Raritan Electric Water Heater
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Engineering Company Inc Electric Water Heaters With or Without Optional Heat Exchanger INSTALLATION AND MAINTENANCE INSTRUCTIONS MOUNTING THE HEATER water t o run a few minutes to expel all air from water The heater should be installed in a location where it heater and lines This is VERY IMPORTANT because will not be subjected to external water if air remains in the heater and the electric heating salt water The life of a heater will begreatly extended element is not fully submerged the element will burn by choosing a protected location A heater located out when the power is turned on in a sail locker for example cannot be expected t o The safety relief valve should be connected to hose or last as long as one installed in a clean dry engine piping so that overflow can run unrestricted into the room Mount the heater so that the electrical cover bilge This will prevent any overflow or dripping from plates plumbing nipples and heat exchanger if used causing damage to the heater jacket or base are accessible Using the three mounting lugs provided securely ELECTRICAL mount the heater t o the deck or other sturdy area CAUTION No 115 or 230 volt AC wiring should be I t is preferable that bolts nuts and lockwashers be done by other than a qualified electrician used but if wood screws or lag bolts must be used Protect the 115 volt shore line with a 15 amp fuse or they should be heavy enough t o support the strain circuit breaker 10 amp for 230 volt units a Ground when the heater is filled with water and the boat is Fault Circuit I nterrupter G FCI in the correct value rocking Raritan 20 gallon water heaters R20 R20E may be included in the installation for additional NP20 require auxiliary bracing to support the weight safety Use only STRANDED 123 cable t o the of the tank filled with water when the boat is in heater Never use solid wire ROMEXtype cable heavy seas Likewise i t is desireable to add auxiliary on a boat vessel vibration can cause solid wire to bracing to the 6 and 12 gallon models especially if break due t o metal fatigue US Coast Guard In the boat may be subject to excessive heeling and running the cable to the heater support it securely at pitching in heavy seas frequent intervals Do not run it in the bilge Allow about 12 of extra wire to make necessary connect PLUMBING ions Remove the large rectangular cover which gives To connect the heater t o the cold water supply in access to the electrical connection points Strip 8 stall a tee in the cold water supply line From the of the outer insulation from the end of the cable branch of the tee connect a line to the lower exposing the three separate insulated wires Loosen heater connection marked COLD A check valve the strain relief connector in the smaller cover plate MUST be in this line to prevent hot water backflow and insert the cable Tighten the strain relief con into the cold water lines Also it is a good idea to nector onto a portion of the cable that was not install a drain valve between the check valve and the stripped Strip the insulation from the three wires heater to bare about of the stranded wire Attach black The upper heater connection marked HOT is con and white wires to thermostat per installation dia nected to the hot water faucets shower etc Heat gram Use crimpon terminal ends for a secure install resistant flexible hose or poly tubing suitable for the ation Do not use solder to connect wires as it in temperature and pressure limits of the safety relief effect makes a solid wire of the strands subjecting valve 75 PSI and 210 degress F may be used for it to the possibility of breaking due t o metal fatigue both cold and hot connections Secure all lines to from vibration Join the green wire t o one of the four the boats structure a t frequent intervals mounting bolts on the heating element using a crimp Avoid sharp bends and 90 degree ells in the plumbing on terminal end Place the terminal protector in its wherever possible as they reduce water flow Should correct position replace the access cover and double copper fittings be desired avoid applying heat to the check t o be sure the tank is filled with water before nipples protruding from the heater Solder fittings turning on electricity This can be verified if cold first then connect to the heater the nipples contain a water runs out of any hot water faucet After turningi nonmetallic lining which will be destroyed by heat from soldering fittings After all hot water lines on the electricity the water should be noticeably warm within 30 minutes Twenty gallon models R20 have been completely installed open the hot water R20E NP20 will take somewhat longer to initially taps and turn on the water pressure system Allow the heat the waterTURNING ON THE ELECTRICITY WITH NO ELEMENT IN A VERY SHORT TIME The pre To determine the proper setting of the gate valve 4 best winterized together with the onboard water presWATER IN THE TANK OR WITH THE WATER ceding warning must also be remembered during the engine should be operated at full throttle with the sure system This is accomplished by pumping allLEVEL BENEATH THE IMMERSION HEATING springtime commissioning gate valve wide open When the engine temperature the water from the boats fresh water tanks thenELEMENT WILL BURN OUT THE HEATING has stabilized gradually close the valve until the pouring nontoxic antifreeze solution propylene engine temperature begins to rise The valve should glycol NOT ethylene glycol directly into the fresh then be reopened enough to establish the proper water