehumidification mode (F07) in Parameter
F is activated. The duration of the individual cycles is defined
with the parameter hd or cd.
00 = dehumidification mode deactivated
01 = 1 cycle every 24 hours
02 = 1 cycle every 12 hours
03 = 1 cycle every 8 hours
36
Page 41
BlueCool S Series10 Overview of Programming Functions
10.3.3Setting level 2
Parameter 0: Undervoltage switch-off
Setting range: 180 to 210
Factory setting: 195
The undervoltage switch-off is defined for a supply voltage
of 230 V. Dropping below the undervoltage threshold for
more than 5 seconds switches off the system. The error
message AAA is displayed.
ATTENTION
Reducing the value below the factory setting of
195 V can result in damage to the compressor.
Parameter 1: Activation or deactivation of IR remote
control
Setting range: 00, 01
Factory setting: 00
To use the optionally available remote control, this value
must be set to 01.
Although the Webasto digital displays are designed so that
interference with most TV models or household appliances
by the remote control is avoided, the user should note that
interactions can occur in certain cases.
In this case, the value should be set to 00.
Parameter b5: Fan speed “5”
Setting range: 25 to 100
Factory setting: 100
The speed at fan speed “5” can be set with this parameter.
If this value is adjusted, a permanent humming noise can
result when using an AC fan.
If electronic silencers are used, the speed on the AC fan
cannot be changed.
Parameter b4: Fan speed “4”
Setting range: 25 to 100
Factory setting: 60
The speed at fan speed “4” can be set with this parameter.
If this value is adjusted, a permanent humming noise can
result when using an AC fan.
If electronic silencers are used, the speed on the AC fan
cannot be changed.
Parameter b3: Fan speed “3”
Setting range: 25 to 100
Factory setting: 50
The speed at fan speed “3” can be set with this parameter.
If this value is adjusted, a permanent humming noise can
result when using an AC fan.
If electronic silencers are used, the speed on the AC fan
cannot be changed.
Parameter 2: Fan type
Setting range:00 to 02
Factory setting:00
Both AC fan motors (alternating current) and low-noise EC
fan motors can be used. If electronic silencers are used,
these can also be activated with this parameter.
00 = standard AC fan motor
01 = electronically commutated (EC) fan motor
02 = when optional electronic silencers are used
ATTENTION
If this parameter is changed without the
corresponding fan type being connected,
malfunctions can occur.
Parameter 3: Thermostat-controlled fan or
permanently switched-on fan
Setting range: 00, 01
Factory setting: 00
This parameter defines the behaviour of the fan when the
set setpoint temperature is reached in the cabin.
Parameter b2: Fan speed “2”
Setting range: 25 to 100
Factory setting: 40
The speed at fan speed “2” can be set with this parameter.
If this value is adjusted, a permanent humming noise can
result when using an AC fan.
If electronic silencers are used, the speed on the AC fan
cannot be changed.
Parameter b1: Fan speed “1”
Setting range: 25 to 100
Factory setting: 30
The speed at fan speed “1” can be set with this parameter.
If this value is adjusted, a permanent humming noise can
result when using an AC fan.
If electronic silencers are used, the speed on the AC fan
cannot be changed.
ATTENTION
Decreasing the speed in the fan speeds can
result in the fan no longer being able to start up
from a stop.
00 = Fan switches off thermostat-controlled when
setpoint temperature is reached.
01 = Fan remains switched on when setpoint temperature
is reached. Only cooling circuit is switched off.
37
Page 42
10 Overview of Programming FunctionsBlueCool S Series
Parameter c: Access code for setting levels
Setting range: 00 to 99
Factory setting: 64
The access code for the setting levels is stored in this
parameter to prevent accidental changing of the
programmed values.
The access code can be selected as desired in a value range
from 00 to 99.
If the value 00 is set, this function is deactivated. The access
code is not requested.
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BlueCool S Series10 Overview of Programming Functions
10.3.4Setting level 3
Parameter u: Temperature unit
Setting range: 00, 01
Factory setting: 00
Changing over the temperature display from °C to °F for all
temperature values
This parameter is used to set the minimum evaporator
temperature. If this temperature value is dropped below
during normal operation, then the compressor is switched
off immediately.
