Thor Motor Coach 2009 Mandalay, Owner'S Manual

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MANDALAY
The optional solar panel is mounted to the front A/C unit and is
connected to the house batteries. The solar panel is designed
to eliminate parasitic loads, such as monitor panel
memory, on the batteries. It is not intended to fully charge the
batteries. The best way to sustain a full charge is to monitor the
batteries and use the generator or shore power source to
recharge the batteries.
The Energy Management System (EMS) consists of two parts: the display panel and the
distribution panel. The display panel is mounted above the entry door for visibility and use.
The distribution panel is located at the foot of the bed in the bedroom and is a 120/240 Volt
power distribution and energy management system.
The system will automatically sense the available power to the vehicle and will determine
whether it is connected to a 120 Volt AC/30 Amp shore power source, 240 Volt AC/50 Amp
shore power source, or Generator source. Depending on the available power, it controls four
loads: 1 - Water Heater, 2- Rear A/C, 3 - Washer/Dryer, and 4 - Front A/C. The system will shed
or turn off these appliances in the same order if the system senses that the load is
larger than the supply. Shedding simply means that power to that appliance had been turned
off to lower the Amp draw. These appliance are loads whose use can be postponed until a time
when current is available for their use. For example: if the power source is 120 Volt AC/30 Amp
shore power, the system will attempt to keep the total 120 Volt current draw to less than
30 Amps. The 20 Amp service mode is not automatically detected and the operator must
manually select the 20 Amp mode when 20 Amp service is available.
The display panel above the entry door will show what type of service is providing power on the
left side of the panel under "Service Type". The center of the panel indicates how many amps
are being drawn at any given moment. If you are connected to 30 Amp shore power and the
panel shows 28 amps, and you decide to turn on or plug in an additional item, the system may
or may not begin the shedding process. If the amp draw would rise above the supplied 30 Amps
the shedding process would begin by shedding the water heater first to lower the Amp draw to
the supplied 30 Amps. If the draw does not lower enough, then the system would shed the next
item to lower the Amp draw and so forth.
9-13
ELECTRICAL SYSTEMS
SOLAR PANEL (OPTIONAL)
ENERGY MANAGEMENT SYSTEM