Airxcel Aqua-Hot AHE-600-D04 User manual

Use and Care Guide
600Series
AHE-600-D04

Journey in Comfort
©Aqua-Hot® 600D Use and Care Guide REV 220815 p. 2
Thank you for equipping your RV, coach, or caravan with an Aqua-Hot hydronic heating
system! We deeply value your business and we are grateful for the trust you have placed with
Aqua-Hot Heating Systems, LLC. Our customers are our 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 recreational vehicle or manufactured
home owner; therefore, we have designed a heating system to signicantly improve all of your
comfort levels. Additionally, the Aqua-Hot hydronic heating system is a low-emissions, fuel
efcient system that adds thousands of dollars in value to your RV or home.
We know that you must be eager to get underway, but take time to read and understand this
Use and Care Guide to understand the basic functionality of the Aqua-Hot. This guide should
be maintained in legible condition and kept in a safe, accessible location for future reference.
Should you have any suggestions on how we can better serve you, please do not hesitate
to contact us.
Technical Support can be contacted at [phone]. Hours of operation are 7:00am
to 4:00pm (MST) Monday through Friday.
The Aqua-Hot heating system is protected by the nest warranty in the industry (read about
it at the back of this manual).
Important Notes:
• A qualied installer or service technician must perform equipment installation or service.
Contact Aqua-Hot for Factory Authorized Service Centers or Certied technicians located
near you at www.aquahot.com/service-help, or call us at [phone] or +1 (303)
651-5500.
• Warranty work must be performed by an Aqua-Hot Factory Authorized Service Center.
• Your on-product identity label contains the specications of your unit. Factory settings may
be adjusted by the vehicle manufacturer, conrm nal setting with your dealer.
• Follow this guide exactly. Failure to do so may result in a re or explosion resulting in
property damage and/or personal injury.

Journey in Comfort
©Aqua-Hot® 600D Use and Care Guide REV 220815 p. 3
Comfort Zone #1: Comfortable Cabin Heat.
Get heat where you want it, when you want it. This Aqua-Hot system puts heat where you need it. Therefore, your interior
temperatures will be just right. 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 operating,
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: Comfortable Hot Water
Take showers knowing that your tank-less Aqua-Hot is ready and waiting to deliver hot water. The freedom to take a hot shower
when you want makes your experience much more like home.
Comfort Zone #4: Low Emissions
Aqua-Hot’s new low emission systems are fume-less and odorless. It’s good for you, good for your neighbor, and good for the
environment.
Comfort Zone #5: Large Service Networks
You won’t need to service your Aqua-Hot often, but when you do, you can be condent in our Certied Service Centers that are
close by and trained to assist you with all of your Aqua-Hot specic needs.
Comfort Zone #6: Adds Value
The NADA Recreational Vehicle Guide lists Aqua-Hot as adding thousands of dollars to the value of a coach or caravan. 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 diesel each time heat or hot water is needed. Aqua-Hot’s TribridHot™ technology powers the Aqua-Hot sys-
tem 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.

Introduction
©Aqua-Hot® 600D Use and Care Guide REV 220815 p. 4
Contents
Caution Notes...........................................................4
Safety Features ........................................................5
System Overview ......................................................6
Important Notes: ......................................................6
System Features ......................................................7
Controls Overview ....................................................9
Domestic Hot Water System..................................10
Operational Flow Chart ..........................................11
Maintenance Schedule..........................................12
Winterizing the Aqua-Hot .......................................13
De-Winterization.....................................................13
Disinfecting the Water System ..............................13
Antifreeze Types .....................................................14
Measuring Antifreeze Using a Refractometer ......16
General Troubleshooting........................................17
Testing Functionality ..............................................18
RVC Network Connectivity .....................................19
Manual Mode .........................................................20
Service Log .............................................................21
Warranty .................................................................23
Caution Notes
As you read this information, take particular note of the NOTICE,
CAUTION, WARNING, and DANGER symbols when they appear.
This information is important for safe and efcient use of the
Aqua-Hot system.
NOTICE signals a situation where potential damage to the
Aqua-Hot could occur.
CAUTION signals a situation where potential harm or risk of
minor or moderate injury could occur if you do not follow
instructions.
WARNING signals a hazardous situation where potential harm,
risk of serious injury, or death could result if instructions are not
followed.
DANGER signals a situation where immediate risk of serious
injury or death will result if instructions are not followed.
NOTE: This manual will also use notes sections similar to
this one to draw attention to features and practices which
must be observed.

