400LP - Aqua-Hot Heating Systems, Inc.
Contents
1. Generally Recognized as Safe GRAS by the FDA For N WARNING DO NOT OPERATE APPLIANCE WITH ACCESS COVERS REMOVED _ additional information regarding this GRAS antifreeze Front Open Access Back 0 inches product please the Care amp Maintenance Section of this Top 0 inches Sides 0 inches guide contact the Aqua Hot Heating Systems Technical Install in strict compliance with local codes NFPA 1192 and the manufacturer s instructions Support Department at 1 800 685 4298 or visit the web IL Certified for use in a Recreational site at www aquahot com Vehicle ONLY Intertek Direct Vent Appliance 3069328 Maximum Tank Max Watts DC Watts AC Pressure 35 0 120 VAC 60 Hz Nozzle Size Angle Volts Volts 56 000 BTU 16 4 kWh 145 PSI 10 0 bar Input Firing Rate Pump Pressure wesastO II DIESEL Diesel Burner Diesel Burner Fuel Type Model Number Serial Number LI Model Number Serial Number ate 15549 East Highway 52 Fort Lupton CO 80621 1 800 685 4298 www aqua hot com Aqua Hot 400 LP Use amp Care Guide n 7 Aqua Hot System Features Cut Away Diagrams AC Terminal Block AC Terminal Port AC Wiring Port Access Cover Air Release Valve Propane Burner Propane Burner Controllers Propane Inlet Ball Valve Domestic Cold Water Inlet Domestic Hot Water Outlet Drain Valve Expansion Tank Connection Heating Zone 1 Outlet Port Heating Zone 2 Outlet Port Te2. damage to the heater Propylene glycol that is Generally Recognized as Safe by the FDA must be utilized for the antifreeze and water heat solution NOTE For additional information regarding this propylene glycol based boiler type antifreeze that has been Generally Recognized as Safe by the FDA please reference Appendix A contact Aqua Hot Heating Systems Technical Support Department at 1 800 685 4298 or visit the web site at www aquahot com Figure 3 Expansion Tank Cap 9 Fluid will reach Expansion Tank line when HOT HOT d DAqua Hot Aqua Hot 400 LP Use amp Care Guide p 12 Winterizing the Domestic Water Heating System The Aqua Hot s Domestic Water Heating System must be completely drained of domestic water at ANY time the heat er is stored where freezing temperatures may be experi enced Please follow these instructions when winterizing the NOTE The Aqua Hot can continue to be used for interior zone heating once the domestic water heating system has been drained and winterized Aqua Hot s Domestic Water Heating System reference Fig ure 4 1 Completely drain the fresh water storage tank 2 Disconnect the domestic water demand pump s suction line from the fresh water storage tank 3 Attach an adequate piece of hose onto the suction side of the domestic water demand pump 4 Place the opposite end of the hose into an adequate supply of FDA approved GR
3. home If you are unable to locate the switch panel contact your dealer to guide you in the location and operation of all switch operations Once you have located the interior switch panel turn the burner switch ON This action will activate the burner and the indicator light located adjacent to the burner switch Allow 10 20 minutes for the Aqua Hot system to reach operating temperature Please note that the burner is the primary heat source for heating the interior and hot water To operate the electric heating element turn the electric switch ON This action will activate the 12 Volt AC electric heating element and the indicator light located adjacent to the electric switch Allow 1 2 hours for the Aqua Hot system to reach operating temperature Be sure to activate the electric element switch for maximum water capacity Figure 1 is an example of an interior switch panel Figure 1 Aqua Hot 800 685 4298 Aqua Hot 400 LP Use amp Care Guide p 10 Operating Instructions Aqua Hot Operational Flowchart Heat source is selected from the Interior Switch Panel Burner is activated by the Electric Heating Element is Burner switch activated by the Electric switch The Boiler Tank heats the antifreeze and water heat ing solution to 190 F Heating Zone Thermostat calls for heat A hot water faucet e g kitchen sink shower etc is opened The heated antifreeze and water heating solutio
4. HEATING SYSTEMS INC 400 LP
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6. SYSTEM Aqua Hot Heating Systems Inc warrants the Aqua Hot Heater to be free from defects in material and workmanship under normal use and service for a period of two years on both parts and labor commencing upon the original date of registration of the vehicle Replacement parts are warranted for the remainder of the Heater s standard warranty coverage or for six months whichever is greater The intent of this warranty is to protect the Heater s end user from such defects which would occur in the manufacturing of the product Thus problems due to improper specifications improper installations improper use the use of accessory parts or parts not authorized by Aqua Hot Heating Systems Inc repair by unauthorized persons and damage or abuse of the Heater are specially excluded from warranty coverage For additional information or to obtain a warranty repair authorization please contact the Aqua Hot Heating Systems Warranty Administrator at 1 800 685 4298 8 00 AM to 5 00 PM Mountain Standard Time or visit www aquahot com My Comfort Zones are On Board Vehicle Purchased From Dealer Information Name Location Phone Number Heating System Serial Number SS Aqua Hot HEATING SYSTEMS INC 7501 Miller Drive Frederick CO 80504 Visit us on line at www aquahot com Call us at 800 685 4298 or 303 651 5500 2013 Aqua Hot Heating Systems Inc Printed In U S A LTE 400 000 Rev A SERIES SS Aqua Hot
