Coleman 9330F4552, 8330-752, 9330C755, 8530-750, 9530A751 Installation Instructions Manual

RV Products Division

INSTALLATION INSTRUCTIONS

FOR

9330F4552 FREE DELIVERY PLENUM KITS

8330-752 CONTROL BOX KIT (12 VDC COOL ONLY)

9330C755 CONTROL BOX KIT (12 VDC HEAT READY)

8530-750 CONTROL BOX KIT (24 VAC COOL ONLY)

9530A751 CONTROL BOX KIT (12 VDC HEAT PUMP)

9430A751 ZONE CONTROL KIT (12 VDC COOL ONLY)

9430A755 ZONE CONTROL KIT (12 VDC HEAT READY)

9630A751 ZONE CONTROL KIT (12 VDC HEAT PUMP)

Coleman is a registered trademark of The Coleman Company, Inc. used under license. Mach is a registered trademark.

1976N350 (9-14) PP

Airxcel, Inc.

RV Products Division

P.O. Box 4020

Wichita, KS 67204

TABLE OF CONTENTS

1. Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. General Information and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. System Match-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5. Ceiling Plenum Installation Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6. Control Box Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

7. Control Box Kits (Zone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

8. Wall Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

9. Routing Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

10. Routing Thermostat Wiring (Zone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

11. Routing 115 VAC Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

12. Securing the Upper Unit to the Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

13. Installing the Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

14. Installing the Control Box (Zone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

15. Installing the Heater Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

16. Installing the Ceiling Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1. WARNINGS

IMPORTANT NOTICE

These instructions are for the use of qualified 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 SERVICE THIS EQUIPMENT.

WARNING

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

The use of components not tested in combination 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.

To prevent the possibility of severe personal injury or
equipment damage due to electrical shock, always be sure
the electrical power to the appliance is disconnected
during installation.

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

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 which is not essential and not
required, but which may be useful or helpful.

WARNING – SHOCK HAZARD

NOTE

2. GENERAL INFORMATION AND
REQUIREMENTS

This mount kit is designed to provide free delivery (no
ducting) air distribution. It is applicable to 47000, 48000
and 49000 Series Roof Top Units Only. The control
box mounts inside the upper unit return air opening. The
minimum recommended roof thickness with this system is
1”. The upper unit and ceiling assembly mount on a
square roof opening 14” to 15” on a side. The roof must
be capable of supporting 110 pounds of static load. Keep
in mind that dynamic loads exist in recreation vehicles.

All manual controls have been removed from the ceiling
plenum. They have been replaced with control relays.

The relays are mounted in the electrical box of the ceiling
plenum. The relays contain 12 VDC coils (which may be
energized by a wall mounted thermostat), with contacts
that control the 115 VAC used to power the roof top unit.

A low voltage controller controls all air conditioning
functions. The low voltage controller controls a 12 VDC
electrical circuit, which is used to energize the relays in
the ceiling plenum. The low voltage controller that
Airxcel, Inc. provides for the system may be a
combination (Heat/Cool).

2

These low voltage controllers are capable of operating
both the roof top air conditioner and any furnace with a
12 VDC control circuit of 1 amp or less (continuous
current).

All air conditioning equipment is subject to freeze up
when evaporator air flow is sufficiently reduced. Ducting
of any length creates potential for reduced evaporator air
flow and system freeze up. To protect both the installer
and Airxcel, Inc. from conditions that promote reduced
air flow and system freeze up, Airxcel, Inc. has equipped
the ceiling plenum compressor control circuit with a low
temperature probe. The low temperature probe monitors

3. PACKAGE CONTENTS

The mounting kit package contains the following:

1) Steel mount frame

2) Ceiling shroud assembly

3) Small parts package consisting of:

4. SYSTEM MATCH-UP

the temperature of the air conditioner evaporator coil.
When the temperature of the evaporator coil drops below
28 degrees F, the switch will open, stopping compressor
operation. Compressor operation will resume once the
evaporator warms to 55 degrees F.

