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© 2011  Aqua-Hot

®

  450-D Hydronic Heating System Owner’s Manual 

O

PERATING

 I

NSTRUCTIONS

 

DO NOT

 operate the Diesel-Burner and/or Electric Heat-

ing Element without the antifreeze and water heating so-
lution in the Aqua-Hot’s Boiler Tank. Failure to do so will 
cause serious damage to the Heater. 

Activating the Aqua-Hot Heating System:

 

 

Diesel-Burner: 
 

Turn the Burner switch 

ON

; reference Figure 5.  This pro-

cedure will activate the Diesel-Burner and the indicator 
light located adjacent to the Diesel-Burner switch.  Allow 
10-20 minutes for the Aqua-Hot System to reach operat-
ing temperature.  Please note that the Diesel-Burner is 
the 

primary heat source 

for heating both the interior and 

the domestic hot water (such as when cool ambient tem-
peratures exist and/or when there is a high demand for 
domestic hot water). 
 

Electric Heating Element:

 

 
Turn the Electric switch 

ON

; reference Figure 5.  This pro-

cedure will activate the 120 Volt-AC Electric Heating Ele-
ment and the indicator light located adjacent to the Elec-
tric  switch.  Allow 1-2 hours for the Aqua-Hot System to 
reach operating temperature. 
 

Engine Preheat Element: 
 

In order to use the Engine Preheat element on the Aqua-
Hot system, both the Diesel-Burner AND the Engine Pre-
heat switch must be turned 

ON

; reference figure 5. Allow 

the Engine Preheat element to function for one hour be-
fore starting the vehicle’s engine.

 

The Aqua-Hot’s Exhaust is HOT! 
 
DO NOT park in areas where dry conditions exist un-
derneath the vehicle as a fire may result (i.e., in a dry, 
grassy field)! 
 
DO NOT operate the Aqua-Hot’s Diesel-Burner inside 
an enclosed building! 
 
The Heater must be switched OFF
 when refueling. 

WA R N I N G !  

CAU T I O N :  

Figure 5 

Indicator 

Light 

Summary of Contents for 450 D

Page 1: ...OWNERS MANUAL 2011 Aqua Hot Heating Systems Inc 450 D ...

Page 2: ... Page 2 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual ...

Page 3: ...es 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 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 an...

Page 4: ...winterize the Aqua Hot when freezing temperatures are present if the Aqua Hot is turned off This includes when the coach is being used and the electrical element and diesel burner switch are in the off position or when the coach is in stor age Not winterizing the Aqua Hot when the aforementioned conditions are present will result in serious damage to the Aqua Hot s Domestic Water Heating System re...

Page 5: ...tifreeze and Water Heating Solution Page 12 Annual Maintenance Page 12 Winterization Winterizing the Domestic Water Heating System Page 13 De Winterizing the Domestic Water Heating System Page 13 Troubleshooting General Information Page 14 Diesel Burner Blinking Fault Indicator light Page 14 Appendices Appendix A Antifreeze Types Page 16 Appendix B Antifreeze Mixture Water Quality Recommendations ...

Page 6: ... Burner The Aqua Hot s most powerful heat source provides all of your heating and hot wa ter needs in really cold temperatures or when dry camping You can even combine power sources TribridHot It s technology at it s warmest This manual should be maintained in legible condi tion and kept in a safe easily accessible location for future reference Please read the complete Owner s Manual prior to oper...

Page 7: ...Port Product I D Label Zone 1 Circulation Pump Zone 2 Circulation Pump Drain Valve Interlock Switch Diesel Burner Diesel Burner Controller Back of Unit Figure 2 Domestic Hot Water Outlet Engine Preheat Inlet From Engine Engine Preheat Circulation Pump Engine Preheat Outlet To Engine Domestic Cold Water Intlet ...

Page 8: ...Zone Return Ports Product I D Label Air Release Valve Expansion Tank Wiring Harness Port Diesel Fuel Inlet Outlet Ports Heating Zone Outlet Ports AC Wiring Port Heating Zone 1 Outlet Port Heating Zone 2 Outlet Port AC Junction Box Wire Harness Harness Port Zone 1 Circulation Pump Zone 2 Circulation Pump Interlock Switch ...

