Coleman MACH 9 Installation, Operation And Maintenance Instructions

INSTALLATION, OPERATION AND

MAINTENANCE INSTRUCTIONS

FOR

230/240 VAC, 1ø, 50Hz

MACH 9 RV ROOF TOP AIR CONDITIONER /

HEAT PUMP AND REMOTE CONTROLLER

P/N: 1980-040 01-12-2016

RV Products Division

TABLE OF CONTENTS

I.

General Information 2

II.

Heat Pump Sizing 2

III.

Selecting an Installation Location 2

I V.

Installing the Roof Top Unit 2

V.

Securing the Heat Pump to the
Roof

4

VI.

Electrical Wiring 4

VII.

System Wiring Diagram 5

VIII.

Installing the 9430A451 Ceiling
Assembly

6

IX.

Operation and Maintenance 8

i.

Model & Serial Numbers 8

ii.

Operating Guidelines 8

iii.

Adjusting the Air Flow 8

iv.

Hand Held Controller 8

v.

Initial Conguration of the Hand Held

Controller

8

vi.

Selecting the Manual Mode of
Operation

8

vii.

Follow Me 10

viii.

Fahrenheit or Celsius (F/C) 10

ix.

Time and Day Set Up 10

x.

7-Day Programming 10

xi.

LED Lights & Buttons on Ceiling
Assembly

11

xii.

Routine Maintenance 11

xiii.

Warranty 11

SERVICE CONTACT:

Coast RV Pty Ltd.
PO BOX 6287 • SILVERWATER NSW 1811 Australia
Tel: [phone] • [e-mail]

2

These instructions are a general guide for installing the
MACH 9, 230/240 VAC 50Hz Coleman-Mach roof top

heat pumps. For specic heat pump details, it will be

necessary to refer to ALL printed documents supplied
with this conditioner.

IMPORTANT NOTICE

These instructions are for the use of qualied

individuals specially trained and experienced in
installation of this type equipment and related system
components.

Installation and service personnel are required
by some states to be licensed. PERSONS NOT
QUALIFIED SHALL NOT INSTALL NOR SERVICE
THIS EQUIPMENT.

NOTE: The words “Shall” or “Must” indicate a
requirement which is essential to satisfactory and safe
product performance. The words “Should” or “May”
indicate a recommendation or advice which is not
essential and not required but which may be useful or
helpful.

WARNING! – SHOCK HAZARD To prevent the
possibility of severe personal injury or equipment
damage due to electrical shock, always be sure
the electrical power source to the appliance is
disconnected.

CAREFULLY FOLLOW ALL INSTRUCTIONS AND
WARNINGS IN THIS BOOKLET TO AVOID DAMAGE
TO THE EQUIPMENT, PERSONAL INJURY OR FIRE.

WARNING! Improper installation may damage
equipment, can create a hazard and will void the
warranty.

The use of components not tested in accordance
with these units will void the warranty, may make the
equipment in violation of state codes, may create a
hazard and may ruin the equipment.

SAFETY WARNING! This appliance is not

intended for use by young children or inrm persons

unless they have been adequately supervised by
a responsible person to ensure they can use the
appliance safely.

I. GENERAL INFORMATION

OEM – Please make sure all documentation
accompanies the heat pump.

INSTALLER AND/OR DEALER – Please make sure all
documentation is presented to the product consumer.

INQUIRIES ABOUT THE A/C UNIT – Inquiries to your
Airxcel, Inc. representative or to Airxcel, Inc. pertaining
to product installation should contain both the model
and serial numbers of the roof top unit. These rooftop

heat pumps have model and serial number identication

in two locations; (1) Rating Plate sticker - may be
viewed by removing the upper unit outer plastic shroud,
(2) Model/Serial number sticker (silver color) - located
on the return air section of the basepan of the roof
top unit. Additionally, if the heat pump is installed, the
Manufacturer and Model Number may be viewed from
the rear at the center of the basepan under the plastic
shroud.

