Marine Air Systems vector compact Installation and operating instructions

vector compact
INSTALLATION, OPERATION & MAINTENANCE
/HARINE /IIR SYSTEMS®
A Member of
Taylor Made
Group.
6/99
Patented

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:
• Patented compact design with the condenser coil in the evaporator shroud.
• High efficiency rotary (7-16K) or scroll (24K) compressors
• Cupronickel condenser coil
• 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 Guard® ensures environmental protection and system integrity
The PASSPORT II microprocessor based digital controller, optional with this unit, offers the most
technologically advanced design specifically made for the unique requirements of marine air
conditioning. The controller has been designed with flexibility and the following "user 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, or optional remote sensor
• 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.
REVISION HISTORY
DOCUMENT NAME: Vector Compact.doc
ORIGINAL PRINT: March 1998
REVISED: 5/98, 7/98 & 11/98

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 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, Inc. (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 customer support team to offer optimum
solutions for your environmental control requirements. Marine Air Systems, Inc. is A Member of the
Taylor Made GroupT
'TM*
VECTOR COMPACT OVERVIEW
ROTATABLE BLOWER
BLOWER MOTOR
CONDENSER COIL OUTLET
CONDENSER COIL INLET
ROTARY COMPRESSOR
EVAPORATOR COIL SHROUD
WITH CONDENSER COIL INSIDE
ELECTRIC BOX
REVERSING VALVE
BASE/DRAIN PAN
HANDLE
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 moist cabin air across the fins on the
EVAPORATOR where the heat from the air causes the refrigerant in the evaporator coil to evaporate
from a liquid into a gas. As the refrigerant evaporates, it absorbs the heat from the cabin air. The
moisture in the air is captured on the evaporator coil and fins by forming condensation as the air is
cooled. The COMPRESSOR then compresses the refrigerant gas and pumps it through the outer tube
in the CONDENSER COIL (located in the evaporator shroud). 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 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 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 unit's efficiency. This a/c unit can effectively cool
your boat in water temperatures up to 90°F and heat it in water temperatures as low as 40°F.
n

TABLE OF CONTENTS
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
Seawater Pump and Plumbing 6
Electrical Connections, Grounding and Bonding 7
3 Phase Notice 7
Vector Compact Mechanical Control (VCM) Wiring Diagrams 8
Vector Compact Passport II Digital Control (VCP) 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
General Troubleshooting Guidelines 18-19
Passport II Digital Control Troubleshooting Guidelines 19-21
MCP Mechanical Control Panel Troubleshooting Guidelines ....21
MAINTENANCE
Seawater System, Return Air Filters, Winterization 22
Manufacturers Limited Warranty Agreement 23
Worldwide Dealer/Service Network 1998 24-25
in

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 "up" 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
VERY IMPORTANT: A/ever 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.
CAUTION! HIGH COMPRESSOR TEMPERATURE IS NORMAL DO NOT TOUCH

PLACEMENT OF SYSTEM
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.
TRANSITION BOX
PATENT PENDING DESIGN:
CONDENSER COIL INSIDE
EVAPORATOR SHROUD
FLEXIBLE DUCTING
VECTOR COMPACT
(BLOWER ROTATED TO
VERTICAL POSITION
IN FIELD)
SEA WATER OUTLET-
HANDLE BUILT INTO
CONDENSATE PAN
SEA WATER INLET
SEAWATER PUMP
SEAWATER STRAINER
SHUT-OFF VALVE
SUPPLY AIR GRILLE
PASSPORT II DISPLAY PANEL
USED WITH MODEL VCP,
MODEL VCM USES A THREE
KNOB MECHANICAL CONTROL
DISPLAY CABLE
RETURN AIR GRILLE
ELECTRIC BOX ON UNIT
MOUNTING BRACKET(S)
CONDENSATE DRAIN TO SUMP
OVERBOARD DISCHARGE
THRU-HULL FITTING
(CLAM SHELL SPEED SCOOP)
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 seawater pump placement and
plumbing, to assure easy access for installation and servicing.
TOOLS REQUIRED
• Screw drivers
• Pliers
• Pipe wrench
• Wire cutter/crimper
• Drill & 7/8" bit
• Jig saw
• Duct tape
• Electrical tape
• Teflon tape
• Bedding compound
to seal thru-hull fittings
• Hardware to secure
unit, pump, strainer,
grilles & control panel