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8. 98 or 303 651 5500 Warranty work must be performed by an Aqua Hot Factory Authorized Service Center IMPORTANT NOTE Your on product identity label contains specifications of your unit Factory set tings may be adjusted by your RV manufacturer confirm final setting with your dealer WARNING fthe information in this guide is not followed exactly a fire or explosion may result causing property damage or personal injury Aqua Hot 400 LP Use amp Care Guide Journey in Comfort R Aqua Hot gt ke COMFORT ZONES OM RAM Comfort Zone 1 Comfortable Cabin Heat Get heat where you want it when you want it The Aqua Hot system heats by zones Therefore your bedroom living room and bathroom can be custom temperatures Don t hesitate to crank up the heat because the Aqua Hot system doesn t remove moisture from the air From now on you will have to blame the dry skin and itchy eyes on Mother Nature Comfort Zone 2 Quiet Operation Say goodbye to rude awakenings from the forced air furnace you re an Aqua Hot owner now The Aqua Hot is quiet when op erating so you ll never have to turn up the TV yell across the room or have an interrupted night of sleep again due to your heating system Comfort Zone 3 Continuous On Demand Hot Water Take long guilt free showers knowing there is no recovery time for the next shower or load of laundry The freedom to take a shower when you want
9. AS RV antifreeze and allow this to pump through 5 Open and close all interior and exterior water faucets one ata time until ONLY pure RV antifreeze is present Perform this procedure for both hot and cold faucets 6 Remove the hose and reconnect the domestic water demand pump s suction line to the fresh water storage tank Fresh Water Storage Tank Figure 4 Domestic Hot Water OUTLET Domestic Cold Water Winterization 4a WARNING Not winterizing the Aqua Hot when freezing temperature are present will result in SERIOUS damage to the Aqua Hot s Domestic Water Heating System Also be sure to use the FDA approved GRAS rated antifreeze for winteriza tion De Winterization To de winterize the Aqua Hot system completely fill the fresh water storage tank Open and close the interior and exterior faucets one at a time until only clear water is pre sent Disinfecting the Domestic Water System Aqua Hot systems contain copper tubing and are not com patible to prolonged exposure to sodium hypochlorite bleach or liquid bleach Using products containing bleach including water refreshers may cause corrosion of the domestic water coil resulting in a catastrophic failure of the Aqua Hot system by creating leaks that cannot be repaired This damage is not covered by the Aqua Hot war ranty If disinfecting the hot water heating system be sure to follow NFPA 1192 Standard on Recreational V
10. Expansion Tank to release air pockets reference page 6 part 5 and 12 Hold the valve open until all the air is released If necessary refill the Expansion Tank again Be sure the valve is closed when finished by hand tightening Reference Appendix A through C in order to determine the correct ratio antifreeze to water the proper type of anti freeze and the water quality recommendations for the Aqua Hot Hydronic Heating System s antifreeze and water heat ing solution Reference Appendix D for the proper tool and instructions for usage in measuring the system s antifreeze mixture ratio Annual Maintenance No annual maintenance is required above the normal monthly maintenance Reference the Aqua Hot s Service and Parts manual for spare parts information and detailed replacement instructions Contact the Aqua Hot Heating Systems Technical Support Department at 1 800 685 4298 for assistance Otherwise locate the nearest Aqua Hot Ser vice Center or visit the web site at www aquahot com Ah DANGER When the Aqua Hot is at maximum operating temperature the coolant will be very HOT If the Aqua Hot s heating sys tem is accessed scalding by hot vapor or coolant could result Before cleaning or servicing disconnect all power supplies 4a WARNING DO NOT operate the Burner and or the Electric Heating Element without the antifreeze and water heating solution in the Aqua Hot s Boiler Tank Doing so will cause serious
