Owner`s manual

Hydro-Hot Hydronic Heating System Shop Manual 07/03
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4.8 Circulation Pump #2 Indicator Light
This indicator light will illuminate GREEN whenever Circulation Pump #2 is
operating, reference Figures 1 and 5. Please note that this light will only be
active if the Hydro-Hot is at normal operating temperature (i.e. between
160
F and 190
F) and if either Heating Zones #2, #3, or #4 are calling for
heat, reference Figure 3. If this light illuminates RED, it indicates an
electrical overload condition (i.e. short) has occurred in this particular
component's circuitry.
4.9 Stir Pump Indicator Light
This
indicator light will illuminate GREEN whenever there is a continuous
demand
for domestic hot water (i.e. during a shower), reference Figures 1
and 5. Please note that this light will be active only when the Diesel switch
is turned ON, reference Figure 4.
4.10 Low Battery Voltage Fault Indicator Light
This indicator light will illuminate RED whenever the VDC voltage level is
too low for the Hydro-Hot to operate properly, reference Figure 5. This fault
must be manually reset after the voltage level has been restored to the VDC
battery system, reference Section 4.3 for reset instructions.
4.11 Low Temp Cutoff Status Indicator Light
This
indicator light will illuminate GREEN whenever the Hydro-Hot is able to
provide heat for both the Interior and Fresh Water Tank Heating Zones,
reference Figure 5. Whenever this indicator light is OFF, it indicates that
domestic hot water is being used on a continuous basis (i.e. during a
shower).
NOTE:
The Hydro-Hot will not provide both interior zone heating and a
continuous supply of domestic hot water simultaneously; Domestic Hot
Water will take priority over Interior Heating. This is referred to as the
"Domestic Water Priority System".
4.12 Diesel-Burner Status Indicator Light
This
indicator light will illuminate GREEN whenever the Hydro-Hot's Diesel-
Burner is operating and supplying heat to the Hydro-Hot's Boiler Tank,
reference Figures 1 and 5. Please note that this light will only be active if
the Diesel switch is turned ON, reference Figure 4.
4.13 Overload Fault Indicator Light
This
indicator light will illuminate RED (reference Figure 5) whenever one of
the following conditions have occurred:
1. The Hydro-Hot is off due to an electrical overload (i.e. short) in the
main VDC power supply circuitry.
2. The Hydro-Hot is off due to a combination of high electrical VDC
power loads and a high surface temperature of the Electronic
Controller.
The Hydro-Hot will automatically restart once the electrical overload (i.e.
short) and/or high heat condition is corrected.
Page 7
Section 4: General Heater Information
Electronic
Controlle
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