PROPRIETARY NOTE: THE INFORMATION CONTAINED WITHIN THIS
DOCUMENT IS THE PROPERTY OF MARINE AIR SYSTEMS INC. ANY
ATTEMPT TO COPY OR DISTRIBUTE WITHOUT WRITTEN CONSENT
FROM MARINE AIR SYSTEMS INC. SHALL BE CONSIDERED
UNLAWFUL AND CAN BE CONTESTED IN A COURT OF LAW.
REV
1
J
K
L
DATE
N/A
4/16/98
1/13/99
5/10/99
REVISION
NO REVISION 'I'
REVISED DIMENSIONS ON 10 & 12 HV UNITS
CHANGED 24K M DIMENSION
ADDED 5K UNIT
DWG
DKM
DKM
DKM
DKM
APR
R P
D D
SPACE ALLOWANCES TO CONSIDER WHEN DESIGNING AREA FOR A/C UNITS
1) Allow a minimum 3.00" [7.62cm] of air space in front of evaporator
for return air intake if it is adjacent to a bulkhead.
2) Allow a minimum 1.00" [2.54cm] of air space for electric blower
motor ventilation. Not applicable with HV units.
3) For flexible ducting connection:
A) If mount ring is used, allow 2.00" [5.08cm] for the ring,
1.00" [2.54cm] for duct bend radius and add the diameter of
the ducting to get total distance as measured from blower outlet.
B) When using a transition box consider thot each box is unique
to it's application. A general rule is to add 1.00" [2.54cm]
to the largest ring diameter used to get size of box (5" min.).
Add mount ring and ducting as figured above to get approximate
space needed to install transition box. Also note that the
universal T-box is 8.00" [20.32cm] tall measured from blower
outlet.
4) Allow enough room for removal of electric box cover for servicing.
NOTE: The above dimensions are minimums. Enough space should be
allocated for installation and serviceability.
CONDENSER COIL
IN EVAPORATOR
SHROUD —\
0.63/1.6 MAX.—
DRAIN PLUG
LOCATIONS
WILL VARY —
0.38/1.0
(TYPICAL)
1 >
D
SEE
NOTE 3
/
H H*
■<
M
\
ROTATED BLOWER POSITIONS
MODEL
NUMBER
H
DIMENSIONS (inches/centimeters)
H* W D M
WEIGHT
(lbs/kg)
VCP/M5K
1 1.75/29.8 N/A
16.5/41.9
9.00/22.9
3.75/9.5
42.0/19.1
VCP/M7K
12.00/30.5
12.25/31.1
12.25/31.1 18.00/45.7
9.63/24.5
3.25/8.3 48.7/22.0
VCP/M10K
13.63/34.6
20.25/51.4
10.63/27.0
4.00/10.2 59.2/26.8
VCP/M12K
13.63/34.6
20.25/51.4"
10.63/27.0
3.75/9.5 62.8/28.5
VCP/M16K
13.63/34.6
20.25/51.4
12.00/30.5
4.00/10.2
64.7/29.3
VCP/M24K
VCP/M7K-HV
18.00/45.7
19.25/48.9
24.75/62.9
18.00/45.7
15.25/38.7
9.63/24.5
3.50/8.9
1.00/2.5**
120.0/54.4
12.00/30.5
12.25/31.1
48.7/22.0
VCP/M10K-HV
12.25/31.1
13.63/34.6
20.25/51.4"
12.00/30.5
1.00/2.5**
59.2/26.8
VCP/M12K-HV
13.63/34.6
N/A
20.25/51.4
12.00/30.5"
1.00/2.5**
62.8/28.5
VCP/M16K-HV
13.63/34.6 N/A
20.25/51.4
12.00/30.5
1.00/2.5** 64.7/29.3
♦HEIGHT TO TOP OF BLOWER OUTLET, BLOWER MAY BE ROTATED DOWN BELOW EVAP SHROUD 'H'
**MOTOR IS INSIDE FAN HOUSING ON HIGH VELOCITY (HV) UNITS, HOWEVER, ALLOW 1 "/2.5cm
FOR BLOWER RING MOUNTING FLANGE AND/OR BLOWER CAPACITOR ON THAT SIDE OF UNIT
ALL DIMENSIONS ARE NOMINAL - VERIFY ALL CRITICAL DIMENSIONS WITH MAS ENGINEERING.
9/10/97
1/8
ITATUS:
CURRENT
JRAWN BY:
DKM
APPROVED BY:
D D
ORTHOGRAPHIC PROJECTION
VCP/M5-24K (HV)
VECTOR COMPACT PASSPORT/MECHANICAL
SPACING ALLOWANCES AND DIMENSIONS
DRAWING NO:
M1020036L
/MARINE /IIR SYSTEMS®
POMPANO BEACH, FLORIDA U.S.A.

