Aqua-Hot™ Hydronic Heating System Owner’s Manual 07/04
3.2 Using the Domestic Hot Water System
When the Aqua-Hot is at operating temperature, the domestic water is
automatically heated as it is being used. Because the Aqua-Hot does not
store any hot water
,
simply open any hot water faucet and a continuous
supply of domestic hot water will be present within a few seconds. This
hot water feature is
continuous
and is accomplished by the Aqua-Hot’s
Domestic Hot Water Heating System. Please note that the
Diesel
switch must be
ON
to get an unlimited supply of hot water (i.e. during
showers).
3.3 Using the Engine Preheat System
When the Aqua-Hot is at operating temperature and the
Diesel-Burner
and/or the
Electric Heating Element(s)
switch(s) is
ON
, follow these
simple instructions:
A.
Turn the Aqua-Hot's
Engine Preheat
switch
ON
; reference
Figure 3
.
This procedure will activate the Engine Preheat Circulation Pump and
circulate the engine's coolant through the Engine Preheat System.
This feature will adequately warm the engine for easy start-ups on
cool mornings.
NOTE:
Allow approximately 1 to 2 hours of engine preheating run
time. Preheat duration will be shortest when the
Diesel
switch is
ON
.
SECTION 3: OPERATING INSTRUCTIONS
Hot Water
Engine
Preheat
SECTION 3: OPERATING INSTRUCTIONS
B.
Turn
OFF
the Aqua-Hot's
Engine Preheat
switch whenever engine
preheating is not desired.
NOTE:
The Aqua-Hot's Engine Preheating System acts as a
supple-
mental heating source
in addition to the Diesel-Burner and the Electric
Heating Element(s). While traveling, the engine's heated coolant will
automatically pass through the Engine Preheat / Motoraide System,
transferring heat into the Aqua-Hot's Boiler Tank. This design feature
reduces the total operating hours of the Diesel-Burner and the Electric
Heating Element(s).
Engine
Preheat
,
continued
Diesel
Electric
Engine
Preheat
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Low
High
Indicator
Light
Figure 3
Page 4
