Thermowell AIRJET User manual

12V Marine Air Conditioning
thermowell.com.au
Installation,
Operating & Maintenance
Manual

12V Marine Air Conditioning
thermowell.com.au
Installation, Operating & Maintenance Manual
Contents
1. Introduction .............................................................................................................................................................. 3
2. Warnings and precautions for use............................................................................................................................ 3
3. Description of the unit and main components of the refrigeration circuit .............................................................. 3
4. Symbols used ............................................................................................................................................................ 4
5. Installations – General Standards ............................................................................................................................. 4
5.2 Positioning of the units ........................................................................................................................................... 5
5.3 Connecting units to pipelines.................................................................................................................................. 5
5.3.2 Air distribution circuit ...................................................................................................................................... 7
6. Functional schemes................................................................................................................................................... 8
6.1. Symbols Used.................................................................................................................................................... 8
6.2. AIRJET Monobloc Unit....................................................................................................................................... 8
7. Safety devices............................................................................................................................................................ 8
8. Inspection and Maintenance .................................................................................................................................... 9
9. Troubleshooting...................................................................................................................................................... 10
10. Electrical Installation...........................................................................................................................................11
10.1. Cables.......................................................................................................................................................... 11
11. Regulatory references......................................................................................................................................... 11
12. Address................................................................................................................................................................ 12
Table of Figures
Figure 1 Main Components............................................................................................................................................... 3
Figure 2 Standard installation example ............................................................................................................................ 4
Figure 3 Unit Pickup Points ............................................................................................................................................... 5
Figure 4 Example of unit fixing points............................................................................................................................... 5
Figure 5 Installation of the sea water inlet ....................................................................................................................... 5
Figure 6 Example of Incorrect Sea Water installation ...................................................................................................... 7
Figure 7 Example of Correct Sea Water Installation ......................................................................................................... 7
Figure 8 Example of connection of the air duct to the fan ............................................................................................... 7
Figure 9 AirJet Sea Water Circuit ...................................................................................................................................... 8

12V Marine Air Conditioning
thermowell.com.au
1. Introduction
This user manual is intended for Airjet 12/24V series water-cooled
air conditioner powered by direct current. These units are designed
to be used in marine closed environment cooling applications from
small to medium sized vessels. They can be used in any application
as single block direct expansion units and installed in several rooms
separately or ducted, depending on the space available on board.
2. Warnings and precautions for use
The precautions described in this manual must be strictly
followed.
All the activities described must be carried out by an installer in
accordance with the regulations in force.
Remember that appropriate personal protective equipment
(protective gloves, safety glasses) must be worn when installing,
maintaining, or servicing the unit.
If in doubt about the installation procedures or operation of the
unit, contact your local dealer for assistance and information.
Improper installation or assembly of the unit or an accessory may
result in electric shock, short circuit, leakage, or damage to piping
or other parts of the unit.
RISK OF ELECTROCUTION
•Before making a connection or touching any electrical
components, disconnect the power supply.
NEVER touch any switch with wet fingers: electrical shock is
possible. Turn off all power sources before touching electrical
components.
To avoid the danger of electric shock, be sure to turn off the power
for at least 1 minute before working on electrical parts. Even after
1 minute, always measure the voltage at the capacitor terminals of
the main circuit or electrical parts.
DANGER:
DO
NOT
TOUCH
PIPING
AND
INTERNAL
COMPONENTS
•DO NOT touch the refrigerant piping, plumbing or
internal components during and immediately after operation. The
piping and internal parts may be very hot or cold, depending on the
operating condition of the unit.
Touching the piping or internal components may cause heat or cold
burns. To avoid the risk of injury, allow the piping and internal
components to return to an acceptable temperature level, or wear
protective gloves if necessary.
W
ARNING
•DO NOT touch accidentally leaked refrigerant directly, as
this can cause severe frost burns.
•DO NOT touch the refrigerant pipes during and
immediately after operation, as they can be very hot or very cold,
depending on the condition of the refrigerant flowing through the
pipes, the compressor and other parts of the refrigeration cycle. If
you touch the refrigerant pipes, your hands may be burned or
suffer frostbite. To avoid injury, wait until the pipes have returned
to room temperature. If it is necessary to touch them, be sure to
wear suitable gloves.
3. Description of the unit and main
components of the refrigeration
circuit
Figure 1 Main Components
1.Compressor
2.Evaporator
3.Fan
4.Sea condenser
5.Expansion valve
6.High pressure switch
7.Low pressure switch
8.Low pressure service outlet
9.High pressure service outlet
10.Air filter
11.Sea water inlet
12.Sea water outlet
The physical state of the refrigerant undergoes changes as it
circulates through the appliance. These changes are caused by the
following main components of the refrigerant circuit illustrated in
the figure above.
•Compressor
The compressor works like a pump and circulates the refrigerant. It
compresses the refrigerant vapours coming from the evaporator,
raising their pressure to a level that makes it possible for them to
liquefy, as they are subjected to in the condenser.