11. F The following information should be utilized for the pur pose of clarifying some terms commonly associated with antifreeze Freeze Point and Burst Point Antifreeze solution lowers the freezing point of any liquid to which it has been added by preventing the formation of crystals However as the ambient temperature continues to decline the water in the solution will attempt to attain a solid state The point in which the water begins to solidify is termed by the freeze point Although the water in the solu tion has begun to freeze producing a slushy consistency the antifreeze in the solution will continue to combat the Aqua Hot 400 LP Use amp Care Guide p 14 Appendix C Continued Appendix C Antifreeze Terms and Mixture Ratio normal expansion of the solution as it freezes The point in which the solution can begin to expand due to colder tem peratures is called the Burst Point Once the solution reaches the burst point the potential is present for ruptured pipes to exist The burst point of the antifreeze and the wa ter heating solution is dependent upon the brand of propyl ene glycol antifreeze employed Boiling Point The Aqua Hot utilizes the propylene glycol based PPG antifreeze and water heating solution as a transportation means for the heat produced from the internal processes The PPG antifreeze solution absorbs the heat created until its boiling point is reached It is at this po
12. Interior Heating System provides quiet comfortable interior heat with independent temperature zones that provide cabin wide even temperatures 2 Bay Heating System keeps pipes and tanks from freez ing in the bay storage area 3 Tank less Hot Water System provides a steady flow of continuous hot water The Aqua Hot System is powered by TribridHot technology and uses one or a combination of the following sources 1 The 120 Volt AC Electric Element When plugged into shore power the electric element lets you use the pow A l er you are already paying for to provide heat and meet 0 U a ot your light duty hot water needs HYDRONIC HEATING SYSTEM 2 The Burner This is the Aqua Hot s most powerful heat gd e co or source and provides all of heating and hot water needs banenth the vahide er undar an eponadio window or in cold temperatures or dry camping Combustion Air MUST BE supplied from outside the vehicle J N CAUTION THIS APPLIANCE OPERATES ON BOTH AC AND DC POWER USE COPPER CONDUCTORS ONLY NOTE This Aqua Hot product utilizes a propylene glycol Use a 20 Amp fuse for over current protection for the DC power supply Use a circult breaker that cuts power at 20 Amps maximum for over current protection for the based antifreeze and water heating solution This propylene 120 VAC power supply e S 1 S M he H l door so that the Ac Cover be it edf glycol based solution is a boiler type antifreeze that is A ed
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14. USE amp CARE GUIDE 400 SS Aqua Hot e HEATING SYSTEMS INC 400 LP Journey in Comfort Thank you for equipping your RV with an Aqua Hot hydronic heating system We value your business and are grateful for the trust you have placed with Aqua Hot Heating Systems Inc Our customers are top priority and we are committed to providing best in class products service and support We understand how important comfort is to you as a motor home owner there fore we have designed a heating system to significantly improve all of your comfort levels while on the road Additionally the Aqua Hot hydronic heating system is a low emission fuel efficient system that adds thousands of dollars to your motor home We know you must be eager to get underway but take time to read the entire Use amp Care Guide and understand your Aqua Hot unit This guide should be main tained in legible condition and kept in a safe accessible location for future review Should you have any suggestions how we can better serve you please do not hesitate to contact us at 800 685 4298 or 303 651 5500 The Aqua Hot hydronic heating system is protected by the finest warranty in the industry read it on page 19 IMPORTANT NOTE A qualified installer or service technician must perform equipment installation or service Contact Aqua Hot for Factory Authorized Service Centers or Certified Technicians located near you www aquahot com service help 800 685 42