CONDENSATE DRAINS
The condensate drain pan is 2" 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.
PVC FITTING 1/2"HB x 1/2"MPT
SOLID WASHER
LIQUID-SEAL WASHER
BASE PAN
For installation of the condensate drain: *- LOCKING NUT
1. Remove the aft facing watertight plug from the base pan of the a/c unit.
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 5/8" 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 2"
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 2" base pan, which also serves as a condensate
pan. Stainless steel mounting clip brackets (4)
are provided to secure the base pan onto a flat,
horizontal surface.
BLOWER ASSEMBLY
MOUNTING
BRACKET
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 (4") 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 (tt).
MODEL
DUCT DIA
DUCT AREA
R/A GRILLE
S/A GRILLE
7K
5" dia
19.6 sq in
88 sq in
40 sq in
10K
5" dia
19.6 sq in
98 sq in
50 sq in
12K
6" dia
28.3 sq in
140 sq in
70 sq in
16K
7" dia
38.5 sq in
168 sqin
84 sq in
24K
8" dia
50.3 sq in
280 sq in
140 sqin
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. Do not use band
clamps, as the hose will slide off.
4. 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.
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.).
• Be properly protected against potential damage when routed through open areas.

SEAWATER PUMP AND PLUMBING
Seawater temperature will directly affect the a/c unit's efficiency. This a/c unit can effectively cool
your boat in water temperatures up to 90°F and heat (if reverse cycle option is installed) in water as
low as 40°F. 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 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. If possible,
the 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 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 seacock (shut off valve) must be installed directly on the speed scoop outlet. A seawater
strainer is mandatory between the seacock and pump. 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 & 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 seawater 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. Below is an installation summary:
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 at least one foot below the waterline and above the strainer.
5. Connect the seacock, strainer and pump with an uphill run of reinforced marine 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 90° elbows with seawater hose (each 90°
elbow is equivalent to 2.5' of hose and a 90° elbow on the pump is equivalent to 20' 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 vesseVs bonding system including
the speed scoop inlet, strainer, pump and the air conditioner.
CORRECT
STEADY UPWARD FLOW FROM INLET
TO UNIT THEN DOWNWARD TO OUTLET,
HOSES DOUBLE/REVERSED CLAMPED
DOUBLE HOSE CLAMPS
TO BE REVERSED
INCORRECT
HOSES MUST NOT HAVE KINKS,
LOOPS OR HIGH SPOTS WHERE
AIR CAN BE TRAPPED
INCORRECT
STRAINER MUST BE BELOW PUMP,
HOSES MUST BE DOUBLE CLAMPED
INCORRECT
PUMP & STRAINER MUST
BE BELOW WATER LINE

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 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 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 unit installed requires its own dedicated circuit breaker. If there is only one a/c unit 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 units use the same seawater 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 its 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 "GRND") 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 ground 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
3069 Solomon's Island Rd.
Edgewater, MD 21036 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 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.
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 LI, 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.

