Model 3300, 3350; Model 4201, 4251, 4301, 4351 - Dometic FAN-TASTIC VENT Installation And Operation Manual

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5.10 Model 3300, 3350

➤ Turn the three-speed knob to the desired speed (0-OFF, 1-LOW, 2-MEDIUM, or 3-HIGH).
➤ Select UP to raise the dome lid or DOWN to close the lid from the mini-rocker switch located near the lift
motor.
➤ When equipped with a fan blade ON/OFF switch (Model 3300), select ON or OFF. When a fan is equipped
with a fan blade motor-reversing switch (Model 3350), preselect either OUT, IN, or the center OFF position
on the switch. As the dome opens and reaches approximately 4", the fan blade turns on to its preselected
speed and direction. When the lid closes, the fan motor automatically turns OFF. Any time you wish to reverse
the fan blade motor while the system is in operation, select the center OFF (neutral) position and allow the fan
blade to stop completely. Once stopped, you may safely select the opposite direction to restart the motor.
I
OUT (Exhaust mode) pulls clean fresh air in through a slightly open window or door while expelling
hot, stale, stuffy air out to the roof area. IN (Intake mode) draws air into the coach from the roof area and
effectively pressurizes the coach if all windows, doors and other vents are closed.
➤ These two models are equipped with a built-in thermostat. Preselect a comfort setting from deep blue to
deep red on the thermostat dial (22 °F– 123 °F; –6 °C– 51 °C). The fan motor will turn ON or OFF, based on
the interior ambient temperature compared to the thermostat setting. When the thermostat temperature is
"satisfied," the fan motor will turn OFF and the lid will stay open. When the thermostat calls for cooling, the
fan blade motor automatically activates. The lid must be open at least 4" and OUT or IN must be selected
and not the center OFF position (Model 3350). The ON/OFF switch on the fan must be in the ON position
(Model 3300) before the thermostat can activate the fan blade.
➤ Both models are equipped with a rain sensor. When the lid is open and moisture contacts the sensor, the
lid closes and disengages the fan blade motor. When the rain sensor dries, it will not automatically re-open
the lid. Manually opening the lid by using the lift-motor knob will bypass the rain sensor with fan operation,
reverting to the setting prior to the sensor's activation. When the rain sensor has been overridden by manually
opening the lid, the rain sensor will become active again once it has dried.

5.11 Model 4201, 4251, 4301, 4351

➤ Turn the three-speed knob to the desired performance level (0-OFF, 1-LOW, 2-MEDIUM or 3-HIGH). This will
activate the fan.
➤ Select UP to raise the dome lid or DOWN to lower the lid from the remote wall-mounted switch.
➤ When equipped with a fan blade ON/OFF Switch (Model 4201/4301), select ON or OFF. When a fan is
equipped with a fan blade motor-reversing switch (Model 4251/4351), preselect either OUT, IN, or the
center OFF (neutral) position on the switch. As the dome opens and reaches approximately 4", the fan blade
turns on to a preselected speed and direction. When the lid closes, the fan blade motor automatically turns
OFF. Anytime you reverse the fan blades while the system is in operation, select the center OFF (neutral)
position and allow the fan blades to stop completely. Once stopped, you may safely select the opposite
direction to restart the motor.
I
OUT )Exhaust mode) pulls fresh air in through a slightly open window or door while expelling hot, stale,
stuffy air out to the roof area. IN (Intake mode) draws air into the coach from the roof area and effectively
pressurizes the coach if all windows, doors and other vents are closed.
I
➤ Both models 4301 & 4351 equipped with a rain sensor. When the lid is open and moisture contacts the
sensor, the lid closes and disengages the fan blade motor. When the rain sensor dries, it will not automatically
re-open the lid. Manually opening the lid by using the lift-motor knob will bypass the rain sensor with fan
operation, reverting to the setting prior to the sensor's activation. When the rain sensor has been overridden
by manually opening the lid, the rain sensor will become active again once it has dried.
13
Fan
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