12V Marine Air Conditioning
thermowell.com.au
•Condenser
The function of the condenser is to change the state of the
refrigerant from gaseous to liquid. The absorbed heat of the gas in
the evaporator is dissipated through the condenser and the vapour
condenses to liquid.
•Filter
The purpose of the filter, which is installed downstream of the
condenser, is to retain impurities that could block the pipes and to
dispose of moisture in the gas.
•Expansion valve
The liquid refrigerant from the condenser enters the evaporator
after passing through an expansion valve. This valve brings the
pressure of the liquid refrigerant to a pressure at which it can easily
evaporate in the evaporator by absorbing the heat from the cooling
process fluid.
•Evaporator
The function of the evaporator is to absorb heat from the fluid
passing through it by cooling it. This is made possible by the
evaporation of the fluid from the condenser.
•Water inlet/outlet connections
The water inlet/outlet connections allow easy connection of the
appliance to the system's water circuit which leads to the points of
use.
For further details of the components used see § 5.3 Connecting
the units to the pipework
4. Symbols used
The warnings in this manual are classified according to their
severity and likelihood of occurrence.
DANGER
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
CAUTION
Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury. Can also be used to indicate
dangerous practices
NOTICE
Indicates
situations that can only cause
damage to equipment or property
INFORMATION
This symbol identifies useful tips or additional
information
Other types of hazards are represented with special symbols.
5. Installations – General Standards
5.1. Example of installation
The following figure shows an example of a standard unit
installation
Figure 2 Standard installation example
1.Unit
2.Junction box
3.Swivelling and lockable discharge port
4.Remote terminal
5.Wall control
6.Fuse holder
7.12V DC battery
8.Sea pump
9.Sea filter
10.Ball valve
11.Sea inlet
12.Outer casing discharge
13.Condensate drain
14.Flexible insulated pipe 80/100
15.Y-connector
16.Adjustable and lockable circular discharge outlet 100
The Instructions and precautions to be carried out in the
assembly of the unit are detailed in the following
paragraphs

