UJ73ARbDirect Expansion SystemsRevised Operation of ContentsIF YOU HAVE A DIGITAL It and 5Safety of Return Air Grilles and Transition Pump 7Electrical Control Panel Checklist Review prior to Control Panel MCP Start Operations Controls Mechanical Control Panel Limited Warranty of 2005 Dometic Environmental Corporation All Rights Reserved Every precaution has been taken in the preparation of this manual to insure its accuracy However Dometicassumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of this product and information contained hereinIF YOU HAVE A DIGITAL CONTROLPlease refer to either the Elite Control manual L2230assport IO Control manual L2231or installation andoperation of those digital control panels Mechanical control information and wiring diagrams for both types of controlsare in this on the purchase of your Marine AirSystems Vector Compact air conditioner No matterwhich of the following features was the reason for yourpurchase of this air conditioner we are sure it will meetyour needs and will give you many years of efficient andtrouble free use The Vector Compact expansion air conditioners are designed for incorporating the following compact design with the condenser coil inthe evaporator shroudHigh efficiency rotary compressor or scroll 24KCupronickel condenser coilEnhanced fin designed evaporator coil2 deep drain pan with multiple condensate base padPrecharged and prewired systems for easyRotatable blower assemblyCharge Guard ensures environmental protectionand system integrityThis manual is intended to provide the to ensure proper installation operation andmaintenance of the unit The figures that are this manual can be found immediately afterthe warranty section Improper installation or misunderstood operating procedures can result in andor premature failure of these units sobefore proceeding please read this manual completelyThe Vector Compact units are covered under the Environmental Corporation contained in this manual In the interest of Dometics specifications and design aresubject to change without prior noticeTitle VI Section 608C1Effective July 1 1992 it shall be unlawful for anyperson in the course of maintaining servicing repairingor disposing of an appliance or industrial to knowingly vent or otherwise or dispose of any Class I or Class II substance used as a refrigerant in such appliance orindustrial process such substance to enter the environment Deminimis releases associated with good faith attempts torecapture and recycle or safely dispose of any suchforth in the proceeding sentenceClass I substances include CFC12Class II substances include HCFC22Marine Air Systems Corporation Dometic is a in the design and manufacture of comfort control systems refrigeration productsand battery charging products for demanding environments including commercial and recreational marinecraft vehicles and other applications We offer anunparalleled scope of products dealer networks applications support engineering resources and throughout the world Our team has manyyears of experience in the design manufacture application and support of our products Our practical experience and design capability allows our and sales to offer for your environmental control lines also include well known Cruisair Grunertand SentryHow It WorksYour selfcontained air conditioner consists of four maincomponents and a refrigerant gas circulating through thesystem The BLOWER draws warm cabin air across thefins on the EVAPORATOR where the heat from the air istransferred to the refrigerant in the evaporator coil Asthe refrigerant evaporates from a liquid into a gas itabsorbs the heat from the cabin air The COMPRESSORthen compresses the refrigerant gas and pumps itthrough the outer tube in the CONDENSER COIL Theseawater pump circulates cool seawater through theinner tube in the condenser coil this cools the refrigerant and condenses it into a liquid The heat from therefrigerant is exchanged to the seawater and The liquid refrigerant is then passed throughthe EVAPORATOR COIL and the cycle repeats Removing heat from the cabin air lowers its temperature Thecooled air is blown through the ducting and out thesupply air grilles For reverse cycle heating the refrigerant flows in the opposite direction through the reversingvalve Heat is transferred from the seawater in thecondenser coil to the refrigerant and then to the airblowing through the evaporator into the cabin will directly affect the ac units efficiencyThis ac unit can effectively cool your boat in up to 90F and heat in water temperaturesas low as 40F See Figure 1Unpacking and InspectionWhen the equipment is received all items should becarefully checked against the packing list to ensure allcartons have been received Move units in the normalup orientation as indicated by the arrows on eachcarton Examine cartons for shipping damage removingthe units from the cartons if necessary