Webasto FCF 10,000 BTU User manual

Installation / Operation Manual
Models:
FCF 6,000 BTU (115V & 230V)
FCF 10,000 BTU (115V & 230V)
FCF 12,000 BTU (115V & 230V)
FCF 16,000 BTU (115V & 230V)
FCF 20,000 BTU (230V)
FCF 25,000 BTU (230V)
FCF Platinum
Marine Air Conditioner Series

For proper installation and operation, please read all instructions carefully. Please be aware of the following items:
(1) If this unit fails to operate normally, please contact a Webasto Authorized Dealer as soon as possible and provide
the following information:
•Content on the nameplate (serial number, model number, and cooling capacity).
•Vessel Information (year, make, model, hull ID)
•Malfunction details (before and after the malfunction occurs).
(2) ALWAYS follow Webasto installation and repair instructions and heed all WARNINGS.
(3) Webasto rejects any liability for problems and damage caused by the system being installed by untrained
personnel.
(4) NEVER attempt to install or repair a Webasto heating system unless you have successfully completed Webasto
factory training and have the technical skills, technical information, tools and equipment required to properly
complete the necessary procedures. Only genuine Webasto parts may be used.

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Contents
1 SAFETY PRECAUTIONS ................................................................................................................................................. 5
2 INTRODUCTION ............................................................................................................................................................. 5
3 OVERVIEW...................................................................................................................................................................... 6
3.1 OUTLINE DRAWING ............................................................................................................................................................6
3.2 HOW IT WORKS .................................................................................................................................................................6
3.3 OUTLINE DIMENSIONS ........................................................................................................................................................7
4 INSTALLATION ............................................................................................................................................................... 8
4.1 UNPACKING AND INSPECTION .............................................................................................................................................8
4.2 SAFETY CONSIDERATIONS...................................................................................................................................................8
4.3 THE SIZE OF SEALED ROOM .................................................................................................................................................9
4.4 PLACEMENT OF SYSTEM .....................................................................................................................................................9
4.5 CONDENSATE DRAINS.......................................................................................................................................................10
4.6 BLOWER ASSEMBLY..........................................................................................................................................................11
4.7 MOUNTING BRACKETS......................................................................................................................................................11
4.8 SUPPLY &RETURN AIR GRILLES AND TRANSITION BOXES .................................................................................................11
4.9 DUCTING ..........................................................................................................................................................................11
4.10 SEAWATER PUMP AND PLUMBING ..................................................................................................................................12
4.11 ELECTRICAL CONNECTIONS,GROUNDING AND BONDING ................................................................................................13
4.12 MANUAL CONTROLLER INSTALLATION ............................................................................................................................14
4.13 ELECTRIC BOX INSTALLATION ..........................................................................................................................................15
4.13.1 (6K, 10K, 12K, 16K) ................................................................................................................................................15
4.14 INSTALLATION CHECKLIST (REVIEW PRIOR TO INSTALLATION).........................................................................................17
4.15 WIRING DIAGRAMS........................................................................................................................................................18
5 OPERATION .................................................................................................................................................................. 22
5.1MANUAL CONTROLLER OPERATION ..................................................................................................................................22
5.2 POWER ON/OFF..............................................................................................................................................................23
5.3 FAN CONTROL .................................................................................................................................................................23
5.4 TEMPERATURE SETTING ....................................................................................................................................................23
5.5 MODE SETTING ................................................................................................................................................................23
5.6 DISPLAY FAHRENHEIT OR CENTIGRADE..............................................................................................................................23
5.7 ERROR CODES ..................................................................................................................................................................24
5.8 KEY LOCK.........................................................................................................................................................................24
5.9 CHECKING VOLTAGE FUNCTION.........................................................................................................................................24
5.11 AUTO –OFF FUNCTION OF THE MANUAL CONTROLLER.....................................................................................................25
6 TROUBLESHOOTING ................................................................................................................................................... 26
7 MAINTENANCE ............................................................................................................................................................ 28
7.1 REVERSING VALVES ...........................................................................................................................................................28
7.2 SEAWATER STRAINER........................................................................................................................................................28
7.3 BLOWERS .........................................................................................................................................................................28
7.4 CONDENSER COIL CLEANING.............................................................................................................................................28
7.5 RETURN AIR FILTERS .........................................................................................................................................................29
7.6 WINTERIZATION................................................................................................................................................................ 29
7.7 LIMITED WARRANTY.........................................................................................................................................................30