VECTOR
COMPACT
WIRING
DIAGRAMS
1 GREEN
2 BLACK
3 WHT/BLK
4 RED
5 ORANGE
6 YELLOW
7 BLK/RED
8 WHltE
SELF CONTAINED UNIT
MALE FEMALE
POLARIZED PLUG DETAIL
3/19/98
N.T.S.
WIRING DIAGRAM
VCM24K-Z 3PH
VECTOR COMPACT 3* 24K WITH
230VAC/50-60HZ/3g
MCP
M1010090A
/III
/MARINE/IR SYSTEMS®
mi))))
POMPANO BEACH, FLORIDA U.S.A.
oktaino) m ths REV DATE
AIR SYSTEMS NC ANY — *—&
>WFULL AND CAN BE CCNTESTEO M A COURT OT b
POWER SUPPLY
GND
POWER SUPPLY
•=BUH CONNECTORS
FIELD WIRING
1 CREEN
2 BUCK
3 WHT/BLK
4 REO
5 ORANCE
6 YELLOW
7 BLK/RED
/B WHITE
SELF CONTAINED UNIT
MALE FEMALE
POLARIZED PLUG DETAIL
1 GREEN
2 SLACK
3 WHT/BLK
4 RED
5 ORANGE
6 YELLOW
7 BLK/RED
8 WHITE
SELF CONTAINED UNIT
MALE FEMALE
POLARIZED PLUG DETAIL
1/19/98
N.T.S.
WIRING DIAGRAM
VCM7-16K(-Z/C/CZ)
VECTOR COMPACT with MCP
115-23OVAC/5O-6OHZ/10
M1010086
/HARINE yiiR SYSTEMS®
1/30/98
N.T.S.
POMPANO BEACH, FLORIDA U.S.A.
WIRING DIAGRAM
VCM24K(-Z/C/CZ)
VECTOR COMPACT with MCP
115-230VAC/50-60HZ/1*
M1010087
yVlARINE/IR SYSTEMS®
POMPANO BEACH. FLORIDA U.S.A.

/B/9B
AUUfcU
VIP
IU
I
PROPRIETARY
NOTE:
THE
INFORMATION
CONTAINED
W
THS
ATTEMPT
TO
COPT
OR
TO
COMPRESSOR
38OVAC/5OHZ/30
L1
L2 L3
LJ
REFERENCE
DWC(S)
M1010055
NOTE:
ALJL
WIRES
ARE
7i2
GAUGE
UNL£SS
OTHERWISE
SPECIFIED
POWER
SUPPLY
220VAC/50HZ/1*
L2
L1
'NOTE:
JUMPER
#1
(JMP1)
MUST
BE
PUM.P
-
rRnuwn
CUT
WHEN
USING
LOW
PRESSURE
^GROUND
SOLENOID
COIL
ON
REVERSE
CYCLE
UNITS
ONLY
(CZ)
SELF
CONTAINED
UNIT
-ML
11/26/9
ADDED
VCP
TO
TITLE
BLOC
REFERENCE
DWC(S)
Ml010042
&
M406C009
FOR
TERMINAL
BLOCK
LABEL
ELECTRICAL
BOX
!
L
PASSPORT
DISPLAY
PANEL
•
OPT.
ALT.
AIR
SENSOR
OPT.
OUTSIDE
AIR
SENSOR
*NOTE:
JUMPER
#1
(JMP1)
MUST
BE
CUT
WHEN
USING
LOW
PRESSURE
SWITCH
OPTION.
2/17/97
*N.T.S.
CURRENT
WIRING
DIAGRAM
VCP/VHP24K-3803-Z(CZ)
3*
VECTOR
SERIES
w/PASSPORT
E
380/50/3
COMP
-
220/50/1
POWER
7V1AR1NE/HR
SYSTEMS®
6/5/97
"N.T.5.
Iff)
1
OF
1
WIRING
DIAGRAM
VCP/VHP24K(-Z/C/CZ)
VECTOR
W/SCROLL
COMP
&
PASSPORT
23O-22OVAC/5O-6OHZ/10
/MARINE
/IR
SYSTEMS®
POMPANO
BEACH,
FLORIDA
U.S.A.
POMPANO
BEACH,
FLORIDA
U.S.A.
REFERENCE
DWC(S)
M1O1OO52
it
M4060009
FOR
TERMINAL
BLOCK
LABEL
ELECTRICAL
BOX
ELECTRICAL
BOX
L-
PASSPORT
DISPLAY
PANEL
'
OPT.
ALT.
AIR
SENSOR
I
OPT.
OUTSIDE
AIR
SENSOR
D
OPTIONAL
HIGH
LOW
PRESSURE
PRESSURE
SWITCH
SWITCH
•NOTE:
JUMPER
#1
(JMP1)
MUST
BE
CUT
WHEN
USING
LOW
PRESSURE
SWITCH
OPTION.
WIRES
ENTER
TOP
OF
ELECTRIC BOX,
NOT
THROUGH
SIDE
AS
SHOWN.
OPTIONAL
HIGH
LOW
PRESSURE
PRESSURE
SWITCH
SWITCH
EBM
'BLOWER
REVERSING
VALVE
SOLENOID
COIL
(REVERSE
CYCLE
UNITS
ONLY)
COMPRESSOR
REVERSE
CYCLE
UNITS
ONLY
•NOTF:
JUMPER
fi
(JMP1)
MUST
BE
CUT
WHEN
USING
LOW
PRESSURE
SWITCH
OPTION.
WIRES
ENTER
TOP
OF
BOX
NOT
THROUGH
SIDE
AS SHOWN.
10/3/97
"N.T.S.
1
OF
1
RMW
I
D D
WIRING
DIAGRAM
VCP7-16K(-Z/C/CZ)
VECTOR
COMPACT
with
PASSPORT
0
115-230VAC/50-60HZ/1
g
M1010082A
/MARINE
yllRSYSTEMSp
POMPANO
BEACH,
FLORIDA
U.S.A.
11/6/97
"!N.T.S.
CURRENT
RMW
|
D D
WIRING
DIAGRAM
VCP7-16K(Z)HV
HIGH
VELOCITY
VCP
w/PSPRT
H
115-23OVAC/5O-6OHZ/10
M1010083A
/V1AR1NE
y||R
SYSTEMS®
POMPANO
BEACH.
FLORIDA
U.S.A.

