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SMB Air Conditioner 

 

12 VDC Owner’s Manual 9/09 

 

Page 2 of 13 

Chapter 1 – Safety Considerations 

 
Congratulations on your purchase of a marine air conditioner by Marvair

®

. Your air conditioner has 

been designed to provide years of safe, dependable operation. These instructions contain a general 
description on the operation of the unit, how set up thermostat, a list of routine maintenance items, basic 
trouble shooting information, and the warranty.  
The first thing we recommend for you to do is to write down the serial number of the unit. The number 
can be found on the data label on the unit. Refer to them whenever you call upon your Marvair Marine 
dealer regarding this unit. 

Model No. 

SMB05ACP

 Serial 

Number___________________ 

Safety Considerations 

This is the safety alert symbol

. When you see this symbol on the Marvair Marine unit and in the 

instruction manuals be alert to the potential for personal injury. Understand the signal word DANGER, 

WARNING and CAUTION. These words are used to identify levels of the seriousness of the hazard.

 

 

DANGER

 

Failure to comply will result in death or severe personal injury and/or property damage. 

 

WARNING

 Failure to comply could result in death or severe personal injury and/or property 

damage. 

 

CAUTION

  Failure to comply could result in minor personal injury and/or property damage. 

IMPORTANT is used to point out helpful suggestions that will result in improved installation, reliability 

or operation. 

 

DANGER 

Self-contained units or evaporators of split systems should never be installed in engine rooms or other 
areas where fuel, battery or bilge vapors may be introduced to the living quarters on board.  

These components do not meet federal requirements for ignition protection. Do not install in spaces 
containing gasoline engines, tanks, LPG/CPG cylinders, valves, fuel line fittings, or regulators. Failure 
to comply may result in injury or death. 

Do not terminate condensate drain line within four feet of any outlet of engine or generator exhaust 
systems, nor in a compartment housing an engine or generator. 

Installation and servicing of this system can be hazardous due to system pressure and electrical 
components. When working on this equipment, always observe precautions described in the literature, 
tags and labels attached to the unit(s). Follow all safety codes. 

Marvair recommends that you use only factory certified, EPA licensed refrigerant technicians and 
qualified marine electricians. ABYC certification in both HVAC and Marine electrical trades is 
desirable. In receiving these certifications, a technician and his employer has made a statement of 
commitment to professional, technically proficient and reliable service. 

 CAUTION 

Certain components will run at fairly high temperatures. Exercise care in working around operating 
equipment. Do not touch operating machinery without the aid of qualified personnel, as referred to 
above. 

Summary of Contents for Marvair Marine SMB05ACP

Page 1: ...Chapter 7 Wiring Diagram 10 Chapter 8 Spare Parts List 11 Chapter 8 Warranty 12 Manufactured By Marvair Division of AIRXCEL Inc P O Box 400 Cordele Georgia 31010 156 Seedling Drive Cordele Georgia 310...

Page 2: ...point out helpful suggestions that will result in improved installation reliability or operation DANGER Self contained units or evaporators of split systems should never be installed in engine rooms...

Page 3: ...URE FAULT shutdown Supply Air Grille s Some installations will have more than one supply air grille Standard main supply air grilles are generally made of aluminum or wood frames with two or four way...

Page 4: ...me cases In such severe conditions seek the advice of your local factory service representative They will be most familiar with solutions to localized situations Marvair works closely with our servici...

Page 5: ...air conditioner Electrical The SMB model is designed to operate of a nominal 12 volt DC power supply an inverter is not required The unit will operate on a DC voltage from 9 volts to 17 volts General...

Page 6: ...dedicated breaker turn it on Verify that water is being discharged overboard Instructions for the Thermostat Cooling Cycle 1 Adjust the cooling temperature set point on the thermostat higher than the...

Page 7: ...ct water line at ball valve 3 Insert line into a bucket of potable anti freeze 4 Run air conditioner until a solid stream of anti freeze is being discharged overboard 5 Reconnect water line at ball va...

Page 8: ...ndoor coil The sensor and or thermostat should be replaced if defective 3 Check for water flow Check refrigerant charge Check switches for loose wire connection broken or burned contacts 4 Tug on wire...

Page 9: ...tional unit s if necessary 7 Add refrigerant Noise operation 1 Copper tubing is vibrating 2 Indoor blower assembly 3 Loose cabinet or components 4 Improper unit installation 1 Adjust by bending slight...

Page 10: ...SMB Air Conditioner 12 VDC Owner s Manual 9 09 Page 10 of 13 Chapter 7 Wiring Diagram...

Page 11: ...pressor 10343 Control Module 01627 Evaporator Coil 60127 Blower Assembly 30067 Control Board 50196 Condenser water coil 60194 High Pressure Switch Manual Reset 400 psig 70339 Cap Tube Strainer Assembl...

Page 12: ...heir designated Service Representative The responsibility of the Owner of the Equipment includes the following 1 To operate the equipment according to the manufacturer s instructions 2 To provide easy...

Page 13: ...HIS WARRANTY AND SERVICE POLICY CONSTITUTE THE EXCLUSIVE REMEDY OF ANY PURCHASER OF A MARVAIR REVERSE CYCLE AIR CONDITIONER AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING WITHOU...

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