15. Volt DC power to the Aqua Hot if the vehicle requires welding At maximum operating temperatures the coolant will be very hot and scalding hot vapor or coolant may re sult in serious burns or injury DO NOT activate the burner until the antifreeze and water heating solution has been added to the boiler tank to avoid serious damage to the heater Do not start the vehicle s engine or electric generator Contact the nearest gas supplier or qualified service technician for repairs If you cannot reach a gas supplier or qualified service technician contact the nearest fire department Do not turn on the gas supply until the gas leak s has been repaired Installation and service must be performed by a quali fied installer service agency or gas supplier Aqua Hot 400 LP Use amp Care Guide 4 Safety Instruction amp Precautions gue e 440 uonsod Sg 7 syoup ej ssaa nee ayneyo np euedoid ep nu p pod oa uns 15 zeB np ep uonoq a ZoWINOL seq send at abebar sno Smnaugut seisouusin Sat sno z jf y ua p nu 1 p9904d ouedde ep nbu y j uopeju wje z dnoJ MWaAuVddV 1 uonsod 220 84 0 kK SIMYDO 9 pod out euedod e 1o1gau au UO pajesoj qouy Jjonuoo 586 y uny 86Zt S89 008 Ne anbiuyse u nnos ap Jmu s ai z j dde no eyejyoudosd np j nuew np eBeu uedeg uonoss ej 19 8019 51185 NS
16. de the best performance combination of the aforementioned functions If excess propylene glycol exists within an anti freeze and water heating solution the water s heat absorp tion properties are compromised This could ultimately in hibit the Aqua Hot from providing adequate domestic hot water and interior heating Additionally if the antifreeze and water heating solution contains over 70 propylene glycol the freezing point is actually raised resulting in less freeze protection Please reference the attached graphical representation regarding the percentage of antifreeze to water and how it directly affects the solution s freezing point Propylene Glycol Based Antifreeze Protection tt Poe Note The freering points are the temperatures et whech the fest ice crystels form Ewen below These temperatures shuthy solution git which may Percentage of Propytene Gier cd by weight in the Antifreeze Solution Aqua Hot 400 LP Use amp Care Guide p 15 Appendix D Measuring Propylene Glycol Using a Refractometer Calibrate the Refractometer Aqua Hot Part Number MSX 907 162 Calibration Screw Daylight Plate Assembly Main Prism Assembly Upper Blue Field As seen when looking into Letz the instrument S E es Boundary Line Ex SS Lower White Field Adjust to 32 F Aqua Hot 400 LP Use amp Care Guide p 16 General Information Should the Aqua Hot Hydronic Heating System fail to
17. ehicles Instructions for Disinfection of Potable Water Systems These instruc tions can be found by visiting the National Fire Protection Association online at www nfpa org Arrows indicate directional flow of domestic water To Cold Water Faucets AT Indicates options for mounting an Accumulator Tank INLET To Hot Water Faucets Aqua Hot 400 LP Use amp Care Guide 13 Appendix A Antifreeze Types The following information addresses the necessary us age of propylene glycol based boiler type antifreeze in the Aqua Hot Propylene glycol is a safer alternative to the more toxic ethylene glycol antifreeze however as mandated by IAPMO International Association Plumbing and Mechanical Officials only propylene glycol based boiler type antifreez es deemed Generally Recognized as Safe GRAS by the FDA should be utilized Due to the significant impact of various types of anti freeze on a hydronic heating system including the level of safety provided it has been recognized that there is a need to provide an explanation regarding two additional promi nent types of antifreeze coolant available The following information should be utilized as an educational means of ensuring that the proper type of propylene glycol based anti freeze is selected RV amp Marine Antifreeze These types of propylene glycol based antifreeze prod ucts are formulated specifically for wi
18. elow 40 F to prevent freezing of the domestic water storage system Please contact the specific motor home dealer for exact location of thermostat controls Interior Heating Operation Heating Operation Overview The heating features are powered by a 12 Volt DC pro pane burner and a 120 Volt AC electric heating element These two heating elements maintain the temperature of the Aqua Hot s antifreeze and water heating solution to pro vide hot water and heat to the motor home Propane Burner The propane burner is the Aqua Hot s primary and most powerful heat source and provides all of the heating and hot water needs when cold tem peratures exist and or when there is a high demand for hot water It can be activated by turning the burner switch in the ON position Reference Figure 1 on follow ing page Electric The electric element is the Aqua Hot s second ary heat source and can be used when plugged into shore power The electric element provides heat when moderate temperatures exist 50 F or higher and or when there is a low demand for hot water It can be activated by turning the electric switch in the ON posi tion Reference Figure 1 on following page Controlling Heat Levels The interior room thermostat can be adjusted at the desired temperature and will automatically be activated to maintain the temperature of the interior Keep in mind that the diesel and or electric element switch on the interior switc