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 the return air stream. Make electrical connections according to the wiring diagram
found in the electric box and/or in the operations manual.
MCP OPERATION
1) Ensure seawater intake ball valve (sea cock) is open.
2) Turn SYSTEM SWITCH control knob to OFF.
3) Turn on AC circuit breaker. If the seawater pump has
its own circuit breaker, turn that on too.
4) Turn the SYSTEM SWITCH control knob to START;
this energizes the fan and seawater pump. Turn
THERMOSTAT control knob to the coolest position
by rotating fully clockwise. If system has reverse
cycle, turn knob counter-clockwise for heat.
5) Check for a steady solid stream of seawater from the
overboard discharge.
6) Turn FAN SPEED control knob clockwise to highest
setting.
7) Verify that the fan is running and that there is steady
airflow out of the supply air grille.
8) Turn the SYSTEM SWITCH to RUN; this will start
the compressor. The indicator light on the control
will illuminate.
9) To set the thermostat, allow sufficient time for the unit
to cool/heat the area to the desired temperature.
When the area is sufficiently cooled/heated, turn the
thermostat knob slowly toward the center position
until it clicks once (the indicator light will turn off).
The thermostat is now set to maintain a constant
temperature. While heating, if the ambient
temperature is less than 50°F, set the FAN SPEED
control knob to low for five to ten minutes until the
unit begins to heat well, then increase the fan speed
for more heat output.
START
SYSTEM SWITCH
FAN SPEED
THERMOSTAT
O
/MARINE/URSVSIEMS&
2.5" CUT OUT
-3.75" PANEL-
O 5
„ b
t^ °°
The thermostat on the MCP control panel serves to cycle the compressor on and off and provide an
automatic changeover from cooling to heating (reverse cycle only) with a 3.5° differential. Rotating
the thermostat to the left after it has been set for cooling will cause the unit to heat. If you rotate the
thermostat to the right, the unit will cool. If the thermostat is left stationary after being set, the unit
will cycle from cooling to neutral, or heating to neutral depending on the requirement.
Note: Do not turn the unit off and immediately turn it back on. Wait at least 30 seconds.
10

PASSPORT II DISPLAY PANEL INSTALLATION
COOL LED
FAN LED
POWER BUTTON
HEAT LED
FAN
BUTTON
DISPLAY
WINDOW
UP & DOWN
BUTTONS
AIR SENSOR
Before mounting the Passport II digital display panel touch pad, consider the location. The air sensor
built into the display panel will provide excellent room air temperature sensing given a proper
installation. The display panel should be mounted on an inside wall, slightly higher than mid-height of
the cabin, in a location with freely circulating air where it can best sense average temperature. The cut
out size for the display panel is 3%" wide by 2%" high. Do not mount the display in direct sunlight,
near any heat producing appliances or in a bulkhead where temperatures radiating from behind the
panel may effect performance. Do not mount the display in the supply air stream. Do not mount
the display above or below a supply or return air grille. Do not mount the display behind a door, in a
corner, under a stairwell or any place where there is no freely circulating air. Mount the display within
display cable length (custom lengths available) of the air conditioner. Plug the display cable (1574.6m
standard length with 8-pin connector) into the circuit board in the electric box and into the back of the
display panel. Secure the display panel to a bulkhead with the adhesive strips provided. Clean the
mounting surface with isopropyl alcohol only prior to placement (test alcohol on hidden portion of
surface first). If the adhesive strips cannot be used directly on the bulkhead then use the plastic
bulkhead adapter. The bulkhead adapter (sold separately) is mounted to the bulkhead with screws and
the display panel is secured to the adapter with adhesive strips. Do not use a screw gun and do not
over-tighten screws when mounting adapter.
If a proper location for room temperature sensing cannot be found for the display, an optional remote
air sensor may be used. Mount the remote air sensor in the return air stream behind the return air
grille/opening and plug its cable (772.1m standard length with 6-pin connector) into socket #J2 on the
circuit board (socket nearest the corner of the board). Installing the remote air sensor will override the
face plate sensor. An optional outside air temperature (O.A.T.) sensor and cable may also be used.
Plug the O.A.T. cable into the 6-pin socket #J3. Mount the sensor outside in a protected location and
not in direct sunlight. Air sensor cables are available in various lengths. Secure all cables but do not
staple when mounting.
11