12V Marine Air Conditioning
thermowell.com.au
Handling
ATTENTION
In order to avoid damage to the unit, never handle the unit by the
components of the refrigeration or hydraulic circuit (e.g., pipes).
Remove the unit from its packaging by firmly grasping either the sea
condenser and fan or the steel structure. Never grasp the unit by
other piping. See figure.
Figure 3 Unit Pickup Points
5.2 Positioning of the units
AIRJET line air conditioners must be installed inside the room to be
conditioned in a place that allows proper air circulation (free suction
section) and that is easily accessible for maintenance operations.
The unit must be firmly anchored to a fixed horizontal support by
means of the special stainless-steel brackets supplied (provide one
bracket on each side of the base, or 2 brackets on each of the long
sides), so as to avoid movement during the most severe conditions.
The brackets must be inserted on the edge of the condensation tray
and fixed to the horizontal plane using self-tapping screws or
through-bolts (see Fig.4).
Figure 4 Example of unit fixing points
It is recommended to install the unit on anti-vibration mounts in
order to limit the transmission of vibrations induced by the
operation of the machine to the hull structure. Care must be taken
when choosing supports that have sufficient capacity to support the
weight of the machine.
Although the air conditioner is extremely quiet, it is always a good
idea to consider noise emissions when choosing the position.
5.3 Connecting units to pipelines
The connection of the unit to the sea water circuit piping is made
by directly connecting the piping to the appropriate inlets and
outlets identified in Fig.1 of this manual. In any case, the
connection between the sea water pipe and the condenser must be
secured using a pair of stainless-steel clamps for each connection.
It is recommended that all connections are made in such a way that
they can be easily removed to insulate the machine during
maintenance or repairs.
The condensate drainage pipework should be connected as in Fig.2
and secured using the stainless steel or plastic ties provided with
the unit.
5.3.1 Sea water circuit
The best solution for the sea water circuit is to use a sea inlet
reserved exclusively for the air conditioning system. It is advisable
to use a paddle sea inlet with filtering grooves with convexity in a
direction that favors the pressure in the cooling circuit for the use
of the air conditioner also while sailing if the sea state allows it (see
Figure 5. Installation of sea water inlet). If the boat does not have
a free sea inlet, it is advisable to install it as close as possible to the
keel - especially for planning boats - in order to avoid or, at least,
limit as much as possible the entry of air into the circuit during
navigation.
.
Figure 5 Installation of the sea water inlet
Alternatively, it is possible to use an existing suction line for on-
board services (e.g., serving the bathrooms or a generic sea water
pump) with a T-connector and a dedicated gate valve, provided that
the section of the sea water line is sufficient for the simultaneous
supply of the sea circuit of the air conditioning and the other
utilities. In this case, it is always advisable to fit a clapet check valve
upstream of the filter in order to make this line independent from
those of the other services.

12V Marine Air Conditioning
thermowell.com.au
WARNING
It should also be noted that under no circumstances should sea
water for the air conditioning system be sucked in from the engine
or generator cooling circuit, as the powerful pumps of such
equipment would overcome the head of the sea air conditioning
circuit circulation pump, preventing it from working properly.
In the case of installation of more than one unit, it is possible to use
a single sea water inlet, provided that it is suitably sized (in case of
doubt contact Thermowell Technical Department).
The sea water circuit must be as short as possible, without siphons
or choked bends that could prevent the priming of the electric
pump or increase the pressure drop in the circuit itself with a
consequent decrease in the efficiency of the chiller. The part of the
pipework between the sea inlet valve (or the suction T on the
service line) and the electric pump must be as short as possible; a
full bore shut-off valve must be installed in this section to interrupt
the flow of water and facilitate maintenance operations. This valve
should always be closed before the boat is hauled out to leave the
pump full of water, so that it can be reactivated when the boat is
launched; it should then be checked that it is reopened
immediately after the boat has been launched and before any use
of the system.
The seawater filter must always be installed under head upstream
of the pump on the suction line. It is advisable to install the filter in
a position where it can be easily seen, cleaned, and inspected;
during operation, it also acts as a warning light to check the passage
of sea water in the circuit.
After a cleaning operation it is necessary to:
•Always purge the air from the top of the filter and ensure
that the circuit is properly filled.
The use of the filter prevents the entry of impurities and dirt into
the pump and the machine, safeguarding its operation and
durability. The absence of the filter in the seawater circuit is a
condition for the forfeiture of the pump and cooling unit warranty.
WARNING
Whenever you leave the boat, the sea water
circuit must be closed by means of a special tap
in order to avoid dangerous situations due to
possible accidental damage to the circuit
components.
The seawater circuit must run continuously uphill to the unit, both
in the section from the sea inlet to the pump and in the section from
the pump to the unit itself. After passing through the heat
exchanger, the circuit may still be uphill or downhill, up to the
discharge into the sea, which must always be kept above the
waterline so that the circuit is self-purging of any air bubbles.
The seawater inlet and outlet are marked by special labels. The
connection between the pipe and the other components of the
circuit (sea inlet, gate valve, filter, conditioning unit, sea discharge)
must be made using stainless steel hose clamps (preferably two on
each connection).
The discharge of water overboard above the waterline should be
positioned in such a way as to minimise the noise of the gush, so as
not to disturb your boat and neighbors. Once the system is in
operation, it is important to check that the water flows properly
through the drain. If the drain is to be positioned below the
waterline, a ball valve and/or non-return valve must be installed
upstream of the drain; in this case, it is advisable to install a pump
that is oversized with respect to the system's demand
(approximately 15-20%), in order to overcome the resistance
exerted by the sea water on the drain circuit. It should be borne in
mind, however, that the installation of the drain under head causes
difficulties in cleaning the circuit.
Fig.6 and Fig.7 show all the examples and errors to be avoided
during installation.

