Installation



INSTALLING THE ROOF TOP UNIT

DANGER, SHOCK HAZARD!
DISCONNECT ALL POWER TO THE BOAT
BEFORE PERFORMING ANY CUTTING TO THE
BOAT. CONTACT WITH HIGH VOLTAGE
CAN RESULT IN EQUIPMENT DAMAGE,
PERSONAL INJURY OR DEATH.

IMPORTANT!
TO PREVENT DAMAGE TO THE WIRING AND BATTERY,
DISCONNECT THE BATTERY CABLE FROM THE
POSITIVE BATTERY TERMINAL BEFORE PERFORMING
ANY CUTTING TO THE BOAT.

A reinforced and framed roof hole opening must
be provided (may use existing vent hole). Before
cutting into the boat roof, verify that the
cutting action will clear all structural members
and crossbeams. Additionally, the location of
any inner roof plumbing and electrical supplies
must be considered.

A. If a roof vent is already present in the desired
   mounting location for the air conditioner, the
   following steps must be taken:

   1. Remove all screws which secure the roof
      vent to the boat. Remove the vent and
      any additional trim materials. Carefully
      remove all caulking from around the roof
      vent opening to obtain clean exterior roof
      surface.

   2. It may be necessary to seal some of the old
      roof vent mounting screw holes which may
      fall outside of the air conditioner basepan
      gasket.

   3. Examine the roof opening.  If the opening is
      smaller than 14" x 14", the opening must be
      enlarged. If the opening exceeds 15" x 15",
      a mounting frame must be field fabricated
      to reduce the opening size (See Figure 1). 

Figure 1.

B. If a roof vent opening is not used, a new
   opening (See Figure 1) will have to be cut
   into the boat roof. A matching opening
   will also have to be cut into the interior
   boat ceiling. Be careful when cutting the
   ceiling opening. If the ceiling opening is
   carpeted, snagging could occur.  After the
   opening in the roof and interior ceiling are
   the correct size, a framed support structure
   must be provided between exterior rooftop
   and interior ceiling. The reinforced framed
   structure must provide the following guide-
   lines:

   1. Capable of supporting both the weight of
      the rooftop air conditioner and the
      interior ceiling assembly.

   2. Capable of holding or supporting the roof
      outer surface and interior ceiling apart,
      so that when the rooftop air conditioner
      and ceiling assembly are bolted together,
      no collapsing occurs.

   RV Products 8000 series requires that the
   spacing from the boat rooftop to the
   interior ceiling be no less than 1". A
   typical support frame is shown in Figure 1.

   The frame must provide an opening to allow
   passage for the power supply wiring. Route
   the supply wiring through the frame at the
   same time the support frame is being installed.

   IMPORTANT - Allow 24" of supply wiring
               through the support frame
               (working length).

   After the support frame is installed, seal
   off all gaps between the frame and both the
   roof exterior and the interior ceiling of the
   boat (cavity walls). Additionally, seal the
   gap around the electrical supply wiring.

C. This air conditioner is to be installed in
   accordance with NFPA Standard 501C.

D. The rooftop air conditioner must be mounted as
   near level from front to rear and side to side
   as is possible when the boat is parked on a
   level plane. Figures 2 and 3 show maximum
   allowable degree deviations (mounting degrees
   from total surface flat plane). 

Figure 2 and 3.

   If the roof of the boat is sloped (not level)
   such that the roof top air conditioner cannot
   be mounted within the maximum allowable degree
   deviations, an exterior leveling shim will need
   to be added to make the rooftop air conditioner
   level. A typical leveling shim is shown in
   Figure 4. 

Figure 4.

E. After the mounting hole area is properly
   prepared, remove the carton and shipping pads
   from the roof top air conditioner. Carefully
   lift the unit to the top of the boat. Do
   not use the outer plastic shroud for lifting.
   Place the roof top air conditioner over the
   prepared mounting hole. The pointed end (nose)
   of the shroud must face towards the front of
   the boat. Pull the electrical conduit down
   from the roof air conditioner through the
   mounting opening and let hang.
            

SECURING THE AIR CONDITIONER

A mounting frame is supplied with the 8000 series
ceiling assembly. Follow the steps below to secure
the air conditioner to the roof. Refer to Figure 5. 