INSTALLATION CHECKLIST (review prior to installation)
Seawater cooling system:
□ Speed scoop located as far below the water line and as close to the keel as possible
□ Shut off valve and speed scoop properly sealed and tight
□ Seawater pump is at least one foot 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, 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
Mounting
D Not in engine room or bilge areas, must be sealed away from exhaust or fumes
□ Proper spacing allowed around unit
□ Attached to solid level platform with hold down clips provided
□ Condensate drain routed aft and down hill to a sealed sump (not bilge)
□ Blower rotated toward supply air grille
Electrical
□ All butt connections on pump wire tightly crimped and heat shrunk
□ 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
□ Passport II display cable is connected at both ends
□ Pump Relay Panel (if used) has a dedicated circuit breaker sized for the pump but not to exceed
20 amps maximum.
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
QUICK START OPERATIONS CHECKLIST
□ Ensure seawater intake ball valve (seacock) is open.
□ Turn on the A/C circuit breaker. If the seawater pump has its own circuit breaker, turn that 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.
Note: Do not turn the unit off and immediately turn it back on. Allow at least 30 seconds for
refrigerant pressure equalization.
12

PASSPORT II CONTROL
POWER BUTTON: Press and release to turn unit on and off.
NOTE: To "press and release" a button, press and hold for one second and then release.
FAN BUTTON: Press and hold until the letter "A" appears for automatic fan speed or the numbers
"1" (slow) through "6" (fast) appear for manual fan speed. Fan may be used while a/c is off.
UP & DOWN BUTTONS: Press and hold either button until desired temperature (set point) is
displayed. Press either button momentarily to show current set point. Range = 60°-85°F.
COOL LED: Lights when the compressor is running in cool mode or in automatic mode while
cooling.
FAN LED: Lights when fan is on in manual mode.
HEAT LED: Lights when the compressor is running in heat mode, in automatic mode while heating or
if optional electric heat is installed and operating.
DISPLAY WINDOW: Shows current cabin temperature. It can also show outside air temperature if
the optional O.A.T. sensor is installed. Also used in viewing and setting program parameters.
AIR SENSOR: Cabin temperature is detected by the face plate air sensor, located in the bottom edge
of the display. A remote air sensor can be installed if needed. Installing the remote air sensor will
override the face plate sensor.
BLANK DISPLAY FOR NIGHTTIME OPERATION: Press the FAN and DOWN buttons
simultaneously to blank the display for nighttime operation. The appropriate LEDs will remain lit
during cooling and heating. When the desired temperature has been achieved, the middle segment of
the display window will remain lit to indicate that the system is on. Press any button to return to
normal display mode.
OUTSIDE AIR TEMPERATURE: When the optional outside air sensor is installed, press the UP and
DOWN buttons simultaneously to display the outside air temperature. The outside air sensor should
not be mounted in direct sunlight.
MODES OF OPERATION
COOL ONLY MODE: When the Passport II is configured for cool only mode, only cooling systems
will be operated as required. When the temperature drops below the set point the system will not
automatically switch into the heating mode.
HEAT ONLY MODE: When the controller is programmed for heating mode, only the heating system
will be selected for operation as required. Should the temperature rise above the set point the system
will not switch to the cooling mode automatically.
AUTOMATIC MODE: When the controller is configured for the automatic mode, both heating and
cooling will be supplied as required. The heat and cool LED indicators will light according to which
mode is operating. Temperature differential in a given mode will be maintained at 2°F, however, a 4°F
difference is required to allow the control to change modes.
13