19. er and or electric element switch is in the ON position Tempering Valve The Tempering Valve for the Aqua Hot mixes the heated domestic water from the boiler tank with cold domestic wa ter at the present ratio to reduce the risk of scalding This valve is located in the back of the Aqua Hot unit Reference page 6 part 15 Locate the pink paint witness mark to verify that the Aq ua Hot is set at the correct factory setting and did not get tampered with during shipping or installation Verify that the Tempering Valve is set at the proper tem perature by using a digital thermometer at one of the hot water faucets The water temperature should range be tween 115 F to 123 F If the correct temperature cannot be set follow the instructions to replace the Tempering Valve in Section 5 of the Service Manual Figure 2 amp Aqua Hot Heating Status e Engine Prohoat Pump k Pump E SC Pump 3 Low Batte gt H Voltage Fau H Diesel Burner L ow Temp Cutoff Status Overload Fault ELECTRONIC CONTROLLER Aqua Hot 400 LP Use amp Care Guide p 18 DATE Owner s Service Log SERVICE PERFORMED SERVICE CENTER Aqua Hot 400 LP Use amp Care Guide D DATE Owner s Service Log SERVICE PERFORMED SERVICE CENTER Aqua Hot 400 LP Use amp Care Guide D Warranty SS Aqua Hot HEATING SYSTEMS INC 2 YEAR LIMITED WARRANTY AQUA HOT HYDRONIC HEATING
20. h panel must be in the ON position for the heat to op erate Control Balancing Heating Zones Set the interior room thermostat for each independent heating zone at the desired temperature This feature al lows you to customize various temperatures on each heat ing zone throughout your motor home Aqua Hot 400 LP Use amp Care Guide p 9 Hot Water Operation Using the Water Heating System General Information The Aqua Hot system is known as an on demand hot water heating system because hot water is not stored within the motor home Instead when the burner and or electric element switch is ON and the Aqua Hot is at operating tem perature the water is automatically heated as it is being used Therefore simply open an hot water faucet once sys tem is up to operating temperature and a continuous sup ply of hot water will be present within a few seconds NOTICE Do not operate the burner and or electric element without the antifreeze and water heating solution in the Aqua Hot s boiler tank Failure to do so will cause serious damage to the heater 4 WARNING The Aqua Hot s exhaust is HOT Do NOT park is areas where dry conditions exist i e grassy dry fields Do NOT operate the burner inside an enclosed building The heater must be switched OFF when refueling Operation Instructions To operate the Aqua Hot hot water system you will need to locate the interior switch panel located inside your motor
21. ins specifications of the unit to what standard it has been tested and im portant safety notices The Aqua Hot must be installed in a compartment that is closed off from living quarters and accessible only from outdoors Propylene glycol based antifreeze Generally Recog nized as Safe by the FDA must be utilized for anti freeze and water heating solution An interlock switch prevents the Aqua Hot heater from operating when the cover is not installed in the correct position Should any additional assistance be needed please contact the Product Application Department at 800 685 4298 or 303 651 5500 A WARNING If this information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable va pors and liquids in the vicinity of this or any other ap pliance WHAT TO DO IF YOU SMELL GAS Evacuate all persons from the vehicle e Shut off the gas supply at the gas container or source Do not touch any electrical switch or use any phone or radio in the vehicle fore welding or plasma cutting the coach to avoid dam age to equipment Air pressure to the tank must not exceed 20 PSI or will cause internal damage The Aqua Hot s exhaust is HOT and must be kept away from heat sensitive material Use caution when working on or near the propane gas system DO NOT connect the 12
22. int when the liquid turns to a gas and is expelled to prevent the heating system from overheating Each time the boiling point is reached a loss of efficiency occurs because the heat produced is ex pelled rather than utilized for the function of the heating system Therefore a higher boiling point is desired in order to combat the loss of efficiency which allows the antifreeze to transport the heat created from the internal process throughout the motorhome where it can be utilized produc tively rather than dissipating due to its change from a liquid to a gas Rust and Anti Corrosive Inhibitors Another major function of anti e freeze solution is to provide protecting to the internal metal components of the Aqua Hot hydronic heating system from corrosion and rust Antifreeze is 1 able to perform this function by the addition of rust and anti corrosive inhibitors which are designed specifi cally to activate in a water solution Tempersture F Summary Antifreeze solution has three basic functions 1 Freeze Protection 2 Boil over Protection 3 Anti Corrosion and Rust Protection PPG Antifreeze solution is also primarily responsible for heat transfer however propylene glycol itself does not pos ses acceptable heat transfer characteristics Therefore wa ter is added to the mixture because it is an excellent heat conductor PPG antifreeze solution mixed with water that is 35 to 50 propylene glycol is recommended to provi
