48
Refrigerant pipe installation
2. Connecting refrigerant pipe for outdoor unit
Classification
Front side connection
Right/left (and bottom) side connection
Working process
• First, remove the piping cover from the outdoor
unit.
• Separate the knock-out hole that you are going
to use. If you separate the knock-out hole that is
going to be unused, small animals such as squirrels
and rats may get into the unit through the hole.
• Fix the bottom side of the piping cover first and
then fix the top part of it.
• Separate the knock-out hole at the bottom
side of the unit and install the pipe.
• After installing and insulating the pipe, close
up the remaining holes. If not, small animals
such as rats and squirrels may get inside the
unit.
H/P
Liquid side
pipe
Gas side
pipe
Gas side
pipe
Liquid side
pipe
H/R
High pressure
gas pipe
Liquid side
pipe
Low pressure
gas pipe
Liquid side
pipe
Low pressure
gas pipe
High pressure
gas pipe
Caution for welding the pipe to an outdoor unit
• When welding the pipe, the unit may get damaged by the heat and flame from welding. Use a flame proofing
cloth to protect the unit from a welding fire or flame. Sensor for detecting outside temperature is located on the
left side of the welding part so be extra careful not to damage the sensor when welding.
• The O-ring and Teflon packing inside service valve may get damaged by the heat from welding. Wrap the
bottom side of the service valve with a wet cloth and weld it as shown in the illustration. Also, water dripping
from the wet cloth may interrupt the welding. Make sure the water does not drip from the wet cloth.
• Make sure that connected pipes does not interrupt each other or make contact with the product. (Vibration may
cause damage to the pipes.)
• When removing the sealed pipe on the bottom side of the service valve, cut it with a pipe cutter first and then
start the welding. When the sealed pipe is welded without cutting, you may get injured by the refrigerant within
the pipe.
Temperature
sensor
Wet towel
Service port
Service valve
< H/R >
< H/P >
Temperature
sensor
Wet towel
Service port
Service valve
CAUTION
Summary of Contents for DVM S AM080FXVAGH
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