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© 2011 Aqua-Hot
®
450-D Hydronic Heating System Owner’s Manual
Overload Fault Indicator Light
This indicator light will illuminate RED whenever one of
the following conditions have occurred:
1. The Aqua-Hot is off due to an electrical overload
(i.e., short) in the main 12 Volt-DC power supply
circuitry.
2. The Aqua-Hot is off due to a combination of high
electrical 12 Volt-DC power loads and a high surface
temperature of the electronic controller.
The Aqua-Hot will automatically restart once the electri-
cal overload (i.e., short) and/or high-heat condition is
corrected.
Heating Zones Status Indicator Lights
These five indicator lights (separately) will illuminate
GREEN whenever a zone thermostat, for each particular
zone, is calling for heat. The GREEN indicator lights
also indicate that 12 Volt-DC power is being supplied to
the particular interior heating zone’s heat exchangers
(i.e., fan motors). If any of the five indicator lights illumi-
nate RED, it indicates that an electrical overload condi-
tion (i.e., short) has occurred in a particular heating
zone’s circuitry.
Pumps #1, #2, and #3 Indicator Lights
These indicator lights (separately) will illuminate GREEN
whenever a circulation pump is operating. If any of the
three indicator lights illuminate RED, it indicates that an
electrical overload condition (i.e., short) has occurred in
the particular component’s circuitry.
Engine Preheat Pump Indicator Light
This indicator light will illuminate GREEN whenever the
engine preheat circulation pump is operating. Please
note that this light will only be active if the engine pre-
heat switch is ON in conjunction with either the diesel-
burner and/or the electric element switch. If this indicator
light illuminates RED, it indicates an electrical overload
condition (i.e., short) has occurred in this particular com-
ponent’s circuitry.
NOTE:
The low temp cutoff light must be illuminated and
heater must be up to operating temperature for the
heating zone status indicator lights to illuminate red
or
green.
NOTE:
Zone circulation pumps #1 and #2 are activated
whenever a zone thermostat calls for heat. The
#3 boiler tank stir pump is activated whenever
the domestic water is being used on a continu-
ous basis or the heater is not up to operating
temperature.
T
ROUBLESHOOTING
Electric Heating Element Status Indicator Light
This indicator light will illuminate GREEN whenever the
Aqua-Hot’s electric heating element is operating and pro-
viding heat to the Aqua-Hot’s boiler tank. Please note that
this light will only be active if the electric element switch is
in the
ON
position. If this indicator light illuminates RED, it
indicates an electrical overload condition (i.e., short) has
occurred in the electric heating element’s
12 Volt-DC
powered circuitry.
NOTE:
The Aqua-Hot’s VDC/VAC Control Thermostat
will automatically activate the diesel-burner and/
or the electric heating element
only
if the diesel-
burner and/or electric element switch is in the
ON
position.
Содержание 450 D
Страница 1: ...OWNERS MANUAL 2011 Aqua Hot Heating Systems Inc 450 D ...
Страница 2: ... Page 2 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual ...
Страница 22: ... Page 22 2011 Aqua Hot 450 D Hydronic Heating System Owner s Manual This area provided for notes ...
Страница 24: ...15549 East Highway 52 Fort Lupton CO 80621 800 685 4298 Fax 303 857 9000 www aquahot com LTE 907 601 ...
