Heating and Cooling
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© 2016 by Erwin Hymer Group North America, Inc.
For more information, please consult the Owner's Manual for the Webasto Dual Top Evo unit.
The Webasto unit is connected directly to the battery bank, and is not controlled by the battery disconnect switch. For this
reason, please ensure the unit is turned off to avoid draining the batteries when the E-Trek is not in use, or any time hot
water and cabin heating is not needed.
Although there is no direct flame, the Webasto unit does burn diesel fuel, and you may notice an odor if you leave the rear
doors or windows open.
Unlike direct flame water heaters, which heat water quickly, the Webasto unit takes approximately an hour to warm the water
to the desired temperature, sometimes longer when the water going into the unit is very cold. Anticipate times when you will
need hot water for the sink and shower, and turn the unit on in time to heat the water for your use.
Thermostat
Cooling
The roof-mounted air conditioner in your E-Trek will provide cool
air while camping, and will also operate while driving, since the
engine generator will provide more than enough electricity to
operate it and still charge the batteries. See the FAQ:Electrical
System section for a discussion about how long you can operate
the air conditioner and other high-load electrical devices on
battery power.
Refer to the air conditioner manual for details of use.
Thermostat
The E-Trek thermostat controls the air conditioning unit. Set the
thermostat on "cool" and set the desired temperature.Some
models also have a small heat strip in the air conditioning which
will blow warm air, but this produces heat directly from
electricity and is not recommended for heating the E-Trek cabin for extended periods of time unless you are attached to
shore power or running the engine. For all other circumstances, use the diesel-fueled hot water system to heat the cabin. If
your unit has the heat strip option, you can operate it by turning the thermostat to "furnace" and setting the desired