23. makes your RV experience feel much more like home Comfort Zone 4 Low Emissions Aqua Hot s new low emission systems are fumeless and odorless It s good for you good for your neighbor and good for the environment EMISSIONS Comfort Zone 5 Over 160 Factory Trained Service Centers You won t need to service your Aqua Hot often but when you do you can be confident in our Certified Service Centers that are close by and trained to assist you with all of your Aqua Hot specific needs Comfort Zone 6 Adds Value The NADA Recreational Vehicle Guide lists Aqua Hot as adding thousands of dollars to the value of an RV That value will pay off when it s time to trade up or sell Comfort Zone 7 Low Fuel Costs There s no need to burn propane each time heat or hot water is needed Aqua Hot s TribridHot technology powers the Aqua Hot system by pulling heat from one or a combination of heat sources When shore power is available simply plug it in When dry camping or in very cold conditions use the Diesel Burner Aqua Hot 400 LP Use amp Care Guide 3 Safety Instructions amp Precautions The Unit IMPORTANT NOTE Read all instructions before installing CAUTION this appliance e Disconnect electric wiring to the Aqua Hot System be Read this Installation Manual before installing or using the Aqua Hot System to reduce the risk of injury to per sons or damage to equipment e The product identity label conta
24. mpering Valve VAC Access Panel Wiring and Harness Port Zone 1 Circulation Pump Zone 1 Inlet Port Zone 2 Circulation Pump Zone 2 Inlet Port e EE DRP 4 WARNING The Aqua Hot tank and heating loop operate at 0 0 psi zero pressure system Air pressure applied to the tank MUST NOT exceed 20 psi Excess pressure will result in internal damage Aqua Hot 400 LP Use amp Care Guide p 8 Aqua Hot Heating System Features Controls Overview Do not operate the diesel burner and or electric element without the antifreeze and water heating solution in the Aqua Hot s boiler tank Failure to do so will cause serious damage to the heater Switches The Aqua Hot heating system is controlled by two switch es the burner switch and the electric element switch When one or both the burner or electric element switches are in the ON position it will supply the necessary heat to the boil er tank Keep in mind that the Aqua Hot must be at operat ing temperature for the heating zones and hot water to function properly Please contact the specific motorhome dealer for the exact location of switch operations Thermostats The interior room thermostat can be set at the desired temperature therefore whenever the interior of the room calls for heat the Aqua Hot s circulation pump and interi or heat exchanger fans will be activated The fresh water thermostat controls the bay heating area and should NOT be set b
25. n flows through the Hydronic Heat ing System transferring heat to the heat exchanger which is then transferred to the surrounding zone Continuous hot water is supplied to the faucet The cooled antifreeze and water heating solution is returned to the boiler tank to be reheated Aqua Hot 400 LP Use amp Care Guide p 11 Maintenance Maintenance Schedule Monthly Maintenance Check the Aqua Hot s antifreeze and water heating solu tion to ensure that it is at the proper level This can be ac complished by visually checking the coolant level in the Aq ua Hot s Expansion Tank reference Figure 3 Please note that the coolant level should be checked ONLY when the Aqua Hot is at maximum operating tempera ture This should be done IMMEDIATELY after the Burner cycles OFF At maximum operating temperature the antifreeze and water heating solution should be at the level marked HOT on the Expansion Tank Run the interior heating zones until you feel warm air blowing out the heat exchangers This will prevent the zone check valves from failing prematurely Run the Burner once a month This will ensure proper operation of the Burner Replenishing the Antifreeze and Water Heating Solution If the antifreeze and water heating solution needs re plenishing remove the Expansion Tank s cap and fill the Expansion Tank to the HOT level mark When refilling open the Air Release Valve located on the
