Aqua-Hot AHE-100-02S, Руководство по обслуживанию

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© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
S
ECTION
1: I
NTRODUCTION TO THE
AHE-100-02S
Engine Preheat System:
The engine preheat system is responsible for heating the mo-
tor home’s engine block in order to make it easier to start-up
when cool weather conditions exist.
When the engine preheat system is activated via the interior
switch, the motor home’s engine coolant is circulated
through a dedicated copper coil in the Aqua-Hot’s boiler
tank, where heat from the antifreeze and water heating solu-
tion is transferred to the motor home’s engine coolant. The
heated engine coolant is then transported back to the engine
where it transfers the heat to the engine to gradually warm it.
Additionally, the Aqua-Hot includes a motor-aide feature,
which uses the circulation of the motor home’s engine to
transport the engine’s coolant from the Aqua-Hot’s boiler
tank to the motor home’s warm engine and back to the boiler
tank. Through this process, the boiler tank is kept heated,
which reduces the time required to bring the tank to operat-
ing temperature for interior heat and continuous domestic hot
water. This motor-aide feature is part of the engine preheat-
ing feature and plumbing system, and requires no action on
the user’s behalf to function.
Interior Heating System:
The interior heating system is responsible for providing heat
to the motor home’s interior in order to maintain the temper-
ature at a comfortable level.
For interior heating, it is the room thermostats that trigger the
Aqua-Hot’s interior heating system. When a thermostat rec-
ognizes that heat is required in a particular area, it sends a
signal to the Aqua-Hot’s corresponding zone relay. The
Zone Relay responds by activating the circulation pump for
that zone, which sends the heated antifreeze and water heat-
ing solution through the Heating Loop corresponding to the
zone requesting heat. The fans on the heat exchangers in the
zone calling for heat are also activated; therefore, as the heat-
ed solution flows over the heat exchanger’s fins, the heat is
transferred to those fins and dispersed into the interior of the
motor home by the fans. Until the thermostat signals that
heat is no longer required, the Aqua-Hot will continue to
send the heated antifreeze and water solution through the
loop, which returns the cooled solution to the Aqua-Hot’s
boiler tank to be re-heated before being sent back through
the loop again. This process continues until the pre-set tem-
perature of the interior is reached, and the interior room ther-
mostat signals the electronic controller that heat is no longer
required.
AC Circuit:
Although the diesel-burner is the primary heating source for
the Aqua-Hot and is necessary for providing continuous do-
mestic hot water, an alternate heat source exists for moderate
temperatures, which functions with an AC circuit. Whenever
the motor home is connected to an AC power source -
plugged into shore power or using a generator, the Aqua-
Hot’s electric heating element has the ability to function in
order to provide heat for the boiler tank.
When the antifreeze and water heating solution falls below
operating temperature (as determined by the control thermo-
stat), the control thermostat closes, and allow AC power to
flow to the electric heating element. When the electric heat-
ing element receives power, it becomes active and supplies
heat to the boiler tank until operating temperature is reached.