HUMIDITY MODE: While the system is on, press the POWER and the DOWN buttons
simultaneously to enter the humidity or moisture control mode. The characters "HU-1" will appear in
the temperature display. Every four hours, the fan is started and air is circulated for thirty minutes.
During this time the air temperature is sampled and entered into memory. The cooling cycle is then
started and continues until the temperature is lowered 2°F. The compressor is allowed a maximum of
one hour running time to reach the desired temperature. Four hours after the temperature is satisfied or
the compressor times out, the cycle is repeated. During the cycle, the cool LED will be lit when the
compressor is running. Humidity mode is provided to maintain a specific temperature and humidity
range when the vessel is unoccupied for extended periods of time.
AUTOMATIC FAN MODE: Press and hold the FAN button until the letter "A" appears in the display
window. Automatic fan mode allows the control to determine fan speeds based on the room
temperature. The closer the room temperature gets to the set point, the slower the fan will run while in
cool mode. This permits a balance between the most efficient temperature control and the slowest fan
speed.
See programmable parameter "U 9" to reverse the fan speeds while in heat mode. The fan LED
will not be lit during automatic fan mode.
MANUAL FAN MODE: Press and hold the FAN button during normal operation to select one of the
six manual fan speeds available. Six (6) is the highest and one (1) represents the lowest speed
available. When a manual fan speed has been selected the fan LED will be lit.
NOTE: High and low fan speeds can be further tailored to suit the user by adjusting the fan
limits. See programming modes "U 2" and "U 3".
CIRCULATION MODE (FAN ONLY): With the system off, press and hold the FAN button until the
desired fan speed is indicated by the numbers "1" (slow) through "6" (fast). To turn the fan off press
and hold the FAN button until the number "0" appears in the display window.
PROGRAMMING THE PASSPORT II
The program mode is used to adjust operating parameters to tailor the system for efficient operation
and to allow for user flexibility. Installation variables such as ducting, sensor location and system
layout effect the operation of the overall system. Custom programming allows the system to operate as
efficiently as possible in any given installation.
TO ENTER PROGRAM MODE: With the system off, press and hold the POWER button for five
seconds until the letter "U" appears in the display window. Release the button and the first parameter
setting appears followed by "U 1".
TO UNLOCK PROGRAM MODE: After entering the program mode, simultaneously press and
release the POWER and DOWN buttons.
TO SELECT PROGRAM PARAMETER: Press and hold the FAN button to scroll through the
parameters indicated by the program number. Programs are described in the following table.
TO CHANGE THE PROGRAM PARAMETER: Use the UP and DOWN buttons to select data or
set the desired limits. The range of parameter settings is listed in the following table.
TO RESET DEFAULT SETTINGS: With the system off, press and hold the POWER button for ten
seconds until the software version number (A##) appears in the display window.
14

TO LOCK NEW DEFAULT SETTINGS: Once the desired program changes have been made and
before exiting the program mode, simultaneously press and release the UP and DOWN buttons.
Locking new defaults will render the factory defaults obsolete. Make note of the new defaults in the
following chart for future reference.
TO EXIT PROGRAM MODE: Press the POWER button or press no button for sixty seconds. The
software version number is displayed for one second prior to exiting the program mode.
PROGRAMMABLE PARAMETERS:
Program
Number
U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
U11
U12
U15
Description
Operating Mode
High Fan Speed Limit
Low Fan Speed Limit
Compressor Staging Time Delay
Temperature Calibration
Compressor Fail-Safe Protection
HHH = high freon pressure
PPP = low freon pressure (option)
Fahrenheit or Celsius
Temperature Display
Not Used
Reversed Fan Speeds
During Heating
Continuous Fan Operation or
Cycle Fan with Compressor
Reverse Cycle or Electric Heat
Option
Installed
Fan Motor Type Selection
De-icing Cycle
Default
Setting
Oorl*
85
50
15 or
135*
0
3
0
-
1
1
0
Set at
Factory
0
New**
Default
Range
0 = Automatic Mode
1 = Cool Only Mode
2 = Heat Only Mode
56-85
30-55
5-135 Seconds
±10°F
0 = Fail Safe Protection OFF
1 = Continuous Restarts, No Display
2 = Continuous Restarts, With Display
3 = 3 Failures w/Display, Reset Required
0 = °F
1=°C
-
0 = Fan speed decreases as
set point is approached.
1 = Reversed Fan Speeds
0 = Cycle Fan with Compressor
1 = Continuous Fan Operation
0 = Reverse Cycle Heat
1 = Electric Heat
0 = Shaded Pole Fan Motor
1 = Split Capacitor Fan Motor
0 = Off, 1 = One Minute
2 = Two Minutes, 3 = Three Minutes
* Specific default settings for cool only a/c units (no heat option installed) should not be changed.
** Default parameter settings may be reprogrammed by user, enter new default settings in this column.
U 1 OPERATING MODE: The operating mode is used to select heating, cooling, or automatic
modes. Zero (0) selects automatic mode, one (1) selects cooling mode and two (2) selects heating
mode. Systems that do not have heating capabilities should be programmed for cooling mode (1). The
factory default is zero (0) for automatic mode for reverse cycle units or one (1) for cool only mode for
units with no heat option installed.
U 2 HIGH FAN SPEED LIMIT: The high fan speed limit can be tailored to suit various motors and
operating conditions. The range of values is 56 through 85 in arbitrary units. The factory default is 85.
15

