Dometic DCU User manual

CLIMATE CONTROL
MARINE SELF-CONTAINED
DCU, DLU, DTG, ECD, TX
EN Self-Contained Air Conditioning System
Installation manual.........................................................3
DE Autonome Klimaanlage
Montageanleitung.......................................................20
IT Sistema di climatizzazione autonomo
Indicazioni di montaggio............................................. 37
FR Système de climatisation autonome
Instructions de montage.............................................. 54
ES Sistema de aire acondicionado autónomo
Instrucciones de montaje..............................................71
Form No. 4445103976 Dometic Corporation

Copyright
© 2022 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law. The
underlying technical design and the products contained herein may be protected by design, patent or be patent pending. The
trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

EN
English
1Important notes................................................................................................................................................. 3
2Related documents............................................................................................................................................ 3
3Explanation of symbols and safety instructions.......................................................................................................3
4Intended use..................................................................................................................................................... 5
5General information........................................................................................................................................... 5
6Specifications.................................................................................................................................................... 6
7Pre-installation................................................................................................................................................... 6
8Installation....................................................................................................................................................... 10
9Disposal.......................................................................................................................................................... 18
10 Warranty..........................................................................................................................................................18
1 Important notes
Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual in order to ensure that you install, use, and maintain the product properly at all times. These instructions
MUST stay with this product.
By using the product, you hereby confirm that you have read all instructions, guidelines, and warnings carefully and that you understand and agree to abide by the terms and conditions as set forth herein. You agree to use this product
only for the intended purpose and application and in accordance with the instructions, guidelines, and warnings as set forth in this product manual as well as in accordance with all applicable laws and regulations. A failure to read and
follow the instructions and warnings set forth herein may result in an injury to yourself and others, damage to your product or damage to other property in the vicinity. This product manual, including the instructions, guidelines, and
warnings, and related documentation, may be subject to changes and updates. For up-to-date product information, please visit documents.dometic.com.
2 Related documents
Find the installation manual in additional languages online at documents.dometic.com
3 Explanation of symbols and safety instructions
This manual has safety information and instructions to help you eliminate or reduce the risk of accidents and injuries.
3.1 Recognize safety information
A signal word will identify safety messages and property damage messages, and also will indicate the degree or level of hazard
seriousness.
WARNING! This is a safety alert symbol.
It is used to alert you to potential physical injury hazards. Obey all safety messages that follow this symbol to avoid possi-
ble injury or death.
3.2 Understand signal words
A signal word will identify safety messages and property damage messages, and also will indicate the degree or level of hazard
seriousness.
WARNING!
Indicates a hazardous situation that, if not avoided, will result in death or serious injury.
NOTICE!
Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
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EN 
Note Supplementary information for operating the product.
3.3 Supplemental directives
To reduce the risk of accidents and injuries, please observe the following directives before proceeding to install this appliance:
• Read and follow all safety information and instructions.
• Read and understand these instructions before installing this product.
• The installation must comply with all applicable local or national codes, including the latest edition of the following standards:
• American Boat and Yacht Council (ABYC)
• ANSI/NFPA 70, National Electrical Code (NEC)
3.4 General safety messages
WARNING! CARBON MONOXIDE HAZARD
Failure to obey the following warnings could result in death or serious injury:
• Do not install or operate a self-contained air conditioner in the bilge or engine room areas, or near an internal com-
bustion engine. Ensure that the selected location is sealed from direct access to bilge and/or engine room vapors.
• Verify the condensate drain line is properly installed and sealed. Do not terminate the condensate drain line within 3
. (0.91 m) of any outlet of an engine or generator exhaust system, in a compartment containing an engine or gener-
ator, or in a bilge, unless the drain is connected properly to a sealed condensate or shower sump pump. If the drain
line is not properly installed, dangerous fumes may travel up the drain line and contaminate the living quarters.
• Do not install the air conditioning unit in a location where it can circulate carbon monoxide, fuel vapors, or other
noxious fumes into the boat’s living spaces.
WARNING! ELECTRICAL SHOCK, FIRE, AND/OR EXPLOSION HAZARD.
Failure to follow these precautions could result in death or serious injury.
This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabil-
ities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use
of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play
with the appliance. Cleaning and user maintenance shall not be made by children without supervision. This appliance
should not be accessible to the general public.
WARNING! EXPLOSION HAZARD.
Failure to follow these precautions could result in death or serious injury.
Do not install the air conditioning unit in a location containing gasoline engines, tanks, LPG/CPG cylinders, regulators,
valves, or fuel line fittings. Unless labeled otherwise, self-contained units do not meet federal requirements for ignition
protection. Failure to obey this warning could result in death or serious injury.
WARNING! ELECTRICAL SHOCK HAZARD.
Failure to follow these precautions could result in death or serious injury.
• Be sure to effectively ground the air conditioning unit to minimize the electrical shock hazard. Refer to the installation
guidelines for further information.
• Each air conditioning unit installed requires a dedicated circuit breaker. If there is only one air conditioning unit in-
stalled, the seawater pump does not require a circuit breaker. If two or more air conditioning units use the same sea-
water pump, the pump wires will be connected to a pump relay panel (PRP), which in turn has its own dedicated cir-
cuit breaker sized for the pump (20 A max). Refer to the wiring diagram furnished with the PRP. Electrical connections
in the bilge and/or below the waterline should use heat shrink type butt splices.
• Field wiring must comply with ABYC electrical codes. Power to the unit must be within the operating voltage range
indicated on the data plate. Properly sized fuses or HACR circuit breakers must be installed for branch circuit protec-
tion. See the data plate for the maximum fuse/circuit breaker size (MFS) and minimum circuit capacity (MCA).
NOTICE!
This appliance contains fluorinated greenhouse gases in hermetically sealed equipment. Refer to the condensing unit’s
product data plate label for the quantity of refrigerant shown in weight and GWP. The refrigerant added should be not-
ed on the unit label.
4

EN
4 Intended use
This manual is intended for the installation of Turbo, Voyager, Vector Compact, EnviroCool, and Low Profile self-contained air
conditioning systems (hereinafter referred to as air conditioner). This air conditioner is only suitable for the intended purpose and
application in accordance with these instructions.
This manual provides information that is necessary for proper installation of the air conditioner. Poor installation and/or improper
operating or maintenance will result in unsatisfactory performance and a possible failure. The manufacturer accepts no liability for
any injury or damage to the product resulting from:
• Incorrect assembly or connection, including excess voltage
• Incorrect maintenance or use of spare parts other than original spare parts provided by the manufacturer
• Alterations to the product without express permission from the manufacturer
• Use for purposes other than those described in this manual
Dometic reserves the right to change product appearance and product specifications.
5 General information
Note The images used in this document are for reference purposes only. Components and component locations may
vary according to specific product models. Measurements may vary ± 0.4 in (10.00 mm).
Read these instructions completely and then plan the connections that must be made to the air conditioner (including ducting,
condensate drain line, seawater inlet and outlet hoses, electrical power connections, location of the control, and seawater pump
placement), to assure easy access for routing and future maintenance.
5.1 Component locations
Air Conditioning System Component Identification -
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1 Supply air grille and transition box 9 Seacock shut-off valve
2 Digital display 10 Seawater strainer
3 Electric box 11 Pump
5