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1 Safety Precautions
Means items that must be forbidden! Otherwise, it may lead to personal injury or death or serious damage.
Means items that must be followed! Otherwise, it may lead to personal injury or property loss.
2 Introduction
Thank you for your purchase. No matter which of the following features was the reason for your purchase, we are sure
it will meet your needs and give many years of efficient and trouble free use. Those marine air conditioners are
designed for marine applications incorporating the following features:
1）Compact design
2）High efficiency rotary compressors (6-25K)
3）Cupronickel condenser coil
4）Raised lance fin designed evaporator coil
5）Polyester coated 2” (50mm) deep drain pan with two condensate drain locations
6）Anti-vibration base pan
7）Pre-charged and pre-wired systems for easy connections
8）3-speed fan motor. This eliminates all harmonic sounds and rumbles.
9）Rotatable blower assembly
The controller offers the most technologically advanced design specifically made for the unique requirements of marine
air conditioning. The controller has been designed with the following "user friendly" features:
1) Non-volatile memory
2) Low voltage display panel
3) LED cabin temperature displayed in Fahrenheit or Celsius
4) Multiple fan speed selections
5) Compressor pressure fail safe protection
6) Moisture mode cycle for humidity control
This manual is intended to provide the information necessary to ensure proper installation, operation, and
maintenance of the unit. Improper installation can result in unsatisfactory performance and/or premature failure of
these units. Before proceeding, please read this manual completely. In the interest of product improvement,
specifications and design are subject to change without prior notice.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance. This product must
not be disposed together with the domestic waste. This product must be disposed at an authorized
place for recycling of electrical and electronic appliances.

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3 Overview
3.1 Outline Drawing
3.2 How It Works
Your self-contained air conditioner consists of four main components and a refrigerant gas circulating through the
system. The BLOWER draws warm cabin air across the fins on the EVAPORATOR where the heat from the air is
transferred to the refrigerant in the evaporator coil. As the refrigerant evaporated from a liquid into a gas, it absorbs
the heat from the cabin air. The COMPRESSOR then compresses the refrigerant gas and pumps it through the outer
tube in the CONDENSER COIL. The seawater pump circulates cool seawater through the inner tube in the condenser
coil; this cools the refrigerant and condenses it into a liquid. The heat from the refrigerant is exchanged to the seawater
and discharged overboard. The liquid refrigerant is then passed through the EVAPORATOR COIL and the cycle repeats;
removing heat from the cabin air lowering its temperature. The cooled air is blown through the ducting and out the
supply air grille(s). For reverse cycle heating, the refrigerant flows in the opposite direction through the reversing valve.
Heat is transferred from the seawater in the condenser coil to the refrigerant and then to the air blowing through the
evaporator into the cabin. Seawater temperature will directly affect the A/C's efficiency. This A/C system can effectively
cool your boat in water temperatures up to 90°F and heat in water temperatures as low as 40°F.