If the unit isdamaged the carrier should make the proper notation onthe delivery receipt acknowledging the damageCAUTION When unpacking and installing the 3knobcontrol if mechanical option is usedust betaken not to kink or break the copper cap tube whenuncoiling the sensing bulb The cap tube is hollow andkinking or sharp bends will inhibit system IMPORTANT Never install your air conditionerin the bilge or engine room areas Insure that theselected location is sealed from direct access tobilge andor engine room vapors Do not drain line within three 3eet of anyoutlet of engine or generator exhaust systems nor ina compartment housing an engine or generator norin a bilge unless the drain is connected properly to asealed condensate or shower sump and servicing of this system can be hazardous due to system pressure and electrical componentsWhen working on this equipment always described in the literature tags and labelsattached to the unit Follow all safety codes Wear safetyglasses and work gloves and place a fire to the work area The following is a summary ofElectrical shock hazard Disconnect voltage at mainpanel or power source before opening any coverFailure to comply may result in injury or death WarningThis component does not meet federal requirements for ignition protection Do not install inspaces containing gasoline engines tanks LPGCPG cylinders regulators valves or fuel linefittings Failure to comply may result in injury component is charged with R22 Effective July 1 1992 it shall beunlawful for any person to knowingly vent or release any class 1 as a refrigerant in a manner which permitsair act of 1990 Public law 101549 Title IV Section 608C Failure to comply may result in severe fines and minimize the hazard of electrical shock andpersonal injury this component must be Refer to the installation guidelines forfurther compressor temperature is normalDo not touchSelecting a good location for your air conditioner is themost important part of your preparations Be sure toconsider the size of the area you are cooling the needs and the size of the unit you havechosen Keeping in mind that cool air has a tendency tofall it is highly recommended that you locate the supplyair grille as high as possible in the cabin See Figures 2The Vector Compact unit should be installed as low aspossible BUT NEVER IN THE BILGE OR ENGINEROOM AREAS INSURE THAT THE SELECTED LOCATION IS SEALED FROM DIRECT ACCESS TO BILGEANDOR ENGINE ROOM VAPORS Installing the unit aslow as possible such as under a Vberth dinette seat orbottom of a lockerpossible creates an ideal airflow condition This type ofinstallation will prevent short or premature cyclingThe unit should be positioned on a firm level and the condensate drain line should rundownward from the unit to a suitable drain location Planall connections which must be made including drain seawater in and out electrical location of control and seawater pumpplacement to assure easy access for routing Tools RequiredScrews wrenchesWire and assorted bitsJig sawDuct tapeElectrical tapeTeflon tapeBeding compound to seal thru hull to secure unit pump strainer grilles The condensate drain pan is 2 high with up to four drainlocations During conditions of high humidity condensatemay be produced at a rate of approximately 12 gallonper hour With this in mind it is important to drains downward to a sump pump It is notrecommended to route condensate drains to the bilgeAfter the condensate drain installation is complete testthe installation by pouring a quart of water into the panand checking for good flow See Figure 4For installation of the condensate drain1Remove the aft facing watertight plug from the base2Slip the solid washer and the liquidseal washer ontothe PVC fitting in that order3Connect the fitting through the exposed hole in thebase pan with the locking nut4Securely tighten with two 2vide a5Attach a 58 ID reinforced hose to the hose barb andsecure with stainless steel hose clamps6Install the condensate drain hose downhill from theunit and aft to a sump7Two drain fittings may be used and the hoses teedtogether provided there is a minimum 2 drop form theNote The reason to use the aft facing drain location isso that water will tend to drain out of the pan when thevessel is under way However the boat owner shouldinspect the pan when the vessel is at rest If water isfacing then the drain on that edge should also beutilized This will help to prevent water from standing inthe pan See item 7 for instructions on connecting twodrain linesIMPORTANT Do not terminate condensate drain linewithin three 3eet of any outlet of engine or systems nor in a compartment housing anengine or generator nor in a bilge unless the drain isconnected properly to a sealed condensate or showersump pumpBlower AssemblyWith the Vector Compact you can achieve supply air discharge from a single unit by rotatingthe blower to the desired