MAS Vector Compact 10K Instruction manual

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Vector Compact
INSTALLATION, OPERATION & MAINTENANCE
TABLE OF CONTENTS
Preface
INSTALLATION
Unpacking and Inspection 1
Safety Considerations 1
Placement of System (Tools Required) 2
Spacing Allowances and Dimensions 3
Condensate Drains 4
Mounting Brackets 4
Blower Assembly 4
Supply & Return Air Grilles 5
Ducting 5
Sea Water Pump and Plumbing 6

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Electrical Connections, Grounding and Bonding 7
3 Phase Notice 7
Vector Compact Passport (VCP) Wiring Diagrams 8
Vector Compact Mechanical (VCM) Wiring Diagrams 9
Manual Control Panel (MCP) Installation 10
Passport II Display Panel Installation 11
Installation Checklist (review prior to installation) 12
OPERATION
Manual Control Panel (MCP) Operation 10
Quick Start Operations Checklist 12
Passport II Control 13
Modes of Operation 13-14
Programming the Passport II 14-15
Programmable Parameters 15-17
Programming Notes 17
Troubleshooting Guidelines 18-21
Troubleshooting Notes 21
MAINTENANCE
Sea Water System, Return Air Filters, Winterization 22
Manufacturers Limited Warranty Agreement 23
PREFACE
Congratulations on the purchase of your Marine Air Systems VECTOR COMPACT air conditioner. No matter which of the
following features was the reason for your purchase of this air conditioner, we are sure it will meet your needs and will give you
many years of efficient and trouble free use. The VECTOR COMPACT units are self-contained direct expansion air
conditioners designed for marine applications incorporating the following features:
Patent pending compact design with the condenser coil in the evaporator shroud.
High efficiency rotary (7-16K) or scroll (24K) compressors
Cupronickel condenser coil

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Raised lance fin designed evaporator coil
Polyurethane coated 2@ deep drain pan with multiple condensate drain locations
Anti-vibration base pan
Pre-charged and pre-wired systems for easy connections
Rotatable insulated blower assembly
Charge Guard7 ensures environmental protection and system integrity
The PASSPORT II microprocessor based digital controller included with this unit offers the most technologically advanced
design specifically for the unique requirements of Marine Air Systems environmental control systems. The controller has been
designed with flexibility and the following Auser friendly@ features customers require for their applications:
Non-volatile memory
Program lock – prevents accidental program tampering
Low voltage display panel
Face plate air sensor for accurate temperature control
LED cabin temperature displayed in Fahrenheit or Celsius
Multiple fan speed selections with high and low limits
User selected programs for optimum control
Optional outside air temperature sensor
Compressor pressure failsafe protection and run time hour meter
Compressor start staging delay for multiple a/c systems
Moisture mode cycle for humidity control
De-icing feature to prevent evaporator icing
Blank display for nighttime operation
This manual is intended to provide the information necessary to ensure proper installation, operation, and maintenance of the
unit. Improper installation or misunderstood operating procedures can result in unsatisfactory performance and/or premature
failure of these units, so before proceeding please read this manual completely.
The VECTOR COMPACT a/c units are covered under the existing Marine Air Systems’ warranty policy contained in this
manual. In the interest of product improvement, Marine Air Systems’ specifications and design are subject to change without
prior notice.
CLEAN AIR ACT AMENDMENTS OF 1990 [TITLE VI - SECTION 608(C-1)]
"Effective July 1, 1992, it shall be unlawful for any person, in the course of maintaining, servicing, repairing, or

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disposing of an appliance or industrial process refrigeration, to knowingly vent or otherwise knowingly release or
dispose of any Class I* or Class II** substance used as a refrigerant in such appliance (or industrial process
refrigeration) in a manner which permits such substance to enter the environment. De minimis releases associated with
good faith attempts to recapture and recycle or safely dispose of any such substances shall not be subject to the
prohibition set forth in the proceeding sentence."
*Class I substances include CFC-12 **Class II substances include HCFC-22
MARINE AIR SYSTEMS
Marine Air Systems (MAS) is a manufacturer of air conditioning and refrigeration equipment for the marine industry.
MAS is committed to innovative technology, competitively priced products and market leadership. The MAS team has
many years of experience in the design, manufacture, application and support of marine air conditioning and
refrigeration. Our practical experience and design capability allows our application engineers and sales representatives
to offer optimum solutions for your environmental control requirements. Marine Air Systems, Inc. is A Member of the
Taylor Made GroupTM.
VECTOR COMPACT OVERVIEW
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. (The moisture in the air is captured on the evaporator coil by
forming condensation as the air is cooled.) As the refrigerant evaporates 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 (located in the evaporator shroud). The sea water pump circulates cool sea water 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 sea water and discharged overboard. The liquid refrigerant is then passed through the EVAPORATOR
COIL and the cycle repeats. Removing heat and moisture from the cabin air lowers its temperature and humidity levels.
The conditioned 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 sea water in the
condenser coil to the refrigerant and then to the air blowing through the evaporator into the cabin. Sea water
temperature will directly affect the a/c unit’s efficiency. This a/c unit can effectively cool your boat in water
temperatures up to 908F and heat it in water temperatures as low as 40 8F.
INSTALLATION
UNPACKING AND INSPECTION
When the equipment is received, all items should be carefully checked against the packing list to ensure all cartons have
been received. Move units in the normal Aup@ orientation as indicated by the arrows on each carton. Examine cartons
for shipping damage, 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.
SAFETY CONSIDERATIONS