26. nterizing application ONLY Although RV amp Marine antifreeze is often Generally Recognized as Safe by the FDA it should never be used in the Aqua Hot s Hydronic Heating System This typed of anti freeze is not formulated to transfer heat which is essential to the heating system s functionality and does not contain rust inhibitors Please note the RV amp Marine antifreeze can be utilized to winterize the Aqua Hot s Domestic Hot Water Heating System Automotive Antifreeze Coolant These types of propylene glycol based antifreeze prod ucts are formulated specifically to protect automotive en gines against corrosion freezing temperatures and over heating They also have excellent heat transfer and thermal conductivity characteristic Although these types of anti freeze products are considered less toxic and safer than ethylene glycol for people pets and the environment they are not Generally Recognized as Safe GRAS rated by the FDA Therefore they must be marked with a harmful if swallowed warning This additional warning is required be cause these types of antifreeze products contain high levels of chemical rust inhibitors Due to their potentially hazard properties they should never be used in Aqua Hot s Hydron ic Heating System Appendices A B and C Appendix B Antifreeze Mixture Water Quality Recommendations In order to ensure maximum performance and longevity of an Aqua Hot heating s
27. oad condition e short has occurred in a particular heating zone 5 circuitry NOTE The Low Temp Cutoff Light must be illuminated and the heater must be up to operating temperature for the heating zone status indicator lights to illuminate red or green Pumps 1 2 and 3 Indicator Lights These indicator lights Separately will illuminate GREEN whenever a circulation pump is operating If any of the three indicator lights illuminate RED it indicates that an electrical overload condition Le short has occurred in the particular component s circuitry NOTE Zone circulation pumps 1 and 2 are activated whenever a zone thermostat calls for heat The 3 boiler tank stir pump is activated whenever the domestic water is being used on a continuous basis or the heater is not up to operating temperature Electric Heating Element Status Indicator Light This indicator light will illuminate GREEN whenever the Aqua Hot s electric heating element is operating and providing heat to the Aqua Hot s boiler tank Please note that this light will only be active if the elec tric element switch is ON If this indicator light illuminates RED it indicates an electrical overload condition i e short has occurred in the electric heating element s 12 Volt DC Troubleshooting NOTE The Aqua Hot s VDC VAC Control Thermostat will automatically activate the Burner and or the electric heat ing element ONLY if the Burn
28. on Notes As you read this Information take particular note of the NOTICE CAUTION WARNING and DANGER symbols when they appear This infor mation is important for safe and efficient use of the Aqua Hot equipment NOTICE NOTICE signals a situation where potential dam age to the equipment could occur AA CAUTION CAUTION signals a situation where potential harm or risk of minor or moderate injury could occur if you do not follow instructions A WARNING WARNING signals a hazardous situation where potential harm risk of serious injury or death could result if you do not follow instructions AA DANGER DANGER signals a situation where immediate risk of serious injury or death will result if you do not follow instructions NOTE In addition this manual may indicate an IMPORTANT NOTE that highlights information that is especially important Aqua Hot 400 LP Use amp Care Guide p Aqua Hot System Features 400 LP Features The product label attached to the Aqua Hot provides a ready reference to specifications test standards and important safety notices The Aqua Hot Heating System is a Low Emissions Hy dronic Heating System heating with hot water that signifi cantly improves your level of comfort decreases harmful emissions released into the atmosphere and adds thou sands of dollars in value to your RV The Aqua Hot Heating System is three systems in one 1
29. operate complete the following checks 1 Verify that the Aqua Hot s access cover is securely in Stalled Reference page 6 part 4 The Aqua Hot Hy dronic Heating System will not operate if the access cover is not fully installed 2 Ensure that the vehicle s fuel tank contains a sufficient level of fuel The Aqua Hot system will not operate if the fuel level is at or below 1 4 tank 3 Ensure that the Aqua Hot s boiler tank has an ade quate supply of antifreeze and water heating solution by checking the level at the Expansion Tank If the level is low reference the Maintenance section of this guide for refilling instructions 4 Check the Aqua Hot s electronic controller for any RED lights indicating a fault condition If the Aqua Hot Heating System s failure to operate is not resolved with the aforementioned checks please con tact the Aqua Hot Heating Systems Technical Support De partment at 1 800 685 4298 for additional assistance or visit the web site at www aquahot com If the Aqua Hot s Burner switch Indicator Light does not illuminate and the Burner is not functioning locate the electronic controller and check the following 1 Check the Aqua Hot s electronic controller for any RED lights indicating a fault condition Reference Figure 2 2 Check for loose wire connections on the electric con troller s terminal strips plugs When checking for loose terminal strips plugs remove the electronic cont
