Table of Contents
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Contents
Caution Notes ...............................................................................1
Installation Checklist ...................................................................2
Introduction ..................................................................................4
System Features ..........................................................................7
Component Cut-Aways .................................................................9
Installing the Aqua-Hot ..............................................................11
Installation of the Expansion Bottle ......................................... 12
Mounting the Burner to the Vehicle ......................................... 13
Combustion Air & Exhaust System ............................................14
Burner Harness ..........................................................................16
Connecting the Burner to the Aqua-Hot ....................................19
Burner Connections .................................................................. 20
Burner Plumbing Requirements ................................................21
Wiring the Aqua-Hot to the RV .................................................. 22
House Power Sense ...................................................................24
Connecting the 125GN to 12V DC Power ................................ 25
Connecting the Aqua-Hot to AC Power ..................................... 26
Installing Heat Exchangers ........................................................27
Heat Exchanger Locations & Clearances ................................ 28
Mounting the Heat Exchangers ................................................ 29
Wiring the Heat Exchangers ..................................................... 30
Plumbing the Heating Loop .......................................................31
Layout Example ......................................................................... 32
Domestic Water System............................................................ 33
Mounting the Aqua-Hot LCD ..................................................... 34
Operating the LCD & Aqua-Hot ................................................. 35
Configuring the Zones ................................................................37
RV-C Network Connectivity ....................................................... 38
Filling the Aqua-Hot ................................................................... 39
Purging the Interior Heating Loop ............................................ 40
Fuel Supply .................................................................................41
Fuel System ............................................................................... 42
Fuel Purge Procedure ............................................................... 45
Gas Burner Troubleshooting ..................................................... 46
System Checks .......................................................................... 49
First Operation ........................................................................... 50
Winterizing ..................................................................................51
Flow Diagram ............................................................................. 52
Appendix A: System Schematics .............................................. 53
Appendix B: Measuring Antifreeze ............................................57
Appendix C: Parts & Accessories ............................................. 58
Warranty .................................................................................... 64
©Aqua-Hot®
125-GN1 Installation Manual REV 220427
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 efficient 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.
Caution Notes
Introduction
p. 1
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Table of Contents