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3.3 Outline Dimensions
Units: mm
A
B
C
D
E
F
FCF 6,000 BTU 115V
285 295
408 91.5
16 19
FCF 6,000 BTU 230V
FCF 10,000 BTU 115V
380 310
FCF 10,000 BTU 230V
FCF 12,000 BTU 115V
549
330
320
119.4
FCF 12,000 BTU 230V
FCF 16,000 BTU 115V
619 343
FCF 16,000 BTU 230V
FCF 20,000 BTU 230V
529 386 595
FCF 25,000 BTU 230V

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4 Installation
4.1 Unpacking and Inspection
When the equipment is received, all items should be carefully checked to ensure there is no damage from shipping.
Move units in the normal "up" orientation as indicated by the arrows on each carton. Examine by removing the units
from the cartons if necessary. If the unit is damaged, the carrier should make the proper notation on the delivery
receipt acknowledging the damage.
4.2 Safety Considerations
VERY IMPORTANT: Never install your air conditioner in the bilge or engine room areas. Ensure that the selected
location is sealed from direct access to bilge and/or engine room vapors. Do not terminate condensate drain line within
3’ (914mm) of any outlet of engine, generator exhaust system, compartment housing an engine or generator, or in a
bilge, unless the drain is connected properly to a sealed condensate or shower sump pump. Seal all cabin sole
penetrations around condensate hoses to eliminate harmful bilge fumes in the cabin living spaces.
Installation and servicing of this system can be hazardous due to system pressure and electrical components. When
working on this equipment, always observe precautions described in the literature, tags and labels attached to the unit.
Follow all safety precautions. Wear safety glasses and work gloves and place a fire extinguisher close to the work area.
The following is a summary of the labels on the unit:
DANGER: Electrical shock hazard. Disconnect voltage at main panel or power source before opening
any cover. Failure to comply may result in injury or death.
WARNING:
This component does not meet federal requirements for ignition protection. Do not install
in spaces containing gasoline engines, tanks, LPG/CPG cylinders, regulators, valves or fuel
line fittings. Failure to comply may result in injury or death.
NOTICE:
This component is charged with Hydro chlorofluorocarbon (Hydro fluorocarbon) refrigerant
R410A. Effective July 1, 1992, it shall be unlawful for any person to knowingly vent or
otherwise knowingly release any class 1 (CFC) or class 2 (H CFC) substance as a refrigerant
in a manner which permits such substance to enter the atmosphere per the clean air act of
1990. Public law 101-549 title IV section 608-c. Failure to comply may result in severe
penalties, including fines and imprisonment.
CAUTION:
To minimize the hazard of electrical shock and personal injury, this component must be
effectively grounded. Refer to the installation guidelines for further information. Caution!
High compressor temperature is normal. Do not touch!

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4.3 The size of sealed room
The size of sealed room should not be too small; otherwise it will affect the unit normal functionality. See diagram
below.
4.4 Placement of System
Selecting a good location for your air conditioner is the most important part of your preparation. Be sure to consider
the size of the area you are cooling, the air distribution needs, and the size of the unit you have chosen. Keeping in
mind that cool air has a tendency to fall; it is highly recommended that you locate the supply air grille as high as
possible in the cabin. Don’t leave the flexible ducting too long; otherwise it will lower the efficiency of the unit. Refer
to the proceeding diagram as an example.

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Tools required:
◆Screws drivers
◆Pliers
◆Pipe wrench
◆Wire cutters/crimpers
◆Drill bit set
◆Jigsaw
◆Duct tape
◆Electrical tape
◆Teflon tape
◆Compound Sealant for
thru hull fittings
◆Hardware to secure
unit, pump, strainer,
grilles & control panel
The unit should be installed as low as possible, BUT NEVER IN THE BILGE OR
ENGINE ROOM AREAS, ENSURE THAT THE SELECTED LOCATION IS SEALED
FROM DIRECT ACCESS TO BILGE AND/OR ENGINE ROOM VAPORS. Installing
the unit as low as possible (such as under a V-berth, dinette seat or bottom of a
locker) and ducting the supply air as high as possible, creates an ideal airflow
condition. This type of installation will prevent short or premature cycling.
The unit should be positioned on a firm, level, horizontal surface and the
condensate drain line should run downward from the unit to a suitable drain
location. Plan all Connections, which must be made including ducting,
condensate drain, and seawater in and out, electrical power connections,
location of control, and seawater pump placement, to assure easy access for
routing and servicing.
4.5 Condensate Drains
The condensate drain pan is 2” (50mm) high with four drain locations. During
conditions of high humidity, condensate may be produced at a rate of
approximately 1/2 gallon per hour (1.9 liters per hour). Please pay more
attention, it is important to route condensate drains downward to a sump
pump. It is not recommended to route condensate drains to the bilge. After the
condensate drain installation is complete, test the installation by pouring water
into the pan and checking for good flow.
For installation of the condensate drain:
◆Attach a 3/4" or 5/8” reinforced hose (as required) to the hose barb and secure with stainless steel hose clamps.
◆Install the condensate drain hose downhill from the unit and aft to a sump.
◆Up to 4 drain fittings may be used and the two hoses (teed) together using a tee fitting provided there is a
minimum 2" drop from the bottom of the base pan to the tee connection.

