Mermaid Air Conditioner Theory of Operation and Trouble Shooting, Theory of Operation General

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e)Winterization is now completed. If the boat is to remain in the water, do not reopen the sea cock until you are ready to again use the air conditioning unit when freezing is no longer a threat.

WARNING

IF THE SEA COCK IS REOPENED WITH THE BOAT IN THE WATER AND FREEZING OCCURS, WATER HOSES MAY RUPTURE AND FLOODING MAY OCCUR CAUSING SIGNIFICANT DAMAGE OR SINKING OF THE BOAT

SECTION 6

(THEORY of OPERATION and TROUBLE SHOOTING)

CLEAN AIR ACT AMENDMENTS OF 1990 [TITLE VI - SECTION 608(C-1)]

"Effective July 1, 1992, it shall be unlawful for any person, in the course of maintaining, servicing, repairing, or disposing of an appliance or industrial process refrigeration, to knowingly vent or otherwise knowingly release or dispose of any Class I* or Class II** substance used as a refrigerant in such appliance (or industrial process refrigeration) in a manner which permits such substance to enter the environment. De minimis releases associated with good faith attempts to recapture and recycle or safely dispose of any such substances shall not be subject to the prohibition set forth in the proceeding sentence." *Class I substances include CFC-12

**Class II substances include HCFC-22

All Mermaid air conditioners have always been charged with HCFC-22 (R22), similar to your home air conditioner or refrigerator. CFC-12 (R12) has never been used in Mermaid air conditioners. It is unlawful for any technician who is not EPA certified as at least a Type1.

A. THEORY of OPERATION:

1. General:

Note: It is helpful to refer to the Operational Block Diagram, FIGURE 2, and the Model Wiring Diagrams, FIGURES 4a through 4c, as you read this Theory of Operation.

All Mermaid "cool only" air conditioning units are controlled and function exactly the same, regardless of the btu capacity of the unit. Units equipped with a "heat option" are controlled in the same manner as "cool only" units, but may employ completely different concepts for producing heat. The digital thermostat is the master control of the system and dictates the operational mode of the air conditioning unit through an electrical

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Contents Mermaid Marine AIR Conditioning Table of Contents Installation and Operation OverviewAIR Conditioner Installation Installing the Air Conditioner Unit AIR Conditioner Dimensions Unit BTU Width Length HeightCooling water in and out WaterPage Page Water Strainer Pump Water Out Electrical Power Air Ducting and Splitting Return AIR Requirements Return AirModel BTU SQ. Inches of Return High Pressure Switch Access Condensation RemovalPage Making contact with the hull Putting it all togetherSee Warning below Wire Connections System Operation PowerPriming The Pump Checking Out The System Setting the Current DAY and Time IntroductionPage Temperature Override and Temperature Hold Temporary Temperature OverrideNormal Operation Programming the ThermostatVacation Temperature Hold InstallationPage Water System MaintenanceAir System Winterization Electrical SystemAir Conditioning Unit and Water Pump Clean AIR ACT Amendments of 1990 Title VI C-1 Theory of Operation and Trouble ShootingTheory of Operation General Heating Options ElectricalCooling Water Trouble ShootingStandard 24v Thermostat In Cool Position No Operation Page Compressor Runs Fan Does Not No Water OutEvaporator Freezing Condensation Pan OverflowsHigh Pressure Switch Activates In Cooling Mode High Pressure Switch Activates In Heating ModeNo Heat Electric Heat Unit Fan Runs No Heat Reverse Cycle Unit Compressor And Fan RunOUR Normal Procedure for a Warranty Issue is AS Follows