12V Marine Air Conditioning
thermowell.com.au
NON CORRETTO
LE TUBAZIONI NON DEVONO PRESENTARE
SIFONI, LOOP O PUNTI ALTI SENZA SFOGO
PER L' ARIA
Pompa mare
JESM 5
Filtro
USCITA
ACQUA MARE
INGRESSO
ACQUA MARE
Unità
Motocondensante
LIVELLO ACQUA
DI MARE
NON CORRETTO
LE TUBAZIONI NON DEVONO PRESENTARE
SIFONI, LOOP O PUNTI ALTI SENZA SFOGO
PER L' ARIA
Pompa mare
JESM 5
Filtro
USCITA
ACQUA MARE
INGRESSO
ACQUA MARE
Unità
Motocondensante
LIVELLO ACQUA
DI MARE
POMPA E FILTRO DEVONO ESSERE MONTATI
ENTRAMBI AL DI SOTTO DEL LIVELLO DEL MARE
NON CORRETTO
Pompa mare
JESM 5
Filtro
USCITA
ACQUA MARE
INGRESSO
ACQUA MARE
Unità
Motocondensante
LIVELLO ACQUA
DI MARE
Figure 6 Example of Incorrect Sea Water installation
CORRETTO
LINEA DI ASPIRAZIONE IN SALITA CONTINUA, LINEA DI
SCARICO IN DISCESA CONTINUA.
PREVEDERE DUE FASCETTE PER OGNI GIUNZIONE
Pompa mare
JESM 5
Filtro
Valvola a
sfera
USCITA
ACQUA MARE
INGRESSO
ACQUA MARE
Unità
Motocondensante
LIVELLO ACQUA
DI MARE
Figure 7 Example of Correct Sea Water Installation
5.3.2 Air distribution circuit
For the air distribution circuit, a high quality insulated flexible
ducting reinforced with an internal steel spiral is used. The air inlets
must be mounted as high as possible in order to ensure optimal air
circulation in the room, preventing the air from flowing back
directly to the air intake grille or to the thermostat. If this is not
possible, install the nozzles at the bottom but with the jet pointing
upwards. The connection between the air conditioner and the
outlet is made through the flexible duct supplied and secured using
the plastic clamps.
The same procedure must be adopted to connect the duct to any
branch T's for air distribution in adjacent rooms. The distribution of
the treated air towards the delivery outlets can be done using rigid
ducts already present in the boat structure, as long as they have a
suitable section and anti-condensation insulation.
To ensure correct operation of the machine, the length of the pipes
must not be exceeded, avoiding bends which, if present, must have
a large radius and must be free of bottlenecks as far as possible.
Flexible air ducts should be mounted directly on the fan outlet and
those bent at right angles should be avoided as they significantly
restrict air flow. An example of a correct installation is shown in
Fig.8.
Figure 8 Example of connection of the air duct to the fan
For the installation of more than one supply outlet with
connection through a branch T, it is suggested to facilitate the
farthest outlet by adjusting the baffle on the inside of the Y or T.
In case of doubt contact Thermowell Technical Department.
The suction section of the air conditioner is equipped with a filter.
The unit must be mounted so that the filter can be easily removed
for maintenance. In some cases, it may be necessary to also duct
the air intake. In these cases, it is advisable to contact
Thermowell's technical department.
5.3.3 Condensate drainage circuit
The base on which the air conditioners rest also acts as a
condensation collection tank that collects the condensation
produced during operation. This tank is equipped with two small
stainless-steel pipes located on the two short sides of the casing, to
which the condensation discharge pipe is connected. Use the
stainless-steel clamps supplied to make the connection. The unit
must be positioned compatibly with the need to create a
condensation discharge line with a downward slope (generally as
low as possible in the room to be air-conditioned (for example
under a seat or bunk). It is therefore necessary to install the units
at a suitable height to provide a certain slope to the drain line
mentioned above.
Care must be taken when installing the condensation drainage
system as the operation of the air conditioner can produce a
significant amount of condensation which, if not drained properly,
could cause damage to the boat's furnishings.