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Do not terminate condensate drain line within three 3’ (914mm) of any outlet of engine,
generator exhaust systems, compartment housing an engine or generator, nor in a bilge, unless
the drain is connected properly to a sealed condensate or shower sump pump. Seal all
condensate hose penetrations.
4.6 Blower Assembly
You can achieve multi-directional supply air discharge from a single unit by rotating the blower to the desired position.
It is ideal for tight installations as 180° of rotation is available with which to position the blower. Its advanced design
allows the blower to be easily removed for rotating or servicing by removing 4 screws. Rotate the blower to allow the
most direct flow of air to the supply air grille.
4.7 Mounting Brackets
The A/C unit is supplied with a base pan that also serves as a
condensate pan. Mounting clip brackets (4) are provided to
secure the base pan to a flat, horizontal surface.
4.8 Supply & Return Air Grilles and Transition Boxes
Install the supply air grille as high as possible in a location that
will provide uniform air distribution throughout the cabin. Grille
louvers should be directed upward. The return air grille should
be installed as low and close to the A/C as possible to insure
direct uninterrupted airflow to the evaporator. The return air
grille should have a minimum four inches (4') of clearance in
front of it, free from any furniture or other obstructions. In no
instance should a supply air discharge be directed towards a
return air grille, as this will cause the system to short cycle.
Allow for adequate clearance behind the supply air grille(s) for
the transition box and ducting connection. See the
Maintenance section of this manual for return air filter cleaning
instructions.
Model 6K 10K 12K 16K 20K 25K
Min. Return Air
Grilles Size (re.)
75in²
(48500mm²)
100in²
(65680mm²)
105in²
(76514mm²)
160in²
(103584mm²)
240in²
(153028mm²)
240in²
(153028mm²)
4.9 Ducting
Good airflow is critical for the performance of the entire system. The static pressure should not exceed 100 Pa. It is
highly dependent on the quality of the ducting installation. The ducting should be run as straight, smooth and taut as
possible minimizing the number of 90 degree bends (two tight 90° bends can reduce airflow by 25%). If a transition
box is used, the total area of supply air ducts going out of the box should at least equal the area of the supply duct
feeding the box. To calculate the square inch area of a round duct, multiply the radius by itself (r2) and multiply that
number by 3.1416(π). The following is a summary of proper ducting connections:
1）Pull back the fiberglass insulation exposing the inner Mylar duct hose.
2）Slide the Mylar duct hose around the mount ring until it bottoms out.
3）Screw 3 or 4 stainless steel sheet metal screws through the duct hose into the transition ring. Make sure to
catch the wire in the duct hose with the heads of the screws. Use finish washers with the screws if necessary.
Do not use band clamps, as the hose will slide off.
4）Wrap duct tape around the ducting and ring joint to prevent any air leaks.
5）Pull the insulation back up over the Mylar to the ring and tape this joint.
6）Remove excess ducting and use the same connection method at the supply air grille.

