PREFACE

Congratulations on the purchase of your Marine Air Systems' RADOME air conditioner. No matter which of the following features was the reason for your purchase of this air conditioner, we are sure it will meet your needs and will give you many years of efficient and trouble free use. The RADOME a/c unit is a self-contained direct expansion air conditioner designed for custom applications incorporating the following features:

High efficiency rotary compressors

Raised lance fin designed evaporator coil

Pre-charged and pre-wired systems for easy connections

Charge Guard® ensured environmental protection and system integrity

The PASSPORT II microprocessor based digital controller included with this unit offers the most technologically advanced design specifically for the unique requirements of Marine Air Systems' environmental control systems. The controller has been designed with flexibility and the following "user friendly" features customers require for their applications:

Non-volatile memory

Low voltage display panel

Face plate air sensor for accurate temperature control

LED temperature displayed in Fahrenheit or Celsius

Compressor pressure protection

This manual is intended to provide the information necessary to ensure proper installation, operation, and maintenance of the unit. Improper installation or misunderstood operating procedures can result in unsatisfactory performance and/or premature failure of these units, so before proceeding please read this manual completely.

The RADOME a/c unit is covered under the existing Marine Air Systems' warranty policy contained in this manual. In the interest of product improvement, Marine Air Systems' specifications and design are subject to change without prior notice.

Marine Air Systems, Inc. (MAS) is a manufacturer of air conditioning and refrigeration equipment for the marine industry. MAS is committed to innovative technology, competitively priced products and market leadership. The MAS team has many years of experience in the design, manufacture, application and support of marine air conditioning and refrigeration. Our practical experience and design capability allows our application engineers and sales representatives to offer optimum solutions for your environmental control requirements. Marine Air Systems, Inc. is A Member of the Taylor Made Group_TM.

UNPACKING AND INSPECTION

When the equipment is received, all items should be carefully checked against the packing list to ensure all cartons have been received. Move units in the normal "up" orientation as indicated by the arrows on each carton. Examine cartons for shipping damage, removing the units from the cartons if necessary. If the unit is damaged, the carrier should make the proper notation on the delivery receipt acknowledging the damage.

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

HOW IT WORKS:

Your self contained air conditioner consists of four main components and a refrigerant gas circulating through the system. The BLOWER draws warm interior air across the fins on the EVAPORATOR where the heat from the air is transferred to the refrigerant in the evaporator coil. As the refrigerant evaporates from a liquid into a gas it absorbs the heat from the warm air. The COMPRESSOR then compresses the refrigerant gas and pumps it through the outer tube in the CONDENSER COIL. The heat from the refrigerant is exchanged to the condenser and discharged out of the dome. The liquid refrigerant is then passed through the EVAPORATOR COIL and the cycle repeats. Removing heat from the interior dome air lowers its temperature. The cooled air is blown out the supply air grille on the unit.

INSTALLATION

SAFETY CONSIDERATIONS

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. Follow all safety codes. Wear safety glasses and work gloves and place a fire extinguisher close to the work area. The following is a summary of safety considerations:

! DANGER

ELECTRICAL SHOCK HAZARD. DISCONNECT VOLTAGE AT MAIN PANEL OR POWER SOURCE BEFORE OPENING ANY COVER. FAILURE TO COMPLY MAY RESULT IN INJURY OR DEATH.

! WARNING

THIS COMPONENT DOES NOT MEET FEDERAL REQUIREMENTS FOR IGNITION PROTECTION. DO NOT INSTALL IN SPACES CONTAINING GASOLINE ENGINES, TANKS, LPG/CPG CYLINDERS, REGULATORS, VALVES OR FUEL LINE FITTINGS. FAILURE TO COMPLY MAY RESULT IN INJURY OR DEATH

NOTICE

THIS COMPONENT IS CHARGED WITH HYDROCHLOROFLUOROCARBON (HCFC) REFRIGERANT R22. EFFECTIVE JULY 1, 1992 IT SHALL BE UNLAWFUL FOR ANY PERSON TO KNOWINGLY VENT OR OTHERWISE KNOWINGLY RELEASE ANY CLASS 1 (CFC) OR CLASS 2 (HCFC) SUBSTANCE AS A REFRIGERANT IN A MANNER WHICH PERMITS SUCH SUBSTANCE TO ENTER THE ATMOSPHERE PER THE CLEAN AIR ACT OF 1990. PUBLIC LAW 101-549 TITLE IV SECTION 608-C. FAILURE TO COMPLY MAY RESULT IN SEVERE PENALTIES, INCLUDING FINES AND IMPRISONMENT.