12V Marine Air Conditioning
thermowell.com.au
It is also advisable that the condensate drainage pipe descends
vertically for at least 3cm from the collection tray (it would be
advisable to avoid that the first part of the circuit is straight, as this
could cause a deposit of condensate water that could flow back into
the tray following the oscillating movements of the boat) and then
continues without creating delocalised counter slopes along the
boat's interior.
against delocalised slopes along the evacuation line.
The outboard condensate drain must be well above the waterline.
If it is not possible to discharge into the sea, discharge into the bilge
at the closest possible position to the suction inlet of the regulation
bilge pump. In some cases, an additional water collection tank may
be created and emptied through a small outboard pump. Its
placement in the daily bilge of the engine compartment is strongly
discouraged. In any case, once the circuit has been installed, it is
advisable to check the efficiency of the evacuation system by
pouring water into the collection tray.
6. Functional schemes
6.1. Symbols Used
C
Compressor
CWR
Condenser
EWR
Evaporator
FE
Filter
MA
High Pressure manometer
MB
Low Pressure manometer
PA
Hight Pressure switch
PB
Low Pressure switch
PS
Service sockets
VA
High pressure safety valve
VE
Expansion valve
VL
Liquid line solenoid valve
VS
Liquid indicator
Four-way valve
6.2. AIRJET Monobloc Unit
Figure 9 AirJet Sea Water Circuit
7. Safety devices
•High pressure switch
The high-pressure switch is installed on the discharge line of the
unit and monitors the condensing pressure (pressure at the
compressor discharge). When this pressure exceeds the safety
range, the high-pressure switch trips and stops the refrigerant
circuit.
Once it has tripped, it is automatically reset when it returns to its
operating range. If it is tripped a second time, the electronic
control stops operation permanently. To restore correct
operation, the unit must be switched off and on again after
researching and resolving the causes of the malfunction (see
Troubleshooting).
•Low pressure switch
The low-pressure switch is installed on the suction pipe of the
appliance and measures the evaporator pressure (pressure at the
compressor inlet). If the pressure is too low, the pressure switch is
activated, and the circuit is stopped.
Once tripped, it is automatically reset a first time. If it trips a second
time, the electronic control stops the operation permanently. To
restore correct operation, the unit must be switched off and on
again after researching and resolving the causes of the malfunction
(see Troubleshooting).
•Antifreeze protection
The frost protection during operation of the unit prevents the
water in the evaporator from freezing. When the temperature of
the water coming out of the evaporator becomes too low, the
general controller deactivates the unit. When the water outlet
temperature returns to normal, the unit can be restarted. When
frequent frost protection occurs over a period of time, the frost
alarm is activated, and the appliance is stopped. It is necessary to
manually reset the alarm indicator in the controller

