Dometic 457915 Installation Instructions

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TABLE OF CONTENTS
INTRODUCTION ....................................................................................................................................................................2
DOCUMENT SYMBOLS ........................................................................................................................................................2
IMPORTANT SAFETY INSTRUCTIONS ................................................................................................................................ 3
A. Recognize Safety Information ...................................................................................................................................3
B. Understand Signal Words ..........................................................................................................................................3
C. Supplemental Directives ............................................................................................................................................ 3
D. General Safety Messages .........................................................................................................................................3
SPECIFICATIONS .................................................................................................................................................................. 4
A. Table - Unit Data ........................................................................................................................................................4
B. Roof Requirements ....................................................................................................................................................5
INSTALLATION INSTRUCTIONS ..........................................................................................................................................6
A. Choosing Proper Location For Unit ...........................................................................................................................6
B. Roof Preparation .......................................................................................................................................................7
C. Wiring Requirements .................................................................................................................................................8
D. Choosing Thermostat Location ..................................................................................................................................9
E. Thermostat, Optional Indoor Temperature Sensor & Thermostat Communication Cable Installation ......................9
F. Placing Unit On Roof ...............................................................................................................................................10
G. Installation Preparation ...........................................................................................................................................11
H. 120 Vac Power Supply Connection .........................................................................................................................11
I. 120 Vac Power Supply Connection For 541X1XA, 551X16A, 6418XXH, & 65181XH Models. ..............................12
J. Duct Divider Installation ........................................................................................................................................... 14
K. LCD SZ System Low Voltage Wire Connections .....................................................................................................14
L. CCC 2 System Low Voltage Wire Connections .......................................................................................................15
M. (CCC2SystemOnly)Conguration ........................................................................................................................16
N. Installing Unit ...........................................................................................................................................................17
O. Installing ADB ..........................................................................................................................................................18
P. (CCC 2 System Only) Reset & Checkout ................................................................................................................ 19
Q. (CCC 2 System Only) Furnace/Aqua Temperature Differential Setting ................................................................... 20
GENERAL INFORMATION ...................................................................................................................................................20
A. Heat Gain ................................................................................................................................................................20
B. Condensation ..........................................................................................................................................................20
WIRING DIAGRAMS ............................................................................................................................................................21
A. Simple RV Wiring Diagram ...................................................................................................................................... 21
B. Unit Wiring Diagrams ...............................................................................................................................................21
C. Electronic Control Kit Wiring Diagrams ...................................................................................................................23
DOCUMENT SYMBOLS
Indicates additional information that is NOT related
to physical injury.
Indicates step-by-step instructions.
INTRODUCTION
This air conditioner/heat pump (hereinafter referred to as “unit” or “product”) is designed and intended for installation on the
roof of a Recreational Vehicle (RV) during the time it is manufactured.
Read these instructions and highlight the appropriate steps for your particular procedure before starting the installation.
This unit can be installed by one person with brief help from additional personnel. Use these instructions to ensure a properly
installed, and properly functioning product.
Dometic Corporation reserves the right to modify appearances and specications without notice.

Dometic 457915 Specifications

General

Brand	Dometic
Model	457915
Category	Air Conditioner
Language	English