CAIRE HELiOS Marathon H850 Use Manual page 14

Introduction
2. Tandem Mode—You can connect the portable
Caution
The oxygen supply line should only be used when the
H850 flow control knob is set to a demand mode
setting.
10 HELiOS Marathon
was designed to maximize freedom of
movement. Fill the portable with liquid oxygen
from the reservoir every day to use as far from
the reservoir as desired.
to the reservoir. See Connecting the Portable
Oxygen Unit to the HELiOS Reservoir, page 31.
When at home and not moving about, connect
the portable oxygen unit to your reservoir with
an oxygen supply line. When the HELiOS
Marathon H850 portable oxygen unit is
connected to a HELiOS reservoir in this manner,
the reservoir supplies oxygen, rather than the
portable oxygen unit.
TM
H850 Portable Oxygen Unit Home Use Guide