DC Inverter U-match Series Cassette Type Unit
29
refrigerant and corrode the copper pipe-work.
If a leak is suspected, all naked flames shall be removed/extinguished. If a
leakage of refrigerant is found which requires brazing, all of the refrigerant shall be
recovered from the system, or isolated (by means of shut off valves) in a part of the
system remote from the leak. Oxygen free nitrogen (OFN) shall then be purged
through the system both before and during the brazing process.
3.2.5 Refrigerant Adding
Before and during operation, use an appropriate refrigerant leak detector to monitor
the operation area and make sure the technicians can be well aware of any
potential or actual leakage of inflammable gas. Make sure the leak detecting device
is applicable to inflammable refrigerant. For example, it should be free of sparks,
completely sealed and safe in nature.
See the following table for the amount of additional refrigerant.
Unnecessary
Charge Pipe Length
Additional Refrigerant
Amount for Extra Pipe
3.2.6 Installation of Drain Pipe
(1) It is not allowed to connect the condensate drain pipe into waste pipe or other
pipelines which are likely to produce corrosive or peculiar smell to prevent the
smell from entering indoors or corrupt the unit.
(2) It is not allowed to connect the condensate drain pipe into rain pipe to prevent
rain water from pouring in and cause property loss or personal injury.
(3) Condensate drain pipe should be connected into special drain system for air
conditioner.
To Next Page
Loading...