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VERY IMPORTANT: Never install your air conditioner in the bilge or engine room areas. Insure that the selected
location is sealed from direct access to bilge and/or engine room vapors. Do not terminate condensate drain line within
four (4) feet of any outlet of engine or generator exhaust systems, nor in a compartment housing an engine or
generator, nor in a bilge, unless the drain is connected properly to a sealed condensate or shower sump pump.
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 codes. 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 HYDROCHLOROFLUOROCARBON (HCFC) REFRIGERANT R22.
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 (HCFC) 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.
! WARNING
TO MINIMIZE THE HAZARD OF ELECTRICAL SHOCK AND PERSONAL INJURY, THIS COMPONENT MUST BE
EFFECTIVELY GROUNDED. REFER TO THE INSTALLATION GUIDELINES FOR FURTHER INFORMATION.
PLACEMENT OF SYSTEM

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Selecting a good location for your air conditioner is the most important part of your preparations. 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. See diagram below.
The VECTOR COMPACT unit should be installed as low as possible, BUT NEVER IN THE BILGE OR ENGINE
ROOM AREAS. INSURE 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 air flow condition. This type of installation
will prevent short or premature cycling.
The unit should be positioned on a firm; level surface and the condensate drain line should run aft and downward from the unit to
a suitable drain location sealed away from any exhaust or bilge vapors. Plan all connections which must be made prior to
starting installation, including ducting, condensate drain, cooling water in and out, electrical power connections, location of
control panel, and sea water pump placement and plumbing, to assure easy access for installation and servicing.
SPACING ALLOWANCES AND DIMENSIONS

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<

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CONDENSATE DRAINS
The condensate drain pan is 2² high with two drain locations. During conditions of high humidity, condensate may be produced
at a rate of up to two gallons per hour. With this in mind, it is important to route condensate drains downward to a sump pump.
Do not route condensate drains to the bilge. After the condensate drain installation is complete, test the installation by pouring a
quart of water into the pan and checking for good flow. See note below.
For installation of the condensate drain:
1. Remove the aft facing watertight plug from the base pan of the a/c unit.

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2. Slip the solid washer and the liquid-seal washer onto the PVC fitting in that order.
3. Connect the fitting through the exposed hole in the base pan with the locking nut.
4. Securely tighten with two (2) wrenches to provide a proper seal.
5. Attach a 5/8² I.D. reinforced hose to the hose barb and secure with double/reversed stainless steel hose clamps.
6. Install the condensate drain hose downhill from the unit and aft to a sump.
7. Two drain fittings may be used and the hoses teed together provided there is a minimum 2² drop from the bottom
of the base pan to the tee connection.
Note: Do not terminate condensate drain line within four (4) feet of any outlet of engine exhaust systems, nor in a
compartment housing an engine, unless the drain is connected properly to a sealed condensate or shower sump pump.
MOUNTING BRACKETS
The VECTOR COMPACT unit is supplied with a stainless steel base pan, which also serves as a condensate pan. Mounting
clip brackets (4) are provided to secure the base pan onto a flat, horizontal surface.

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BLOWER ASSEMBLY
With the VECTOR COMPACT you can achieve multi-directional supply air discharge from a single unit by rotating the blower
to the desired location. It is ideal for tight installations, as 130° of rotation are available with which to position the blower. Its
advanced design allows the blower to be easily removed for rotating or servicing by releasing a single stainless steel clamp and
two (2) mounting ring screws. Rotate the blower to allow the most direct flow of air to the supply air grille.
SUPPLY & RETURN AIR GRILLES
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 unit as possible to insure
direct uninterrupted airflow to the evaporator. The return air grille should have a minimum four inches (4²) or 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. The following table shows minimum grille sizes. See the MAINTENANCE section of this manual
for return air filter cleaning instructions.
DUCTING
Good air flow is critical for the performance of the entire system. 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
degree bends can reduce airflow by 25%). The following table shows minimum duct diameters and their corresponding supply
and return air grille minimum areas in square inches. If a transition box is used, the total area of supply air ducts going out of the
box should 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 (p).
MODEL 7K 10K 12K 16K 24K
DUCT DIA 5" dia 5" dia 6" dia 7" dia 8" dia
DUCT AREA 19.6 sq in 19.6 sq in 28.3 sq in 38.5 sq in 50.3 sq in
R/A GRILLE 88 sq in 98 sq in 140 sq in 168 sq in 280 sq in
S/A GRILLE 40 sq in 50 sq in 70 sq in 84 sq in 140 sq in
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.
1. 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. Do not use band clamps, as the hose will slide off.
2. Wrap the 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.