II. HEAT PUMP SIZING

The ability of a heat pump in the cooling mode to cool
a vehicle or maintain a consumer desired temperature
is dependent on the heat gain of the vehicle. The
physical size, the window area, the quality and amount
of insulation, the exposure to sunlight, the number of
people using the vehicle and the outside temperature,
may increase the heat gain such that the capacity of the
air conditioner is exceeded.
As a general rule, air supplied (discharge air) in the
cooling mode will be 15 to 20 degrees F. (8 to 12
degrees C) cooler than the air entering (return air) the
ceiling assembly bottom air grilles.
For example, if the air entering the heat pump is 80
degrees F. (27 degrees C) (return air), the supply air
(discharge air) into the vehicle will be 60 to 65 degrees
F. (15 to 19 degrees C). As long as this temperature
difference (15 to 20 degrees F, 8 to 12 degrees C) is
being maintained, the unit is operating properly.
Again, give careful consideration to the vehicle heat gain
variables. During extreme outdoor temperatures, the
heat gain of the vehicle may be reduced by:

• Parking the vehicle in a shaded area

• Keeping windows and doors closed

• Avoiding the use of heat producing appliances

• Using window shades (blinds and/or curtains)
For a more permanent solution to high heat gain
situations, additional vehicle insulation, window awnings
and/or window glass tinting should be considered.

III. SELECTING AN INSTALLATION LOCATION

Your Coleman-Mach heat pump has been designed for
use primarily in recreational vehicles.
Is the roof of the vehicle capable of supporting both the
roof top unit and ceiling assembly without additional
support structures? Inspect the interior ceiling mounting
area to avoid interference with existing structural
members such as: bunks, curtains, tracks or room
dividers. The depth of the ceiling assembly shroud is
51mm. Be sure to check clearance to doors which must
be swung open (refrigerator – closets - cabinets).
Most of the time, roof mount heat pumps are installed
at existing roof vent locations. If there is no roof vent
(existing mounting hole), the following placement
locations are recommended.
Motorhomes – a single unit or the forward of two
units should be mounted within 2.7m of the driver
compartment.
Travel Trailers or Mini-Homes – a location should be
selected that is near the door slightly forward of the
vehicle center length.
Vans – location should be in the center of the roof (side
to side – front to back).
Truck with Camper – location should be between

1.2 and 1.5m from the rear of the camper to achieve
maximum cooling effect.

IV. INSTALLING THE ROOF TOP UNIT

DANGER! SHOCK HAZARD DISCONNECT ALL

POWER TO THE VEHICLE BEFORE PERFORMING
ANY CUTTING TO THE VEHICLE. CONTACT WITH
HIGH VOLTAGE CAN RESULT IN EQUIPMENT
DAMAGE, PERSONAL INJURY OR DEATH.

3

IMPORTANT

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

Once the location for your heat pump has been
determined (See Section III), a reinforced and framed
roof hole opening must be provided (may use existing
vent hole). Before cutting into the vehicle 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 heat pump, the following
steps must be taken.

1. Remove all screws which secure the roof vent to
the vehicle. Remove the vent and any additional
trim materials. Carefully remove all caulking from
around the roof 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 heat pump basepan gasket.

3. Examine the roof opening. If the opening is
smaller than 356mm x 356mm, the opening must
be enlarged.

B. If a roof vent opening is not used, a new opening

(See Figure 1) will have to be cut into the vehicle
roof. A matching opening will also have to be cut
into the interior vehicle ceiling. 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 the exterior roof top and interior ceiling.
The reinforced framed structure must provide the
following guidelines:

1. Capable of supporting both the weight of the roof
top heat pump and the interior ceiling assembly.

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

Airxcel, Inc. recommends that the spacing from the
vehicle roof top to the interior ceiling top be no less than
25mm. A typical support frame is shown in Figure 1.
The frame must provide an opening through the frame
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.
C. The heat pump must be mounted as near level front

to rear and side to side as possible when the vehicle
is parked level. Figure 2 shows the maximum
allowable degree deviations.

IMPORTANT – Allow 600mm 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
supply wiring.
If the roof of the vehicle is sloped such that the heat
pump cannot be mounted within the maximum allowable
degree deviations, an exterior leveling shim will need to
be added to make the unit level. A typical front to back
leveling shim is shown in Figure 3.