ATTENTION
Changing this value can result in impairment of
operation and damage to the air-conditioning
system.
This parameter is use to set the lower evaporator
temperature. If this temperature value is dropped below
during normal operation for the time set in Parameter 7,
then the compressor is switched off.
ATTENTION
Changing this value can result in impairment of
operation and damage to the air-conditioning
system.
This parameter is used to set the evaporator temperature at
which the compressor is to be switched on again. If this
temperature value is exceeded during normal operation,
and if the room temperature also has a corresponding value,
then the compressor is switched on.
ATTENTION
Changing this value can result in impairment of
operation and damage to the air-conditioning
system.
This parameter is used to set the condenser temperature at
which the compressor is to be switched on again. If this
temperature value is dropped below during normal
operation, and if the room temperature also has a
corresponding value, then the compressor is switched on.
ATTENTION
Changing this value can result in impairment of
operation and damage to the air-conditioning
system.
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10 Overview of Programming FunctionsBlueCool S Series
This parameter is used to set the switch-on hysteresis of the
setpoint temperature at which the compressor is switched
on.
In the heating mode, the switch-on temperature is
calculated = setpoint temperature minus switch-on/switchoff hysteresis.
In the cooling mode, the switch-on temperature is
calculated = setpoint temperature plus switch-on/switch-off
hysteresis.
If the switch-on temperature in the cabin is reached in
normal operation, and if the condenser or evaporator
temperature also reaches a corresponding value, then the
compressor is switched on.
ATTENTION
Changing this value can result in impairment of
operation and damage to the air-conditioning
system.
Parameter 8: Firmware version
Display value of current firmware version.
Resetting setting values to factory setting
This parameter resets to factory settings. In the process, the
following procedure must be complied with:
1) Select the display of the firmware version (8.xxx)
2) Continually press function button (5)
3) The firmware display flashes
4) “INIT” appears on the digital display
5) The function button (5) can now be released.
Parameter 6: Correction value of displayed room
temperature
Setting range: -5.5 to 5.5 °C
-9.9 to 9.9 °F
Factory setting: 0 °C
0°F
This parameter is used to calibrate the room temperature
display. The component tolerances of the sensor and the
evaluation electronics can be compensated.
ATTENTION
An incorrectly positioned cabin temperature
sensor cannot be adjusted in this way, even by
using this parameter.
Parameter 7: Maximum time during which the
evaporator temperature may be below Parameter 1,
“Switch-off temperature, compressor cooling"
Setting range: 000 to 999
Factory setting: 300
This parameter is used to set the time in which the
compressor still remains switched on, although the
evaporator has already reached the "Switch-off
temperature, compressor cooling".
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BlueCool S Series11 Inspection and Maintenance
2
34
1
5
11Inspection and Maintenance
ATTENTION
The fins of the evaporator can be damaged!
The finned pipes of the evaporator can easily be
bent. If damage to the fins occurs during
installation, make sure that they are correctly
aligned again to ensure the evaporator is
properly supplied with air.
It is recommended that a number of routine checks be
carried out at regular intervals and when switching on the
air-conditioning system so that the system continues to
function properly and maintains its performance level for
many years.
At least once a month,
the function of the air-conditioning
system must be checked. To do this, the system must be
switched on and must run for at least 10 minutes.
11.1Air filter
At least once a month, the air filter on the evaporator of the
air-conditioning system must be checked and cleaned if
necessary.
At least once a year
, the sea water circuit including the
condenser of the air-conditioning unit must be cleaned. The
time interval is dependent on the degree of soiling of the sea
water.
Soiling of the sea water circuit reduces the sea water flow
rate, which decreases the heat dissipation and can result in
high-pressure switch-offs.
If the condenser is soiled, the cooling or heating capacity of
the system decreases.
The sea water circuit is only to be cleaned by an expert
(installer or Webasto Service Centre).
11.3Electrical wiring
At least once a year, the electrical connections must be
checked for corrosion of the contacts and firm seating. The
mechanical strain reliefs of the lines must also be checked.
Pull the air filter upward out of the guide rails.
Clean the air filter with a vacuum cleaner and use water
to flush it if necessary.