IMPORTANT

The low temperature sensor is part of the ceiling
plenum electrical circuit. The probe must be inserted
into the evaporator coil of the roof top unit by the
installer when bolting the ceiling plenum to the roof
top unit.

a) Mounting bolt (x4)
b) Mount screws (x3)
c) Supply duct assembly
d) Shoulder screw/spring (x4)

Ceiling Assembly Control Box Wall
Desired Function Kit Thermostat

12 VDC Control 8330-752 7330G335
Cooling Only or 8330-336

12 VDC Control 9330C755 7330G335
Cool/Heat Ready or 8330-336

24 VAC Control 8530-750 7330B344
Cooling Only or 8330B324

12 VDC Control 9530A751 8530A345
Heat Pump

Ceiling Assembly Control Box Wall
Desired Function Kit Thermostat

12 VDC Zone
Control Cooling 9430A751 9330A335
Only

12 VDC Zone
Control 9430A755 9330A335
Cool/Heat Ready

12 VDC Zone
Control Heat 9630A751 9330A335
Pump

3

5. CEILING PLENUM INSTALLATION REQUIREMENT

1. The ceiling plenum must be installed under the roof
opening.

The ceiling plenum bolts below the roof top unit.

Compression of the framed ceiling cavity between the
roof top unit and the ceiling plenum is what holds both
components in place.

2. Ceiling cavity depth (the measurement from the ceiling to
the roof – maximum 6”).

3. The 115 VAC service for the roof top unit must be routed
into the ceiling plenum. To prevent wire pinching and to
promote ease of installation, allowances must be made for
routing the 115 VAC supply wiring into the front of the
roof opening.

4. The wirebox has a 9 pin receptacle extending from the
front. This mates with the roof unit 115 volt electrical
conduit. When making this connection, verify that the
plugs are properly aligned and have snapped together
securely.

Standard Control Box

Cool Only

Boxes

Yes B BLUE Completes -12 VDC circuit for all relays Yes
Yes Y YELLOW Energizes coil on Compressor Relay Yes
Yes GH GREEN Energizes coil on High Fan Relay Yes
Yes GL GRAY Energizes coil on Low Fan Relay Yes
Yes FREEZE WHITE Evaporator Freeze Sensor Connections Yes
Yes FREEZE

No W WHITE Energizes coil on Heat Relay Yes

Plenum Terminal

Designation

Thermostat Wire

Connection

Zone Control Box

Plenum Terminal

Designation

R+ Red Provides +12 VDC to upper unit control box

Cool Shed

(2 Terminals)

Heat Shed

(2 Terminals)

Room (2 Terminals) Any The remote room temperature sensor attaches here*

Freeze (2 Terminals) White Freeze sensor attaches here

Gen Any Allows system to connect to an automatic start generator system

B- Blue Provides -12 VDC to upper unit control box
Sig 1 Purple Communication line between upper unit control box and thermostat
Sig 2 Black Communication line between upper unit control box and thermostat

* Zone 1 has option of using thermostat as room sensor

Thermostat Wire

Connection

White

Jumper Wire

White

Jumper Wire

5. The wirebox for the heat/cool units will have a two pin
receptacle which mates with the umbilical plug from the
heater assembly.

6. LOW VOLTAGE CONTROL WIRING (WALL
THERMOSTAT)

A. A low voltage terminal strip on the front of the box

connects to the low voltage control wires. The wires
attach by 1/4" quick connects.

B. The low voltage control wiring must be run from the

wall thermostat mounting location to the wirebox low
voltage terminals. To prevent wire pinching and to
promote ease of installation, allowances must be
made for routing the low voltage wiring into the front
of the opening.

Function of Low Voltage Terminal

Extending From Ceiling Plenum

Function of Low Voltage Terminal Extending From Ceiling

Plenum

Removing jumper wire will allow system to be connected to N.C.

contacts of a load shed system

Removing jumper wire will allow system to be connected to N.C.

contacts of a load shed system

Heat Ready

Boxes

4