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B
C
D
A
ENGLISH
The DC/DC Converter 24V/90W allows you to operate the
Stellar device from a 12V or 24V DC power source in a car,
boat, or other vehicle equipped with a suitable battery.
Consult your equipment supplier for more information
about this accessory.
The H4i in heating mode can only be used when the device
is connected to mains supply. The Stellar internal battery
will not charge when powered from a DC power source.
WARNINGS
• Read instructions before use.
• Only use the converter when connecting to a 12V or
24V DC supply.
• Do not connect the Stellar device to a 12V or 24V
DC power source while the power source is being
charged from AC mains.
• Do not attempt to modify the converter. There are no
user-serviceable parts inside the converter.
CAUTIONS
• The converter must only be used with Stellar devices
to ensure proper performance of the device.
• The converter is intended for use on 12V or 24V
negative ground systems (where the negative
terminal of the battery is grounded). Using it on a
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E
12V or 24V positive ground system may damage the
Stellar device and the vehicle's electrical system.
If you are unsure whether you have a negative
ground system, consult the car, boat or other vehicle
manual.
• Make sure the converter is not covered during use to
avoid overheating the device.
• The converter is not intended for use on an aircraft.
Using the converter via a cigarette lighter
Refer to the illustration 1.
1. Before connecting the converter, ensure the switch (A)
is off.
2. Position the converter on a level surface, with the
ResMed logo facing up.
3. Plug the connector end (B) of the converter into the DC
input socket (C) of the Stellar device.
4. Remove the cigarette lighter from the vehicle socket.
5. Plug the cigarette lighter adaptor plug (D) on the
converter into the vehicle cigarette lighter socket.
6. The light (E) on the converter will glow green when the
connection is made and the switch is on. The Stellar
device should then power on.
The light will flash continuously if the connection is
not made, or if the device is in standby mode or power
DC/DC Converter 24V/90W
User Guide
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