tanks Turn on the water pressure pump and engine operating temperature Engine temperature open all faucets When the antifreeze solution comes Replaceable anode insi I A I should be monitored to verify that the entire cooling system is functioning correctly out of all faucets both hot and cold the whole system is safe including the pump As a large quantity of antifreeze is required to get the correct ratio of this removable nipple The information above is only a general guideline and DIMENSIONS any installation is made at the risk of the installer antifreeze to water it is not usually an economical No responsibility to Raritan Engineering Company method but it is by far the safest MODEL A B C D E Inc is to be presumed or implied from these general An alternate method is to shut off the electricity instructions open all hot water taps on the boat to relieve the 6gal 14 16 114 10 1 1 8 3332 7 112 pressure then remove both lines from the heater and ADDING A HEAT EXCHANGER allow it to drain After it has drained blow it out 12gal 1 8 159116 1018 3332 7112 TO AN EXISTING ELECTRICONLY with air pressure if available then pour a quart of WATER HEATER nontoxic antifreeze into the tank using a funnel and 20gal 18 255116 191116 3332 7112 Adding a heat exchanger to Raritan Water Heaters a length of hose Be sure electricity remains off to allow the water to be heated via the engine cooling until spring When in the spring run Heat Exchanger opening does not appear on NP series system is only possible on RSeries water heaters water long enough to insure that all antifreeze has R6 R12 R20 NPSeries NP6 NP12 NP20 do been flushed out BEFORE TURNING ON THE not have a threaded opening to accomodate the addi ELECTRICITY Optional heat exchangers are winter INSTALLATION o Water t tion of a heat exchanger We do not recommend ized in conjunction with the boats engine cooling Excess Temperature attempting the addition of a heat exchanger to system Service Lines Pressure Safety Valve RSeries water heaters manufactured prior to 1980 To Overboard as they utilize a metal plug that has been installed 115 Volts AC under high torque at the factory to eliminate possible Black to Power Line leaks Recent RSeries water heaters 1980 to date PROBLEM Water does n o t get hot Red Reset Button Electric Comes From Thermostat On utilize a special plastic plug that is installed only hand 1 No electric power to heater Be sure circuit breaker Engine Hottest Water tight at the factory The plastic plug is more readily or switch is turned on fuses are intact and wiring is Raw Water Cooling removed when converting to the heat exchanger not broken or disconnected Goes To Jacket On option Metal plugs installed before 1980 are virtu 2 Bad heating element Turn off power remove access Exhaust Manifold Riser ally impossible to remove after years of repeated cover and depress red RESET button Restore power Fresh Water Cooling Goes To Expansion Or heating and cooling If no warm water after 30 minutes check heating When ordering a replacement water heater we suggest element and thermostat the ESeries be ordered R6E R12E R20E These A Shut off power and diconnect the two wires units are shipped with a factory installed heat ex connected to the heating element Check for conti changer This allows the heater to be installed in the nuity through the heating element with an ohmmeter CAUTION Heater must be filled with water Before Power is turned on electriconly configuration with the heat exchanger If no continuity heating element is burned out available to be connected at a later date or it may be and must be replaced If continuity is indicatedHEAT EXCHANGER A GENERAL GUIDELINE TO SHOW HOW A POR installed in the dual configuration with no changes element is good check thermostat TION OF THE ENGINE COOLANT MAY BE Dl required later B Replacing the heating element Turn off powerThe Raritan Heat Exchanger is furnished with a male2 NPT thread to f i t the opening provided in the tank VERTED TO 3YIE OPTIONAL HEAT EXUlAN to heater then turn off water pressure pump andTwo NPT female threads are provided in the heat GER MAINTENANCE WINTERIZATION open all hot water faucets When water has for connection to hoses or piping from AND flowing pressure has been relieved drain waterengine coolant Because of the diversity of marine Little maintenance other than proper winterization is heater the rest of the way through drain valve ifcooling configurations it is not possible to provide required of the Raritan Water Heater Periodic visual installed or by removing cold water inlet hose oruniversal installation instructions the installer MUST inspection should be done to insure that connections pipe at bottom of tank between tank and checkfollow engine manufacturess THE are tight wires are not frayed and that grounding valve Remove access cover two wires connected t oFOLLOWING DIAGRAM IS INTENDED ONLY AS of the unit is sound These checks should be in heating element and four heating element mounting corporated into the annual commissioning and winter bolts Remove the heating element discarding the LEGEND layup of the boat as a minimum and should be done cylindrical rubber gasket Install the new element and 1 Hottest Water from Engine Full Flow more often if possible rubber gasket never reuse old gasket with the 2 PipeTee Full Flow on Run NPT on Branch A removeable magnesium anode is integral with the arrows on the heating element flange pointing up andMOTE Some marine engines run at higher 3 Hose to Hot Water Heat Exchanger hot water outlet fitting I t should not be necessary down Be sure to reconnect the