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6.Remove excess ducting and use the same connection method at the s/a grille.
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 during boat 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.).
SEA WATER PUMP AND PLUMBING
Sea water temperature will directly affect the a/c unit’s efficiency. This a/c unit can effectively cool your boat in water
temperatures up to 908F and heat (if reverse cycle option is installed) in water as low as 40 8F. Several guidelines should be
followed during the installation of the sea water system. Since the circulation pump is centrifugal and not self-priming, it must be
mounted so that it is always at least one foot below the water line regardless of which tack the vessel is on. The pump may be
mounted horizontally or vertically, however the discharge must always be above the inlet. The pump head should be rotated
toward the direction of water flow. Install the sea water speed scoop intake as far below the water line and as close to
the keel as possible in any application, but especially on a sail boat, to keep the intake in the water so that air does
not get into the system when the boat heels over. The speed scoop intake must face forward and not be shared with any
other pump. A sea cock (shut off valve) must be installed directly on the speed scoop outlet. A sea water strainer is mandatory
between the sea cock and pump. Failure to install a sea water strainer will void the pump warranty. The sea water
system should be installed with an upward incline from the speed scoop & sea cock, through the strainer, to the inlet of the
pump and then up to the inlet of the a/c unit’s condenser coil. The discharge from the a/c unit should then run to the sea water
outlet through hull fitting which should be located where it can be visually checked for water flow, and as close as practicable to
the waterline to reduce noise. Use only reinforced marine grade hose. All hose connections shall use double/reversed stainless
steel hose clamps.

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The following is a summary of the sea water 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 sea cock on the speed scoop thru-hull inlet.
3. Install a sea water strainer below the level of the pump with access to filter.
4. Mount the pump at least one foot below the waterline and above the strainer.
5. Connect the sea cock, strainer and pump with an uphill run of e" reinforced marine grade hose.
6. Connect the discharge from the pump uphill to the bottom inlet of the a/c unit’s condenser coil.
7. Avoid loops, vertical bends (high spots) or the use of 908 elbows with sea water 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 sea water to the vessel’s bonding system including
the speed scoop inlet, strainer, pump and the air conditioner.

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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 this manual. 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 sea water 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 unit installed requires its own dedicated circuit breaker. If there is only one a/c unit installed, the sea water pump does
not require a circuit breaker, the wiring from the sea water pump is connected to the terminal strip in the electric box. If two or
more a/c units use the same sea water pump, the pump wires will be connected to a pump relay panel (PRP) which in turn has
its own dedicated circuit breaker sized for the pump (20 amp max). Please see the wiring diagram furnished with the PRP
(NOTE: PRP triac must have mounting screw installed in order to dissipate heat). 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 branch circuit protection. See data plate for
maximum fuse/circuit breaker size (mfs) and minimum circuit ampacity (mca). All units must be effectively grounded to minimize
the hazard of electrical shock and personal injury. The following are to be observed:
1.AC (alternating current) grounding (green wire) must be provided with the AC power conductors and connected to the
ground terminal (marked A) at the AC power input terminal block of the unit(s), per ABYC standard E-8, or equivalent.
2.Connections between the vessel’s AC 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.
3.When servicing or replacing existing equipment that contains a chassis-mounted Aground@ stud, the service person or
installer must check the vessel’s wiring for the existence of the connection required in item 2 above.
ABYC standards are available from:American Boat and Yacht Council
Telephone: [phone]
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 sea water 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.
FAILURE TO PROPERLY GROUND AND BOND THE SYSTEM WILL VOID WARRANTY!
3 PHASE NOTICE
It is extremely important to insure 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

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increased noise level.
Vector Compact Mechanical Wiring Diagrams

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Vector Compact Passport Wiring Diagrams

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MANUAL CONTROL PANEL (MCP) INSTALLATION
The MCP should be located within cap tube length of the a/c unit. The 3 knob MCP is configured either vertically (shown) or
horizontally. The cut out size is 2.5" by 7.0", see MCP for orientation. Once the cut out is made, carefully uncoil the copper cap
tube with return air sensor (copper bulb) and route the control wires and cap tube through the hole and back to the a/c unit
using caution not to kink the cap tube. Mount the return air sensor into the clips provided on the evaporator coil. If the
return air sensor cannot be mounted on the evaporator coil, mount it behind the return air grille. The sensor must be mounted in