! WARNING

TO MINIMIZE THE HAZARD OF ELECTRICAL SHOCK AND PERSONAL INJURY, THIS COMPONENT MUST BE EFFECTIVELY GROUNDED. REFER TO THE INSTALLATION GUIDELINES FOR FURTHER INFORMATION.

ELECTRICAL

All RADOME units with PASSPORT II have a terminal strip on the circuit board mounted in the electric box. Remove electric box panel to access circuit board (see diagram). The terminal strip is labeled for proper connections of the electrical supply and ground wires (see wiring diagram in drawing appendix). The correct size circuit breaker should be used to protect the system as specified on the a/c unit's data plate label. All connections shall be made with solderless terminals. Turn off a/c power supply circuit breaker before opening electric box. Each a/c unit installed requires its own dedicated circuit breaker.

OPERATION

OPERATIONS CHECKLIST

Turn on the A/C circuit breaker.

Turn the system on by pressing the POWER button.

Set the temperature (set point) to 85ºF by using the UP or DOWN buttons.

Verify that there is steady airflow out of the supply air grille.

If the unit does not appear to be operating properly, refer to troubleshooting guidelines.

Note: Do not turn the unit off and immediately turn it back on. Allow at least 30 seconds for refrigerant pressure equalization.

PASSPORT II CONTROL

POWER BUTTON: Press and release to turn unit on and off.

NOTE: To "press and release" a button, press and hold for one second and then release.

FAN BUTTON: NOT USED ON RADOME A/C.

UP & DOWN BUTTONS: Press and hold either button until desired temperature (set point) is displayed. Press either button momentarily to show current set point. Radome a/c set point is 85ºF.

COOL LED: Lights when the compressor is running in cool mode or in automatic mode while cooling.

FAN LED: NOT USED ON RADOME A/C.

HEAT LED: NOT USED ON RADOME A/C.

DISPLAY WINDOW: Shows current temperature. Also used in viewing and setting program parameters.

AIR SENSOR: Dome temperature is detected by the face plate air sensor, located in the bottom edge of the display.

BLANK DISPLAY FOR NIGHT TIME OPERATION: Press the FAN and DOWN buttons simultaneously to blank the display for night time operation. The appropriate LEDs will remain lit during cooling and heating. When the desired temperature has been achieved, the middle segment of the display window will remain lit to indicate that the system is on. Press any button to return to normal display mode.

MODES OF OPERATION

COOL ONLY MODE: When the Passport II is configured for cool only mode, only cooling systems will be operated as required.

HEAT ONLY MODE: NOT USED ON RADOME A/C.

AUTOMATIC MODE: NOT USED ON RADOME A/C.

HUMIDITY MODE: NOT USED ON RADOME A/C.

AUTOMATIC FAN MODE: NOT USED ON RADOME A/C.

MANUAL FAN MODE: NOT USED ON RADOME A/C.

CIRCULATION MODE (FAN ONLY): NOT USED ON RADOME A/C.

PROGRAMMING THE PASSPORT II

The program mode is used to adjust operating parameters to tailor the system for efficient operation and to allow for user flexibility. Installation variables such as ducting, sensor location and system layout effect the operation of the overall system. Custom programing allows the system to operate as efficiently as possible in any given installation.

TO ENTER PROGRAM MODE: With the system off, press and hold the POWER button for five seconds until the letter "U" appears in the display window. Release the button and the first parameter's setting appears followed by "U 1".