Figure 5.

A. Locate the air conditioner mount gasket over the
   14" to 15" square opening in the roof.

B. Install the ceiling assembly mount frame using
   the four bolts found with the ceiling assembly.

C. Proper tension has been achieved for each bolt
   when any portion of each gasket indicating tab
   has been pulled down even with the roof. See
   Figure 5. The upper unit has now been properly
   installed with optimum gasket compression.
            

INSTALLING THE CEILING ASSEMBLY

NOTE:
The optional Elect-A-Heat is intended to take the
chill out of the indoor air when the air is a few
degrees too cool for comfort. The Elect-A-Heat is
an effective "chill chaser". It is not a substitute
for a furnace.

Make sure that you have properly matched the rooftop
air conditioner and interior ceiling assembly. The
following step by step instructions must be performed
in the following sequence to insure proper installation.

A. Carefully uncarton the ceiling assembly. Controls
   are factory installed in the ceiling assembly
   (except ceiling assemblies for applications with
   remote control box/thermostat).

B. Remove the shroud from the ceiling assembly plate.

C. THIS ENTIRE STEP "C" IS NOT REQUIRED ON
   "COOLING ONLY" CEILING ASSEMBLIES.
   On ceiling assemblies equipped with the Elect-
   A-Heat heater package (heat/cool ceiling
   assemblies), detach the bottom heating element
   support plate by removing the screws located
   around the outer edge. The electrical connection
   plug will need to be disconnected before the
   heat element support plate can be removed.

D. Before the ceiling assembly can be mounted to
   the mount frame, the duct collar must be fastened
   to the basepan of the air conditioner with three
   (3) screws (See Figure 5).

E. Secure the ceiling assembly plate to the mounting
   frame with the screws provided.

F. Pull fabric duct material through ceiling assembly
   discharge duct opening. Slit the 4 comers of
   fabric duct which extends below duct opening.
   (See Figure 5). 
DANGER, SHOCK HAZARD!
DO NOT USE FABRIC DUCT TAPE ON OR AROUND
FABRIC DISCHARGE AIR DUCT COLLAR.
ALUMINUM TAPE MAY BE USED IF NEEDED.

G. Place metal flange in discharge duct opening,
   trapping fabric between it and the ceiling
   assembly (See Figure 5).

H. Pull fabric tight. This will minimize material
   bunching inside the discharge duct collar.

I. Fasten the metal flange to the ceiling assembly
   with four (4) screws. To avoid air noise and
   restrictions, trim any excess fabric that may
   extend beyond edge of metal flange.
            

ELECTRICAL WIRING

ROUTING 115 VAC WIRING

Following R.V. Products high voltage wiring
specifications and all local and national
electrical codes, route the rooftop unit 115
VAC supply wiring from its power source to
the wirebox.

High Voltage Wiring Specifications:

1. U.L. requires copper conductors only with
   minimum #12AWG.

2. To prevent voltage drops greater than 10%
   during starting loads, adhere to the following
   guideline: For lengths greater than 50', use
   #10 AWG. Circuit Protection - Refer to upper
   unit nameplate. 
DANGER, SHOCK HAZARD!
MAKE SURE THAT ALL POWER SUPPLY TO THE
UNIT IS DISCONNECTED BEFORE PERFORMING
ANY WORK ON THE UNIT TO AVOID THE
POSSIBILITY OF SHOCK INJURY OR DAMAGE
TO THE EQUIPMENT.

After the interior ceiling plate is properly
secured to the roof top air conditioner, the
following electrical connections must be
performed.

A. Route the power supply wire to the back of the
   selector switch control box. Do not attach at
   this time.

B. Take the rooftop air conditioner electrical
   conduit and plug it into the back of the
   thermostat control box. Make sure that the
   "ridged" side of the plug is aligned and
   matched with the "ridged" side of thermostat
   control box connection. DO NOT USE EXCESSIVE
   FORCE and make sure the lock-in tabs are
   snapped in place. See Figure 6. 

Figure 6.