12V Marine Air Conditioning
thermowell.com.au
.
•Compressor gas safety release valve
The gas safety valve is part of the compressor When the pressure
rises (>40 Bar) the plug starts to lift and the process medium starts
to flow and is forced out radially over the entire surface of the plug.
When the pressure drops below the set value (blow-down
pressure) the reverse effect occurs and the valve closes completely
in a very short time.
•Compressor overheating protection
Located on the compressor driver, it stops the compressor when
the temperature exceeds 100°C.
•Compressor low/high voltage protection
Located on the compressor driver, it stops the compressor when
the voltage drops below 10V or exceeds 16V.
.
8. Inspection and Maintenance
It is highly recommended that a number of inspections are carried
out on the unit at regular intervals in order to maintain its high level
of functionality.
At least once a month check that the unit is working properly by
leaving it switched on for at least 10 minutes.
Air filter
At least once a year:
inspect the air filter on the unit's evaporator and clean if necessary.
•Remove the fixing clips
•Clean the filter with a jet of pressurized air or use water
if necessary.
•Replace the filter with the retaining clips.
Sea water circuit
An inspection of the sea water circuit should always be carried out,
especially after a long period of absence.
Every time the unit gets turned on:
Check that water flows regularly in the sea water circuit.
At least once a week:
•Inspect the sea water filter
•Clean if necessary
At least once a month
•Check the entire sea water circuit, from the through-hull
fitting to the water outlet, for leaks.
•Check the condensate outflow to ensure that the passage
is clear and there are no leaks in the drain line.
ATTENTION an expert must clean the sea water filter
•Clean the circuit including the condenser of the unit
Electrical connections
At least once a year, the electrical connections must be checked
for possible corrosion of the contacts. The mechanical tightness of
the lines must also be checked.
The following part of the manual contains useful information for
diagnosing and correcting certain faults that may occur in the
equipment.
Before embarking on a diagnosis procedure, a thorough visual
inspection of the appliance should be carried out to check that
there are no obvious defects, such as loose hydraulic connections
or faulty electrical connections.
Careful reading of this part of the manual is recommended before
contacting the Service Department.
If a safety device is triggered, stop the appliance, and find out the
reason for the triggering of the device before resetting it. Under
no circumstances should a safety device be altered from its
factory setting. In any case, contact the Service Department if you
are unable to identify the cause of the problem.

12V Marine Air Conditioning
thermowell.com.au
9. Troubleshooting
Symptom 1: A circuit does not start
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-
UP ACTION
One of the following safety
devices has tripped:
Low Pressure switch
High Pressure switch
Protection against phase
reversal

Antifreeze
See symptom 2 'One of the
following safety devices has
tripped
Timing period for preventing
close restarts has not yet
elapsed
The circuit can only be
restarted after about 3
minutes.
Symptom 2: One of the following safety devices has tripped
Low Pressure Switch
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-
UP ACTION
The refrigerant charge is
depleted.
Check for leaks and
eliminate them if found.
Restore optimum charge
High Pressure Switch
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-
UP ACTION
The water flow rate through
the condenser is too low
Increase the water flow rate
and/or check that the filter
is not clogged
Flow switch trip
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-
UP ACTION
No water flow rate
Check the sea water pump
Contactor burnt out
Contact an authorised
technician for replacement
Possible interruptions of
electrical connections
Contact an authorised
technician to restore the
correct connection.
Triggering of frost protection
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-
UP ACTION
Water flow is low
Increase water flow rate
The temperature of the water
entering the evaporator is low
Increase incoming water
temperature
Defective probe or instrument
Check that the probe or
measuring instrument is not
defective
Compressor contactor
damaged and the circuit
always remains closed
Check the correct state of
the contactor
•Symptom 3: Unit shuts down shortly after
activation.
POSSIBLE CAUSE
CORRECTIVE OR FOLLOW-UP
ACTION
One of the safety devices
has tripped
Check safety devices
The voltage is too low
Measure the voltage at the
power supply panel and, if
necessary, also in the
electrical cabinet of the
appliance
ALARMS
WARNING: BEFORE RESETTING AN ALARM, IDENTIFY THE
CAUSE OF THE ALARM.
Alarms indicate a situation potentially dangerous for the
integrity of the machine.
Before resetting the alarm, identify and remove the cause of
the blockage: a repeated reset may cause irreversible
damage.
For this reason, the reset is manual, i.e., a reset from the
keyboard is necessary (provided that the cause has been
removed).
For further information, consult the enclosed operating
manual

