Domestic Water System
Plumbing the Heating Loop
©Aqua-Hot®
125DN Installation Manual
REV 220419
©Aqua-Hot®
125DN Installation Manual
REV 220419
p. 35
p. 34
NOTE:
This is just a sample for the layout of the diesel burner with
the Aqua-Hot and heat exchangers. Actual placement may vary
on the individual design of the RV. For questions or assistance,
contact Aqua-Hot at 574-AIR-XCEL (574-247-9235).
Layout Example
Figure 80
Cozy #1
Living Space
Aqua-Hot
Heating System
Figure 79
Diesel Burner
Cozy #2
Kitchen
Cozy #3
Bedroom
Diesel Burner
Cozy #1
Living Space
Aqua-Hot
Heating System
Cozy #2
Kitchen
Cozy #3
Bedroom
Domestic Water System Requirements
•
Reference A119.2/NFPA 501C Standard on Recreational
Vehicles 1993 Edition for relevant regulatory information
regarding the design of Domestic Water Systems.
• The Aqua-Hot is equipped with a pressure relief valve and a
tempering valve in order to provide safe hot water without
chance of scalding or an over-pressurized system.
• Plumb the domestic water system according to Figure 82.
Plumbing the Domestic Water System
The Aqua-Hot is also able to provide domestic hot water
while the boiler tank is up at operating temperature. Activate
the external diesel burner to provide adequate heat for hot
water needs. The electric element will only provide light duty
hot water.
The tempering valve is integrated into the cabinet of the
Aqua-Hot, and is set upon departure from the Aqua-Hot factory.
So long as the tempering valve is not modified, it will provide
hot, non-scalding water.
Instructions
1. Locate the domestic cold water inlet (blue PEX tube) and
connect it to the vehicle’s domestic cold water system.
2. Locate the domestic hot water outlet (red PEX tube) and
connect it to the vehicle’s domestic hot water system.
Domestic Cold
Water Inlet
Domestic Hot
Water Outlet
Figure 81
To Hot Water
Faucets
Tempered
Domestic Hot Water
Fresh Water
Storage Tank
Cold Water Faucets
Demand Pump
Figure 82
NOTE:
Extended exposure to household bleach will corrode the
components of the Aqua-Hot that will potentially dramatically
shorten the operational lifetime of the Aqua-Hot. Under no
circumstances is the Aqua-Hot to be exposed to household bleach
for extended periods of time. This type of damage is not covered by
the Aqua-Hot warranty.
NOTE:
The Aqua-Hot Domestic Water System is rated for a
water flow of 0.8 GPM. It is not recommended to modify the
water flow. This can cause an over-pressurized system or
lack of consistent hot water.