U 3 LOW FAN SPEED LIMIT: The low fan speed limit determines the lowest output allowed for
the low fan speed. The range of values is 30 through 55 in arbitrary units. The factory default is 50.
Both the high and low fan limits may be adjusted as follows: While the system is off, start the fan
by pressing and holding the FAN button until the number "1" appears in the display. Enter the
program mode while the fan is running and select "U2" or "U3". Raising and lowering the fan limits
while the fan is running allows the programmer to experience fan speed changes as they are made.
Once the high and low fan speed limits are set, the system will automatically reprogram itself to
produce six equally spaced fan speeds between them.
U 4 COMPRESSOR STAGING TIME DELAY: The compressor staging time delay is provided for
use where more than one a/c system is being operated from the same power source. Setting the staging
delays at different intervals allows for only one compressor to start at a time to lessen the amperage
load on the power source. The minimum delay is five (5) seconds and the maximum is one hundred
thirty five (135) seconds. The factory default setting is fifteen (15) seconds for reverse cycle units or
one hundred thirty five (135) seconds for units with no heat option installed.
U 5 TEMPERATURE CALIBRATION: Use this feature to calibrate the air sensor within a range of
± 10°F. The factory default is 0°F.
U 6 COMPRESSOR FAIL-SAFE PROTECTION: This feature is provided to monitor the
refrigerant circuit. When a high head pressure condition occurs the display will flash "HHH", when
the refrigerant system is low on pressure "PPP" will flash only if the optional low pressure switch is
installed. This display indicates that the system requires maintenance. See the troubleshooting
guidelines in this manual. The factory default is three (3). The four parameter settings are:
Zero (0): Turns off all protection, no action is taken and no message displayed.
One (1): No message displayed with 90 seconds between continuous restarts.
Two (2): Message displayed with 90 seconds between continuous restarts.
Three (3): Message displayed with three 90 second restarts, manual reset is required.
U 7 FAHRENHEIT OR CELSIUS TEMPERATURE DISPLAY: The PASSPORT II can display
temperature in either degrees Fahrenheit (°F) or degrees Celsius (°C). Setting to zero (0) displays °F
and setting to one (1) displays °C. The factory default is zero (0).
U8 NOT USED
U 9 REVERSED FAN SPEEDS DURING HEATING: During normal operation in the cooling
mode with the fan speed set to "A" (automatic), the fan speed is reduced as the set point temperature is
approached. During heating, this is not always the preferred method of operation. When this
parameter is set to one (1), the fan speed will increase as the set point is approached during heating.
This will reduce head pressure by increasing airflow across the coil as the set point is approached.
Setting the parameter to zero (0) will cause the fan speed to decrease as the set point is approached
during heating, as it does in the cooling mode. The factory default is one (1).
U10 CONTINUOUS FAN OPERATION OR CYCLE FAN WITH COMPRESSOR: The fan can
be programmed to run continuously while the system is on, or can be allowed to cycle with the
compressor. When cycled with the compressor, the fan will only operate when cooling or reverse
cycle heating is called for. To cycle the fan with the compressor, select zero (0). To operate the fan
continuously, select one (1). The factory default is one (1).
16