Dometic Blizzard NXT H540315 User Manual

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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 ....................................................................................................................................................4
C. Table - Air Distribution Duct Sizing & Design .............................................................................................................4
INSTALLATION INSTRUCTIONS ..........................................................................................................................................5
A. Choosing Proper Location For Unit ...........................................................................................................................5
B. Roof Preparation .......................................................................................................................................................5
C. Air Distribution Duct Sizing & Design ........................................................................................................................6
D. Wiring Requirements .................................................................................................................................................7
E. Choosing Thermostat Location ..................................................................................................................................8
F. Thermostat, Optional Indoor Temperature Sensor & Thermostat Communication Cable Installation ......................8
G. Placing Unit On Roof .................................................................................................................................................9
H. Installing Unit ...........................................................................................................................................................10
I. LCD SZ System Low Voltage Wire Connections .....................................................................................................12
J. CCC 2 System Low Voltage Wire Connections ....................................................................................................... 12
K. 120 Vac Power Supply Connection .........................................................................................................................13
L. SystemConguration ..............................................................................................................................................13
M. Installing Return Air Cover .......................................................................................................................................14
N. (CCC 2 System Only) Reset & Checkout ................................................................................................................14
O. (CCC 2 System Only) Furnace /Aqua Temperature Differential Setting .................................................................. 14
GENERAL INFORMATION ...................................................................................................................................................15
A. Heat Gain ................................................................................................................................................................15
B. Condensation ..........................................................................................................................................................15
WIRING DIAGRAMS ............................................................................................................................................................16
A. Simple RV Wiring Diagram ...................................................................................................................................... 16
B. Unit Wiring Diagrams ...............................................................................................................................................17
C. Electronic Control Kit Wiring Diagrams ...................................................................................................................17
INTRODUCTION
This air conditioner (hereinafter referred to as “unit” or “product”) is designed and intended for installation on the roof of a
Recreational Vehicle (hereinafter referred to as RV) during the time it is manufactured.
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.
DOCUMENT SYMBOLS
Indicates additional information that is NOT related
to physical injury.
Indicates step-by-step instructions.

Dometic Blizzard NXT H540315 Specifications

General

Brand	Dometic
Model	Blizzard NXT H540315
Category	Air Conditioner
Language	English