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All ducting should:
◆Be appropriately sized for each application.
◆Run as smoothly and taut as possible.
◆Have as few bends or loops as possible.
◆Be securely fastened to prevent sagging or chafing during vessel operation.
◆Have all excess ducting lengths trimmed off.
◆Not be flattened or kinked.
◆Insulated when located in high heat load areas (hull side, mechanical compartments, etc.).
◆Be properly protected against potential damage when routed through open areas or bulkheads.
4.10 Seawater Pump and Plumbing
Several guidelines should be followed during the installation of the seawater system. Since the circulation pump is
centrifugal and not self-priming, it must be mounted so that it is always at least 1’ (305mm) below the water line
regardless of which tack the vessel is on. Pump must always be mounted per manufacturers recommendations,
however, the discharge must always be above the inlet. Pump head should be rotated toward the direction of water
flow. Install the seawater speed scoop intake as far below the water line and as close to the keel as possible
in any application, but especially on a sailboat, to keep the intake in the water when the boat heels over so
that air does not get into the system. The speed scoop intake must face forward and not be shared with any other
pump. A seawater strainer is mandatory between the shut off valve (seacock) and the pump to protect the pump from
any foreign matter. Failure to install a seawater strainer will void the pump warranty. The seawater system should be
installed with an upward incline from the speed scoop & seacock, through the strainer, to the inlet of the pump, next
to the inlet of the A/C unit's condenser coil. The discharge from the A/C unit should run to the seawater outlet
thru-hull fitting that should be located where it can be visually inspected for water flow as close to the waterline to
reduce noise. All hose connections shall be secured using double/reversed stainless steel hose clamps. Use Teflon tape
on all threaded connections.
Summary of the seawater system installation:
1）Install the speed scoop thru-hull inlet as close to the keel and as far below the water line as possible, facing
forward. Bed the scoop with a marine sealant designed for underwater use.
2）Install a bronze, full flow seacock on the speed scoop thru-hull inlet.
3）Install a seawater strainer below the level of the pump with access to filter.
4）Mount the pump above the strainer and at least 1’ (305mm) below the waterline.
5）Connect the seacock and strainer with an uphill run of reinforced marine grade hose.
6）Connect the discharge from the pump uphill to the bottom inlet of the A/C unit's condenser coil with
reinforced marine grade hose. Connect the discharge from the condenser coil to the overboard discharge
thru-hull fitting with 3/4" hose.
7）Avoid loops, high spots or the use of 90° elbows with seawater hose (each 90° elbow is equivalent to 2.5'
(762mm) of hose and a 90° elbow on the pump outlet is equivalent to 20' (6.1m) of hose).
8）Double clamp all hose connections with stainless steel clamps, reversing the clamps.
9）Use Teflon tape on all threaded connections.
10）Connect all metallic parts in contact with seawater to the vessel's bonding system including the speed scoop
inlet, strainer, pump and the air conditioner. Failure to do so will void warranty.
Seawater Flow:
Model 6K 10K 12K 16K 20K 25K
Min. Seawater Flow
1.1gal/min
(4.0L/min)
1.6gal/min
(6.0L/min)
2.8gal/min
(10.5L/min)
2.9gal/min
(11.0L/min)
5.3gal/min
(20 L/min)
6.3gal/min
(24.0L/min)
Max. Seawater Flow
2.6gal/min
(10.0L/min)
4.0gal/min
(15.0L/min)
5.3gal/min
(20.0L/min)
6.6gal/min
(25.0L/min)
8.5gal/min
(32 L/min)
9.8gal/min
(37.0L/min)
Rated Seawater Flow
1.6gal/min
(6.0L/min)
2.4gal/min
(9.0L/min)
3.7gal/min
(14.0L/min)
4.2gal/min
(16.0L/min)
6.1gal/min
(23 L/min)
7.4gal/min
(28.0L/min)

