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Providing AC Power
Connecting the Aqua-Hot to AC Power
The following section will detail how to connect the Aqua-
Hot to the vehicle's AC electric system. Connect the 3-pin Molex
connector to the coach-side AC electric system in order to utilize
the Aqua-Hot's AC heating element.
The Aqua-Hot utilizes Molex 19403 and 19045 series con-
nectors for the AC electrical circuit. These are self-contained
connectors which can be readily purchased from your choice
of electronics supplier. Listed below are three different mating
connections.
Self-Contained Power Connector - 2 Circuit for Solid Wire
Size
Part Number
Housing Color
12-14AWG
19045-1000
White
(2.00mm
)
2
Self-Contained Power Connector - 2 Circuit for Stranded Wire
14-16AWG
19403-1011
Blue
(2.00mm
)
2
12AWG
19403-1010
Yellow
(2.00mm
2
)
•
Installation must be performed by a qualified profession-
al according to current national regulations. Reference
A119.2/NFPA 501C Standard on Recreational Vehicles
1993 Edition.
•
The boiler must be connected to a 120V AC supply perma-
nently and be protected with a 20A breaker (minimum). The
120V AC must be separate from 12V DC.
•
It must be possible to disconnect the power to the boiler,
either an easily accessible plug or a circuit breaker.
•
Please refer to the schematic on page 56.
Molex 19045-1000
Figure 55
p. 26
©Aqua-Hot®
125-GN1 Installation Manual REV 220427
AC Electric Connection
Molex 19403-1010
Molex 19403-1011
Figure 56
Cozy heat exchangers can be mounted in one of two
configurations: either flat on the ground, or vertically. Reference
Figure 58.
•
Supply ventilation cross-sectional area of at least 29in
2
(74cm
) must be supplied to each heat exchanger.
•
Do not supply heat exchangers air which is drawn from the
bay areas.
•
Return air should be drawn from the same room the heat
exchanger is heating.
•
The anti-freeze and water heating solution must flow in
through the bottom of the heat exchanger, and out the top
(reference Figure 69).
•
The Aqua-Hot 125GN is designed to work with up to 3
thermostatic heating zones.
Figure 54
Figure 57
Heat Exchanger Installation Requirements
Vertical Orientation
2
©Aqua-Hot®
125-GN1 Installation Manual REV 220427
Installing Heat Exchangers
Horizontal Orientation
Figure 58
Figure 59
p. 27
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