Slide the air filter in to the air-conditioning unit again.
11.2Sea water circuit
The operation of the sea water circuit must always be
checked, especially after a longer absence.
Check immediately after each switch-on of the air-condi-
tioning system whether sea water flows out of the sea water outlet.
The minimum flow rates should be complied with.
Immediately switch off the air-conditioning system if no
sea water flows out after the compressor starts up.
At least once a week, check the sea water strainer for
At least once a month, check the entire sea water circuit
from the through-hull fitting to the sea water outlet for
leaks.
At least once a month, check condensed-water drainage
from the condensate tray and condensed-water drain line
for clear passage and leakage.
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11 Inspection and MaintenanceBlueCool S Series
11.4Checklist for inspection and maintenance
Table 6 Checklist for inspection and maintenance
Date
1Check the air filter on the evaporator and clean if necessary.
See Chapter 11.1 and Fig. 4, No. 8.
2Check the flow rate of the sea water circuit at the sea water
outlet.
See Chapter 11.2 and Fig. 8, No. 6.
3Check and clean the sea water strainer. Observe the
specifications of the filter manufacturer for this purpose.
See Chapter 11.2 and Fig. 8, No. 2.
4Check the entire sea water circuit for leaks.
See Chapter 11.2 and Fig. 8.
5Check the condensed-water drainage from the condensate
tray and condensed-water drain line for clear passage and
leaks.
See Chapter 11.2.
6Clean the sea water circuit.
See Chapter 11.2.
7Check the electrical connections for corrosion to the
contacts and firm seating.
See Chapter 11.3 and Fig. 22.
8Check the shaft seal of the pump and replace it if necessary
(does not apply to magnetically coupled pumps).
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BlueCool S Series12 Decommissioning
12Decommissioning
If the air-conditioning system is to be decommissioned, e.g.
during the winter, the following procedure must be
complied with:
Switch off the system by pressing the “On/Off” button
.
Disconnect the power supply.
Close all sea water valves.
Completely drain the sea water circuit, i.e. sea water lines,
sea water strainer, sea water pump and condenser, or fill
it with antifreeze.
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13 FaultsBlueCool S Series
13Faults
13.1Troubleshooting
CAUTION
Troubleshooting only by professionals!
Troubleshooting requires comprehensive
knowledge on the design and operation of the
individual components of the air-conditioning
system and may only be carried out by
authorised professionals trained by Webasto for
this purpose.
CAUTION
Use only genuine spare parts!
Always use genuine Webasto spare parts to
ensure fault-free operation of the airconditioning system.
If faults occur, the system must be switched off.
13.2Faults displayed on digital display
Certain faults are displayed directly on the digital display as
a code. At the same time, the air-conditioning system stops.
Each time one of these fault codes appears, the system is
stopped for approx. 60 seconds and then a restart is
attempted. If the same fault occurs more often than 6 times
consecutively within 30 minutes, the system is completely
shut down and the fault code is displayed continuously. No
further restarts are attempted and the user must reset the
system by switching it off or by temporarily interrupting the
power supply of the system.
Table 7 Fault codes
CodeDesignation
AAA: Undervoltage
Switch-off in case of undervoltage.
Power supply below set undervoltage value for longer than
5 seconds. Cause is probably excessively long power cable,
overloading or an insufficiently high power generator
output.
Measures:
Check setting (default setting: 195 V). Do not set below
195 V to prevent damage to the compressor and
subsequently voiding of the warranty.
Ensure a better power supply.
If necessary, retrofit Soft Starts which result in a lower startup current and therefore a lower voltage drop.
A01: Switch-off of compressor due to low pressure
•Pressure switch defective or power circuit interruption/
•Cooling mode:
•Heating mode:
short circuit.
Measures:
Check electrical wiring.
Replace pressure switch on Schrader valve.
Air supply insufficient
Measures:
Check air supply.
Difference between air inlet/air outlet temperature of
evaporator at least 4 K.
Sea water flow rate insufficient or sea water too cold
(Temperature below 6 °C).
Sea water strainer blocked or no intake.
Measures:
Check flow rate of sea water circuit at sea water outlet.
Difference between inlet-/outlet temperature of
evaporator at least 4 K.
