Dometic Blizzard NXT H551816A User Manual

Read these instructions carefully. These
instructions MUST stay with this product.
USA
SERVICE OFFICE
Dometic Corporation
1120 North Main Street
Elkhart, IN 46514
SERVICE CENTER &
DEALER LOCATIONS
Please Visit:
www.eDometic.com
This Unit is designed for OEM installation. All initial installations must be approved by Dometic Corporation.
RECORD THIS INFORMATION FOR FUTURE
REFERENCE:
Model Number
Serial Number
ADB Model Number
ADB Serial Number
Date Purchased
REVISION B
Form No. 3316201.000 11/17
(French 3316202.000_B)
©2017 Dometic Corporation
LaGrange, IN 46761
Roof Top Unit (Quiet Zone Ducted Application)
Description Blizzard NXT
TM
Model
Board Built In Thermostat Optional Indoor
Temperature
Sensor
Air Conditioner
CCC 2 Controls H541815A
H541816A
Board Built In 3314082.000 CCC 2-Blk
3314082.011 CCC 2-Wht
3311931.000-20′
3311931.012-40′
3311931.020-60′
LCD SZ Controls H541915A
H541916A
Board Built In 3313192.000 C/F-Wht
3313192.019 C/F-Blk
N/A
Heat Pump
CCC 2 Controls H551816A Board Built In 3314082.000 CCC 2-Blk
3314082.011 CCC 2-Wht
3311931.000-20′
3311931.012-40′
3311931.020-60′
LCD SZ Controls H551916A Board Built In 3313193.000 C/F/HP-Wht
3313193.017 C/F/HP-Blk
N/A
INSTALLATION
INSTRUCTIONS

Dometic Blizzard NXT H551816A Specifications

General

Model Number	H551816A
Type	Rooftop Air Conditioner
Cooling Capacity	15, 000 BTU/h
Hertz	60 Hz
Energy Efficiency Ratio (EER)	10.5
Refrigerant Type	R410A
Power Supply	115 VAC

Summary

IMPORTANT SAFETY INSTRUCTIONS

A. Recognize Safety Information

B. Understand Signal Words

C. Supplemental Directives

D. General Safety Messages

SPECIFICATIONS

INSTALLATION INSTRUCTIONS

A. Choosing Proper Location For Unit

Guides on selecting the best roof location considering RV size, heat gain, and personal comfort.

B. Roof Preparation

C. Air Distribution Duct Sizing & Design

D. Wiring Requirements

Details the routing and connection of 120 Vac, 12 Vdc, and communication cables for thermostat and unit power.

E. Choosing Thermostat Location

F. Thermostat, Optional Indoor Temperature Sensor & Thermostat Communication Cable Installation

Explains the installation process for CCC 2 and LCD SZ thermostats, including wiring and sensor placement.

G. Placing Unit On Roof

H. (CCC 2 System Only) Configuration

Details how to configure the electronic control unit using dip switches for various system options and zones.

I. 120 Vac Power Supply Connection

Covers the safe connection of the 120 Vac power supply to the unit, including wire stripping and strain relief.

J. LCD SZ System Low Voltage Wire Connections

Guides the connection of low voltage wires for the LCD SZ system, including power and thermostat communication.

K. CCC 2 System Low Voltage Wire Connections

Details the low voltage wiring connections for the CCC 2 system, including power, furnace, and communication cables.

L. Securing Unit To Roof

M. (LCD SZ System Only) System Checkout

N. (CCC 2 System Only) Reset & Checkout

O. (CCC 2 System Only) Furnace/Aqua Temperature Differential Setting

WIRING DIAGRAMS