TO UNLOCK PROGRAM MODE: After entering the program mode, simultaneously press and release the POWER and DOWN buttons.

TO SELECT PROGRAM PARAMETER: Press and hold the FAN button to scroll through the parameters indicated by the program number. Programs are described in the following table.

TO CHANGE THE PROGRAM PARAMETER: Use the UP and DOWN buttons to select data or set the desired limits. The range of parameter settings is listed in the following table.

TO RESET DEFAULT SETTINGS: With the system off, press and hold the POWER button for ten seconds until the software version number (A##) appears in the display window.

TO LOCK NEW DEFAULT SETTINGS: Once the desired program changes have been made and before exiting the program mode, simultaneously press and release the UP and DOWN buttons. Locking new defaults will render the factory defaults obsolete. Make note of the new defaults in the following chart for future reference.

TO EXIT PROGRAM MODE: Press the POWER button or press no button for sixty seconds. The software version number is displayed for one second prior to exiting the program mode.

PROGRAMMABLE PARAMETERS:

Program Number	Description	Default Setting	New Default	Range
U 1	Operating Mode	1	DO NOT CHANGE	0 = automatic mode 1 = cool only mode 2 = heat only mode
U 2	N/A
U 3	N/A
U 4	N/A
U 5	Temperature Calibration	0		+10°F
U 6	Compressor Fail-safe Protection HHH = high freon pressure PPP = low freon pressure (option)	3		0 = fail safe protection off 1=continuous restarts, no display 2=continuous restarts, w/display 3=3 failures, display, reset required
U 7	Fahrenheit or Celsius Temperature Display	0		0 = ºF 1 = ºC
U 8	N/A
U 9	N/A
U10	N/A
U11	N/A
U12	N/A
U15	N/A

U 1 OPERATING MODE: The operating mode is used to select heating, cooling, or automatic modes. Zero (0) selects automatic mode, one (1) selects cooling mode and two (2) selects heating mode. The Radome a/c should be programmed for cooling mode (1).

U 2 HIGH FAN SPEED LIMIT: N/A

U 3 LOW FAN SPEED LIMIT: N/A

U 4 COMPRESSOR STAGING TIME DELAY: N/A

U 5 TEMPERATURE CALIBRATION: Use this feature to calibrate the air sensor within a range of ±10°F. The factory default is 0°F.

U 6 COMPRESSOR FAIL-SAFE PROTECTION: This feature is provided to monitor the refrigerant circuit. When a high head pressure condition occurs the display will flash "HHH", when the refrigerant system is low on pressure "PPP" will flash only if the optional low pressure switch is installed. This display indicates that the system requires maintenance. See the TROUBLESHOOTING GUIDELINES in this manual. The four parameter settings are:

Zero (0): Turns off all protection, no action is taken and no message displayed.

One (1): No message displayed with 90 seconds between continuous restarts.

Two (2): Message displayed with 90 seconds between continuous restarts.

Three (3): Message displayed with three 90 second restarts, manual reset is required.

The factory default is three (3).

U 7 FAHRENHEIT OR CELSIUS TEMPERATURE DISPLAY: The PASSPORT II can display temperature in either degrees Fahrenheit (ºF) or degrees Celsius (ºC). Setting to zero (0) displays ºF and setting to one (1) displaysºC. The factory default is zero (0).

