Airxcel Aqua-Hot 600 Series, Installation Manual

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Introduction
©Aqua-Hot® 600D Installation Manual p. 3
System Overview
The Aqua-Hot 600D is a Hydronic (water-based) Heating
System, a tank-less hot water system, and a diesel engine
preheating system.
The heating system provides moist, quiet, comfortable,
interior heat with up to 5 separate, thermostatically-controlled
temperature zones, and prevents tank and line freezing in the
bays.
The tank-less hot water system produces 90 gallons per
hour of continuous, on-demand hot water.
The diesel engine preheating system circulates the engine’s
antifreeze solution through an internal heating loop in the Aqua-
Hot and pumps it back through the engine, raising the engine’s
temperature from 30°F to 90°F in about 1 hour.
The same heating loop that preheats the diesel engine
allows the Aqua-Hot system to take surplus heat generated by
the motor home’s diesel engine while running, and use it to
heat the Aqua-Hot system.
This TribridHot™ designated system uses one or a
combination of heat sources to heat FDA-Approved Generally
Recognized As Safe (“GRAS”) Propylene Glycol-based antifreeze
solution in the Aqua-Hot’s boiler tank.
The 600D has multiple heating sources: the motor home’s
engine’s surplus heat (while driving), two 120V AC - 2000W
Electric Elements (when plugged into shore power), and a 12V
DC powered diesel burner (when dry camping). These heat
sources can be used separately or simultaneously.
New Low Emissions Technology virtually
eliminates smoke and odor from the exhaust
by reducing total hydrocarbon emission by
82%, making Aqua-Hot the cleanest burning diesel-powered
hydronic heating system available.
Should additional assistance be needed, please contact the
Technical Support at 574-AIR-XCEL (574-247-9235), Monday
through Friday, between 7:00am and 4:00pm MST.
If the information in this manual is not followed
exactly, a fi re or explosion may result, causing
property damage, personal injury or death.
Important Notes:
• A qualifi ed installer or service technician must perform
equipment installation or service. Contact Aqua-Hot for
Factory Authorized Service Centers or Certifi ed Technicians
located near you at www.aquahot.com/service-help, or call
us at 574-AIR-XCEL (574-247-9235).
• Warranty work must be performed by an Aqua-Hot
Authorized Service Center.
• Your on-product identity label contains the specifi cations of
your unit. Factory settings may be adjusted by the vehicle
manufacturer, confi rm fi nal setting with your dealer.
• This heating system has been certifi ed for installation only
in recreational vehicles, not certifi ed for use in boats.
• The Aqua-Hot heating system operates independently of
the vehicle engine and is connected directly to the electrical
system and fuel system of the vehicle.
• Please read this manual and follow instructions to avoid
injuries during installation and/or operation.
Hot Water System
When hot water is requested, domestic water from the
coach’s fresh water tank is transported through a copper coil
in the Aqua-Hot’s boiler tank where heat is transferred from
the heated antifreeze and distilled water solution. The heated
domestic water then fl ows through the tempering valve to be
mixed with cool water from the fresh water tank to achieve an
appropriate temperature before it fl ows to the faucet.
Figure 1