Controller
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 10
NOTE:
For networked control of the Aqua-Hot Controller,
Aqua-Hot requires system integrators ensure that individual
commands are received and processed. Aqua-Hot requires
that commands be repeated or confirmed so that if a
single message were dropped, or if there is a brief network
disturbance, the Controller would get into the correct state
as soon as the disruption was removed.
The Aqua-Hot Controller monitors the heating system and
handles all logic relating to safeties and heating control.
As such, the system integrator is required to display all
pertinent status information but not use that information to
lock out operation or add additional safety layers that could
impact the end of operation if a message from the Controller
was missed.
Operating the Aqua-Hot
System Status (4):
This item will indicate the current operational status of the
Aqua-Hot. If any faults have triggered, those will be displayed
here.
During normal operation, this should display either INTERIOR
HEAT or HOT WATER relating to the priority and position of the
3-way valve.
While in INTERIOR HEAT mode, the 3-way valve is oriented
so as to circulate heated antifreeze and water solution
through the heating zones of the coach.
While in HOT WATER mode, the 3-way valve is oriented so
that the heated antifreeze and water solution is circulated
immediately back into the boiler tank. This is known as
“stirring” the tank, and it is done to provide as much heat
as possible to the domestic water line while water is flowing.
Module Options (5):
Tapping on the module options screen (the 3 lines on the
bottom right of the home screen) will display the screen shown
above. This is known as the Module Options screen. From here,
it is possible to access unit diagnostics, activate Quiet Mode,
change the temperature units, adjust screen brightness, and
unit timeout.
Screen Timeout (A):
The screen timeout item sets the amount of
time required to allow the screen to shut-off
when idle.
Screen Brightness (B):
This setting changes the screen brightness.
Unit of Measurement (C):
This setting will change the display units of the
Aqua-Hot. Either Fahrenheit or Celsius can be
selected.
Aqua-Hot Diagnostics (D):
Tapping on this element will direct you to the
Aqua-Hot’s built-in diagnostic, testing, and
troubleshooting tools.
Quiet Mode
(E):
This option toggles the Aqua-Hot’s quiet mode.
Quiet mode is a setting where the speed and
output of the heat exchanger fans is reduced
to 80%. This is done to reduce noise of the
heat exchangers.
Please note that this feature must be activated
and deactivated as needed.
A
B
C
E
D
NOTE:
The Aqua-Hot LCD is an
OPTIONAL
add-on. It is
encouraged that RVs already equipped with an RV-C enabled
touchscreen have all Aqua-Hot screens and features
mirrored on the coach display.