location It is ideal for as 130 of rotation are available with whichto position the blower Its advanced design allows theblower to be easily removed for rotating or servicing byremoving the two mounting ring screws and the the blower to the drain pan Rotate the blowerto allow the most direct flow of air to the supply air the mounting screws Plug any unused screwholes in the blower to prevent air lossMounting BracketsThe ac unit is supplied with a base pan that also servesas a condensate pan Mounting clip brackets are provided to secure the base pan onto a flat See Figure 5Supply Return Air Grillesand Transition BoxesInstall the supply air grille as high as possible in alocation that will provide uniform air distribution throughout the cabin grille louvers should be directed upwardThe return air grille should be installed as low and closeto the ac unit as possible to insure direct to the evaporator The return air grille should havea minimum four inches 4ance in front of itfree from any furniture or other obstructions In notowards a return air grille as this will cause the systemto short cycle Allow for adequate clearance behind thesupply air grillesor the transition box and The table in Figure 8 shows minimum grillesizes See the MAINTENANCE section of this manual forreturn air filter cleaning airflow is critical for the performance of theentire system It is highly dependent on the quality ofthe ducting installation The ducting should be run asstraight smooth and taut as possible minimizing thenumber of 90 bends two tight 90 bends can reduceairflow by 25 The table in Figure 8 shows minimumreturn air grille minimum area in square inches If atransition box is used the total area of supply air ductsgoing out of the box should at least equal the area ofthe supply duct feeding the box To calculate the squareinch area of a round duct multiply the radius by itself rand multiply that number by 31416 See Figure 8The following is a summary of proper ducting back the fiberglass insulation exposing the innermylar duct hose2Slide the mylar duct hose around the mount ring until3Screw 3 or 4 stainless steel sheet metal screwsthrough the duct hose into the transition ringMake sure to catch the wire in the duct hose with theheads of the screws Do not use band clamps as thehose will slide off4Wrap duct tape around the ducting and ring joint toprevent any air leaks5Pull the insulation back up over the mylar to the ring6Remove excess ducting and use the same at the supply air grilleBe appropriately sized for each applicationRun as smoothly and taut as possibleHave as few bends or loops as possibleBe securely fastened to prevent sagging during all excess ducting lengths trimmed offNot be flattened or when located in high heat load areas hullside mechanical compartments etcBe properly protected against potential damagewhen routed through open areasSeawater Pump and guidelines should be followed during the installation of the seawater system Since the circulation pumpis centrifugal and not selfpriming it must be mounted sothat it is always at least one foot below the water lineregardless of which tack the vessel is on Pump may bemounted horizontally or vertically however the dischargemust always be above the inlet Pump head should berotated toward the direction of water flow seawater speed scoop intake as far below the waterline and as close to the keel as possible in anyapplication but especially on a sailboat to keep theintake in the water when the boat heels over so thatair does not get into the system See Figure 7 forThe speed scoop intake must face forward and not beshared with any other pump A seawater strainer ismandatory between the shut off valve seacockpump to protect the pump from any foreign matterFailure to install a seawater strainer will void thepump warranty The seawater system should be installed with an upward incline from the speed scoop seacock through the strainer to the inlet of the pumpand then up to the inlet of the ac units condenser coilThe discharge from the ac unit should then run to theseawater outlet thruhull fitting which should be locatedwhere it can be visually checked for water flow and asclose as practicable to the waterline to reduce noise Allhose connections shall be secured by means of doublereversed stainless steel hose clamps Use teflon tape onall threaded connections The following is a summary ofthe seawater system the speed scoop thruhull inlet as close to thekeel and as far below the water line as possible facingforward Bed the scoop with a marine sealant designed for underwater use2Install a bronze full flow seacock on the speed scoopthruhull inlet3Install a seawater strainer below the level of the pumpwith access to filter4Mount the pump above the strainer and at least onefoot below the the seacock and strainer with an uphill run ofreinforced marine grade hose6Connect the discharge from the pump