Aqua-Hot AHE-100-02S-12 VDC Service Manual Page 6
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© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
SECTION 1: INTRODUCTION TO THE AQUA-HOT AHE-100-02S
This service and parts manual is designed to aid
trained and qualified service technicians with
the process of troubleshooting and servicing the
Aqua-Hot AHE-100-02S Hydronic heating sys-
tem.
The Aqua-Hot AHE-100-02S heating system features a 12
Volt-DC powered diesel-burner and a 120 Volt-AC, 1650
Watt electric heating element. These two heating sources are
used in conjunction with an antifreeze/water heating solution
in order to provide a continuous supply of domestic hot wa-
ter, interior/fresh water tank heating, independent interior
zone heating, and engine preheating. Be sure to reference
Figures 3 for a complete component overview.
Please note that all Danger, Warning, Caution, and Note box-
es, appearing as needed throughout this manual, must be
reviewed and adhered to during any service procedure in
order to avoid potential hazards, which could result in injury,
product damage, or property damage.
Should additional assistance be needed, please contact the
technical support department at 1-800-685-4298, Monday
through Friday, between the hours of 7:00 AM and 4:00 PM
Mountain Standard Time.
Danger, Warning, Caution, and Note Boxes:
Danger, Warning, Caution, and Note boxes appear through-
out this manual as a means of alerting the service technician
to important information.
INDICATES THAT PERSONAL INJURY IS LIKELY OR
IMMINENT.
Indicates that serious damage to the heater will occur
and personal injury is possible as well.
Indicates that damage to the heater is possible.
NOTE: Indicates information that requires special atten-
tion by the service technician
Understanding the Aqua-Hot AHE-100-02S Major
Systems:
The basis for the Aqua-Hot heating system’s functionality is
the antifreeze and water heating solution, which is comprised
of water that is distilled, de-ionized, or soft, as well as anti-
freeze. Through this solution’s ability to maintain and trans-
fer heat, the Aqua-Hot’s three major systems: the domestic
water system, engine preheat system, and interior heating
system, are able to function effectively. This antifreeze and
water heating solution is contained within the Aqua-Hot’s
boiler tank and is heated by the diesel-burner when its oper-
ating criteria are met and/or the electric heating element
when its operating criteria are met. In order for the diesel-
burner to be considered as a heating source by the Aqua-Hot,
it must have an adequate fuel supply, receive power from the
fuse block, and be selected as a heating source from the inte-
rior switch panel. In order for the electric heating element to
be considered as a heating source by the Aqua-Hot, it must
receive power from either a generator or from shore power
and be selected as a heating source. Once the antifreeze and
water heating solution achieves operating temperature (as
determined by the Aqua-Hot’s control thermostat), the do-
mestic water system, the engine preheat system, and the inte-
rior heating system are permitted to operate as needed.
Domestic Hot Water System:
When hot water is requested, domestic water from the motor
home’s fresh water tank is transported through a copper coil
around the Aqua-Hot’s boiler tank where heat is transferred
from the heated antifreeze and water heating solution to the
domestic water flowing through the copper coil. The heated
domestic water then flows through the tempering valve to be
mixed with cool water from the fresh water tank to achieve
an appropriate temperature before it flows to the faucet re-
questing hot water.
- SERVICE MANUAL 1
- AHE-100-02S 1
- — Page 2 — 2
- Table of Contents 3
- This Page Left 5
- Intentionally 5
- IMMINENT 6
- Figure 1 8
- Figure 2 9
- Figure 3 10
- Figure 4 12
- Figure 5 13
- Figure 6 14
- Figure 7 15
- Figure 8 16
- Figure 9 17
- Figure 10 18
- Figure 11 19
- Figure 12 20
- Figure 13 21
- Tempering Valve: 22
- Figure 14 23
- Figure 15 25
- Figure 16 26
- Engine Preheat Pump: 27
- Figure 17 28
- Zone Pumps 29
- Interior heat exchanger Fans 29
- Figure 18 29
- Figure 19 30
- Electrical - AC 31
- Figure 20 32
- Figure 21 33
- Figure 22 33
- Figure 23 34
- Operational Flow-Chart 35
- Figure 24 36
- Figure 25 37
- Figure 26 38
- Figure 27 39
- Figure 28 39
- Figure 29 40
- Figure 30a 41
- Figure 30b 41
- Figure 30c 41
- Figure 31a 42
- Figure 31b 42
- Figure 32 42
- Figure 33 43
- Figure 34a Figure 34b 43
- Figure 35 44
- Figure 36 44
- Figure 37 50
- Figure 38 51
- Figure 39 53
- Figure 40 54
- Figure 41 55
- Figure 42 56
- Figure 43 57
- Figure 44 58
- Figure 45 59
- Figure 51 60
- Figure 47 62
- Figure 48 63
- Figure 49 64
- Figure 50 65
- Figure 52 67
- Diesel-Burner Controller: 68
- Figure 53a 69
- Figure 53b 69
- a. Fuel solenoid 71
- 1: General information 73
- Or pressurized to 17 PSI 74
- — Page 75 — 75
- APPENDIX A: WIRING DIAGRAM 76
- 13 lb Radiator 79
- Figure B1 79
- Figure B2 80
- Figure B3 81
- Figure B4 82
- Figure C1 83
- Figure C2 83
- Figure C3 84
- Figure C4 84
- Figure C5 85
- Figure C6 85
- Figure C7 86
- Figure D1 87
- Figure D2 88
- Figure D3 88
- Figure E1 89
- Figure E2 90
- Figure E3 90
- Figure E4a 91
- Figure E4b 91
- Figure E4c 91
- Figure E5 92
- Figure E6a Figure E6b 93
- Figure E6c 94
- Figure E7 95
- Figure E8 96
- Figure E9 97
- Figure E10 98
- Figure E11 99
- Figure E12 100
- Figure E13a 100
- Figure E13b 100
- Figure E14a 101
- © 2011 Aqua-Hot 102
- Figure F1 103
- — Page 104 — 104
- — Page 105 — 105
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