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Installation
en
There has to be minimum 100 cm
2
(16 square inches) ventilation hole
in the space where the heater is installed.
Warm air ducting of the heater
It is important to plan the proper routing of the duct and the locations of the air reg-
isters. It is good to locate the heater as near as possible to the area being heated.
Avoid the use of sharp bends in the ducting and keep overall bends to a minimum.
Heated air is distributed through the boat with
2410
ø 60 mm duct. Multiple outlets
can be installed by adding
2413
ø 60 mm “Y” fi ttings leading to various locations.
All duct to “Y” and duct to register connections should be clamped.
The
2411
air registers are adjustable for direction and fl ow and located at each
duct termination point. It is important that suffi cient fl ow is allowed by the installed
registers to maintain (limit) the heater temperature. To ensure this for some ap-
plications, the adjustment flap of the register in the bigger heated space, will be
removed. Too much resistance in the ductwork (too many fl aps closed) and the
heater may overheat and shut down.
If the heater will be used mainly with thermostat control, the control panel should
be located in the largest heated area. To minimize the loss of heat energy, any long
runs and/or runs in areas that do not require heating can be insulated using
2412
insulation. Insulation nearer the heater will be more effective than insulation at the
far ends of duct runs.
Ducting runs
To enable low power consumption, the blower power is limited. It is important that
diameters in ducting and air supply holes are as large as possible.
Long air ducting will weaken the total effect, as the flow will be reduced due to
friction losses and loss of temperature through the walls of the ducts. The recom-
mended maximum length of one duct is
1800 t
5 meters (16,5’) and
2400 t
8 me-
ters (26’). Temperature loss can be reduced with the insulation sock
2412
.
Cabin ventilation
To optimize performance, some ventilation of the cabin is needed, so that fresh air
being heated and driven into the cabin is not reduced by overpressure.
1800 t / 2400 t
490535
en