ground wire than the range of the pressure 4 Gate Valve Sized to Permit Full Flow of Coolant to inspect or replace the anode unless discoloration nect the black and white wires to the new heatingrelief valve on the water heater For use with 5 Pipe Tee Full Flow on Run NPT on Branch unusual smell or taste develop in the water The element Close drain valve or reconnect plumbingthese engines an alternate location for source 6 Hose from Hot Water HeatExchanger to cold water inlet of water heater With hot waterwater will have to be selected See safety annode is replaceable as a unit and may be ordered 7 Full Flow Return to Engine Cooling System faucets open and ELECTRICITY TURNED OFF tovalve problems under from Raritan dealers or from the factory Specify 3 6 6 12 or 20 gallon model the water heater turn on water pressure pump Allow pump t o run a few minutes to expel air from the lines then shut off faucets Restore power Check WINTERIZATION for leaks around the heating element while waiting Before beginning winterization be sure electricity is for the water to heat If no leaks replace the cover turned off to the water heater The water heater is plate If a leak appears turn off power drain tankand check cylindrical gasket be sure it is seated is running the operating temperature of the may be in excess of the relief valves rating This will3 Bad thermostat If the ohmmeter shows conrinuity usually show up on the first major cruise or on athrough the heating element but the water is not heat shakedown cruise The situation described is possibleed a bad thermostat is indicated with certain fresh water cooled engines that oper A Turn off power t o heater depress red RESET ate at over 200 degrees F Engine coolant is normallybutton and turn thermostat to highest setting Dis tapped off just ahead of the coolint systems heatconnect both wires t o heating element Check for exchanger where the water is hottest then fed to thecontinuity with an ohmmeter through the thermostat heat exchanger in the water heater The cure is t ofrom black wire terminal t o black wire terminal and tap the coolant DOWNSTREAM of the heat exchangfrom white wire terminal to white wire terminal er where the coolant is a t a lower temperature CheckEach side must show continuity If continuity is not the temperature of the coolant piped to the on either side the thermostat must be re heater to be sure it is not over 170 degrees Fplaced If thermostat tests good after heating elementalso tested good recheck that power is available t o PROBLEM Constant dripping o f the relief valve reunit Check wiring for breaks etc gardless o f temperature B Replacing the thermostat Turn off power re This is usually caused by foreign matter lodged in themove access cover to expose thermostat terminals seat of the pressure relief valve Shut off fresh both sets of wires from the thermostat pressure pump shut off electricity and open hot waterSnap the thermostat out of i t s mounting and insert taps t o relieve pressure in the system Drain waternew one Reconnect both sets of wires to the thermo from tank until it is beneath the level of the reliefstat Wire the thermostat according to the Installation valve Remove the relief valve and clean it ignoring additional terminals that may be Open the actuating handle and flush the valve withon the new thermostat Fill heater with water then lukewarm water Be sure no sediment remains on theturn on electricity Water should be noticeably warm seat of the valve plunger Close valve and 30 minutes using tape dope or pipe joint compound Refill tankPROBLEM Safety valve opens and releases h o t water expel air from the lines then turn on electricity1 Take care to avoid scalding safety valve is preset Observe the relief valve as the tank fills and as theto open a t 210 degrees F Remove the access cover water heats I t should remain closed and not dripand check temperature setting on thermostat Facto If dripping begins again replace the valvery setting is 130140 degrees F If setting is higherturn it all the way t o the left Allow heater to operatean hour and observe results If lowering the temper ature setting doesnt cure the problem perform the If further help is required or if an unusual Shut off electricity to the heater and ob should develop contact Raritan Customer Service inserve if the water flow stops over the next few hours Millville NJ or Ft Lauderdale FI for assistance If the water flow doesnt stop as the tank cools down Any replacement part for a Raritan Water Heatersa defective pressure relief valve is apparent Unscrew ordered from Raritan dealers or direct from theand replace it after turning off the electricity and factory When ordering heating elements the tank If the water stops flowing as the whether 115 or 230 volt When ordering anodes ortemperature drops a defective thermostat is indicated sheet metal parts specify whether 6 12 or 20 gallon Replace the thermostat following by earlier directions unit Relief valves thermostats heating elements2 I f the heater is equipped with an optional heat ex gaskets and heat exchangers are and the relief valve opens while the engine between the three sizes SAVE THESE INSTRUCTIONS To order replacement parts or t o request additional in formation or assistance contact Raritan Customer Service at 530 Orange Street PO Box 1157 Millville NJ 08332 USA TAN mpany Inc Telephone 60918254900 TWX 5106877545 RARITAN M IVE Southern Office and Plant 3101 sw Second Avenue Fort Lauderdale FL 33315 USA Telephone subject t o change without notice Printed in USAHWHM187
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