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Can BREE
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Operating and Maintenance Cooling Unit Instructions 8-14 kW
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35
to that of a poorly prepared system. Take particular
care to ensure all copper piping is clean and dry
internally.
There is no refrigerant in the cycle of the indoor unit.
C A U T I O N
Cap the end of the pipe when pipe is to be inserted
through a hole
Do not put pipes on the ground directly without a cap
or vinyl tape at the end of the pipe
If piping installation is not completed until next day
or over a long- er period of time, braze off the ends
of the piping and charge with oxygen free nitrogen
through a Schrader valve type access
fi
tting to
prevent moisture and particle contamination.
Do not use insulation material that contains NH3
because it can damage cooper pipe material and can
be a source of future leak- age.
Completely insulate both refrigerant gas piping and
liquid piping between the indoor unit(s) and the
outdoor unit.
If not insulated, dew will ocur on the piping surface
18.2 SUSPENSION OF REFRIGERANT
PIPING
Suspend the refrigerant piping at certain points and
prevent the refrigerant piping from touching the weak
part of the building such as wall, ceiling, etc…
(If touched, abnormal sound may occur due to the
vibration of the piping. Pay special attention in case
of short piping length).
1~15m
Indoor unit
Fire-Proof
Section Treatment
Do not
fi
x the refrigerant piping directly with the
metal
fi
ttings (The refrigerant piping may expand and
contract).
Some examples for suspension method are shown
below.