At sea water temperature < 6 °C: no heating possible in
reverse heating operation.
Clean sea water strainer and bleed sea water circuit.
AAAUndervoltage
A01Switching off compressor due to low pressure
A02Switching off compressor due to high pressure
A09Fault in cabin temperature sensor
A10Fault in evaporator temperature sensor
INITInitialisation procedure or system blocked
tA11Status code dropping below/exceeding of mini-
mum or maximum evaporator temperature
respectively
44
•Refrigerant shortage.
Measures:
Check for refrigerant leak.
A02: Switch-off of compressor due to high pressure
•Pressure switch defective or power circuit interruption/
short circuit.
Measures:
Check electrical wiring.
Replace pressure switch on Schrader valve.
•Cooling mode:
Sea water cooling insufficient.
Sea water strainer soiled or no intake.
Measures:
Check flow rate of sea water circuit at sea water outlet.
The minimum flow rates must be complied with.
Clean sea water strainer and bleed sea water circuit.
Page 49
BlueCool S Series13 Faults
•Heating mode:
Air supply insufficient
Measures:
Check air supply.
Difference between air inlet/air outlet temperature of
evaporator at least 4 K.
A09: Fault in cabin temperature sensor
Cabin temperature sensor defective, interruption in power
circuit/short circuit.
Cabin temperature sensor not connected.
Measures:
Connect cabin temperature sensor or replace.
A10: Fault in temperature sensor of evaporator
Temperature sensor of evaporator defective or power circuit
interruption/short circuit.
Measures:
Check electrical wiring or replace sensor.
INIT: Initialisation procedure or system blocked
Electrical wiring defective, interruption in power circuit/
short circuit.
Measures:
Check cables and connections of digital display controller.
Replace defective cable, digital display or PCB.
tA11: Evaporator temperature setpoint exceeded
Status code tA11 is a reference to the fact that the
evaporator temperature has become too low in the cooling
mode or too high in the heating mode. The compressor is
switched off and, as soon as the evaporator temperature
has normalised, is switched on again.
• Check the air ducts/the fan.
If the air flow is interrupted with the compressor
running, the evaporator can completely freeze,
causing the entire air flow to be blocked.
• If the sea water circuit runs too slowly in the heating
mode, the sea water can freeze in the condenser and
blocking and damaging the system.
• Check the voltage level. Do not operate the system
continually with insufficient voltage.
• Check the setting of the fan speeds of the
parameters b1 to b5.
Correct if necessary.
• if the performance of the system is still unsatisfactory
after checking all of the above points, you should
check the refrigerant filling.
4. The compressor does run, however it switches off
continually before the set setpoint temperature has
been reached. The high-pressure and low-pressure
switch switch off the compressor due to an excessively
high or excessively low working pressure.
Check the correct operation of the refrigerant circuit.
5. An incorrect room temperature is displayed.
Cabin temperature sensor positioned incorrectly, fault
sources are present or display values are falsified.
Check whether the cabin temperature sensor is subject
to direct fault sources, like direct sunlight or devices
radiating heat.
Calibrate sensor or replace defective sensor.
NOTE
This status code is a system information and not
a fault which must be eliminated. When the
temperature for switching on again is reached,
the status display automatically disappears.
13.3Faults not displayed on digital display
1. After switching on, the system does not react.
Check the power supply, the supply line circuit breakers,
fuses on the PCB, etc.
2. The compressor starts up, however no sea water exits
from the sea water outlet.
• Check whether the shut-off valves are opened.
• Check whether the sea water strainer is clogged.
• Check whether the sea water pump is running. If the
pump does not run with the compressor switched
on, check the power supply to the sea water pump.
3. The compressor and the sea water pump are running,
but neither the heating mode nor the cooling mode
function satisfactorily.
• Allow the fan to run in the automatic fan mode.
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13 FaultsBlueCool S Series
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Webasto Thermo & Comfort SE
Postfach 1410
82199 Gilching
Germany
Visitors’address:
Friedrichshafener Str. 9
82205 Gilching
Germany
Internet: www.webasto.com
Technical Extranet: http://dealers.webasto.com
The telephone number of each country can be found
in the Webasto service center leaflet or the website of
the respective Webasto representative of your country.