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31. roller faceplate by unscrewing the four cover screws 3 Remove the Aqua Hot s access cover and check for loose plug connections on the Burner controller unit Reference page 6 part 7 NOTE An interlock switch prevents the Aqua Hot from op erating when the cover is not installed and properly in place 4 Ensure the vehicle s fuel tank has a sufficient level of fuel 5 If the Aqua Hot still fails to operate please contact the Aqua Hot Heating Systems Technical Support Depart ment at 1 800 685 4298 or visit the web site at www aquahot com Troubleshooting Electronic Controller Diagnosis Low Tank Level Cutoff Indicator Light This indicator light will illuminate RED when either the 120 Volt AC electric heating element and or Burner have automatically shut down due to low antifreeze and water heating solution level inside the Aqua Hot s boiler tank This fault will automatically reset when the low level condition is corrected Low Battery Voltage Fault Indicator Light This indicator light will illuminate RED and the Burner will shut down whenever the 12 Volt DC voltage level is too low for the Aqua Hot to operate properly This fault must be manually reset after the voltage level has been restored to the 12 Volt DC battery system Reference Low Voltage Fault Indicator Light and Reset Button information below Low Voltage Fault Indicator Light and Reset Button The Aqua Hot s electronic controller mus
32. t be manually reset whenever the low battery voltage fault indicator light has been activated The electric controller can be reset by turning OFF the Burner switch on the interior switch panel for approximately 60 seconds then turning the switch back ON by pressing the Low Voltage Reset button located on the electric con troller use a thin straight non metallic object to access the reset button through the small hole on the faceplate Overload Fault Indicator Light This indicator light will illuminate RED whenever one of the following conditions have occurred 1 The Aqua Hot is off due to an electrical overload i e Short in the main 12 Volt DC power supply circuitry 2 The Aqua Hot is off due to a combination of high electri cal 12 Volt DC power loads and a high surface tempera ture of the electronic controller The Aqua Hot will automatically restart once the elec toral overload i e short and or high heat condition is cor rected Aqua Hot 400 LP Use amp Care Guide p 17 Heating Zones Status Indicator Lights These five indicator lights Separately will illuminate GREEN whenever a zone thermostat for each particular zone is calling for heat The GREEN indicator lights also indicate that 12 Volt DC power is being supplied to the par ticular interior heating zone s heat exchangers i e fan motors If any of the five indicator lights illuminate RED it indi cates that an electrical overl
33. ystem s boiler tank and associated components it has been determined that there is a need to use distilled de ionized or soft water in combination with concentrated propylene glycol for the Aqua Hot s anti freeze and water heating solution Please not that this is only nec essary when mixing concentrated propylene glycol anti freeze with water suppliers of pre mixed antifreeze are re sponsible for the use of high quality distilled de ionized or soft water when preparing their antifreeze for sale Hard water posses a high level of calcium and magnesi um ions which deplete the propylene glycol antifreeze s corrosion inhibitors This causes the antifreeze and water heating solution to begin turning acidic which can corrode the Aqua Hot s Boiler tank and associated components prematurely Therefore concentrated propylene glycol should be diluted with distilled de ionized or soft water which is 80 ppm or less in total hardness The local water agency should have up to date water quality reports which should indicate if the local tap water is within this guideline Appendix C Antifreeze Terms and Mixture Ratio The following information addresses the process of se lecting a propylene glycol based antifreeze solution that provides adequate freeze boiling and rust anticorrosive protection A 50 50 mixture ration is recommended which will result in a freeze point of approximately 28 F anda boil point of approximately 222
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