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4.11 Electrical Connections, Grounding and Bonding
All A/C units have a terminal strip mounted inside the electric box. The terminal strip is labeled for proper connections
of the electrical supply, ground wires and pump circuits. A wiring diagram is provided in the electrical box and later in
this manual. The wiring diagram in the electrical box supersedes any found in this manual and ABYC standards. The
correct size circuit breaker should be used to protect the system as specified on the A/C unit's data plate label. A
minimum of 12 AWG boat cable should be used to supply power to the A/C unit and the seawater pump. All
connections shall be made with ring or fork terminals. Turn off A/C power supply circuit breaker before opening
electric box.
Each A/C installed requires its own dedicated circuit breaker. If there is only one A/C installed, the seawater pump does
not require a circuit breaker; the wiring from the seawater pump is connected to the terminal strip in the electric box. If
two or more A/C use the same seawater pump, the pump wires will be connected to a pump relay, Please refer to the
wiring diagram. Electrical connections in the bilge and/or below the waterline should use heat shrink type butt splices.
Field wiring must comply with ABYC electrical codes. Power to the unit must be within the operating voltage range
indicated on the data plate. Properly sized fuses or HACR circuit breakers must be installed for circuit protection. See
table below for suggested circuit breaker size. All units must be effectively grounded to minimize the hazard of
electrical shock and personal injury. The following can be observed: AC (alternating current) grounding (green wire)
must be provided with the AC power conductors and connected to the ground terminal (marked "GRND") at the AC
power input terminal block of the unit(s), per ABYC standard E-8, or equivalent.
Fuse Information
BTU Capacity 6000 10000 12000 16000 25000
Voltage (V) 115 230 230 115 230 230 115 230 230 115 230 230 230 230
Frequency (Hz) 60 50 60 60 50 60 60 50 60 60 50 60 50 60
Starting Current (A) 22 14 14 35 17.5 16.2 45 23.5 23.7 57 28.2 28.4 40 42
Starting Time (ms) 142 120 175 122 120 138 175 125 165 240 160 180 238 264
Running Current (A) 4.8 3.4 2.5 8.1 5.0 4.5 9.3 5.3 5.2 12.7 5 5.4 6.6 8.6
*Suggest Breaker (A)
15 10 10 15 10 10 20 15 15 **25 15 15 20 20
*Slow or Medium Delay **Slow Delay

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1）Connections between the vessel's A/C system grounding conductor (green wire) and the vessel’s DC (Direct
Current) negative or bonding system should be made as part of the vessel's wiring, per ABYC standard E-9, or
equivalent.
2）When servicing or replacing existing equipment that contains a chassis-mounted ground stud, the installer
must check the vessel's wiring for the existence of the connection required in item 1 above.
The A/C unit must be connected to the ship’s bonding system to prevent corrosion due to stray electrical
current or voltage. All pumps, metallic valves and fittings in the seawater circuit that are isolated from the
A/C unit by PVC or rubber hoses must be individually bonded to the vessels bonding system also. This will
help eliminate any possibility of corrosion due to stray current or voltage.
3）Phase Notice
It is extremely important to ensure that wiring and phase sequencing of a three-phase power source is correct.
Marine wiring standards call for power source phases L1, L2, and L3 to be color-coded BLACK, WHITE, and RED,
respectively. These must be connected to the unit with the proper sequence; otherwise, it will not operate properly.
If the wiring sequence is incorrect, the unit's compressor (Scroll type only) and pump (if applicable) will run in the
reverse direction at a significantly increased noise level.
4）Users should avoid putting objects which not reaching v-1 flame retarded rating within an area of 50mm radius
from the waterproof connector.
4.12 Manual Controller Installation
DO NOT turn the unit off and immediately turn it back on. Wait at least 30 seconds for refrigerant
pressures to stabilize.
Before mounting the manual controller, consider the location. The manual controller should be mounted on an inside
wall, slightly higher than mid-height of the cabin. The cut out size for the manual controller is 2 1/2” (64mm) wide by 3
5/16” (84mm). Do not mount the manual controller in direct sunlight, near any heat producing appliances or in a
bulkhead where temperatures radiating from behind the panel may affect performance. Do not mount the manual
controller in the supply air stream. Do not mount the manual controller above or below a supply or return air grille. Do
not mount the manual controller behind a door, in a corner, under a stairwell or any place where there is no freely
circulating air. Mount the manual controller within display cable length (longer cable available) of the air conditioner.
Plug the display cable into the circuit board in the electric box and into the back of the manual controller.

