Xtreme Heaters Heater User manual

www.xtremeheaters.com
877-360-HEAT (4328)

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Introduction & Registration
Thank you for purchasing an Xtreme Heater!
It is our privilege to have you as a customer and want you to have the best experience
possible with your new Xtreme Engine Compartment Heater. Your Xtreme Heater
is the best engineered, highest quality and best supported product of its kind.
Designed to last the life of your boat, careful attention to these installation and
care instructions will assure many years of trouble-free operation and maximum
performance from your Xtreme Heater.
Before getting started with the installation, take time to register your heater purchase
with us. Register by recording your model and serial number (labeled on the under-
side of your heater) below, and filling out the registration form on the Xtreme website:
www.xtremeheaters.com/warrantyform
Serial Number: ______________________________________
Purchase/Install Date: _________________________________
Your Xtreme Engine Compartment Heater is designed to provide a reliable heating
source when installed properly and connected to a reliable electrical supply.
Installation instructions and tips are provided in this manual, with additional detail
found on our website:
Your heater is factory-calibrated to operate automatically when the engine
compartment temperature falls below 40 °F (approximately), and to continue
operating until an ambient temperature of 50 °F (approximately) has been attained.
By operating within this temperature range, extreme cold conditions are avoided.
All heaters are sealed as there are no user serviceable components. Please do not
attempt to open or alter your heater as this will void your warranty. If your heater
ever requires service, do not return it to your retailer, rather contact us directly
via our website (www.xtremeheaters.com) or call toll free: 877-360-HEAT(4328)
for an RMA number. Package your heater carefully, preferably in its original
packaging, and send it to:
Xtreme Heaters,
Att. WARRANTY
5322 Palmero Court, Suite 300
Buford, GA 30518
www.xtremeheaters.com.

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How your Heater Works
Xtreme Engine Compartment Heaters are designed specifically to keep your engine space
safely above freezing temperature, without wasting energy heating the space to unnecessary
levels. Our fixed thermostat is factory-set to turn on the Xtreme Heater at 40° Fahrenheit
(+/-3°) and off at 50 °F, keeping your bilge space safely above freezing temperatures.
The graph below represents a 74-hour log recorded on a boat equipped with an Xtreme
Heater. The boat is stored in a wet slip over the winter. The top line of the graph, labeled
Sensor 1, represents a sensor that was placed near the Xtreme Heater, and the 2nd (lighter)
line, labeled Sensor 2 is a sensor that was placed further away from the heater. The lowest
line, labeled outside air, recorded the air temperature outside of the boat.
As you can see from this illustration, outside air temperatures and engine compartment
temperatures fell on a similar curve, until they approach the Xtreme Zone of Protection.
When the engine compartment reaches 40 °F (+/-3), the Xtreme Heater takes action, running
until the engine compartment reaches 50 °F (+/-3). The small peaks and valleys illustrate
the heater cycling to maintain our target temperature range. The engine compartment was
never allowed to reach freezing levels, nor was energy wasted to heat the space to unnecessary,
“human” levels of comfort.
Toward the end of the series, as the outside air temperature rises back above freezing, the
engine compartment temperature curve begins to flatten. The Xtreme Heater, sensing less
need for heat, cycles less frequently, and finally returns to stand-by mode.
How often the heater cycles, and how long it runs is dependent on how well your boat is
prepared to maintain the heat generated. For example, on a boat with open vents to the
engine compartment, the heater will cycle more frequently, working harder to overcome heat
loss through the uncovered vents. Review the tips section of this manual for suggestions
regarding how to preserve the heat generated by your Xtreme Heater, maximizing the
efficiency and level of protection provided by your heater.

3
Installing your Heater
Follow these installation instructions carefully to ensure maximum
effectiveness, safety and efficiency from your Xtreme Heater. Additional
installation tips, including tips for specific types of boats can be found on
our website: www.xtremeheaters.com.
Installing your Xtreme heater is as easy as selecting a mounting location and plugging in
the heater. Your Xtreme Heater can be installed permanently, or easily installed for winter
and removed for boating season, without tools, using our optional quick release bracket (see
inside back cover).
The design of the Xtreme Heater takes advantage of true forced air, opening up a wider
range of location options in your engine compartment Your heater can be mounted in any
orientation, including upside down, to maximize air flow and circulation throughout your
engine compartment.
Choosing a Location
First, examine your engine compartment to determine what your heater will be protecting.
In addition to preventing freeze damage to the engine(s), is there a generator, sea strainers,
pumps or any other equipment that require protection? Select a location that offers
maximum airflow and circulation, directing airflow toward the most critical components
in the engine compartment. Since heat naturally rises, try to locate your heater as low in
the engine compartment as possible, directing airflow toward the bottom of the engine(s).
Select a location that minimizes the chances of immersion in bilge water, as your heater,
while resistant to moisture, is not designed for immersion.
Single Engine Runabout
For a runabout with an inboard/outboard power plants, direct the flow toward the
outdrive connection to the engine. The exposed outdrive can conduct cold into the engine
compartment. This is particularly true if the boat is stored out of the water on a trailer or
lift. In the right conditions, wind can direct cold air through the propeller exhaust port, up
through the risers and into the engine.