uphill to thebottom inlet of the ac units condenser coil with 58hose Connect the discharge from the condenser coilto the overboard discharge thruhull fitting with 58hose7Avoid loops high spots or the use of 90 elbows withseawater hose each 90 elbow is equivalent to 25 ofhose and a 90 elbow on the pump outlet is clamp all hose connections with stainless steelclamps reversing the clamps9Use teflon tape on all threaded connections10 Connect all metallic parts in contact with seawaterto the vessels bonding system including thespeed scoop inlet strainer pump and the airconditioner Failure to do so will void Connections GroundingAll ac units have a terminal strip mounted inside theelectric box The terminal strip is labeled for of the electrical supply ground wires andpump circuits A wiring diagram is provided in theelectrical box and in this manual The wiring diagram inthe electrical box supersedes the one in this manual andABYC standards The correct size circuit breaker shouldunits data plate label A minimum of 12 AWG boat cableshould be used to supply power to the ac unit and theseawater pump All connections shall be made with ringor captive fork terminals Turn off ac power supplycircuit breaker before opening electric box Each ac unit installed requires its own dedicated circuitbreaker If there is only one ac unit installed theseawater pump does not require a circuit breaker thewiring from the seawater pump is connected to theterminal strip in the electric box If two or more ac unitsuse the same seawater pump the pump wires will beconnected to a pump relay panel PRPnhas its own dedicated circuit breaker sized for the pump20 amp max Please see the wiring diagram furnishedwith the PRP NOTE PRP triac must have its mountingscrew installed in order to dissipate heat in the bilge andor below the use heat shrink type butt splicesField wiring must comply with ABYC electrical codesPower to the unit must be within the operating voltagerange indicated on the data plate Properly sized fusesor HACR circuit breakers must be installed for branchcircuit protection See data plate for maximum size mfsum circuit ampacity mcaAll units must be effectively grounded to minimize thehazard of electrical shock and personal injuryThe following are to be observed1AC alternating green wireustbe provided with the AC power conductors andconnected to the ground terminal marked GRNDthe AC power input terminal block of the unitsABYC standard E8 or between the vessels AC system grounding conductor green wireessels DC DirectCurrente or bonding system should be madeas part of the vessels wiring per ABYC standard E9or servicing or replacing existing equipment thatcontains a chassismounted ground stud the serviceperson or installer must check the vessels wiring forthe existence of the connection required in item 2aboveABYC standards are available fromAmerican Boat and Yacht MD 21036Telephone 410The ac unit must be connected to the ships bondingsystem to prevent corrosion due to stray or voltage All pumps metallic valves andfittings in the seawater circuit that are isolated from theac unit by PVC or rubber hoses must be to the vessels bonding system also This willhelp eliminate any possibility of corrosion due to straycurrent or voltageFAILURE TO PROPERLY GROUND AND BOND THESYSTEM WILL VOID WARRANTYIt is extremely important to insure that wiring and of a three phase power source is correctMarine wiring standards call for power source phases L1L2 and L3 to be colorcoded BLACK WHITE and These must be connected to the unit withthe proper sequence otherwise it will not If the wiring sequence is incorrect the Scroll type onlyif applicablewill run in the reverse direction at a significantly increased noise levelManual Control Panel MCPac unit The 3 knob MCP is configured either The cut out size is 25 by 70see MCP Figure 6or orientation Once the cut out ismade carefully uncoil the copper cap tube with return airsensor copper bulbtube through the hole and back to the ac unit Mount the return airsensor into the clips provided with the Vector Compactunit If the return air sensor cannot be mounted on theevaporator coil mount it behind the return air grille Thesensor must be mounted in the return air stream Makeelectrical connections according to the wiring diagramfound in the electric box andor in this manual prior to Refer to the Elite and Passport IO manualsfor installation and operation of those Cooling SystemSpeed scoop located as far below the water line andas close to the keel as possibleShut off valve sea cocklySeawater pump is at least one foot below water lineStrainer mounted below pump with access to stainless steel hose clamps on allTeflon tape on all threaded runs uphill from speed scoop and sea cock tostrainer pump and ac unit then downhill if possiblefrom ac unit to overboard dischargeWater flowing freely from overboard discharge whilepump is runningPump