Specifications

8
❖
English
L-2254 Installation
The correct size circuit breaker should be used to protect
thesystemasspecied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 connec
-
tions shall be made with ring or captive fork terminals. Turn
off a/c power supply circuit breaker before opening
electric box. See Figures 9 and 10.
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 seawa
-
ter pump, the pump wires will be connected to a pump re-
lay 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 protec
-
tion. 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pow
-
er input terminal block of the unit(s), per ABYC standard
E-8, or equivalent.
2. Connections between the vessel’s AC system ground
-
ing 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 Solomons 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ttings
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 SYS
-
TEM 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signicantlyincreasednoiselevel.
Manual Control Panel (MCP)
Installation
The MCP should be located within cap tube length of the
a/cunit.The3knobMCPisconguredeithervertically
(shown)orhorizontally.Thecutoutsizeis2.5”by7.0”,see
MCP (Figure 6) 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 with the Vector Compact unit. If the re
-
turn 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 connec
-
tions according to the wiring diagram found in the electric
box and/or in this manual. See Figure 9.
Installation Checklist
(Review prior to installation)
Note: Refer to the Elite and Passport I/O manuals
for installation and operation of those digital con-
trols.
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 tight