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Spacing Allowances &
Unit Dimensions
The following space allowances should be considered
when mounting the unit:
1. Allow a minimum of 6" (152mm) around the perimeter
of the unit in the area of the seawater and condensate
drain piping.
2. Allow a minimum of 3" (76mm) of air space in front of
the evaporator coil for the return air intake if it is
adjacent to a bulkhead.
3. Allow a minimum of 3" (76mm) of air space for the
electric blower motor ventilation. For Cuddy dc sys-
tems, allow at least 1" (25mm) above DPM for ad-
equate ventilation.
4. For flexible ducting connection, allow 2" (51mm) for
the duct ring, 1" (25mm) for the duct bend radius and
add diameter of the ducting to get the total clearance
distance (2" [51mm] + 1" [25mm] + duct diameter) as
measured from the blower outlet (this also applies to
clearance needed behind the supply air grille). Note
that the blower and duct ring can be positioned either
vertically or horizontally. See Figure 1 at the back of
this manual.
These space allowances are suggested minimums.
Enough space should be allocated for installation and
serviceability. See Figure 1 at the back of this manual for
space allowances and unit dimensions.
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 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. The
seawater pump circulates cool seawater through the
inner tube in the condenser coil, this cools the refriger-
ant in the outer tube and condenses it from a gas into a
liquid. The heat from the refrigerant is exchanged to the
seawater and discharged overboard. The liquid refriger-
ant is then passed through the EVAPORATOR COIL and
the cycle repeats. Removing heat from the cabin air
lowers its temperature. The cooled air is blown through
the ducting and out the supply air grille(s). See Figure 2
at the back of this manual for component identification.
L-2200 Installation
Mounting Brackets
The air conditioning unit is supplied with a base pan that
also serves as a condensate pan. Mounting clip brackets
and screws (4) are provided to secure the base pan onto
a flat, horizontal surface. See Figure 3 at the back of this
manual.
Condensate Drains
The condensate drain pan is 1¾" (45mm) high with two
drain locations. During conditions of high humidity,
condensate may be produced at a rate of approximately
½ gallon (1.9 liter) per hour. With this in mind, 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 a quart of
water into the pan and checking for good flow.
For installation of the condensate drain (refer to Figure 4
at the back of this manual):
1. Remove the aft facing watertight plug from the base
pan of the air conditioning 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" (16mm) I.D. reinforced hose to the hose
barb and secure with stainless steel hose clamps.
6. Install the condensate drain hose downhill from the
unit and aft to a sump - hose should have a trap.
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 three (3) 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. Failure to comply may allow bilge or
engine room vapors to mix with the air conditioners return air
and contaminate living areas which may result in injury or
death.
Consideration should be given to installing a trap in the
condensate drain line(s) so that normal discharge of
condensate can fill the trap and prevent the ingress of
carbon monoxide (CO) or other potentially harmful
vapors.
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