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4.13 Electric Box Installation
4.13.1 (6K, 10K, 12K, 16K)
Mount the electric box using four M5 screws.
Mount the electric box in a cool dry location and leave plenty of room for maintenance.
Units: mm

16
4.13.2 (20K, 25K)
Units: mm

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4.14 Installation Checklist (Review Prior To Installation)
4.14.1 Seawater cooling system:
◆Speed scoop located as far below the water line and as close to the keel as possible.
◆Shut off valve (sea cock) and speed scoop properly sealed and tightened.
◆Seawater pump is at least 1’ (305mm) below water line and securely mounted.
◆Strainer mounted below pump with access to filter.
◆Double/reversed stainless steel hose clamps on all hose connections.
◆Teflon tape on all threaded connections.
◆Hose runs uphill from speed scoop and sea cock to strainer, pump and A/C unit, and then downhill (if
possible) from A/C unit to overboard discharge.
◆Water flowing freely from overboard discharge while pump is running.
◆Pump relay panel, if used, must have its own circuit breaker sized for the pump. (20 amp max)
◆All metal fittings should be bonded.
4.14.2 Mounting
◆Not in engine room or bilge area, must be sealed away from exhaust or fumes.
◆Proper spacing allowed around unit.
◆Attached to solid level platform with hold down brackets provided.
◆Condensate drain routed aft and downhill to a sealed sump (not bilge).
◆All penetrations to bilge area sealed.
◆Blower rotated toward supply air grille.
4.14.3 Electrical
◆All butt connections on pumps are tightly crimped and covered with heat shrink.
◆AC power source installed and grounded/bonded in accordance with ABYC standards.
◆Control wires connected to terminal strip with fork or ring terminals.
◆Circuit breakers sized according to specifications on the data plate label.
◆Pump Relay Panel (if used) has a dedicated circuit breaker sized for the pump but not to exceed 20 amps
maximum.
4.14.4 Grilles and Ducting
◆Supply air grille mounted as high as possible.
◆Return air grille mounted as low and as close to the A/C unit as possible.
◆Return air grille mounted away from bilge vapors or exhaust fumes.
◆Ducting is pulled taut, straight, smooth and properly connected with no excess.
4.14.5 Quick Start Operations Checklist
◆Ensure seawater intake ball valve (sea cock) is open.
◆Turn on the A/C circuit breaker. If the seawater pump has its own circuit breaker, make sure to turn it on.
◆Turn the system on. Set the desired cabin temperature (set point).
◆Check for a steady solid stream of water from the overboard discharge.
◆Verify that there is steady airflow out of the supply air grille
◆If the unit does not appear to be operating properly, refer to troubleshooting guidelines.
DO NOT turn the unit off and immediately turn it back on. Allow at least 30 seconds for refrigerant
pressure equalization.

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4.15 Wiring Diagrams
The following electric diagram is for reference only. Please refer to diagram affixed to the unit as the latest version.
WIRING DIAGRAM: 6K-115V, 6K-230V, 10K-115V, 10K-230V
The specification of power cord is AWG12*3 (3*2.5).

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WIRING DIAGRAM: 12K-115V, 12K-230V
The specification of power cord is AWG12*3 (3*2.5).

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WIRING DIAGRAM: 16K-115V, 16K-230V
The specification of power cord is AWG12*3 (3*2.5).