U 8 ALTERNATE AIR SENSOR OPERATION: N/A

U 9 REVERSED FAN SPEEDS DURING HEATING: N/A

U10 CONTINUOUS FAN OPERATION OR CYCLE FAN WITH COMPRESSOR: N/A

U11 REVERSE CYCLE OR ELECTRIC HEAT: N/A

U12 FAN MOTOR TYPE SELECTION: N/A

U15 DE-ICING CYCLE: N/A

TROUBLESHOOTING GUIDELINES

FAULT	POSSIBLE REASON	CORRECTION
Will not start.	A/C circuit breaker is off.	Turn circuit breaker on at ship's panel.
	Wrong wiring at terminal strip.	Check wiring diagram; correct if necessary.
	Input line voltage is insufficient.	Check power source (shore/generator) for proper voltage. Check wiring and terminals for proper sizes and connections.
Passport display panel is not lit.	8-pin display cable plugs are not making contact (unplugged, dirt, bent, or broken pins).	With POWER OFF at the circuit breaker, remove connector and inspect. If damaged, replace connector or entire display cable.
No cooling.	Temperature set point is above ambient temperature.	Set point should be 85ºF.
	Passport programmed for heat.	Reprogram parameter U1 for cooling.
	Obstructed condenser air flow.	Check for obstructions at condenser air inlet.
	Fan is not running.	See below
	Coil is iced.	See below
	"HHH" is displayed on panel.	See below
	"PPP" is displayed on panel.	See below
No air flow.	Air flow is blocked.	Locate obstructions, clean return air filter and grille.
	Coil is iced.	See below
Coil is iced.	Thermostat set point is too low.	Set point should be 85ºF.
	Improper air flow.	Clean return air filter or remove obstructions from return air stream.
"HHH" is displayed on Passport panel.	High pressure switch is open (in cooling) due to improper condenser air flow.	Condenser air stream may be blocked, verify condenser operation.
"PPP" is displayed on Passport panel.	Low pressure switch is open due to loss of refrigerant.	Check a/c unit for refrigerant oil leakage, call service technician (see back of manual).
System runs continuously	Set point temp. is programmed too low for cooling.	Set point should be 85ºF.
	Port hole or hatch open.	Close all port holes and hatches.

MAINTENANCE

Condenser Coil

Check the condenser coil for build up of dust of soot. Wipe with a dry cloth.

Return Air Filters

Check the return air filter about once a month and clean as necessary. To clean the filter, remove it from the unit, rinse with water, air dry and reinstall.

MANUFACTURERS LIMITED WARRANTY AGREEMENT

The following warranty is extended to cover products manufactured or supplied by Marine Air Systems Inc., and is subject to qualifications indicated.

Marine Air Systems warrants for the periods set forth below that products manufactured or supplied by it will be free from defects in workmanship and material, provided such products are installed, operated, and maintained in accordance with Marine Air Systems' written instruction.

ALL IMPLIED WARRANTIES INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO THE TERMS AND PERIODS OF WARRANTY SET FORTH BELOW AND, TO THE EXTENT PERMITTED BY LAW, ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED.

The HSA16K-C(Z) and its components are warranted for a period of one (1) year from the date of installation.

Marine Air Systems Inc. will repair, or replace at its option, components found to be defective due to faulty materials or workmanship, when such components, examined by an authorized service dealer or a factory service representative, are found to have a defect for which the company is responsible. Replacement components are warranted for the duration of the remaining warranty period in effect on the original component.

This limited warranty is extended in lieu of all other warranties, agreements or obligations, expressed or implied, concerning Marine Air Systems' components. This warranty shall be governed by the laws of the State of Florida and gives the original first end user definite legal rights.

This warranty does not cover damages incidental and or consequential to the failure of Marine Air Systems' equipment including but not limited to; normal wear, accident, misuse, abuse, negligence or improper installation, lack of reasonable and necessary maintenance, alteration, civil disturbance, act of God. Other items such as labor, travel time charges, mileage charges, telephone, fax, tolls, or parking fees are not covered under the warranty.

No person or dealer is authorized to extend any other warranties or to assume any other liabilities on Marine Air Systems' behalf, unless made or assumed in writing by an officer of Marine Air Systems, Inc. DRAWING APPENDIX 230VAC Radome - Wiring Diagram 115VAC Radome - Wiring Diagram 230VAC Split Radome - Wiring Diagram Radome - Mechanical Drawing Split Radome - 2 Mechanical Drawings Radome - Mounting Instructions Hatchway Covers Radome - Mounting Template

Copyright 1997 Marine Air Systems, Inc. All Rights Reserved

Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Marine Air Systems assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of this product and information contained herein.