Page 9: ...eratures exist and or when there is a high demand for domestic hot water Electric Heating Element Turn the Electric switch ON reference Figure 5 This pro cedure will activate the 120 Volt AC Electric Heating Ele ment and the indicator light located adjacent to the Elec tric switch Allow 1 2 hours for the Aqua Hot System to reach operating temperature Engine Preheat Element In order to use the Engi...

Page 10: ...up ply of domestic hot water will be present within a few seconds This hot water feature is continuous and is accomplished by the Aqua Hot s Domestic Water Heat ing System The Diesel Burner switch on the Interior Switch Panel must be ON in order to obtain a continu ous supply of hot water e g during showers be sure to also activate the Electric Element switch for maxi mum hot water capacity Refere...

Page 11: ...at calls for heat The heated antifreeze and water heating solution flows through the Hydronic Heat ing System transferring heat to the heat exchanger which is then transferred to the surrounding zone A hot water faucet e g kitchen sink shower etc is opened Continuous hot water is supplied to the faucet Engine Preheat switch on the Interior Switch Panel is activated The engine s coolant is circulat...

Page 12: ...enance To keep the Aqua Hot running smoothly it is ideal to have the Diesel Burner tuned up annually A tune up should consist of a new Fuel Nozzle and Fuel Filter ref erence Figure 9 To ensure maximum Diesel Burner per formance always use the recommended Fuel Nozzle and Fuel Filter when replacing these parts Reference the Aqua Hot s Service and Parts Manual for spare parts in formation and detaile...

Page 13: ...fill the fresh water stor age tank Open and close all interior and exterior water faucets one at a time until only clear water is present visible Reference Figure 10 If disinfecting the potable water system after de winterizing be sure to follow RVIA s Instructions for Disinfection of Potable Water Systems on Recreation Vehicles These instructions can be obtained by con tacting the Recreational Ve...

Page 14: ... 3 Remove the Aqua Hot s access cover and check for loose plug connections on the diesel burner control ler unit Reference figure 2 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 Department at 1 800 685 4298 or visit the web site at www aquahot com TROUBLESHOOTING Electronic Cont...

Page 15: ...e Preheat Pump Indicator Light This indicator light will illuminate GREEN whenever the engine preheat circulation pump is operating Please note that this light will only be active if the engine pre heat switch is ON in conjunction with either the diesel burner and or the electric element switch If this indicator light illuminates RED it indicates an electrical overload condition i e short has occu...

Page 16: ...onents prematurely Therefore con centrated propylene glycol should be diluted with dis tilled 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 A ANTIFREEZE TYPES The following information addresses the necessary us age of a propylene g...

Page 17: ...heating system from corrosion and rust Antifreeze is able to perform this function by the addition of rust and anti corrosive inhibitors which are designed specifically to activate in a water solution Summary Antifreeze solution has three basic functions freeze protection boil over protection and anti corrosion and rust protection PPG Antifreeze solution is also primarily responsible for heat tran...

Page 18: ...onic Heating System Owner s Manual Figure 1 Eyepiece Calibration Screw Daylight Plate Assembly Main Prism Assembly Calibrate the Refractometer Aqua Hot Part Number MSX 907 162 APPENDIX D MEASURING PROPYLENE GLYCOL USING A REFRACTOMETER ...

Page 19: ...ple to rest on the prism for approxi mately 30 seconds before going to step 2 This allows the sample to adjust to the ambient temperature of the refractometer 2 Hold daylight plate in the direction of a light source and look into the eyepiece You will see a circular field with gradua tions down the center you may have to focus the eyepiece to clearly see the graduations The upper portion of the fi...

Page 20: ... Page 20 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual Date Service Performed Service Center OWNER S SERVICE LOG ...

Page 21: ... Page 21 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual Date Service Performed Service Center OWNER S SERVICE LOG Continued ...

Page 22: ... Page 22 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual This area provided for notes ...

Page 23: ...age 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...

Page 24: ...15549 East Highway 52 Fort Lupton CO 80621 800 685 4298 Fax 303 857 9000 www aquahot com LTE 907 601 ...

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