relay panel if used must have its own circuitbreaker sized for the pump 20 amp maxNot in engine room or bilge areas must be sealedaway from exhaust or fumesProper spacing allowed around unitAttached to solid level platform with hold down drain routed aft and down hill to a sealedBlower rotated toward supply air grilleThe wiring diagram is located in the electrical box Ifthat diagram is damaged or if you need a copy pleasecall Dometic with the unit part number serial numberand wiring diagram number all of which are located onthe unit data plateAll butt connections on pumps wire tightly crimped andheat shrunkAC power source installed and groundedbonded inaccordance with ABYC wires connected to terminal strip with captivefork or ring breakers sized according to specifications onDigital display cable is connected at both endsPump Relay Panel if usedbreaker sized for the pump but not to exceed 20 air grille mounted as high as possibleReturn air grille mounted as low and as close to theac unit as possibleReturn air grille mounted away from bilge vapors orexhaust fumesDucting is pulled taut straight smooth and with no excessQuick Start Operations seawater intake ball valve sea cockTurn on the ac circuit breaker If the seawater pumphas its own circuit breaker turn that onTurn the system onSet the desired cabin temperature set pointCheck for a steady solid stream of water from theoverboard that there is steady airflow out of the supply airgrilleIf the unit does not appear to be operating properlyrefer to guide linesNote Do not turn the unit off and immediately turn itback on Allow at least 30 seconds for Control Panel1Ensure seawater intake ball valve sea cock2Turn SYSTEM SWITCH control knob to OFF3Turn on AC circuit breaker If the seawater pump hasits own circuit breaker turn that on too Or if the pumpis connected to a Pump Relay Panel PRPnon that circuit breaker also4Turn the SYSTEM SWITCH control knob to STARTthis energizes the fan and seawater pump TurnTHERMOSTAT control knob to the coolest position byrotating fully clockwise If system has reverse cycleturn knob for heat5Check for a steady solid stream of seawater from theoverboard discharge6Turn FAN SPEED control knob clockwise to highestsetting for cooling or for heating7Verify that the fan is running and that there is steadyairflow out of the supply air grille8Turn the SYSTEM SWITCH to RUN this will start thecompressor The indicator light on the control set the thermostat allow sufficient time for the unitto coolheat the area to the desired temperature Whenthe area is sufficiently cooledheated turn the thermostat knob slowly toward the center position until itclicks once the indicator light will turn off Thethermostat is now set to maintain a constant temperature While heating if the ambient temperature is lessthan 50F set the FAN SPEED control knob to low forfive to ten minutes until the unit begins to heat wellthen increase the fan speed for more heat output andto prevent the system cycling on high pressureThe thermostat on the MCP control panel serves to cyclethe compressor on and off and provide an from cooling to heating reverse cycle onlywith a 35 differential Rotating the thermostat to the leftafter it has been set for cooling will cause the unit toheat If you rotate the thermostat to the right the unit willcool If the thermostat is left stationary after being setthe unit will cycle from cooling to neutral or heating toneutral depending on the cycle units have a reversing valve that must beenergized periodically to keep the internal parts movingfreely To accomplish this switch the AC into HEAT for afew seconds once a monthNote Do not turn the unit off and immediately turn itback on Wait at least 30 sections following these Will not startPossible circuit breaker is offTurn circuit breaker on at ships panel2Control is not turned onSee mechanical control section of this manual forMCP controls or see the digital control manual forElite or Passport IO controls3Wrong wiring at terminal stripCheck wiring diagram and correct if butt connectors power supply and open electric boxcheck wiring diagram correct if line voltage is power source propervoltage Check wiring and terminals for proper sizesand connections Verify with a voltmeter that thepower at the unit is the same as the power sourceFault Fan is not runningCheck specific control sectionFault No cooling or set point is satisfiedLower or raise set seawater flowClean seawater strainer Check for obstructions atspeed scoop thruhull inlet Check for a good steadyflow from the overboard pump may be hose from pump discharge to purge air fromlineLoss refrigerant gasCheck ac unit for refrigerant oil leakage call temperature too high for cooling ortoo low for temperature will directly affect ac This ac unit can effectively cool your boatin water temperature up to 90F and heat if reversecycle option is installedater as low as 