12V Marine Air Conditioning
thermowell.com.au
10. Electrical Installation
10.1. Cables
Main’s power must be supplied by means of a fuse or a switch with
a corresponding rating. To make the following connections, use PVC
insulated three-core, four-core or multi-core cables with copper
conductors laid in accordance with the established conditions. The
dimensions of the cables should be selected for 100% of the rated
currents of the consumers. This table is a simple reference for
correct cable sizing.
FULL LOAD
CURRENT
CABLE DIMENSION
[A]
[mm2]
80
10mm
100
16mm
The flow rates shown in the above table have been defined at a
conventional ambient temperature of 30°C (it is assumed that the
temperature may occasionally reach 35°C). If the ambient
temperature is lower than the conventional temperature, the flow
rate increases, but if the temperature increases, the flow rate
decreases. The following table shows these room temperature
correction coefficients.
Air Temperature in °C
Coefficients
for flow rate
10
1,29
15
1,22
20
1,15
25
1,07
30
1
35
0,93
40
0,82
45
0,61
50
0,56
,
11. Regulatory references
The main reference standards are listed below:
UNI EN 14511-1:2018 Air conditioners, liquid chillers, and heat
pumps with electrically driven compressors for space heating and
cooling, and process cycle chillers with electrically driven
compressors - Part 1: Terms and definitions
UNI EN 14511-2:2018 Air conditioners, liquid chillers, and heat
pumps with electrically driven compressors for space heating and
cooling, and process cycle chillers with electrically driven
compressors - Part 2: Test conditions
UNI EN 14511-3:2018 Air conditioners, liquid chillers, and heat
pumps with electrically driven compressors for space heating and
cooling, and process cycle chillers with electrically driven
compressors - Part 3: Test methods
UNI EN 14511-4:2018 Air conditioners, liquid chillers, and heat
pumps with electrically driven compressors for space heating and
cooling, and process cycle chillers with electrically driven
compressors - Part 4: Requirements
UNI EN 378-1:2017 Refrigeration systems and heat pumps - Safety
and environmental requirements - Part 1: Basic requirements,
definitions, classification, and selection criteria
UNI EN 378-2:2017 Refrigerating systems and heat pumps - Safety
and environmental requirements - Part 2: Design, construction,
testing, marking and documentation
UNI EN 378-3:2017 Refrigerating systems and heat pumps - Safety
and environmental requirements - Part 3: Installation site and
personal protection
UNI EN 378-4:2017 refrigerating systems and heat pumps - Safety
and environmental requirements - Part 4: Operation, maintenance,
repair, and recovery
UNI EN 1736:2009 Refrigeration plants and heat pumps - Flexible
piping elements, vibration isolators, expansion joints and non-
metallic pipes - Requirements, design, and installation
UNI EN 1861:2000 Refrigeration systems and heat pumps - System
flow diagrams and diagrams of piping and instrumentation - Layout
and symbols
UNI EN 12178:2017 Refrigerating systems and heat pumps - Liquid
level indicators - Requirements, testing and marking
UNI EN 12263:2000 Refrigerating systems and heat pumps - Safety
switching devices for pressure limitation - Requirements and tests
UNI EN 12284:2004 Refrigerating systems and heat pumps - Valves
- Requirements, testing and marking
UNI EN 12828:2014 Heating systems in buildings - Design of water
heating systems
UNI EN 12831-1:2018 Energy performance of buildings - Method for
calculating design heat load - Part 1: Heat load for space heating,
Module M3-3
UNI EN 13136:2019 Refrigeration plants and heat pumps - Pressure
relief devices and associated piping - Calculation methods

12V Marine Air Conditioning
thermowell.com.au
12. Address
COMPANY
NAME
T
HERMOWELL
A
USTRALIA
&
N
EW
Z
EALAND
P
TY
LTD
H
EAD
O
FFICE
Unit 7/29 Wellard Street
Bibra Lake. WA 6163
TELEPHONE
[phone]
WEBSITE
www.thermowell.com.au
EMAIL ADDRESS
[e-mail]