C. Remove the selector switch control box cover
   (one screw). Take the supply wire and slide it
   into the back of the selector switch control
   box through the strain relief that is provided. 
DANGER!
WHEN USING NON-METALLIC
SHEATH CABLES (ROMEX, ETC.),
STRIP SHEATH BACK TO EXPOSE
4-6 INCHES OF THE SUPPLY LEADS.
STRIP THE INDIVIDUAL WIRE LEAD
ENDS FOR WIRE CONNECTION
(ABOUT 3/4" BARE WIRE). INSERT
THE SUPPLY WIRES INTO THE
ELECTRICAL CONNECTOR CLAMP.
SHEATH MUST PROTRUDE PAST
THE CLAMP BUSHING INSIDE THE
BOX AS ILLUSTRATED. MAKE SURE
SHEATH CABLE IS CENTERED IN
CLAMP BEFORE TIGHTENING UP
ON IT. DO NOT OVERT1GHTEN!!
THIS COULD RESULT IN PINCHING
THROUGH THE PLASTIC WIRE
INSULATION AND CAUSE SHORT1NG
OR "HOT" WIRES TO GROUND
(SHOCK HAZARD). THE CLAMP IS
INTENDED FOR STRAIN RELIEF OF
THE WIRES, SLIGHT PRESSURE IS
USUALLY SUFFICIENT TO
ACCOMPLISH THIS.

IF OTHER THAN NON-METALLIC
CABLES ARE USED FOR SUPPLY
CONDUCTORS, APPROPRIATE
STRAIN RELIEF CONNECTORS OR
CLAMPS SHOULD BE USED.

IN NO CASE SHOULD CLAMPING
OR PINCHING ACTION BE APPLIED
TO THE INDIVIDUAL SUPPLY LEADS
(NEUTRAL AND "HOT" WIRES).

D. Connect the power line to the black and white
   pigtail wires found in the control box using
   two wire nuts. IMPORTANT - Connect black wire
   to black wire and white wire to white wire.
   Install the ground wire (green to bare copper)
   to the green headed screw in the selector
   switch control box. Using a U.L. approved
   electricians tape, secure the wire nuts to the
   wires in a workmanlike manner (See Figure 7). 

Figure 7.

E. Tighten the strain relief clamp to secure the
   supply wire. DO NOT OVERTIGHTEN (See Figure 8). 

Figure 8.

   Reinstall the selector switch control box cover.
   Some ceiling assemblies may be equipped with a
   plastic strain relief. 
DANGER, SHOCK HAZARD!
TO PREVENT THE POSSIBILITY OF
SHOCK INJURY, THE WHITE WIRE
MUST BE CONNECTED TO NEUTRAL
IN THE SERVICE BOX ENTRANCE
AND THE MECHANICAL GROUND
MUST BE CONNECTED TO A
GROUNDING LUG EITHER IN THE
SERVICE BOX OR THE MOTOR
GENERATOR COMPARTMENT.

COMPLETING THE INSTALLATION

To complete the installation and system checkout
requirements, the following steps must be performed.

A. Check the thermostat probe position. Make sure the
   thermostat probe is routed through the holding guide
   and is not touching any metal surface.

B. THIS ENTIRE STEP "B" IS NOT REQUIRED ON
   "COOLING ONLY" CEILING ASSEMBLIES.
   Reinstall the Elect-A-Heat assembly by first;
   connecting the heat plug from the selector switch
   control box to the heater receptacle in the Elect-A-
   Heat heater package, and secondly; secure the
   Elect-A-Heat package to the ceiling assembly with
   the screws previously removed.

C. Make sure the non-allergenic filters are properly
   positioned in the ceiling shroud.

D. Reinstall the ceiling shroud (secure with two screws
   provided by RV Products). Put the control knobs
   (found in single parts package) on the selector
   switch and thermostat controls.

E. Turn selector switch to OFF position.

F. Turn ON the power supply to the rooftop air
   conditioner.

G. System Checkout - RV Products manufactures a
   wide range of roof top air conditioners which
   incorporate different product operation features.
   To properly evaluate the performance of a newly
   installed air conditioner, it is necessary to
   review the specific unit operation characteristics
   (features) described in product operation and
   maintenance instructions (Customer Envelope
   Package). 

The SeaMach A/C Unit can be installed on just about anything, such as Houseboats, Fishing Boats, Cruisers, Sailboats, Recreation Vehicles, Popup Campers, Vans, Toll Booths, Guard Shacks, Concession Stands, Trailers and Sheds.


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