40FFan coil is iced in coolingCheck your specific control section7Fan is not runningCheck your specific control plumbing is that seawater plumbing is installed per theguidelines in this manual9 Digital control is programmed for Cool or Heatonly or mechanical control thermostat isrotated to far towards either Cooler or WarmerSee digital control manual for reprogramming or seemechanical control operation section in this manual10High pressure switch open in seawater flowStrainer or intake may be plugged sea cock may beclosed check seawater hose for kinks or pump operation Check pump circuit breaker pressure switch open in airflowRemove any obstructions in return air stream Cleanreturn air filter and grille Check for crushed orrestricted ducting ducting must be as straightsmooth and taut as switch is open in heating modeSystem may cycle on highpressure if is above thermal overload is open due toeither of the above needs to cool down Turn system off fora while it may take up to three hours to resetthermal overloadFault No is cool only or if reverse cycle reversingvalve may be stuckTap reversing valve lightly with rubber mallet whileunit is in heat mode Call for service if that does notcorrect the problemL2254 Low is blockedRemove any obstructions in return air stream Cleanreturn air filter and grille Check for crushed orrestricted ducting ducting must be as straightsmooth and taut as possible2Fan Coil is icedSee belowFault Fan coil is icedPossible set point is too low2Improper airflowRemove any obstructions in return air stream Cleanreturn air filter and grille Check for crushed orrestricted ducting must be as straight smooth andtaut as possible See the Digital Controls section below for reprogramming options3Supply air is supply air so that is not blowing into thereturn air stream Seal any air leaks on duct4Humidity level too highClose hatches and doors5When all else failsSwitch ac to heat until ice melts or use hair dryer toFault Water coil is iced in the temperature is below 40FShut down system to prevent damage to condenserAllow coil to defrostFault System runs point temperature is improperly set too lowfor cooling or too high for heatingRaise or lower set point2Porthole or hatches openClose all port holes and temperature too high for cooling or tolow for temperature will directly affect the acunits efficiency This ac unit can effectively coolyour boat in water temperatures up to 90F and heatif reverse cycle option is installedater as lowas 40F4Improper air sensor locationCheck your specific control sectionDigital Controls Digital display panel is not litPossible display cable plugs are not makingcontact unplugged dirty bent or brokenWith POWER OFF at the circuit breaker removetor or entire display cableFault Fan is not running or control is programmed for either fancycling with compressor or continuous fanElite Control Press and hold the fan button for 5 seconds to change to con so fan will stay on continuously or to cyc so the fan cycles with the IO Control Reprogram parameter P14Note After the compressor cycles off the fan willcontinue to run for 2 minutes in cool mode and 4minutes in heat mode regardless of parameterFault Fan is not running but thePossible triac on Passport IO circuit boardSend for repair or call local service technician seeback of book for a listingL2254 Fan runs continuously although itis set to cycle with triac on Passport IO circuit boardSend for repair or call local service technician seeback of book for a listingFault No cooling or control programmed for heat or coolonlyElite Control Press and release the Mode buttonbottom right corner of IO Control Reprogram parameter P12HPF or LPF is displayedSee belowFault No heatPossible Control may be set to Electric Heat notReverse CycleElite Control Reprogram parameter P13Passport IO Control Reprogram parameter P15Fault Unit switches to heat while in feature enabled due to coil icing upElite Control Reprogram parameter P7Passport IO Control Reprogram parameter P8Fault Fan coil is icedPossible airflowSee the General section above firstbefore reprogramming digital parameter P7 for Elite or P8 for PassportIO If deicing cycle does not melt ice switch ac toheat until ice melts or use hair dryer to melt iceIf problem persists reprogram Low Fan Speed Limitfor maximum value Set P2 to 55 for Elite or set P3to 64 for Passport IOFault System runs air sensor locationVerify display head location with criteria found in thecontrol manual Install alternate air sensor if necessaryFault HPF is switch is open in coolingto improper seawater flowStrainer or intake may be plugged seacock may beclosed check seawater hose for kinks or pump operation check pump circuit breaker switch open in airflowRemove obstructions in return air stream Clean airfilter and grille Check for crushed or ducting must be as straight smooth andtaut as possibleIf problem persists reprogram Low