Installation manual
SeaMach 24 VDC
Rooftop Air Conditioners
SeaMach 24 VDC Rooftop Air Conditioner Installation Manual 5/2013  Page 2 of 20
Chapter 1 - Safety Considerations
These instructions are a general guide for installing the SeaMach 24 VDC roof top air conditioners. For 
specic air conditioner details, it will be necessary to refer to the printed Customer Envelope Package 
supplied with each air conditioner.
IMPORTANT NOTICE:
These instructions are for the use of qualied individuals specially trained and experienced in 
installation of this type equipment and related system components.
Installation and service personnel are required by some states to be licensed. PERSONS NOT 
QUALIFIED SHALL NOT INSTALL NOR SERVICE THIS EQUIPMENT.
NOTE:
The words “Shall” or “Must” indicate a requirement which is essential to satisfactory and safe product 
performance.
The words “Should” or “May” indicate a recommendation or advice which is not essential and not 
required but which may be useful or helpful.
Safety Considerations
This is the safety alert symbol  . When you see this symbol on the Marvair
®
 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.
!
WARNING - SHOCK HAZARD
To prevent the possibility of severe personal injury or equipment damage due to electrical shock, 
always be sure the electrical power source to the appliance is disconnected.
CAREFULLY FOLLOW ALL INSTRUCTIONS AND WARNINGS IN THIS BOOKLET TO AVOID 
DAMAGE TO THE EQUIPMENT, PERSONAL INJURY OR FIRE.
!
WARNING
Improper installation may damage equipment, can create a hazard and may void the warranty.
The use of components not tested in accordance with these units will void the warranty, may make the 
equipment in violation of state codes, may create a hazard and may ruin the equipment.