Safety Instructions
©Aqua-Hot® 600D Use and Care Guide REV 220815 p. 5
Read all instructions before operating the Aqua-Hot unit. Aqua-
Hot Heating Systems is not liable for damage resulting from
failing to follow instructions contained in this, and any other
Aqua-Hot documentation relevant to this unit.
• Read this manual before using the Aqua-Hot System
to reduce the risk of injury to persons or damage to the
equipment.
• The product identity label contains specications of the
unit, to what standards it has been tested, and important
safety notices.
• The Aqua-Hot tank and heating loop operate at 0.0 PSI
(zero pressure system). Air pressure to the tank must not
exceed 20 PSI. Exceeding this rating will cause internal
damage to the Aqua-Hot.
• Have your dealer show you the location and operation of all
switch functions and valve settings.
• Propylene glycol “Generally Recognized As Safe” by the
FDA, must be utilized for the antifreeze and water heating
solution.
• Interior heat can still be used once the water heating
system has been drained and winterized.
• Use propylene glycol “Generally Recognized As Safe” RV &
Marine antifreeze specically for “winterizing” application
only.
• At maximum operating temperature, the coolant will be
very hot and scalding. Hot vapor or coolant may cause in
serious burns or injury. Be aware of hot surfaces.
• The hot water temperature is set at the mixing valve to
120°F at the factory.
• DO winterize the heating system when freezing
temperatures are expected to avoid serious damage to the
hot water system.
• DO NOT operate the burner or electric element without
antifreeze and water heating solution in the boiler tank to
avoid damage to the heater.
• Aqua-Hot’s exhaust is HOT. DO NOT park is dry areas when
operating to avoid re and injury to persons.
• Before cleaning or servicing, disconnect all power supplies.
• The heater must be switched OFF when refueling.
• DO NOT operate the Aqua-Hot’s diesel burner inside an
enclosed building.
As with any appliance, allow the Aqua-Hot to
completely shut down BEFORE disengaging the coach
12V power disconnect.
Safety Features
Low-Voltage Shutdown
The Aqua-Hot Reporter is designed to operate between 11V
DC and 16V DC. If the Reporter detects that it is receiving
voltage below 11.8V DC, it will display a low-voltage fault. If
the Reporter system drops below 11.2V DC for more than
30 seconds, a safety mechanism will activate, shutting
down the Aqua-Hot.
Over-Current
An Over-Current fault condition occurs when too much
current is drawn by a component, usually a fan or pump.
When this fault is triggered, the output channel is shut off
until the system has been reset or power-cycled.
Over-Temperature
An over-temperature fault will occur if your Aqua-Hot heating
system has reached 218°F. The Reporter will deactivate
the heater and display an over-temperature fault on the
display screen.
Low-Level Cutoff
If the system senses low uid levels, the heating system will
shut down all fans, heat sources, and pumps until the unit
is adequately relled.
Reporter “Heartbeat Function”
The Reporter unit with rmware 1v5 and later and all
Reporter 2.0 units are equipped with a “heartbeat”
function that establishes a signal between the RV-C system
and the Reporter. The Reporter constantly awaits for a
signal from the RV-C network indicating to the Reporter that
it is to continue normal operation. Loss of 6 consecutive
signals from the RV-C network will trigger the Reporter to
deactivate the Aqua-Hot. Once power is restored to the
coach and the Reporter, “BATTERY DISCONNECT SWITCH
OFF” will be displayed in the fault log, indicating that the
Reporter lost connectivity with the RV-C network.
Manual Mode
The 2.0 Reporters with CFG 1.9 and greater come with a
manual mode in case the general coach RV-C network fails.
It will allow for limited operation while the larger network/
module problem is addressed.
Interlock Switch
The Aqua-Hot 600D is equipped with an interlock switch
that prevents the heater from operating when the cover is
not installed in the correct position or if it is not properly
secured in place. This is a safety device to ensure the
burner will not ignite if the service panel is not properly
secured.