Fan Speed Limitfor maximum value Set P2 to 55 for Elite or set P3to 64 for Passport IO And set the Reverse FanSpeeds During Heating Mode parameter to rEFP12 for Elite or P13 for Passport IOuallyset fan speed to highFault LPF is switch is open due to low seawater andor low return air restarting the ac unit the optional low pressureswitch has a ten minute shutdown time delay thatmay be in affect2Low pressure switch is open due to loss ac unit for refrigerant oil leakage call serviceFault ASF is failed face plate air sensor alternateair sensor or display cableUnplug alternate air sensor if installed or plug inalternate air sensor if not installed Try anotherdisplay cableL2254 jacksocket in display head or oncircuit boardVisually check to see that pins inside socket are notbent or corroded Repair or replace display or circuitFault PLF is displayed Elite DigitalControl onlyPossible that seawater flow through the conCheck for adequate seawater flow Verify pumpoperation Inspect the condenser coil it may needcleaning see maintenance section Sensor may befaulty replaced if necessary Call for service techMCP Mechanical Control Fan is not system switch is not set properlySet MCP system switch to START for fan only orRUN for cooling and heating if reverse cycle2MCP fuse blown3Wire became disconnected or loosened or tighten verify with wring diagram inthis manualFault System runs MCP air sensor locationVerify return air sensing bulb location with criteriafound in this ValvesReverse cycle units have a reversing valve the valvemust be energized periodically to keep the internal partsmoving freely To do this switch the ac unit into heat fora few seconds once a monthSeawater StrainerInsure that your pump receives adequate seawater flowby regularly cleaning the strainer basket the overboard discharge for a steady stream ofwater Check seawater intake speed scoop for obstructions Make sure hoses are not looped kinked orcrushed1With the system turned off at the circuit breaker on theships panel disconnect the inlet and outlet connections of the condenser coil2Use chemical resistant hoses MAS white PVC 58ID etcthe outlet of a chemical resistant submersible pumpMAS P500 pump etcthe coil outlet flow freely into the container a strainer or piece of screen over the inlet of thewith a 5 solution of muriatic or hydrochloric acid andfresh water or use a premixed Use a large container as possible to hold theCAUTION Avoid spilling or splashing the solutionFollow all warnings and given by of any acids or premixed the pump and circulate the solution through thecondenser coil for 1545 minutes depending upon thesize of the coils and the extent of the indicate when the contamination removal has5Circulate fresh water through the coil to flush any6Restart the system and check operational parametersto ensure thorough cleaning has taken place Additional cleaning may be necessary with extremeWARNING For the purpose of protecting the environment dispose of any contaminated acid solutions inaccordance with federal state andor local Air FiltersCheck the return air filter about once a month and cleanas necessary To clean the filter remove it from the unitrinse with water air dry and reinstallThere are several methods of winterization some ofwhich work better than others The four various using a 5050 nonpolluting solution are1Pumping of antifreeze solution into the overboard thruhull fitting and discharging through the intake thruhull2Use of the seawater pump to pump antifreeze the system and discharging through theoverboard thruhull fitting Close sea cock removehose from strainer discharge raise hose above pumpso pump does not lose its primefreeze solution Pump solution through system Thestrainer and hose to sea cock will also need to bedrained of water3Use of pressurized air injected at the fitting and the water being the seawater intake fitting4Use of pressurized air to force water from the intakethrough the overboard dischargeAny method that causes the antifreeze solution to flowdownward is the method of choice By this means theantifreeze solution will displace any water trapped andeliminate the possibility of freezing in hidden areas Inaddition since the seawater pump utilizes a impeller the impeller should be removed from thewet end assembly wiped with an alcohol solution andstored in a warm dry area until commissioning takesplaceNote Collect all discharged liquids and recycle or dispose of in a proper mannerThe following warranty is extended to cover marine manufactured or supplied by Corporation and is subject to qualifications indicated Dometic warrants for the periods set forthbelow that products manufactured or supplied by it will befree from defects in workmanship and material providedsuch products are installed operated and maintained inaccordance with Dometics written instructionALL IMPLIED WARRANTIES INCLUDING AND FITNESS FOR A PARTICULAR PURPOSEARE