Once the heat pump has been leveled, some additional
shimming may be required above the interior ceiling
assembly. The heat pump and the interior ceiling
assembly must have a squared installation relationship
before they are secured together.
D. After the mounting hole is properly prepared, remove

the carton and shipping pads from around the heat
pump. Carefully lift the unit to the top of the vehicle.
Do not use the outer plastic shroud for lifting. Place
the heat pump over the prepared mounting hole.
The pointed end (nose) of the shroud must face
towards the front of the vehicle. Pull down all loose
electrical connectors from the heat pump through
the mounting opening and let hang.

25 mm

MINIMUM

THICKNESS

356 to 381 mm

356 to 381 mm

HOLE FOR WIRES

TYPICAL ROOF OPENING

FIGURE 1

SIDE TO SIDE DEVIATION FRONT TO BACK DEVIATION

LEVEL TO 15° LEFT SIDE HIGH PERMISSIBLE LEVEL TO 15° NOSE HIGH PERMISSIBLE

FIGURE 2

HEIGHT VARIES

TO MAKE

UNIT LEVEL

356 mm

356 mm

FIGURE 3

V. SECURING THE HEAT PUMP TO THE ROOF

A mounting frame is supplied with the ceiling assembly.
Follow the steps below to secure the heat pump to the
roof. Refer to Figure 4.
A. Locate the heat pump mount gasket over the 356mm to

381mm square opening in the roof.

B. Install the ceiling assembly mount frame using the

four bolts, washers and springs found with the ceiling
assembly.

C. Proper tension has been achieved for each bolt when

the spring coils have just come together (See Figure

4). The upper unit has now been properly installed with
optimum gasket compression.

D. If the heat pump is equipped with an optional evaporator

condensate pump, a 13 mm I.D. hose must be provided
that runs from the 356 mm square opening, through the
vehicle ceiling and down the side wall to allow water to
drain under the vehicle. The hose must not be allowed
to kink shut while making a bend. Connect the top end

of the drain hose to the barbed tting shown in Figure 4.

VI. ELECTRICAL WIRING

ROUTING 230/240 VAC Wiring - See Figure 4

Following high voltage wiring specications and all local

and national electrical codes, route the 230/240 VAC
supply wiring from its power source through the strain
relief and connect to the power strip. Tighten screws to
8 Kg-centimeters torque. Some OEM units are equipped
with a pre-wired power umbilical with plug which will
snap-lock into the OEM supplied mating part.

High Voltage Wiring Specications

Refer to most recent Australian/NZ Standard for Wiring
Rules

INSTALLER MUST PROVIDE A TWO POLE
DISCONNECT FOR ACTIVE AND NEUTRAL.
MAXIMUM OVERCURRENT PROTECTIVE DEVICE
FOR THESE UNITS: 15 AMPS

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.

DANGER! - WHEN USING NON-METALLIC SHEATH

CABLES (ROMEX, ETC.), STRIP SHEATH BACK TO EXPOSE
100-150mm OF THE SUPPLY LEADS.

STRIP THE INDIVIDUAL WIRE LEAD ENDS FOR WIRE
CONNECTION (ABOUT 19mm BARE WIRE). INSERT THE
SUPPLY WIRES INTO THE ELECTRICAL CONNECTOR
CLAMP. SHEATH MUST PROTRUDE PAST THE CLAMP
BUSHING INSIDE THE BOX. MAKE SURE SHEATH CABLE
IS CENTERED IN CLAMP BEFORE TIGHTENING CLAMP ON
SHEATH CABLE!!
DO NOT OVER TIGHTEN!! THIS COULD RESULT IN
PINCHING THROUGH THE PLASTIC WIRE INSULATION
AND CAUSE SHORTING 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).

ROOFTOP UNIT

MOUNTING GASKET

MOUNTING SPRING

CEILING ASSEMBLY PATCH CORD
FROM UPPER UNIT CONTROL

OPTIONAL POWER PLUG

OPTIONAL CONDENSATE DRAIN ADAPTER

POWER CONNECTION STRIP

MOUNTING FRAME

ROOF STRUCTURE

POWER CONNECTION STRIP

WITHOUT OPTIONAL POWER PLUG

WASHER

MOUNTING BOLT

FIGURE 4

4