LIMITED TO THE TERMS AND PERIODS OFWARRANTY SET FORTH BELOW AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL ARE with the Elite or Passport IO digital controls Coverage applies to units manufactured on or afterPassport IO digital controls at the Dometic comprising of the Passport IO circuitboards Elite or Passport IO digital displays and associated cables are warranted for a period of three 3earsfrom the date of installation but not to exceed four 4years from the date of manufacture at the Dometicfactory All other components comprising a completesystem excluding pumps and pump relay panelsnew installation are warranted for a period of two 2years from the date of installation but not to exceedthree 3ears from the date of manufacture at theDometic factory Pumps and pump relay panels arewarranted for a period of one 1ear from the date ofinstallation but not to exceed two 2ears from the dateof purchase OEM installed equipment warranties beginwith the purchase of the vessel not from the date ofWarranty with MCP Mechanical Control comprising a complete system on a are warranted for a period of one 1ear fromthe date of installation but not to exceed two 2ears fromthe date of manufacture at the Dometic factory OEMinstalled equipment warranties begin with the purchase ofthe vessel not from the date of installationIn addition Dometic will pay labor costs and travel asSchedule of Limited Warranty LIMITED WARRANTY AGREEMENT for removal and reinstallation of such componentsfor a period of one 1ear from the date of not to exceed two 2ears from the date of manufacture at the Dometic factory OEM installed begin with the purchase of the vessel notfrom the date of installation Warranty will be paid inaccordance with our established schedule of for warranty repairs is only made toDometic authorized service will repair or replace at its option to be defective due to faulty materials or workmanship when such components examined by an dealer or a factory service representative arefound to have a defect for which the company is responsible Refer to Manufacturers Limited Warranty Policyfor complete coverage and exclusions are warranted for the duration of the remaining warranty period in effect on the original componentIn the event that a unit has to be returned to the factoryit must be properly packaged to prevent shipping damages If packaging is not available Dometic will provide itat no charge The warranty may be voided on any pieceof equipment or component that is damaged due toimproper packagingThis limited warranty is extended in lieu of all agreements or obligations expressed orimplied concerning Dometics components This warrantyis extended only to the original purchaser and is This warranty shall be governed by the lawsof the State of Florida and gives the original first enduser definite legal rightsThis warranty does not cover damages incidental to the failure of Dometics but not limited to normal wear accidentmisuse abuse negligence improper installation lack ofreasonable and necessary maintenance alteration civilNo person or dealer is authorized to extend any or to assume any other liabilities on Dometicsbehalf unless made or assumed in writing by an officerFig 1Overview of Vector CompactFig 2Placement of Vector CompactFig 3Spacing Allowances Unit DimensionsFig 4Installation of Condensate DrainFig 5Mounting BracketsFig 63Knob ControlFig 7Seawater Pump and Plumbing 8Ducting and Grille SizingFig 9Wiring Diagrams for Mechanical Controls VCM516 24KFig 10Wiring Diagrams for Mechanical Controls VCM516HV 24K 230V3PhFig 11Wiring Diagrams for Digital Controls VCD516 VCDVHD 24KFig 12 Wiring Diagrams for Digital Controls VCD516HV VCDVHD 24K 460V3PhFig 13 Wiring Diagrams for Digital Controls VCD18KHV VCM18KHVFig 1Overview of Vector CompactFig 2Placement of Vector CompactFig 3Spacing Allowances Unit NOTE THE INFORMATION CONTAINED WITHIN THIS DOCUMENT IS THE PROPERTY OF DOMETIC CORPORATION ANY ATTEMPT TO COPY OR DISTRIBUTE WITHOUT WRITTEN CONSENT FROM DOMETIC CORPORATION SHALL BE CONSIDERED UNLAWFUL AND CAN BE CONTESTED IN A COURT OF LAWPART BYAPR BYDometic Environmental Corporation Marine AirREVISION HV VECTOR COMPACT PSPRT IO MECH SPACING ALLOWANCES AND TABLE DIMS MODEL VCDM18K1HV TO 5KHV DIMSREVISED TO 2 FROM 5Mounting bracketsFig 4Installation of condensate drainFig 63Knob ControlFig 8Ducting and Grille SizingFig 7Seawater pump and plumbing 9Wiring Diagrams for Mechanical Controls VCM516 24KFig 10 Wiring Diagrams for Mechanical Controls VCM516HV 24K 230V3PhFig 11 Wiring Diagrams for Digital Controls VCD516 VCDVHD 24KFig 12Wiring Diagrams for Digital Controls VCD516HV VCDVHD 24K 460V3PhFig 13 Wiring Diagrams for Digital Controls VCD18KHV Environmental N Andrews Ave Ext Pompano Beach FL 330691497 USA Phone 9549732477 Facsimile 9549794414For Sales and Service Calls within Europe and the Middle East please contact 44 0Website Email